CN110985349A - Air valve assembly and compressor using same - Google Patents
Air valve assembly and compressor using same Download PDFInfo
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- CN110985349A CN110985349A CN201911370795.4A CN201911370795A CN110985349A CN 110985349 A CN110985349 A CN 110985349A CN 201911370795 A CN201911370795 A CN 201911370795A CN 110985349 A CN110985349 A CN 110985349A
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- valve plate
- exhaust valve
- air valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
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Abstract
The invention belongs to the technical field of compressors, and particularly discloses an air valve assembly which comprises an exhaust valve plate, a valve plate and a limiting plate, wherein a groove is formed in the valve plate, an exhaust port is formed in the groove, the limiting plate and the groove are installed in a matched mode, the exhaust valve plate is tightly pressed in the groove by the limiting plate, a tongue portion of the exhaust valve plate covers the exhaust port to form an opening-closing valve, a grid-shaped pattern structure is arranged at the root of the exhaust valve plate and is formed by arranging a plurality of grid strips at intervals, a deformation structure is arranged on one or more grid strips of the grid-shaped pattern structure, and the deformation structure is flattened after being in contact with a pressing surface of the limiting plate and extends outwards. The invention also discloses a compressor using the air valve assembly. The invention has simple structure and low cost, and can well solve the problems of powder valve plate abrasion caused by the swing of the exhaust valve plate, finally dislocation and poor sealing of the tongue part of the exhaust valve plate and the exhaust hole of the valve plate, and failure of the compressor caused by serious internal leakage.
Description
Technical Field
The invention belongs to the technical field of compressors, and particularly relates to an air valve assembly and a compressor using the same.
Background
The air valve assembly of the traditional compressor comprises an exhaust valve plate, a valve plate and a limiting plate. The valve plate is provided with an exhaust hole, a suction hole and a cylinder head part mounting hole. In which the discharge orifice in the valve plate forms the so-called clearance volume of the compressor, which seriously affects the compressor cooling capacity and COP. In order to reduce the clearance volume of the exhaust hole as much as possible, the valve plate is manufactured by adopting a powder metallurgy process, a groove is arranged on the valve plate, and the exhaust valve plate is arranged in the groove of the valve plate. In order to assemble the exhaust valve plate in the production process, a certain gap is reserved between the root of the exhaust valve plate and the valve plate mounting groove, and the exhaust valve plate is in clearance fit in a free state. However, the clearance must not be too large, which could result in a non-centered fit between the tongue of the discharge valve plate and the discharge orifice of the valve plate, resulting in poor sealing of the discharge orifice and internal leakage.
In order to fix the exhaust valve plate, a limiting plate is arranged on the exhaust valve plate. After the compressor cylinder head component is assembled, the limiting plate is tightly pressed on the root of the exhaust valve plate through the pretightening force of the screw. The exhaust valve plate is made of stainless steel, and the surface is flat and smooth; the limiting plate is made of cold-rolled steel plates, and the surface of a pressing surface corresponding to the root of the exhaust valve plate is flat and smooth. When the compressor runs, a small amount of lubricating oil enters the exhaust system and enters between the limiting plate and the root of the exhaust valve plate, so that the friction force of two metal pieces with flat and smooth surfaces is reduced under the action of the lubricating oil, and the transverse movement of the exhaust valve plate becomes possible. When the compressor is in a bad working condition, the exhaust flow and the exhaust pressure are increased sharply, and the exhaust pulsation is severe, the friction force generated by the pressing force of the root part of the exhaust valve plate is not enough to offset the transverse acting force of the exhaust valve plate, and the exhaust valve plate swings transversely due to the gap between the root part of the exhaust valve plate and the mounting groove of the valve plate. The material strength of the exhaust valve plate is far greater than that of the powder valve plate, and when the exhaust valve plate transversely swings for a long time, the root of the exhaust valve plate continuously collides and rubs with the valve plate mounting groove to generate abrasion and cutting effects. The metal dust generated by abrasion circularly flows into the friction pair of the compressor moving part along with the refrigerant in the refrigerating system, so that the running power of the compressor is increased, and even the compressor is frictionally blocked. Because of continuous friction, cutting and abrasion between the root of the exhaust valve plate and the valve plate mounting groove, the clearance between the root of the exhaust valve plate and the valve plate mounting groove is larger and larger, finally, the dislocation and poor sealing between the tongue of the exhaust valve plate and the exhaust hole of the valve plate are caused, and the compressor fails due to serious internal leakage.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the air valve assembly and the compressor using the same are simple in structure and low in cost, and can well solve the problems that the powder valve plate is abraded due to shaking of the exhaust valve plate, and finally the tongue portion of the exhaust valve plate and the exhaust hole of the valve plate are dislocated and poor in sealing, and the compressor is seriously leaked inwards to cause failure.
