Compressor

Abstract

The utility model relates to the technical field of compressors, and discloses a compressor which comprises a shell, an air cylinder and a flow guide piece. The shell is provided with a containing cavity, an exhaust port and an air suction port; the air cylinder is provided with a first upper end face and a first lower end face, the exhaust port is located above the first upper end face, and the air suction port is located below the first upper end face. The flow guide piece is arranged in the containing cavity and connected to the air cylinder, and a flow guide channel is formed in the flow guide piece; the flow guide piece is provided with a second upper end face and a second lower end face, and the second upper end face is higher than the first upper end face; according to the compressor provided by the utility model, the flow guide piece is arranged on the air cylinder, so that the oil discharge rate of the compressor can be reduced, the waste of engine oil is reduced, the working efficiency of the compressor is improved, the reliability of the compressor is improved, the fault risk of the compressor is reduced, and the service life of the compressor is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor technical field especially is related to a kind of compressors. BACKGROUND

[0002] In the compressor field, rotor compressor is widely applied due to its compact structure, stable operation and other advantages;However, when the rotor compressor of traditional structure is in high-speed operation state, a series of problems to be solved will appear.

[0003] During the operation of the compressor, the space above the cylinder in the housing of the compressor is filled with a mixture of oil and refrigerant;This is because the high-pressure gas refrigerant compressed and discharged by the compressor working chamber produces a strong impact, causing the mixed liquid to be retained and suspended in the space above the cylinder;With the high-speed rotation of the gas, these mixed liquids form vortexes and accumulate in the space above the cylinder, making it difficult for the gas in the lower space of the compressor to flow to the upper space of the cylinder and causing the gas to push the mixed liquid to the compressor exhaust port for discharge, resulting in high oil discharge rate of the compressor;This phenomenon leads to serious consequences: on the one hand, the oil discharge of the compressor increases significantly, too much oil is brought out, causing resource waste;On the other hand, the large oil discharge directly leads to the reduction of the working efficiency of the compressor, which cannot meet the increasing demand for high efficiency and energy saving;In addition, this problem also affects the reliability of the compressor, increases the risk of compressor failure and shortens the service life of the compressor. SUMMARY

[0004] To solve at least one of the problems in the prior art, the utility model provides a compressor, which can reduce oil waste and improve working efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides a kind of compressor, including housing, cylinder and flow guide piece;The housing has accommodating cavity, the housing is equipped with with the exhaust port and suction port being communicated with the accommodating cavity, the suction port is located below the exhaust port;The cylinder is arranged in the accommodating cavity, the cylinder has first upper end face and first lower end face, the exhaust port is located above the first upper end face, and the suction port is located below the first upper end face;The flow guide piece is arranged in the accommodating cavity and connected to the cylinder, the flow guide piece has flow guide passage in the inside, the flow guide piece has second upper end face and second lower end face, the second upper end face is equipped with with the first opening being communicated with the flow guide passage, and the second lower end face is equipped with with the second opening being communicated with the flow guide passage, and the second upper end face is higher than the first upper end face.

[0006] In some embodiments, the height difference between the second upper end face and the first upper end face is a, which satisfies: 5mm≤a.

[0007] In some embodiments, the air inlet is located above the first lower end surface, and the second lower end surface is lower than the first lower end surface.

[0008] In some embodiments, the height difference between the first lower end surface and the second lower end surface is b, and 5mm≤b.

[0009] In some embodiments, the number of the flow guides is multiple.

[0010] In some embodiments, the flow guide is in a circular tube structure.

[0011] In some embodiments, the flow guide comprises a first tube segment, a second tube segment and a third tube segment, the first tube segment has the second upper end surface, the third tube segment has a second lower end surface, one end of the second tube segment is connected to a lower end of the first tube segment, and the other end of the second tube segment is connected to an upper end of the third tube segment, the central axis of the first tube segment intersects the central axis of the second tube segment, and the central axis of the third tube segment intersects the central axis of the second tube segment.

