Condensing unit, liquid spraying control method and control device thereof and air conditioner

A technology of condensing unit and control method, which is applied in the direction of evaporator/condenser, refrigerator, refrigeration components, etc., can solve the problems that the liquid injection solenoid valve cannot control the injection amount, the compressor stops, and the compressor is damaged. Wide range of liquid volume control, improved reliability, and extended life

Pending Publication Date: 2022-08-05
GREE ELECTRIC APPLIANCES INC OF ZHUHAI
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During cooling in summer, condensing units on the market often cause the compressor to stop due to the high temperature of the compressor motor
At present, some manufacturers use liquid injection to cool down the compressor, but the liquid injection is only controlled by the liquid injection solenoid valve, and there are only two states: on and off.
The liquid injection sol

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
  • Condensing unit, liquid spraying control method and control device thereof and air conditioner
  • Condensing unit, liquid spraying control method and control device thereof and air conditioner
  • Condensing unit, liquid spraying control method and control device thereof and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1

[0033] like figure 1 As shown, this embodiment provides a condensing unit, including: a compressor 1; a condenser 2; at least two liquid injection branches for cooling the compressor, and the at least two liquid injection branches are connected in parallel to the compressor Between the suction port of the compressor and the outlet of the condenser, each liquid injection branch is provided with at least one regulating valve, which is used to adjust the liquid injection amount for cooling the compressor.

[0034] The condensing unit of this embodiment includes a compressor 1, a condenser 2 and at least two liquid injection branches, and the at least two liquid injection branches are connected in parallel between the suction port of the compressor 1 and the outlet of the condenser 2, and each injection branch At least one regulating valve is arranged on the liquid branch. The condensing unit provided in this embodiment can adopt the control method of double-c...

Example Embodiment

[0035] Embodiment 2

[0036] In Embodiment 1, further, as figure 1 As shown, at least two liquid spraying branches include: a main liquid spraying branch 4, on which a first regulating valve 5 is arranged; an auxiliary liquid spraying branch 6, which is provided with a The second regulating valve 7 . Both the first regulating valve 5 and the second regulating valve 7 are electronic expansion valves.

[0037] The condensing unit provided in this embodiment includes a compressor 1, a condenser 2 and at least two liquid injection branches. The at least two liquid injection branches include a main liquid injection branch 4 and an auxiliary liquid injection branch 6. The main liquid injection branch A first regulating valve 5 is arranged on the channel 4, and a second regulating valve 7 is arranged on the auxiliary liquid injection branch 6. The first regulating valve 5 and the second regulating valve 7 are both used for regulating the amount of liquid spraying. Two regulating va...

Example Embodiment

[0041] Embodiment 3

[0042] figure 2 A schematic flowchart of the liquid injection control method of the condensing unit of the present embodiment is shown. like figure 2 As shown, the control method includes:

[0043] Step 101, after the condensing unit opens the first regulating valve on the main liquid injection branch to spray liquid, obtain the operating parameters of the condensing unit;

[0044] Step 102, determine whether the operating parameters meet the preset conditions; if yes, go to Step 103; if not, return to Step 101;

[0045] Step 103: Control the condensing unit to open the second regulating valve on the auxiliary liquid injection branch to adjust the liquid injection amount together with the first regulating valve.

[0046] In the liquid injection control method of the condensing unit provided in this embodiment, after the condensing unit opens the first regulating valve on the main liquid injection branch for liquid injection, the operating parameters...

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 condensing unit, a liquid spraying control method and device of the condensing unit and an air conditioner. The liquid spraying control method comprises the steps that after the condensing unit starts a first adjusting valve on a main liquid spraying branch to spray liquid, operation parameters of the condensing unit are obtained; judging whether the operation parameters meet preset conditions or not; and when the judgment result is yes, the condensing unit is controlled to open a second adjusting valve on the auxiliary liquid spraying branch to adjust the liquid spraying amount together with the first adjusting valve. According to the liquid spraying control method, the two adjusting valves are used for jointly coordinating to spray liquid, accurate control over the liquid spraying amount of the condensing unit is achieved, compressor shutdown caused by insufficient liquid spraying amount is prevented, and suction liquid carrying caused by excessive liquid spraying amount is prevented; the refrigerating capacity loss caused by too large liquid spraying amount is reduced; and moreover, the liquid spraying amount range is controlled more widely, the adaptability of the unit is improved, and comfortable operation can be maintained under the high-pressure-ratio working condition.

Description

technical field [0001] The invention belongs to the field of condensing units, and in particular relates to a condensing unit and a liquid spray control method thereof, a control device and an air conditioner. Background technique [0002] Compared with common air conditioners, the condensing unit has a lower cooling temperature and a larger operating pressure ratio, so the exhaust temperature is higher. During summer cooling, the condensing units on the market often cause the compressor to stop due to the high temperature of the compressor motor. At present, some manufacturers use liquid injection to cool the compressor, but the liquid injection is only controlled by the liquid injection solenoid valve, which has only two states: on and off. The liquid injection solenoid valve cannot control the liquid injection volume. If the liquid injection volume is insufficient, the temperature of the compressor motor will be too high and the compressor will stop; machine. [0003] ...

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): F25B1/00F25B39/04F25B41/20F25B49/02F24F1/42F24F11/64F24F11/81F24F11/88
CPCF25B1/00F25B39/04F25B41/20F25B49/02F24F1/42F24F11/64F24F11/81F24F11/88Y02B30/70
Inventor 刘家豪戴林君黄春艳
Owner GREE ELECTRIC APPLIANCES INC OF ZHUHAI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap