KR100247800B1 - Method of manufacturing balance weight for an enclosed type compressor - Google Patents

Abstract

The present invention relates to a method for manufacturing a balance weight for a hermetic reciprocating compressor, wherein in preparing a balance weight for a hermetic reciprocating compressor, a base material preparation step (101) of preparing a strip-shaped base material, and after the base material preparation step (101) The second step cutting step of cutting both sides of the part not cut at equal intervals at the same time as the first step cutting step 102a and again the first step cutting step 102a so that the inner and outer diameters are equally spaced in the press. A method of manufacturing a balanced waist of a hermetic reciprocating compressor comprising a cutting step (102b) in which (102b) is made, and a completion step (103) of separating the completed balance weight from the base material after the cutting step (102). By providing a balance weight which is installed to reduce vibration generated by the eccentricity of the crankshaft rotated in the compressor. It relates to a reciprocating hermetic compressor equipment balance weight method to reduce costs by minimizing the scraps (scrap) that are generated much.

Description

A method for manufacturing the balance weight of a bermetic reciprocating compressor.

The present invention relates to a method for manufacturing a balance weight for a hermetic reciprocating compressor, which will be described in more detail in the manufacture of a balance weight is installed in order to reduce the vibration caused by the eccentricity of the crankshaft rotated in the compressor ( The present invention relates to a method for manufacturing a balance weight for a hermetic reciprocating compressor that minimizes scrap.

In general, the compressor compresses the heating medium during the four processes of air conditioning cycle, condensation, expansion, and evaporation, that is, converts the heating medium into a gaseous heating medium of high temperature and high pressure and sends it to the next stage. According to the method, it is divided into volume compression type, that is, reciprocating compressor, screw compressor, rotary compressor, and centrifugal turbo compressor.

The compressor is classified into an open type, a closed type, and a semi-sealed type according to its appearance, and is classified into a water cooling type and an air cooling type by a cooling method, classified into low, medium, and high speed according to the rotational speed, and classified into a short passage and a multi cylinder by the number of cylinders. .

Among the compressors divided into various forms as described above, in the present application, a sealed reciprocating compressor will be described as an example as shown in FIGS. 7 and 8. The electric motor and the compressor are sealed by the upper case 51 and the lower case 52. The inside of the main body frame 55, which is supported by the support bar 54 by the compression spring 53 or the leaf spring for the purpose of proper dustproof and soundproof means is built.

The main body frame 55 is capable of reciprocating the cylinder block 58 and the cylinder 58a therein to the upper end of the crankshaft 57 to which the motor unit 56 having the stator and the rotor are fixed. The piston 59 is installed, and the suction and discharge valve bodies 60 provided at the left end of the cylinder block 58 are installed by the reciprocating motion of the piston 59 to inhale low pressure and low temperature refrigerant gas, High temperature refrigerant gas is discharged.

The suction and discharge valve body 60 is composed of a flapper or reed type thin plate structure which is usually elastic for miniaturization, and the flapper or lead type suction and discharge valve body 60 is double-sided. It is opened and closed passively by the pressure difference acting on.

The sealed reciprocating compressor 50 configured as described above has a suction pipe 61 and a suction muffler fixed to the lower pressure / low temperature refrigerant gas to be sealed to the upper or lower cases 51 and 52 during the backward movement of the piston 59. 62 is introduced into the suction chamber of the discharge muffler 64 from the external evaporator (not shown) to the suction lead valve of the suction and discharge valve body 60, and then flows into the cylinder 58a and the piston 59. During the forward movement of the high-pressure and high-temperature refrigerant gas discharged from the compressor is passed through the discharge muffler 64 from the discharge valve of the suction and discharge valve body 60 to the upper or lower case 51 and 52. It is sent to an external condenser (not shown) via the discharge tube 65 fixedly sealed.

Reference numeral 67 is hermetically fixed to the lower case 52 by the refrigerant filling pipe and initially seals the refrigerant gas after filling the inside.