[0012] In some embodiments, the cylinder has a draw hole extending from top to bottom, and the flow guide is arranged in the draw hole.

[0013] In some embodiments, the number of the draw holes is multiple, the multiple draw holes are distributed around the central axis of the cylinder, and at least one of the draw holes is arranged with at least one of the flow guides.

[0014] In some embodiments, the sum of the cross-sectional areas of the draw holes of the cylinder is S b , the sum of the cross-sectional areas of the flow channels of all the flow guides is S d , and S d <0.5S b .

[0015] Optionally, the first opening is one of a flat cut opening, an oblique cut opening, a V-shaped opening and a funnel-shaped opening.

[0016] Optionally, the second opening is one of a flat cut opening, an oblique cut opening and a V-shaped opening.

[0017] In some embodiments, the cylinder comprises an upper cylinder and a lower cylinder, the upper cylinder has the first upper end surface, and the lower cylinder is connected to a lower end of the upper cylinder, and the lower cylinder has the first lower end surface.

[0018] Compared with the prior art, the compressor provided in the embodiments of the present application has the beneficial effects that: by connecting the flow guide member to the cylinder and making the second upper end surface of the flow guide member higher than the first upper end surface of the cylinder, the part of the flow guide member that is higher than the first upper end surface can prevent the mixed liquid of the oil and the refrigerant from forming vortex in the space above the cylinder; meanwhile, by providing the flow guide passage with the first opening and the second opening on the flow guide member, the flow guide passage can form a fluid flow path that communicates the space above the cylinder and the lower space of the compressor, the oil in the space above the cylinder can flow to the lower space of the compressor through the flow guide passage, and such flow of the oil can break the pressure balance between the space above the cylinder and the lower space of the compressor, so that the oil located in the space above the cylinder can flow to the lower space of the compressor more quickly and the gas can flow to the space above the cylinder more easily, thereby the amount of the oil pushed to the exhaust port by the gas can be reduced; therefore, the compressor provided in the present application can reduce the oil discharge rate of the compressor, reduce the waste of the oil, improve the working efficiency of the compressor, increase the reliability of the compressor, reduce the risk of failure of the compressor, and prolong the service life of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a sectional view of the compressor provided in the first embodiment of the present application;

[0020] Figure 2 is a partial structure schematic view of the compressor provided in the first embodiment of the present application;

[0021] Figure 3 is an assembly schematic view of the cylinder and the flow guide member provided in the first embodiment of the present application;

[0022] Figure 4 is a schematic view of the height difference between the cylinder and the flow guide member provided in the first embodiment of the present application;

[0023] Figure 5 is a structure schematic view of the flow guide member provided in the first embodiment of the present application;

[0024] Figure 6 is a partial structure schematic view of the compressor provided in the second embodiment of the present application;

[0025] Figure 7 is a structure schematic view of the flow guide member provided in the second embodiment of the present application;

[0026] Figure 8 is a structure schematic view of the flow guide member provided in the third embodiment of the present application;

[0027] Figure 9 is a structure schematic view of the flow guide member provided in the fourth embodiment of the present application;

[0028] Figure 10 is a structural schematic view of a flow guide provided by the embodiment five of the present application;

[0029] Figure 11 is a structural schematic view of a flow guide provided by the embodiment six of the present application.

[0030] In the figure, 1, a housing; 11, a containing cavity; 12, an exhaust port; 13, an air inlet; 101, an upper oil pool; 102, a lower oil pool;

[0031] 2, a cylinder; 21, an upper cylinder; 22, a lower cylinder; 23, a draft hole; 211, a first upper end face; 221, a first lower end face;

[0032] 3, a flow guide; 31, a second upper end face; 32, a second lower end face; 33, a flow guide channel; 301, a first pipe segment; 302, a second pipe segment; 303, a third pipe segment; 304, a first transition pipe; 305, a second transition pipe; 311, a first opening; 321, a second opening;

[0033] 4, a crankshaft;

[0034] 5, an upper flange;

[0035] 6, a lower flange. DETAILED DESCRIPTION

[0036] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0037] In the description of the present application, it is understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0038] The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0039] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can through the indirect connection of intermediate medium, can be the intercommunication of two elements or the interaction of two elements.For the ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can through the indirect connection of intermediate medium, can be the intercommunication of two elements or the interaction of two elements.For the ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0041] Unless otherwise defined, all technical and scientific terms used in the present application are intended to have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the specification herein is for describing specific embodiments only and is not intended to be limiting upon the application; the terms "include" and "have" and any variations thereof used in the specification and claims of this application and the above description of the drawings are intended to cover the non-exclusive inclusion.

