CN107100842B - Compression mechanism of compressor and compressor with same - Google Patents
Compression mechanism of compressor and compressor with same Download PDFInfo
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- CN107100842B CN107100842B CN201710527051.3A CN201710527051A CN107100842B CN 107100842 B CN107100842 B CN 107100842B CN 201710527051 A CN201710527051 A CN 201710527051A CN 107100842 B CN107100842 B CN 107100842B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
- F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a compression mechanism of a compressor and the compressor with the same, wherein the compression mechanism comprises: the air cylinder is internally provided with a slide sheet groove and an air cylinder cavity; the bearing is arranged on the end face of the cylinder, the bearing is provided with an exhaust hole, and the inlet end of the exhaust hole is communicated with the cylinder cavity; the piston is eccentrically and rotatably arranged in the cylinder; the sliding sheet is arranged in the sliding sheet groove in a reciprocating motion manner, and the inner end of the sliding sheet is stopped against the outer peripheral wall of the piston; the flow guide notch is only positioned in the setting column body, and the projection of the column body on the end surface is in a setting sector shape. According to the compression mechanism of the compressor provided by the embodiment of the invention, the guide cut is arranged on the inner periphery of the inlet end of the exhaust hole, the guide cut is simple in structure and easy to process, the exhaust vortex loss at the inlet of the exhaust hole can be reduced, the airflow velocity gradient on the section of the outlet of the exhaust hole is reduced, the exhaust flow velocity of the exhaust hole can be reduced, the inlet force of the compressor is improved, and the energy efficiency of the compressor can be improved.
Description
Technical Field
The invention relates to the field of compressors, in particular to a compression mechanism of a compressor and the compressor with the compression mechanism.
Background
In a hermetic compressor, a refrigerant is compressed in a cylinder chamber of the compressor, and when a refrigerant gas is compressed to a predetermined pressure in the cylinder chamber, an exhaust valve is opened, and the refrigerant gas is discharged out of the cylinder chamber through an exhaust hole.
The exhaust port is usually designed as a section of regular revolution surface, and a chamfer deburring is provided at a position close to the cylinder end surface. When high-pressure refrigerant gas is discharged from the cylinder cavity, the cross section area of a flow channel is suddenly reduced when the refrigerant gas enters the exhaust hole, the inertia of the air flow can enable the outlet of the exhaust hole to form a larger vortex area, the air flow speed on the cross section of the outlet of the exhaust hole can form a larger speed gradient, the smoothness of the exhaust is hindered, the air inlet force of the compressor is increased, and the energy efficiency of the compressor is greatly reduced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a compression mechanism of a compressor, which has the advantages of simple structure, reduction of the flow speed of exhaust gas and improvement of the energy efficiency of the compressor.
The invention also provides a compressor provided with the compression mechanism.
A compression mechanism of a compressor according to some embodiments of the present invention includes: the air cylinder is internally provided with a slide sheet groove and an air cylinder cavity; the bearing is arranged on the end face of the cylinder, the bearing is provided with an exhaust hole, and the inlet end of the exhaust hole is communicated with the cylinder cavity; the piston is eccentrically and rotatably arranged in the cylinder; the sliding piece can be arranged in the sliding piece groove in a reciprocating mode, and the inner end of the sliding piece is abutted against the outer peripheral wall of the piston; wherein, the inner circumference of the inlet end of the exhaust hole is provided with a flow guide notch which is only positioned in the setting column body, and the projection of the diversion cut on the end surface is positioned in the projection of the cylinder cavity on the end surface, wherein a part of the exhaust hole is covered by the cylinder and the slide sheet, and the intersection point of the two intersection points of the projection of the exhaust hole and the cylinder cavity on the end surface and far away from the slide sheet is a first intersection point, the intersection point of two intersection points of the exhaust hole and the slide sheet projected on the end surface and adjacent to the center of the cylinder cavity is a second intersection point, the projection of the cylinder on the end face is in a set fan shape, the set fan shape takes the center of the exhaust hole as a fan-shaped circle center, and two sides of the set fan shape are formed by rays from the fan-shaped circle center to the first intersection point and the second intersection point respectively.
According to the compression mechanism of the compressor provided by the embodiment of the invention, the guide cut is arranged on the inner periphery of the inlet end of the exhaust hole, the guide cut is simple in structure and easy to process, the exhaust vortex loss at the inlet of the exhaust hole can be reduced, the airflow velocity gradient on the section of the outlet of the exhaust hole is reduced, the exhaust flow velocity of the exhaust hole can be reduced, the inlet force of the compressor is improved, and the energy efficiency of the compressor can be improved.
