Rotary compressor inspiration structure

A rotary compressor and compressor technology, applied in the field of compressors, can solve the problems of affecting the performance of the compressor, reducing the volumetric efficiency of the compressor, and insufficient suction of the lower cylinder

Active Publication Date: 2012-10-24
GREE ELECTRIC APPLIANCES INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The cost of the single-suction compressor of this patent product is lower than that of the double-suction compressor, and the manufacturability is better, but the existing single-suction rotary compressor usually suffers from insufficient suction in the lower cylinder
Especially when the frequency conversion compressor is at high frequency, this phenomenon is more obvious, which will lead to insufficient cooling capacity of the compressor at high frequency, and also reduce the volumetric efficiency of the compressor, affecting the performance of the compressor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A rotary compressor suction structure, such as Figure 14 As shown, it includes a motor 1, a compressor body 2 and a suction pipe assembly 3 connected to the compressor body. The minimum diameter of the air intake hole corresponding to the suction pipe assembly in the compressor body 2 is d, and the nominal value of the rotary compressor is The working volume is set as V(cm 3 ), the cooling capacity per unit mass of the rotary compressor is set to q(J / kg), the motor speed is n(r / min), and the specific volume of the refrigerant under the national standard test conditions is v; then the theoretical exhaust gas per second Quantity V 总 For: V 总 =n·V / 60(cm 3 / s); the corresponding mass flow rate is: Then the cooling capacity Q per second is theoretically: The minimum diameter of the air intake hole in the compressor body is d (mm) (d is actually the smallest inner diameter of the entire suction channel from the inner tube of the liquid separator to the double-cylinder...

Embodiment 2

[0059] Such as Figure 3 to Figure 11 , Figure 13 to Figure 14 As shown, on the basis of Embodiment 1, in addition to satisfying the minimum diameter of the air inlet In addition, in this embodiment, the compressor body 2 is a two-cylinder rotary compressor, the suction pipe assembly 3 includes a suction pipe 30 and a liquid separator 31 connected thereto; the compressor body 2 includes a crankshaft 20, an upper flange 21 , the lower flange 22, the first cylinder 23, the second cylinder 24 and the partition 25 arranged between the first and second cylinders, the crankshaft 20 is installed on the motor 1, the lower flange 22 is arranged at the end of the crankshaft 20, and the upper The flange 21 is installed on the crankshaft 20 at the lower end of the motor 1; when the first cylinder 23 is the upper cylinder, the corresponding second cylinder 24 is the lower cylinder; when the first cylinder 23 is the lower cylinder, the corresponding second cylinder 24 is the upper cylind...

Embodiment 3

[0061] Such as Figure 3 to Figure 11 , Figure 13 to Figure 14 As shown, in addition to meeting the basic requirements in Embodiment 2, in this embodiment, the second cylinder 24 (lower cylinder) directly communicates with the minimum diameter d2 of the suction groove of the compression chamber and the first cylinder 23 (upper cylinder) directly communicates with the first cylinder 23 (upper cylinder) to compress The ratio of the minimum diameter d1 of the suction hole of the cavity has a significant impact on the increase rate of the cooling and heating capacity of the compressor. As shown in Table 3, the single-suction double-cylinder inverter compressor selected by the testing machine has a displacement of 42.8, the second cylinder 24 is the lower cylinder, and the minimum suction diameter d2 of the second cylinder 24 directly connected to the compression chamber is 14mm. Change; the first cylinder 23 is the upper cylinder, change the size of the minimum diameter d1 of th...

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Abstract

The invention discloses a rotary compressor inspiration structure. The structure comprises a motor, a compressor body, and an inspiration tube assembly connected to the compressor body, wherein the minimum diameter of air inlets corresponding with the inspiration tube assembly and in the compressor body is d, the apparent work volume of the rotary compressor is set as V, the refrigerating capacity of a unit mass refrigerant in the rotary compressor is set as q, the rotation speed of the motor is n, and the specific volume of the refrigerant under a Chinese standard test condition is v; and for any refrigerant, the minimum diameter of the air inlets in the compressor body under Chinese standards satisfies a case that units of d, V, q, n and v are mm, cm<3>, J / kg, r / min and m<3> / kg respectively.

Description

【Technical field】 [0001] The invention relates to compressor technology, in particular to a rotary compressor suction structure. 【Background technique】 [0002] At present, rotary compressors are generally divided into single-cylinder rotary compressors and double-cylinder rotary compressors. The selection of the diameter of the inlet hole of the two is often only based on empirical calculations, and there is a lack of quantitative calculation of the diameter of the inlet hole based on theory. The basis for the design is also unable to effectively control the flow rate, volumetric efficiency, noise, etc. in the working process according to the theoretical design; in particular, the double-cylinder rotary compressor is divided into two types: single suction and double suction The design of the stomata diameter is more complicated. Such as figure 1 and figure 2 As shown, the communication hole on the upper cylinder, the communication hole on the partition plate, and the su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C29/12
Inventor 刘达炜黎法运李旺宏高永红吴惠芸
Owner GREE ELECTRIC APPLIANCES INC
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