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

Control method, device and system for chiller

A chiller and controller technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve problems such as low load rate, low condensing pressure, and chillers not working properly.

Active Publication Date: 2022-07-12
丁一 +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the semi-free cooling mode, in order to make the plate heat exchanger contribute more load, it is necessary to reduce the water temperature of the lower tower of the cooling tower, but too low water temperature of the lower tower will not only reduce the load rate of the chiller to the minimum load rate, but also It will reduce the temperature of the water flowing into the condenser of the chiller to its limit value, which will cause the condensing pressure to be too low and prevent the chiller from working properly
[0004] At present, for the control of semi-free cooling conditions, manual debugging is used to ensure the minimum load rate of the chiller. There is no clear quantitative index for control, and the normal operation of the chiller cannot be fully guaranteed.

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, device and system for chiller
  • Control method, device and system for chiller
  • Control method, device and system for chiller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0050] The terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It is to be understood that data so used may be interchanged under appropriate circumstances such that the embodiments of the application described herein can, for example, be practiced in sequences other than those il...

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 application provides a control method, device and system for a chiller. The control method is applied to a controller of an air-conditioning system. The air-conditioning system includes a cooling tower, a plate heat exchanger, a chiller and a controller. The chiller includes a condenser and an evaporator. . The lower tower header of the cooling tower is connected to the plate heat exchanger, the upper tower header of the cooling tower is connected to the chiller, the plate heat exchanger is connected to the chiller, and the controller is respectively connected to the temperature sensor at the inlet of the condenser and the temperature sensor at the inlet of the evaporator. Temperature sensor, cooling tower, plate heat exchanger connection. The controller obtains the inlet temperature values ​​of the evaporator and the condenser in real time, as well as the flow rate of the chiller side, and adjusts the inlet temperature of the chiller side by adjusting the valve on the cooling side of the plate heat exchanger, and by adjusting the cooling fan speed of the cooling tower, Adjust the inlet temperature of the cooling side of the chiller. The above method makes the load rate of the chiller not lower than the minimum load rate to ensure that the chiller does not surge.

Description

technical field [0001] The present application relates to the technical field of air conditioners, and in particular, to a control method, device and system for a chiller. Background technique [0002] In the occasions where cooling is required all the year round, for the air-conditioning system composed of chillers, plate heat exchangers, cooling towers, water pumps, etc., when the outdoor temperature drops, the chilled water can be partially cooled by the plate heat exchanger and cooling tower in advance. Then let the chilled water enter the chiller, and the chiller will lower the temperature of the chilled water to the set temperature. This operating mode is generally referred to as the semi-free cooling mode. [0003] In the semi-free cooling mode, in order to make the plate heat exchanger contribute more load, it is necessary to reduce the water temperature of the lower tower of the cooling tower, but the too low water temperature of the lower tower will not only reduc...

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): F24F11/49F24F11/70F24F11/89F24F11/63F24F140/20
CPCF24F11/49F24F11/70F24F11/89F24F11/63F24F2140/20Y02B30/70
Inventor 徐世宇丁一许磊王明理
Owner 丁一
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