In order to solve the technical problem, the invention provides an air valve assembly which comprises an exhaust valve plate, a valve plate and a limiting plate, wherein a groove is formed in the valve plate, an exhaust port is formed in the groove, the limiting plate is installed in a matched mode with the groove, the exhaust valve plate is tightly pressed in the groove through the limiting plate, a tongue portion of the exhaust valve plate covers the exhaust port to form an opening and closing valve, a grid-shaped pattern structure is arranged at the root of the exhaust valve plate and is formed by arranging a plurality of grid strips at intervals, one or more grid strips of the grid-shaped pattern structure are provided with deformation structures, and the deformation structures are flattened after being in contact with a pressing surface of the limiting plate and extend outwards in the width direction.
As a preferred scheme of the present invention, at least one of the remaining grating strips, except the grating strip near the tongue portion side of the exhaust valve plate, is provided with the deformation structure.
As a preferable scheme of the present invention, the deformation structure is in a convex shape, and the convex shape is arc-shaped, trapezoidal, triangular or wavy.
As a preferable scheme of the invention, two limiting parts which are bilaterally symmetrical are arranged on the groove corresponding to the root of the exhaust valve plate, and the two limiting parts and the end part of the groove form a limiting groove which can prevent the root of the exhaust valve plate from longitudinally and transversely moving.
As the preferable scheme of the invention, an anti-skidding groove is arranged in the limiting groove.
As a preferable scheme of the invention, except the grating strips close to one side of the tongue part of the exhaust valve plate, the rest grating strips are contacted with the anti-skid grooves.
As a preferable aspect of the present invention, a distance from the anti-slip groove to the stopper portion is greater than or equal to 1 mm.
As a preferable scheme of the present invention, the groove bottom planes at the two ends of the groove are higher than the groove bottom plane at the middle of the groove, the exhaust port protrudes from the groove bottom plane at the middle of the groove, and the upper end surface of the exhaust port is flush with the groove bottom planes at the two ends of the groove.
As a preferred scheme of the invention, one end of the limit plate is provided with a concave-convex plate structure, the middle part of the concave-convex plate structure is a concave plate, the outer side of the concave-convex plate structure is a convex plate, the upper surface of the convex plate is higher than the upper surface of the concave plate, the lower surface of the concave plate is lower than the lower surface of the convex plate, and a pressing surface capable of pressing the root of the exhaust valve plate on the limit groove is formed; the limiting plate is equipped with the elasticity card arm in the one end of keeping away from the concave-convex plate structure, the elasticity card arm is located one side limit portion of limiting plate, the opposite side limit portion of limiting plate be equipped with the butt end that the cell wall of recess meets.
In addition, the invention also provides a compressor, which comprises a cylinder body, a cylinder cover and the air valve assembly, wherein the cylinder cover is connected with the cylinder body, and the valve plate is provided with a mounting hole connected with the cylinder cover.
Compared with the prior art, the air valve assembly and the compressor using the same have the advantages that:
according to the air valve assembly, the grid-shaped pattern structure for increasing friction is arranged at the root of the exhaust valve plate, so that the problem of insufficient friction between the root of the exhaust valve plate and a pressing surface of the limiting plate can be effectively solved; meanwhile, a deformation structure is arranged on one or more grid bars of the grid-shaped pattern structure at the root of the exhaust valve, and during assembly, the deformation structure is pressed and flattened after being contacted with the pressing surface of the limiting plate and extends outwards in the width direction of the deformation structure, so that the width size of the root of the exhaust valve plate is increased, and the gap between the root of the exhaust valve plate and the groove in the width direction is just eliminated; therefore, when the compressor runs under severe working conditions and the exhaust valve plate has a transverse moving trend, the exhaust valve plate cannot shake due to the absence of a transverse gap. Therefore, the invention can well solve the problems that the powder valve plate is abraded due to the shaking of the exhaust valve plate, and finally the tongue part of the exhaust valve plate and the exhaust hole of the valve plate are dislocated and have poor sealing, and the compressor is seriously internally leaked and loses efficacy; moreover, the invention has simple and ingenious structure, only needs to change the structure of the root part of the exhaust valve plate, basically keeps the whole structure unchanged, has smaller change amount and low cost.
