阅读说明：本技术 缸头组件、压缩机和制冷装置 (Cylinder head assembly, compressor and refrigerating device ) 是由 陈会平 陈忠华 吴小凌 邱施学 于 2019-09-23 设计创作，主要内容包括：本发明公开了一种缸头组件、压缩机和制冷装置,包括汽缸座,设有缸孔和排气消音腔,汽缸座在缸孔的端部设有环形凸台,环形凸台的端面形成第一安装面,第一安装面上设有第一排气节流通孔,第一排气节流通孔与排气消音腔连通,环形凸台的外圆面与缸孔不同轴,且向第一排气节流通孔所在方向偏置；缸头部件,各缸头部件的边缘均设有凸起,凸起上设有对应第一排气节流通孔的第二排气节流通孔；汽缸盖,设有第一圆柱形安装槽和第二圆柱形安装槽。压缩机包括所述的缸头组件。制冷装置包括所述的压缩机。本发明既具有圆形缸头的小型化、成本低的优点,也避免了传统圆形缸头设计中从汽缸盖排气的工艺难点,节约材料成本。(The invention discloses a cylinder head assembly, a compressor and a refrigerating device, which comprise a cylinder seat, wherein the cylinder seat is provided with a cylinder hole and an exhaust silencing cavity, the end part of the cylinder hole of the cylinder seat is provided with an annular boss, the end surface of the annular boss forms a first mounting surface, the first mounting surface is provided with a first exhaust throttling circulation hole, the first exhaust throttling circulation hole is communicated with the exhaust silencing cavity, the outer circular surface of the annular boss is not coaxial with the cylinder hole and is biased towards the direction of the first exhaust throttling circulation hole; the edge of each cylinder head component is provided with a bulge, and the bulge is provided with a second exhaust throttling through hole corresponding to the first exhaust throttling through hole; and the cylinder cover is provided with a first cylindrical mounting groove and a second cylindrical mounting groove. The compressor comprises the cylinder head assembly. The refrigerating device comprises the compressor. The invention has the advantages of miniaturization and low cost of the circular cylinder head, avoids the process difficulty of exhausting gas from the cylinder cover in the traditional circular cylinder head design and saves the material cost.)

1. A cylinder head assembly characterized by: comprises that

The cylinder base is provided with a cylinder hole and an exhaust silencing cavity, an annular boss is arranged at the end part of the cylinder hole of the cylinder base, a first mounting surface is formed on the end surface of the annular boss, a first exhaust throttling circulation hole is arranged on the first mounting surface and communicated with the exhaust silencing cavity, and the outer circular surface of the annular boss is not coaxial with the cylinder hole and is offset towards the direction of the first exhaust throttling circulation hole;

the cylinder head component comprises an exhaust valve plate, a valve plate and an air suction valve plate, each cylinder head component is circular, the edge of each cylinder head component is provided with a bulge, and the bulge is provided with a second exhaust throttling through hole corresponding to the first exhaust throttling through hole; and

the cylinder cover is connected with the cylinder seat and clamps each cylinder head component between the bottom of the first cylindrical mounting groove and the first mounting surface, the second exhaust throttling through hole is communicated with the first exhaust throttling through hole to form an exhaust passage, and the second cylindrical mounting groove is matched with the outer circular surface of the annular boss.

2. The cylinder head assembly of claim 1, wherein: each of the cylinder head parts is capable of being fitted in the first cylindrical mounting groove and fitted with a cylindrical surface of the first cylindrical mounting groove.

3. The cylinder head assembly of claim 1, wherein: the cylindrical surface of the first cylindrical mounting groove is internally tangent to the cylindrical surface of the second cylindrical mounting groove.

4. The cylinder head assembly of claim 3, wherein: the cylinder cover is provided with a positioning groove matched with the protrusion; positioning columns are arranged on the cylinder cover, and first grooves matched with the positioning columns are formed in the edges of the cylinder head parts; the positioning columns, the first grooves and the internally tangent positions are distributed along the circumferential direction of the first cylindrical mounting groove.

5. The cylinder head assembly of claim 4, wherein: the cylinder cover is provided with a positioning boss, and the cylinder seat is provided with a pit matched with the positioning boss.

6. The cylinder head assembly of claim 5, wherein: the positioning boss is located at the end part of the positioning column.

7. The cylinder head assembly of claim 1, wherein: the cylinder head component further comprises a cylinder cover gasket and a valve plate gasket, the cylinder cover gasket is arranged between the cylinder cover and the exhaust valve plate, and the valve plate gasket is arranged between the suction valve plate and the cylinder seat.

