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

A control method, device and multi-connection equipment of a low-temperature heating unit

A technology for controlling units and units, applied to mechanical equipment, lighting and heating equipment, and control input involving air characteristics, etc., can solve problems such as poor heating effects of air conditioners, and achieve improved stability, increased temperature, and improved heating efficiency Effect

Active Publication Date: 2020-11-27
GREE ELECTRIC APPLIANCES INC
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the embodiment of the present invention, a control method, device and multi-connection equipment of a low-temperature heating unit are provided to solve the problem of poor heating effect of an air conditioner in a low-temperature environment in the prior art

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
  • A control method, device and multi-connection equipment of a low-temperature heating unit
  • A control method, device and multi-connection equipment of a low-temperature heating unit
  • A control method, device and multi-connection equipment of a low-temperature heating unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Aiming at the problems of poor heating effect and poor compressor reliability of an air-conditioning system in a low-temperature environment, the invention provides a control method for a low-temperature heating unit for improving heating effect and user comfort.

[0034] figure 1 is a flowchart of a control method for a low-temperature heating unit according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0035] Step S101, when the unit is in the heating standby mode, judge whether it meets the low-temperature heating start-up condition according to the outdoor ambient temperature and the standby time;

[0036] Step S102, if yes, control the unit to enter the defrosting mode;

[0037] Step S103, when the unit is running in the defrosting mode, if the unit meets the normal heating start conditions, control the unit to enter the normal heating mode;

[0038] Step S104, if not, directly enter the normal h...

Embodiment 2

[0054] figure 2 is a low-temperature heating control flow chart of an air-conditioning system according to an embodiment of the present invention, such as figure 2 As shown, the process includes the following steps:

[0055] Step 1. When the air conditioning system is in heating standby mode, record the outdoor ambient temperature and standby time of the air conditioning unit;

[0056] Step 2, when it is judged that the average temperature of the outdoor environment ≤ preset low temperature (eg -20°C), and the duration of the average temperature ≤ -20°C > the first preset duration (3h); if yes, execute step 3, if not, Then execute step 12;

[0057] Step 3: When the air conditioning system is turned on, it enters the ultra-low temperature heating start control, and then the unit enters the defrosting mode, controls the switching of the four-way valve, the refrigerant flow direction in the unit is the same as that in the cooling mode, the compressor runs at the highest frequ...

Embodiment 3

[0076] corresponds to figure 1 The control method of the low-temperature heating unit introduced, this embodiment provides a control device for the low-temperature heating unit, such as image 3 The structural block diagram of the control device of the low-temperature heating unit shown, the device includes:

[0077] The low temperature judging module 10 is used to judge whether the low temperature heating startup condition is met according to the outdoor ambient temperature and the standby time when the unit is in the heating standby mode;

[0078] The defrosting control module 20 is used to control the unit to enter the defrosting mode after the unit meets the low-temperature heating start-up conditions;

[0079] The heating control module 30 is used to control the unit to enter the normal heating mode if the unit meets the normal heating start conditions during the defrosting mode of the unit.

[0080] Through this embodiment, for the standby unit in a low-temperature env...

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 control method and device for a low-temperature heating unit and multi-split air conditioner equipment. The method comprises the steps that when the unit is in a heating standby mode, whether the low-temperature heating starting condition is met or not is judged according to the outdoor environment temperature and the standby duration; if the condition is met, the unit iscontrolled to enter a defrosting mode; and when the unit operates the defrosting mode, if the unit conforms to the normal heating starting condition, the unit is controlled to enter the normal heating mode. By means of the method, before the unit standby in the low-temperature environment operates the normal heating mode, the defrosting mode is started, liquid refrigerant in an outdoor heat exchanger is pushed into an indoor unit heat exchanger with high temperature, heat in a room is absorbed, the temperature of system refrigerant is increased, a large amount of the liquid refrigerant is prevented from directly entering a compressor, later, the mode is turned into the normal heating mode, the refrigerant can accelerate circulation, the heating efficiency is improved, and the stability ofthe compressor is improved.

Description

technical field [0001] The invention relates to the field of unit technology, in particular to a control method, device and multi-connection equipment of a low-temperature heating unit. Background technique [0002] Multi-connected air conditioners are mostly installed in public places such as office buildings and shopping malls. Most of these places are used during the day, and the air conditioning system is turned off at night. In the cold winter, the outdoor temperature is lower at night, and the refrigerant in the standby air conditioning system will migrate to the outdoor heat exchanger. This will easily lead to a large amount of liquid refrigerant entering the compressor when the air conditioner starts heating, resulting in liquid shock of the compressor and poor heating effect. [0003] Aiming at the problem of poor heating effect of the air conditioner in the low temperature environment in the prior art, no effective solution has been proposed so far. Contents of ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/67F24F11/42F24F11/61F24F11/64F24F11/84F24F110/12F24F110/10
CPCF24F11/42F24F11/61F24F11/64F24F11/67F24F11/84F24F2110/10F24F2110/12
Inventor 曹勋焦华超张仕强
Owner GREE ELECTRIC APPLIANCES INC