CN216812090U

CN216812090U - Air suction pipe, compressor and refrigeration equipment

Info

Publication number: CN216812090U
Application number: CN202220342779.5U
Authority: CN
Inventors: 邓敦勇; 蔡顺; 殷田甜; 张洋洋; 黄刚
Original assignee: Anhui Meizhi Compressor Co Ltd
Current assignee: Anhui Meizhi Compressor Co Ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-06-24
Anticipated expiration: 2032-02-18

Abstract

The utility model discloses an air suction pipe, a compressor and refrigeration equipment, wherein one end of the air suction pipe is used for being connected with an external air suction pipe, the other end of the air suction pipe is used for being connected with an air suction hole of the compressor, the air suction pipe comprises a shock absorption pipe section, the shock absorption pipe section extends along a first direction, and the shock absorption pipe section comprises a plurality of pipe sections which are sequentially communicated end to end and are arranged at intervals in the first direction. According to the technical scheme provided by the utility model, when the air suction pipe is subjected to air flow pressure and vibration transmitted in the operation process of the compressor, the plurality of pipe sections can move, and part of air flow pressure and vibration can be decomposed and offset, so that the force acting on the air suction pipe is offset greatly, the vibration is reduced, the noise is reduced, and the air suction pipe capable of reducing vibration noise is provided.

Description

Suction pipe, compressor and refrigeration equipment

Technical Field

The utility model relates to the technical field of compressors, in particular to an air suction pipe, a compressor and refrigeration equipment.

Background

Under the global large background of carbon peak and carbon neutralization, the reciprocating compressor is taken as the largest energy consumption unit of a refrigeration system, and technology upgrading is urgently needed to improve the energy efficiency coefficient COP and reduce the power consumption.

Be different from on traditional single exhaust compression pump body mechanism basis of inhaling, the two independently inspiratory pump body structures of neotype single cylinder have the ability that promotes reciprocating compressor wholeness ability by a wide margin, when setting up air supplement unit to the compressor tonifying qi, the corresponding breathing pipe of addding, be used for carrying highly compressed refrigerant gas because of the breathing pipe, corresponding also can produce violent vibrations when high-pressure gas is through the breathing pipe, in order to guarantee the even running of whole compressor, and to the control of noise influence, also propose 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 an urgent problem to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide an air suction pipe, a compressor and refrigeration equipment, and aims to provide an air suction pipe capable of reducing vibration noise.

In order to achieve the above object, the present invention provides a suction pipe for a compressor, wherein one end of the suction pipe is used for being connected to an external suction pipe, and the other end of the suction pipe is used for being connected to a suction hole of a compressor cylinder, the suction pipe includes shock absorbing pipe sections, the shock absorbing pipe sections extend along a first direction, the shock absorbing pipe sections include a plurality of pipe sections, the pipe sections are sequentially connected end to end and are arranged at intervals in the first direction, and every two adjacent pipe sections can be arranged close to and far away from each other in the first direction.

Optionally, the air intake duct comprises a helical spring tube forming the damper tube section.

Optionally, the number of turns of the spiral spring tube is n, wherein n is more than 1 and less than or equal to 80; and/or the presence of a gas in the gas,

the length of the spiral spring tube is S1, wherein S1 is more than or equal to 4mm and less than or equal to 200 mm; and/or the presence of a gas in the gas,

the outer diameter of the spiral spring tube is D, wherein D is more than or equal to 4mm and less than or equal to 50 mm.

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

Optionally, the air suction pipe further comprises two straight pipe sections respectively connected to two ends of the shock absorbing pipe section, and the shock absorbing pipe section and the two straight pipe sections are integrally arranged.

Optionally, the length of each straight pipe section is S2, wherein S2 is more than or equal to 1mm and less than or equal to 100 mm.

Optionally, the inner diameter of the air suction pipe is D1, the outer diameter of the air suction pipe is D2, wherein D1 is more than or equal to 0.5mm and less than or equal to 6mm, and D2 is more than or equal to 1mm and less than or equal to 12 mm.

The present invention also provides a compressor, comprising:

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

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 an upper dead point close to a cylinder cover of the cylinder body and a lower dead point far away from the cylinder cover of the cylinder body in a movable stroke; and the number of the first and second groups,

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

the air suction pipe comprises a shock absorption pipe section, the shock absorption pipe section extends along a first direction, the shock absorption pipe section comprises a plurality of pipe sections which are sequentially communicated end to end and are arranged at intervals in the first direction, and every two adjacent pipe sections can be close to and far away from each other in the first direction.

Optionally, the distance between the second suction hole 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.

The utility model also provides refrigeration equipment which comprises the compressor, wherein the compressor comprises the air suction pipe, the air suction pipe comprises shock absorption pipe sections, the shock absorption pipe sections extend along the first direction, the shock absorption pipe sections comprise a plurality of pipe sections which are sequentially communicated end to end and are arranged at intervals in the first direction, and every two adjacent pipe sections can be close to and far away from each other in the first direction.

Optionally, the refrigeration device is a refrigerator.

According to the technical scheme provided by the utility model, the air suction pipe comprises shock absorption pipe sections, the shock absorption pipe sections extend along a first direction, the shock absorption pipe sections comprise a plurality of pipe sections which are sequentially communicated end to end and are arranged at intervals in the first direction, and every two adjacent pipe sections can be close to and far away from each other in the first direction. The suction pipe is provided with a plurality of branch pipe sections which can be close to and far away from each other, so that the plurality of branch pipe sections can move when the suction pipe is subjected to the air pressure and the vibration transmitted in the running process of the compressor, the partial air pressure and the vibration can be decomposed and offset, the force finally acting on the suction pipe is offset by a large margin, the vibration is reduced, the noise is reduced, and the suction pipe capable of reducing the vibration noise is provided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

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

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is a schematic diagram of an internal structure of an embodiment of a compressor according to the present invention;

fig. 4 is a schematic cross-sectional view of the compressor of fig. 3.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Air suction pipe	2a	Working chamber
1	Shock-absorbing pipe section	21	First air suction hole
				11	Pipe section	22	Second air suction hole
12	Straight pipe section	3	Piston assembly
				200	Compressor	31	Piston
2	Cylinder body

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used for explaining the relative position relationship between the components, the motion situation, and the like under a certain posture (as shown in the drawing), and if the certain posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment 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 relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Be different from on traditional single exhaust compression pump body mechanism basis of inhaling, the two independently inspiratory pump body structures of neotype single cylinder have the ability that promotes reciprocating compressor wholeness ability by a wide margin, when setting up air supplement unit to the compressor tonifying qi, the corresponding breathing pipe of addding, be used for carrying highly compressed refrigerant gas because of the breathing pipe, corresponding also can produce violent vibrations when high-pressure gas is through the breathing pipe, in order to guarantee the even running of whole compressor, and to the control of noise influence, also propose higher requirement to the breathing pipe. The double-suction compressor comprises a first suction channel with lower airflow pressure and a second suction channel with higher airflow pressure, the energy efficiency of the refrigeration system can be effectively improved, the power consumption is reduced, but the basic structure of the double-suction compressor causes that the airflow pulsation of the second suction channel is larger, and the overall energy efficiency of the compressor is influenced.

It should be noted that the gas flow pulsation, i.e. the gas flow pressure pulsation, causes the vibration problem of the compressor pipeline, and the reason is that the intermittent suction and discharge of the reciprocating compressor cylinder causes the periodic variation of the gas flow rate and pressure in the pipeline. The large air flow pressure pulsation can cause adverse effects on the operation of the compressor, destroy the tightness of the safety valve and cause large vibration of the pipeline and equipment, especially when the air flow passes through a pipeline elbow, a valve and the like, the large pressure unevenness becomes the main vibration force of the pipeline vibration, and the vibration stress generated at each joint of the pipeline can become the main cause of fatigue damage of the whole structure.

