CN111287980B - Compressor and exhaust valve subassembly, refrigeration plant thereof - Google Patents
Compressor and exhaust valve subassembly, refrigeration plant thereof Download PDFInfo
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- CN111287980B CN111287980B CN201811504418.0A CN201811504418A CN111287980B CN 111287980 B CN111287980 B CN 111287980B CN 201811504418 A CN201811504418 A CN 201811504418A CN 111287980 B CN111287980 B CN 111287980B
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- exhaust valve
- valve seat
- compressor
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- exhaust port
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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
- F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
- F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
Abstract
The invention provides a compressor, an exhaust valve assembly and refrigeration equipment thereof. According to the exhaust valve assembly provided by the invention, the thickness of the exhaust valve seat at the exhaust port is reduced along the direction from inside to outside, the maximum deformation of the exhaust valve seat caused by insufficient rigidity of the exhaust valve seat due to the over-small thickness of the exhaust valve seat is avoided, the energy efficiency, the reliability and the service life of a compressor are further influenced, and the problem that the clearance volume at the exhaust port is increased due to the integral increase of the thickness of the exhaust valve seat can be avoided. Therefore, the thickness of the exhaust valve seat close to the outer side at the exhaust port is reduced, the clearance volume of the exhaust port can be reduced, the thickness of the exhaust valve group close to the inner side at the exhaust port is thicker, the deformation of the exhaust valve seat close to the inner side at the exhaust port can be reduced, and the performance and the reliability of the compressor are improved.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a discharge valve assembly of a compressor, a compressor comprising the discharge valve assembly and refrigeration equipment comprising the compressor.
Background
In the prior art, in the bearing with the exhaust valve assembly, the thickness of the exhaust valve seat of the bearing is much smaller than that of the bearing, because the thickness of the bearing is very small, the bearing is subjected to the radial force of a crankshaft and the exhaust pressure on the upper surface of the exhaust valve seat during the operation of the compressor, and the stress is concentrated on the exhaust valve seat. After the bearing is installed with the cylinder, the exhaust valve seat part close to the inner diameter side of the bearing is in a suspended state, and the deformation of the exhaust valve seat part is the largest after simulation.
The structure is usually designed, and in order to avoid the deformation of the part of the exhaust valve seat, the exhaust valve seat is usually designed to be integrally thickened, but the clearance volume at the exhaust port is increased, so that the performance is greatly reduced. If the thickness of the exhaust valve seat is too small, the rigidity of the exhaust valve seat is insufficient, stress concentration is formed at the exhaust valve seat during operation of the compressor, the deformation of the exhaust valve seat is maximum, the pressure of the contact surface of the exhaust valve seat and the sliding sheet is increased after the deformation, the input power of the compressor is increased, and the energy efficiency of the compressor is reduced. Meanwhile, the pressure of the contact surface between the bearing and the roller and the contact surface between the bearing and the sliding vane are increased, so that the abrasion of related parts is increased, and the reliability of the compressor is reduced. In addition, if the thickness of the exhaust valve seat is too small, in the bearing machining process, the compression surface of the bearing deforms after machining due to uneven stress, the precision is poor, the energy efficiency and the reliability of the compressor are further affected, and the service life of the compressor is shortened.
In the conventional bearing design of the rotary compressor, as shown in fig. 1 and 2, the thickness of the exhaust valve seat 1 ' is usually 1.5-2.5 mm, and the upper surface and the lower surface of the exhaust valve seat 1 ' where the exhaust port 11 ' is arranged are designed in parallel. In such designs, the bearings are typically less rigid and stresses are typically concentrated at the exhaust port and near the inner diameter.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
To this end, a first aspect of the present invention is directed to a discharge valve assembly of a compressor.
It is an object of a second aspect of the present invention to provide a compressor including the above discharge valve assembly.
A third aspect of the present invention is directed to a refrigeration appliance comprising the above-described compressor.
To achieve the above object, according to a first aspect of the present invention, there is provided a discharge valve assembly of a compressor, the compressor including a bearing, the discharge valve assembly being disposed on the bearing, the discharge valve assembly including: the exhaust valve comprises an exhaust valve seat, wherein an exhaust port penetrating through the thickness of the exhaust valve seat is formed in the exhaust valve seat, and the thickness of the exhaust valve seat arranged at the exhaust port is reduced along the direction from inside to outside.
