Reciprocating compressor

• US 6,875,001 B2
• Filed: 05/24/2001
• Issued: 04/05/2005
• Est. Priority Date: 04/04/2001
• Status: Expired due to Term

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Jin-Dong, Choi, Chang-Gyu, Song, Gye-Young, Choi, Ki-Chul
• Primary Examiner(s): FREAY, CHARLES GRANT
• Application Number:
  US10/297,272
• Publication Number:
  US 20030091449A1
• Time in Patent Office: 1,412 Days
• Field of Search: 417415-418, 417/338, 417/363, 417/495, 417/545, 417/547, 417/552, 417/647, 921/10, 921/13
• US Class Current: 417/417
• CPC Class Codes: F04B 35/045 using solenoids

Abstract

A reciprocating compressor, wherein a flange unit connected to the mover constituting the reciprocating motor is installed on the piston constituting the compressing unit, the distance between the piston flange unit and the front frame of the frame unit is shorter than that of the between the piston flange unit and the reciprocating motor. In the process of being transmitted the linear reciprocal movement driving force of the reciprocating motor and compressing the gas in the compressing unit, the stability of the compressor is raised by preventing the components moving together with the mover of reciprocating motor from impacting with other components by the displacement generated by compression force applying the piston constituting the compressing unit. Also, the size of compressor can be scaled down by compactly constituting the components.

Claims

1. A reciprocating compressor comprising:

a container having a suction pipe in which gas is sucked;

a frame unit having a front frame installed inside the container;

a reciprocating motor installed at the frame unit and generating a linear reciprocating driving force;

a compression unit installed at the frame unit with a certain distance from the reciprocating motor, receiving the driving force of the reciprocating motor and compressing gas;

a spring unit for elastically supporting the linear reciprocating driving force of the reciprocating motor; and

a valve unit installed at the compression unit and opening/closing a compression space in which gas is compressed,

wherein a piston of the compression unit has a flange portion located between the motor and front frame and connected to a mover of the reciprocating motor, and

wherein a distance (k) between a front frame of the frame unit and the flange portion of the piston is smaller than a distance (m) between the reciprocating motor and the flange portion of the piston.

2. The compressor of claim 1, wherein the compression unit has a cylinder and a distance (r) between a discharge valve of the valve unit for opening/closing the compression space of the cylinder and a suction valve combined with the end of the piston for opening and closing a flow channel of the piston is shorter than a distance (k) between the end surface of the supporting portion of the front frame in which the cylinder is inserted and the flange portion of the piston.

3. The compressor of claim 1, wherein a length (h) of a pole portion of a stator of the reciprocating motor is smaller than an added distance ((k)+(m)) of a distance (k) between the flange portion of the piston and the end surface of the supporting portion of the front frame and a distance (m) between the flange portion of the piston and one side of the reciprocating motor.

4. The compressor of claim 1, wherein the certain distance is defined in a moving direction of the reciprocating motor.

5. The compressor of claim 1, wherein the distance (k) between the front frame of the frame unit and the flange portion of the piston is smaller than the distance (m) between the reciprocating motor'"'"'s stator and the flange portion of the piston.

6. A reciprocating compressor comprising:

a container having a suction pipe in which gas is sucked, a frame unit frame installed inside the container;

a reciprocating motor installed at the frame unit and generating a linear reciprocating driving force;

a compression unit installed at the frame unit with a certain distance from the reciprocating motor, receiving the driving force of the reciprocating motor and compressing gas;

a spring unit for elastically supporting the linear reciprocating driving force of the reciprocating motor; and

a valve unit installed at the compression unit opening/closing a compression space in which gas is compressed,

wherein a piston of the compression unit has a flange portion connected to a mover of the reciprocating motor, a distance (k) between a front frame of the frame unit and the flange portion of the piston is smaller then the distance (m) between the reciprocating motor and the flange portion of the piston, and

wherein the compression unit has a cylinder and the front frame includes a supporting portion in which the cylinder of the compression unit is inserted, and a distance (f) between the flange portion of the piston and the end surface of the cylinder inserted into the supporting portion of the front frame is greater than and a distance (k) between the flange portion of the piston and the end surface of the supporting portion of the front frame.

7. A reciprocating compressor comprising:

a container having a suction pipe in which gas is sucked, a frame unit frame installed inside the container;

a reciprocating motor installed at the frame unit and generating a linear reciprocating driving force;

a compression unit installed at the frame unit with a certain distance from the reciprocating motor, receiving the driving force of the reciprocating motor and compressing gas;

a spring unit for elastically supporting the linear reciprocating driving force of the reciprocating motor; and

a valve unit installed at the compression unit and opening/closing a compression space in which the gas is compressed,

wherein a piston of the compression unit has a flange portion connected to a mover of the reciprocating motor, a distance (k) between a front frame of the frame unit and the flange portion of the piston is smaller then the distance (m) between the reciprocating motor and the flange portion of the piston, and

wherein a distance (m) between the flange portion of the piston and one side of the reciprocating motor facing the flange portion is shorter than a distance (p) between the end surface of a mover of the reciprocating motor and a rear frame of the frame unit at which the reciprocating motor is installed.

8. A reciprocating compressor comprising;

a container having a suction pipe in which gas is sucked, a frame unit frame installed inside the container;

a reciprocating motor installed at the frame unit and generating a linear reciprocating driving force;

a compression unit installed at the frame unit with a certain distance from the reciprocating motor, receiving the driving force of the reciprocating motor and compressing gas;

a spring unit for elastically supporting the linear reciprocating driving force of the reciprocating motor; and

a valve unit installed at the compression unit and opening/closing a compression space in which the gas is compressed,

wherein a piston of the compression unit has a flange portion connected to a mover of the reciprocating motor, a distance (k) between a front frame of the frame unit and the flange portion of the piston is smaller then the distance (m) between the reciprocating motor and the flange portion of the piston, and

wherein an open groove at which a wound coil is placed is formed between the pole portions of the stator of the reciprocating motor, and a permanent magnet of the mover of the reciprocating motor is lopsided toward the compression unit on the basis of the center of the open groove.