8. The cylinder head assembly of any one of claims 1 to 7, wherein: and a second mounting surface is formed on the outer side of the annular boss on the end surface of the cylinder base, after all the cylinder head parts are clamped, a first gap is reserved between the bottom of the second cylindrical mounting groove and the first mounting surface, and a second gap is reserved between the top of the second cylindrical mounting groove and the second mounting surface.

9. The cylinder head assembly of claim 8, wherein: the first gap and the second gap are not less than 0.1 mm.

10. The cylinder head assembly of claim 1, wherein: the cylinder cover is provided with a plurality of first connecting holes at the peripheries of the first cylindrical mounting groove and the second cylindrical mounting groove, the cylinder seat is provided with second connecting holes corresponding to the first connecting holes, and the cylinder cover is connected with the cylinder seat through a connecting piece penetrating through the first connecting holes and the second connecting holes.

11. The cylinder head assembly of claim 10, wherein: part of the hole wall of at least one first connecting hole bulges towards the inside of the first cylindrical mounting groove, and the edge of each cylinder head part is provided with a second groove matched with the bulged hole wall.

12. The cylinder head assembly of claim 10 or 11, wherein: the cylinder cover is provided with a flange at one end matched with the cylinder seat, and the first connecting hole is formed in the flange.

13. The cylinder head assembly of claim 1, wherein: on the first mounting surface, the first exhaust throttling circulation hole is positioned on a connecting line extension line of the circle center of the outer circle of the annular boss and the circle center of the cylinder hole.

14. The cylinder head assembly of claim 13, wherein: the minimum distance between the first exhaust throttling circulation hole and the outer circular surface of the annular boss is not less than 2mm, and the minimum distance between the first exhaust throttling circulation hole and the cylinder hole is not less than 2 mm.

15. The cylinder head assembly of claim 1, wherein: each cylinder head part is formed by punching a square sheet, and the protrusion of the cylinder head part is positioned at the corner position of the square sheet.

16. The cylinder head assembly of claim 1, wherein: the cylinder cover is provided with an exhaust cavity at the bottom of the first cylindrical mounting groove, and a throttling part and an exhaust valve plate limiting part are arranged in the exhaust cavity.

17. The cylinder head assembly of claim 1, wherein: the cylinder cover is provided with a mounting hole, and the cylinder cover further comprises an air suction silencer, wherein an air outlet end of the air suction silencer is arranged in the mounting hole and is tightly pressed on the cylinder head part through an elastic part.

18. The cylinder head assembly of claim 17, wherein: the elastic part comprises a clamp spring, the clamp spring is formed by bending an elastic sheet, the clamp spring is provided with a first clamp arm, a connecting part and a second clamp arm, the end part of the first clamp arm is reversely turned outwards to form a first clamp wing, the end part of the second clamp arm is reversely turned outwards to form a second clamp wing, a clamp spring mounting groove is formed in the hole wall of the mounting hole, a clamp wing limiting boss is arranged in the clamp spring mounting groove, the clamp spring is embedded into the clamp spring mounting groove and is clamped with the clamp wing limiting boss through the first clamp wing and the second clamp wing, and the connecting part compresses the air suction silencer in the mounting hole.

19. The cylinder head assembly of claim 18, wherein: the connecting part is provided with a bending and pressing part for pressing the air suction silencer.

20. A compressor, characterized by: comprising a cylinder head assembly according to any one of claims 1 to 19.

21. Refrigeration device, its characterized in that: comprising the compressor of claim 20.

Technical Field

The invention is used in the field of compressors, and particularly relates to a cylinder head assembly, a compressor and a refrigerating device.

Background

The cylinder head part of the compressor includes: the cylinder cover comprises a cylinder cover, a cylinder cover gasket, an air suction silencer, a valve plate component, an air suction valve plate, a valve plate gasket, cylinder cover screws and the like, wherein the number of the cylinder cover screws is four. The cylinder cover, the cylinder cover gasket, the valve plate component, the air suction valve plate and the valve plate gasket are in square design in appearance, and cylinder cover screw mounting holes are formed in four corner positions. Correspondingly, threaded holes are provided in the cylinder block panel surface (near the top ends of the cylinder bores), and four cylinder head screws are engaged with the threaded holes to fasten the cylinder head member.

Due to the defects of the square cylinder head part, the prior art generally adopts the round cylinder head part, but the cylinder head part in the prior art still has the following defects:

1. the exhaust system is led out from the cylinder cover, and a separate exhaust silencer is led in, so that the number of parts of the whole structure is large, the process is complex, and the production cost is high;

2. the cylinder head part has the advantages of complex positioning, difficult processing, positioning and assembly, high process cost, long production time, slow beat and easy occurrence of poor displacement in the assembly process;

3. the cylinder head part has poor air tightness and high material cost.

Disclosure of Invention

The invention aims to at least solve one of the technical problems in the prior art, and provides a cylinder head assembly, a compressor and a refrigerating device, which have the advantages of miniaturization and low cost of a circular cylinder head, avoid the process difficulty of exhausting gas from a cylinder cover in the traditional circular cylinder head design and save the material cost.

The technical scheme adopted by the invention for solving the technical problems is as follows:

in a first aspect, a cylinder head assembly, includes

The cylinder base is provided with a cylinder hole and an exhaust silencing cavity, an annular boss is arranged at the end part of the cylinder hole of the cylinder base, a first mounting surface is formed on the end surface of the annular boss, a first exhaust throttling circulation hole is arranged on the first mounting surface and communicated with the exhaust silencing cavity, and the outer circular surface of the annular boss is not coaxial with the cylinder hole and is offset towards the direction of the first exhaust throttling circulation hole;

the cylinder head component comprises an exhaust valve plate, a valve plate and an air suction valve plate, each cylinder head component is circular, the edge of each cylinder head component is provided with a bulge, and the bulge is provided with a second exhaust throttling through hole corresponding to the first exhaust throttling through hole; and

the cylinder cover is connected with the cylinder seat and clamps each cylinder head component between the bottom of the first cylindrical mounting groove and the first mounting surface, the second exhaust throttling through hole is communicated with the first exhaust throttling through hole to form an exhaust passage, and the second cylindrical mounting groove is matched with the outer circular surface of the annular boss.

With reference to the first aspect, in certain implementations of the first aspect, each of the cylinder head components is capable of being fitted in the first cylindrical mounting groove and fitted with a cylindrical surface of the first cylindrical mounting groove.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, a cylindrical surface of the first cylindrical mounting groove and a cylindrical surface of the second cylindrical mounting groove are inscribed.

With reference to the first aspect and the foregoing implementations, in some implementations of the first aspect, a positioning groove is provided on the cylinder head to cooperate with the protrusion; positioning columns are arranged on the cylinder cover, and first grooves matched with the positioning columns are formed in the edges of the cylinder head parts; the positioning columns, the first grooves and the internally tangent positions are distributed along the circumferential direction of the first cylindrical mounting groove.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, a positioning boss is disposed on the cylinder head, and a concave pit matched with the positioning boss is disposed on the cylinder block.

With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, the positioning boss is located at an end of the positioning column.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the cylinder head component further includes a cylinder head gasket and a valve plate gasket, the cylinder head gasket is disposed between a cylinder head and the exhaust valve plate, and the valve plate gasket is disposed between the intake valve plate and the cylinder block.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, a second mounting surface is formed on an end surface of the cylinder block outside the annular boss, after all the cylinder head components are clamped, a first gap is left between the bottom of the second cylindrical mounting groove and the first mounting surface, and a second gap is left between the top of the second cylindrical mounting groove and the second mounting surface.

With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, neither the first gap nor the second gap is less than 0.1 mm.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, a plurality of first connection holes are formed in the peripheries of the first cylindrical mounting groove and the second cylindrical mounting groove on the cylinder head, a second connection hole corresponding to the first connection hole is formed in the cylinder block, and the cylinder head is connected to the cylinder block through a connection piece penetrating through the first connection hole and the second connection hole.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, a part of a hole wall of at least one of the first connection holes bulges towards the inside of the first cylindrical mounting groove, and an edge of each of the cylinder head parts is provided with a second groove matched with the bulged hole wall.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the cylinder head is provided with a flange at an end that is engaged with the cylinder block, and the first connection hole is provided in the flange.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, on the first mounting surface, the first exhaust throttling hole is located on a connecting line extension line of an outer circle center of the annular boss and a cylinder hole center.