In order to solve the above problems, the present invention provides a suction pipe 100, the suction pipe 100 is used in a compressor 200, one end of the suction pipe 100 is used to connect with an external suction pipe, and the other end is used to connect with a suction hole of a cylinder 2 of the compressor 200, fig. 1 to 2 are specific embodiments of the suction pipe 100 provided in the present invention.

Referring to fig. 1 to 2, the suction pipe 100 includes a shock absorbing pipe section 1, the shock absorbing pipe section 1 extends along a first direction, the shock absorbing pipe section 1 includes a plurality of pipe sections 11 that are sequentially connected end to end and are arranged at intervals in the first direction, and every two adjacent pipe sections 11 can be close to and away from each other in the first direction.

In the technical scheme provided by the utility model, the air suction pipe 100 comprises a shock absorption pipe section 1, the shock absorption pipe section 1 extends along a first direction, the shock absorption pipe section 1 comprises a plurality of pipe sections 11 which are sequentially communicated end to end and are arranged at intervals in the first direction, and every two adjacent pipe sections 11 can be arranged close to and far away from each other in the first direction. The air suction pipe 100 generates violent vibration due to large air pressure pulsation generated when high-pressure air flows pass through the air suction pipe, and the plurality of pipe sections 11 which can be close to and far away from each other are arranged in the first direction, so that when the air suction pipe 100 is subjected to the air pressure, the plurality of pipe sections 11 can move to decompose and offset partial air pressure, and finally the force acting on the air suction pipe 100 is greatly offset, so that the vibration is reduced, the noise is reduced, and the air suction pipe 100 capable of reducing vibration noise is provided.

Specifically, a plurality of pipe sections 11 can be a plurality of pipe sections 11 that are the bending setting, i.e. can be the structure of Z style of calligraphy, in this embodiment, breathing pipe 100 includes the helical spring pipe, the helical spring pipe forms shock attenuation pipe section 1, because of the interval between the helical spring pipe is comparatively even to the spring pipe of every round is all passed through roundly, when the air current process the helical spring pipe in, the air current can not secondary and pipe wall bump, and can both be relative be close to and keep away from between the spring pipe of every round, make the regulating variable of helical spring pipe can increase, and the absorbing effect is better.

Specifically, in this embodiment, the number of turns of the coiled coil spring tube is n, where n is greater than 1 and less than or equal to 80, and since the coil spring tube can swing along the axial direction thereof, when the number of turns is too small, the adjusting effect may not be optimal, and when the number of turns is too large, the volume occupied by the coil spring tube is large, and interference with other parts is easy to occur during the working process, it can be understood that the larger the number of turns of the coil spring tube is, the thicker the tube diameter is, and the longer the length of the coil spring tube is, in order to enable the coil spring tube to achieve a better damping effect and to be adapted to the inner space of the shell of the compressor 200, there is a space enough for the coil spring to move, in this embodiment, the length of the coil spring tube is S1, and S1 is greater than or equal to 200 mm; or the outer diameter of the spiral spring tube is D, D is more than or equal to 4mm and less than or equal to 50mm, the length of the spiral spring tube is S1, and S1 is more than or equal to 4mm and less than or equal to 200mm in the optimal embodiment; and the outer diameter of the spiral spring pipe is D, and D is more than or equal to 4mm and less than or equal to 50mm, so that the spiral spring can achieve the best shock absorption effect.

Specifically, in this embodiment, the material of the air suction pipe 100 is metal or plastic, when the material of the air suction pipe 100 is metal, the stability of the air suction pipe 100 is better, and when the air suction pipe 100 is connected with the periphery of the second air suction hole 22 on the cylinder body 2, the air suction pipe is made of metal, so that the welding connection is more convenient, when the material of the air suction pipe 100 is plastic, the air suction pipe has certain flexibility and elasticity due to the plastic, the damping effect is better, and the spiral spring pipe can be arranged in a telescopic manner along the axial direction, so that the air suction pipe 100 can better neutralize the shaking generated by the air flow pulse, and reduce the noise.