[0042] Reference in the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" or "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, or to a single alternative embodiment.

[0043] Embodiment one

[0044] As Figures 1-5 shown, the utility model embodiment one provides a kind of compressor, including shell 1, cylinder 2 and flow guide piece 3.

[0045] The shell 1 has a containing cavity 11, the shell 1 is equipped with the exhaust port 12 and the air inlet 13 communicated with the containing cavity 11, the air inlet 13 is located below the exhaust port 12; the cylinder 2 is arranged in the containing cavity 11, the cylinder 2 has the first upper end face 211 and the first lower end face 221, the exhaust port 12 is arranged above the first upper end face 211, and the air inlet 13 is located below the first upper end face 211; the flow guide piece 3 is arranged in the containing cavity 11 and connected to the cylinder 2, the flow guide piece 3 is internally provided with a flow guide channel 33, the flow guide piece 3 has the second upper end face 31 and the second lower end face 32, the second upper end face 31 is provided with the first opening 311 communicated with the flow guide channel 33, and the second lower end face 32 is provided with the second opening 321 communicated with the flow guide channel 33; the second upper end face 31 is higher than the first upper end face 211.

[0046] Based on the technical scheme, by connecting the flow guide piece 3 to the cylinder 2 and making the second upper end face 31 of the flow guide piece 3 higher than the first upper end face 211 of the cylinder 2, the part of the flow guide piece 3 higher than the first upper end face 211 can prevent the mixed liquid of the oil and the refrigerant from forming a vortex in the space above the cylinder 2; meanwhile, by arranging the flow guide channel 33 with the first opening 311 and the second opening 321 on the flow guide piece 3, the flow guide channel 33 can form a fluid flow path connecting the space above the cylinder 2 and the lower space of the compressor, the oil in the space above the cylinder 2 can flow to the lower space of the compressor through the flow guide channel 33, and such flow of the oil can break the pressure balance between the space above the cylinder 2 and the lower space of the compressor, so that the oil in the space above the cylinder 2 can flow to the lower space of the compressor more quickly and the gas can flow to the space above the cylinder 2 more easily, thereby reducing the amount of the oil pushed to the exhaust port 12 by the gas; therefore, the compressor provided by the utility model can reduce the oil discharge rate of the compressor, reduce the waste of the oil, improve the working efficiency of the compressor, increase the reliability of the compressor, reduce the risk of failure of the compressor, and prolong the service life of the compressor.

[0047] In the first embodiment, the flow guide piece 3 has a circular tube structure.

[0048] In other embodiments, the flow guide piece 3 can also have a square tube structure, a prism tube structure, a triangular tube structure, a bent tube structure, a special-shaped tube structure, etc.

[0049] In the first embodiment, the flow guide channel 33 has a vertical cylindrical structure.

[0050] In other embodiments, the flow guide channel 33 can also have an inclined cylindrical structure, a Y-shaped structure, a bifurcated structure, a curved structure, a cuboid structure, a prism structure, etc.

[0051] In the first embodiment, the first opening 311 of the flow guide 3 in the circular tube structure is a flat cut opening, and the second opening 321 of the flow guide 3 in the circular tube structure is also a flat cut opening.

[0052] The compressor further comprises a crankshaft 4, an upper flange 5, a lower flange 6, and a motor structure (not shown), the crankshaft 4 is arranged in the cylinder 2, the motor structure is fixedly connected to the crankshaft 4 and arranged in the shell 1, and the motor structure can drive the crankshaft 4 to rotate around its own central axis.

