KR960001622Y1 - Operating-oil cooling device for hydraulic machine - Google Patents

Operating-oil cooling device for hydraulic machine Download PDF

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Publication number
KR960001622Y1
KR960001622Y1 KR2019930029140U KR930029140U KR960001622Y1 KR 960001622 Y1 KR960001622 Y1 KR 960001622Y1 KR 2019930029140 U KR2019930029140 U KR 2019930029140U KR 930029140 U KR930029140 U KR 930029140U KR 960001622 Y1 KR960001622 Y1 KR 960001622Y1
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hydraulic
cooling
machine
hydraulic oil
hydraulic machine
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KR2019930029140U
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KR950019754U (en
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이정연
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이정연
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16NLUBRICATING
    • F16N39/00Arrangements for conditioning of lubricants in the lubricating system
    • F16N39/02Arrangements for conditioning of lubricants in the lubricating system by cooling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04Special measures taken in connection with the properties of the fluid

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

내용 없음.No content.

Description

유압기계의 작동유 냉각구조Hydraulic oil cooling structure of hydraulic machine

제1도는 본 고안이 적용된 상태를 예시한 유압기계의 사시도1 is a perspective view of a hydraulic machine illustrating a state in which the present invention is applied

제2도는 본 고안의 요부분해 사시도2 is a partial perspective view of the present invention

제3도는 본 고안의 요부확대 단면도3 is an enlarged cross-sectional view of the main part of the present invention

제4도는 본 고안의 냉각부에 대한 실시예를 나타낸 정면도4 is a front view showing an embodiment of the cooling unit of the present invention

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

H : 유압기계 1 : 냉각부H: Hydraulic Machine 1: Cooling Unit

2 : 귀환부 3 : 송출부2: return unit 3: sending unit

4 : 저장탱크 5 : 유압펌프4: storage tank 5: hydraulic pump

6 : 모터 7 : 방열팬6: motor 7: heat radiating fan

8 : 팬커버8: fan cover

본 고안은 유압기계의 작동유 냉각구조에 관한 것으로, 더욱 상세하게는 유압프레스등과 같이 유압오일을 이용하는 유압작동 기계에 있어 순환작동되는 유압오일(이하, 작동유라 함)의 냉각을 보다 신속하고 원활히 하여 유압기계의 작업능률을 높이는 동시에 기계의 수명연장을 기대할 수 있게 한 것이다.The present invention relates to a hydraulic oil cooling structure of a hydraulic machine. More specifically, the hydraulic oil (hereinafter referred to as hydraulic oil) that is circulated in a hydraulic operation machine using hydraulic oil, such as a hydraulic press, can be cooled more quickly and smoothly. In this way, the working efficiency of the hydraulic machine can be increased and the life of the machine can be expected.

일반적으로 작동유는 펌프에 의해 부여된 압력을 액튜에이터(actuator)에 전하는 전달작용의 역할을 함으로써 그 힘을 이용하여 유압기계가 소기의 목적을 이루도록 한 것으로서, 작동유의 점도에 따라 기계효율이 좌우되는 것인바, 순환되는 작동유가 얼마지나지 않아 고온의 상태로 되기 때문에 작동유의 점도가 낮아져 유압펌프나 모터등의 용적효율이 저하 되고 일정한 압력을 유지하기가 곤란할 뿐 아니라 마모가 증대되어 유압기계의 무리를 주게되므로 가동을 중지하여야만 하는등 유압기계의 사용이 비효율적인 것이 사실이었다.In general, the working oil serves to transfer the pressure applied by the pump to the actuator so that the hydraulic machine achieves the desired purpose by using the force, and the mechanical efficiency depends on the viscosity of the working oil. Invar and circulating hydraulic fluid is not high enough to be in a high temperature state, so the viscosity of the hydraulic fluid is lowered, which lowers the volumetric efficiency of hydraulic pumps and motors, and it is difficult to maintain a constant pressure, and wear is increased to give pressure to hydraulic machinery. Therefore, it was true that the use of hydraulic machines was inefficient, such as the need to shut down.

