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

Refrigeration system control method and device

A technology of a refrigeration system and a control method, which is applied to refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of difficult to achieve continuous adjustment of temperature, transition of refrigeration pipeline refrigeration temperature, and need to be further improved in intelligence. Realize the effect of intelligent and continuous adjustment of temperature and avoid excessive evaporation pressure

Active Publication Date: 2021-04-20
JIANGSU TUOMILUO ENVIRONMENTAL TEST EQUIP CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above solutions need to be adjusted manually, and the intelligence needs to be further improved
Moreover, increasing or decreasing the number of refrigeration pipelines can easily lead to a jump in the refrigeration temperature, and it is difficult to achieve continuous temperature adjustment.

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 control method and device
  • Refrigeration system control method and device
  • Refrigeration system control method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0037] Embodiments of the present invention provide a control method and device for a refrigeration system. The refrigerating system includes a throttling element, an evaporator, and a compressor connected in sequence through pipelines, and of course, also includes a condenser connected between the throttling element and the compressor. The throttling element can be an expansion valve or a capillary tube, which can be controlled by...

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 present invention provides a control method and device for a refrigeration system. The control method includes: comparing the first temperature difference ΔT1 between the inlet and outlet temperatures of the evaporator with the first target temperature difference T10; if ΔT1>T10+n, The PID controller reduces the output; if ΔT1 <t10‑n，pid控制器调大输出量；通过不断调整输出量，得到n组第一温差δt1，直至t10‑n<δt1<t10+n，维持输出量不变；将制冷剂的蒸发温度与设定值温度得到的第二温差δt2与第二目标温差值t20进行比较；如果δt2>T20+m, the PID controller reduces the output; if ΔT2< / t10‑n，pid控制器调大输出量；通过不断调整输出量，得到n组第一温差δt1，直至t10‑n<δt1<t10+n，维持输出量不变；将制冷剂的蒸发温度与设定值温度得到的第二温差δt2与第二目标温差值t20进行比较；如果δt2>

Description

technical field [0001] The invention relates to the technical field of refrigeration system control, in particular to a method and device for controlling a refrigeration system. Background technique [0002] The statements in this section only provide background information related to the present disclosure and may not constitute prior art. [0003] At present, the traditional PID algorithm based on temperature deviation has serious drawbacks in the application of mechanical refrigeration. Specifically, the traditional PID algorithm judges the output according to the difference between the temperature set point (SP) and the temperature actual value (PV). For example, in a schematic scenario, if it is desired to reduce the cooling temperature from the current 150°C to -70°C (the temperature drop reaches 220°C), the PID algorithm determines that the output is 100%. At this time, the capillary is opened with the maximum flux, and the Freon flow increases sharply in order to r...

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): F25B49/02
CPCF25B49/02
Inventor 张波
Owner JIANGSU TUOMILUO ENVIRONMENTAL TEST EQUIP 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

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