[0053] The cylinder 2 comprises an upper cylinder 21 and a lower cylinder 22, the upper cylinder 21 has a first upper end face 211, and the lower cylinder 22 is connected to the lower end of the upper cylinder 21 and has a first lower end face 221.

[0054] For the convenience of understanding, the space above the first upper end face 211 in the containing cavity 11 (i.e. the space above the cylinder 2) is referred to as an upper oil pool 101, and the space below the first lower end face 221 in the containing cavity 11 is referred to as a lower oil pool 102.

[0055] Preferably, the height difference between the second upper end face 31 and the first upper end face 211 is a, and 5mm≤a is satisfied. By limiting 5mm≤a, the flow guide 3 can better prevent the vortex of the mixed liquid of the refrigerant and the oil in the space above the cylinder 2, and the flow guide channel 33 can better guide the oil in the space above the cylinder 2 to flow to the lower space of the compressor, so that the oil discharge rate of the compressor can be further reduced, and the waste of the oil can be further reduced.

[0056] Preferably, the second lower end face 32 is located below the suction port 13.

[0057] Preferably, the suction port 13 is located above the first lower end face 221, and the second lower end face 32 is lower than the first lower end face 221. In this way, the oil in the upper oil pool 101 can be guided to flow to a lower position in the containing cavity 11 by the flow guide channel 33, which helps the oil to flow to the bottom of the containing cavity 11 more quickly, further reduces the possibility of the oil entering the exhaust port 12, so that the oil discharge rate of the compressor can be further reduced, and the waste of the oil can be further reduced.

[0058] Preferably, the height difference between the first lower end face 221 and the second lower end face 32 is b, and 5mm≤b is satisfied. By limiting 5mm≤b, the flow guide channel 33 can better guide the oil in the space above the cylinder 2 to flow to the lower space of the compressor, and the pressure balance between the space above the cylinder 2 and the lower space of the compressor can be more effectively destroyed, which helps to further reduce the oil discharge rate of the compressor and further reduce the waste of the oil.

[0059] Preferably, the number of flow guides 3 is multiple. The multiple flow guides 3 can change the flow state of the mixed liquid in the space above the cylinder 2 more quickly and thoroughly, and can guide the flow of the oil from the space above the cylinder 2 to the lower space of the compressor more quickly, which helps to further reduce the oil discharge rate, reduce the waste of oil, and improve the working efficiency of the compressor.

[0060] The height of the second upper end surface 31 of any two flow guides 3 can be the same or different, and the height of the second lower end surface of any two flow guides 3 can be the same or different.

[0061] The cylinder 2 has a draft hole 23 that penetrates from top to bottom, and the flow guide 3 is arranged in the draft hole 23. This arrangement greatly simplifies the installation process of the flow guide 3. Compared with designing a complex installation structure for the flow guide 3 alone, the existing draft hole 23 of the cylinder 2 is used for installation, reducing additional processing procedures and parts. The worker only needs to pass the flow guide 3 through the draft hole 23 to complete the installation and positioning, without the need for complicated alignment and fixing operations. This not only saves installation time and reduces the space occupied by the flow guide 3 in the accommodation cavity 11, but also reduces the assembly error that may be caused by complex installation, improves the overall production efficiency, and is conducive to mass production and reduces production costs. At the same time, by arranging the flow guide 3 in the draft hole 23, the flow guide 3 can break the liquid seal of the mixed liquid in the space above the cylinder 2 to the draft hole 23, so that the oil in the space above the cylinder 2 can also flow to the lower space of the compressor through the draft hole 23, which helps to further reduce the oil discharge rate of the compressor, further reduce the waste of oil, and further improve the working efficiency of the compressor.

[0062] The number of draft holes 23 is multiple, and the multiple draft holes 23 are distributed around the center axis of the cylinder 2. At least one draft hole 23 is arranged with at least one flow guide 3.

