CN214464794U - Cylinder seat of compressor - Google Patents

Abstract

The utility model discloses a compressor cylinder block, including cylinder head, cylinder face, cylinder hole and screw hole, the cylinder face includes fitting surface, up end and lower terminal surface, the fitting surface is located the front end of cylinder head and is the plane, the up end sets up in the top of cylinder head, the lower terminal surface sets up in the below of cylinder head, cylinder hole and screw hole set up on the fitting surface, still be equipped with the separation mechanism that is used for cutting off the screw moment and transmits to the cylinder hole on the cylinder head, the setting of separation mechanism can cut off compressor cylinder head screw moment and transmit to the cylinder hole, can solve the problem that compressor cylinder head screw moment transmits to the cylinder hole and arouses the cylinder hole to warp, thereby can reduce compressor refrigerant leakage, reduce the specific volume of breathing in; the refrigerating capacity of the compressor is increased, the shaft power and the mechanical noise are reduced, and the COP of the compressor is increased. When the compressor part is selected separately and assembled, the fit clearance of piston and cylinder hole is 3 ~ 5um, and the compressor refrigerator oil viscosity that adopts is 3# oil or 5# oil.

Description

Cylinder seat of compressor

Technical Field

The utility model belongs to the technical field of the compressor is made, concretely relates to compressor cylinder block.

Background

At present, a cylinder seat of a compressor is mainly made of gray cast iron, in the casting process of the gray cast iron, molten iron flows and is cooled successively, and meanwhile, ferrite and flake graphite exist in the cast iron, so that different parts of the cast iron have certain difference in strength, especially when a cylinder cover screw is fastened, a cylinder head part has certain deformation, and the deformed cylinder seat can cause the change of the roundness and the cylindricity of a cylinder hole of the cylinder seat, influence the fit clearance between a piston and the cylinder hole, and even cause the potential jamming of the compressor; even if the clamping stagnation does not occur, in the actual operation process of a refrigeration system, due to the deformation of the cylinder hole, the change of the fit clearance between the cylinder hole and the piston can lead to the fact that a lubricating oil film cannot seal compressed refrigerant in the cylinder hole to lead to sealing leakage and reduce the refrigeration capacity of the compressor, the change of the fit clearance can lead to the fact that the local fit clearance between the cylinder hole and the piston is small, the reciprocating friction force between the piston and the cylinder hole is increased, the reciprocating friction force is increased to lead to the increase of shaft power, the energy consumption of the compressor is increased, the COP value is reduced, meanwhile, large abnormal mechanical friction noise can be generated after the reciprocating friction force is increased, the noise of the compressor is increased, and the product quality is further reduced.

The cylinder hole of the cylinder seat with the fastening deformation of the screw of the cylinder cover not only has the hidden troubles of clamping stagnation, poor sealing caused by refrigerant leakage and reduction of refrigerating capacity, but also has the hidden troubles of further reduction of COP value and increase of mechanical noise caused by increase of shaft work, thereby bringing great influence to the product quality.

SUMMERY OF THE UTILITY MODEL

To the not enough of existence among the prior art, the utility model aims to provide a compressor cylinder block can resist the problem that compressor cylinder cap screw moment transmitted the cylinder hole and arouse the cylinder hole to warp.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a compressor cylinder block, includes cylinder head, cylinder face, cylinder hole and screw hole, its characterized in that: the cylinder head comprises a matching surface, an upper end surface and a lower end surface, the front end of the matching surface, which is located on the cylinder head, is a plane, the upper end surface is arranged above the cylinder head, the lower end surface is arranged below the cylinder head, the cylinder hole and the screw hole are arranged on the matching surface, and the cylinder head is further provided with a blocking mechanism for blocking the transmission of the torque of the screw to the cylinder hole.

Furthermore, the separation mechanism comprises a separation groove, an oil collecting groove used for collecting cooling liquid and an oil guide hole used for circulation of the cooling liquid, and the oil collecting groove is communicated with the separation groove through the oil guide hole.

Furthermore, separation mechanism includes the axle sleeve, and the axle sleeve is through cold pressing the mode assembly in the cylinder hole, is interference fit between axle sleeve and the cylinder hole, and the hardness and the rigidity of axle sleeve are greater than the hardness and the rigidity in cylinder hole, and the piston in the compressor cooperates with the axle sleeve.

