CN217926303U - Compressor and refrigeration equipment - Google Patents
Compressor and refrigeration equipment Download PDFInfo
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- CN217926303U CN217926303U CN202222047180.1U CN202222047180U CN217926303U CN 217926303 U CN217926303 U CN 217926303U CN 202222047180 U CN202222047180 U CN 202222047180U CN 217926303 U CN217926303 U CN 217926303U
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Abstract
The utility model discloses a compressor and refrigeration equipment, wherein, the compressor comprises a shell, a cylinder and a liquid storage device, and an oil storage pool is formed at the bottom of the shell; the air cylinder is arranged in the shell, and the shell is provided with an air suction port communicated with the air cylinder; the liquid accumulator is arranged at the lower end or the upper end of the shell, an air outlet of the liquid accumulator is communicated with the air cylinder through the air suction port, and the inner diameter of the shell is consistent with that of the liquid accumulator; the height of the liquid storage device is H, the maximum vertical distance from the center of the air suction port to the bottom of the oil storage pool is H, and the relation between H and H satisfies the following conditions: 0.1< -H/H <2. The utility model discloses technical scheme can reduce the transverse dimension of compressor to promote the reliability of compressor.
Description
Technical Field
The utility model relates to a compressor technical field, in particular to compressor and refrigeration plant.
Background
The conventional compressor has an accumulator disposed at a side of the casing, which results in a large radial space occupied by the compressor and a large vibration and noise generated when the compressor is used. In the process, part of the lubricating oil is dissolved with the refrigerant, and a large amount of refrigerant gas is discharged out of the cylinder and simultaneously takes away part of the lubricating oil (referred to as oil output). The excessive oil mass of spouting can form the oil film in the condenser inside, hinders the heat dissipation of refrigerant, and then influences refrigeration plant's refrigeration effect, and the compressor cylinder can be damaged because there is not oil to come the lubrication to the compressor that the oil mass is too big, and the refrigeration oil not only plays lubricated still has the sealing action, so oil level position descends in the oil bath of compressor bottom, easily leads to the compressor to produce the trouble because of lubricated badly.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a compressor aims at reducing the transverse dimension of compressor to promote the reliability of compressor.
To achieve the above object, the present invention provides a compressor, including:
the oil storage tank is formed at the bottom of the shell;
the cylinder is arranged in the shell, and the shell is provided with an air suction port communicated with the cylinder; and;
the liquid storage device is arranged at the lower end or the upper end of the shell, an air outlet of the liquid storage device is communicated with the air cylinder through the air suction port, and the inner diameter of the shell is consistent with that of the liquid storage device;
the height of the liquid storage device is H, the maximum vertical distance from the center of the air suction port to the bottom of the oil storage pool is H, and the relation between H and H satisfies the following conditions: 0.1< -H/H <2.
Optionally, a connecting cover body is arranged at the lower end of the shell, an opening is formed in the upper end of the liquid reservoir, the upper end opening of the liquid reservoir is covered by the connecting cover body, and the bottom of the oil storage pool is the bottom of the connecting cover body; wherein the height from the center of the air suction port to the lower end of the housing is h 1 The height from the lower end of the shell to the bottom of the connecting cover body is h 2 ，h、h 1 And h 2 The relationship satisfies: h = h 1 +h 2 。
Optionally, the housing and the connecting cover are integrally formed.
Optionally, the reservoir comprises a cylinder body with two open ends and a lower cylinder cover, and the lower cylinder cover covers the lower end opening of the cylinder body; the lower cylinder cover is connected with the lower end opening of the cylinder body in a welding mode, or the lower cylinder cover and the cylinder body are integrally formed.
Optionally, the housing and the reservoir are welded to the connection cover.
Optionally, the compressor further comprises a connecting pipe, one end of the connecting pipe extends into the liquid storage device, and the other end of the connecting pipe is connected with the air suction port so as to convey refrigerant.
Optionally, the connecting pipe includes a first pipe section and a second pipe section, the first pipe section is located in the reservoir, one end of the first pipe section bends toward the top end of the reservoir, the other end of the first pipe section extends out of the reservoir, one end of the second pipe section is sleeved and connected to the extending portion of the first pipe section, and the other end of the second pipe section is connected to the air suction port.
Optionally, the first pipe section and the second pipe section are integrally formed.
Optionally, the first pipe section is provided with an oil return hole.
Optionally, the opening direction of the oil return hole faces the bottom of the reservoir.
Optionally, the equivalent diameter of the oil return hole is d 1 The cross-sectional equivalent diameter of the connecting pipe is d 2 ，d 1 And d 2 Satisfies the following conditions: 0.1 percent<((d 1 ) 2 /(d 2 ) 2 )*100％≤1.5％。
Optionally, the oil return hole has a hole length L a The aperture of the oil return hole is L b Length of hole L a And the aperture L b Satisfies the relationship: 0.5<L a /L b ≤4。
Optionally, an effective volume of the reservoir is V, and a volume between a height surface of the oil return hole and the bottom of the reservoir is V, where V and V satisfy a relationship: 0.015V-woven cloth-v is covered with 0.5V.
The utility model also provides a refrigeration plant, include as above the compressor.
According to the technical scheme of the utility model, the shell, the air cylinder and the liquid storage device are adopted, and the oil storage pool is formed at the bottom of the shell; the air cylinder is arranged in the shell, and the shell is provided with an air suction port communicated with the air cylinder; the reservoir is arranged at the lower end or the upper end of the shell, and the radial installation space required by the compressor can be greatly reduced by arranging the reservoir below or above the shell. An air outlet of the liquid storage device is communicated with the air cylinder through the air suction port, and the inner diameter of the shell 10 is consistent with that of the liquid storage device 30; the height of the liquid storage device is H, the maximum vertical distance from the center of the air suction port to the bottom of the oil storage pool is H, and the relation between H and H satisfies the following conditions: 0.1-straw H/H <2. By having the height H of the reservoir and the height H of the reservoir satisfy the relationship: 0.1< H/H <2, thereby improving the oil output of the compressor by adjusting the height of the liquid storage device on the premise of not enlarging the inner diameter of the shell or increasing the original height of the oil pool, or improving the oil output of the compressor by increasing the height of the oil storage pool on the premise of not changing the height and the capacity of the liquid storage device, thereby effectively improving the heat exchange efficiency and the energy efficiency index of the refrigeration cycle device.
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 embodiments or the prior art descriptions 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 structural view of an embodiment of the compressor of the present invention;
FIG. 2 is a graph of the ratio of H/H versus the maximum vibration of the compressor;
FIG. 3 is a graph showing the relationship between the H/H ratio and the oil discharge of the compressor;
fig. 4 is a schematic structural view of another embodiment of the compressor of the present invention;
FIG. 5 is (d) 1 ) 2 /(d 2 ) 2 A graph of the relationship between the ratio of (d) and the discharge temperature of the compressor;
FIG. 6 is an enlarged view taken at A in FIG. 1;
FIG. 7 is an enlarged view at B in FIG. 4;
FIG. 8 is a graph of the relationship between the ratio of V/V and the cooling capacity of the compressor;
FIG. 9 is a graph of the relationship between the ratio of V/V and the inlet force of the compressor.
The reference numbers indicate:
the realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly 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 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.
The utility model provides an embodiment of compressor. The compressor is generally classified into a piston compressor, a screw compressor, a centrifugal compressor, a linear compressor, and the like. A piston compressor generally consists of a casing, a motor, a cylinder, a piston, control equipment (starter and thermal protector) and a cooling system. The cooling modes include oil cooling, air cooling and natural cooling. The linear compressor has no shaft, no cylinder, and no sealing and heat dissipating structure. There are 5 major types of compressors employed in the refrigeration and air conditioning industry: reciprocating, screw, rotary, scroll, and centrifugal, with reciprocating being the most used compressor in small and medium size commercial refrigeration systems. Screw compressors are used primarily in large commercial and industrial systems. Rotary compressors and scroll compressors are mainly used in household and small capacity commercial air conditioning devices, and centrifugal compressors are widely used in air conditioning systems for large buildings. Domestic refrigerator and air conditioner compressors are nowadays of the positive displacement type, which can be divided into reciprocating and rotary types. The reciprocating compressor uses a piston, a crank, a connecting rod mechanism or a piston, a crank and a sliding pipe mechanism, and the rotary compressor mainly uses a rolling rotor compressor. In commercial air conditioners, the air conditioner is mostly centrifugal type, vortex type or screw type.
The conventional compressor has an accumulator disposed at a side of the casing, which results in a large radial space occupied by the compressor and a large vibration and noise generated when the compressor is used. In the process, part of the lubricating oil is dissolved with the refrigerant, and along with a large amount of refrigerant gas, part of the lubricating oil is taken away (called oil output) while being discharged out of the cylinder. The excessive oil mass of spouting can form the oil film in the condenser inside, hinders the heat dissipation of refrigerant, and then influences refrigeration plant's refrigeration effect, and the compressor cylinder can be damaged because there is not oil to come the lubrication to the compressor that the oil mass is too big, and the refrigeration oil not only plays lubricated still has the sealing action, so oil level position descends in the oil bath of compressor bottom, easily leads to the compressor to produce the trouble because of lubricated badly. For the above-mentioned faults, it is often adopted to enlarge the inner diameter of the compressor shell or increase the height of the oil pool, and then fill the excessive freezing lubricating oil in the shell, so as to avoid the problem of excessive drop of the oil level position caused by discharging part of the freezing lubricating oil, however, the above-mentioned solution will increase the cost of the compressor on one hand; on the other hand, the quantity of lubricating oil contained in the refrigerant gas cannot be reduced, so that a large amount of refrigeration lubricating oil circulates in the system, and the heat exchange efficiency and the energy efficiency index of the system are directly reduced.
The utility model discloses aim at improving the compact structure nature of reservoir 30 and casing 10, reduce the horizontal size of this compressor 100 to promote compressor 100's reliability.
Referring to fig. 1, in an embodiment of the present invention, the compressor 100 includes: the air cylinder device comprises a shell 10, an air cylinder 20 and a liquid storage device 30, wherein an oil storage pool 12 is formed at the bottom of the shell 10; the cylinder 20 is arranged in the shell 10, and the shell 10 is provided with an air suction port 11 communicated with the cylinder 20; the reservoir 30 is disposed at the lower end or the upper end of the housing 10, an air outlet 33 of the reservoir 30 is communicated with the cylinder 20 through the air suction port 11, and the inner diameter of the housing 10 is the same as the inner diameter of the reservoir 30.
The height of the reservoir 30 is H, the maximum vertical distance from the center of the suction port 11 to the bottom of the oil storage pool 12 is H, and the relationship between H and H satisfies: 0.1< -H/H <2.
The center of the intake port 11 is the same as the center of the intake port 21 of the cylinder 20, and in the circular intake port 11, the center of the intake port 11 is the center of the circle, and the square intake port 11 is the intersection of the diagonals.
In one embodiment, the reservoir 30 is disposed at a lower end of the housing 10.
In another embodiment, the reservoir 30 is provided at the upper end of the housing 10.
The inner diameter of the case 10 is identical to the inner diameter of the reservoir 30, and the identical inner diameter is defined as the inner diameter r of the case, i.e., the case 10, within a certain range 1 And inner diameter r of reservoir 30 2 Satisfies the following relationship: r is not less than 0.98 1 /r 2 Less than or equal to 1.02. That is, the inner diameter of the housing 10 may be larger than the inner diameter of the reservoir 30 within a certain range if r 1 /r 2 More than 1.02, the structure of the shell 10 and the liquid storage device 30 needs to be changed or other parts need to be added to avoid the problem of sleeving; alternatively, the inner diameter of the reservoir 30 may be larger than the inner diameter of the housing 10 if r 1 /r 2 Is less than 0.98, so that the structure of the reservoir 30 and the shell 10 needs to be changed or other parts need to be added to avoid the problem of sleeving. Further, the design cost needs to be increased and the manufacturing difficulty needs to be increased.
By providing the accumulator 30 below or above the housing 10, the radial installation space required for the compressor 100 can be greatly reduced. Compare and locate in prior art reservoir 30 the scheme of this somatic part week side, the embodiment of the utility model discloses a can improve the compact structure nature of reservoir 30 and casing 10, reduce the transverse dimension of this compressor 100 to reduce compressor 100's whole quick-witted size, do benefit to the miniaturization that realizes compressor 100, improved the loading volume.
By making the height H of the reservoir and the height H of the accumulator 30 satisfy the relationship: 0.1< H/H <2, thereby under the precondition that the inner diameter of the shell 10 is not enlarged or the original height of the oil pool is not increased, the oil output of the compressor 100 is improved by adjusting the height of the liquid storage device 30, or the height of the oil storage pool is increased on the premise that the height and the capacity of the liquid storage device 30 are not changed, and then the lubricating oil with larger storage capacity can be filled in the shell 10, so as to avoid the problem that the oil surface position is excessively reduced due to the discharge of part of the lubricating oil, therefore, even if part of the lubricating oil is discharged out of the shell 10 along with the refrigerant gas, the oil surface position of the oil storage pool in the shell 10 can not be greatly reduced, and further, the oil surface position in the oil storage pool of the shell 10 is effectively stabilized, the lubricating performance in the compression process of the air cylinder 20 is prevented from being influenced due to the excessively reduced amplitude of the oil surface position, and meanwhile, the lubricating oil content in the refrigerant gas which is compressed and discharged out of the air cylinder 20 can be effectively reduced, and the circulating lubricating oil amount in the refrigeration cycle device is greatly reduced, and the heat exchange efficiency and the energy efficiency of the refrigeration cycle device are effectively improved.
For example, in one embodiment, the maximum condensing pressure of the compressor 100 is greater than 3MPa.
Referring to fig. 2 and 3, with the height of the reservoir 30 fixed:
as shown in fig. 2, when H/H > 2, the height H of the oil reservoir 12 is much higher than the height H of the accumulator 30, on one hand, the height of the whole machine is increased significantly, and the increase of the oil reservoir 12 causes the cylinder 20 to move upwards, the center of gravity of the whole compressor 100 moves upwards synchronously, which causes vibration deterioration, and generates large vibration and noise during use; on the other hand, at this time, to ensure the oil level height in the compressor 100, a large amount of oil needs to be sealed, which increases the cost of the compressor 100 and is poor in economy.
As shown in FIG. 3, when H/H < 0.1, on the other hand, the oil level rises significantly as the space of the reservoir 12 decreases, resulting in further deterioration of the oil discharge amount. That is, some kinds of lubricating oil are compatible with the refrigerant, and some lubricating oil (referred to as oil discharge amount) is carried away along with a large amount of refrigerant gas while being discharged out of the cylinder 20. The compressor 100 with too large oil discharge amount may damage the cylinder 20 of the compressor 100 because of lack of lubrication, and may cause malfunction of the compressor 100 due to poor lubrication. On the other hand, the closer the reservoir 30 is to the cylinder 20, the more reliably the slide groove/inner diameter of the cylinder 20 deforms due to thermal effects, which may cause the slide to wear or even jam.
For example, on the premise of fixing the height of the oil reservoir:
when H/H is greater than 2, the height of the liquid accumulator 30 is too small, and the liquid storage amount is insufficient, which may cause the liquid return of the compressor 100 and performance degradation. As can be seen, in general, the liquid return refers to a phenomenon or process of liquid refrigerant in the evaporator of the compressor 100 returning to the compressor 100 through the suction circuit when the compressor 100 is in operation. Resulting from the refrigerant returning to the compressor 100 in liquid form to mix with the lubricant. When the lubricating oil is diluted to a sufficiently low level, the bearings may not be sufficiently lubricated, which may cause increased wear, and thus, increase of current in compressor 100, increase of noise and vibration, and finally, damage to compressor 100, and decrease of performance of compressor 100 may occur.
And when H/H is less than 0.1, on one hand, the height of the liquid accumulator 30 is too large, which causes waste of excessive refrigerants and influences the refrigeration effect.
In another embodiment, the compressor 100 has a maximum condensing pressure less than 3MPa. In this usage scenario, the height of the accumulator 30 can be greatly reduced, so as to reduce the size of the compressor 100 in the height direction, thereby reducing the overall size of the compressor 100.