[0063] It should be noted that at least one draft hole 23 is arranged with at least one flow guide 3, which means that at least one of the multiple draft holes 23 is arranged with any number (the number is greater than or equal to one) of flow guides 3, and the remaining draft holes 23 in the multiple draft holes 23 can be arranged with flow guides 3 or without flow guides 3.

[0064] The shape and size of any two draft holes 23 can be the same or different.

[0065] The number of flow guides 3 arranged in any two draft holes 23 can be the same or different.

[0066] In practical applications, the compressor can face various operation scenarios and operation conditions; the multiple draw holes 23 are arranged so that the compressor can flexibly adjust the oil guiding effect according to the needs of the operation scenarios and operation conditions; that is, the guiding member 3 can be arranged in the draw holes 23 at different positions and / or the number of the guiding member 3 arranged in the draw holes 23 can be changed to meet the needs of various operation scenarios and operation conditions.

[0067] The sum of the cross-sectional areas of all the draw holes 23 of the cylinder 2 is S b The sum of the cross-sectional areas of all the guiding channels 33 of all the guiding members 3 is S d S d <0.5S b In this way, the mixed fluid can avoid liquid sealing the draw holes 23 and the guiding channels 33 of the guiding member 3; during the operation of the compressor, the mixed liquid of the oil and the refrigerant is easy to accumulate in a specific area, and if the cross-sectional area of the guiding channel of the guiding member 3 is too large and occupies too much space of the draw hole 23, the mixed liquid is easy to liquid seal and block the draw hole 23 and the guiding channel 33 of the guiding member 3, thereby hindering the oil flowing from the upper oil pool 101 to the lower oil pool 102 through the draw hole 23 and the guiding channel 33 of the guiding member 3; by reasonably controlling the ratio of S d and S b , the mixed liquid can avoid liquid sealing the draw hole 23 and the guiding channel 33, so that the oil can flow from the upper oil pool 101 to the lower oil pool 102 through the draw hole 23 and the guiding channel 33 of the guiding member 3 under the action of gravity, ensuring the smoothness of the oil guiding path, providing sufficient oil flow for breaking the pressure balance between the upper space of the cylinder 2 and the lower space of the compressor, and helping to further reduce the oil discharge rate.

[0068] It can be understood that when the cross section of a single guiding channel 33 is in a circular structure, the radius of the cross section of the single guiding channel 33 can be measured by using any length measuring tool such as a ruler or a tape measure, and then the cross-sectional area S of the single guiding channel 33 can be obtained by using the area calculation formula of a circle (the area of a circle = π * radius * radius).

[0069] When the cross section of a single guiding channel 33 is in a square structure, the length and the width of the single guiding channel 33 can be measured by using any length measuring tool such as a ruler or a tape measure, and then the cross-sectional area of the single guiding channel 33 can be calculated by using the area calculation formula of a square (the area of a square = length * width).

[0070] Similarly, when the cross section of a single guiding channel 33 is in any shape, the cross-sectional area of the single guiding channel can be calculated by using the area calculation formula corresponding to the specific shape of the single guiding channel 33.

[0071] The cross-sectional shape of any two flow guide channels 33 can be the same or different, and the cross-sectional area of any two flow guide channels 33 can be the same or different.

[0072] Optionally, one or more flow guide members 3 can be arranged in the accommodation cavity 11, and each flow guide member 3 can have one or more flow guide channels 33.