According to some embodiments of the invention, the setting sector has a center line of symmetry, the setting cylinder has a center plane of symmetry passing through the center line of symmetry and through the axis of the exhaust hole, and the guide slits are symmetrically arranged with respect to the center plane of symmetry.
According to some embodiments of the invention, the guide notch is formed by intersecting the bearing and a notch rotator, and an axis of the notch rotator is parallel to or coincides with an axis of the exhaust hole.
Specifically, the radius of the exhaust hole is R, and the maximum radius R0 of the notch revolving body forming the diversion notch part is not more than 1.5 multiplied by R.
Furthermore, an included angle between a generatrix of the notch revolving body and an axis of the notch revolving body is α, a distance between the axis of the notch revolving body and the axis of the exhaust hole is delta, delta is larger than or equal to 0, the total height of the exhaust hole valve seat is H, and the depth H of the diversion notch satisfies the relation that H is (R0+ delta-R) x cot α and H is smaller than or equal to 0.8 x H.
According to some embodiments of the present invention, an inner circumferential surface of the guide slit is formed as a stepped surface.
A compression mechanism of a compressor according to other embodiments of the present invention includes: the air cylinder comprises a plurality of air cylinders, a slide sheet groove and an air cylinder cavity are defined in each air cylinder, a piston capable of eccentrically rotating is arranged in each air cylinder, and a slide sheet capable of reciprocating is arranged in each slide sheet groove; the partition plate is arranged between two adjacent cylinders, the partition plate is provided with an exhaust hole, and the inlet end of the exhaust hole is communicated with the corresponding cylinder cavity; wherein, the inner circumference of the inlet end of the exhaust hole is provided with a flow guide notch which is only positioned in the setting column body, and the projection of the diversion cut on the end surface of the cylinder is positioned in the projection of the cylinder cavity on the end surface, wherein a part of the exhaust hole is covered by the corresponding cylinder and the sliding vane, and the intersection point of the two intersection points of the projection of the exhaust hole and the cylinder cavity on the end surface, which is far away from the sliding vane, is a first intersection point, the intersection point of two intersection points of the exhaust hole and the slide sheet projected on the end surface and adjacent to the center of the cylinder cavity is a second intersection point, the projection of the cylinder on the end face is in a set fan shape, the set fan shape takes the center of the exhaust hole as a fan-shaped circle center, and two sides of the set fan shape are formed by rays from the fan-shaped circle center to the first intersection point and the second intersection point respectively.
According to the compression mechanism of the compressor of other embodiments of the invention, the guide notch is arranged on the partition plate between two adjacent cylinders, the guide notch has a simple structure and is easy to process, the exhaust vortex loss at the inlet of the exhaust hole can be reduced, the airflow velocity gradient on the section of the outlet of the exhaust hole is reduced, the exhaust flow velocity of the exhaust hole can be reduced, the inlet force of the compressor is improved, and the energy efficiency of the compressor can be improved.
In some implementations of the invention, the setting sector has a center line of symmetry, the setting cylinder has a center plane of symmetry passing through the center line of symmetry and through an axis of the exhaust hole, and the guide slits are symmetrically disposed with respect to the center plane of symmetry.
In some embodiments of the invention, the diversion notch is formed by intersecting the partition plate and a notch revolving body, and an axis of the notch revolving body is parallel to or coincides with an axis of the exhaust hole.
In some embodiments of the present invention, the radius of the exhaust hole is R, and the maximum radius R0 of the notch revolution body forming the guide notch part is less than or equal to 1.5 multiplied by R.
Furthermore, an included angle between a generatrix of the notch revolving body and an axis of the notch revolving body is α, a distance between the axis of the notch revolving body and the axis of the exhaust hole is delta, delta is larger than or equal to 0, the total height of the exhaust hole valve seat is H, and the depth H of the diversion notch satisfies the relation that H is (R0+ delta-R) x cot α and H is smaller than or equal to 0.8 x H.
The compressor according to the embodiment of the present invention includes the compression mechanism of the compressor according to the above-described embodiment of the present invention.