Further, when the air suction pipe 100 is connected to the cylinder body 2 and the external air suction pipe, the larger the area of the abutting surface is, the more stable the abutting surface is, but the wall surface of the spiral spring pipe is undulated and inclined, so that the connection action surface is smaller when the spiral spring pipe is connected to the cylinder body 2 and the external air suction pipe, and the spiral spring pipe is easy to fall off regardless of welding or bonding, referring to fig. 1 and 2, in this embodiment, the air suction pipe 100 further includes two straight pipe sections 12 respectively connected to two ends of the shock absorbing pipe section 1, and the shock absorbing pipe section 1 and the two straight pipe sections 12 are integrally arranged, so that the straight pipe sections 12 are used to ensure the sealing connection with the second air suction hole 22 and the external air suction pipe.

Specifically, since the inner diameter of the straight pipe section 12 is related to the gas compensation amount, the larger the pipe diameter, the larger the gas compensation amount per unit time, the smaller the pipe diameter, the smaller the gas compensation amount per unit time, of course, when the tube diameter is too large, and the gas flow provided by the gas supplementing device is not sufficient, there will be partial pressure loss, and in order to equalize the gas supplementing amount and the gas supplementing pressure, please refer to fig. 4, in the first embodiment, the inner diameter of each of the straight tube sections 12 is d1, the outer diameter of each of the straight tube sections 12 is d2, wherein d1 is more than or equal to 0.3mm and less than or equal to 6mm, d2 is more than or equal to 0.4mm and less than or equal to 12.5mm, thus not only ensuring the air inflow, and the size of the second air suction hole 22 on the cylinder body 2 is matched when the straight pipe sections 12 are connected with the cylinder body 2, the length of each straight pipe section 12 is ensured to be between 1mm and 100mm, and the connection stability can be ensured; the inner diameter of the shock absorbing pipe section 1 is D1, the outer diameter of the shock absorbing pipe section 1 is D2, wherein D1 is more than or equal to 0.5mm and less than or equal to 6mm, D2 is more than or equal to 1mm and less than or equal to 12mm, the inner diameter of the shock absorbing pipe section 1 is also set to be suitable for the size of air inflow, and the outer diameter of the shock absorbing pipe section takes the size of an internal arrangement space into consideration. Preferably, in the third embodiment, the inner diameter of each straight pipe section 12 is d1, the outer diameter of each straight pipe section 12 is d2, and the length of each straight pipe section 12 is S2, wherein d1 is more than or equal to 0.3mm and less than or equal to 6mm, d2 is more than or equal to 0.4mm and less than or equal to 12.5mm, and S2 is more than or equal to 1mm and less than or equal to 100 mm; the inner diameter of the shock absorption pipe section 1 is D1, the outer diameter of the shock absorption pipe section 1 is D2, wherein D1 is more than or equal to 0.5mm and less than or equal to 6mm, and D2 is more than or equal to 1mm and less than or equal to 12 mm.

Fig. 3 to 4 show an embodiment of the compressor 200 according to the present invention.

Taking the compressor 200 as an example to explain a refrigeration system of a refrigerator, in a refrigeration process of the refrigerator, high-temperature and high-pressure refrigerant gas is conveyed from the compressor 200 to evaporators of a corresponding freezing chamber and a corresponding refrigerating chamber to evaporate and absorb heat, so as to realize refrigeration of the freezing chamber and the refrigerating chamber, but the temperatures set for the freezing chamber and the refrigerating chamber are not the same, and the evaporating temperatures of the freezing chamber and the refrigerating chamber are different, so that the temperatures and pressures of the refrigerants after heat exchange in the freezing chamber and the refrigerating chamber are different, and in the prior art, the compressor 200 realizes a refrigeration function of freezing and refrigerating through a flow path, so that the whole heat exchange system needs to participate in work when the freezing chamber or the refrigerating chamber needs to refrigerate, so that energy consumption is high, and energy efficiency is low.