[0073] If N flow guide members 3 are arranged in the accommodation cavity 11, and each flow guide member 3 has several flow guide channels 33, the following illustrates how to obtain the sum S of the cross-sectional areas of all flow guide channels 33 of the N flow guide members 3. d Specifically, in the N flow guide members, the first flow guide member 3 has J flow guide channels 33, the cross-sectional area of the first flow guide channel 33 of the first flow guide member 3 is S N1J1 , the cross-sectional area of the second flow guide channel 33 of the first flow guide member 3 is S N1J2 , the cross-sectional area of the third flow guide channel 33 of the first flow guide member 3 is S N1J3 , and so on, the cross-sectional area of the Jth flow guide channel 33 of the first flow guide member 3 is S N1JJ ; the second flow guide member 3 has K flow guide channels 33, the cross-sectional area of the first flow guide channel 33 of the second flow guide member 3 is S N2K1 , the cross-sectional area of the second flow guide channel 33 of the second flow guide member 3 is S N2K2 , the cross-sectional area of the third flow guide channel 33 of the second flow guide member 3 is S N2K3 , and so on, the cross-sectional area of the Kth flow guide channel 33 of the second flow guide member 3 is S N2KK ; the third flow guide member 3 has L flow guide channels 33, the cross-sectional area of the first flow guide channel 33 of the third flow guide member 3 is S N3L1 , the cross-sectional area of the second flow guide channel 33 of the third flow guide member 3 is S N3L2 , the cross-sectional area of the third flow guide channel 33 of the third flow guide member 3 is S N3L3 , and so on, the cross-sectional area of the Lth flow guide channel 33 of the third flow guide member 3 is S N2LL ; and so on, the Nth flow guide member 3 has M flow guide channels 33, the cross-sectional area of the first flow guide channel 33 of the Nth flow guide member 3 is S NNM1 , the cross-sectional area of the second flow guide channel 33 of the Nth flow guide member 3 is S NNM2 , the cross-sectional area of the second flow guide channel 33 of the Nth flow guide member 3 is S NNM3 , and so on, the cross-sectional area of the Mth flow guide channel 33 of the Nth flow guide member 3 is S NNMM ; and so on, the N flow guide members 3, all flow guide channels 33 of all flow guide members 3 (i.e. N flow guide members 3) have a sum S d=∑S N1J1 +S N1J2 +S N1J3 +......S N1JJ +S N2K1 +S N2K2 +S N2K3 +......S N2KK +S N3L1 +S N3L2 +S N3L3 +......S N3LL +......S NNM1 +S NNM2 +S NNM3 +......S NNMM .

[0074] Similarly, the cross-sectional area of a single draft hole 23 can be calculated by an area calculation formula corresponding to the specific shape of the single draft hole 23, and the cross-sectional area of all the draft holes 23 of the cylinder 2 can be obtained by adding the cross-sectional areas of all the draft holes 23.

[0075] Under the condition of keeping other conditions unchanged, the upper oil pool 101 has 2L oil, the flow guide member 3 is the flow guide member 3 provided in the first embodiment, the diameter of the flow guide member 3 is 13mm, the wall thickness is 1mm, the cross-sectional area S of the flow channel 33 of the single flow guide member 3 is (13-1*2) 2 / 4=95mm 2 The second upper end surface 31 of the flow guide member 3 is higher than the first upper end surface 211 of the cylinder 2, and a<5mm, the second lower end surface 32 is located in the draft hole 23, that is, the second lower end surface 32 is higher than the first lower end surface 221, only the number of the flow guide members 3 penetrating the draft hole 23 and connected to the cylinder 2 is changed, and the time for the 2L oil provided in the test example of the utility model to flow from the upper oil pool 101 to the lower oil pool 102 is shown in Table 1 as follows:

[0076] The method for testing the time for the oil to flow from the upper oil pool 101 to the lower oil pool 102 is that a capacitance sensor is installed on the upper oil pool 101 and the lower oil pool 102 respectively, because the dielectric constant of the oil is different from that of air and other media, when the oil flows from the upper oil pool 101 to the lower oil pool 102, the capacitance value of the capacitance sensor will change, by monitoring the change of the capacitance value, the time when the capacitance value begins to change obviously is taken as the time when the oil begins to flow, the time when the capacitance value tends to be stable is taken as the time when the oil reaches the lower space, and the time difference between the two times is the flow time of the oil.

[0077]

[0078] Table 1

[0079] From Table 1, it can be seen that by arranging the flow guide 3 in the accommodating cavity 11, the time for the oil to flow from the upper oil pool 101 to the lower oil pool 102 can be reduced, that is, by arranging the flow guide 3 in the accommodating cavity 11, the oil in the space above the cylinder 2 can flow to the lower space of the compressor more quickly.