According to the exhaust valve assembly of the compressor provided by the technical scheme of the invention, the thickness of the exhaust valve seat at the exhaust port is reduced along the direction from inside to outside, wherein the inside and outside means that the direction close to the axis of the bearing is inside and the direction far away from the axis of the bearing is outside, or the direction close to the center of the bearing is inside and the direction far away from the center of the bearing is outside.
The thickness of the exhaust valve seat at the exhaust port is reduced along the direction from inside to outside, the deformation quantity at the exhaust valve seat is maximum due to insufficient rigidity of the exhaust valve seat caused by the over-small thickness of the exhaust valve seat, the energy efficiency, the reliability and the service life of the compressor are further influenced, and the problem that the clearance volume at the exhaust port is increased due to the fact that the thickness of the exhaust valve seat is integrally increased can be solved. Therefore, the thickness of the exhaust valve seat close to the outer side at the exhaust port is reduced, the clearance volume of the exhaust port can be reduced, the thickness of the exhaust valve group close to the inner side at the exhaust port is thicker, the deformation of the exhaust valve seat close to the inner side at the exhaust port can be reduced, and the performance and the reliability of the compressor are improved.
In addition, the exhaust valve assembly provided by the technical scheme of the invention also has the following additional technical characteristics:
in the above technical solution, preferably, the exhaust valve seat is provided with a mounting portion; the exhaust valve assembly comprises an exhaust valve plate and a lift limiter, one end of the exhaust valve plate is fixed on the mounting part, and the other end of the exhaust valve plate can move between positions for opening and closing the exhaust port; the lift limiter is arranged on the exhaust valve plate to limit the lift of the exhaust valve plate, one end of the lift limiter is fixed to one end of the exhaust valve plate, and the other end of the lift limiter extends upwards in an inclined mode.
In the above technical scheme, preferably, the discharge valve plate is arranged in an inclined manner, and when the discharge valve plate is closed to the discharge port, the discharge valve plate is attached to the surface of the discharge valve seat, which deviates from the cylinder of the compressor.
The compressor includes the cylinder, and the bearing includes upper bearing and lower bearing, and the upper bearing setting is in the top of cylinder, and lower bearing setting is in the below of cylinder, and compression chamber is injectd jointly to upper bearing, lower bearing, cylinder, is equipped with the exhaust valve subassembly on at least one in upper bearing and the lower bearing.
When the exhaust valve assembly is used for being mounted on the upper bearing, the surface of the exhaust valve seat facing the cylinder is the lower surface of the exhaust valve seat, and the surface of the exhaust valve seat facing away from the cylinder is the upper surface of the exhaust valve seat; when the exhaust valve assembly is used to mount on the lower bearing, the surface of the exhaust valve seat facing the cylinder is referred to as the upper surface of the exhaust valve seat and the surface of the exhaust valve seat facing away from the cylinder is referred to as the lower surface of the exhaust valve seat.
The exhaust valve plate can selectively open and close the exhaust port, for example, when the compressor inhales and the pressure in the compressor is low, the exhaust valve plate closes the exhaust port, and the compressor cannot exhaust; when the compressor exhausts air and the pressure in the compressor is high, the gaseous refrigerant can push the exhaust valve plate and drive the exhaust valve plate to open the exhaust port, and the gaseous refrigerant in the compressor can be exhausted out of the compressor through the exhaust port.
Optionally, the discharge valve piece can slope the setting, and is concrete, to take the discharge valve subassembly to install on the upper bearing as an example, along discharge valve piece one end (the lid is established and is leaned on outer one end at the gas vent) to the direction of the other end (the lid is established and is leaned on interior one end at the gas vent), the discharge valve piece tilt up, and further, the degree of tilt of discharge valve piece is the same with the degree of tilt of discharge valve seat upper surface, and when the discharge valve piece closed the gas vent like this, the discharge valve piece laminating was deviating from at the discharge valve seat the cylinder of compressor on the surface, when the discharge valve piece closed the gas vent, the discharge valve piece was better to the leakproofness of gas vent.
