KR101723383B1 - Temperature control system of oil tank - Google Patents

Temperature control system of oil tank Download PDF

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Publication number
KR101723383B1
KR101723383B1 KR1020150091025A KR20150091025A KR101723383B1 KR 101723383 B1 KR101723383 B1 KR 101723383B1 KR 1020150091025 A KR1020150091025 A KR 1020150091025A KR 20150091025 A KR20150091025 A KR 20150091025A KR 101723383 B1 KR101723383 B1 KR 101723383B1
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KR
South Korea
Prior art keywords
oil tank
tank
heat exchanger
pump
temperature
Prior art date
Application number
KR1020150091025A
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Korean (ko)
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KR20170001278A (en
Inventor
김영수
Original Assignee
주식회사 케이피세븐
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Priority to KR1020150091025A priority Critical patent/KR101723383B1/en
Publication of KR20170001278A publication Critical patent/KR20170001278A/en
Application granted granted Critical
Publication of KR101723383B1 publication Critical patent/KR101723383B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/045—Compensating for variations in viscosity or temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/615—Filtering means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/62—Cooling or heating means

Abstract

The present invention is characterized in that the operating oil is circulated in the working oil tank and the circulating operating oil is indirectly heated by the band heater to minimize the generation of scales and foreign substances and the temperature control system of the operating oil tank .

Figure R1020150091025

Description

[0001] Temperature control system of oil tank [0002]

[0001] The present invention relates to a temperature control system for a hydraulic oil tank, and more particularly, to a temperature control system for an operating oil tank, which can compensate for a set temperature within a short time while circulating a working oil. And to a temperature control system for a hydraulic oil tank in which a heater can be easily exchanged.

Generally, the hydraulic oil itself must be incompressible in order to reliably transmit the power to the hydraulic oil used for power transmission of the hydraulic device, and a suitable viscosity must be maintained to minimize the power loss.

However, due to the characteristics of the hydraulic device, the operating temperature is raised by the repetitive operation and the viscosity becomes thin, so that the efficiency of the various parts such as the pump, the motor, the valve, and the cylinder and the heat exchanger in the hydraulic circuit is remarkably decreased, There is a problem that leakage occurs.

Therefore, conventionally, a heat exchanger is installed so that the temperature of the hydraulic oil is lower than the proper temperature, and the hydraulic oil returned to the hydraulic tank is cooled by the heat exchanger and then flows into the hydraulic tank, The system is generally configured.

The temperature of the hydraulic oil returned to the hydraulic tank side is not constant and it is difficult to adjust the temperature in the hydraulic tank to an appropriate temperature by the heat exchanger. In order to solve this problem, there is a case where a heater is installed on a hydraulic tank or a line. In this case, there is a problem that foreign substances and scale components are attached to the periphery of the heater,

In order to solve the above problems, the present invention is characterized in that the working oil is circulated in the working oil tank and the circulating operating oil is indirectly heated by the band heater to minimize the generation of scales and foreign matter, Provides a temperature control system for the hydraulic oil tank.

According to an aspect of the present invention, there is provided a temperature control system for a hydraulic oil tank, comprising: a hydraulic oil tank; A supply line installed in the hydraulic oil tank; Installed in the supply line; A pump for feeding the hydraulic fluid; A filter for filtering foreign matters contained in the operating oil; A heating tank having a plurality of bend heaters on an outer surface thereof and two or more heaters connected in series; A heat exchanger for lowering the operating fluid raised in the heating tank to a set temperature; A recovery line connected between the heat exchanger and the hydraulic oil tank; A first bypass pipe installed between the pump and the filter and between the recovery line; A second bypass pipe installed at an inlet side and an outlet side of the filter; And a control unit for selectively controlling the operation of the pump, the band heater, and the heat exchanger.

Accordingly, in the temperature control system of the operating oil tank of the present invention, the operating oil is circulated in the working oil tank, and the circulating operating oil is indirectly heated by the band heater to minimize the generation of scales and foreign matter, There is an easy effect.

1 is a schematic view showing a temperature control system of a working oil tank according to the present invention;

The temperature control system of the hydraulic oil tank according to the present invention will be understood by those skilled in the art with reference to the accompanying drawings.

In the following description of the exemplary embodiments of the present invention, a detailed description of components that are widely known and used in the art to which the present invention belongs is omitted, and unnecessary explanations thereof are omitted. It is to communicate the point more clearly.

delete

1, the temperature control system of the hydraulic oil tank of the present invention includes a hydraulic oil tank 10, a supply line 20 installed in the hydraulic oil tank 10, A pump 40 for filtering the foreign substances contained in the operating oil and a heating line 40 connected to two or more in series on the supply line 20 passing to the filter 40. [ A tank 50, a heat exchanger 60 for lowering the operating fluid raised in the heating tank 50 to a set temperature, a recovery line 70 connected between the heat exchanger 60 and the working oil tank 10, A first bypass pipe 80 provided between the pump 30 and the supply line 20 between the filter 40 and the recovery line 70 and a second bypass pipe 80 between the inlet side of the filter 40 and the exhaust side And a control for selectively controlling the operation of the pump 30, the band heater 51, the heat exchanger 60, the temperature sensor, and the like. It consists of a.

The working oil tank 10 is provided with a temperature sensor 11 for sensing the temperature of the operating oil.

A temperature sensor 21 is installed on the side of the supply line 20 to sense the temperature of the operating oil discharged from the working oil tank 10.

The pump 30 may be provided on the supply line 20 side or on one or more sides thereof.

The filter 40 collects impurities or iron components contained in the operating oil.

The heating tank 50 forms a space for circulating the hydraulic fluid therein and is flanged on the upper and lower sides. A connection pipe 52 is provided between the heating tank 50 and the heating tank 50, Zigzag.

Two or more band heaters 51 are provided on the outer surface of the heating tank 50.

In this manner, the band heater 51 can sequentially heat the operating oil circulated into the heating tank 50. [

The heat exchanger 60 is preferably a plate heat exchanger for cooling the hydraulic fluid circulating the cooling water, but it is not limited thereto and may be formed in various structures.

A pressure gauge is installed at the intersection of the first bypass pipe 80 and the supply line 20 and a pressure gauge is installed in the first bypass pipe 80 connected to the recovery line 70.

The first bypass pipe (80) is for circulating the hydraulic oil during the failure or repair of the heat exchanger (60) and the heating tank (50).

The second bypass pipe (90) is provided with a valve in place to guide the circulation of the operating fluid during the fixing or replacement operation of the filter (40).

As described above, when the temperature control system of the working oil tank of the present invention is circulated to the working oil tank 10 through the heat exchanger 60 through various components such as a pump, a motor, a valve, and a cylinder, The control unit senses the temperature of the temperature sensor and controls the pump 30 to forcibly circulate the operating oil when the temperature of the tank 10 is 35 ° C or lower. Power is applied to the band heater 51 to raise the temperature of the operating oil passing through the heating tank 50 to the set temperature and circulate to the collection line 70 side. This method is repeatedly performed to adjust the temperature of the working oil tank 10 to the set temperature.

When the temperature of the working oil tank 10 is 45 ° C or higher, the operating oil is circulated, and the working oil is circulated to the working oil tank 10 by the heat exchanger 60 to a set temperature.

The control unit that senses the temperature in the working oil tank 10 above or below the set temperature always controls the pump 30, the band heater 51, the heat exchanger 60, The operation of various components such as a pump, a motor, a valve, and a cylinder operated by operating oil is smoothly performed.

In addition, since the band heater 51 adopts the indirect heating method, it is possible to minimize the generation of scales and foreign matter of the operating oil and to easily replace the band heater 51 when the band heater 51 fails.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. will be.

10: hydraulic oil tank 20: supply line
30: pump 40: filter
50: Heating tank 60: Heat exchanger

Claims (1)

A working oil tank (10);
A supply line 20 installed in the hydraulic oil tank 10;
Is installed in the supply line (20);
A pump 30 for feeding hydraulic oil;
A filter (40) for filtering foreign matter contained in the operating oil;
A heating tank 50 having a plurality of band heaters 51 on its outer surface and two or more connected in series;
A heat exchanger (60) for lowering the operating fluid raised in the heating tank (50) to a set temperature;
A recovery line 70 connected between the heat exchanger 60 and the hydraulic oil tank;
A first bypass pipe (80) installed between the supply line (20) between the pump (30) and the filter (40) and the recovery line (70);
A second bypass pipe (90) provided on the inlet side and the discharge side of the filter (40);
And a control unit for selectively controlling operations of the pump (30), the band heater (51), and the heat exchanger (60).
KR1020150091025A 2015-06-26 2015-06-26 Temperature control system of oil tank KR101723383B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150091025A KR101723383B1 (en) 2015-06-26 2015-06-26 Temperature control system of oil tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150091025A KR101723383B1 (en) 2015-06-26 2015-06-26 Temperature control system of oil tank

Publications (2)

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KR20170001278A KR20170001278A (en) 2017-01-04
KR101723383B1 true KR101723383B1 (en) 2017-04-05

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190045446A (en) 2017-10-24 2019-05-03 현대위아 주식회사 Operating oil temperature control apparatus
KR102250494B1 (en) * 2018-08-08 2021-05-11 주식회사 자동기 Snow melting device mounted on vehicle and the driving method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5425043B2 (en) * 2010-11-22 2014-02-26 株式会社神戸製鋼所 Oil-cooled compressor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2106819C3 (en) * 1971-02-12 1978-11-16 Henkel Kgaa, 4000 Duesseldorf Rinse aid for machine dishwashing
JPH0645102U (en) * 1992-11-26 1994-06-14 株式会社アーレスティ Temperature control device for hydraulic oil in hydraulic equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5425043B2 (en) * 2010-11-22 2014-02-26 株式会社神戸製鋼所 Oil-cooled compressor

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