Referring to fig. 4, the compressor 200 includes a cylinder block 2, a piston assembly 3 and an air suction pipe 100, a first air suction hole 21 is formed in a cylinder head of the cylinder block 2, and the first air suction hole 21 is used to communicate with a first condensation flow path; and the side wall is further 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, the 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 close to the 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 pipe 100 is connected with the second condensation flow path, and the other end is connected with the second air suction hole 22.

In the technical scheme provided by the utility model, two parallel flow paths, namely a freezing condensation flow path and a refrigerating condensation flow path, are arranged, 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, because the high-temperature and high-pressure refrigerant formed by compression by the compressor 200 is lower in temperature and lower in pressure when returning to the compressor 200 after passing through the evaporator corresponding to the freezing chamber, and the high-temperature and high-pressure refrigerant formed by compression by the compressor 200 is higher in temperature and higher in pressure when returning to the compressor 200 after passing through the evaporator corresponding to the refrigerating chamber, the working cavity 2a of the cylinder body 2 is simultaneously communicated with the first air suction hole 21 and the second air suction hole 22 so as to be capable of passing through the first air suction flow channel corresponding to the first air suction hole 21 and the second air suction flow channel corresponding to the second air suction hole 22, thus, the refrigerant with relatively lower temperature and lower pressure and returning to the freezing chamber is conveyed to the first air suction hole 21 through the first air suction flow channel 21 In the cylinder body 2 of the compressor 200, the refrigerant with relatively high temperature and high pressure flowing back from the refrigerating chamber is delivered to the compressor 200 through the second air suction hole 22, so that when the cylinder body 2 compresses the refrigerant gas delivered from the first air suction hole 21, the second air suction hole 22 can supplement air into the working cavity 2a, thereby improving the air suction amount of the working cavity 2a of the cylinder body 2, further improving the compression energy efficiency of the compressor 200, realizing respective working conditions through two parallel flow paths, and reducing power consumption. Since the suction pipe 100 is used in the compressor 200 of the present invention, the embodiment of the refrigeration equipment of the present invention includes all technical solutions of all embodiments of the suction pipe 100, and the achieved technical effects are also completely the same, and are not described herein again.

Because the opening and closing of each suction hole are usually controlled by a control valve group in the conventional compressor, when the compressor has only one suction hole, the control valve group is arranged; when the compressor has a plurality of suction holes, generally a plurality of control valve groups are correspondingly arranged, so that the control is complicated. Therefore, in an embodiment of the present invention, referring to fig. 4, a distance between the second suction hole 22 and the top dead center is L, and a 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 first and second

air intake holes

21 and 22 are opened and closed as follows:

an intake stroke of the cylinder, comprising:

a first stroke: 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 opened, 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 port 21, i.e., the refrigerant of the first condensation circuit. It can be understood that, when the piston 31 moves to a position near the bottom dead center, the compression space of the working chamber 2a of the cylinder 2 increases, and is in a negative pressure state, so that the external air flow is facilitated to enter the working chamber 2a of the cylinder 2 from the first air suction hole 21. And the pressure of the air flow passing through the first air suction holes 21 is smaller than that of the air flow passing through the second air suction holes 22. Therefore, in this moving stroke, the second suction hole 22 is blocked by the piston 31 to prevent the air flow of the second suction hole 22 from obstructing the air flow of the first suction hole 21 from entering the working chamber 2a of the cylinder 2.

