Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Capacity-control type double-cylinder rotary compressor and control method thereof

A rotary compressor, control technology, applied in the direction of compressors, compressors with reversible cycles, refrigerators, etc., can solve problems such as unsatisfactory actual results, and achieve the effect of high possibility, improving energy efficiency, and preventing efficiency reduction.

Active Publication Date: 2011-04-20
GUANGDONG MEIZHI COMPRESSOR
View PDF0 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the latter two capacity control technologies are independent, and their actual effects are not ideal.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Capacity-control type double-cylinder rotary compressor and control method thereof
  • Capacity-control type double-cylinder rotary compressor and control method thereof
  • Capacity-control type double-cylinder rotary compressor and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] see figure 1 , shows the air conditioning system equipped with the dual-cylinder rotary compressor 1 of the present invention, that is, the cycle diagram when the air conditioner is in heating operation. The internal pressure of the sealed casing 2 of the compressor 1 and the high pressure side corresponding to the discharge pressure, the discharge pipe 3 welded to the upper end are connected to the inlet of the indoor heat exchanger 5 through the four-way switching valve 4 .

[0026] The other end of the indoor heat exchanger 5, that is, the outlet, and the other end of the outdoor heat exchanger 6, that is, the inlet, are provided with a gas-liquid separator 7, and between the gas-liquid separator 7 and the indoor heat exchanger 5 A first decompression pipe 8a is connected between the other ends of the two, and a second decompression pipe 8b and a first one-way valve 18a are connected between the gas-liquid separator 7 and the other end of the outdoor heat exchanger 6...

Embodiment 2

[0065] see Figure 5 , Omit the three-way valve 45 for control in Embodiment 1, if the second suction pipe 14b is directly connected between the four-way switching valve 4 and the outdoor heat exchanger 6, almost the same effect as in Embodiment 1 can be obtained. That is, under heating conditions, the above-mentioned junction pressure is on the low-pressure side, and therefore, it is the second cylinder compression mode. After switching to cooling condition, it becomes the second cylinder non-compression mode. Therefore, in Example 2, the heating capacity is maximized and the cooling capacity is decreased.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a capacity-control type double-cylinder rotary compressor and a control method thereof. The capacity-control type double-cylinder rotary compressor comprises a seal shell, wherein the internal pressure of the seal shell is a high-pressure side pressure, and a motor assembly and a compression assembly connected with the motor assembly are arranged in the shell; the compression assembly comprises a first cylinder, a second cylinder, an intermediate plate, a crankshaft, a first piston, a second piston, a first slip sheet, a second slip sheet, a first slip sheet cavity, a second slip sheet cavity, a main bearing and an auxiliary bearing, wherein the crankshaft is connected with the motor assembly; the first piston and the second piston are connected with the crankshaft to carry out eccentric rotation, and respectively arranged in a first cylinder compression chamber and a second cylinder compression chamber; the first slip sheet cavity and the second slip sheet cavity are respectively used for accommodating the back side end of the slip sheet; the main bearing and the auxiliary bearing are used for supporting the crankshaft; and the double-cylinder rotary compressor is provided with a gas refrigerant injection device which injects gas refrigerants into the second cylinder compression chamber and is also provided with a volume control device which switches the pressure of the second cylinder compression chamber between the high-pressure side pressure and the low-pressure side pressure. The capacity-control type double-cylinder rotary compressor has the advantages that the efficiency is improved effectively, and the EER (energy efficiency ratio) is high.

Description

technical field [0001] The invention relates to a double-cylinder rotary compressor, in particular to a capacity-controlled double-cylinder rotary compressor and a control method thereof. Background technique [0002] Heat pump air conditioners that combine cooling and heating have the fatal problem of insufficient heating capacity when the outdoor temperature is relatively low. However, in the conventional method of increasing the capacity of the compressor to increase the heating capacity, the efficiency of the air conditioner is often deteriorated, and the comfort of the air conditioner is often poor. [0003] The heating and air-conditioning capacity of the heat pump air conditioner with a large indoor-outdoor temperature difference needs to be at least 1.4 times the cooling and air-conditioning capacity. In recent years, methods of improving the heating and air conditioning capabilities of heat pump air conditioners have become widespread by installing rotary compresso...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F04C23/00F25B13/00
Inventor 小津政雄李华明
Owner GUANGDONG MEIZHI COMPRESSOR
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com