Oil cooling system and control method thereof
A technology of an oil cooling system and a control method, applied in fluid pressure actuation system components, fluid pressure actuation devices, mechanical equipment, etc. Load cooling requirements and other issues
Active Publication Date: 2019-05-14
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
Usually, for machine tools with large cooling capacity requirements, two parallel oil cooling units are generally used to cool the oil temperature. When the load is heavy, the two oil cooling units work at the same time, and when the load is small, only one oil cooling unit is used. Work, in this way, when the oil pump in one of the oil cooling units fails, the cooling capacity of the remaining oil cooling unit cannot meet the heat dissipation requirements of the heavy load of the machine tool, and the machine tool cannot work normally
In addition, when the initial hydraulic oil temperature is high, two oil coolers working in parallel cannot quickly reduce the oil temperature of the machine to the target oil temperature, and a certain cooling cycle is required, resulting in low working efficiency of the machine tool
Method used
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[0028] see in conjunction figure 1 , figure 2 As shown, according to an embodiment of the present invention, an oil cooling system is provided, including a refrigeration subsystem and a cooling unit, and the cooling unit includes a first oil inlet branch 11, a second oil inlet branch 12, a first oil outlet branch 13, the second oil outlet branch 14, the first oil inlet branch 11 and the second oil inlet branch 12 are connected in parallel to the inlet of the hydraulic oil heat exchange tube 15, and the first oil outlet The branch 13 and the second oil outlet branch 14 are connected in parallel to the outlet of the hydraulic oil heat exchange pipe 15. The first oil inlet branch 11, the second oil inlet branch 12, the first oil outlet The branch 13 and the second oil outlet branch 14 can be separately and controllably turned on or off, the first oil inlet branch 11 has a first oil inlet 111, and the second oil inlet branch 12 has a first oil inlet 111. Two oil inlets 121, the...
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The invention provides an oil cooling system and a control method thereof. The oil cooling system includes cooling units. Each cooling unit includes a first oil inlet branch, a second oil inlet branch, a first oil outlet branch and a second oil outlet branch, the first oil inlet branch, the second oil inlet branch, the first oil outlet branch and the second oil outlet branch can be opened or closed independently controllably, a first oil inlet of a first unit is in shared-pipe connection with a first oil inlet of a second unit, a second oil inlet of the first unit is in shared-pipe connectionwith a second oil outlet of the second unit, a first oil outlet of the first unit is in shared-pipe connection with a first oil outlet of the second unit, a second oil outlet of the first unit is in shared-pipe connection with a second oil inlet of the second unit, and a hydraulic oil heat exchange pipe can dissipate heat from hydraulic oil in the hydraulic oil heat exchange pipe. According to theoil cooling system and the control method thereof, the series and parallel state switching between the at least two cooling units can be realized, and the heat dissipation requirement of the hydraulic oil of the machine tool can be more flexibly matched.
Description
technical field [0001] The invention belongs to the technical field of hydraulic oil temperature adjustment, and in particular relates to an oil cooling system and a control method thereof. Background technique [0002] The temperature of hydraulic oil is very important to the stability of the machining process of machine tools, especially for high-precision machine tools, the temperature and fluctuation of hydraulic oil have strict requirements. At present, oil cooling systems are mostly used in the industry to cool and control the temperature of hydraulic oil of machine tools. Usually, for machine tools with large cooling capacity requirements, two parallel oil cooling units are generally used to cool the oil temperature. When the load is heavy, the two oil cooling units work at the same time, and when the load is small, only one oil cooling unit is used. Working in this way, when the oil pump in one of the oil cooling units fails, the cooling capacity of only one oil cool...
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IPC IPC(8): F15B21/0423
Inventor 毕增利赵成寅陈桂福杨爱玲
Owner GREE ELECTRIC APPLIANCES INC