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

Control method of multi-split air conditioning system

A multi-connected air conditioner and control method technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve the problems of inability to realize real-time detection of pipeline systems, leakage, etc., to avoid long-term shutdown, The effect of improving the accuracy of detection and improving maintenance efficiency

Pending Publication Date: 2021-06-11
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +2
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems in the prior art, that is, in order to solve the problem that the existing refrigerant leakage detection schemes have certain hysteresis and cannot realize real-time detection of the entire pipeline system, the present invention provides a multi-connected air conditioner The control method of the system, the multi-connected air-conditioning system includes an outdoor unit and multiple indoor units, and the multiple indoor units are connected to the outdoor unit through a main pipeline. The control method includes: obtaining the actual pressure drop, the actual pressure drop of the outdoor unit, and the actual pressure drop of each of the indoor units; the actual pressure drop of the main pipeline is compared with the theoretical pressure drop of the main pipeline, and the The actual pressure drop is compared with the theoretical pressure drop of the outdoor unit, and the actual pressure drop of each of the indoor units is compared with the respective theoretical pressure drop of each of the indoor units; if the actual pressure drop of the main pipeline greater than the theoretical pressure drop of the main pipe for the set time, or the actual pressure drop of the outdoor unit is greater than the theoretical pressure drop of the outdoor unit for the set time, or the actual pressure drop of any one of the indoor units If the pressure drop is greater than the theoretical pressure drop of the indoor unit and continues for the set time, it is determined that the multi-connected air conditioning system has refrigerant leakage

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
  • Control method of multi-split air conditioning system
  • Control method of multi-split air conditioning system
  • Control method of multi-split air conditioning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[0024] It should be noted that, in the description of the present invention, terms such as "middle", "upper", "lower", "inner", "outer" and other indicated directions or positional relationships are based on the directions or positional relationships shown in the drawings. The positional relationship, which is just for convenience of description, does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0025] In addition, it should be noted that, in the description of the present invention,...

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 belongs to the technical field of air conditioning, and aims to solve the problems that an existing refrigerant leakage detection scheme has certain hysteresis quality, and real-time detection of a whole pipeline system cannot be achieved. The control method comprises the steps that the actual pressure drop of a main pipeline, the actual pressure drop of an outdoor unit and the actual pressure drop of each indoor unit are obtained, and the actual pressure drops are compared with respective theoretical pressure drops; and if the actual pressure drop of the main pipeline is larger than the theoretical pressure drop of the main pipeline and the situation lasts for set time, or the actual pressure drop of the outdoor unit is larger than the theoretical pressure drop of the outdoor unit and the situation lasts for set time, or the actual pressure drop of any indoor unit is larger than the theoretical pressure drop of the indoor unit and the situation lasts for set time, it can be determined that refrigerant leakage happens to the multi-split air conditioning system. According to the control method, the pipeline of the multi-split air conditioning system can be detected in all directions in real time, detection lag is avoided, and the operation safety of the multi-split air conditioning system is improved.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and specifically provides a control method for a multi-connected air conditioning system. Background technique [0002] Air conditioners are air conditioners, which can adjust and control the temperature, humidity and cleanliness of the ambient air in buildings, and provide convenience for people's lives. The air-conditioning system is divided into two categories: comfort air-conditioning and process air-conditioning. Comfortable air conditioners require suitable temperature and comfortable environment, and have no strict requirements on the adjustment accuracy of temperature and humidity. They are widely used in housing, offices and shopping malls, etc.; process air conditioners have certain requirements for temperature adjustment accuracy, and the cleanliness of the air must also be relatively high. Requirements for electronic device production workshops, precision instrument producti...

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 Applications(China)
IPC IPC(8): F24F11/36F24F11/61F24F11/64F24F11/65F24F11/77F24F11/84F24F11/88F24F140/12
CPCF24F11/36F24F11/61F24F11/64F24F11/65F24F11/77F24F11/84F24F11/88F24F2140/12Y02B30/70
Inventor 周林林李旭夏鹏冯维庆毛守博卢大海刘晓凯刘汇泉
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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