With reference to the first aspect and the foregoing implementations, in certain implementations of the first aspect, a minimum distance between the first exhaust throttle hole and an outer circumferential surface of the annular boss is not less than 2mm, and a minimum distance between the first exhaust throttle hole and the cylinder bore is not less than 2 mm.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, each cylinder head part is formed by punching a square sheet, and the protrusion of the cylinder head part is located at a corner of the square sheet.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, an exhaust cavity is formed in the bottom of the first cylindrical mounting groove of the cylinder head, and a throttling component and an exhaust valve plate limiting component are arranged in the exhaust cavity.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, a mounting hole is formed in the cylinder head, and the cylinder head further includes an air suction muffler, wherein an air outlet end of the air suction muffler is disposed in the mounting hole and is pressed against the cylinder head through an elastic component.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the elastic component includes a clamp spring, the clamp spring is formed by bending an elastic sheet, the clamp spring includes a first clamp arm, a connection portion, and a second clamp arm, an end of the first clamp arm is reversely turned over to form a first clamp wing, an end of the second clamp arm is reversely turned over to form a second clamp wing, a clamp spring installation groove is formed in a hole wall of the installation hole, a clamp wing limit boss is arranged in the clamp spring installation groove, the clamp spring is embedded in the clamp spring installation groove and tightly clamped with the clamp wing limit boss through the first clamp wing and the second clamp wing, and the connection portion tightly presses the suction muffler in the installation hole.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the connection portion has a bent pressing portion that presses the suction muffler.

In a second aspect, a compressor includes the cylinder head assembly of any one of the implementations of the first aspect.

In a third aspect, a refrigeration apparatus comprises the compressor of the second aspect.

One of the above technical solutions has at least one of the following advantages or beneficial effects:

1. the cylinder head part is designed in a circular shape, so that the overall size of the cylinder head part is saved, the weight is reduced, and the cost is reduced;

2. the second exhaust throttling through hole on the cylinder head part, the first exhaust throttling through hole of the annular boss and the exhaust silencing cavity on the cylinder seat are communicated to form an exhaust passage, the technical scheme that an exhaust system is guided by a cylinder cover and then introduced into a separate exhaust silencer in the prior art is abandoned, the number of integral structural parts is less, the process is simpler, and the production cost is lower;

3. the outer circular surface of annular boss and jar hole, first cylindrical mounting groove and the cylindrical mounting groove of second all adopt the structural design of disalignment, and it can guarantee that the exhaust passage has good sealed the time, has also saved the material quantity of cylinder seat, cylinder head etc. greatly, greatly reduced manufacturing cost. In addition, the structural style of different shafts also plays the fool-proof function to assembly line operation.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural view of one embodiment of the compressor of the present invention;

FIG. 2 is an exploded view of one embodiment of the compressor cylinder head assembly of the present invention;

FIG. 3 is a schematic view of a cylinder block configuration of one embodiment shown in FIG. 2;

FIG. 4 is a schematic diagram of the outer circular surface of the annular boss of the embodiment shown in FIG. 2 being non-coaxial with the cylinder bore;

FIG. 5 is a schematic view of a cylinder head component of the embodiment shown in FIG. 2 formed from square sheets;

FIG. 6 is a schematic view of the internal structure of the cylinder head of the embodiment shown in FIG. 2;

FIG. 7 is a schematic view of the cylinder head assembly of one embodiment shown in FIG. 2 disposed within a cylinder head;

FIG. 8 is a schematic view of the cylinder head and cylinder block of the embodiment of FIG. 2 after attachment;

FIG. 9 is an enlarged view of a portion of FIG. 8 at A;

FIG. 10 is a schematic view of the cylinder head and mounting hole configuration of one embodiment shown in FIG. 2.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the present invention, if directions (up, down, left, right, front, and rear) are described, it is only for convenience of describing the technical solution of the present invention, and it is not intended or implied that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, it is not to be construed as limiting the present invention.

In the invention, the meaning of "a plurality" is one or more, the meaning of "a plurality" is more than two, and the terms of "more than", "less than", "more than" and the like are understood to exclude the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the present invention, unless otherwise specifically limited, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.

The embodiment of the invention provides a compressor, in particular to a reciprocating compressor, and referring to fig. 1, the reciprocating compressor comprises a cylinder head assembly, a driving assembly 2 and a shell 3, wherein the cylinder head assembly and the driving assembly 2 are both arranged in the shell 3, the shell 3 is provided with an exhaust pipe 31 and an air suction pipe 32, and when the reciprocating compressor works, a working medium is continuously sucked in from the air suction pipe 32 and is exhausted from the exhaust pipe 31 after being compressed. The cylinder head assembly comprises a cylinder seat 1, a cylinder head part 4 and a cylinder cover 5, a cylinder hole 11 is formed in the cylinder seat 1, the driving assembly 2 comprises a motor, a crankshaft, a connecting rod and a piston, the motor drives the crankshaft to rotate during working, an eccentric part of the crankshaft drives the connecting rod to move, the connecting rod drives the piston to reciprocate in the cylinder hole 11 of the cylinder seat 1, and meanwhile, working media are controlled to enter and exit through the cylinder head assembly, and compression of refrigerants is achieved.