According to the compressor provided by the embodiment of the invention, by arranging the compression mechanism, the compression mechanism can be provided with the guide notch on the bearing and/or the partition plate between two adjacent cylinders, the guide notch is simple in structure and easy to process, the exhaust vortex loss at the inlet of the exhaust hole can be reduced, the airflow velocity gradient on the section of the outlet of the exhaust hole is reduced, the exhaust flow velocity of the exhaust hole can be reduced, the input force of the compressor is improved, and the energy efficiency of the compressor can be improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a top view of a compression mechanism according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of a portion A shown in FIG. 1;
FIG. 3 is a schematic view of the overall structure of a bearing according to an embodiment of the invention;
FIG. 4 is a schematic view of the overall structure of a bearing according to an embodiment of the present invention, wherein a flow guiding notch is formed on the bearing;
FIG. 5 is a top view of a compression mechanism according to one embodiment of the present invention;
FIG. 6 is a top view of a compression mechanism according to another embodiment of the present invention;
FIG. 7 is a top view of a compression mechanism according to yet another embodiment of the present invention;
FIG. 8 is a partial cross-sectional view of a compression mechanism according to one embodiment of the present invention;
FIG. 9 is a partial cross-sectional view of a compression mechanism according to another embodiment of the present invention;
FIG. 10 is a partial cross-sectional view of a compression mechanism according to yet another embodiment of the invention;
fig. 11 is a partial sectional view of a compression mechanism according to still another embodiment of the present invention.
Reference numerals:
the compression mechanism (100) is provided with a compression mechanism,
bearing 20, exhaust hole 210, exhaust hole axis 210a, guide notch 220, first intersection point 220a, second intersection point 220b, notch revolving body axis 220c, set sector 230, first ray 230a, second ray 230b, symmetrical center line 230c, exhaust valve 240, valve seat 250,
the piston (30) is provided with a piston,
a slide 40.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "inside", "outside", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
A compression mechanism 100 of a compressor according to an embodiment of the present invention will be described with reference to fig. 1 to 11, and the compression mechanism 100 can be applied to both a single cylinder compressor and a multi-cylinder compressor.
As shown in fig. 1 to 4, a compression mechanism 100 of a compressor according to an embodiment of the present invention includes: cylinder 10, bearing 20, piston 30 and slide 40. Wherein, a slide sheet groove 110 and a cylinder cavity 120 are defined in the cylinder 10, the cylinder cavity 120 is formed into a cylindrical cavity, the slide sheet groove 110 is formed into a radial cutting groove on the peripheral wall of the cylinder cavity 120, and the slide sheet groove 110 is communicated with the cylinder cavity 120.
As shown in fig. 1, the piston 30 is eccentrically and rotatably provided in the cylinder 10, and the piston 30 can roll along the inner wall of the cylinder chamber 120. The slide 40 is reciprocatingly disposed in the slide groove 110, and an inner end of the slide 40 abuts against an outer circumferential wall of the piston 30. The space between the inner peripheral wall of the cylinder chamber 120 and the outer peripheral wall of the piston 30 is divided into two chambers by the sliding piece 40, wherein one chamber is a high pressure chamber for completing compression and exhaust work, and the other chamber is a low pressure chamber for completing suction.
As shown in fig. 3-4, the bearing 20 is disposed on the end surface of the cylinder 10, the bearing 20 is provided with a vent hole 210, and the inlet end of the vent hole 210 communicates with the cylinder chamber 120.
Specifically, a valve seat 250 is provided on the bearing 20, the exhaust hole 210 is provided on the valve seat 250, and an exhaust valve 240 is provided at an upper end of the exhaust hole 210. The discharge valve 240 is closed in a normal state, and when the refrigerant gas in the cylinder chamber 120 is compressed to a preset pressure, the discharge valve 240 is opened and the refrigerant gas is discharged out of the cylinder chamber 120 from the discharge hole 210.
As shown in fig. 1-2 and 4, a portion of the discharge hole 210 is covered by the cylinder 10 and the sliding vane 40, and a guide slit 220 is formed on an inner circumference of an inlet end of the discharge hole 210, and the guide slit 220 has a function of guiding discharge of gas when refrigerant gas is discharged out of the cylinder chamber 120, so that an inlet force of the compressor can be improved. Wherein the diversion cuts 220 are only located in the setting column (not shown in the figure), and the projection of the diversion cuts 220 on the end surface is located in the projection of the cylinder cavity 120 on the end surface.
It should be noted here that the "setting cylinder" mentioned herein is not an actual object on the bearing 20, but an imaginary region introduced for describing the position of the guide slit 220, and the shape of the region is a columnar shape, and the shape of the region on the end surface of the cylinder 10 is a setting sector 230 mentioned below.
The guide slits 220 are located in the setting cylinder, meaning that the guide slits 220 are formed in the bearing 20 at a position not exceeding the imaginary area. The projection of the diversion cut-out 220 on the end surface is located in the projection of the cylinder cavity 120 on the end surface, which means that the size of the diversion cut-out 220 does not exceed the range of the cylinder cavity 120.