The lift limiter is arranged on the exhaust valve plate to limit the lift of the exhaust valve plate, taking the exhaust valve assembly mounted on the upper bearing as an example, one end of the lift limiter is fixed on one end of the exhaust valve plate, and the other end of the lift limiter extends upwards in an inclined mode. The exhaust valve plate is arranged between the exhaust valve seat and the lift limiter, and the lift limiter can play a role in limiting the lift of the exhaust valve plate, so that the lift limiter can play a certain protection role in protecting the exhaust valve plate. If the exhaust valve assembly is mounted on the lower bearing, the exhaust valve assembly and the lift stopper are inclined downward, preferably gradually, in an outside-in direction.
Specifically, the mounting portion may be a mounting hole formed in the exhaust valve seat, a first through hole is formed in one end of the exhaust valve sheet (the exhaust valve sheet is used to cover the end close to the outer side of the exhaust port), and a second through hole is formed in one end of the lift stopper (the end corresponding to the exhaust valve sheet). The exhaust valve assembly may further include a mounting member sequentially passing through the second through hole, the first through hole, and the mounting hole (i.e., the mounting portion) to fix the exhaust valve sheet and the lift stopper on the exhaust valve seat. Alternatively, the mounting holes may be through holes or blind holes. Optionally, the mounting hole may be a screw hole or a rivet hole, and when the mounting hole is a screw hole, the mounting member is a bolt; when the mounting hole is a rivet hole, the mounting member is a rivet. Wherein the inner diameters of the first and second through holes may be the same to facilitate the penetration of the mounting member.
Further, the exhaust valve seat deviates from the surface of the cylinder of the compressor can be provided with an annular bulge around the exhaust port, and when the exhaust valve plate closes the exhaust port, the exhaust valve plate is attached to the annular bulge. Because the annular bulge protrudes upwards to the top of the exhaust port, when the exhaust valve seat closes the exhaust port, the exhaust valve plate can be well abutted to the annular bulge, so that the sealing performance of the exhaust valve plate for closing the exhaust port can be improved, and the phenomenon that the exhaust valve plate is not tight when closing the exhaust port is prevented.
In the above technical solution, preferably, the thickness of the exhaust valve seat at the exhaust port is gradually reduced along the direction from inside to outside.
The thickness of the exhaust valve seat at the exhaust port is reduced along the direction from inside to outside, and the thickness of other positions of the exhaust valve seat can be in any range. That is, the thickness of the wall thickness of the exhaust valve seat at the position corresponding to the exhaust valve plate and the lift limiter is gradually reduced along the direction from inside to outside, and the wall thickness of the exhaust valve seat at the position not corresponding to the exhaust valve plate and the lift limiter can be within any range, so that the exhaust valve seat is convenient to mount and is guaranteed to have certain structural strength.
It will be appreciated that the thickness of the exhaust valve seat at the exhaust port may be gradually reduced or may be abruptly reduced, for example, in a stepwise manner.
In the above technical solution, preferably, the surface of the discharge valve seat facing the cylinder of the compressor is a horizontal plane, the surface of the discharge valve seat facing away from the cylinder of the compressor is inclined in the direction from inside to outside, and further, the surface of the discharge valve seat facing away from the cylinder of the compressor is inclined gradually in the direction from inside to outside.
When the exhaust valve seat is arranged on the upper bearing, the lower surface of the exhaust valve seat is a horizontal plane, and the upper surface of the exhaust valve seat is inclined downwards along the direction from inside to outside, so that the thickness of the exhaust valve seat is reduced from inside to outside. When the exhaust valve seat is arranged on the lower bearing, the upper surface of the exhaust valve seat is a horizontal plane, and the lower surface of the exhaust valve seat is inclined upwards along the direction from inside to outside, so that the thickness of the exhaust valve seat is reduced from inside to outside.
And the surface of the exhaust valve seat facing the cylinder of the compressor is a horizontal plane, so that the exhaust valve seat is convenient to be matched with other parts in the Austrian century, and the exhaust valve seat is also beneficial to processing and forming.
In the above technical solution, preferably, an angle formed by a surface of the discharge valve seat facing away from the cylinder of the compressor and a surface of the discharge valve seat facing the cylinder in the radial direction of the bearing is α, and α is in a range of 3 ° to 10 °.