Referring to fig. 2 and 3, the cylinder block 1 is provided with a cylinder hole 11 and an exhaust silencing cavity 12, the exhaust silencing cavity 12 is formed on the cylinder block 1 by casting, an annular boss 13 is arranged at the end part of the cylinder hole 11 of the cylinder block 1, a first mounting surface 14 is formed on the end surface of the annular boss 13 and is used for being tightly matched with each cylinder head component 4, a first exhaust throttling circulation hole 15 is arranged on the first mounting surface 14, and the first exhaust throttling circulation hole 15 is communicated with the exhaust silencing cavity 12. The embodiment of the invention replaces an external exhaust silencer by the exhaust silencing cavity 12, and has simple structure and lower process cost.

Referring to fig. 3, the outer circumferential surface of the annular boss 13 is not coaxial with the cylinder hole 11 and is offset towards the direction of the first exhaust throttling hole 15, so that the annular boss 13 has a larger contact surface on the side where the first exhaust throttling hole 15 is located, and is used for being attached to the cylinder head component 4, thereby ensuring sealing and preventing leakage around the first exhaust throttling hole 15 in the exhaust process. Meanwhile, the side of the annular boss 13 far away from the first exhaust throttling hole 15 has narrower thickness, so that the material consumption of the cylinder seat 1 is greatly saved, and the production cost is greatly reduced. Referring to fig. 4, embodiments of the present invention can save the material quota of the diagonally shaded area relative to a coaxial design.

The cylinder head part 4 is used for controlling the flow direction of working media when the compressor works, referring to fig. 2, the cylinder head part 4 comprises an exhaust valve plate 41, a valve plate 42 and an intake valve plate 43, the valve plate 42 is provided with an intake hole and an exhaust hole, the exhaust valve plate 41 is attached to the outer side of the valve plate 42, and the exhaust valve plate 41 is provided with an exhaust valve flap corresponding to the exhaust hole and an intake avoiding hole corresponding to the intake hole. The air suction valve plate 43 is attached to the inner side of the valve plate 42, and the air suction valve plate 43 is provided with an air suction valve flap corresponding to an air suction hole and an exhaust avoiding hole corresponding to an exhaust hole. In some embodiments, the cylinder head part 4 further comprises a cylinder head gasket 40 and a valve plate gasket 47, the cylinder head gasket 40 being arranged between the cylinder head 5 and the exhaust valve plate 41, the valve plate gasket 47 being arranged between the suction valve plate 43 and the cylinder block 1.

Referring to fig. 2 and 5, each cylinder head part 4 is circular, and by adopting a circular design, the overall size of the cylinder head part 4 can be saved, the weight can be reduced, and the cost can be reduced. The edge of each cylinder head part 4 is provided with a protrusion 44, the protrusion 44 is provided with a second exhaust throttling through hole 45 corresponding to the first exhaust throttling through hole 15, each cylinder head part 4 is stacked, and the second exhaust throttling through holes 45 of each cylinder head part 4 are sequentially butted to form a hole channel through which the working medium can flow. The protrusion 44 may be configured to be circular, oval, square, irregular, and the like, and the protrusion 44 can maintain a sufficient sealing width around the second exhaust throttle through hole 45 of each cylinder head part 4, so as to ensure that no leakage occurs around the second exhaust throttle through hole 45 during the exhaust process.