According to the technical scheme of the utility model, a shell 10, a cylinder 20 and a liquid storage device 30 are adopted, and an oil storage pool 12 is formed at the bottom of the shell 10; the cylinder 20 is arranged in the shell 10, and the shell 10 is provided with an air suction port 11 communicated with the cylinder 20; the reservoir 30 is arranged at the lower end or the upper end of the shell 10, an air outlet 33 of the reservoir 30 is communicated with the cylinder 20 through the air suction port 11, and the inner diameter of the shell is consistent with that of the reservoir; the height of the reservoir 30 is H, the maximum vertical distance from the center of the air suction port 11 to the bottom of the oil storage pool is H, and the relationship between H and H satisfies: 0.1-straw H/H <2. By providing the accumulator 30 below or above the housing 10, the radial installation space required for the compressor 100 can be greatly reduced. By making the height H of the reservoir and the height H of the reservoir 30 satisfy the relationship: H/H is less than 2 and is more than 0.1, so that the oil quantity of the compressor 100 is improved by adjusting the height of the liquid storage device 30 on the premise of not enlarging the inner diameter of the shell 10 or increasing the original height of the oil pool, or the oil quantity of the compressor 100 is improved by increasing the height of the oil storage pool on the premise of not changing the height and the capacity of the liquid storage device 30, and the heat exchange efficiency and the energy efficiency index of the refrigeration cycle device are effectively improved.
After accumulator 30 is placed under the shell 10 of compressor 100, the oil reservoir is at a high pressure region and accumulator 30 is at a low pressure region. Referring to fig. 4, in an embodiment, for convenience of installation, the housing 10 further includes a connecting cover 13, and the connecting cover 13 is used for connecting the housing 10 and the reservoir 30, in this solution, the housing 10 may be configured to be open at two ends, on one hand, to facilitate installation of internal components, in particular, the connecting cover 13 and the housing 10 cooperate to form the oil reservoir 12, and the height of the edge of the housing 10 from the center of the air inlet 21 of the air cylinder 20 to the lower end opening is h 1 One end of the connecting cover body 13 is provided with an opening, such as a bowl shape, and the height from the lower end of the shell 10 to the bottom of the connecting cover body 13 is h 2 ，h、h 1 And h 2 The relationship satisfies: h = h 1 +h 2 . Thus, only (h) needs to be calculated 1 +h 2 ) In relation to H, such that it satisfies the condition of 0.1< (H) 1 +h 2 ) The ratio of/H is less than 2. In addition, the bottom of the casing is generally in an arc transition shape, so that in order to measure the height of the oil storage pool 12 conveniently, in the actual measuring process, the height from the center of the air suction port 11 to the edge of the lower end of the casing 10 and the height of the side wall connected with the cover 13 can be measured only from the outer side of the casing 10, and the measuring process is simplified.
In another embodiment, the housing 10 is provided with an upper opening for conveniently installing the driving device and the cylinder 20, and the housing 10 and the connecting cover 30 are integrally formed. The oil storage pool is located at the lower end of the shell 10, and the periphery of the upper opening of the liquid storage device 30 is connected with the periphery of the lower end of the shell 10 in a welding mode, so that the sealing of the liquid storage device 30 is guaranteed.
In order to facilitate the installation and assembly of the accumulator 30, the accumulator 30 includes a cylinder 31 with both ends open and a lower cylinder cap 32, and the lower cylinder cap 32 covers the lower end opening of the cylinder 31.
In an embodiment, the lower cylinder cover 32 is welded to the lower opening of the cylinder block 31.
In another embodiment, the lower cylinder cover 32 and the cylinder 31 are integrally formed.
With reference to fig. 4, the liquid storage device 30 includes a cylinder 31 and a lower cylinder cover 32 with openings at two ends, the lower end of the cylinder 31 is connected to the lower cylinder cover 32, and the edge of the opening at the upper end of the cylinder 31 is welded to the lower periphery of the connecting cover 13 to ensure sealing; to facilitate the measurement of the height of the reservoir 30, the upper end opening edge to the lower end opening edge of the cylinder 31 is defined by a height H 1 ，H 1 Is similar to the height of H, so that only (H) needs to be calculated 1 +h 2 ) And H 1 So as to satisfy 0.1< (h) 1 +h 2 )/H 1 Is <2, thereby facilitating measurement and calculation of the relationship between the height of the reservoir 30 and the height of the reservoir 12.
