JP2019098253A - Defoaming module and vehicle - Google Patents

Abstract

To provide a defoaming module which can suitably remove air bubbles contained in an oil without requirement for additional power.SOLUTION: A defoaming module comprises: a case having an introduction port through which an oil is introduced and an exhaust port for exhausting a gas derived from air bubbles contained in the oil to the exterior; one or more porous hollow fibers disposed in the case, and extending from the introduction port to the exhaust port; an introduction side holding member disposed so as to seal the introduction port, and fixing one end of the hollow fiber; and an exhaust side holding member disposed so as to seal the exhaust port, and fixing the other end of the hollow fiber. The introduction side holding member has an introduction hole for circulating the oil from the introduction port to the one end of the hollow fiber, the exhaust side holding member has an exhaust hole for circulating the gas from the other end of the hollow fiber to the exhaust port, and the case further has a delivery port for delivering the oil penetrating from an inside to an outside of the hollow fiber, to the exterior.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a degassing module and a vehicle.

  In vehicles such as automobiles, oil such as lubricating oil and hydraulic oil is used for the purpose of reducing wear of a drive system and transmitting operating force. These oils circulate from the use position back to the storage tank after being transferred from the storage tank to the use position by the oil pump.

  When oil is used in the circulation system, air bubbles may be generated in the oil. Then, when the oil containing bubbles is used, energy loss occurs due to the bubbles contained in the oil.

  Then, the oil supply system which can prevent mixing of the bubble in oil is proposed (patent document 1). The oil supply system of Patent Document 1 has an apparatus storage chamber for storing an oil using apparatus, which is an oil use position, and an oil storage tank in a sealed structure, and exhausts air in the apparatus storage chamber and air in the oil storage tank by a vacuum pump. As a result, air bubbles are not present in the space in the oil supply system and in the oil.

JP, 2017-44325, A

  Since the oil supply system of Patent Document 1 uses a vacuum pump for exhausting, it requires energy to operate the vacuum pump. Further, the oil supply system of Patent Document 1 can not be miniaturized because it requires a space for installing a vacuum pump. Therefore, it is difficult to mount the oil supply system of Patent Document 1 on a vehicle such as a car.

  The present invention has been made based on the circumstances as described above, and provides a degassing module capable of appropriately removing air bubbles contained in oil without requiring additional power, and a vehicle equipped with the degassing module. The purpose is

  A degassing module according to an aspect of the present invention made to solve the above problems is a degassing module for removing air bubbles contained in oil transferred by an oil pump, and an inlet for introducing the oil and A case having a discharge port for discharging the gas derived from the bubbles to the outside, porous one or more hollow fibers disposed in the case and extending from the introduction port to the discharge port, the introduction port And an introduction side holding member for fixing one end of the hollow fiber, and a discharge side for sealing the discharge port and fixing the other end of the hollow fiber. A holding member, wherein the introduction side holding member has an introduction hole for circulating the oil from the introduction port to one end of the hollow fiber, and the discharge side holding member is from the other end of the hollow fiber The above gas is circulated to the above outlet. It has a discharge hole that, the casing further has a delivery port for delivering the oil which passes from the inside to the outside of the hollow fiber to the outside.

  The degassing module according to one aspect of the present invention can properly remove the air bubbles contained in the oil without the need for additional power.

It is a typical sectional view showing a degassing module concerning one embodiment of the present invention.

Description of the embodiment of the present invention
First, the embodiments of the present invention will be listed and described.

  The degassing module according to one aspect of the present invention is a degassing module for removing air bubbles contained in oil transferred by an oil pump, and an inlet for introducing the oil and a gas derived from the air bubbles to the outside A case having a discharge port for discharging, and one or a plurality of hollow hollow fibers which are disposed in the case and extend from the introduction port to the discharge port, and are arranged to seal the introduction port An introduction-side holding member for fixing one end of the hollow fiber, and a discharge-side holding member arranged to seal the discharge port and fixing the other end of the hollow fiber, the introduction side The holding member has an introduction hole for circulating the oil from the introduction port to one end of the hollow fiber, and the discharge side holding member causes the gas to flow from the other end of the hollow fiber to the discharge port The case has an outlet and Further comprising a delivery port delivering the oil passes from the inside of the serial hollow fiber to the outside to the outside.

  The defoaming module distributes the oil introduced from the inlet to one end of the hollow fiber. The hollow fiber allows the oil that has entered inside to permeate to the outside, while discharging the gas derived from the air bubbles contained in this oil from the other end. Then, the oil that has permeated the hollow fiber is sent out from the delivery port to the outside, and the gas discharged from the other end of the hollow fiber is discharged from the discharge port. That is, the said degassing | defoaming module can remove appropriately the air bubbles contained in oil, without requiring additional power by introduce | transducing the oil transferred by an oil pump from an inlet.

  The hollow fiber may be formed in a spiral or meandering shape between the inlet and the outlet. Thereby, since the said long bubble can be arrange | positioned in a case, the said degassing | defoaming module can achieve size reduction.