이와 같이 기계작동에 따라 상승되는 작동유의 온도를 자연적으로 떨어뜨려 작동유의 점도를 일정수준으로 유지하기 위하여 작동유 저장탱크가 외부로 노출되게 하여 내부의 작동유가 자연스럽게 냉각되도록 하는 방법을 위시하여 여러가지 방법들이 모색되고는 있으나,In order to maintain the viscosity of the hydraulic fluid to a certain level by naturally dropping the temperature of the hydraulic fluid that rises according to the operation of the machine, various methods are provided such that the internal hydraulic fluid is naturally cooled by exposing the hydraulic oil storage tank to the outside. Sought, but

이 모두가 원하는 만큼 빠른 시간내에 작동유의 온도를 떨어뜨리지는 못하는 것이어서 근래들어서는 냉각의 한계 때문에 대형 유압기계의 경우에 고가의 쿨러(cooler)를 별도로 설치하여 작동유의 온도를 낮춘상태에서 일정한 점도를 유지시켜 유압기계를 구동하고 있는 실정이다.All of these do not reduce the temperature of the operating oil as quickly as desired. In recent years, due to the limitation of cooling, in the case of large hydraulic machines, an expensive cooler is separately installed to maintain a constant viscosity while lowering the operating oil temperature. The hydraulic machine is driving.

그러나, 상기와 같이 작동유 저장탱크의 벽체를 외부로 노출되게 하여 내부의 작동유가 조금이라도 빨리 냉각될 수 있도록 하는 방법의 경우 그 효과가 미비하여 기대할 수 없는 정도이며, 후자의 쿨러를 별도로 설치하여 순환되는 작동유의 온도를 낮추는 방법의 경우는 냉각효율은 높을지 모르나 그만큼 유압기계의 제작단가를 상승시키고 기계의 부피를 크게 하므로 바람직한 것은 아니었다.However, in the case of exposing the wall of the hydraulic oil storage tank to the outside as described above, the internal hydraulic fluid can be cooled even a little faster, and thus the effect is inadequate and can not be expected. Cooling efficiency may be high in the case of lowering the temperature of the working oil, but it is not preferable because the manufacturing cost of the hydraulic machine is increased and the volume of the machine is increased.

본 고안은 상기한 바와 같이 지금까지의 각종 유압기계의 사용되는 작동유의 온도를 간단하게 떨어뜨려 항상 일정수준의 점도를 유지하도록 함으로써 압력의 손실을 줄여 유압기계의 사용효율을 증대시키는 동시에 기계의 수평연장도 기대할 수 있도록 한 유압기계의 작동유 냉각구조를 제공함을 그 목적으로 하는 것으로 첨부도면을 참고로 하여 상세히 설명하면 다음과 같다.The present invention, as described above, by simply dropping the temperature of the hydraulic oil used in the various hydraulic machines up to now to maintain a constant level of viscosity at all times to reduce the pressure loss to increase the use efficiency of the hydraulic machine at the same time It is an object of the present invention to provide a hydraulic oil cooling structure of a hydraulic machine that can be expected to be extended as described in detail with reference to the accompanying drawings.

통상의 유압기계(H)에 있어, 일단은 작동된 작동유의 최종 귀환라인에 연결되는 귀환부(2)로 구성하고 타단은 귀환되는 작동유를 다시 작동유 저장탱크(4)로 보내기 위한 송출부(3)로 구성하여 코일상(狀)으로 다수 감아서 되는 냉각부(1)를 유압펌프(5)와 연결되는 공지의 모터(6) 후부의 방열팬(7) 부위 팬커버(8)내에 고정설치하여 모터(6)가 회전함에 따라 방열팬(7)의 회전력을 이용해 상기 냉각부(1)를 냉각시키도록 한 것을 특징으로 하는 유압기계의 작동유 냉각구조이다.In the conventional hydraulic machine (H), one end is composed of a return unit (2) connected to the final return line of the operated hydraulic oil and the other end is a delivery unit (3) for sending the returned hydraulic oil back to the hydraulic oil storage tank (4) The cooling unit 1, which is wound around the coil in a large number, and is fixedly installed in the fan cover 8 at the heat dissipation fan 7 in the rear of a known motor 6 connected to the hydraulic pump 5 The hydraulic fluid cooling structure of the hydraulic machine, characterized in that for cooling the cooling unit 1 by using the rotational force of the heat radiating fan (7) as the motor (6) rotates.