[0080] In the case of keeping other conditions unchanged, the upper oil pool 101 has 2L of oil, the flow guide 3 is the flow guide 3 provided in the first embodiment and has a vertical circular tube structure, the diameter of the flow guide 3 is 13mm, the wall thickness is 1mm, the cross-sectional area S of the flow guide channel 33 of a single flow guide 3 is = (13-1*2) 2 / 4=95mm 2 ; the second upper end surface 31 is higher than the first upper end surface 211 of the cylinder 2, and a≥5mm, the second lower end surface 32 is lower than the first lower end surface 221, and b≥5mm; only the number of the flow guides 3 arranged in the draft hole 23 and connected to the cylinder 2 is changed, and the time for 2L of oil provided in the test example of the utility model to flow from the upper oil pool 101 to the lower oil pool 102 is shown in Table 2 as follows:

[0081]

[0082] Table 2

[0083] From the comparison between the test example 2 and the test example 4 in Table 1 and Table 2, it can be seen that when the accommodating cavity 11 is arranged with only one flow guide 3, and the height difference a and b between the flow guide 3 and the cylinder 2 are both greater than or equal to 5mm, compared with the height difference a<5mm between the flow guide 3 and the cylinder 2, the time for the oil to flow from the upper oil pool 101 to the lower oil pool 102 is significantly reduced; from the comparison between the test example 3 and the test example 8 in Table 2, it can be seen that with the increase of the number of the flow guides 3 arranged in the draft hole 23 and connected to the cylinder 2, the time for the oil to flow from the upper oil pool 101 to the lower oil pool 102 is reduced.

[0084] In the case of keeping other conditions unchanged, the upper oil pool 101 has 1L of oil, the flow guide 3 is the flow guide provided in the embodiment and has a circular tube structure, the second upper end surface 31 is higher than the first upper end surface 211 of the cylinder 2, and a≥5mm, the second lower end surface 32 is lower than the first lower end surface 221, and b≥5mm; only the number of the flow guides 3 in the accommodating cavity 11 is changed, and the flow guides 3 are arranged in the draft hole 23 and connected to the cylinder 2, and the time for 1L of oil provided in the test example of the utility model to flow from the upper oil pool 101 to the lower oil pool 102 is shown in Table 2 as follows:

[0085]

[0086]

[0087] Table 3

[0088] As can be seen from the comparison between the test example 9 and the test example 14 of Table 3, as the number of the flow guides 3 provided in the draft hole 23 and connected to the cylinder 2 increases, the time for the oil to flow from the upper oil pool 101 to the lower oil pool 102 decreases.

[0089] Embodiment Two

[0090] Referring to Figures 6-7 Different from the embodiment one, the flow guide 3 provided in the embodiment two includes a first pipe segment 301, a second pipe segment 302 and a third pipe segment 303, the first pipe segment 301 has the second upper end face 31, the third pipe segment 303 has the second lower end face 32, one end of the second pipe segment 302 is connected to the lower end of the first pipe segment 301, the other end of the second pipe segment 302 is connected to the upper end of the third pipe segment 303, the central axis of the first pipe segment 301 intersects with the central axis of the second pipe segment 302, and the central axis of the third pipe segment 303 intersects with the central axis of the second pipe segment 302. In this way, the first pipe segment 301 can be closer to the upper flange 5.

[0091] In the embodiment two, the first pipe segment 301, the second pipe segment 302 and the third pipe segment 303 all have a circular pipe structure.

[0092] In the embodiment two, the flow guide 3 further includes a first transition pipe 304 and a second transition pipe 305, the second pipe segment 302 is connected to the first pipe segment 301 through the first transition pipe 304, and the second pipe segment 302 is connected to the third pipe segment 303 through the second transition pipe 305.

[0093] In the embodiment two, the first transition pipe 304 is a first arc-shaped transition pipe, and the second transition pipe 305 is a second arc-shaped transition pipe.