For clarity of describing the shape of the "set cylinder", the concept of "set fan" 230 is introduced below, and the set fan 230 is also an imaginary shape introduced for describing the location of the guide slits 220.
Specifically, as shown in fig. 1-2, a part of the exhaust hole 210 is covered by the cylinder 10 and the sliding vane 40, a first intersection point 220a is a first intersection point of two intersection points of the projection of the exhaust hole 210 and the cylinder cavity 120 on the end surface, a second intersection point 220b is a second intersection point of two intersection points of the projection of the exhaust hole 210 and the sliding vane 40 on the end surface, and the fan shape 230 is set with the center of the exhaust hole 210 as a center of the fan shape, and two sides of the set fan shape 230 are formed by rays from the center of the fan shape to the first intersection point 220a and the second intersection point 220b respectively.
Specifically, two sides of the fan-shaped portion 230 are defined by a first ray 230a and a second ray 230b, a line connecting the center of the exhaust hole 210 and the first intersection point 220a forms the first ray 230a, a line connecting the center of the exhaust hole 210 and the second intersection point 220b forms the second ray 230b, and an included angle between the first ray 230a and the second ray 230b is θ.
It should be noted that, as shown in fig. 1, 5-7, the projection of the diversion notch 220 on the cylinder end surface must be within the limited range of the set sector 230, and if the projection exceeds the limited range of the set sector 230, the diversion notch 220 will increase the clearance volume of the exhaust hole 210, which will affect the sealing of the end surface of the sliding vane 40, reduce the cooling capacity of the refrigerant gas, and is not good for improving the input force of the compressor.
According to the compression mechanism 100 of the compressor of the embodiment of the present invention, by providing the guide slits 220 on the inner circumference of the inlet end of the discharge hole 210, the guide slits 220 have a simple structure and are easy to process, the discharge swirl loss at the inlet of the discharge hole 210 can be reduced, the airflow velocity gradient at the outlet section of the discharge hole 210 can be reduced, the discharge flow velocity of the discharge hole 210 can be reduced, the inlet force of the compressor can be improved, and thus the energy efficiency of the compressor can be improved.
As shown in fig. 1-2, according to some embodiments of the present invention, the setting fan 230 has a center line of symmetry 230c, the setting cylinder has a center plane of symmetry (not shown) passing through the center line of symmetry 230c and passing through the axis 210a (shown in fig. 8) of the exhaust hole, and the guide slits 220 are symmetrically disposed with respect to the center plane of symmetry. It will be appreciated that the center line of symmetry 230c divides the given sector 230 equally into two portions, i.e., the center line of symmetry 230c is at an angle θ/2 to both the first and second rays 230a and 230b, and the pod 220 is spatially symmetric about the center plane of symmetry. The diversion cuts 220 are arranged to be symmetrical about the symmetrical center plane, so that the difficulty of the machining process of the diversion cuts 220 can be reduced, batch machining of the diversion cuts 220 can be realized, and the production efficiency is greatly improved.
As shown in fig. 8 to 11, according to some embodiments of the present invention, the guide slits 220 are formed by intersecting the bearing 20 with a slit rotator (not shown), that is, the inner peripheral wall of the guide slits 220 is formed as a part of a revolution surface. Here, the notch rotation body is not a real object on the bearing 20, but an imaginary body introduced for describing the shape of the diversion notch 220.
As shown in fig. 8 to 11, the axis 220c of the notch rotator is parallel to or coincident with the axis 210a of the exhaust hole, so that the machining process of the guide notch 220 can be simplified. It is understood that, when the diversion cuts 220 are processed, the axis 220c of the cut-off rotator and the axis 210a of the exhaust hole may be coincident or parallel to each other with a certain offset distance, as long as the projection of the diversion cut 220 formed by the cut-off rotator on the end surface is ensured to fall within the limited range of the set fan shape 230.
As shown in fig. 8-11, in some embodiments of the present invention, the maximum radius of the portion of the exhaust hole 210 where the diversion slit is formed is R, and the radius R0 of the notched rotator is not more than 1.5 × R, according to multiple tests and simulation verification of the inventor, when the projection of the diversion slit 220 on the end surface falls within the range defined by the set sector 230 and the maximum radius R0 of the notched rotator is not more than 1.5 × R, the diversion effect of the diversion slit 220 is the best, and the energy efficiency of the compressor can be improved to the maximum extent further, the included angle between the generatrix (not shown in the drawing) of the slit and the axis 220c of the notched rotator is α, the offset distance between the axis 220c of the notched rotator and the axis 210a of the exhaust hole is δ, where δ is not less than 0, and the total height H of the valve seat 250 is H, the depth H of the diversion slit 220 satisfies the relationship of H ═ (R0+ δ -R) × cot α, and H ≦ 0.8 × H, it can be understood that the depth H of the diversion slit 220 is too large to cause the strength of the valve seat 250 to be greatly reduced, and the notch can easily meet the requirements of the cold flow guiding mechanism, and the maximum sealing strength of the compressor can be easily tested when the notch of the compressor can be improved by multiple times R465H, and the sealing strength of the slit of the compressor can be improved by the notch mechanism, and the maximum sealing of the notch 220.