Specifically, the connection cover 13 is welded to the case 10 and the reservoir 30. H to avoid the influence of stress and the like caused by welding the connecting cover 13 and the housing 10 on the operation of the cylinder 20 1 Not less than the distance from the center of the intake port 21 of the cylinder 20 to the bottom of the cylinder 20.
Further, the compressor 100 further includes a connecting pipe 50, one end of the connecting pipe 50 extends into the liquid reservoir 30, and the other end of the connecting pipe 50 is communicated with the air inlet 21 of the air cylinder 20, so as to facilitate refrigerant transportation.
In one embodiment, an air outlet is disposed at the bottom of the side of the liquid reservoir 30, and one end of the connecting pipe 50 extends out of the liquid reservoir 30 through the air outlet and is bent upward, so as to increase the air inlet height of the connecting pipe 50 and prevent the liquid refrigerant from being sucked.
In other embodiments, the air outlet of the accumulator 30 is disposed at the top of the side, i.e. the position close to the upper opening of the accumulator 30, to increase the air inlet height of the connecting pipe 50, so as to avoid the generation of liquid refrigerant suction.
Specifically, in order to facilitate installation of the connection pipe 50, the connection pipe 50 includes a first pipe section 51 and a second pipe section 52, the first pipe section 51 is located in the reservoir 30, one end of the first pipe section 51 is bent toward the top end of the reservoir 30, the other end of the first pipe section 51 is connected to the exhaust port and extends out of the exhaust port, one end of the second pipe section 52 is sleeved on the extending portion of the first pipe section 51, and the other end of the second pipe section 52 is connected to the air inlet 21 of the air cylinder 20.
To ensure the sealing property, a sealing process is performed in a gap between the air outlet of the reservoir 30 and the first pipe section 51.
Without loss of generality, in other solutions, the first pipe section 51 and the second pipe section 52 may also be integrally formed, such as casting, injection molding, and the like.
Further, in order to improve the efficiency and reliability of the compressor 100, the first pipe section 51 is provided with an oil return hole 511 to replenish the oil circulated and carried away in the reservoir 30 to the oil reservoir 12. In one embodiment, the oil return hole 511 may be disposed above the first pipe section 51; in another embodiment, the oil return hole 511 may be disposed at a side of the first pipe.
For good oil return effect, in one embodiment, the oil return hole 511 is opened toward the bottom of the reservoir 30. Specifically, the oil return hole 511 is provided in the first pipe section 51 near the air outlet 33.
Therefore, on the premise of not enlarging the inner diameter of the shell 10 or increasing the original height of the oil reservoir, the lubricating oil deposited at the bottom of the liquid reservoir 30 can enter the connecting pipe 50 through the oil return hole 511, and is sucked into the oil reservoir in the shell 10 by the cylinder 20 so as to supplement the lubricating oil in the oil reservoir, and the heat exchange efficiency and the energy efficiency index of the refrigeration cycle device are effectively improved. The liquid lubricant oil in the oil-gas mixture entering the reservoir 30 falls to the bottom of the reservoir 30 under the action of gravity, and the lubricant oil at the bottom of the reservoir 30 can be returned to the oil reservoir through the oil return hole 511 of the connecting pipe 50, so as to realize the circulation of the lubricant oil in the oil reservoir and the reservoir 30.
To ensure smoothness of oil return and avoid performance of the compressor 100.
With reference to fig. 5 and6, further, the equivalent diameter of the oil return hole 511 is d 1 (equivalent diameter means the diameter of a circular pipe having the same hydraulic radius), and the equivalent diameter of the cross section of the connection pipe 50 is d 2 ，d 1 And d 2 Satisfies the following conditions: 0.1 percent of<((d1) 2 /(d2) 2 )*100％≤1.5％。
In order to ensure a small amount of liquid return and avoid liquid impact on the compressor, d is more than or equal to 0.1% 1 ) 2 /(d 2 ) 2 ≤1.5％。
The oil return amount of the compressor is visually reflected in the change of the exhaust temperature, and the return liquid can cause the small delta T, (d) 1 ) 2 /(d 2 ) 2 < 0.1%, or (d) 1 ) 2 /(d 2 ) 2 More than 1.5 percent, small delta T, reduced performance of the compressor, low temperature of an oil pool, reduced viscosity of oil in the compressor, and insufficient lubrication of a friction pair to cause reliability risk.
