Water chilling unit control system and its control method
A technology for chillers and control systems, applied in refrigerators, refrigeration components, compressors, etc., to achieve the effect of improving reliability, reducing structural complexity and cost, and reducing the loss of considered shutdowns
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment
[0020] The control system of this example includes MCU and water flow detection circuit, as shown in Figure 1. The water flow detection circuit is composed of +20V power supply, photocoupler D1, resistors R1, R2, capacitor C1, and water flow switch SW1. The working principle of the circuit is as follows:
[0021] When the water flow switch SW1 is disconnected, the current flowing through the resistor R1 and pins 1 and 2 of the photocoupler D1 is 0, and the pins 3 and 4 of the photocoupler D1 are cut off and in the disconnected state. The SW input of the MCU The terminal is pulled up to a high level (+5V) by the resistor R2. Capacitor C1 has a filtering effect, so that the level signal entering the MCU is clean and without interference, and resistor R1 has a current limiting effect. When the water flow switch SW1 is turned on, the current flowing through the resistor R1 and pins 1 and 2 of the photocoupler D1 is about 4mA, the pins 3 and 4 of the photocoupler D1 are saturated...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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