As shown in fig. 10 to 11, according to some embodiments of the present invention, the inner circumferential surface of the guide slit 220 is formed as a stepped surface, so that the guide slit 220 may reduce the air flow velocity at the discharge hole 210, improving the inlet force of the compressor. Alternatively, as shown in fig. 8 to 11, the inner circumferential surface of the guide slit 220 may be a conical surface or a stepped surface, and the shape of the inner circumferential surface of the guide slit 220 is comprehensively selected according to the position of the guide slit 220 and the diameter of the exhaust hole 210.
The above embodiments describe either single cylinder or multi-cylinder compression mechanisms, and when the bearing is provided with a vent, the inlet end of the vent may be provided with a flow directing notch. It should be noted that, when the compression mechanism is a multi-cylinder compression mechanism, some of the partition plates of the compression mechanism may also be provided with an exhaust hole, and at this time, the inlet end of the exhaust hole may also be provided with a flow guide notch, and the position and shape of the flow guide notch may be the same as those of the flow guide notch described above.
Specifically, a compression mechanism of a compressor according to other embodiments of the present invention includes: a plurality of cylinders and a partition. Wherein, a sliding sheet groove and a cylinder cavity are defined in each cylinder, a piston capable of eccentrically rotating is arranged in each cylinder, and a sliding sheet capable of reciprocating is arranged in each sliding sheet groove, thereby improving the working efficiency of the compressor. When the compressor compresses refrigerant gas, the cylinders can work simultaneously, and the crankshaft drives the piston to rotate eccentrically so as to compress the refrigerant gas in the cylinders.
The partition plate is arranged between two adjacent cylinders, the partition plate is provided with an exhaust hole, and the inlet end of the exhaust hole is communicated with the cylinder cavity, so that refrigerant gas can be exhausted out of the cylinders. When the compression mechanism works, the piston compresses the refrigerant gas in the cylinder cavity, when the pressure of the refrigerant gas reaches a preset value, the exhaust hole is opened, and the refrigerant gas is exhausted out of the cylinder cavity through the exhaust hole.
The inner circumference of the inlet end of the exhaust hole is provided with a flow guide notch, and when refrigerant gas is exhausted from the cylinder cavity, the flow guide notch has the function of guiding the gas to be exhausted, so that the inlet force of the compressor can be improved. The guide cut is only positioned in the setting column, and the projection of the guide cut on the end surface is positioned in the projection of the cylinder cavity on the end surface. The part of the exhaust hole is covered by the air cylinder and the sliding sheet, the intersection point of the exhaust hole and the projection of the air cylinder cavity on the end surface, which is far away from the sliding sheet, is a first intersection point, the intersection point of the exhaust hole and the projection of the sliding sheet on the end surface, which is near the center of the air cylinder cavity, is a second intersection point, the projection of the cylinder on the end surface is a set fan shape, the set fan shape takes the center of the exhaust hole as the fan-shaped circle center, and the two sides of the set fan shape are formed by rays from the fan-shaped circle center to the first intersection point and the second intersection.
Specifically, two sides of the set fan shape are composed of a first ray and a second ray, a connecting line of the circle center of the exhaust hole and the first intersection point forms the first ray, a connecting line of the circle center of the exhaust hole and the second intersection point forms the second ray, and an included angle between the first ray and the second ray is theta. It should be noted that the projection of the diversion notch on the cylinder end face must be within the range limited by the set fan shape, and if the projection exceeds the range limited by the set fan shape, the diversion notch will increase the clearance volume of the exhaust hole, which will affect the sealing of the slide sheet 40 end face, reduce the cooling capacity of the refrigerant gas, and is not good for improving the inlet force of the compressor.
According to the compression mechanism of the compressor of other embodiments of the invention, the guide notch is arranged on the partition plate between two adjacent cylinders, the guide notch has a simple structure and is easy to process, the exhaust vortex loss at the inlet of the exhaust hole can be reduced, the airflow velocity gradient on the section of the outlet of the exhaust hole is reduced, the exhaust flow velocity of the exhaust hole can be reduced, the inlet force of the compressor is improved, and the energy efficiency of the compressor can be improved.
