CN211924407U - Cylinder seat of refrigeration compressor - Google Patents

Abstract

The utility model discloses a refrigeration compressor cylinder block, including the base member with be used for the cylinder head of external cylinder annex, the cylinder head is connected with the base member, this cylinder block still includes the wing section piece, the wing section piece is connected on the cylinder head, and the wing section piece be located the base member with between the external cylinder. Because set up the airfoil piece between base member and external cylinder, the fluid that splashes to the cylinder from high-speed moving bent axle can be blockked by the airfoil piece, and the fluid that is blockked flows left and right both sides along airfoil piece bottom to can effectively reduce the fluid volume of splashing cylinder subassembly assembly area and base member, cylinder head joint portion, prevent that oil circulation ability is out of control.

Description

Cylinder seat of refrigeration compressor

Technical Field

The utility model relates to a refrigeration compressor, more specifically says, it relates to a refrigeration compressor cylinder block.

Background

In the field of refrigeration compressors, piston reciprocating compressors are widely used. With the implementation of new energy consumption standards, the power consumption requirements of refrigerators of household appliances are continuously increased, and new requirements are also provided for the energy consumption of the heart-compressor of the refrigerator. As shown in fig. 1, inside the compressor, the cylinder block mainly comprises a base body and a cylinder head, which is one of the main working areas of the cylinder block. In recent years, with the intensive research on the performance of refrigerators, it has been found that the incorporation of too much refrigerant oil into a refrigerant in a refrigeration cycle has a negative effect on energy consumption, and therefore the amount of refrigerant oil incorporated into the refrigerant needs to be controlled to a reasonable level, which is referred to as oil circulation capacity control in the field of compressors. The refrigerant oil usually enters the refrigeration pipeline from the cylinder accessory, and the common path for entering the cylinder accessory is as follows: entering from a piston hole on the cylinder head; entering from the combination part of the base body and the cylinder head; the valve plate and the gasket part enter from the assembling area of the cylinder component. Because there is the piston motion in the piston bore, the oil impregnate between piston pore wall and piston is limited and be favorable to the motion lubrication, therefore the piston hole oil feed need not to prevent. The control difficulty of the base body, the cylinder head joint part and the cylinder assembly assembling area is high, and the base body, the cylinder head joint part and the cylinder assembly assembling area are negative pressure areas, so that the entering of the frozen oil is easier, and the oil inlet at the two positions needs to be inhibited. The improvement method commonly adopted in the industry comprises the following steps: 1. on the premise of ensuring the lubricating capacity, the oil injection amount is reduced; 2. the screw torque is improved, and the sealing performance of the cylinder head and the valve group is improved; 3. an oil guide structure is arranged on the cylinder seat, and part of oil is divided; 4. the oil throwing direction of the crankshaft is controlled, and the splashing direction and the splashing amount of the oil are controlled. The above measures have certain implementation difficulty and contradiction: if the oil filling amount is reduced, the verification process is complex, and the reliability needs to be fully verified. If the screw torque is increased, the deformation of the cylinder hole is aggravated, and abnormal abrasion is caused; if the cylinder seat is provided with the oil guide structure, the finished product rate of the casting is influenced if the cylinder seat and the casting are of an integral structure, and a machined tool clamp is possibly newly designed; if control bent axle gets rid of the oil direction, can realize through pipe or guide pin bushing, but the design degree of difficulty is great. Under the current trends of miniaturization, high efficiency, frequency conversion and low finished product of the compressor, the influence on the existing processing technology and assembly technology is reduced through a simple design, and meanwhile, the oil circulation capacity of the compressor can be effectively improved, so that the compressor becomes a long-term research topic in the compressor industry. The invention with the publication number of CN107965439A is specially favorable for 2018, 4 and 27, and discloses a suction muffler structure capable of improving the circulation volume of compressor oil, which comprises an upper cover, a lower cover, a suction pipe and a suction pipe, wherein the upper cover is hermetically connected with the lower cover, the suction pipe and the suction pipe are respectively arranged on the upper cover and the lower cover, the bottom of the lower cover is provided with an air supplementing hole and a oil dropping hole, the outer part of the oil dropping hole is a funnel-shaped edge, and the bottom of the funnel-shaped edge is provided with an outlet. Lubricating oil attached to the inner wall surface of the muffler can flow downwards under the action of gravity through the oil dropping hole and the funnel-shaped edge, is discharged from the oil dropping hole and returns to the shell of the compressor; the funnel-shaped edge increases the flow resistance of oil mist sucked from the oil dripping hole along with the refrigerant, prevents oil heated in the shell from entering the air suction muffler through the oil dripping hole, prevents the air suction temperature from being overheated, can effectively improve the oil circulation amount of the compressor, and improves the matching performance of the compressor. However, the utility model emphatically solves the problem of oil discharge which enters the position of the suction muffler, and does not relate to the oil inlet control of the base body, the cylinder seat combining part and the cylinder assembly assembling area.