Furthermore, the blocking groove is arranged on the matching surface, the blocking groove is arranged on the periphery of the cylinder hole, the blocking groove is positioned between the cylinder hole and the screw hole, the oil guide holes are arranged in the cylinder head and symmetrically arranged on two sides of the cylinder hole, and the oil collecting groove is arranged on the upper end surface.

Furthermore, the blocking grooves are annular grooves which are symmetrically distributed on two sides of the cylinder hole, each annular groove is of an arc structure, each oil guide hole comprises an upper oil hole and a lower oil hole, one end of each upper oil hole is communicated with the oil collecting groove, the other end of each upper oil hole is communicated with the corresponding annular groove, one end of each lower oil hole is communicated with the corresponding annular groove, and the other end of each lower oil hole is connected with the outside of the cylinder seat.

Further, the distance from the upper oil hole and the lower oil hole to the matching surface is smaller than the depth of the blocking groove.

Furthermore, the upper oil hole and the lower oil hole are arranged in a staggered mode, and the distance from the upper oil hole to the matching surface is smaller than or larger than that of the matching surface of the lower oil hole.

Furthermore, the oil collecting grooves are of a splayed structure, and two oil collecting grooves of the splayed structure are respectively communicated with two upper oil holes distributed on two sides of the cylinder hole; or the oil collecting groove is a strip-shaped groove, and two end parts of the strip-shaped groove are respectively communicated with the two upper oil holes distributed on two sides of the cylinder hole.

Furthermore, a reinforcing rib is arranged on the upper end face of the cylinder head, the oil collecting groove and the oil guide hole are formed in one side of the reinforcing rib, the oil collecting groove is communicated with the oil guide hole, a plurality of oil collecting holes are formed in the other side of the reinforcing rib, and the oil collecting holes penetrate through the reinforcing rib and are communicated with the oil collecting groove.

Furthermore, the separation mechanism comprises an oil collecting groove used for collecting cooling liquid and oil guide holes used for circulation of the cooling liquid, the oil guide holes are through holes penetrating through the upper end face and the lower end face, the oil guide holes are formed in the cylinder head and symmetrically arranged on two sides of the cylinder hole, the oil guide holes are located between the cylinder hole and the screw hole, the oil collecting groove is formed in the middle of the upper end face, and the oil collecting groove is communicated with the oil guide holes.

Adopt the utility model discloses technical scheme's advantage does:

1. the utility model collects the lubricating oil thrown to the upper end surface of the cylinder surface by the crank centrifugal lubrication through the oil collecting groove, the lubricating oil flows to the blocking groove through the two oil guide holes, and then the oil guide hole at the lower part of the blocking groove flows to the lower end surface of the cylinder seat, so that the lubricating oil can take away the heat generated when the piston moves in the cylinder hole, and the temperature of the refrigerant in the cylinder hole can be reduced; and the oil guide hole and the blocking groove are positioned between the cylinder hole and the screw hole, so that the deformation of the cylinder head screw moment to the cylinder hole can be blocked, and the roundness and the cylindricity of the cylinder hole are ensured.

2. The utility model discloses the axle sleeve takes and assembles in the cylinder hole with cylinder hole interference fit's the mode of colding pressing, and the axle sleeve has been processed according to the jar hole precision before colding pressing, and the high rigidity axle sleeve of high strength resists the deformability reinforce, has separated cylinder cap screw moment to the deformation in cylinder hole, has guaranteed the circularity and the cylindricity in axle sleeve cylinder hole.

3. The utility model discloses piston and axle sleeve or piston and cylinder hole fit clearance further dwindle to 3 ~ 5um, and the compressor oil viscosity that adopts is 3# oil or 5# oil, and axle sleeve or cylinder hole size and form and position tolerance precision are high, further reduce the back in the clearance, and the refrigerant leaks and further reduces, and lubricating oil friction input power descends during the piston motion, and the noise descends, and product quality and quality promote greatly.

Drawings

The invention will be described in further detail with reference to the following drawings and detailed description:

FIG. 1 is a schematic structural view of a cylinder block according to a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a cylinder block according to a first embodiment of the present invention;

FIG. 3 is a schematic view of a cylinder block according to a second embodiment of the present invention

FIG. 4 is a schematic cross-sectional view of a cylinder block according to a second embodiment of the present invention;

fig. 5 is a schematic structural view of a cylinder block according to a third embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of a cylinder block according to a third embodiment of the present invention;

fig. 7 is a schematic structural view of a cylinder block according to a fourth embodiment of the present invention;

fig. 8 is a schematic cross-sectional view of a cylinder block according to a fourth embodiment of the present invention;

fig. 9 is a partially enlarged schematic view of a cylinder block according to a fourth embodiment of the present invention;

FIG. 10 is a schematic view of the construction in which the sleeve is fitted in the cylinder bore;

FIG. 11 is a schematic cross-sectional view of a bushing assembled in a cylinder bore.

