CN217107371U - Compressor and refrigeration plant - Google Patents

Abstract

The utility model discloses a compressor and refrigeration plant relates to compressor technical field. The compressor comprises a shell, a cylinder and an air suction inner pipe, wherein an installation part is arranged on the shell, a tapered hole penetrates through the installation part, the tapered hole is communicated with the inside and the outside of the shell, and the tapered hole is gradually reduced from the inside of the shell to the outside of the shell; the cylinder is arranged in the shell and comprises a cylinder body and a piston assembly, a first air suction hole is formed in the bottom of the cylinder body, a second air suction hole is formed in the side wall of the cylinder body, and the piston assembly is movably arranged in the cylinder body; one end of the air suction inner pipe is communicated with the second air suction hole, and the other end of the air suction inner pipe is inserted into the conical hole. The utility model discloses the inner space who aims at solving reciprocating compressor is narrow and small, operates difficult problem when the air supplement pipe in the installation.

Description

Compressor and refrigeration plant

Technical Field

The utility model relates to a compressor technical field, concretely relates to compressor and refrigeration plant.

Background

With the progress of social economy and technology level, the living standard of people is improved, the overall environmental protection consciousness of society is enhanced, and the requirements on high performance and low energy consumption of the refrigeration industry are also continuously improved. The compressor is used as the most core part and energy consumption big part of the refrigerating system, and higher requirements are also put forward on the refrigerating performance and the energy efficiency level of the compressor.

The conventional reciprocating compressor is developed for decades, the conventional structure is mature, the improvement of the performance level of the conventional reciprocating compressor tends to a bottleneck, and the double-suction reciprocating compressor has a breakthrough technology and can meet the requirements of compressors with more functions and higher performance. Therefore, the brand new air supplement pipeline connecting structure for the reciprocating double-suction compressor is provided, a sealing connection mode that the air suction inner pipe penetrates through the upper shell is provided for the double-suction compressor, the reciprocating compressor can have an independent double-suction function, and the requirements of more diversified refrigeration systems are met.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a compressor and refrigeration plant, it is narrow and small to aim at solving reciprocating compressor's inner space, operates difficult problem when the air supplement pipe in the installation.

To achieve the above object, the present invention provides a compressor, including:

the mounting part is provided with a tapered hole in a penetrating mode, the tapered hole is communicated with the inside and the outside of the shell, and the tapered hole is gradually reduced from the inside of the shell to the outside of the shell;

the cylinder is arranged in the shell and comprises a cylinder body and a piston assembly, a first air suction hole is formed in the bottom of the cylinder body, a second air suction hole is formed in the side wall of the cylinder body, and the piston assembly is movably arranged in the cylinder body; and the number of the first and second groups,

and one end of the air suction inner pipe is communicated with the second air suction hole, and the other end of the air suction inner pipe is inserted into the conical hole.

Optionally, a sealing ring is arranged between the inner suction pipe and the tapered hole.

Optionally, an annular groove is formed in the periphery of one end, inserted into the conical hole, of the air suction inner pipe, and the sealing ring is correspondingly embedded into the annular groove.

Optionally, the taper of the tapered bore is 5-10 °.

Optionally, the outer diameter of the inner air suction pipe is d1, wherein d1 is more than or equal to 3mm and less than or equal to 8 mm.

Optionally, the diameters of the holes at the two ends of the tapered hole are A and B respectively, wherein A < d1 < B.

Optionally, a stepped hole is formed in the shell in a penetrating manner, and the stepped hole comprises a small hole section and a large hole section which are sequentially connected from inside to outside;

the installation department includes the erection joint, the erection joint is installed the macropore section, the bell mouth is seted up on the erection joint, the one end intercommunication of bell mouth the aperture section.

Optionally, the outer diameter of the inner air supply pipe is D1, the diameter of the small hole section is D1, and D1-D1 are more than or equal to 1mm and less than or equal to 2 mm.

Optionally, the mounting joint is cylindrical in shape, has a height H and a diameter D2, wherein H is larger than or equal to 8mm and smaller than or equal to 20mm, and D2 is larger than or equal to 12mm and smaller than or equal to 20 mm.

Optionally, at least a part of the material of the inner air suction pipe is a non-metal material.

Optionally, the piston assembly includes a piston, the piston has a first dead point located at the bottom of the cylinder and a second dead point far away from the bottom of the cylinder in the moving stroke, the distance between the second suction hole and the first dead point is L, and the distance between the first dead point and the second dead point is S, where 0.5S < L.

Optionally, the compressor still includes the tonifying qi outer tube, the tonifying qi outer tube is located the outside of casing, and with installation department fixed connection to communicate its inner chamber with the bell mouth.