A second stroke: the piston 31 moves from the first dead center to the second dead center, and the distance from the first dead center is more 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 the moment, the control valve group is switched between an opening state and a closing state according to actual requirements. When the control valve block is in an open state, the first and second suction holes 21 and 22 simultaneously supply air flows to the working chamber 2a of the cylinder block 2. Since a certain amount of air flow is sucked in the space of the working chamber 2a of the cylinder block 2 through the first suction holes 21 in the first stroke, a certain air flow pressure is provided in the compression space. Therefore, when an airflow is input to the working chamber 2a of the cylinder block 2 through the second intake port 22, the influence on the airflow of the first intake port 21 is small. And 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, so that an appropriate buffer distance exists between the second air suction hole 22 and the first air suction hole 21, the blocking influence of the airflow of the second air suction hole 22 on the airflow of the first air suction hole 21 is reduced, and the compression energy efficiency is improved. When the valve group is in the closed state, the second suction hole 22 feeds an air flow into the working chamber 2a of the cylinder 2. At this time, the refrigerant supplemented into the working chamber 2a comes from the second suction hole 22, that is, 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 opening time of the second suction hole 22 is, and the later the closing time is, the longer the high-pressure refrigerant provided by the second condensation loop is, and the greater the air supplement amount is; when the second suction hole 22 is closer to the second dead point, the opening time of the second suction hole 22 is late, the closing time is early, the high-pressure refrigerant provided by the second condensation loop is short, the air supplementing time is short, and the air supplementing amount is small. In reality, the position of the second air suction hole 22 can be set according to the requirement of air supplement amount.

A compression stroke of the cylinder, comprising:

a third stroke: the piston 31 moves from the bottom dead center to a direction close to the top dead center, and is more than 0.5S away from the top dead center. In the third stroke, the control valve group is closed, and the piston 31 moves rapidly towards the direction close to the top dead center. At this time, the second suction hole 22 still inputs the 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 port 22. Therefore, when the air flow in the working chamber 2a of the cylinder 2 is compressed in the third stroke, the air flow input into the working chamber 2a of the cylinder 2 through the second air intake hole 22 is not excessively blocked, so that the air flow can still be sucked in the cylinder 2 in the compression stroke. Further, since the air flows from the first air suction hole 21 and the second air suction hole 22 are mixed in the working chamber 2a of the cylinder 2, the pressure of the air flow in the working chamber 2a of the cylinder 2 is made smaller than the pressure of the air flow passing through the second air suction hole 22.

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

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

the flow paths of the airflow in the first airflow suction channel are 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 channel 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 communicated with the working chamber 2a of the cylinder block 2, the inner discharge pipe is communicated with the outer exhaust pipe, so that the high-pressure airflow compressed in the working chamber 2a of the cylinder block 2 is discharged from the inner discharge pipe to the outer exhaust pipe.

In a concrete reality, the first condensing flow path corresponds to a freezer compartment of a refrigerator, the required refrigerant amount is large due to the large refrigerating amount required by the freezer compartment, the pressure of the consumed refrigerant is large in the work process, the second condensing flow path corresponds to a refrigerating compartment of the refrigerator, the pressure of the consumed refrigerant is small due to the small refrigerating amount required by the refrigerating compartment, the pressure of the refrigerant flowing back to the first air suction hole 21 is far smaller than the pressure of the second air suction hole 22, but the refrigerant amount of the first condensing flow path is large, so that when the compressor 200 works, the first air suction hole 21 is mainly opened to perform main air suction in the air suction stroke of the first half of air suction through the piston 31, the large refrigerant amount on the condensing flow path corresponding to the freezer compartment can be sucked, and the second air suction hole 22 is communicated with the work chamber 2a in the air suction stroke of the second half of air suction stroke, the first air suction hole 21 is closed, the second air suction hole 22 starts to be filled with high-pressure refrigerant gas, air is continuously supplied in the first small half stroke of the compression stage, finally, in the second large half stroke of the compression stage, the second air suction hole 22 is closed, the piston 31 compresses the refrigerant in the working cavity 2a, and the air inflow of the second air suction hole 22 can be controlled by setting the distance between the second air suction hole 22 and the top dead center and the bottom dead center, namely, the opening and closing time of the second air suction hole 22 can be adjusted when the piston 31 reciprocates due to the position setting of the second air suction hole 22, so that the flow ratio of the first air suction hole 21 to the second air suction hole 22 can be adjusted. In addition, the second suction hole 22 is disposed on the side wall of the cylinder 2 and is disposed near the bottom dead center, so that the compressor 200 does not need to specially set a control valve set to control the opening and closing of the second suction hole 22, but can automatically open and close the second suction hole 22 in the moving stroke of the piston 31, and the compressor is ingenious in structural design and saves cost.