α may be, but is not limited to, 3 °, 6 °, 9 °, or 10 °. When at least one of a surface of the discharge valve seat facing away from the cylinder of the compressor and a surface of the discharge valve seat facing toward the cylinder of the compressor is not planar, α is an angle formed by a surface of the discharge valve seat facing away from the cylinder of the compressor and a surface of the discharge valve seat facing toward the cylinder of the compressor along a bearing radial direction.
In the foregoing technical solution, preferably, if the diameter of the exhaust port is d, then (hmax-hmin)/tan α -9mm is not less than d and not more than (hmax-hmin)/tan α -4mm, α is an angle formed by a surface of the exhaust valve seat facing away from a cylinder of the compressor and a surface of the exhaust valve seat facing the cylinder in a radial direction of the bearing, hmax is a maximum thickness of the exhaust valve seat at the exhaust port on an inner side, and hmin is a minimum thickness of the exhaust valve seat at the exhaust port on an outer side.
In the above technical solution, preferably, the maximum thickness of the exhaust valve seat at the exhaust port close to the inner side is hmax, and hmax is greater than or equal to 1.4 mm; and/or the minimum thickness of the exhaust valve seat close to the outer side of the exhaust port is hmin, and hmin is more than or equal to 1mm and less than 1.4 mm.
The thickness of the portion of the exhaust valve at the exhaust port, which is located on the inner side, decreases in the inside-out direction, and further, gradually decreases in thickness.
hmin can be, but is not limited to, 1mm, 1.2mm, or 1.4 mm. The portion of the exhaust valve seat near the outer side at the exhaust port is reduced in thickness in the direction from the inside to the outside, and further, the thickness is gradually reduced.
An aspect of the second aspect of the present invention provides a compressor, including: a bearing; and a discharge valve assembly of the compressor according to any one of the aspects of the first aspect, the discharge valve assembly being provided on the bearing.
The compressor according to the second aspect of the present invention includes the discharge valve assembly according to any one of the first aspect of the present invention, so that all the beneficial effects of the discharge valve assembly according to any one of the first aspect of the present invention are achieved, and details are not repeated herein.
An aspect of a second aspect of the present invention provides a refrigeration apparatus comprising a compressor as described in any one of the aspects of the first aspect.
The refrigeration equipment provided by the technical scheme of the second aspect of the present invention includes the compressor described in any one of the technical schemes of the first aspect, so that all the beneficial effects of the compressor described in any one of the technical schemes are achieved, and details are not repeated herein.
In the description of the present invention, it should be noted that the "refrigeration equipment" mentioned in the present invention may include any device capable of refrigerating to which the technical solution of the present invention can be applied, including, but not limited to, a refrigerator, an air conditioner or a central air conditioner.
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 schematic view showing an assembled structure of an exhaust valve seat and a cylinder in the related art;
fig. 2 is a schematic sectional view of a related art exhaust valve seat.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:
1 'valve seat, 11' exhaust port.
Fig. 3 is a schematic sectional view of a compressor according to a first embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of an exhaust valve seat according to a first embodiment of the present invention;
fig. 5 is an enlarged schematic view of a portion a in fig. 4.
Wherein, the correspondence between the reference numbers and the part names in fig. 3 to 5 is:
the device comprises an upper bearing 1, a cylinder 2, a lower bearing 3, a roller 4, an exhaust valve seat 5, an exhaust port 51, an annular bulge 52, an exhaust valve plate 6 and a lift limiter 7.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
A discharge valve assembly, a compressor and a refrigeration apparatus according to some embodiments of the present invention will be described with reference to the accompanying drawings.