Referring to fig. 7, further, in order to ensure the smoothness of oil return and the performance of the compressor, the hole length of the oil return hole (511) is La, the hole diameter of the oil return hole (511) is Lb, and the hole length La and the hole diameter Lb satisfy the relationship: 0.5 sP La/Lb is less than or equal to 4.
According to the flow rate of the return liquid of the short hole
The pressure difference between the inner side and the outer side of the short hole, ar is the area of the oil return hole 511, and the actual liquid return flow through the short hole is calculated as follows: (d) 1 ) 2 /(d 2 ) 2 The xcq should be less than 1.5% x suction mass flow to ensure performance of the compressor 100 under slight blow-back. (d) 1 ) 2 /(d 2 ) 2 And the smooth oil return is ensured when the multiplied Cq is larger than 0.1 percent of flow. Therefore, the oil return hole 511 is set to be a short hole, and the oil return amount and the oil return smoothness are ensured.
Referring to fig. 1 and fig. 4, further, to ensure an oil return effect of the oil return hole 511 and avoid performance influence on the compressor 100, an effective volume of the component of the liquid accumulator 30 is V, a volume between a height plane of the oil return hole 511 and the bottom of the liquid accumulator 30 is V, and V satisfies: v is more than 0.015 and less than 0.5V.
The effective volume V means: the first tube segment 511 is close to the volume connecting the inlet of the cover 13 to the bottom of the reservoir 30.
Referring to fig. 8, when V < 0.015V, that is, when V is small, the liquid storage amount is insufficient, when the system operates with liquid, the liquid return of the compressor 100 is caused, and there is a liquid impact risk, which affects the performance of the compressor 100, that is, the performance is reduced due to the liquid return.
Referring to fig. 9, when V > 0.5V, the oil storage volume is too large, which makes it difficult for the oil return hole 511 to return oil, and after a certain period of operation, the oil level in the oil storage tank is lowered, which further causes insufficient lubrication of the friction pair, and increases the input force.
Further, when the compressor 100 is disposed in the refrigeration equipment, the refrigerant charge amount of the refrigeration equipment is D, and the relationship between the effective volume V and D of the accumulator 30 satisfies: v rho is more than 0.5D and less than D, the density of the liquid refrigerant is rho, and the liquid reservoir 30 is more than 50% of the liquid storage amount of the whole refrigerant so as to ensure the maximum margin of the refrigerant in a deposition state. Thereby improving the performance of the compressor 100.
Further, in order to improve the performance of the compressor 100, the compressor 100 further includes a muffler 60, the muffler 60 is connected to the cylinder 20, the setting of the muffler 60 ensures the tightness of the high-pressure gas in the cylinder 20, ensures the air tightness of the muffling chamber, and avoids the high-pressure gas from leaking, so as to improve the performance stability of the refrigeration compressor 100, and further improve the use performance of the compressor 100. Thereby improving the performance stability of the refrigeration compressor 100 and further improving the usability of the compressor 100.
Further, the inner diameter of the housing 10 is d 3 The volume enclosed between the part above the upper end surface of the cylinder 20 and the upper end surface of the upper silencer 60 and the periphery of the casing 10 is v 1 And the refrigerant charge of the air conditioner is D, and the following requirements are met:
[Π(h 1 +h 2 )×(d 3 ) 2 /4+v 1 ]/[Π(h 1 +h 2 )×(d 3 ) 2 /4+v 1 +D]≥0.18
the minimum oil sealing amount and the system refrigerant filling amount are guaranteed, so that the requirement on the dilution degree is met, and the requirement on the reliability of the pump body is further met.
Without loss of generality, the compressor 100 may be a single cylinder 20 compressor 100; of course, the compressor 100 may also be a dual cylinder 20 compressor 100, and in the case of the dual cylinder 20 compressor 100, the relevant parameter (h) is 1 /v 1 ) The corresponding positions of the lower cylinders 20 are the measuring objects.
The utility model discloses still provide a refrigeration plant, this refrigeration plant includes compressor 100, and above-mentioned embodiment is referred to this compressor 100's concrete structure, because this refrigeration plant has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here.