Referring to fig. 2, 6, the cylinder head 5 is provided with a first cylindrical mounting groove 51 and a second cylindrical mounting groove 52, the first cylindrical mounting groove 51 having a smaller diameter than the second cylindrical mounting groove 52, the first cylindrical mounting groove 51 being coaxial with the cylinder bore 11 for clamping each head member 4 at the end of the first cylinder bore 11. The second cylindrical mounting groove 52 is coaxial with the outer circumferential surface of the annular boss 13, and after the cylinder head 5 is connected with the cylinder block 1, the second cylindrical mounting groove 52 is matched with the outer circumferential surface of the annular boss 13 for mounting and positioning. The cylinder head 5 is connected to the cylinder block 1, and each head member 4 is clamped between the bottom of the first cylindrical mounting groove 51 and the first mounting surface 14, and the second exhaust throttle through hole 45 communicates with the first exhaust throttle through hole 15 to form an exhaust passage. The first cylindrical mounting groove 51 and the second cylindrical mounting groove 52 are both designed in a non-coaxial structure, so that the material consumption of the cylinder cover 5 can be greatly reduced, and the production cost is greatly reduced. In addition, the structure forms of different shafts also play a fool-proof function for assembly line operation, the cylinder cover 5 and the cylinder seat 1 are convenient to realize butt joint matching quickly and accurately, the process is simpler, and the production cost is lower.

In some embodiments, referring to fig. 7, each head member 4 can be fitted into the first cylindrical mounting groove 51 and fit with the cylindrical surface of the first cylindrical mounting groove 51. During assembly, the cylinder head gasket 40, the exhaust valve plate 41 and the valve plate 42 are positioned and assembled, namely, the cylindrical outer circles of the cylinder head gasket 40, the exhaust valve plate 41 and the valve plate 42 are directly installed in the cylindrical surface of the first cylindrical installation groove 51 to form radial positioning. Meanwhile, a second cylindrical mounting groove 52 with an offset center is arranged, the air suction valve plate 43 and the valve plate gasket 47 are positioned and assembled, and then the second cylindrical mounting groove 52 and the circular outer wall surface of the annular boss 13 of the cylinder seat 1 are mounted and positioned. After the cylinder head member 4 is assembled, the cylinder head 5 is fastened to the cylinder block 1 by a fastening member such as a screw, and the cylinder hole 11 is sealed. The assembly process is more orderly, and the positioning accuracy is higher.

In order to maximize the material quota saving, referring to fig. 6 and 7, the inner tangent of the cylindrical surface of the first cylindrical mounting groove 51 and the cylindrical surface of the second cylindrical mounting groove 52, i.e. the tangent of the second cylindrical mounting groove 52 and the first cylindrical mounting groove 51, is the most material-saving scheme geometrically. It will be appreciated that the design of the cylindrical surfaces of the first cylindrical mounting groove 51 and the second cylindrical mounting groove 52 in both a coaxial and tangential configuration results in material savings.

In some embodiments, referring to fig. 4, on the first mounting surface 14, the first exhaust throttle hole 15 is located on an extension line of the circle center of the outer circle of the annular boss 13 and the circle center of the cylinder bore 11, and at this time, the first exhaust throttle hole 15 is located at the widest position of the annular boss 13. In order to ensure good contact sealing, the minimum distance of the first exhaust throttle hole 15 from the outer circumferential surface of the annular boss 13 is not less than 2mm, and the minimum distance of the first exhaust throttle hole 15 from the cylinder bore 11 is not less than 2 mm. By maintaining a sufficient sealing width, it is ensured that no leakage occurs around the second exhaust throttle through hole 45 during exhaust.

Further, referring to fig. 7, the cylinder head 5 is provided with a positioning groove 53, the positioning groove 53 is arranged along the depth direction of the first cylindrical mounting groove 51, and the protrusion 44 of the cylinder head part 4 is engaged with the positioning groove 53 to form a first positioning point for positioning the cylinder head part 4; a positioning column 54 is arranged on the cylinder head 5, the positioning column 54 is arranged along the depth direction of the first cylindrical mounting groove 51, referring to fig. 5, a first groove 46 is arranged at the edge of each cylinder head part 4, and the first groove 46 is engaged with the positioning column 54 to form a second positioning point for positioning the cylinder head part 4; the inscribed position of the cylindrical surface of the first cylindrical mounting groove 51 and the cylindrical surface of the second cylindrical mounting groove 52 forms a third positioning point for positioning the cylinder head part 4, and the positioning columns 54, the first grooves 46 and the inscribed position are distributed along the circumferential direction of the first cylindrical mounting groove 51 and are spaced at a certain distance. Through the combined action of the first positioning point, the second positioning point and the third positioning point, the accuracy of mounting and positioning of the cylinder head part 4 is ensured, particularly the mounting and positioning accuracy of the suction valve plate 43 and the valve plate gasket 47 which cannot be positioned by the first cylindrical mounting groove 51 is ensured, and the normal operation of the suction and exhaust functions of the cylinder head part 4 is ensured.