According to some embodiments of the invention, the fan-shaped portion is provided with a center line of symmetry, the cylinder is provided with a center plane of symmetry passing through the center line of symmetry and passing through the axis of the exhaust hole, and the guide slits are symmetrically arranged with respect to the center plane of symmetry. It will be appreciated that the symmetry center line divides the given fan into two equal parts, i.e. the angle between the symmetry center line and the first and second rays is theta/2, and the diversion cuts are spatially symmetrical with respect to the symmetry center plane. The diversion cuts are arranged to be symmetrical about the symmetrical center plane, so that the difficulty of the processing technology of the diversion cuts can be reduced, batch processing of the diversion cuts can be realized, and the production efficiency is greatly improved.
According to some embodiments of the present invention, the guide slits are formed by intersecting the partition plates with the slit rotators, and the axes of the slit rotators are parallel to or coincide with the axes of the exhaust holes, so that the processing process of the guide slits can be simplified. It can be understood that, when the diversion cuts are processed, the axes of the cut-off revolution bodies and the axes of the central lines of the exhaust holes can be coincident, or can be parallel to each other and have a certain offset distance, as long as the projection of the diversion cuts formed by the cut-off revolution bodies on the end surfaces is ensured to fall within the range limited by the set fan shape.
In some embodiments of the present invention, the radius of the exhaust hole is R, and the radius R0 of the notch rotator forming the diversion cut portion is not more than 1.5 × R, according to multiple tests and simulation verification of the inventor, when the projection of the diversion cut on the end surface falls within the range defined by the set sector and the maximum radius R0 of the notch rotator is not more than 1.5 × R, the diversion effect of the diversion cut is the best, and the energy efficiency of the compressor can be improved to the maximum extent.
In some examples of the present invention, the inner circumferential surface of the guide slit is formed as a stepped surface, so that the guide slit may reduce the air flow velocity at the discharge hole, improving the inlet force of the compressor. It can be understood that the inner peripheral surface of the diversion notch is not limited to be arranged as a stepped surface, the inner peripheral surface of the diversion notch can also be arranged as a conical surface, and the shape of the inner peripheral surface of the diversion notch is comprehensively selected according to the position of the diversion notch and the diameter of the exhaust hole.
The compressor according to the embodiment of the present invention includes the compression mechanism 100 of the compressor according to the above-described embodiment of the present invention.
According to the compressor of the embodiment of the invention, by arranging the compression mechanism 100, the compression mechanism 100 can be provided with the guide notch 220 on the partition plate between the bearing 20 and two adjacent cylinders 10, the guide notch 220 has a simple structure and is easy to process, the exhaust vortex loss at the inlet of the exhaust hole 210 can be reduced, the airflow speed gradient on the outlet section of the exhaust hole 210 can be reduced, the exhaust flow speed of the exhaust hole 210 can be reduced, the inlet force of the compressor can be improved, and the energy efficiency of the compressor can be improved.
A compression mechanism 100 of a compressor according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 4 and 8, and the compression mechanism 100 is used in a single cylinder compressor. It is to be understood that the following description is only exemplary, and not restrictive of the invention.
As shown in fig. 1 to 4, a compression mechanism 100 of a compressor according to an embodiment of the present invention includes: cylinder 10, bearing 20, piston 30, slide sheet 40. Wherein, the cylinder 10 defines the slide sheet groove 110 and the cylinder cavity 120 therein, the bearing 20 is arranged on the end surface of the cylinder 10, the bearing 20 is provided with a valve seat 250 and an exhaust valve 240, the exhaust hole 210 is arranged on the valve seat 250, the exhaust valve 240 is arranged on the upper portion of the exhaust hole 210, the inlet end of the exhaust hole 210 is communicated with the cylinder cavity 120, wherein the inlet hole and the exhaust hole 210 are oppositely arranged. The piston 30 is eccentrically rotatably provided in the cylinder 10, and the piston 30 is eccentrically moved by a crankshaft (not shown). The inner circumference of the inlet end of the exhaust hole 210 is provided with a flow guide notch 220, the end surface of the cylinder 10 is provided with a set fan shape 230, two sides of the set fan shape 230 are formed by a first ray 230a and a second ray 230b, wherein a connecting line of the center of the exhaust hole 210 and the first intersection point 220a forms the first ray 230a, a connecting line of the center of the exhaust hole 210 and the second intersection point 220b forms the second ray 230b, and the included angle between the first ray 230a and the second ray 230b is theta.