The refrigerating equipment can be divided into compression refrigerating equipment, absorption refrigerating equipment, steam injection refrigerating equipment, heat pump refrigerating equipment, electric heating refrigerating equipment and the like. The refrigerating apparatus is mainly composed of a compressor 100, an expansion valve, an evaporator, a condenser, accessories and pipelines. Such as refrigerators, air conditioners, and the like.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (14)
1. A compressor, comprising:
the oil storage tank is formed at the bottom of the shell;
the cylinder is arranged in the shell, and the shell is provided with an air suction port communicated with the cylinder; and;
the liquid storage device is arranged at the lower end or the upper end of the shell, an air outlet of the liquid storage device is communicated with the air cylinder through the air suction port, and the inner diameter of the shell is consistent with that of the liquid storage device;
the height of the liquid storage device is H, the maximum vertical distance from the center of the air suction port to the bottom of the oil storage pool is H, and the relation between H and H satisfies the following conditions: 0.1-straw H/H <2.
2. The compressor according to claim 1, wherein the housing includes a connecting cover, the upper end of the accumulator is open, the connecting cover covers the upper end of the accumulator, and the bottom of the oil reservoir is the bottom of the connecting cover; wherein the height from the center of the air suction port to the lower end of the housing is h 1 The height from the lower end of the shell to the bottom of the connecting cover body is h 2 ，h、h 1 And h 2 The relationship satisfies: h = h 1 +h 2 。
3. The compressor of claim 2, wherein the housing and the connecting cover are integrally formed.
4. The compressor according to claim 2, wherein the accumulator includes a cylinder body opened at both ends and a lower cylinder head which closes a lower end opening of the cylinder body;
the lower cylinder cover is connected with the lower end opening of the cylinder body in a welded mode, or the lower cylinder cover and the cylinder body are integrally formed.
5. The compressor of claim 2, wherein the shell and the accumulator are welded to the connection cover.
6. The compressor of any one of claims 1 to 5, further comprising a connection pipe having one end extended into the accumulator and the other end connected to the suction port for refrigerant delivery.
7. The compressor of claim 6, wherein the connection pipe includes a first pipe section and a second pipe section, the first pipe section is located in the accumulator, one end of the first pipe section is bent toward a top end of the accumulator, the other end portion of the first pipe section extends out of the accumulator, one end of the second pipe section is connected to the first pipe section extension, and the other end of the second pipe section is connected to the suction port.
8. The compressor of claim 7, wherein the first tube segment and the second tube segment are integrally formed.
9. The compressor of claim 7 wherein said first tube segment is provided with oil return holes.
10. The compressor of claim 9, wherein the opening of the oil return hole is directed toward the bottom of the accumulator.
11. The compressor of claim 10, wherein the oil return hole has an equivalent diameter d 1 The cross-sectional equivalent diameter of the connecting pipe is d 2 ，d 1 And d 2 Satisfies the following conditions: 0.1 percent of<((d 1 ) 2 /(d 2 ) 2 )*100％≤1.5％。
12. The compressor of claim 11, wherein said oil return hole has a hole length L a The aperture of the oil return hole is L b Length of hole L a And a pore diameter L b Satisfies the relationship: 0.5<L a /L b ≤4。
13. The compressor of claim 12, wherein the effective volume of the accumulator is V, and the volume between the height plane of the oil return hole and the bottom of the accumulator is V, wherein the relationship between V and V satisfies: 0.015V < -v < -0.5V.
14. A refrigeration apparatus, characterized by comprising a compressor according to any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222047180.1U CN217926303U (en) | 2022-08-04 | 2022-08-04 | Compressor and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222047180.1U CN217926303U (en) | 2022-08-04 | 2022-08-04 | Compressor and refrigeration equipment |
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| Publication Number | Publication Date |
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| CN217926303U true CN217926303U (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222047180.1U Active CN217926303U (en) | 2022-08-04 | 2022-08-04 | Compressor and refrigeration equipment |
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| CN (1) | CN217926303U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024027439A1 (en) * | 2022-08-04 | 2024-02-08 | 广东美芝制冷设备有限公司 | Compressor and refrigeration apparatus |
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2022
- 2022-08-04 CN CN202222047180.1U patent/CN217926303U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024027439A1 (en) * | 2022-08-04 | 2024-02-08 | 广东美芝制冷设备有限公司 | Compressor and refrigeration apparatus |
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