Drawings
FIG. 1 is an exploded view of a valve assembly according to the present invention;
FIG. 2 is a schematic structural view of an exhaust valve plate;
FIG. 3 is a schematic view of the valve plate;
FIG. 4 is a schematic structural view of the assembled exhaust valve plate and valve plate with the exhaust valve plate in a free state;
FIG. 5 is a schematic structural view of the exhaust valve plate in a flattened state after the exhaust valve plate and the valve plate are assembled;
FIG. 6 is a schematic side structure diagram of a limiting plate;
fig. 7 is a back side structure schematic diagram of the limiting plate;
in the figure: 1. the anti-skid valve comprises an exhaust valve plate, 11, a tongue portion and 12 of the exhaust valve plate, 13, a grid-shaped pattern structure, 14, a deformation structure, 2, a valve plate, 21, a groove, 22, an exhaust port, 23, a boss, 24, a limiting portion, 25, a limiting groove, 26, a mounting hole, 27, an anti-skid groove, 3, a limiting plate, 31, a concave plate, 32, a convex plate, 33, an elastic clamping arm, 34 and a butt end.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "central", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., used herein are used in the orientation or positional relationship indicated in the drawings, which are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be understood that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, either fixedly connected, detachably connected, or integrally connected, unless otherwise explicitly stated or limited; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 5, the preferred embodiment of an air valve assembly provided by the present invention includes an exhaust valve plate 1, a valve plate 2 and a limiting plate 3, wherein the valve plate 2 is provided with a groove 21, an exhaust port 22 is arranged in the groove 21, the limiting plate 3 is installed in cooperation with the groove 21, the limiting plate 3 presses the exhaust valve plate 1 in the groove 21, a tongue portion 11 of the exhaust valve plate 1 covers the exhaust port 22 to form an opening and closing valve, a root portion 12 of the exhaust valve plate 1 is provided with a grid-shaped pattern structure 13, the grid-shaped pattern structure 13 is formed by a plurality of grid bars, one or more grid bars of the grid-shaped pattern structure 13 are provided with a deformation structure 14, and the deformation structure 14 is in contact with a pressing surface of the limiting plate 3 and is flattened and extends outward in a width direction thereof.
Therefore, in the air valve assembly of the embodiment, the grid-shaped pattern structure 13 for increasing friction is arranged at the root part 12 of the exhaust valve plate, and the grid-shaped pattern structure 13 can effectively solve the problem of insufficient friction between the root part 12 of the exhaust valve plate and the pressing surface of the limiting plate 3; meanwhile, the deformation structure 14 is arranged on one or more grid bars of the grid-shaped pattern structure 13 at the root part 12 of the exhaust valve, and during assembly, the deformation structure 14 is pressed and flattened after being contacted with the pressing surface of the limiting plate 3 and extends outwards in the width direction of the limiting plate, so that the width size of the root part 12 of the exhaust valve plate is increased, and the gap between the root part 12 of the exhaust valve plate and the groove 21 in the width direction is just eliminated; therefore, when the compressor runs under the severe working condition and the exhaust valve plate 1 has the transverse movement trend, the exhaust valve plate 1 cannot shake due to no transverse clearance, so that the problems that the powder valve plate 2 is abraded due to the shaking of the exhaust valve plate 1, and finally the exhaust valve plate tongue 11 and the exhaust hole of the valve plate 2 are dislocated and sealed badly, and the compressor is seriously leaked and loses efficacy are solved. Moreover, the air valve assembly of the embodiment has a simple and ingenious structure, only the structure of the root part 12 of the exhaust valve sheet needs to be changed, the whole structure is basically kept unchanged, the change amount is small, and the cost is low.
For example, as shown in fig. 2, at least one of the other grille strips 132 except the grille strip 131 near the tongue portion 11 of the exhaust valve plate 1 is provided with the deformation structure to ensure the normal opening and closing operation of the exhaust valve plate.
Illustratively, as shown in fig. 2, the deformation structure has a convex shape, and the convex shape is arc-shaped, trapezoidal, triangular, wavy or the like, so as to facilitate flattening extension.
For example, as shown in fig. 2 and 3, the root 12 of the exhaust valve sheet 1 is T-shaped, so that two bilaterally symmetrical limiting portions 24 are provided on the boss 23 corresponding to the root 12 of the exhaust valve sheet 1, the two limiting portions 24 and the end of the groove 21 form a T-shaped limiting groove 25, and the limiting groove 25 can prevent the root 12 of the exhaust valve sheet 1 from moving longitudinally and laterally. Further, in order to facilitate the assembly of the exhaust valve plate 1, the root 12 of the exhaust valve plate 1 is in clearance fit with the limiting groove 25, and the deformation structure 14 can be flattened by the limiting plate 3 and then can be extended outwards in the width direction of the deformation structure, so that a larger clearance can be reserved in the fit clearance (indicated as a in fig. 4), and the assembly is facilitated.
