Unlock instant, AI-driven research and patent intelligence for your innovation.

Refrigeration system and control method thereof

A technology of a refrigeration system and a control method, which is applied to refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as reducing the exhaust temperature of compressors, and achieve the effect of broadening the scope of application operating conditions.

Inactive Publication Date: 2016-04-13
GREE ELECTRIC APPLIANCES INC
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that in the prior art, a pair of gas supplementary enthalpy increase openings on the scroll compressor cannot simultaneously take into account the improvement of heating performance through supplementary gas enthalpy under low temperature conditions and the improvement of heating performance through supplementary gas under ultra-low temperature conditions. Defects of the two requirements of reducing the discharge temperature of the compressor with liquid, thus providing a refrigeration system and its control method

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
  • Refrigeration system and control method thereof
  • Refrigeration system and control method thereof
  • Refrigeration system and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0066] The present invention proposes a refrigeration device, which consists of a scroll compressor 101, a condenser 102, a high-pressure throttling device 103, a flasher 104, a low-pressure throttling device 105, an evaporator 106, and a first gas supply The solenoid valve 107 and the second gas supply solenoid valve 108 are composed of two pairs of gas supply ports on the scroll compressor, wherein the first medium pressure gas supply port 11 and the first medium pressure gas supply port 2 12 are connected with the first medium pressure gas supply port 12. The solenoid valves 107 are connected, and the second medium-pressure air supply port 1 21 and the second medium-pressure air supply port 2 22 are connected with the second air supply solenoid valve 108 .

[0067] Under normal and low temperature working conditions, the first air supply solenoid valve 107 is opened, the second air supply solenoid valve 108 is closed, and the main cycle of the system is: the scroll compresso...

Embodiment approach 2

[0079] Such as Figure 4 As shown, the present invention proposes a refrigeration device, which consists of a scroll compressor 101, a condenser 102, a high-pressure throttling device 103, a supplementary gas branch throttling device 109, an intermediate heat exchanger 110, a low-pressure stage The throttling device 105, the evaporator 106, the first air supply solenoid valve 107 and the second air supply solenoid valve 108, etc., are provided with two pairs of air supply ports on the scroll compressor, wherein the first medium pressure air supply port-11 and The first medium pressure air supply port two 12 is connected to the first air supply solenoid valve 107 , the second medium pressure air supply port one 21 and the second medium pressure air supply port two 22 are connected to the second air supply solenoid valve 108 .

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 provides a refrigeration system. The refrigeration system comprises a scroll compressor (101), a flasher (104) and a high-pressure-stage throttle device (103), wherein the flasher (104) is provided with an exhaust end; the exhaust end is further connected to a second medium-pressure suction end of the compressor through a second air-supplementing branch while being connected to a first medium-pressure suction end of the compressor through a first air-supplementing branch; and the pressures of the first medium-pressure suction end and the second medium-pressure suction end are unequal. The system further comprises a control valve system for controlling at least one of the two air-supplementing branches to be connected or disconnected. According to the invention, the two needs of improving heating performance through air-supplementing enthalpy increasing under a low-temperature condition and lowering an exhaust temperature of the compressor through air-supplementing liquid carrying under an ultra-low-temperature condition, of the refrigeration system can be met simultaneously; and the low-temperature heating capacity, and the running reliability of the ultra-low-temperature working condition of the refrigeration system adopting the scroll compressor are both considered, and the application working condition range of the refrigeration system adopting the scroll compressor is expanded. The invention further relates to a control method for the refrigeration system.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and in particular relates to a refrigeration system and a control method thereof. Background technique [0002] The heating capacity of the air source heat pump decays rapidly as the outdoor ambient temperature drops and cannot meet the needs of users. The existing technology of double-stage or quasi-two-stage compression with air supplementation and enthalpy increase, including two-stage throttling intermediate incomplete cooling and one-stage throttling intermediate incomplete cooling cycle, can increase the low-temperature heating capacity and COP, and at the same time reduce the compressor Exhaust temperature helps somewhat. Figure 1 shows the quasi-two-stage compression system and its lgP-h diagram realized by using a scroll compressor with an air-supplementing enthalpy-increasing port. As designed, once the location of the air supplement enthalpy increase port is determined, its abi...

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): F25B1/04F25B41/04F25B49/02F25B41/20
CPCF25B1/04F25B49/02F25B2309/004F25B41/20
Inventor 郑波梁祥飞庄嵘
Owner GREE ELECTRIC APPLIANCES INC