The labels in the above figures are respectively: 1. a cylinder head; 2. a cylinder face; 21. a mating surface; 22. an upper end surface; 23. a lower end face; 3. a cylinder bore; 4. screw holes; 5. a blocking groove; 6. an oil sump; 7. an oil guide hole; 71. An upper oil hole; 72. a lower oil hole; 8. a shaft sleeve; 9. an oil collecting hole.

Detailed Description

In the present invention, it is to be understood that the term "length"; "Width"; "Up"; "Down"; "front"; "Back"; "left"; "Right"; "vertical"; "horizontal"; "Top"; "bottom" "inner"; "outer"; "clockwise"; "counterclockwise"; "axial"; "planar direction"; the directional or positional relationship indicated as "circumferential" or the like is based on the directional or positional relationship shown in the drawings, and is only for convenience of description and simplified description, and does not indicate or imply that the device or element referred to must have a particular orientation; constructed and operative in a particular orientation and therefore should not be construed as limiting the invention.

As shown in fig. 1 to 11, a cylinder block of a compressor comprises a cylinder head 1, a cylinder surface 2, a cylinder hole 3 and a screw hole 4, and is characterized in that: the cylinder face 2 comprises a matching face 21, an upper end face 22 and a lower end face 23, the matching face 21 is located at the front end of the cylinder head 1 and is a plane, the upper end face 22 is arranged above the cylinder head 1, the lower end face 23 is arranged below the cylinder head 1, the cylinder hole 3 and the screw hole 4 are arranged on the matching face 21, the cylinder head 1 is further provided with a blocking mechanism for blocking the moment of a screw from being transmitted to the cylinder hole 3, the blocking mechanism can block the moment of a screw of a compressor cylinder cover from being transmitted to the cylinder hole, the problem that the cylinder hole is deformed due to the fact that the moment of the screw of the compressor cylinder cover is transmitted to the cylinder hole can be solved, and therefore leakage of a refrigerant of the compressor can be reduced, and specific suction volume can be reduced; the refrigerating capacity of the compressor is increased, the shaft power and the mechanical noise are reduced, and the COP of the compressor is increased. Preferably, when the compressor part is selected separately and assembled, the fit clearance of piston and cylinder hole is 3 ~ 5um, and the compressor refrigerator oil viscosity that adopts is 3# oil or 5# oil.

The blocking mechanism comprises a blocking groove 5, an oil collecting groove 6 for collecting cooling liquid and an oil guide hole 7 for circulation of the cooling liquid, and the oil collecting groove 6 is communicated with the blocking groove 5 through the oil guide hole 7. The blocking groove 5 is arranged on the matching surface 21, the blocking groove 5 is arranged on the periphery of the cylinder hole 3, the blocking groove 5 is positioned between the cylinder hole 3 and the screw hole 4, the oil guide holes 7 are arranged in the cylinder head 1 and symmetrically arranged on two sides of the cylinder hole 3, and the oil collecting groove 6 is arranged on the upper end surface 22.

The blocking groove 5 is an annular groove, the annular groove is symmetrically distributed on two sides of the cylinder hole 3, the annular groove is of an arc structure, the oil guide hole 7 comprises an upper oil hole 71 and a lower oil hole 72, one end of the upper oil hole 71 is communicated with the oil collecting groove 6, the other end of the upper oil hole 71 is communicated with the annular groove, one end of the lower oil hole 72 is communicated with the annular groove, and the other end of the lower oil hole 72 is connected with the outside of the cylinder seat.

Preferably, the ring channel that is located cylinder hole 3 both sides is two third's cyclic annular grooves, and the degree of depth of ring channel is 3 ~ 9mm, and the width is 2 ~ 4 mm: the annular grooves may be cast directly or manufactured by machining. The diameters of the upper oil hole 71 and the lower oil hole 72 are 1.0-3.0 mm.

The distance from the upper oil hole 71 and the lower oil hole 72 to the mating face 21 is smaller than the depth of the barrier groove 5. The upper oil hole 71 and the lower oil hole 72 are arranged in a staggered mode, and the distance from the upper oil hole 71 to the matching surface 21 is smaller than or larger than the distance from the matching surface 21 of the lower oil hole 72.