Optionally, the outer diameter of the outer gas supplementing pipe is d2, wherein d2 is larger than or equal to 6mm and smaller than or equal to 10 mm.

The utility model discloses still provide a refrigeration plant, include as above the compressor.

Optionally, the refrigeration device is a refrigerator.

In the technical scheme of the utility model, the installation part is arranged on the shell, and the installation part is provided with the tapered hole, so that the air suction inner pipe can be inserted and installed on the shell along the tapered hole, compared with the direct insertion of the shell on which the tapered hole is arranged for inserting the air suction inner pipe, the length of the tapered hole arranged on the installation part is not limited by the wall thickness of the shell, the depth of the air suction inner pipe inserted into the tapered hole is deeper, thereby ensuring good sealing performance between the shell and the air suction inner pipe, the tapered hole arranged at the same time is arranged in a wide opening way towards one end of the inner side of the shell, so that the air suction inner pipe is inserted into the tapered hole from the wide opening position of the tapered hole, and is convenient to be inserted and fixed into the air suction inner pipe, and is corresponding when the air suction inner pipe is assembled, will the one end of the inner tube of breathing in with on the cylinder the second pore coupling of breathing in, in order to connect the cylinder with the inner tube of breathing in, will again the other end of the inner tube of breathing in is followed the broad mouth department in tapered hole is pegged graft to in the tapered hole, in order to accomplish the cylinder the inner tube of breathing in with fixed connection between the casing, thereby be convenient for in the narrow and small space of casing, accomplish the assembly of the inner tube of breathing in.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 schematic front view of a compressor according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the compressor of FIG. 1;

FIG. 3 is a schematic view in partial cutaway section of the compressor of FIG. 1;

FIG. 4 is a front view of the housing of FIG. 1;

FIG. 5 is a schematic cross-sectional view of the cylinder block of FIG. 2;

FIG. 6 is a front view of the inner suction tube of FIG. 2;

FIG. 7 is a cross-sectional structural view of the installation joint of FIG. 1;

fig. 8 is a schematic cross-sectional view of the compressor of fig. 1 from another perspective.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "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 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, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

With the progress of social economy and technology level, the living standard of people is improved, the overall environmental protection consciousness of society is enhanced, and the requirements on high performance and low energy consumption of the refrigeration industry are also continuously improved. The compressor is used as the most core part and energy consumption big part of the refrigerating system, and higher requirements are also put forward on the refrigerating performance and the energy efficiency level of the compressor.

The conventional reciprocating compressor is developed for decades, the conventional structure is mature, the improvement of the performance level of the conventional reciprocating compressor tends to a bottleneck, and the double-suction reciprocating compressor has a breakthrough technology and can meet the requirements of compressors with more functions and higher performance. Therefore, the brand new air supplement pipeline connecting structure for the reciprocating double-suction compressor is provided, a sealing connection mode that the air suction inner pipe penetrates through the upper shell is provided for the double-suction compressor, the reciprocating compressor can have an independent double-suction function, and the requirements of more diversified refrigeration systems are met.

In view of this, the present invention provides a compressor, and fig. 1 to 8 illustrate an embodiment of the compressor provided by the present invention.

Referring to fig. 1 and 2, the compressor 100 includes a housing 1, a cylinder 4, and an air suction inner tube 7, wherein the housing 1 is provided with an installation portion 2, the installation portion 2 is provided with a tapered hole 3, the tapered hole 3 communicates with the inside and the outside of the housing 1, and the tapered hole 3 is gradually reduced from the inside of the housing 1 to the outside of the housing 1; the cylinder 4 is installed in the housing 1 and comprises a cylinder body 41 and a piston assembly 42, a first air suction hole is formed in the bottom of the cylinder body 41, a second air suction hole 6 is formed in the side wall of the cylinder body 41, and the piston assembly 42 is movably arranged in the cylinder body 41; one end of the air suction inner pipe 7 is communicated with the second air suction hole 6, and the other end of the air suction inner pipe is inserted into the conical hole 3.

In the technical scheme of the utility model, the installation part 2 is arranged on the shell 1, and the installation part 2 is provided with the tapered hole 3, so that the air suction inner tube 7 can be inserted and installed on the shell 1 along the tapered hole 3, compared with the method that the tapered hole 3 is directly arranged on the shell 1 for inserting and connecting the air suction inner tube 7, the length of the tapered hole 3 arranged on the installation part 2 is not limited by the wall thickness of the shell 1, the depth of the air suction inner tube 7 inserted into the tapered hole 3 is deeper, thereby ensuring good sealing performance between the shell 1 and the air suction inner tube 7, and the tapered hole 3 arranged at the same time is arranged in a wide opening towards one end of the inner side of the shell 1, so that the air suction inner tube 7 is inserted into the tapered hole 3 from the wide opening position of the tapered hole 3, thereby facilitating the insertion and fixation of the air suction inner tube 7, it is corresponding, when assembling the inner tube 7 of breathing in, will the one end of the inner tube 7 of breathing in with on the cylinder 4 the second hole 6 of breathing in is connected to connect the cylinder 4 with the inner tube 7 of breathing in, will again the other end of the inner tube 7 of breathing in is followed the broad mouth department of bell mouth 3 is inserted and is connect to in the bell mouth 3, in order to accomplish the cylinder 4 the inner tube 7 of breathing in with fixed connection between the casing 1, thereby be convenient for in the narrow and small space of casing 1, accomplish the assembly of the inner tube 7 of breathing in.

It should be noted that the housing 1 includes an upper housing portion and a lower housing portion, and correspondingly, the mounting portion 2 may be mounted on the upper housing or the lower housing, and may be confirmed and adjusted according to an actual mounting condition; the air suction inner pipe 7 is not limited to be connected with the second air suction hole 6 and the shell 1, the air suction inner pipe 7 can also be used for connecting the first air suction hole with the shell 1, in addition, the installation part 2 and the connection form between the shells 1 are not limited, and can be integrally formed and assembled, in this embodiment, the installation part 2 and the shells 1 are connected in a combined and assembled mode to facilitate processing of the shells 1, and the installation part 2 and the shells 1 are connected in a welded mode to ensure the firmness of fixation between the shells 1 and the installation part 2.

Further, inhale inner tube 7 with be equipped with sealing washer 8 between the bell mouth 3, wherein, sealing washer 8 can be installed in the bell mouth 3, also can install the periphery of inhaling inner tube 7 is through being provided with sealing washer 8 inhale inner tube 7 install extremely when on the bell mouth 3, sealing washer 8 produces elastic deformation to can the butt simultaneously inhale the periphery of inner tube 7 with the inner wall of bell mouth 3 produces interference fit, in order to reach sealing connection's effect.

Specifically, in this embodiment, referring to fig. 6, the sealing ring 8 is installed on the periphery of the inner air suction pipe 7, that is, an annular groove 9 is formed on the periphery of one end of the inner air suction pipe 7 inserted into the tapered hole 3, and the sealing ring 8 is correspondingly embedded into the annular groove 9. Through set up in the periphery of the inner tube 7 of breathing in annular groove 9, when installing the annular groove 9 department of the inner tube 7 of breathing in, sealing washer 8 is because its self elastic deformation to can the joint in the position of annular groove 9, so that sealing washer 8 with the inner tube 7 of breathing in is fixed firm, will sealing washer 8 sets up on the inner tube 7 of breathing in simultaneously, because the inner tube 7 of breathing in self with be the plug-in connection between the casing 1, can be convenient for after sealing washer 8 takes place to age, dismantle down the inner tube 7 of breathing in changes, and will sealing washer 8 sets up in bell mouth 3, because between installation department 2 with the casing 1 is connected through the welded form, and bell mouth 3 from casing 1 is inside to casing 1 outside is the setting of dwindling, then corresponding when needing to change sealing washer 8, the whole case 1 needs to be disassembled, and the operation is inconvenient.

Further, referring to fig. 7, in order to improve the convenience of machining, the taper of the tapered hole 3 is 5 to 10 °. When the taper of the tapered hole 3 is less than 5 degrees, the taper formed by the tapered hole 3 is too small, the tapered hole 3 is similar to a straight hole at the moment, and the effect of forming a wide opening at one end of the tapered hole for facilitating the insertion of the air suction inner tube 7 is not achieved, and when the taper of the tapered hole 3 is more than 10 degrees, the taper of the tapered hole 3 is too large at the moment, and the tapered hole is difficult to form a fixed seal with the air suction inner tube 7 during the assembly of the air suction inner tube 7, so that the taper of the tapered hole 3 is set to be 5-10 degrees, the assembly of the air suction inner tube 7 is facilitated while the tapered hole 3 is processed.

Further, because the pipe diameter of the air suction inner pipe 7 is related to the air intake amount, the larger the pipe diameter is, the larger the air intake amount in unit time is, the smaller the pipe diameter is, the smaller the air intake amount in unit time is, and certainly, when considering the air intake amount of the air suction inner pipe 7, the pressure applied to the pipe wall of the air suction inner pipe 7 needs to be considered, in order to balance the air intake amount of the air suction inner pipe 7 and the pressure applied to the pipe wall of the air suction inner pipe 7, the outer diameter of the air suction inner pipe 7 is d1, wherein, d1 is not less than 3mm and not more than 8 mm. When the outer diameter of the air suction inner tube 7 is smaller than 3mm, the air suction inner tube 7 has large internal air suction resistance, so that the air suction effect of the air cylinder 4 can be reduced; when the external diameter of the inner pipe 7 of breathing in is greater than 8mm, because the inner pipe 7 of breathing in leads to high-pressure refrigerant gas, the pipe diameter is thicker, then in order to improve the structural strength of the inner pipe 7 of breathing in, the wall thickness of the inner pipe 7 of breathing in also can be bigger, and the wall thickness is thicker, when the cylinder 4 is shaking during operation, the influence that the inner pipe 7 of breathing in received will be bigger, can lead to promptly the inner pipe 7 of breathing in shakes, the fragile inner pipe 7 of breathing in, and the pipe diameter is thicker can receive the space restriction inside the casing 1, be not convenient for install the inner pipe 7 of breathing in.

Further, in order to ensure that the inner suction pipe 7 can be inserted into the tapered hole 3 and can be firmly fixed with the housing 1, and cannot penetrate out of the tapered hole 3 to the outside of the housing 1, the diameters of two ends of the tapered hole 3 are a and B, wherein a < d1 < B. The inner suction pipe 7 can be fixed at any position on the aperture of the tapered hole 3, in a preferred embodiment, the outer diameter of the inner suction pipe 7 is set to be equal to the diameter of the middle section of the tapered hole 3, so that the connection between the inner suction pipe 7 and the middle section of the tapered hole 3 is more reliable than the rest position of the tapered hole 3, and a higher dimensional tolerance between the inner suction pipe 7 and the tapered hole 3 can be allowed, if the inner suction pipe 7 is inserted too shallow, the inner suction pipe 7 is easy to be pulled out from the tapered hole 3, and if the inner suction pipe 7 is inserted too deep, the inner suction pipe 7 is easy to be pulled out of the tapered hole 3. The reason why the outer diameter of the inner intake pipe 7 is set to the diameter of the middle section of the tapered hole 3 in design is that there is an error in the process of machining and assembling, which may cause the connection position of the inner intake pipe 7 and the tapered hole 3 to fall to another position of the tapered hole 3, and if the connection position is deviated from the middle section of the tapered hole 3 in design, plus the machining error, the connection position of the inner intake pipe 7 and the tapered hole 3 may be further deviated, thereby affecting the sealing property between the inner intake pipe 7 and the housing 1.

Further, referring to fig. 2 and 3, a stepped hole 10 is formed through the housing 1, and the stepped hole 10 includes a small hole section 10a and a large hole section 10b which are sequentially connected from inside to outside; installation department 2 includes erection joint 2a, erection joint 2a installs macropore section 10b, the bell mouth 3 is seted up on the erection joint 2a, the one end intercommunication of erection joint 2a micropore section 10 a. Set up step hole 10 compare in directly set up the through-hole that runs through on the casing 1, can form a holding surface between the big pore section 10b of step hole 10 and the aperture section 10a, it is right to place the support between attach fitting 2a, can be right attach fitting 2a plays restraint, spacing effect, in order to prevent the transportation during compressor 100, attach fitting 2a receives outside striking and easily leads to attach fitting 2a with the junction between the casing 1 takes place to warp and damages.

Specifically, the air suction inner tube 7 needs to penetrate through the small hole section 10a to be installed in the tapered hole 3, and the sealing ring 8 is sleeved on the periphery of the air suction inner tube 7, so that the outer diameter of the air suction inner tube is D1, the diameter of the small hole section 10a is D1, and D1-D1 is not less than 1mm and not more than 2 mm. The diameter of the small hole section 10a is larger than the outer diameter of the air suction inner tube 7, so that the air suction inner tube 7 can penetrate through the small hole section 10a, when the difference between the outer diameter of the air suction inner tube 7 and the diameter of the small hole section 10a is smaller than 1mm, because the sealing ring 8 is arranged on the periphery of the air suction inner tube 7, when the air suction inner tube 7 passes through the small hole section 10a, the sealing ring 8 can be tightly abutted against the side wall of the small hole section 10a, so that the friction force is increased, the air suction inner tube 7 cannot pass through conveniently, and if the area of the sealing ring 8 protruding out of the periphery of the air suction inner tube 7 is too small, the air suction inner tube 7 can pass through the small hole section 10a, but the sealing performance of the sealing ring 8 is poor; when the difference between the outer diameter of the inner suction pipe 7 and the diameter of the small hole section 10a is greater than 2mm, the area of the annular area of the stepped hole 10 is affected, so that the installation and the limiting fixation of the installation joint 2a are inconvenient. The diameter difference between the outer diameter of the air suction inner pipe 7 and the diameter difference between the outer diameter of the small hole section 10a are arranged between 1mm and 2mm, so that the air suction inner pipe 7 can conveniently penetrate through the small hole section 10a, and meanwhile, the limiting installation of the installation connector 2a can be facilitated.

Further, the mounting joint 2a is cylindrical, has a height H and a diameter D2, wherein H is larger than or equal to 8mm and smaller than or equal to 20mm, and D2 is larger than or equal to 12mm and smaller than or equal to 20 mm. In the present embodiment, the installation joint 2a is configured to be cylindrical, which can facilitate processing of the installation joint 2a, and if the diameter of the installation joint 2a is too small, the diameter of the tapered hole 3 inside the installation joint 2a is too small to insert and fix the suction inner tube 7, and if the diameter of the installation joint 2a is too large, which not only wastes manufacturing materials, but also, because the installation surface on the housing 1 is a curved surface, the hole 10 is not easy to be formed on the surface step of the housing 1, and considering that when the installation joint 2a is formed with the tapered hole 3 therein, the tapered hole 3 needs to have a certain wall thickness to provide a certain protection strength, therefore, the diameter of the installation joint 2a is set between 8mm and 20mm, and in addition, if the height of the installation joint 2a is set too small, the length of the tapered hole 3 arranged therein is also reduced, and it is difficult to achieve a reliable sealing effect, if the height is set too high, not only the manufacturing material is wasted, but also the overall height of the compressor 100 is affected, therefore, the height of the installation joint 2a is set between 12mm and 20mm, so that the overall height of the compressor 100 is prevented from being too high and not easy to assemble while a reliable sealing effect can be achieved.

Further, the at least partial material of the inner tube 7 of breathing in is non-metallic material, because the cylinder 4 can produce vibrations in the course of the work, if set up the material of the inner tube 7 of breathing in is the metal material, then the inner tube 7 of breathing in can be along with the vibrations of cylinder 4 produce resonance, and pass through casing 1 will shake and noise transmission arrive the outside of casing 1, in this embodiment, set up the both ends of the inner tube 7 of breathing in are the metal material, wherein position is non-metallic material, not only can reduce the cylinder 4 to the vibrations and the noise of casing 1 transmission have still ensured the inner tube 7 of breathing in with cylinder 4 with joint strength between the casing 1.

Further, referring to fig. 8, the piston assembly 42 includes a piston 42a, the piston 42a has a first dead point located at the bottom of the cylinder 41 and a second dead point far from the bottom of the cylinder 41 in the moving stroke, the distance between the second suction hole 6 and the first dead point is L, and the distance between the first dead point and the second dead point is S, where 0.5S < L.

It can be understood that, taking the compressor 100 as an example to explain the refrigeration system of the refrigerator, in the refrigeration process of the refrigerator, high-temperature and high-pressure refrigerant gas is conveyed from the compressor 100 to the evaporators of the corresponding freezing chamber and the 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, and the temperatures and pressures of the refrigerant after heat exchange between the freezing chamber and the refrigerating chamber are different.

Specifically, the first air suction hole is used for communicating with a first condensation flow path; the second suction hole is communicated with a second condensation flow path, a working cavity is formed between the piston 42a and the bottom of the cylinder body 41, the piston 42a has a first dead point close to the bottom of the working cavity and a second dead point far away from the bottom of the working cavity in the moving stroke, and two parallel flow paths, namely a freezing condensation flow path and a refrigerating condensation flow path, are arranged, so that a high-temperature and high-pressure refrigerant formed by compression by the compressor 100 can be reasonably distributed to the freezing flow path and the refrigerating flow path, and after passing through an evaporator corresponding to a freezing chamber, the high-temperature and high-pressure refrigerant formed by compression by the compressor 100 returns to the compressor 100 at a lower temperature and a lower pressure, and after passing through the evaporator corresponding to the refrigerating chamber, the high-temperature and high-pressure refrigerant formed by compression by the compressor 100 returns to the compressor 100 at a higher temperature and a higher pressure. The working cavity of the cylinder 41 is simultaneously communicated with the first air suction hole and the second air suction hole 6, so that the refrigerant with relatively low temperature and relatively low pressure and returned from the freezing chamber can be conveyed into the cylinder 41 of the compressor 100 through the first air suction channel corresponding to the first air suction hole and the refrigerant with relatively high temperature and relatively high pressure and returned from the refrigerating chamber can be conveyed into the compressor 100 through the second air suction channel corresponding to the second air suction hole, so that when the cylinder 41 compresses the refrigerant gas conveyed from the first air suction hole, the second air suction hole 6 can supplement air into the working cavity, thereby improving the air suction amount of the working cavity of the cylinder 41, further improving the compression energy efficiency of the compressor 100, and realizing respective working conditions through two parallel flow paths, power consumption is reduced.

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, the distance between the second suction hole 6 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 < L. During the movement of the piston 42a, the first and second intake holes are opened and closed as follows:

the intake stroke of the cylinder 4 includes:

a first stroke: the piston 42a moves from the first dead center to the second dead center, and the distance from the first dead center is less than 0.5S. In the first stroke, the valve group is opened, so that the first suction hole is communicated, and the second suction hole is blocked by the piston 42 a. At this time, the working chamber of the cylinder 41 performs suction only through the first suction hole. At this time, the total amount of the refrigerant in the working cavity comes from the first air suction hole, namely the refrigerant of the first condensation loop. It can be understood that, when the piston 42a moves to a position close to the second dead center, the compression space of the working chamber of the cylinder 41 increases, and is in a negative pressure state, so that the external air flow is facilitated to enter the working chamber of the cylinder 41 from the first air suction hole. And the pressure of the air flow through the first air suction holes is smaller than that of the air flow through the second air suction holes 6. Therefore, in this moving stroke, the second suction hole 6 is blocked by the piston 42a to prevent the air flow of the second suction hole 6 from obstructing the air flow of the first suction hole from entering the working chamber of the cylinder 41.

A second stroke: the piston 42a moves from the first dead center to the second dead center, and the distance from the first dead center is greater than 0.5S. In the second stroke, the piston 42a does not block the second suction hole 6, so that the second suction hole 6 communicates with the working chamber of the cylinder 41. 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 6 simultaneously supply air flows to the working chamber of the cylinder 41. Since a certain amount of airflow is sucked into the space of the working chamber of the cylinder 41 through the first suction hole in the first stroke, a certain airflow pressure is provided in the compression space. Therefore, when an airflow is input to the working chamber of the cylinder 41 through the second intake port 6, the airflow has a small influence on the first intake port. And the distance from the second air suction hole 6 to the first dead point is greater than 0.5S, namely the distance from the second air suction hole 6 to the first air suction hole is greater than 0.5S, so that a proper buffer distance exists between the second air suction hole and the first air suction hole, the blocking influence of the airflow of the second air suction hole 6 on the airflow of the first air suction hole is reduced, and the compression energy efficiency is improved. When the control valve block is in a closed state, the second suction hole 6 inputs airflow to the working chamber of the cylinder 41. At this time, the refrigerant supplemented into the working chamber comes from the second suction hole 6, that is, the refrigerant of the second condensation circuit flows back into the working chamber of the cylinder 41. It can be understood that the closer the second suction hole 6 is to the midpoint between the first dead point and the second dead point, the earlier the second suction hole is opened, and the later the second suction hole is closed, the longer the high-pressure refrigerant provided by the second condensation loop is, and the larger the air supplement amount is; when the second air suction hole 6 is closer to the second dead point, the opening time of the second air suction hole is late, the closing time of the second air suction hole is early, the time of the high-pressure refrigerant provided by the second condensation loop is short, the air supplementing time is short, and therefore the air supplementing amount is less. In reality, the position of the second air suction hole 6 can be set according to the requirement of air supplement amount.

The compression stroke of the cylinder 4 includes:

a third stroke: the piston 42a moves from the second dead center to a direction close to the first dead center, and is more than 0.5S away from the first dead center. In the third stroke, the valve group is closed, and the piston 42a moves rapidly toward the first dead center. At this time, the second suction hole 6 still supplies the air flow to the working chamber of the cylinder 41. At this time, the refrigerant supplied into the working chamber comes from the second suction hole 6. Therefore, in the third stroke, when the air flow in the working chamber of the cylinder 41 is compressed, the air flow input into the working chamber of the cylinder 41 through the second air suction hole 6 is not excessively blocked, so that the air flow can still be sucked by the cylinder 41 in the compression stroke. Since the air flows from the first air suction hole and the second air suction hole 6 are mixed in the working chamber of the cylinder 41, the pressure of the air flow in the working chamber of the cylinder 41 is lower than the pressure of the air flow passing through the second air suction hole 6.

And a fourth stroke: the piston 42a moves from the second dead center to a direction close to the first dead center, and the distance from the second dead center to the first dead center is less than 0.5S. In the fourth stroke, the valve group is still closed and the piston 42a blocks the second suction hole 6. In this process, the piston 42a compresses the gas flow in the working chamber of the cylinder 41 into a high-pressure gas flow. And when the piston 42a moves to the second dead center, the air flow pressure in the working chamber of the cylinder 41 is compressed to a certain position. At this time, a control valve group of an output pipe communicating with the working chamber of the cylinder 41 is switched from a closed state to an open state to output a compressed high-pressure air flow.

The working circuits 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 → the working chamber of the cylinder 41.

The airflow flow path in the second air suction flow channel is as follows: the second condensation flow path → the second suction hole 6 → the working chamber of the cylinder 41.

And the compressor 100 further includes an inner exhaust pipe communicated with the working cavity of the cylinder body 41, the inner exhaust pipe is used for being communicated with the outer exhaust pipe, so as to discharge the high-pressure airflow compressed in the working cavity of the cylinder body to the outer exhaust pipe from the inner 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 a working 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, so that the pressure of the refrigerant flowing back to the first suction hole is far smaller than the pressure of the second suction hole 6, but the refrigerant amount of the first condensing flow path is large, so that when the compressor 100 works, the piston 42a mainly opens the first suction hole to perform main suction in the suction stroke of the first half section of suction, the large refrigerant amount on the condensing flow path corresponding to the freezer compartment can be sucked, and in the suction stroke of the second half section of suction, the second suction hole 6 is communicated with the working chamber, the first air suction hole is closed, the second air suction hole 6 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 6 is closed, the piston 42a compresses the refrigerant in the working cavity, and the air inflow of the second air suction hole 6 can be controlled by setting the distance between the second air suction hole 6 and the first dead point and the second dead point, namely, the opening and closing time of the second air suction hole 6 can be adjusted when the piston 42a reciprocates due to the position setting of the second air suction hole 6, so that the flow ratio of the first air suction hole to the second air suction hole 6 can be adjusted. In addition, the second suction hole 6 is disposed on the side wall of the cylinder 41 and is disposed close to the second dead point, so that the compressor 100 does not need to specially set a control valve set to control the opening and closing of the second suction hole 6, but can automatically open and close the second suction hole 6 in the moving stroke of the piston 42a, the structural design is ingenious, and the cost is also saved.

The distance between the first dead center and the second dead center is S. That is, the first dead point is a position where the end surface of the piston 42a near the end of the bottom wall of the working chamber moves to the nearest distance from the end surface of the bottom wall of the cylinder 41, and the end surface of the piston 42a near the bottom wall of the cylinder 41 is located. The second dead center is a position where the end surface of the piston 42a close to the end of the bottom wall of the cylinder 41 is located when the end surface of the piston 42a close to the end of the bottom wall of the cylinder 41 moves to the farthest distance away from the bottom of the working chamber. That is, the distance S is a distance between the end surfaces of the piston 42a near the end of the bottom wall of the cylinder 41 in both extreme states. The distance between the second air intake hole 6 and the first dead point is L, that is, the distance between the center line of the second air intake hole 6 and the first dead point is L.

Further, compressor 100 still includes tonifying qi outer tube 5, tonifying qi outer tube 5 is located the outside of casing 1, and with installation department 2 fixed connection, in order to communicate its inner chamber with bell mouth 3. The air supply outer tube 5 is communicated with the air suction inner tube 7, so that gas can be conveniently transmitted in the air suction inner tube 7.

Further, in this embodiment, tonifying qi outer tube 5 is used for the intercommunication the inner tube 7 of breathing in, the pipe diameter of tonifying qi outer tube 5 need with the pipe diameter phase-match of the inner tube 7 of breathing in, if the pipe diameter undersize of tonifying qi outer tube 5, then the inside flow resistance of circulation gas of tonifying qi outer tube 5 is big, if the pipe diameter that tonifying qi outer tube 5 set up is too big, not only can waste the manufacturing material, just the installation space that tonifying qi outer tube 5 took when the installation can be bigger, the installation of being not convenient for. Specifically, in the present embodiment, the outer diameter of the outer gas supply pipe 5 is d2, wherein d2 is greater than or equal to 6mm and less than or equal to 10mm, so as to reduce the installation space occupied by the inner gas supply pipe while achieving the purpose of adapting to the pipe diameter of the inner gas suction pipe 7.

Further, referring to fig. 5, the second suction hole 6 is provided with a first hole section 6a and a second hole section 6b which are communicated with each other, the diameter of the first hole section 6a is smaller than that of the second hole section 6b, and the suction inner tube 7 penetrates into the second hole section 6b and is communicated with the inside of the cylinder 41 through the first hole section 6 a. Through setting up the diameter of first hole section 6a is less than the diameter of second hole section 6b, then the pore wall of first hole section 6a with can form annular backstop face between the pore wall of second hole section 6b, the tip correspondence of inhaling inner tube 7 sets up on the backstop face, in order to reduce it is easy to drop by internal pressure influence in the use to inhale inner tube 7, ensures its firm nature of connecting, wherein, inhale inner tube 7 with adopt welded mode to be connected between the second hole section 6 b.