SUMMERY OF THE UTILITY MODEL

The base member, cylinder head joint portion and the cylinder subassembly assembling area of current refrigerator compressor refrigerating oil get into excessively easily, are unfavorable for the energy consumption control of compressor, for overcoming this defect, the utility model provides a base member, cylinder head joint portion and the cylinder subassembly assembling area to the most difficult control effectively improve compressor oil circulation ability, do not cause the refrigeration compressor cylinder block of big influence to current processing technology, assembly process again simultaneously.

The technical scheme of the utility model is that: the cylinder block of the refrigeration compressor comprises a base body and a cylinder head used for being externally connected with a cylinder accessory, wherein the cylinder head is connected with the base body, the cylinder block further comprises an airfoil block, the airfoil block is connected to the cylinder head, and the airfoil block is located between the base body and the externally connected cylinder. Because set up the wing section piece between base member and external cylinder, the fluid that splashes to the cylinder from high-speed moving bent axle can be blockked by the wing section piece, and the fluid that is blockked flows left and right both sides along wing section piece bottom, leaves the cylinder head to can effectively reduce the fluid volume that splashes to cylinder assembly district and base member, cylinder head joint portion, prevent that oil circulation ability is out of control.

Preferably, the cylinder head is provided with an installation groove matched with the wing-shaped block, and the wing-shaped block is embedded in the installation groove. The installation groove is arranged, and the wing-shaped block can be conveniently positioned on the cylinder head to complete the assembly with the cylinder head.

Preferably, the wing-shaped block is in an inverted U shape and comprises an upper stop block and a pair of side stop blocks, and the side stop blocks are positioned on two sides of the upper stop block. The airfoil block in the shape can form a certain shielding area above and at two sides of the cylinder head, so that oil splashed to the cylinder from the crankshaft running at high speed can only pass through a gap between the airfoil block and the inner wall of the cylinder seat, and excessive oil is prevented from entering the cylinder assembly area and then entering the cylinder.

Preferably, the back surface of the airfoil block is symmetrically provided with oblique ribs, and the top surfaces of the oblique ribs are inclined planes. The inclined surface can guide a small amount of oil falling on the top of the airfoil block and flowing downwards along the back surface of the airfoil block to the edge, and the oil falls back to other collecting devices to participate in circulation again.

Preferably, a footing mounting groove is formed in the base body, mounting footings are arranged at the bottom of the wing-shaped block, and the mounting footings are embedded in the footing mounting groove and fixed through screws. The mounting feet are embedded into the mounting grooves of the feet and mounted by screws, so that the wing-shaped block can be accurately positioned and reliably fixed.

Preferably, the upper block and the side block are integrally formed. The wing-shaped blocks are integrally formed, so that the wing-shaped block is convenient to manufacture.

Preferably, the airfoil block is a stamping. And the wing-shaped blocks are punched and formed, so that the rapid mass production is facilitated.

Alternatively, the airfoil block is a machined part. The wing-shaped block is manufactured in a machining mode, and the die sinking cost can be saved.

Alternatively, the airfoil block is an injection molded piece. The wing-shaped block is injection molded, and is convenient for quick mass production.

The utility model has the advantages that:

effectively improves the oil circulation capacity of the compressor. The utility model discloses accessible wing section block shape is formed into and must is sheltered from the region, can effectively reduce the fluid volume that splashes cylinder subassembly assembly area and base member, cylinder head joint portion, prevents that oil circulation ability is out of control.

The method does not greatly influence the existing processing technology and assembling technology. The utility model discloses only need increase limited part on original hardware basis to and increase limited manufacturing procedure, original cylinder block mould, machining equipment all can continue to use, reform transform with low costs moreover.

Drawings

FIG. 1 is an exploded view of a prior art cylinder block of a refrigerant compressor;

fig. 2 is a schematic structural view of the present invention;

fig. 3 is a schematic view of a back structure of the present invention;

FIG. 4 is an exploded view of a component of the present invention;

FIG. 5 is a schematic view of the present invention with the airfoil blocks removed;

FIG. 6 is a schematic view of a front structure of the middle wing block of the present invention;

fig. 7 is a schematic view of a back structure of the middle wing block of the present invention.

In the figure, 1-basal body, 2-cylinder head, 3-mounting groove, 4-footing mounting groove, 5-airfoil block, 6-upper block, 7-side block, 8-oblique rib, 9-mounting footing, 10-piston hole, 11-shaft hole, 12-crankshaft, 13-connecting rod, 14-piston pin, 15-piston, 16-cylinder cover, 17-valve plate, 18-silencer.

Detailed Description

The present invention will be further described with reference to the following detailed description of the embodiments.