The utility model provides a discharge valve subassembly of compressor, compressor includes the bearing, and the compressor includes cylinder 2, and the bearing includes upper bearing 1 and lower bearing 3, and upper bearing 1 sets up in the top of cylinder 2, and lower bearing 3 sets up in the below of cylinder 2, and upper bearing 1, lower bearing 3, cylinder 2 inject the compression chamber jointly, are equipped with discharge valve subassembly on at least one in upper bearing 1 and the lower bearing 3. The cylinder 2 has the cylinder chamber, be equipped with the roller 4 of relative rolling setting in the cylinder chamber, roll and establish on the eccentric portion of bent axle, be equipped with the first shaft hole that supplies the bent axle to pass on the upper bearing 1, be equipped with the second shaft hole that supplies the bent axle to pass on the lower bearing 3, when exhaust valve subassembly sets up on upper bearing 1, inside and outside in this application can also refer to from the direction that is close to first shaft hole for interior, the direction of keeping away from first shaft hole is outer, the internal diameter refers to first shaft hole, perhaps, when exhaust valve subassembly sets up on lower bearing 3, inside and outside in this application can also refer to from the direction that is close to the second shaft hole for interior, the direction of keeping away from the second shaft hole is outer, the internal diameter refers to the second shaft hole.
The discharge valve subassembly includes: and an exhaust valve seat 5, wherein an exhaust port 51 penetrating the thickness of the exhaust valve seat 5 is formed on the exhaust valve seat 5, and the thickness of the exhaust valve seat 5 where the exhaust port 51 is arranged is reduced along the direction from inside to outside.
The first embodiment is as follows:
the case where the exhaust valve assembly is mounted on the upper bearing 1. As shown in fig. 3 to 5, the discharge valve assembly includes: an exhaust valve seat 5, an exhaust valve plate 6 and a lift limiter 7. The exhaust valve seat 5 is provided with a mounting part, an exhaust port 51 penetrating through the thickness of the exhaust valve seat 5 is formed on the exhaust valve seat 5, and the thickness of the valve seat is gradually reduced from the inner diameter side close to the upper bearing 1 to the outer side; one end (left end) of the exhaust valve plate 6 is fixed to the mounting portion, and the other end (right end) of the exhaust valve plate 6 is movable between positions of opening and closing the exhaust port 51; the lift limiter 7 is arranged on the exhaust valve plate 6 to limit the lift of the exhaust valve plate 6, one end (left end) of the lift limiter 7 is fixed on one end (left end) of the exhaust valve plate 6, and the other end (right end) of the lift limiter 7 extends upwards in an inclined mode.
The exhaust valve plate 6 is obliquely arranged, and when the exhaust valve plate 6 is closed to the exhaust port 51, the exhaust valve plate 6 is attached to the upper surface of the exhaust valve seat 5
According to the compressor discharge valve assembly of the present invention, the thickness of the discharge valve seat 5 is gradually reduced from the inner diameter side toward the outer side of the upper bearing 1.
The lower surface of the exhaust valve seat 5 is a horizontal surface, and the upper surface of the exhaust valve seat 5 extends obliquely downward from the inner diameter side close to the upper bearing 1 to the outer side.
According to the compressor exhaust valve assembly, the thickness of the exhaust valve seat 5 and the upper surface of the upper bearing 1 is reasonably set, so that the deformation distribution of the compression surface (the surface of the upper bearing 1, which is in contact with the cylinder 2) of the upper bearing 1 is improved, the deformation of the stress concentration part can be well reduced, the deformation of the exhaust valve seat 5 of the upper bearing 1 can be improved, the performance coefficient of the compressor is improved, meanwhile, the abrasion of the lower surface of the upper bearing 1, which is close to the exhaust hole on the inner diameter side of the upper bearing 1, can be reduced, and the reliability of the compressor is improved.
In some examples of the present invention, the maximum thickness of the exhaust valve seat 5 at the exhaust port 51 near the inner diameter side is hmax, which satisfies the relation: hmax is less than or equal to 1.4 mm. The minimum thickness of the exhaust valve seat 5 at the exhaust port 51 far from the inner diameter side is hmin, and hmin satisfies the relation: hmin is more than or equal to 1mm and less than 1.4 mm.
In some examples of the invention, the angle between the upper surface of the exhaust seat 5 of the upper bearing 1 and the lower surface of the exhaust seat 5 in the inside diameter from outside to inside direction is α, preferably 3 ° to 10 °.
In some examples of the invention, the exhaust port is circular, the exhaust port 51 has a diameter d, and d satisfies the relationship: (hmax-hmin)/tan alpha-9 mm is not less than d and not more than (hmax-hmin)/tan alpha-4 mm. It will be appreciated that the vent may be any shape other than circular.