In some embodiments, referring to fig. 3 and 6, a positioning boss 55 is provided on the cylinder head 5, a pit 10 is provided on the cylinder block 1, and after the cylinder head 5 is connected with the cylinder block 1, the positioning boss 55 is embedded in the pit to achieve quick assembly and play a positioning role, wherein the positioning boss 55 has a dome to guide the positioning boss 55 to quickly cooperate with the pit.

Further, the positioning boss 55 can be separated from or abutted against the positioning post 54, for example, in the embodiment shown in fig. 6, the positioning boss 55 is located at the end of the positioning post 54, the positioning boss 55 and the positioning post 54 are located at the same position, which facilitates the design and molding of the molding die of the cylinder head 5, and the positioning boss 55 also provides a guiding function for the cylinder head part 4, so that the cylinder head part 4 can be more conveniently assembled in the first cylindrical mounting groove 51, and a fool-proof function is achieved.

Referring to fig. 3, a second mounting surface 16 is formed on the outer side of the annular boss 13 on the end surface of the cylinder block 1, the second mounting surface 16 is formed by milling, the milling simultaneously forms the circular outer wall surface of the annular boss 13 of the cylinder block 1, the circular outer wall surface of the annular boss 13 is not coaxial with the cylinder hole 11 of the cylinder block 1, and the axis center of the circular outer wall surface is offset to the direction of the first exhaust throttle circulation hole 15.

Referring to fig. 8 and 9, after all the cylinder head parts 4 are clamped, a first gap is left between the bottom of the second cylindrical mounting groove 52 and the first mounting surface, and a second gap is left between the top of the second cylindrical mounting groove 52 and the second mounting surface 16. The first gap and the second gap are not less than 0.1mm, i.e. no direct contact occurs. Therefore, the cylinder head 5 is ensured that only the bottom of the first cylindrical mounting groove 51 is supported by the cylinder head part 4 and the cylinder seat 1, two or more supporting surfaces are avoided, the phenomenon that the multiple supporting surfaces are positioned excessively is avoided, and the single supporting surface can ensure that the cylinder head part 4 obtains enough pressing force and ensures the sealing performance of the cylinder. Even after the cylinder head component 4 is fastened by the moment of the screw of the cylinder head 5 and the cylinder head gasket 40 and the valve plate gasket 47 are compressed and deformed, the phenomenon of over-positioning can be ensured not to occur.

The cylinder cover 5 and the cylinder seat 1 can be connected and locked by screws, bolts, buckles and the like. Referring to fig. 2, 3 and 6, in some embodiments, a plurality of first connection holes 56 are formed in the cylinder head 5 at the peripheries of the first cylindrical mounting groove 51 and the second cylindrical mounting groove 52, a second connection hole 17 corresponding to the first connection hole 56 is formed in the cylinder block 1, and the cylinder head 5 and the cylinder block 1 are connected by a connection member passing through the first connection hole 56 and the second connection hole 17, and the connection member may be a screw or a bolt. After the circular head unit 4 is assembled, the cylinder head 5 is fastened to the cylinder block 1 by a plurality of connecting members, and the cylinder hole 11 is sealed. The connecting pieces are distributed on the periphery of the cylinder cover 5, so that more uniform pressing force can be provided for the cylinder head part 4, the sealing effect is better, and working medium leakage is avoided.

Further, in some embodiments, referring to fig. 7, a part of the hole wall of at least one first connection hole 56 is raised toward the inside of the first cylindrical mounting groove 51, and the edge of each cylinder head part 4 is provided with a second groove 48 matched with the raised hole wall, that is, the second groove 48 of the cylinder head part 4 is engaged with the raised hole wall to form a fourth positioning point. The accuracy of the installation and the positioning of the cylinder head part 4 is ensured through the combined action of the first positioning point, the second positioning point, the third positioning point and the fourth positioning point, particularly the accuracy of the installation and the positioning of the air suction valve plate 43 and the valve plate gasket 47 which cannot be positioned by the first cylindrical mounting groove 51 is ensured, and the normal operation of the air suction and exhaust functions of the cylinder head part 4 is ensured.