[0094] Embodiment Three

[0095] Referring to Figure 8 Different from the embodiment one, the first opening 311 of the flow guide 3 provided in the embodiment three is a bevel cut opening.

[0096] Embodiment Four

[0097] Referring to Figure 9 Different from the embodiment one, the first opening 311 of the flow guide 3 provided in the embodiment four is a bevel cut opening, and the second opening 321 is a bevel cut opening.

[0098] Embodiment Five

[0099] Referring to Figure 10 Different from the embodiment one, the first opening 311 of the flow guide 3 provided in the embodiment five is a V-shaped opening, and the second opening 321 is a V-shaped opening.

[0100] Embodiment six

[0101] Referring to Figure 11 Different from the embodiment one, the first opening 311 of the flow guide 3 provided by the embodiment six is a funnel-shaped opening.

[0102] In other embodiments, the first opening 311 and the second opening 321 can also be W-shaped openings, wave-shaped openings, or any other shape of openings, which are not limited herein.

[0103] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, and these improvements and substitutions should also be considered as the protection scope of the present application.

Claims

1. A compressor characterized by, The application relates to a shell (1) with a containing cavity (11), the shell (1) being provided with an exhaust port (12) and an air inlet port (13) which are in communication with the containing cavity (11), the air inlet port (13) being located below the exhaust port (12); a cylinder (2) provided in the containing cavity (11), the cylinder (2) having a first upper end face (211) and a first lower end face (221), the exhaust port (12) being located above the first upper end face (211), and the air inlet port (13) being located below the first upper end face (211); and a flow guide (3) provided in the containing cavity (11) and connected to the cylinder (2), the flow guide (3) having a flow guide channel (33) in the interior, a second upper end face (31) and a second lower end face (32), the second upper end face (31) being provided with a first opening (311) in communication with the flow guide channel (33), and the second lower end face (32) being provided with a second opening (321) in communication with the flow guide channel (33), the second upper end face (31) being higher than the first upper end face (211). The height difference between the second upper end face (31) and the first upper end face (211) is a, and 5mm<=a. The air inlet port (13) is located above the first lower end face (221), and the second lower end face (32) is lower than the first lower end face (221). The height difference between the first lower end face (221) and the second lower end face (32) is b, and 5mm<=b.

2. The compressor of claim 1, wherein, The number of the flow guides (3) is multiple.

3. The compressor of claim 1, wherein, The flow guide (3) is in a circular tube structure.

4. The compressor of claim 3, wherein, The flow guide (3) comprises a first tube segment (301), a second tube segment (302) and a third tube segment (303), the first tube segment (301) has the second upper end face (31), the third tube segment (303) has the second lower end face (32), one end of the second tube segment (302) is connected to the lower end of the first tube segment (301), the other end of the second tube segment (302) is connected to the upper end of the third tube segment (303), the central axis of the first tube segment (301) intersects the central axis of the second tube segment (302), and the central axis of the third tube segment (303) intersects the central axis of the second tube segment (302).

5. The compressor of claim 1, wherein, The cylinder (2) has a draw hole (23) penetrating from top to bottom, and the flow guide (3) is arranged in the draw hole (23).

6. The compressor of claim 1, wherein, The number of the draw holes (23) is multiple, the multiple draw holes (23) are distributed around the central axis of the cylinder (2), and at least one of the draw holes (23) is provided with at least one of the flow guides (3).

7. The compressor of claim 1, wherein The first opening (311) is one of a flat cutting opening, an oblique cutting opening, a V-shaped opening and a funnel-shaped opening.

8. The compressor of any one of claims 1-7, wherein, And / or, the second opening (321) is one of a flat cutting opening, an oblique cutting opening and a V-shaped opening.

9. The compressor of claim 8, wherein, ​ 10. The compressor of claim 9, wherein, The sum of the cross-sectional areas of all the pull-out holes (23) of the cylinder (2) is S b The sum of the cross-sectional areas of all the flow guide channels (33) of all the flow guides (3) is S d S d <0.5S b .

11. The compressor of claim 1, wherein, ​ ​

Images