As shown in fig. 2, the projection of the diversion notch 220 on the end surface falls within the range defined by the set fan 230, wherein the radius of the exhaust hole 210 is R, the maximum radius of the notch revolving body is R0, the included angle between the generatrix of the notch revolving body and the axis 220c of the notch revolving body is α, the offset distance between the axis 220c of the notch revolving body and the axis 210a of the exhaust hole is δ, wherein δ is greater than or equal to 0, the total height of the valve seat 250 is H, the depth of the diversion notch 220 is H, the radius of the notch revolving body satisfies R0 is less than or equal to 1.5 × R, the depth H of the diversion notch 220 satisfies H ═ R0+ δ -R) × ot α, and H is less than or equal to 0.8 × H.
In this embodiment, the guide slits 220 on the exhaust holes 210 may be made of a material that is removed radially outward, or may be formed by casting.
When the compression mechanism 100 operates, low-temperature and low-pressure refrigerant gas enters the cylinder cavity 120 through the air inlet hole, the crankshaft drives the piston 30 to perform eccentric motion, so as to compress the refrigerant gas in the cylinder cavity 120, wherein the sliding sheet 40 initially and finally abuts against the outer peripheral wall of the piston 30, and the sliding sheet 40 slides along the sliding sheet groove 110 in a reciprocating manner along with the rotation of the piston 30. When the refrigerant gas in the cylinder chamber 120 is compressed to a set pressure, the discharge valve 240 is opened, and the refrigerant gas of high temperature and high pressure is discharged out of the cylinder chamber 120 through the discharge hole 210. Due to the flow guide notch 220 arranged at the exhaust hole 210, the airflow speed gradient on the outlet section of the exhaust hole 210 can be reduced, so that the exhaust flow speed of the exhaust hole 210 can be reduced, the inlet force of the compressor can be improved, and the energy efficiency of the compressor can be improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (12)
1. A compression mechanism of a compressor, comprising:
the air cylinder is internally provided with a slide sheet groove and an air cylinder cavity;
the bearing is arranged on the end face of the cylinder, the bearing is provided with an exhaust hole, and the inlet end of the exhaust hole is communicated with the cylinder cavity;
the piston is eccentrically and rotatably arranged in the cylinder;
the sliding piece can be arranged in the sliding piece groove in a reciprocating mode, and the inner end of the sliding piece is abutted against the outer peripheral wall of the piston; wherein the content of the first and second substances,
the inner circumference of the inlet end of the exhaust hole is provided with a flow guide cut which is only positioned in the setting column body, and the projection of the flow guide cut on the end surface is positioned in the projection of the cylinder cavity on the end surface, wherein,
one part of the exhaust hole is covered by the air cylinder and the sliding vane, the intersection point of the two intersection points of the projection of the exhaust hole and the air cylinder cavity on the end surface, which is far away from the sliding vane, is a first intersection point, the intersection point of the two intersection points of the projection of the exhaust hole and the sliding vane on the end surface, which is close to the center of the air cylinder cavity, is a second intersection point, the projection of the cylinder on the end surface is a set fan shape, the set fan shape takes the center of the exhaust hole as the center of the fan shape, and the two sides of the set fan shape are formed by the rays from the center of the fan shape to the first intersection point and the second intersection point respectively.
2. The compression mechanism of a compressor according to claim 1, wherein the setting sector has a center line of symmetry, the setting cylinder has a center plane of symmetry passing through the center line of symmetry and passing through an axis of the discharge hole, and the guide slits are symmetrically disposed with respect to the center plane of symmetry.
3. The compression mechanism of a compressor according to claim 1, wherein the guide slit is formed by intersecting the bearing with a slit rotor, and an axis of the slit rotor is parallel to or coincides with an axis of the discharge hole.
4. The compression mechanism of a compressor according to claim 3, wherein the radius of said discharge hole is R, and the maximum radius R0 of the portion of said notched rotor where said guide notch is formed is 1.5 xR or less.
5. The compression mechanism of the compressor, according to claim 4, wherein an included angle between a generatrix of the notched rotary body and an axis of the notched rotary body is α, a distance between the axis of the notched rotary body and an axis of the exhaust hole is δ, δ is greater than or equal to 0, a total height of the exhaust hole valve seat is H, and a depth H of the guide notch satisfies a relationship of (R0+ δ -R) x cot α, and H is less than or equal to 0.8 x H.
6. The compression mechanism of a compressor according to claim 1, wherein an inner circumferential surface of the guide slit is formed as a stepped surface.