For example, as shown in fig. 3, an anti-slip groove 27 is arranged in the limiting groove 25, and is used for increasing friction between the limiting groove and the grid-shaped pattern structure 13 at the root of the exhaust valve plate, so that the problem of insufficient friction at the root of the exhaust valve plate can be effectively solved, and the exhaust valve plate is prevented from transversely shaking.
For example, as shown in fig. 4 and 5, except for the grille strips 131 near the tongue portion 11 side of the air release valve plate 1, the remaining grille strips 132 are all in contact with the anti-slip grooves 27 to avoid interfering with the normal opening and closing operation of the air release valve plate.
For example, in order to further ensure the normal opening and closing operation of the exhaust valve plate, the distance from the anti-slip groove 27 to the limiting part is greater than or equal to 1 mm.
Illustratively, as shown in fig. 3, the groove bottom planes 23 at the two ends of the groove 21 are higher than the groove bottom plane at the middle of the groove 21, and the exhaust port 21 is arranged in the groove bottom plane at the middle of the groove 21. Thus, after the root 12 of the exhaust valve plate 1 is fixed, the tongue portion 11 of the exhaust valve plate 1 is placed above the exhaust port 22 in a cantilever shape, so that the tongue portion 11 of the exhaust valve plate 1 has certain elasticity to be opened and closed on the exhaust port 22, the contact area between the exhaust valve plate 1 and the bottom surface of the groove 21 is reduced, and the end face sealing between the tongue portion 11 of the exhaust valve plate 1 and the exhaust port 22 is facilitated. Further, in order to ensure the sealing performance between the tongue portion 11 of the exhaust valve plate 1 and the exhaust port 22, the exhaust port 22 protrudes out of the groove bottom plane in the middle of the groove 21, and the upper end surface of the exhaust port 22 is flush with the groove bottom planes 23 at the two ends of the groove 21.
For example, as shown in fig. 6 and 7, one end of the limit plate 3 is provided with a concave-convex plate structure, the middle part of the concave-convex plate structure is a concave plate 31, the outer side of the concave-convex plate structure is a convex plate 32, the upper surface of the convex plate 32 is higher than the upper surface of the concave plate 31, and the lower surface of the concave plate 31 is lower than the lower surface of the convex plate 32 and forms a pressing surface capable of pressing the root 12 of the exhaust valve plate 1 on the limit groove 25. Therefore, the outer side of the limiting plate 3 is designed into the convex plate 32, so that the contact area with the cylinder cover is reduced, and the force transmitted to the limiting plate 3 by the cylinder cover is more balanced; the middle part of the limiting plate 3 is designed into the concave plate 31, so that the contact area between the concave plate and the exhaust valve plate 1 is larger, the phenomenon that two sides shake in the stress process of the limiting plate 3 is avoided, and the deformation structures 14 on the root part 12 of the exhaust valve plate can be pressed and flattened by the limiting plate pressing surfaces at the same time.
For example, as shown in fig. 6 and 7, the limiting plate 3 is provided with an elastic clamping arm 33 at one end away from the concave-convex plate structure, the elastic clamping arm 33 is located at one side portion of the limiting plate 3, and the other side portion of the limiting plate 3 is provided with an abutting end 34 connected with the groove wall of the groove 21. When the limit plate 3 is pressed into the groove 21 of the valve plate 2, the abutting end 34 is caught on the groove wall of the groove 21 due to the elastic deformation of the elastic catching arm 33, and the limit plate 3 is fixed.
In addition, the invention also provides a compressor, which comprises a cylinder body, a cylinder cover and the air valve assembly, wherein the cylinder cover is connected with the cylinder body, and the valve plate 2 is provided with a mounting hole 26 connected with the cylinder cover. Since the compressor comprises the air valve assembly, all the advantages of the air valve assembly are achieved, and the description is omitted here.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides an air valve assembly, includes exhaust valve block, valve plate and limiting plate, be equipped with the recess on the valve plate, be equipped with the gas vent in the recess, the limiting plate with the recess cooperation installation, the limiting plate will the exhaust valve block compresses tightly in the recess, the tongue of exhaust valve block covers constitute the valve that opens and shuts on the gas vent, its characterized in that, the root of exhaust valve block is equipped with grid form decorative pattern structure, grid form decorative pattern structure comprises a plurality of grid strip interval arrangement, be equipped with on one or more grid strip of grid form decorative pattern structure and warp the structure with the face contact that compresses tightly of limiting plate is flattened and is outwards extended on its width direction.