Example 1:

as shown in fig. 2 to 7, a cylinder block of a refrigeration compressor comprises a base body 1, a cylinder head 2 for externally connecting cylinder accessories and an airfoil block 5, wherein the cylinder block is integrally enclosed in a shell formed by an upper shell and a lower shell. The base body 1 is high in periphery and low in center, a crankshaft driving shaft enters from a shaft hole 11 in the center of the base body 1, a crankshaft 12 is arranged at the top end of the crankshaft driving shaft, and the crankshaft 12 drives a piston 15 to reciprocate in a piston hole 10 in a cylinder head 2 through a connecting rod 13 and a piston pin 14. The back surface of the cylinder head 2 is connected to cylinder accessories such as a muffler 18 and a cylinder head 16 through a valve plate 17. The cross section of the cylinder head 2 is rectangular, the cylinder head 2 is connected with the base body 1 through a bolt, the wing-shaped block 5 is connected on the cylinder head 2, and the wing-shaped block 5 is positioned between the base body 1 and the external cylinder. Be equipped with the mounting groove 3 with 5 adaptations of wing section piece on the cylinder head 2, wing section piece 5 inlays in mounting groove 3, assembles through mounting groove 3 and cylinder head 2. The wing-shaped block 5 is in an inverted U shape and comprises an upper stop block 6 and a pair of side stop blocks 7, the side stop blocks 7 are positioned on two sides of the upper stop block 6, the upper stop block 6 and the side stop blocks 7 are integrally formed, and the wing-shaped block 5 is a stamping part. The back surface of the airfoil block 5 is symmetrically provided with oblique ribs 8, and the top surfaces of the oblique ribs 8 are inclined planes. Be equipped with footing mounting groove 4 on the base member 1, the wing section piece 5 bottom is equipped with installation footing 9, and installation footing 9 inlays in footing mounting groove 4 and passes through the fix with screw.

When the crankshaft in the cylinder seat of the refrigeration compressor runs at a high speed under the driving of a crankshaft driving shaft, oil splashed from the crankshaft to the cylinder only directly enters the cylinder by a part entering a piston hole 10 on a cylinder head 2, and a small amount of oil passing over an upper baffle block 6 of an airfoil block 5 enters the cylinder from a cylinder assembly area, the rest part can be blocked by the airfoil block 5 and cannot enter the cylinder assembly area, the blocked oil flows to the left side and the right side along the bottom of the airfoil block 5, and the oil automatically converges to the center due to the central and peripheral fall of a matrix 1. A small amount of oil falling on the top of the upper baffle 6 of the airfoil block 5 flows downwards along the back surface of the airfoil block 5, is guided to the edge by the inclined surface of the inclined rib 8, falls back into the shell and participates in circulation again. The airfoil block 5 can effectively reduce the amount of oil splashed to the assembly area of the cylinder assembly and the joint part of the base body 1 and the cylinder head 2, and the oil circulation capacity is prevented from being out of control.

Example 2:

the cross section of the cylinder head 2 is trapezoidal, and the airfoil block 5 is a machined part. The rest is the same as example 1.

Example 3:

the cross section of the cylinder head 2 is semi-elliptical, and the airfoil block 5 is an injection molding piece. The rest is the same as example 1.

Claims (9)

1. The cylinder seat of the refrigeration compressor comprises a base body (1) and a cylinder head (2) used for being externally connected with a cylinder accessory, wherein the cylinder head (2) is connected with the base body, and the cylinder seat is characterized by further comprising an airfoil block (5), the airfoil block (5) is connected to the cylinder head (2), and the airfoil block (5) is located between the base body (1) and the externally connected cylinder.

2. The cylinder block of a refrigeration compressor according to claim 1, characterized in that the cylinder head (2) is provided with a mounting groove (3) adapted to the airfoil block (5), the airfoil block (5) being embedded in the mounting groove (3).

3. Cylinder block of a refrigeration compressor, according to claim 1, characterized in that the aerofoil block (5) has an inverted U shape, comprising an upper stop (6) and a pair of side stops (7), the side stops (7) being located on either side of the upper stop (6).

4. Cylinder block for a refrigeration compressor, according to claim 1, characterized in that the aerofoil block (5) is provided with an oblique rib (8) on its back face, the top face of the oblique rib (8) being bevelled.

5. The cylinder block of the refrigeration compressor as claimed in claim 1, characterized in that the base body (1) is provided with a foot mounting groove (4), the bottom of the airfoil block (5) is provided with a mounting foot (9), and the mounting foot (9) is embedded in the foot mounting groove (4) and fixed by a screw.

6. Cylinder block for refrigeration compressors according to claim 3, characterized in that the upper stop (6) and the side stops (7) are of one-piece construction.

7. Cylinder block for a refrigeration compressor according to one of claims 1 to 6, characterized in that the aerofoil block (5) is a stamped part.

8. Cylinder block for a refrigeration compressor according to one of claims 1 to 6, characterized in that the aerofoil block (5) is machined.

9. Cylinder block for a refrigeration compressor according to one of claims 1 to 6, characterized in that the aerofoil block (5) is an injection-molded piece.

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