Further, an annular protrusion 52 may be provided on an upper surface of the discharge valve seat 5 around the discharge port 51, and the discharge valve sheet 6 is attached to the annular protrusion 52 when the discharge valve sheet 6 closes the discharge port 51. Because the annular protrusion 52 protrudes upwards from the top of the exhaust port 51, when the exhaust valve seat 5 closes the exhaust port 51, the exhaust valve sheet 6 can be better stopped at the annular protrusion 52, so that the sealing performance of the exhaust valve sheet 6 for closing the exhaust port 51 can be improved, and the phenomenon that the exhaust valve sheet 6 is not tight when closing the exhaust port 51 is prevented.
According to the compressor provided by the invention, the exhaust valve assembly comprises the exhaust valve seat assembly in the embodiment, and due to the non-parallel design of the exhaust mounting surface of the exhaust valve seat 5 and the compression surface in the inner diameter direction of the upper bearing 1 in the exhaust structure of the compressor, the contradiction between rigidity deterioration caused by thinning of the exhaust valve seat 5 and performance improvement caused by reduction of clearance volume can be effectively balanced, and the energy efficiency of the compressor is comprehensively improved. Meanwhile, the deformation distribution of the compression surface of the upper bearing 1 in the operation process of the compressor is changed, the pressure of the position near the exhaust hole at the compression side of the upper bearing 1 and the pressure of the roller 4 are effectively reduced, the energy efficiency of the compressor is improved, the abrasion of the upper bearing 1 and the roller 4 is improved, and the reliability of the compressor is improved.
Example two:
the case where the exhaust valve assembly is mounted on the lower bearing 3. As shown in fig. 3 to 5, the discharge valve assembly includes: an exhaust valve seat 5, an exhaust valve plate 6 and a lift limiter 7. The exhaust valve seat 5 is provided with a mounting part, an exhaust port 51 penetrating through the thickness of the exhaust valve seat 5 is formed on the exhaust valve seat 5, and the thickness of the valve seat is gradually reduced from the inner diameter side close to the lower bearing 3 to the outer side; one end of the air discharge valve plate 6 is fixed on the mounting portion, and the other end of the air discharge valve plate 6 is movable between positions of opening and closing the air discharge opening 51; the lift limiter 7 is arranged on the exhaust valve plate 6 to limit the lift of the exhaust valve plate 6, one end of the lift limiter 7 is fixed on one end of the exhaust valve plate 6, and the other end of the lift limiter 7 extends downwards in an inclined mode.
The exhaust valve plate 6 is obliquely arranged, and when the exhaust valve plate 6 is closed to the exhaust port 51, the exhaust valve plate 6 is attached to the lower surface of the exhaust valve seat 5.
According to the compressor discharge valve assembly of the present invention, the thickness of the discharge valve seat 5 is gradually reduced from the inner diameter side toward the outer side of the lower bearing 3.
The upper surface of the exhaust valve seat 5 is a horizontal plane, and the lower surface of the exhaust valve seat 5 extends obliquely upward from the inner diameter side close to the lower bearing 3 to the outer side.
According to the compressor exhaust valve component, the thickness of the exhaust valve seat 5 and the lower surface of the lower bearing 3 is reasonably set, so that the deformation distribution of the compression surface (the surface of the lower bearing 3, which is in contact with the cylinder 2) of the lower bearing 3 is improved, the deformation of the stress concentration part can be well reduced, the deformation of the exhaust valve seat 5 of the lower bearing 3 can be improved, the performance coefficient of the compressor is improved, meanwhile, the abrasion of the upper surface of the lower bearing 3, which is close to the exhaust hole on the inner diameter side of the lower bearing 3, can be reduced, and the reliability of the compressor is improved.
In some examples of the present invention, the maximum thickness of the exhaust valve seat 5 at the exhaust port 51 near the inner diameter side is hmax, which satisfies the relation: hmax is less than or equal to 1.4 mm. The minimum thickness of the exhaust valve seat 5 at the exhaust port 51 far from the inner diameter side is hmin, and hmin satisfies the relation: hmin is more than or equal to 1mm and less than 1.4 mm.