The upper oil hole 71 and the lower oil hole 72 are arranged in a staggered manner, and the cooling liquid flowing through the upper oil hole 71 and the lower oil hole 72 can take away heat of different depths in the cylinder head 1; because the heat generated when the piston and the cylinder hole work is transferred from inside to outside, the larger the position of the upper oil hole 71 and the lower oil hole 72 which are staggered with each other is, namely the deeper the position of the upper oil hole 71 or the lower oil hole 72 is in the cylinder head 1, the more the heat is taken away by the cooling liquid passing through the upper oil hole 71 or the lower oil hole 72; preferably, the distance from the upper oil hole 71 to the mating surface 21 is generally smaller than the distance from the mating surface 21 of the lower oil hole 72, i.e., the lower oil hole 72 is located deeper in the cylinder head 1, but it is necessary to ensure that the distance from the upper oil hole 71 and the lower oil hole 72 to the mating surface 21 is smaller than the depth of the barrier groove 5, i.e., to ensure that the upper oil hole 71 and the lower oil hole 72 are both communicated with the barrier groove 5.

In order to increase the area of the oil collecting tank 6, the oil collecting tank 6 is designed to be of an eight-shaped structure, the two oil collecting tanks of the eight-shaped structure are respectively communicated with the two upper oil holes 71 distributed on two sides of the cylinder hole 3, the oil collecting tank 6 of the eight-shaped structure has a larger cross section area on the upper end surface 22, more cooling liquid can be collected to pass through the oil guide holes 7, more heat can be taken away by the passing cooling liquid, the cooling effect on the cylinder head is better, and the oil collecting tank 6 of the eight-shaped structure has the functions of flow guiding and cooling.

The oil collecting groove 6 is designed to be a long groove for convenient processing, and two end parts of the long groove are respectively communicated with two upper oil holes 71 distributed on two sides of the cylinder hole 3.

In order to increase the structural strength of the cylinder head 1, the upper end face 22 of the cylinder head 1 is provided with the reinforcing rib 221, the oil collecting groove 6 and the oil guide hole 7 are arranged on one side of the reinforcing rib 221, the oil collecting groove 6 is communicated with the oil guide hole 7, the other side of the reinforcing rib 221 is provided with a plurality of oil collecting holes 9, and the oil collecting holes 9 penetrate through the reinforcing rib 221 and are communicated with the oil collecting groove 6, so that cooling liquid located on the reinforcing rib 221 can be collected in the oil collecting groove 6 and can be cooled through the oil guide hole 7.

The lubricating oil thrown to the upper end surface 22 of the cylinder surface by the crank throw centrifugal lubrication is collected through the oil collecting groove, flows to the annular groove through the two upper oil holes 71 and flows to the lower end surface 23 of the cylinder surface of the cylinder seat through the lower oil hole 72 at the lower part of the annular groove, and the design can play a cooling role on one hand, so that the temperature of the refrigerant sucked into the cylinder hole is reduced, the suction specific volume is reduced, and the suction density is improved; meanwhile, due to the existence of the upper oil hole, the lower oil hole and the annular groove, the influence of the torque of a cylinder cover screw on the deformation of the cylinder hole is blocked, the roundness and the cylindricity of the cylinder hole are ensured, meanwhile, the fit clearance between the piston and the cylinder hole is designed to be further reduced to 3-5 um, and the viscosity of the oil product of the adopted compressor is 3# oil or 5# oil; because piston and cylinder hole fit clearance further reduce, the refrigerant leakage further reduces, and compressor oil viscosity reduces the back simultaneously, and lubricating oil frictional force reduces, and the centrifugal pump oiling volume increases, and the lubricating oil temperature rise descends, and input power descends, and mechanical friction descends, and mechanical noise descends, consequently adopts the technical scheme of the utility model discloses after, the compressor seal strengthens, and input power descends, and the noise descends, and product quality and quality promote greatly.