The cylinder head 5 is provided with a flange 57 at one end that engages with the cylinder block 1, and the first connection hole 56 is provided in the flange 57. The cylinder head 4 is embedded in a cylindrical mounting groove of the cylinder head 5, and the cylinder head 5 connecting piece is wholly positioned outside the circular contour of the cylinder head 4. The peripheral structure of the first connecting hole 56 of the cylinder cover 5 is designed to be reinforced, and the cylinder head part 4 is pressed by transferring the acting force of the connecting piece of the cylinder cover 5 to the bottom of the first cylindrical mounting groove 51 of the cylinder cover 5, so that the cylinder head part 4 and the screw of the cylinder cover 5 for fixing the cylinder cover 5 are not in direct cumulative relation in the thickness direction. The thickness of the material of the cylinder head 5 between the screws of the cylinder head 5 and the head gasket 40 can be smaller. The head of the screw of the cylinder head 5 can thus be at a smaller distance from the first plate surface of the cylinder block 1. The safety distance between the screw head of the cylinder cover 5 and the shell is more than or equal to 4mm, the screw head of the cylinder cover 5 is closer to the first plate surface of the cylinder seat 1, the size of the compressor in the long axis direction (namely the axis direction of the cylinder hole 11) is smaller, the structure of the compressor is more compact, and the cost is lower.

Referring to fig. 5, the provision of the head part 4 with the projections 44 does not increase the material usage quota, i.e. does not create a real investment cost in the production process. Since the head member 4 is produced by punching from a single sheet, the process rating is determined by the smallest square area corresponding to the projected contour. The boss 44 of the embodiment of the present invention, because of having a sufficiently small outer dimension, is located at the corner position of the square sheet material, and does not add an extra material quota, reducing the production cost.

Referring to fig. 6, the cylinder head 5 is provided with an exhaust chamber 58 at the bottom of the first cylindrical mounting groove 51, and the exhaust chamber 58 is used for guiding the working medium discharged through the cylinder head part 4 into the second exhaust throttling through hole 45. The exhaust cavity 58 is internally provided with a throttling component 59, the throttling component 59 comprises a baffle plate which is obliquely arranged, and the throttling component 59 can reduce the through-flow path of the working medium and reduce the exhaust pulsation of the working medium. An exhaust valve plate limiting part 510 is arranged in the exhaust cavity 58, and the exhaust valve plate limiting part 510 can limit the stroke of the exhaust valve plate.

In some embodiments, referring to fig. 2, 6 and 10, the cylinder head 5 is provided with a mounting hole 511, the wall of the mounting hole 511 separates the exhaust chamber 58, and further comprises a suction muffler 6, the air outlet end of the suction muffler 6 is arranged in the mounting hole 511 and is pressed on the cylinder head part 4 through an elastic part 7, and when the compressor is in operation, working medium enters the suction muffler 6 from the suction pipe 32, and enters the cylinder hole 11 after sound attenuation and noise reduction. The elastic part 7 can compress the air suction silencer 6 on the cylinder head part 4, and meanwhile, the air suction silencer 6 can be tightly attached to the cylinder head part 4 under the vibration working condition, so that working medium leakage is avoided.

Referring to fig. 2, the air outlet end of the air suction muffler 6 is provided with a limiting block 61, a limiting groove 514 is formed in the cylinder cover, and after the air suction muffler 6 is assembled, the limiting block 61 is embedded into the limiting groove to achieve positioning.

Wherein, the elastic component 7 can adopt a pressure spring, a clamp spring, an elastic pad and the like, referring to fig. 2, in some embodiments, the elastic component 7 comprises a clamp spring which is formed by bending an elastic sheet, the clamp spring is provided with a first clamp arm 71, a connecting part 72 and a second clamp arm 73, the first clamp arm 71, the connecting part 72 and the second clamp arm 73 are in a shape similar to an M, and the connecting part 72 is provided with a bending pressing part for pressing the suction muffler 6. The end part of the first clamp arm 71 is reversely turned outwards to form a first clamp wing 74, the end part of the second clamp arm 73 is reversely turned outwards to form a second clamp wing 75, two clamp spring installation grooves 512 are formed in the hole wall of the installation hole 511, the two clamp spring installation grooves 512 are arranged oppositely, and a clamp wing limiting boss 513 is arranged in each clamp spring installation groove 512. During assembly, the air outlet end of the air suction silencer 6 is embedded into the mounting hole 511, the clamp spring is embedded into the clamp spring mounting groove 512, the first clamp wing 74 and the second clamp wing 75 pass through the clamp wing limiting boss 513 and are clamped with the clamp wing limiting boss 513, and the connecting part 72 compresses the air suction silencer 6 in the mounting hole 511.

Embodiments of the present invention also provide a refrigeration device, including the compressor in any of the above embodiments. The structural features and advantages of the compressor have been described in detail above and will not be described in detail.

The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.