JPH0669324U - Liquid cooling system - Google Patents

Abstract

(57) [Summary] [Purpose] To absorb surge pressure generated in liquid in a liquid cooling device. [Structure] An elastic hose is attached to an inlet tank provided with an inlet pipe of a cooling device to absorb a pressure change of liquid, so-called surge pressure, by its elastic deformation, and each part of the cooling device can be made thin.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a liquid cooling device, and more particularly to a liquid cooling device suitable for use in a liquid control system that controls the flow rate or liquid pressure by opening and closing a control valve.

[0002]

[Prior art]

 Liquid cooling devices are used in various fields. In general, a liquid that has reached a high temperature is cooled by exchanging heat with the atmosphere through a cooling tube equipped with cooling fins.

For example, taking a hydraulic drive type industrial machine as an example, when controlling the size, speed and direction of the work of each operating part of the industrial machine, hydraulic pressure is used to control the amount of oil in the operating oil. By opening and closing the control valve. The hydraulic oil circulates in a manner that absorbs heat generated by friction of each operating part, and a cooling device is used to cool the hot hydraulic oil.

[0004]

[Problems to be solved by the device]

 However, in the liquid cooling device as described above, a pressure change or so-called surge pressure is generated by opening and closing the control valve, but in some cases the surge pressure becomes abnormally high. In addition, the cooling tube had to be thick, and the connecting portion between the inlet and outlet tanks and the cooling tube had to be thick and strong.

In view of the above, the present invention has a low cost of attaching an elastic hose and absorbs the surge pressure even if a surge pressure is generated to propagate the surge pressure to the inlet tank, the outlet tank and the cooling tube. It is an object of the present invention to provide a cooling device that prevents and makes each part thin.

[0006]

[Means for solving the problem]

 In order to achieve the above object, the present invention provides a liquid cooling device in which an inlet tank having an inlet pipe and an outlet tank having an outlet pipe are connected to each other through a plurality of cooling tubes. It is characterized by comprising an elastic hose having one end connected and the other end closed.

[0007]

[Action]

 Even if an abnormally high surge pressure generated in the liquid control system acts on the cooling device, the surge pressure is absorbed by the elastic deformation of the elastic hose.

[0008]

【Example】

 Hereinafter, one embodiment of the present invention will be described in detail with reference to FIG.

In this embodiment, the present invention is applied to a hydraulic oil cooling device in a hydraulically driven industrial machine.

In the drawings, reference numeral 1 generally indicates a cooling device according to an embodiment of the present invention. The cooling device 1 has an inlet tank 3 provided with an inlet pipe 2, an outlet tank 5 provided with an outlet pipe 4, and a plurality of cooling tubes 6 communicating the two tanks 3 and 5 with each other. . The inlet pipe 2 and the outlet pipe 4 are appropriately connected to the hydraulic circuit so that hydraulic oil of a hydraulic circuit forming a liquid control system (not shown) may pass therethrough. Cooling fins 7 are attached to the outer periphery of the cooling tube 6 to enhance cooling efficiency. The configuration described above is exactly the same as that of a conventionally known cooling device.

In the present embodiment, the elastic hose 8 is connected to the inlet tank 3. More specifically, the elastic hose 8 has one end connected to a connection pipe 9 fixedly connected to the inlet tank 3 and the other end closed by a plug 10. The plug 10 is fixed to the outlet tank 5 by a bracket 11, and the elastic hose 8 is arranged along the side surface of the cooling device as a whole. The elastic hose 8 is an ordinary commercially available low-pressure elastic hose.

Next, the operation will be described. Since heat is generated due to friction or the like of each operating portion of the hydraulic circuit (not shown), the operating oil whose temperature is raised while passing through the hydraulic circuit flows through the inlet pipe 2 serving as an inlet to the inlet tank 3. Next, the hydraulic oil flows through the cooling tube 6 to the outlet tank 5, but since the cooling fin 6 is attached to the cooling tube 6, heat exchange with the atmosphere should be performed while passing through the cooling tube 6. The temperature is lowered at and flows to the outlet tank 5. Further, the hydraulic oil returns from the outlet tank 5 to the hydraulic circuit through the outlet pipe 4. Then, in the hydraulic circuit, a large pressure change, that is, a surge pressure may occur in the hydraulic oil due to the opening and closing of a control valve (not shown). In this case, the surge pressure also acts on the working oil in the inlet tank 3, but since the elastic hose 8 is attached to the inlet tank 3, this elasticity absorbs the surge pressure.

Another embodiment is shown in FIG.

In this embodiment, the elastic hose 8 is arranged along the bottom surface of the inlet tank 3. More specifically, the elastic hose 8 has one end connected to a connection pipe 9 fixed to the inlet tank 3 and the other end closed by a plug 10.

In addition to this, it is of course possible to change the arrangement including the arrangement of each tank according to the space and the like.

According to the above-described two embodiments, even if an abnormally high surge pressure generated in the hydraulic circuit acts on the cooling device 1, the surge pressure is absorbed by the elasticity of the elastic hose 8. No surge pressure acts on the inlet tank 3, the outlet tank 5 and the cooling tube 6. Therefore, each part can be made thin. Moreover, it is possible to carry out the process at an extremely low cost simply by installing the commercially available elastic hose 8 in the cooling device 1. Further, in both embodiments, the elastic hose 8 is arranged along the side surface or the bottom surface of the cooling device 1, so that the cooling device 1 can be minimized in size increase. Furthermore, in both embodiments, the elastic hose 8 has one end connected to the connecting pipe 9 and the plug 10 at the other end attached to the inlet tank 3 or the outlet tank 5 by the bracket 11. Since the elastic hose 8 is supported at both ends, it is possible to prevent the elastic hose 8 from swinging even if vibration or the like is applied to the cooling device 1 and obtain sufficient durability. it can.

[0017]

[Effect of device]

 As is clear from the above, even if an abnormally high surge pressure acts on the cooling device, the surge pressure is absorbed by the elasticity of the elastic hose, so the surge pressure on the inlet tank, outlet tank and cooling tube Since the propagation can be prevented, each part can be made thin, and the elastic hose is simply connected to the cooling device, it can be implemented at an extremely low cost.

[Brief description of drawings]

FIG. 1 is an overall view of a cooling device according to an embodiment of the present invention.

FIG. 2 is a view taken along the arrow II in FIG.

FIG. 3 is a view taken along arrow III in FIG.

FIG. 4 is an overall view of a cooling device according to another embodiment of the present invention.

[Explanation of symbols]

 1 Cooling device 2 Inlet pipe 3 Inlet tank 4 Outlet pipe 5 Outlet tank 6 Cooling tube 7 Cooling fin 8 Elastic hose 9 Connecting pipe 10 Plug 11 Bracket

Claims (1)

[Scope of utility model registration request] 1. A liquid cooling device in which an inlet tank having an inlet pipe and an outlet tank having an outlet pipe are connected to each other through a plurality of cooling tubes, wherein one end is connected to the inlet tank and the other end is closed. And a liquid cooling device, which is provided with an elastic hose.