In some examples of the present invention, the angle between the upper surface of the exhaust valve seat 5 of the lower bearing 3 and the lower surface of the exhaust valve seat 5 in the inside diameter outside-in direction is α, preferably 3 ° to 10 °.
In some examples of the invention, the exhaust port 51 has a diameter d that satisfies the relationship: (hmax-hmin)/tan alpha-9 mm is not less than d and not more than (hmax-hmin)/tan alpha-4 mm.
Further, an annular protrusion 52 may be provided on the lower surface of the exhaust valve seat 5 around the exhaust port 51, and when the exhaust valve sheet 6 closes the exhaust port 51, the exhaust valve sheet 6 is attached to the annular protrusion 52. Because the annular protrusion 52 protrudes upwards from the top of the exhaust port 51, when the exhaust valve seat 5 closes the exhaust port 51, the exhaust valve sheet 6 can be better stopped at the annular protrusion 52, so that the sealing performance of the exhaust valve sheet 6 for closing the exhaust port 51 can be improved, and the phenomenon that the exhaust valve sheet 6 is not tight when closing the exhaust port 51 is prevented.
According to the compressor provided by the invention, the exhaust valve assembly comprises the exhaust valve seat assembly in the embodiment, and due to the non-parallel design of the exhaust mounting surface of the exhaust valve seat 5 and the compression surface in the inner diameter direction of the lower bearing 3 in the exhaust structure of the compressor, the contradiction between rigidity deterioration caused by thinning of the exhaust valve seat 5 and performance improvement caused by reduction of clearance volume can be effectively balanced, and the energy efficiency of the compressor is comprehensively improved. Meanwhile, the invention changes the deformation distribution of the compression surface of the lower bearing 3 in the running process of the compressor, effectively reduces the pressure of the position near the exhaust hole at the compression side of the lower bearing 3 and the roller 4, improves the energy efficiency of the compressor, improves the abrasion of the lower bearing 3 and the roller 4 and improves the reliability of the compressor.
An embodiment of a second aspect of the present invention provides a compressor comprising: a bearing; and a discharge valve assembly of the compressor as set forth in any one of the embodiments of the first aspect, said discharge valve assembly being disposed on said bearing.
The compressor provided by the embodiment of the second aspect of the present invention includes the exhaust valve assembly described in any one of the embodiments of the first aspect, so that the compressor has all the advantages of the exhaust valve assembly described in any one of the embodiments of the first aspect, and therefore, the description thereof is omitted.
An embodiment of a second aspect of the invention provides a refrigeration apparatus comprising a compressor as described in any one of the embodiments of the first aspect.
The refrigeration equipment provided by the embodiment of the second aspect of the present invention includes the compressor described in any one of the embodiments of the first aspect, so that the refrigeration equipment has all the advantages of the compressor described in any one of the embodiments, and details are not repeated herein.
In the description of the present invention, the term "plurality" means two or more unless explicitly specified or limited otherwise; the terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, or an electrical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present specification, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A discharge valve assembly of a compressor, said compressor including a bearing, said discharge valve assembly being disposed on said bearing, said discharge valve assembly comprising:
the exhaust valve comprises an exhaust valve seat, wherein an exhaust port penetrating through the thickness of the exhaust valve seat is formed in the exhaust valve seat, and the thickness of the exhaust valve seat arranged at the exhaust port is reduced along the direction from inside to outside;
and if the diameter of the exhaust port is d, then (hmax-hmin)/tan alpha-9 mm is not less than d and not more than (hmax-hmin)/tan alpha-4 mm, alpha is an angle formed by the surface of the exhaust valve seat, which is far away from the cylinder of the compressor, and the surface of the exhaust valve seat, which faces the cylinder, along the radial direction of the bearing, hmax is the maximum thickness of the exhaust valve seat at the exhaust port close to the inner side, and hmin is the minimum thickness of the exhaust valve seat at the exhaust port close to the outer side.
2. The discharge valve assembly of a compressor according to claim 1,
the thickness of the exhaust valve seat arranged at the exhaust port is gradually reduced along the direction from inside to outside.
3. The discharge valve assembly of a compressor according to claim 1,
the surface of the exhaust valve seat facing the cylinder of the compressor is a horizontal plane, and the surface of the exhaust valve seat facing away from the cylinder is obliquely arranged along the direction from inside to outside.