2. The air valve assembly as recited in claim 1 wherein the deformation structure is provided on at least one of the remaining grill strips except for the grill strip near the tongue portion side of the vent panel.
3. An air valve assembly as claimed in claim 1 or 2 wherein the deformation means is in the form of a projection, the projection being arcuate, trapezoidal, triangular or undulating.
4. The air valve assembly as claimed in claim 1, wherein the groove corresponding to the root of the air valve plate is provided with two bilaterally symmetrical limiting portions, and the two limiting portions and the end of the groove form a limiting groove capable of preventing the root of the air valve plate from moving longitudinally and transversely.
5. The air valve assembly as recited in claim 4 wherein the retaining groove defines an anti-slip channel.
6. The air valve assembly as recited in claim 5 wherein the grill strips except the grill strip near the tongue portion side of the vent plate are in contact with the anti-slip groove.
7. The air valve assembly as recited in claim 5 wherein the distance from the anti-slip groove to the stop portion is greater than or equal to 1 mm.
8. The air valve assembly as recited in claim 1 wherein the groove bottom planes at the two ends of the groove are higher than the groove bottom plane at the middle of the groove, the air outlet protrudes out of the groove bottom plane at the middle of the groove, and the upper end surface of the air outlet is flush with the groove bottom planes at the two ends of the groove.
9. The air valve assembly as recited in claim 4 wherein one end of the retainer plate is provided with a concave-convex plate structure, the middle part of the concave-convex plate structure is a concave plate, the outer side of the concave-convex plate structure is a convex plate, the upper surface of the convex plate is higher than the upper surface of the concave plate, the lower surface of the concave plate is lower than the lower surface of the convex plate and forms a pressing surface capable of pressing the root of the exhaust valve plate on the retainer groove; the limiting plate is equipped with the elasticity card arm in the one end of keeping away from the concave-convex plate structure, the elasticity card arm is located one side limit portion of limiting plate, the opposite side limit portion of limiting plate be equipped with the butt end that the cell wall of recess meets.
10. A compressor comprising a cylinder block, a cylinder head and an air valve assembly as claimed in any one of claims 1 to 9, wherein the cylinder head is connected to the cylinder block, and the valve plate is provided with a mounting hole connected to the cylinder head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911370795.4A CN110985349B (en) | 2019-12-25 | 2019-12-25 | Air valve assembly and compressor using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911370795.4A CN110985349B (en) | 2019-12-25 | 2019-12-25 | Air valve assembly and compressor using same |
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| Publication Number | Publication Date |
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| CN110985349A true CN110985349A (en) | 2020-04-10 |
| CN110985349B CN110985349B (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911370795.4A Active CN110985349B (en) | 2019-12-25 | 2019-12-25 | Air valve assembly and compressor using same |
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| CN (1) | CN110985349B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114012423A (en) * | 2021-10-21 | 2022-02-08 | 广州万宝特种制冷设备有限公司 | Valve plate assembling machine |
| CN114673651A (en) * | 2022-05-31 | 2022-06-28 | 江苏博特威流体科技有限公司 | Special air valve for compressor |
| CN116424781A (en) * | 2023-06-15 | 2023-07-14 | 山西豪钢重工股份有限公司 | Middle groove and coal return prevention method of scraper conveyor |
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| CN110425116A (en) * | 2019-08-26 | 2019-11-08 | 黄石尼美特科技发展有限公司 | A kind of valve member and compressor for compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114012423A (en) * | 2021-10-21 | 2022-02-08 | 广州万宝特种制冷设备有限公司 | Valve plate assembling machine |
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| CN114673651A (en) * | 2022-05-31 | 2022-06-28 | 江苏博特威流体科技有限公司 | Special air valve for compressor |
| CN116424781A (en) * | 2023-06-15 | 2023-07-14 | 山西豪钢重工股份有限公司 | Middle groove and coal return prevention method of scraper conveyor |
| CN116424781B (en) * | 2023-06-15 | 2023-09-12 | 山西豪钢重工股份有限公司 | Middle groove and coal return prevention method of scraper conveyor |
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| Publication number | Publication date |
|---|---|
| CN110985349B (en) | 2022-02-15 |
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