상기와 같은 구성으로 되는 본 고안에 의한 유압기계의 작동유 냉각구조의 작용 및 효과에 대해 설명하면,Referring to the operation and effect of the hydraulic fluid cooling structure of the hydraulic machine according to the present invention having the configuration as described above,

먼저 작동유 저장탱크(4)로 부터 유압기계(H)의 작동을 위해 작동된 작동유는 다시 작동유 저장탱크(4)로 귀환 되기 전에 일단 냉각부(1)를 거치도록 되는데 귀환부(2)를 통해 코일상으로 감겨진 냉각부(1)를 거치는 동안 유압펌프(5)를 구동시키고 있는 모터(6)의 회전에 따라 방열팬(7)이 회전하면서 냉각부(1)를 냉각시켜주게 되는 것인바,First, the hydraulic oil operated for the operation of the hydraulic machine (H) from the hydraulic oil storage tank (4) passes through the cooling unit (1) once before returning to the hydraulic oil storage tank (4). The heat dissipation fan 7 rotates as the motor 6 drives the hydraulic pump 5 while the cooling unit 1 wound around the coil rotates to cool the cooling unit 1. ,

액튜에이터(A)에 일정한 압력을 전달하고 탱크(4)로 귀환되는 작동유는 그대로 저장탱크(4)로 귀환되는 것이 아니고 귀환부(2)에서 송출부(3)에 이르는 동안, 다시말해 냉각부(1)를 거치는 동안 충분히 냉각이 된 상태에서 다시 작동유 저장탱크(4)로 보내져 적정한 점도를 유지한 채 펌프의 압력을 액튜에이터에 전달하는 구동원으로서의 역할을 반복적으로 수행하게 되는 것이다.The hydraulic oil which transmits a constant pressure to the actuator A and returns to the tank 4 is not returned to the storage tank 4 as it is, but from the return section 2 to the delivery section 3, that is, the cooling section ( During 1), while being sufficiently cooled, it is sent back to the working oil storage tank (4) to repeatedly perform a role as a driving source for transmitting the pressure of the pump to the actuator while maintaining the proper viscosity.

이때, 상기 모터(6) 후부에 장착되는 방열팬(7)의 구성을 기존의 임펠러형으로만 국한하는 것이 아닌 모터(6)의 냉각 성능을 저해하지 않는 범위내에서 일반선풍기나 환풍기등과 같은 프로펠러형으로 변형 실시하면 냉각부(1)에 대한 냉각 효율을 더욱 높일 수 있게 되는 것으로 임의 변형실시가 가능하게 된다.At this time, the configuration of the heat radiating fan 7 mounted to the rear of the motor 6 is not limited to the existing impeller type, but does not impair the cooling performance of the motor 6, such as a general fan or a fan. Deformation to the propeller type can further increase the cooling efficiency of the cooling unit 1, so that arbitrary deformation can be performed.

그리고 냉각부(1)를 이루는 관의 경우 일반동관(銅管)등을 사용하여도 무방하나 냉각효율을 높이기 위해 제4도에 도시한 바와 같이 외면에 다수의 휜(fin)(1a)을 일체로 형성한 관을 사용함으로써 그 내부에서 흐르는 작동유의 냉각효율을 향상시킬 수 있게 된다.In the case of the pipe forming the cooling unit 1, a general copper tube may be used, but as shown in FIG. 4, a plurality of fins 1a are integrally formed on the outer surface to increase the cooling efficiency. By using the tube formed in this way, the cooling efficiency of the working oil flowing therein can be improved.

