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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 in the direction of rotary piston machinery, rotary piston/swing piston pump components, air conditioning systems, etc., and can solve the problems of complex piping system, reduced efficiency, and increased refrigerant flow resistance, etc. question

Inactive Publication Date: 2009-12-02
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] figure 1 shows a refrigeration cycle with a variable capacity compound rotary compressor according to the invention; figure 2 is a longitudinal sectional view showing a variable capacity compound rotary compressor according to the present invention; image 3 is along figure 2 The cross-sectional view of the I-I line; and Figure 4 and 5 It is a longitudinal sectional view showing a power mode and a saving mode of a first embodiment of constraining vanes in the variable capacity compound rotary compressor according to the present invention.

[0029] Such as figure 1 and 2 As shown, 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 is mounted on the casing 100 the up...

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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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Patent Type & Authority Patents(China)
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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