Further, in the present embodiment, the diameter of the first hole section 6a is related to the suction amount of the second suction hole 6, setting the diameter of the first hole section 6a too small results in insufficient suction amount of the second suction hole 6, setting the diameter of the first hole section 6ade1 too large results in large flow rate of the second suction hole 6, and there is a possibility that gas is discharged from the second suction hole 6 during compression of the cylinder 4. Specifically, in the embodiment, the diameter of the first hole section 6a is d3, wherein d3 is more than or equal to 0.6mm and less than or equal to 4mm, so that the air suction amount and the flow rate of the second air suction holes can be balanced.

Further, since the suction inner tube 7 and the second hole section 6b are directly connected by welding, if a gap exists between the suction inner tube 7 and the second hole section 6b, the outer periphery of the suction inner tube 7 cannot be abutted by the hole wall of the second hole section 6b, that is, the suction inner tube 7 is easily removed from the second hole section in a state where internal pressure is applied, and in order to avoid the gap existing between the suction inner tube 7 and the second hole section 6b after welding, specifically, in the present embodiment, the diameter of the second hole section 6b is d4, the outer diameter of the suction inner tube 7 is d1, and d1 is d4, so that the hole wall of the second hole section 6b can abut against the outer periphery of the suction inner tube, thereby playing a role of fixing and supporting, and achieving a good fixing effect.

In addition, in order to achieve the above object, the present invention further provides a refrigeration device, which includes the compressor 100 according to the above technical solution. It should be noted that, for the detailed structure of the compressor 100 of the refrigeration equipment, reference may be made to the above-mentioned embodiment of the compressor 100, and details are not described here; because the utility model discloses an above-mentioned compressor 100 has been used among the refrigeration plant, consequently, the utility model discloses refrigeration plant's embodiment includes all technical scheme of the whole embodiments of above-mentioned compressor 100, and the technological effect that reaches is also identical, no longer gives unnecessary details here.

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

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (15)

1. A compressor, comprising:

the mounting part is provided with a tapered hole in a penetrating mode, the tapered hole is communicated with the inside and the outside of the shell, and the tapered hole is gradually reduced from the inside of the shell to the outside of the shell;

the cylinder is arranged in the shell and comprises a cylinder body and a piston assembly, a first air suction hole is formed in the bottom of the cylinder body, a second air suction hole is formed in the side wall of the cylinder body, and the piston assembly is movably arranged in the cylinder body; and the number of the first and second groups,

and one end of the air suction inner pipe is communicated with the second air suction hole, and the other end of the air suction inner pipe is inserted into the conical hole.

2. The compressor of claim 1, wherein a seal is disposed between said suction inner tube and said tapered bore.

3. The compressor as claimed in claim 2, wherein an annular groove is formed on an outer circumference of an end of the suction inner pipe inserted into the tapered hole, and the sealing ring is correspondingly inserted into the annular groove.

4. The compressor of claim 1, wherein the taper of the tapered bore is 5-10 °.

5. The compressor as claimed in claim 1, wherein the suction inner tube has an outer diameter d1, wherein d 1mm 8mm is 3 mm.

6. The compressor of claim 5, wherein the diameters of the holes at both ends of the tapered hole are A and B, respectively, wherein A < d1 < B.

7. The compressor as claimed in claim 1, wherein a stepped hole is formed through the housing, and the stepped hole includes a small hole section and a large hole section which are connected in sequence from inside to outside;

the installation department includes erection joint, erection joint installs the macropore section, the bell mouth is seted up on the erection joint, the one end intercommunication of bell mouth the aperture section.

8. The compressor as claimed in claim 7, wherein the suction inner tube has an outer diameter D1, and the diameter of the small hole section is D1, wherein 1 mm. ltoreq. D1-D1. ltoreq.2 mm.

9. The compressor of claim 7, wherein the installation joint is provided in a cylindrical shape having a height H and a diameter D2, wherein H is 8mm or more and 20mm or less, and D2 is 12mm or more and 20mm or less.

10. The compressor of claim 1, wherein at least a portion of the suction inner tube is made of a non-metallic material.

11. The compressor of claim 1, wherein the piston assembly comprises a piston having a first dead center at the bottom of the cylinder and a second dead center away from the bottom of the cylinder in its moving stroke, the second suction hole is spaced from the first dead center by a distance L, and the first dead center is spaced from the second dead center by a distance S, wherein 0.5S < L.

12. The compressor of claim 1, further comprising an outer gas supply tube disposed outside the shell and fixedly connected to the mounting portion to communicate an inner cavity thereof with the tapered hole.

13. The compressor as claimed in claim 12, wherein the outer diameter of the outer tube for supplying air is d2, wherein d 2mm 10mm is 6 mm.

14. A refrigeration device, characterized by comprising a compressor according to any one of claims 1-13.

15. The refrigeration appliance according to claim 14 wherein said refrigeration appliance is a refrigerator.

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