The utility model discloses an in another embodiment, separation mechanism is including the oil collecting tank 6 that is used for collecting the coolant liquid and the oil guide hole 7 that is used for the coolant liquid circulation, and oil guide hole 7 is the through-hole that runs through up end 22 and lower terminal surface 23, and oil guide hole 7 sets up in cylinder head 1 and the symmetry sets up the both sides in cylinder hole 3, and oil guide hole 7 is located between cylinder hole 3 and screw hole 4, and oil collecting tank 6 sets up at the middle part of up end 22, oil collecting tank 6 and oil guide hole 7 intercommunication. This embodiment is equivalent to transmitting the torque of the blocking screw to the cylinder bore in the interior of the cylinder head 1, and taking away heat from the interior of the cylinder head 1, the cooling effect is better, and the processing is relatively simple. Since the heat generated during operation of the piston and the cylinder bore is transferred from the inside to the outside, the coolant carries away more heat from the interior of the cylinder head.

In another embodiment of the present invention, in order to prevent the screw torque from being transmitted to the cylinder hole to cause the deformation of the cylinder hole, the blocking mechanism includes a shaft sleeve 8, the shaft sleeve 8 is assembled in the cylinder hole 3 by cold pressing, the shaft sleeve 8 and the cylinder hole 3 are in interference fit, the hardness and the rigidity of the shaft sleeve 8 are greater than those of the cylinder hole 3, and the piston in the compressor is matched with the shaft sleeve 8.

Preferably, the shaft sleeve is made of Q235 or alloy steel, and the rigidity, strength and hardness of the shaft sleeve are higher than those of gray cast iron; the thickness of the shaft sleeve 8 is 2.5-5.0 mm; during assembly, the cylinder seat is fixed, the shaft sleeve is supported by the plastic sleeve, the shaft sleeve is cold-pressed, the shaft sleeve and the cylinder seat are in interference fit, and the interference magnitude is 0.04-0.08 mm.

The axle sleeve adopts the mode of colding pressing with cylinder hole interference fit to assemble in the cylinder hole, the axle sleeve of high strength high rigidity, it is strong to resist the deformability, the deformation of cylinder cap screw moment to the cylinder hole has been obstructed, the circularity and the cylindricity in cylinder hole have been guaranteed, piston and axle sleeve fit clearance further dwindle to 3 ~ 5um simultaneously, the compressor oil viscosity that adopts is 3# oil or 5# oil, the size (with) geometric tolerance precision of processed axle sleeve is high, after the clearance further reduces, the refrigerant leaks further to be reduced, lubricating oil frictional force input power descends during the piston motion, the noise descends, product quality and quality promote greatly.

In summary, in the present invention, three ways of blocking the torque of the screw from being transmitted to the cylinder bore may be adopted, and the first way is realized by adopting the structural form of the blocking groove, the oil collecting groove and the oil guiding hole; the second is realized by adopting a mode that a shaft sleeve is in interference fit in a cylinder hole, and a piston is matched with the shaft sleeve; the third is realized by combining the blocking groove, the oil collecting groove, the oil guide hole and the shaft sleeve, namely the third is the combination of the first and the second, and double blocking of screw torque transmission can be realized.

The utility model discloses compressor cylinder block's use does:

(1) when the compressor cylinder works, lubricating oil thrown to the upper end face 22 of the cylinder face by crank centrifugal lubrication is collected through the oil collecting groove, flows to the blocking groove 5 through the two oil guide holes 7, and then flows to the lower end face of the cylinder seat through the oil guide hole at the lower part of the blocking groove 5, so that the lubricating oil can take away heat generated when the piston moves in the cylinder hole, and the temperature of a refrigerant in the cylinder hole can be reduced; and the oil guide hole 7 and the blocking groove 5 are positioned between the cylinder hole and the screw hole, so that the deformation of the cylinder head screw moment to the cylinder hole can be blocked, and the roundness and cylindricity of the cylinder hole are ensured.

(2) Selecting Q235 or alloy steel to manufacture the shaft sleeve 8, and machining the size of the shaft sleeve 8 in place, wherein the thickness of the shaft sleeve is preferably 2.5-5.0 mm; the cylinder seat is fixed, the shaft sleeve is supported by the plastic sleeve, the shaft sleeve is cold-pressed, the shaft sleeve and the cylinder seat are in interference fit, and the interference magnitude is 0.04-0.08 mm.

(3) With the piston assembly in axle sleeve 8 or cylinder hole 3, the fit clearance between piston and axle sleeve 8 or cylinder hole 3 is 3 ~ 5um, the compressor oil viscosity of adoption be 3# oil or 5# oil.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without the technical solutions of the present invention, or the present invention can be directly applied to other occasions without the improvements, and all are within the protection scope of the present invention.