7. A compression mechanism of a compressor, comprising:
the air cylinder comprises a plurality of air cylinders, a slide sheet groove and an air cylinder cavity are defined in each air cylinder, a piston capable of eccentrically rotating is arranged in each air cylinder, and a slide sheet capable of reciprocating is arranged in each slide sheet groove;
the partition plate is arranged between two adjacent cylinders, the partition plate is provided with an exhaust hole, and the inlet end of the exhaust hole is communicated with the corresponding cylinder cavity; wherein the content of the first and second substances,
the inner circumference of the inlet end of the exhaust hole is provided with a flow guide cut which is only positioned in the setting column, and the projection of the flow guide cut on the end surface of the cylinder is positioned in the projection of the cylinder cavity on the end surface, wherein,
a part of the exhaust hole is covered by the corresponding cylinder and the sliding vane, the intersection point of the two projection points of the exhaust hole and the cylinder cavity on the end surface, which is far away from the sliding vane, is a first intersection point, the intersection point of the two projection points of the exhaust hole and the sliding vane on the end surface, which is near to the center of the cylinder cavity, is a second intersection point, the projection of the cylinder on the end surface is a set sector, the set sector takes the center of the exhaust hole as the circle center of the sector, and the two sides of the set sector are formed by the rays from the circle center of the sector to the first intersection point and the second intersection point respectively.
8. The compression mechanism of a compressor according to claim 7, wherein the setting sector has a center line of symmetry, the setting cylinder has a center plane of symmetry passing through the center line of symmetry and passing through an axis of the discharge hole, and the guide slits are symmetrically disposed with respect to the center plane of symmetry.
9. The compression mechanism of a compressor according to claim 7, wherein the guide slit is formed by intersecting the partition plate and a slit rotor, and an axis of the slit rotor is parallel to or coincides with an axis of the discharge hole.
10. The compression mechanism of a compressor, according to claim 7, wherein the radius of said discharge hole is R, and the maximum radius R0 of the portion of said notched rotor where said guide notch is formed is 1.5 xR or less.
11. The compressor mechanism of claim 10, wherein an included angle between a generatrix of the notched rotary body and an axis of the notched rotary body is α, a distance between the axis of the notched rotary body and an axis of the exhaust hole is δ, δ is greater than or equal to 0, a total height of the exhaust hole valve seat is H, and a depth H of the diversion notch satisfies a relationship of (R0+ δ -R) × ot α, and H is less than or equal to 0.8 × H.
12. A compressor characterized by comprising a compression mechanism of the compressor according to any one of claims 1 to 11.
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| CN201710527051.3A CN107100842B (en) | 2017-06-30 | 2017-06-30 | Compression mechanism of compressor and compressor with same |
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| CN111692591B (en) * | 2019-02-27 | 2022-10-28 | 无锡小天鹅电器有限公司 | Flue gas generating device and drying machine |
| CN114183368B (en) * | 2021-12-08 | 2023-09-05 | 珠海凌达压缩机有限公司 | Exhaust structure of compressor and compressor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5676535A (en) * | 1995-11-16 | 1997-10-14 | Carrier Corporation | Enhanced rotary compressor valve port entrance |
| JP2011089482A (en) * | 2009-10-23 | 2011-05-06 | Panasonic Corp | Rotary compressor |
| CN203453060U (en) * | 2013-08-20 | 2014-02-26 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN204239261U (en) * | 2014-11-19 | 2015-04-01 | 广东美芝制冷设备有限公司 | Rotary compressor |
| WO2017009917A1 (en) * | 2015-07-13 | 2017-01-19 | 三菱電機株式会社 | Compressor |
| CN206860440U (en) * | 2017-06-30 | 2018-01-09 | 广东美芝制冷设备有限公司 | The compression mechanism of compressor and there is its compressor |
-
2017
- 2017-06-30 CN CN201710527051.3A patent/CN107100842B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5676535A (en) * | 1995-11-16 | 1997-10-14 | Carrier Corporation | Enhanced rotary compressor valve port entrance |
| JP2011089482A (en) * | 2009-10-23 | 2011-05-06 | Panasonic Corp | Rotary compressor |
| CN203453060U (en) * | 2013-08-20 | 2014-02-26 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN204239261U (en) * | 2014-11-19 | 2015-04-01 | 广东美芝制冷设备有限公司 | Rotary compressor |
| WO2017009917A1 (en) * | 2015-07-13 | 2017-01-19 | 三菱電機株式会社 | Compressor |
| CN206860440U (en) * | 2017-06-30 | 2018-01-09 | 广东美芝制冷设备有限公司 | The compression mechanism of compressor and there is its compressor |
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