Rotating speed control method and device for cooling fan in hydraulic system

A technology for cooling fans and hydraulic systems, used in fluid pressure actuation devices, fluid pressure actuation system components, pump control, etc. The effect of rational use

Active Publication Date: 2014-02-05
ZOOMLION HEAVY IND CO LTD
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is unreliable to forcibly establish the relationship between the engine speed and the cooling demand of the cooling fan. The focus is on reducing the fan speed at idle speed (when the device is not working

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
  • Rotating speed control method and device for cooling fan in hydraulic system
  • Rotating speed control method and device for cooling fan in hydraulic system
  • Rotating speed control method and device for cooling fan in hydraulic system

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict.

[0026] figure 1 It is a flowchart of a method for controlling the rotation speed of a cooling fan in a hydraulic system according to an embodiment of the present invention. Such as figure 1 As shown, the method includes steps S102-S106:

[0027] Step S102: Obtain the current oil temperature of the hydraulic system and the balance rotation speed of the cooling fan at the preset target temperature, where the heat dissipation and heat generation of the hydraulic system are equal at the balance rotation speed. In other words, at this equilibrium speed, the hydraulic system is in thermal equilibrium. The thermal equilibrium state means that the heat generated by the hydraulic system is equal ...

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 provides a rotating speed control method and a rotating speed control device for a cooling fan in a hydraulic system. The method comprises the following steps of acquiring current oil temperature of the hydraulic system and a balanced rotating speed of the cooling fan at preset target temperature, wherein at the balanced rotating speed, the heat dissipation amount of the hydraulic system is equal to the heating amount of the hydraulic system; comparing the preset target temperature and the current oil temperature; controlling the rotating speed of the cooling fan according to a comparison result to enable the current oil temperature to reach the preset target temperature; when the current oil temperature reaches the preset target temperature, controlling the cooling fan to run according to the balanced rotating speed. According to the technical scheme provided by the invention, the problems of electricity loss of a storage battery and waste of energy which are caused by a reason that the cooling fan adopts higher rotating speed in the correlation technique are solved; the cooling fan can be controlled to be run at the balanced rotating speed; the hydraulic system is kept constant at the set temperature; the power consumption of the cooling fan is reasonably used.

Description

technical field [0001] The invention relates to the field of heat dissipation of a hydraulic system, in particular to a method and device for controlling the speed of a cooling fan in a hydraulic system. Background technique [0002] As key equipment in construction, most construction machinery often have to work for a long time in harsh environments. Because they often work in high-temperature environments with heavy loads for a long time, the oil temperature of the hydraulic system will be too high during work, so In order to meet the heat dissipation requirements of the hydraulic oil, the cooling fans used to cool the hydraulic system are kept running at a constant speed to ensure that the entire hydraulic system has cooling air for cooling under any working conditions. But this will result in excess cooling capacity in winter, wasting energy and increasing operating costs. In summer, there may be insufficient cooling capacity to make the hydraulic oil temperature too hi...

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
IPC IPC(8): F15B21/04F04D27/00
Inventor 曾中炜
Owner ZOOMLION HEAVY IND CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap