CN216812097U - Compressor and refrigeration equipment - Google Patents
Compressor and refrigeration equipment Download PDFInfo
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- CN216812097U CN216812097U CN202220343552.2U CN202220343552U CN216812097U CN 216812097 U CN216812097 U CN 216812097U CN 202220343552 U CN202220343552 U CN 202220343552U CN 216812097 U CN216812097 U CN 216812097U
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Abstract
The utility model discloses a compressor and refrigeration equipment, wherein the compressor comprises a shell, a cylinder body, a piston assembly, a first external air suction pipe, a second external air suction pipe and a connecting pipe, wherein the bottom of a working cavity of the cylinder body is provided with a first air suction hole, and the side wall of the working cavity is provided with a second air suction hole; the second external suction pipe is arranged on the shell wall of the shell so as to input the refrigerant of the external second condensation flow path into the shell and flow into the second suction hole through the shell. According to the technical scheme provided by the utility model, the lower-pressure external first condensation flow path is communicated and conveyed into the cylinder body through the connecting pipe, when the cylinder body compresses the refrigerant gas in the working cavity, higher pressure is formed in the cylinder body, and the higher-pressure refrigerant of the second external condensation flow path is communicated and conveyed between the cylinder body and the shell, so that the pressure difference between the inside and the outside of the cylinder body is smaller, the compressed refrigerant gas in the cylinder body is prevented from leaking to the outside of the cylinder body due to overlarge pressure difference, and the problem that the cylinder body of the conventional compressor is easy to leak is solved.
Description
Technical Field
The utility model relates to the technical field of compressors, in particular to a compressor and refrigeration equipment.
Background
The compressor is used as the most core part and energy consumption big part of the refrigerating system, and higher requirements are also put on the refrigerating performance and the energy efficiency level of the compressor. The household refrigerator generally comprises a freezing chamber and a refrigerating chamber, and in the process of cooling the freezing chamber and the refrigerating chamber, the evaporation temperatures of corresponding refrigerants are different, and the pressures of the corresponding refrigerants are also different.
The existing compressor realizes freezing and cold-stored refrigeration function through a pipeline in a series connection mode, so that COP (energy efficiency ratio) of the refrigerator is low, in order to obtain better energy efficiency ratio, on the basis of being different from the traditional single-suction single-exhaust compression pump body mechanism, the novel single-cylinder double-independent-suction pump body structure has the capability of greatly improving the overall performance of the reciprocating compressor, in the working process of the compressor, in order to improve the COP of the efficiency, a second suction hole is correspondingly additionally arranged, but when the compressor cylinder compresses gas in the working process, due to overlarge pressure, the cylinder body has gaps in the manufacturing and assembling process, and gas leakage in the shell of the compressor is difficult to avoid.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a compressor and refrigeration equipment, and aims to solve the problem that a cylinder body of an existing compressor is prone to air leakage.
To achieve the above object, the present invention provides a compressor, wherein the compressor comprises:
a housing;
the cylinder body is provided with a first air suction hole at the bottom of a working cavity and a second air suction hole on the side wall;
the piston assembly comprises a piston movably arranged in the working cavity;
the first external air suction pipe is used for communicating with the external first condensation flow path;
the two ends of the connecting pipe are respectively connected with the first air suction hole and the first external air suction pipe; and the number of the first and second groups,
and the second external suction pipe is used for communicating with an external second condensation flow path, and is arranged on the shell wall of the shell so as to input the refrigerant of the external second condensation flow path into the shell and flow into the second suction hole through the shell.
Optionally, a pressure value of the refrigerant in the first external suction pipe is P1, a pressure value of the refrigerant in the casing is P2, and P1 is less than P2.
Alternatively, P2/P1 ≦ 6.
Optionally, the compressor further comprises a suction muffler, the suction muffler is provided with a silencing cavity, and an air inlet and an air outlet which are communicated with the silencing cavity, the air inlet is communicated with one end of the connecting pipe, and the air outlet is communicated with the first suction hole, so that the refrigerant flowing out of the connecting pipe flows into the cylinder body through the silencing cavity.
Optionally, the connecting pipe is made of metal or polymer material.
Optionally, one end of the connecting pipe is in sleeve fit with the air inlet.
Optionally, one end of the connecting pipe is in interference fit with the air inlet; and/or the presence of a gas in the gas,
the other end of the connecting pipe is fixed with the first external air suction pipe through welding.
Optionally, the connecting tube comprises at least one bend.
Optionally, the piston has a first dead point 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 air suction hole and the first dead center is L, the distance between the first dead center and the second dead center is S, and 0.5S is smaller than L.
The utility model also provides a refrigeration device comprising the compressor, wherein the compressor comprises:
a housing;
the cylinder body is provided with a first air suction hole at the bottom of a working cavity and a second air suction hole on the side wall;
the piston assembly comprises a piston movably arranged in the working cavity;
the first external air suction pipe is used for communicating the external first condensation flow path;
the two ends of the connecting pipe are respectively connected with the first air suction hole and the first external air suction pipe; and the number of the first and second groups,
and the second external suction pipe is used for communicating with an external second condensation flow path, and is arranged on the shell wall of the shell so as to input the refrigerant of the external second condensation flow path into the shell and flow into the second suction hole through the shell.
Optionally, the refrigeration appliance is a refrigerator.
In the technical scheme provided by the utility model, the compressor comprises a first external air suction pipe and a second external air suction pipe, the first external air suction pipe is used for being communicated with an external first condensation flow path, the second external air suction pipe is used for being communicated with an external second condensation flow path, the air pressure of a refrigerant of the external first condensation flow path is smaller than that of the external second condensation flow path, a first air suction hole is arranged at the bottom of a working cavity of the cylinder body, a second air suction hole is arranged on the side wall of the working cavity, the first air suction hole is directly communicated with the first external air suction pipe through a connecting pipe, the second external air suction pipe is arranged on the shell wall of the shell so as to input the refrigerant of the external second condensation flow path into the shell and flow into the second air suction hole through the shell, and when a piston moves in the working cavity, the refrigerant gas in the working cavity of the compressor is compressed to form high-pressure gas, the high-pressure refrigerant of the external second condensation flow path is conveyed to the shell and is positioned outside the cylinder body, therefore, in the working process of the cylinder body, because the pressure difference between the air pressure outside the cylinder body and the air pressure inside the cylinder body is smaller, therefore, the high-pressure refrigerant gas in the working cavity of the cylinder body is not easy to leak into the shell through the gap on the cylinder body, the first condensing flow path at lower pressure is communicated and conveyed into the cylinder body through the connecting pipe, when the cylinder body compresses the refrigerant gas in the working cavity, higher pressure is formed in the cylinder body, and the refrigerant with higher pressure in the second external condensation flow path is communicated and conveyed between the cylinder body and the shell, therefore, the pressure difference between the inside and the outside of the cylinder body is small, and the compressed refrigerant gas in the cylinder body is prevented from leaking to the outside of the cylinder body due to overlarge pressure difference, so that the problem that the cylinder body of the conventional compressor is easy to leak gas is solved.
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 schematic diagram of an internal structure of an embodiment of a compressor according to the present invention;
FIG. 2 is a schematic cross-sectional view of an embodiment of a compressor according to the present invention;
FIG. 3 is a schematic view showing the construction of the connection pipe, the suction muffler and the first external suction pipe of FIG. 1;
fig. 4 is an assembly view of the connection pipe, the suction muffler device and the first external suction pipe of fig. 1. The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
31 | Piston |
| 1 | |
4 | First external |
| 2 | |
5 | Connecting |
| 2a | |
51 | |
| 21 | First |
6 | Second external |
| 22 | Second |
7 | Air suction silencer |
| 3 | Piston assembly |
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 to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific 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.
The compressor is used as the most core part and energy consumption big part of the refrigerating system, and higher requirements are also put on the refrigerating performance and the energy efficiency level of the compressor. The household refrigerator generally comprises a freezing chamber and a refrigerating chamber, and in the process of cooling the freezing chamber and the refrigerating chamber, the evaporation temperatures of corresponding refrigerants are different, and the pressures of the corresponding refrigerants are also different. The existing compressor realizes refrigeration and cold storage refrigeration functions through a pipeline in a series connection mode, so that COP (coefficient of performance) of a refrigerator is low, in order to obtain better energy efficiency ratio, the novel single-cylinder double-independent-suction pump body structure is different from the traditional single-suction single-exhaust compression pump body mechanism, the novel single-cylinder double-independent-suction pump body structure has the capability of greatly improving the overall performance of the reciprocating compressor, and in order to improve the COP of the compressor during working, a second suction hole is correspondingly added at the same time, but when the compressor cylinder compresses gas in the working process, due to overlarge pressure, a cylinder body has gaps in the manufacturing and assembling process, and gas leakage is difficult to avoid in the shell of the compressor.