The noise of the hermetic reciprocating compressor 50 is generated by the reciprocating motion of the piston 59, the opening and closing shock of the suction and discharge valve body 60, the pulsation of the suction gas and the discharge pressure, and the like. In order to reduce noise caused by the pulsation of the suction and discharge pressure, the refrigerant gas introduced into the suction pipe 61 is discharged through the suction muffler 62 while being filled in the upper and lower cases 51 and 52. Refrigerant is sucked into the cylinder 58a through the suction chamber 64a of the cylinder), and the refrigerant compressed in the cylinder 58a is discharged through the first discharge chamber 64b and the second discharge chamber 64c of the discharge muffler 64. It is discharged to the tube 65.

On the other hand, the motor portion 56 is composed of a stator 68 is fixed to the lower portion of the body frame 55 and a rotor 69 that rotates with a gap between the stator 68 (see Fig. 8), This rotor 69 is fixed to the crankshaft 57 and rotatably supported by the body frame 55 to rotate together.

At the end of the crankshaft 57 of the electric motor unit 56, an eccentric shaft 57a is formed to protrude upward from the main body frame 55 so that the piston 59 is the piston rod 59a and the eccentric shaft thereof. By connecting to 57a, the piston 59 reciprocates by the amount of eccentric rotation of the eccentric shaft 57a. In addition, an external power source is applied to the winding coil of the stator 68 of the motor unit 56 by installing external terminals 70 which are hermetically fixed to the upper and lower cases 51 and 52.

In order to smoothly operate the compressor and the driving motor operated as described above, a coolant oil storage tank 52a for storing coolant oil is formed at the bottom of the lower case 52 along the lubricating oil supply groove 57b of the crankshaft 57. While being sucked to the top, the refrigerant oil was supplied to each lubrication part to enable lubrication.

Rotor 69 of the motor unit 56 of the conventional hermetic reciprocating compressor 50 constructed and operated as described above to prevent the eccentricity generated while the rotor 69 rotates, the upper end of one side of the rotor 69 Balance weights 590 are provided at the lower side of the other side as shown in FIG. 8.

In manufacturing the conventional balance weight 590, as shown in FIG. 5, the base material preparation step 501 of preparing a strip-shaped base material and the base material preparation step 501 have an inner diameter so as to have a constant width in the press. It consists of a cutting step 502, the outer diameter is cut differently, and a completion step 503 is completed by separating the balance weight completed from the base material after this cutting step 502.

The balance weight 590 made by the manufacturing process as described above is a balance weight 590 having different inner and outer diameters so as to have a predetermined width in sequential order or at a time by pressing on the band-shaped base material 500 as shown in FIG. 6. ) Is manufactured.

However, in the conventional method manufactured as described above, many scrap portions 500a are generated between the balance weight 590 and the balance weight 590, that is, since the inner diameter and the outer diameter are different from each other, the scrap portion 500a having a constant size is produced. ), The manufacturing cost was raised significantly.

Accordingly, the present invention has been made to solve the problems described above, a scrap (scrap) is a lot generated in manufacturing a balance weight is installed to reduce the vibration caused by the eccentricity of the crank shaft rotated in the compressor The goal is to reduce costs by minimizing them.

In order to achieve the above object, the present invention is to prepare a balance weight for a hermetic reciprocating compressor, the base material preparation step of preparing a belt-shaped base material, and after the base material preparation process at equal intervals so that the inner diameter and the outer diameter in the press are equal. A cutting step in which a first step cutting step and a second step cutting step of cutting both sides of the portion not cut at equal intervals at the same time as the first step cutting step again, and the balance weight completed from the base material after this cutting step Characterized by consisting of a complete process separated by completion.

1 is a block diagram showing the manufacturing fixing of the present invention.

Figure 2 is a schematic plan view showing a one-step cutting process produced by the present invention.

Figure 3 is a schematic plan view showing a two-step cutting process produced by the present invention.

