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Capacity varying type rotary compressor and refrigeration system having the same

A technology of rotary compressor and capacity change, which is applied to rotary piston machinery, rotary piston/swing piston pump components, air conditioning systems, etc., and can solve the problems of reduced efficiency, increased refrigerant flow resistance, and complex piping systems, etc. question

Inactive Publication Date: 2007-12-19
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to this technology, the piping system for bypassing the refrigerant to the outside of the cylinder is complicated, thereby increasing the flow resistance of the refrigerant and lowering the efficiency

Method used

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  • Capacity varying type rotary compressor and refrigeration system having the same
  • Capacity varying type rotary compressor and refrigeration system having the same
  • Capacity varying type rotary compressor and refrigeration system having the same

Examples

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Embodiment Construction

[0027] Referring now in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0028] Fig. 1 shows a refrigerating cycle, which has a variable-capacity compound rotary compressor according to the present invention; Fig. 2 is a longitudinal section view showing a variable-capacity compound rotary compressor according to the present invention; Fig. 3 It is a sectional view along the I-I line of FIG. 2; and FIGS. 4 and 5 are longitudinal sectional views showing the driving (power) mode of the first embodiment of the constraint vane in the compound rotary compressor with variable capacity according to the present invention and energy-saving (saving) mode.

[0029] As shown in Figures 1 and 2, the compound rotary compressor according to the present invention includes: a casing 100, on which a plurality of suction pipelines SP1, SP2 and a discharge pipeline DP are connected; a motor part 200, which Installed on the up...

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PUM

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Abstract

A capacity varying type rotary compressor comprises a casing (100) that maintains a discharge pressure state; a motor (200) installed in the casing (100) and generating a driving force; one or more cylinder assembly (300,400) fixed in the casing (100) and compressing a refirgerant by a rolling piston (340,430) and a vane (350,440), the rolling piston (340,430) eccentrically coupled to a rotation shaft (230) of the motor (200) and performing a linear motion; and a vane restricting unit (500) for restricting the vane (440) separated from the rolling piston (430) or releasing the vane (440) thereby contacting to the rolling piston (430) according to a difference of pressures applied to the vane (440). In the rotary compressor, an entire structure is simplified thereby to minimize precessing assemblies, resulting in reducing aproduction cost and enhancing a productivity. Furthermore, as the vane (440) is restricted by using a pressure difference of the system, a relibility is enhanced. Especially, in case of using a stopper (550), the reliability of the product can be more enhanced.

Description

technical field [0001] The present invention relates to a rotary compressor and a refrigerating system including the compressor, more particularly, to a variable capacity rotary compressor, by forming a closed vane pressure chamber at the rear side of its vane slot and applying pressure to the vane The cavity provides suction and discharge pressure, which is able to support the blades. Background technique [0002] Generally speaking, the air conditioner is used to maintain the indoor temperature at a set value, so as to keep the indoor space in a comfortable state. The air conditioner includes a cooling system. The refrigeration system includes a compressor for compressing refrigerant, a condenser for condensing the refrigerant compressed by the compressor and discharging heat to the outside, and an expansion valve for reducing the pressure of the refrigerant condensed by the condenser , and an evaporator that evaporates the refrigerant passing through the expansion valve...

Claims

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Application Information

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IPC IPC(8): F04C18/356F04C28/00F01C21/08F04C29/00F24F1/00
CPCF04C18/356F04C23/001F04C28/22F04C28/24F04C29/028F04C29/124F04C2210/26F04C2240/40Y10S415/00Y10S417/00
Inventor 卞想明赵承衍洪性才金政勋
Owner LG ELECTRONICS INC
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