상기와 같이 본 고안의 유압기계의 작동유 냉각구조에 의하면 작동유 저장탱크로 부터 모터에 의해 구동되는 유압펌프의 압력을 액튜에이터에 전달하기 위해 순환되는 작동유를 일단 액튜에이터에 펌프의 압력을 전달하여 그 온도가 고온으로 된 작동유를 그대로 탱크로 귀환시키는 것이 아니고, 작동유의 냉각을 위해 모터 후방의 방열팬 측에 설치되는 냉각부를 거치게 한후 다시 탱크로 귀환시킴으로써, 작동유가 냉각부를 거치면서 팬에 의해 보다 강력하게 냉각되어 그 온도가 낮아져 적정수준의 점도를 유지할 수 있게 된다.According to the hydraulic oil cooling structure of the hydraulic machine of the present invention as described above, the hydraulic oil circulated to transfer the pressure of the hydraulic pump driven by the motor from the hydraulic oil storage tank to the actuator, once the pressure of the pump is transferred to the actuator and the temperature is increased. Instead of returning the high temperature hydraulic oil to the tank as it is, the cooling oil installed in the heat radiating fan side of the motor goes through the cooling unit, and then back to the tank so that the hydraulic oil cools more strongly by the fan while passing through the cooling unit. The temperature is lowered to maintain the viscosity at an appropriate level.

그럼으로써 유압펌프나 모터의 용적효율이 저하되는 것을 효과적으로 방지하며, 항상 일정한 압력을 유지할 수 있게 되므로 유압기계가 무리를 받게 되는 일은 발생하지 않게 되어 기계의 수명연장을 기대할 수 있음과 아울러 기계를 효율적으로 사용할 수 있게 되므로 그만큼 작업능률을 높일 수 있어 생산성이 향상되는 등의 유용한 효과를 제공한다.As a result, the volumetric efficiency of the hydraulic pump or motor can be effectively prevented, and the constant pressure can be maintained at all times, so that the hydraulic machine is not subjected to overload, and the life of the machine can be expected and the machine can be efficiently Since it can be used as a product, it can increase the work efficiency, thereby providing useful effects such as improving productivity.

Claims (2)

통상의 유압기계(H)에 있어,In the normal hydraulic machine (H), 일단은 작동된 작동유의 최종 귀환라인에 연결되는 귀환부(2)로 구성하고 타단은 귀환되는 작동유를 다시 작동유 저장탱크(4)로 보내기 위한 송출부(3)로 구성하여,One end is composed of a return unit (2) connected to the final return line of the working oil and the other end is composed of a delivery unit (3) for sending the returned hydraulic oil back to the hydraulic oil storage tank (4), 코일상으로 다수 감아서 되는 냉각부(1)를 유압펌프(5)와 연결되는 공지의 모터(6) 후부의 방열팬(7) 부위 팬커버(8)내에 고정설치하여The cooling unit 1 wound around a large number of coils is fixedly installed in the fan cover 8 of the heat dissipation fan 7 at the rear of a known motor 6 connected to the hydraulic pump 5 모터(6)가 회전함에 따라 방열팬(7)의 회전력을 이용해 상기 냉각부(1)를 냉각시키도록한 것을 특징으로 하는 유압기계의 작동유 냉각구조.Hydraulic oil cooling structure of a hydraulic machine, characterized in that for cooling the cooling unit (1) by using the rotational force of the heat radiating fan (7) as the motor (6) rotates. 제1항에 있어서, 상기 냉각부(1)는 외주연에 다수의 휜(1a)을 일체로 형성한 것을 특징으로 하는 유압기계의 작동유 냉각구조.The hydraulic fluid cooling structure of claim 1, wherein the cooling unit (1) integrally forms a plurality of fins (1a) on an outer circumference.
KR2019930029140U 1993-12-23 1993-12-23 Operating-oil cooling device for hydraulic machine KR960001622Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019930029140U KR960001622Y1 (en) 1993-12-23 1993-12-23 Operating-oil cooling device for hydraulic machine

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Application Number Priority Date Filing Date Title
KR2019930029140U KR960001622Y1 (en) 1993-12-23 1993-12-23 Operating-oil cooling device for hydraulic machine

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KR950019754U KR950019754U (en) 1995-07-24
KR960001622Y1 true KR960001622Y1 (en) 1996-02-21

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