4 is a schematic plan view showing a balance weight produced by the present invention.

Figure 5 is a block diagram showing the manufacturing fixing of the balance weight for a conventional hermetic reciprocating compressor.

6 is a schematic plan view of the balance weight produced by FIG.

7 is a schematic plan view showing a configuration of a hermetic reciprocating compressor generally used.

8 a schematic longitudinal section in accordance with FIG. 7;

Explanation of Signs of Major Parts of Drawings

10,590: balance weight 101: base material preparation process

102: cutting step 102a: first step cutting step

102b: second stage cutting process 103: completion process

500: base material

Hereinafter, the preferred embodiment of the present invention with reference to the accompanying drawings as follows.

Figure 1 is a block diagram showing the manufacturing process of the present invention, a base material preparation step 101 for preparing a strip-shaped base material, and after the base material preparation step 101 to be spaced at equal intervals so that the inner diameter and the outer diameter are the same in the press. A cutting step 102 in which a first step cutting step 102a and a second step cutting step 102b are performed at the same time as the first step cutting step 102a to cut both sides of the portion not cut at equal intervals, and After the cutting step 102 is shown that consisting of the completed step 103 is completed by separating the completed balance weight from the base material.

Figure 2 is a schematic plan view showing a one-step cutting process manufactured by the present invention, the balance weight 10 of the A portion is spaced at equal intervals in the press and the inner diameter and the outer diameter in the press through the base material preparation step (101) The cutting step 102 in which the first step cutting step 102a to be cut is performed is shown.

Figure 3 is a schematic plan view showing a two-step cutting process manufactured by the present invention, by cutting the both ends of the base material 500 is not cut at equal intervals at the same time as the first step cutting process (102a) B The cutting process 102 in which the 2nd step cutting process 102b which cuts the balance weight 10 of a part is performed is shown.

4 is a schematic plan view showing a balance weight manufactured by the present invention, which shows that the balance weight 10 of the present invention is completed through a cutting step 102 and a completion step 103.

The above process will be described in more detail with reference to FIGS. 1 to 4 as follows.

First, after placing the base material 500 which has undergone the base material preparation process 101 for preparing the strip-shaped base material 500 on a press, the inner diameter and the outer diameter are the same and are spaced at equal intervals, that is, the first cut one by one. A second step in which the portion A of FIG. 2 is cut by the step cutting process 102a and the B part of FIG. 3 is cut at both ends of the base material 500 which are not cut apart through the first step cutting process 102a. The cutting step 102b takes place at the same time.

As such, when the cutting step 102 is completed, the manufacturing process is completed as shown in FIG. 4 by the completion step 103 of separating and completing the balance weight 10 completed in the base material 500.

In the cutting step 102, the first step cutting step 102a and the second step cutting step 102b may be made possible so that the inner and outer diameters of the balance weight 10 may be equally cut to engage the balance weight ( The scrap 500a is not formed between the 10 and the balance weight 10 as in the prior art.

As described above, the balance weight 10 may be manufactured at least twice as much as in the conventional substrate 500 having the same area, thereby reducing a lot of cost.

In the manufacturing of the balance weight of the hermetic reciprocating compressor as described above, it is possible to manufacture without forming the scrap generated between the balance weight and the balance weight, thereby reducing the cost increase lost due to the scrap generation It is an invention.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible.

Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.

Claims (1)

In manufacturing a balance weight for a hermetic reciprocating compressor, a step of preparing a base material 101 for preparing a strip-shaped base material and a step 1 spaced at equal intervals so that the inner diameter and the outer diameter are the same in the press after the base material preparing step 101. The cutting process 102 which consists of the cutting process 102a and the 2nd stage cutting process 102b which cuts the both sides of the part which is not cut at equal intervals simultaneously with the said 1st stage cutting process 102a again, and this cutting process (102) The balance waist manufacturing method of the hermetic reciprocating compressor which consists of the completion process (103) completed by separating the completed balance weight from the base material.

Images