Claims (10)

1. The utility model provides a compressor cylinder block, includes cylinder head (1), cylinder face (2), cylinder bore (3) and screw hole (4), its characterized in that: the cylinder face (2) comprises a matching face (21), an upper end face (22) and a lower end face (23), the front end of the cylinder head (1) located on the matching face (21) is a plane, the upper end face (22) is arranged above the cylinder head (1), the lower end face (23) is arranged below the cylinder head (1), the cylinder hole (3) and the screw hole (4) are arranged on the matching face (21), and a blocking mechanism used for blocking the transmission of the screw torque to the cylinder hole (3) is further arranged on the cylinder head (1).

2. The compressor cylinder block of claim 1, wherein: the blocking mechanism comprises a blocking groove (5), an oil collecting groove (6) used for collecting cooling liquid and an oil guide hole (7) used for circulation of the cooling liquid, and the oil collecting groove (6) is communicated with the blocking groove (5) through the oil guide hole (7).

3. The compressor cylinder block as set forth in claim 2, wherein: the blocking mechanism comprises a shaft sleeve (8), the shaft sleeve (8) is assembled in the air cylinder hole (3) in a cold pressing mode, interference fit is formed between the shaft sleeve (8) and the air cylinder hole (3), the hardness and the rigidity of the shaft sleeve (8) are greater than those of the air cylinder hole (3), and a piston in the compressor is matched with the shaft sleeve (8).

4. A compressor cylinder block according to claim 2 or 3, characterized in that: the oil cylinder is characterized in that the blocking groove (5) is arranged on the matching surface (21), the blocking groove (5) is arranged on the periphery of the air cylinder hole (3), the blocking groove (5) is located between the air cylinder hole (3) and the screw hole (4), the oil guide holes (7) are arranged in the air cylinder head (1) and symmetrically arranged on two sides of the air cylinder hole (3), and the oil collecting groove (6) is arranged on the upper end surface (22).

5. The compressor cylinder block of claim 4, wherein: the oil cylinder is characterized in that the blocking groove (5) is an annular groove, the annular groove is symmetrically distributed on two sides of the cylinder hole (3), the annular groove is of an arc structure, the oil guide hole (7) comprises an upper oil hole (71) and a lower oil hole (72), one end of the upper oil hole (71) is communicated with the oil collecting groove (6), the other end of the upper oil hole (71) is communicated with the annular groove, one end of the lower oil hole (72) is communicated with the annular groove, and the other end of the lower oil hole (72) is connected with the outside of the cylinder seat.

6. The compressor cylinder block of claim 5, wherein: the distance from the upper oil hole (71) and the lower oil hole (72) to the matching surface (21) is smaller than the depth of the blocking groove (5).

7. The compressor cylinder block of claim 6, wherein: the upper oil hole (71) and the lower oil hole (72) are arranged in a staggered mode, and the distance from the upper oil hole (71) to the matching surface (21) is smaller than or larger than the distance from the matching surface (21) of the lower oil hole (72).

8. The compressor cylinder block of claim 5, wherein: the oil collecting tank (6) is of a splayed structure, and two oil collecting tanks of the splayed structure are respectively communicated with two upper oil holes (71) distributed on two sides of the cylinder hole (3); or the oil collecting groove (6) is a strip-shaped groove, and two end parts of the strip-shaped groove are respectively communicated with the two upper oil holes (71) distributed on two sides of the cylinder hole (3).

9. The compressor cylinder block of claim 5, wherein: the cylinder head is characterized in that a reinforcing rib (221) is arranged on the upper end face (22) of the cylinder head (1), an oil collecting groove (6) and an oil guide hole (7) are formed in one side of the reinforcing rib (221), the oil collecting groove (6) is communicated with the oil guide hole (7), a plurality of oil collecting holes (9) are formed in the other side of the reinforcing rib (221), and the oil collecting holes (9) penetrate through the reinforcing rib (221) and are communicated with the oil collecting groove (6).

10. The compressor cylinder block of claim 1, wherein: the separation mechanism comprises an oil collecting tank (6) used for collecting cooling liquid and oil guide holes (7) used for circulation of the cooling liquid, the oil guide holes (7) are through holes penetrating through an upper end face (22) and a lower end face (23), the oil guide holes (7) are formed in the cylinder head (1) and are symmetrically arranged on two sides of the cylinder hole (3), the oil guide holes (7) are located between the cylinder hole (3) and the screw hole (4), the oil collecting tank (6) is arranged in the middle of the upper end face (22), and the oil collecting tank (6) is communicated with the oil guide holes (7).

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