Assembling method of compressor with piston driven by gear mechanism

Abstract

The invention discloses an assembling method of a compressor with a piston driven by a gear mechanism. A main transmission gear (4) fixedly connected with a motor main shaft (10) is arranged at the end of the motor main shaft (10), and the main transmission gear (4) is a cylindrical outer gear; the main transmission gear (4) meshes with an inner gear; the inner gear is connected with the piston (6) through a connecting rod (11); and the connecting rod (11) and the inner gear are fixedly connected into a whole. With adoption of the technical scheme, vibration and noise of the compressor are reduced; the oil discharge amount of lubricating oil is small, and meanwhile, the refrigeration efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of refrigeration compressor structure. More specifically, the present invention relates to a method of assembling a compressor having a gear mechanism driving a piston. Background technique [0002] The traditional refrigerator freezer compressor uses a crank connecting rod mechanism to achieve reciprocating motion to achieve the suction and exhaust process of the compressor; [0003] Such as figure 1 As shown, the crank-link mechanism of the prior art includes crankshaft main shaft 10, connecting rod 11, piston 6 and piston pin, and utilizes the rotary motion of crankshaft main shaft 10 to drive the connecting rod 11 and piston pin to realize the reciprocating motion of piston 6 to form compression The suction and exhaust of the machine; because the speed of the compressor is constant, once the eccentricity of the cylinder bore and the crankshaft is constant, the displacement will be inconvenient to adjus...

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Problems solved by technology

[0003] like figure 1 As shown, the crank-link mechanism of the prior art includes crankshaft main shaft 10, connecting rod 11, piston 6 and piston pin, and utilizes the rotary motion of crankshaft main shaft 10 to drive the connecting rod 11 and piston pin to realize the reciprocating motion of piston 6 to form compression The suction and exhaust of the machine; because the speed of the compressor is constant, once the eccentricity of the cylinder bore and the crankshaft is constant, the displacement will be inconvenient to adjust; in addition, because the crank connecting rod mechanism will produce rotary motion and reciprocating motion during high-speed motion, it will definitely Rotational inertial force and reciprocating inertial force are generated. When the balance weight 12 is added for counterweight, a part of the unbalanced force increases from the reciprocating movement direction to the horizontal direction. At the same time, the second-order reciprocating inertial force cannot be balanced, because the reciprocating inertial force cannot be completely balanced. And cause the compressor to vibrate; and vibration is the root of all noise, so the vibration causes the noise of the compressor to increase

[0004] In addition, if figure 1 As shown, in the prior art, in order to assemble the piston pin, a process structure cylinder block crescent groove 8 needs to be processed on the cylinder block. The setting of this groove is purely to make room for the assembly of the piston pin. At 7-8mm, different crankshaft eccentricities generally have different crescent groove depths. The smaller the crankshaft eccentricity, the deeper the crescent groove 8 of the cylinder block; but after the cylinder block crescent groove 8 is processed, due to the splash lubrication of the compressor, some Refrigerator oil enters from the crescent groove, which increases the risk of oil discharge from the compressor; on the other hand, due to the reduction of the sealing section of the cylinder head and the risk of oil entering the refrigerant from the refrigerator oil, the cooling capacity of the compressor decreases and the oil discharge increases

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