Please refer to fig. 4, a distance between the top dead center and the bottom dead center is S, that is, the top dead center is a position where one end of the piston 31 close to the bottom wall of the cylinder block 2 is located when an end surface of one end of the piston 31 close to the cylinder head of the cylinder block 2 moves to a closest distance close to the bottom wall of the cylinder block 2, and the bottom dead center is a position where one end of the piston 31 close to the bottom wall of the cylinder block 2 is located when an end surface of one end of the piston 31 close to the bottom wall of the cylinder block 2 moves to a farthest distance away from the cylinder head of the cylinder block 2. That is, the distance S is a distance between the end surfaces of the piston 31 near the end of the bottom wall of the cylinder 2 in both extreme states. The distance between the second air intake hole 22 and the top dead center is L, that is, the distance between the center line of the second air intake hole 22 and the top dead center is L.

In addition, in order to achieve the above object, the present invention further 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 equipment may refer to the above embodiment of the compressor 200, and is not described herein again; since the compressor 200 is used in the refrigeration apparatus of the present invention, the embodiment of the refrigeration apparatus of the present invention includes all technical solutions of all embodiments of the compressor 200, and the achieved technical effects are also completely the same, and are not described herein again.

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

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The suction pipe is characterized in that one end of the suction pipe is used for being connected with an external suction pipe, the other end of the suction pipe is used for being connected with a suction hole of the compressor, the suction pipe comprises shock absorption pipe sections, the shock absorption pipe sections extend along a first direction, the shock absorption pipe sections comprise a plurality of pipe sections which are sequentially communicated end to end and are arranged at intervals in the first direction, and every two adjacent pipe sections can be close to and far away from each other in the first direction.

2. The suction pipe of claim 1 wherein said suction pipe comprises a helical spring tube, said helical spring tube forming said shock tube section.

3. The suction pipe of claim 2 wherein said helical spring tube is wound for n number of turns, wherein 1 < n ≦ 80; and/or the presence of a gas in the gas,

4. The suction pipe of claim 1 wherein said suction pipe is made of metal or plastic.

5. The intake manifold of claim 1, further comprising two straight pipe sections connected to both ends of the shock absorbing pipe section, respectively, wherein the shock absorbing pipe section is integrally formed with the two straight pipe sections.

6. The suction duct of claim 5, wherein each of said straight duct sections has a length S2, wherein 1mm ≦ S2 ≦ 100 mm.

7. The suction pipe of claim 1, wherein the suction pipe has an inner diameter of D1 and an outer diameter of D2, wherein 0.5mm D1 mm 6mm, 1mm D2 mm 12 mm.

8. A compressor, comprising:

the suction duct according to any one of claims 1 to 7, one end of which is connected to the second condensation flow path and the other end of which is connected to the second suction hole.

9. The compressor of claim 8, wherein the second suction hole is spaced apart from the top dead center by a distance L, and the top dead center is spaced apart from the bottom dead center by a distance S, wherein 0.5S < L.

10. A refrigeration apparatus, characterized by comprising a compressor according to any one of claims 8 to 9.

11. The refrigeration appliance according to claim 10 wherein said refrigeration appliance is a refrigerator.