In order to solve the above problems, the present invention provides a compressor 100, and fig. 1 to 4 show an embodiment of the compressor 100 according to the present invention.
Referring to fig. 1 to 2, the compressor 100 includes a housing 1, a cylinder 2, a piston assembly 3, a first external air suction pipe 4, a second external air suction pipe 6, and a connection pipe 5, wherein a first air suction hole 21 is formed at the bottom of a working chamber 2a of the cylinder 2, and a second air suction hole 22 is formed in a side wall thereof; the piston assembly 3 comprises a piston 31 movably arranged in the working cavity 2 a; the first external suction pipe 4 is used for communicating with an external first condensation flow path; both ends of the connecting pipe 5 are respectively connected with the first air suction hole 21 and the first external air suction pipe 4; the second external suction pipe 6 is used to communicate with an external second condensation flow path, and the second external suction pipe 6 is mounted on a shell wall of the shell 1 to input the refrigerant of the external second condensation flow path into the shell 1 and flow into the second suction hole 22 through the shell 1.
In the technical scheme provided by the utility model, the compressor 100 comprises a first external suction pipe 4 and a second external suction pipe 6, wherein the first external suction pipe 4 is used for being communicated with an external first condensation flow path, the second external suction pipe 6 is used for being communicated with an external second condensation flow path, the refrigerant pressure of the external first condensation flow path is less than the refrigerant pressure of the external second condensation flow path, a first suction hole 21 is arranged at the bottom of a working cavity 2a of the cylinder body 2, a second suction hole 22 is arranged on the side wall of the working cavity, the first suction hole 21 is directly communicated with the first external suction pipe 4 through a connecting pipe 5, the second external suction pipe 6 is arranged on the shell wall of the shell 1 so as to input the refrigerant of the external second condensation flow path into the shell 1 and flow into the second suction hole 22 through the shell 1, when a piston 31 moves in the working cavity 2a, the refrigerant gas in the working cavity 2a of the compressor 100 is compressed to form high-pressure gas, and the high-pressure refrigerant in the external second condensation flow path is delivered to the housing 1 and is located outside the cylinder 2, so that in the working process of the cylinder 2, because the pressure difference between the air pressure outside the cylinder 2 and the air pressure inside the cylinder 2 is small, the high-pressure refrigerant gas in the working cavity 2a of the cylinder 2 is not easy to leak into the housing 1 through the gap on the cylinder 2, the external first condensation flow path with lower air pressure is communicated and delivered into the cylinder 2 through the connecting pipe 5, when the refrigerant gas in the working cavity is compressed by the cylinder, higher pressure is also formed in the cylinder 2, and the refrigerant with higher air pressure in the second external condensation flow path is communicated and delivered between the cylinder 2 and the housing 1, thus, the pressure difference between the inside and the outside of the cylinder 2 is small, and the compressed refrigerant gas in the cylinder 2 is prevented from leaking to the outside of the cylinder 2 due to the overlarge pressure difference, so that the problem that the cylinder of the conventional compressor 100 is easy to leak gas is solved.
It should be noted that, taking the compressor 100 as an example to describe 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 100 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 temperatures set in the freezing chamber and the refrigerating chamber are not the same, evaporation temperatures of the freezing chamber and the refrigerating chamber are different, and temperatures and pressures of the refrigerant after heat exchange in the freezing chamber and the refrigerating chamber are different.
Specifically, in this embodiment, the pressure value of the refrigerant in the first external suction pipe 4 is P1, the pressure value of the refrigerant in the casing 1 is P2, P1 is less than P2, preferably, P2/P1 is less than or equal to 6, so that by providing two parallel flow paths, namely, a freezing condensation flow path and a refrigerating condensation flow path, the compressor 100 can reasonably distribute the high-temperature and high-pressure refrigerant formed by compression to the freezing flow path and the refrigerating flow path, after the high-temperature and high-pressure refrigerant formed by compression by the compressor 100 passes through the evaporator corresponding to the freezing chamber, the temperature when the high-temperature and high-pressure refrigerant returns to the casing 1 of the compressor 100 is lower, the pressure P1 is lower, after the high-temperature and high-pressure refrigerant formed by compression by the compressor 100 passes through the evaporator corresponding to the refrigerating chamber, the temperature when the high-temperature and high-pressure refrigerant returns to the casing 1 of the compressor 100 is higher, and the pressure P2 is higher, the working chamber 2a of the cylinder 2 is simultaneously communicated with the first suction hole 21 and the second suction hole 22, in this way, the refrigerant with relatively low temperature and low pressure, which flows back from the freezing chamber, is delivered into the cylinder body 2 of the compressor 100 through the first air suction hole 21, and the refrigerant with relatively high temperature and high pressure, which flows back from the refrigerating chamber, is delivered into the compressor 100 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 increasing the air suction amount of the working cavity 2a of the cylinder body 2, further increasing the compression energy efficiency of the compressor 100, and realizing respective working conditions through two parallel flow paths to reduce power consumption.
It can be understood that, when the first external suction pipe 4 sucks air, noise is often generated due to the passing of the air flow and the periodic change of the air flow in the first external suction pipe 4 and the connecting pipe 5, the compressor 100 further includes a suction muffler 7, the suction muffler 7 is formed with a sound deadening chamber, and an air inlet and an air outlet which are communicated with the sound deadening chamber, the air inlet is communicated with one end of the connecting pipe 5, and the air outlet is communicated with the first suction hole 21, so that the refrigerant flowing out of the connecting pipe 5 flows into the cylinder 2 through the sound deadening chamber. Because the silencing cavity is arranged, the noise generated by the refrigerant is greatly weakened by the silencing cavity, so that the noise of the first external suction pipe 4 in the suction process is reduced to a certain extent.
Since the compressor 100 has a certain temperature during use, the adhesive should be selected to be able to withstand a temperature of 100 ℃ or higher, in this embodiment, the material of the connecting pipe 5 is metal or polymer material, and the polymer material or metal has a performance of not failing at a high temperature, so that the operation of the compressor 100 at a temperature of 100 ℃ or higher can be effectively guaranteed.
For convenience of installation, in this embodiment, one end of the connecting pipe 5 is in sleeve fit with the air inlet. Specifically, one end of the connection pipe 5 may be inserted into the air inlet, or the air inlet may be provided with an outwardly protruding hole wall inserted into one end of the connection pipe 5. Preferably, in order to ensure the sealing performance between the connection pipe 5 and the suction muffler device 7, one end of the connection pipe 5 is interference-fitted with the air inlet. In another embodiment, the other end of the connecting pipe 5 and the first external air suction pipe 4 are fixed by welding, but the connection mode of the connecting pipe 5 is not limited to the above welding, when the connecting pipe 5 is made of metal, both ends of the connecting pipe 5 may be welded, and when the connecting pipe 5 is made of polymer material, both ends of the connecting pipe 5 may be fixed by hot melting.
It can be understood that the longer the total length of the connecting pipe 5 and the first external air suction pipe 4, the smaller the vibration of the connecting pipe 5 and the first external air suction pipe 4, because the longer the length, the longer the path for transmitting the vibration, so as to disperse the energy of the vibration, therefore, referring to fig. 3 and 4, the connecting pipe 5 includes at least one bent section 51, and by providing the bent section 51, the length of the connecting pipe 5 can be effectively extended, and the total length of the connecting pipe 5 and the first external air suction pipe 4 can also be extended, so that the energy of the vibration can be dispersed, and the amplitude of the vibration can be reduced.
In the compressor 100 provided by the present invention, two parallel flow paths, i.e. a freezing condensation flow path and a refrigerating condensation flow path, are provided, i.e. the compressor 100 can reasonably distribute a 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 100 has a lower temperature and a lower pressure when returning to the compressor 100 after passing through an evaporator corresponding to a freezing chamber, and the high-temperature and high-pressure refrigerant formed by compression by the compressor 100 has a higher temperature and a higher pressure when returning to the compressor 100 after passing through an evaporator corresponding to a refrigerating chamber, a working chamber 2a of the cylinder 2 is simultaneously communicated with the first suction hole 21 and the second suction hole 22 so as to be able to pass through a first suction flow channel corresponding to the first suction hole 21 and a second suction flow channel corresponding to the second suction hole 22, so that the refrigerant with a relatively lower temperature and a relatively lower pressure returning from the freezing chamber is conveyed through the first suction hole 21 When the cylinder body 2 compresses the refrigerant gas delivered from the first suction hole 21, the second suction hole 22 can supplement air into the working cavity 2a, so that the suction amount of the working cavity 2a of the cylinder body 2 is increased, the compression energy efficiency of the compressor 100 is increased, respective working conditions are realized through two parallel flow paths, and the 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, referring to fig. 2, 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 hole 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 2 through the first air suction hole 21 in the first stroke, a certain air flow pressure is provided in the compression space. Therefore, when the airflow is input to the working chamber 2a of the cylinder 2 through the second intake hole 22, the airflow has a small influence on the first intake hole 21. 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 control valve group is in a closed state, the second suction hole 22 inputs an air flow into the working chamber 2a of the cylinder block 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. In addition, since the airflows from the first and second intake holes 21 and 22 are mixed in the working chamber 2a of the cylinder 2, the pressure of the airflow in the working chamber 2a of the cylinder 2 is lower than the pressure of the airflow passing through the second intake hole 22.
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 chamber 2a of the cylinder 2 is compressed in place. 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 100 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 100 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 concrete reality, the first condensing flow path corresponds to a freezing chamber of a refrigerator, the required refrigerating capacity is large due to the large refrigerating capacity of the freezing chamber, the pressure of the consumed refrigerant is large in the working process, the second condensing flow path corresponds to a refrigerating chamber of the refrigerator, the pressure of the consumed refrigerant is small due to the small refrigerating capacity of the refrigerating chamber, the pressure of the refrigerant flowing back to the first air suction holes 21 is far smaller than the pressure of the second air suction holes 22, but the refrigerant quantity of the first condensing flow path is large, so that when the compressor 100 works, the piston 31 mainly opens the first air suction holes 21 in the air suction stroke in the first half of the air suction to perform main air suction to suck the large refrigerant quantity in the condensing flow path corresponding to the freezing chamber, and the second air suction holes 22 are communicated with the working chamber 2a in the later half of the 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 100 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. 2, 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 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; since the compressor 100 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 100, 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 (11)
1. A compressor, comprising:
a housing;
the cylinder body is provided with a first air suction hole at the bottom of a working cavity and a second air suction hole on the side wall;
the piston assembly comprises a piston movably arranged in the working cavity;
the first external air suction pipe is used for communicating the external first condensation flow path;
the two ends of the connecting pipe are respectively connected with the first air suction hole and the first external air suction pipe; and the number of the first and second groups,
and the second external suction pipe is used for communicating with an external second condensation flow path, and is arranged on the shell wall of the shell so as to input the refrigerant of the external second condensation flow path into the shell and flow into the second suction hole through the shell.
2. The compressor as claimed in claim 1, wherein the pressure of the refrigerant in the first external suction pipe is P1, the pressure of the refrigerant in the shell is P2, and P1 < P2.
3. The compressor as claimed in claim 1, wherein P2/P1 is less than or equal to 6.
4. The compressor of claim 1, further comprising a suction muffler formed with a muffling chamber, and a gas inlet and a gas outlet communicating with the muffling chamber, wherein the gas inlet communicates with one end of the connecting pipe, and the gas outlet communicates with the first suction hole, so that the refrigerant flowing out of the connecting pipe flows into the cylinder through the muffling chamber.
5. The compressor of claim 1, wherein the connecting tube is made of metal or polymer material.
6. The compressor of claim 4, wherein one end of said connecting tube is in sleeved engagement with said inlet port.
7. The compressor of claim 6, wherein one end of the connecting tube is in interference fit with the air inlet; and/or the presence of a gas in the gas,
the other end of the connecting pipe is fixed with the first external air suction pipe through welding.
8. The compressor of claim 1, wherein the connecting tube includes at least one bend.
9. The compressor of claim 1, wherein said piston has a first stop at the bottom of said cylinder and a second stop away from the bottom of said cylinder during the active stroke;
the distance between the second air suction hole and the first dead center is L, the distance between the first dead center and the second dead center is S, and 0.5S is smaller than L.
10. A refrigeration apparatus, characterized by comprising a compressor according to any one of claims 1 to 9.
11. The refrigeration appliance according to claim 10 wherein said refrigeration appliance is a refrigerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220343552.2U CN216812097U (en) | 2022-02-18 | 2022-02-18 | Compressor and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220343552.2U CN216812097U (en) | 2022-02-18 | 2022-02-18 | Compressor and refrigeration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216812097U true CN216812097U (en) | 2022-06-24 |
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ID=82041124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220343552.2U Active CN216812097U (en) | 2022-02-18 | 2022-02-18 | Compressor and refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216812097U (en) |
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2022
- 2022-02-18 CN CN202220343552.2U patent/CN216812097U/en active Active
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