4. The discharge valve assembly of a compressor according to claim 1,
the surface of the exhaust valve seat, which is far away from the cylinder of the compressor, and the surface of the exhaust valve seat, which faces the cylinder, form an angle alpha along the radial direction of the bearing, and the range of the angle alpha is 3-10 degrees.
5. The discharge valve assembly of a compressor according to claim 1,
the maximum thickness of the exhaust valve seat close to the inner side at the exhaust port is hmax, and the hmax is more than or equal to 1.4 mm; and/or the presence of a gas in the gas,
the minimum thickness of the exhaust valve seat close to the outer side of the exhaust port is hmin, and then hmin is more than or equal to 1mm and less than 1.4 mm.
6. The discharge valve assembly of a compressor according to any one of claims 1 to 5,
the exhaust valve seat is provided with a mounting part;
the exhaust valve assembly comprises an exhaust valve plate and a lift limiter, one end of the exhaust valve plate is fixed on the mounting part, and the other end of the exhaust valve plate can move between positions for opening and closing the exhaust port; the lift limiter is arranged on the exhaust valve plate to limit the lift of the exhaust valve plate, one end of the lift limiter is fixed to one end of the exhaust valve plate, and the other end of the lift limiter extends upwards in an inclined mode.
7. The discharge valve assembly of a compressor according to claim 6,
the exhaust valve plate is obliquely arranged, and when the exhaust valve plate is closed to the exhaust port, the exhaust valve plate is attached to the surface of the exhaust valve seat, which deviates from the cylinder of the compressor.
8. A compressor, comprising:
a bearing; and
a discharge valve assembly of a compressor as claimed in any one of claims 1 to 7, disposed on said bearing.
9. A refrigerating apparatus comprising a compressor as claimed in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811504418.0A CN111287980B (en) | 2018-12-10 | 2018-12-10 | Compressor and exhaust valve subassembly, refrigeration plant thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811504418.0A CN111287980B (en) | 2018-12-10 | 2018-12-10 | Compressor and exhaust valve subassembly, refrigeration plant thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN111287980A CN111287980A (en) | 2020-06-16 |
| CN111287980B true CN111287980B (en) | 2022-02-11 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2151746A (en) * | 1936-07-14 | 1939-03-28 | Westinghouse Electric & Mfg Co | Compressor valve structure |
| CN1697929A (en) * | 2003-03-05 | 2005-11-16 | 大金工业株式会社 | Compressor |
| CN203717355U (en) * | 2014-01-20 | 2014-07-16 | 广东美芝制冷设备有限公司 | Rotating compressor and bearing assembly thereof |
| CN104763636A (en) * | 2015-04-17 | 2015-07-08 | 广东美芝制冷设备有限公司 | Exhausting valve assembly used for compressor and compressor with same |
| CN207740142U (en) * | 2018-05-09 | 2018-08-17 | 华意压缩机股份有限公司 | A kind of reciprocating compressor and its valve group component |
| CN208203579U (en) * | 2018-05-25 | 2018-12-07 | 广东美芝制冷设备有限公司 | Exhaust valve component and compressor |
-
2018
- 2018-12-10 CN CN201811504418.0A patent/CN111287980B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2151746A (en) * | 1936-07-14 | 1939-03-28 | Westinghouse Electric & Mfg Co | Compressor valve structure |
| CN1697929A (en) * | 2003-03-05 | 2005-11-16 | 大金工业株式会社 | Compressor |
| CN203717355U (en) * | 2014-01-20 | 2014-07-16 | 广东美芝制冷设备有限公司 | Rotating compressor and bearing assembly thereof |
| CN104763636A (en) * | 2015-04-17 | 2015-07-08 | 广东美芝制冷设备有限公司 | Exhausting valve assembly used for compressor and compressor with same |
| CN207740142U (en) * | 2018-05-09 | 2018-08-17 | 华意压缩机股份有限公司 | A kind of reciprocating compressor and its valve group component |
| CN208203579U (en) * | 2018-05-25 | 2018-12-07 | 广东美芝制冷设备有限公司 | Exhaust valve component and compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111287980A (en) | 2020-06-16 |
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