  The average flow pore diameter of the hollow fiber is preferably 3 μm or more and 40 μm or less. Thereby, the said degassing module can remove air bubbles appropriately with sufficient degassing speed. Here, the mean flow pore size is an index corresponding to the mean value of the pore size, and can be obtained from the measurement result by the bubble point method (ASTM F316-86, JIS-K3832 (1990)) using a pore size distribution measuring instrument etc. . Specifically, the bubble point method measures the relationship between the differential pressure applied to the hollow fiber and the air flow rate permeating the hollow fiber when the hollow fiber is dry and when the hollow fiber is wet with liquid. . The graph obtained by this measurement is taken as the dry curve and the wetting curve, and the differential pressure at the intersection of the curve and the wetting curve with the flow rate of the dry curve being 1⁄2 is P (Pa). The value of d (μm) represented by cγ / P is the mean flow pore size (c is a constant 2860 and γ is the surface tension of the liquid (dynes / cm)).

  The main component of the hollow fiber may be polytetrafluoroethylene. By using polytetrafluoroethylene having high heat resistance and chemical resistance for the hollow fiber, the degassing module exhibits high heat resistance and chemical resistance. Here, the main component indicates a component with the highest content, for example, a component with a content of 50% by mass or more.

  A vehicle according to one aspect of the present invention includes an oil pump, and the above-described degassing module that removes air bubbles contained in oil transferred by the oil pump.

  Since the vehicle includes the degassing module, air bubbles contained in the oil can be appropriately removed without the need for additional power.

Details of the Embodiment of the Present Invention
Hereinafter, the defoaming module and the vehicle according to the embodiment of the present invention will be described with reference to the drawings as appropriate.

First Embodiment
<Defoaming module>
The degassing module 1 of FIG. 1 is a degassing module that removes air bubbles contained in the oil transferred by the oil pump. The degassing module 1 is disposed in the case 2 having an inlet 2a for introducing oil and an outlet 2b for discharging gas derived from air bubbles to the outside, and extends from the inlet 2a to the outlet 2b. An introduction-side holding member 4 which is disposed to seal one or more porous hollow fibers 3 and the introduction port 2a and fixes one end 3a of the hollow fiber 3 and seals the discharge port 2b. And a discharge side holding member 5 for fixing the other end 3 b of the hollow fiber 3. The introduction side holding member 4 has an introduction hole 4 a for flowing oil from the introduction port 2 a to the one end 3 a of the hollow fiber 3. The discharge side holding member 5 has a discharge hole 5 a that allows the gas to flow from the other end 3 b of the hollow fiber 3 to the discharge port 2 b. The case 2 further has a delivery port 2c for delivering the oil permeating from the inside to the outside of the hollow fiber 3 to the outside.

(Case)
The case 2 is a substantially cylindrical container that accommodates the hollow fiber 3 and whose longitudinal direction is the vertical direction. The case 2 is disposed at a lower portion of the main body portion, a cylindrical main body portion, a disk-shaped upper lid portion disposed at an upper portion of the main body portion and fixing the discharge side holding member 5 between the main body portion and And a disk-like bottom lid portion for fixing the introduction side holding member 4 between the main body portion and the main body portion. Further, the case 2 is formed in the bottom cover, is an inlet 2a for introducing oil, is formed in the upper cover, an outlet 2b for discharging gas to the outside, and is formed in a side wall of the main body. And a delivery port 2c for delivery to the vehicle.

(Hollow yarn)
In the case 2, a hollow fiber 3 extending from the inlet 2a to the outlet 2b is disposed. The hollow fiber 3 has an opening at each of the one end 3a and the other end 3b. Although five hollow fibers 3 are schematically shown in FIG. 1, the number of hollow fibers 3 is not limited to five, and in practice, one or more hollow fibers 3 are the case 2 It is disposed inside.

  Although not shown in FIG. 1, the hollow fiber 3 is formed in a spiral or meandering shape between the inlet 2 a and the outlet 2 b. In addition, when many hollow fibers 3 are arrange | positioned in case 2, the hollow fiber 3 does not need to be formed in helical shape or meander shape.

  The hollow fiber 3 is a porous hollow fiber membrane that is permeable to oil and impermeable to air bubbles contained in the oil. The lower limit of the average flow pore diameter of the hollow fiber 3 is preferably 3 μm, more preferably 5 μm, and still more preferably 10 μm. On the other hand, the upper limit of the mean flow pore diameter of the hollow fiber 3 is preferably 40 μm, more preferably 30 μm, and still more preferably 20 μm. If the average flow pore size of the hollow fiber 3 does not reach the above lower limit, there is a possibility that the degassing speed may decrease or that the oil may not permeate the hollow fiber 3. Conversely, when the average flow pore size of the hollow fiber 3 exceeds the upper limit, air bubbles contained in the oil may permeate the hollow fiber 3.

  The hollow fiber 3 is formed of a resin composition. The main component of the hollow fiber 3 is polytetrafluoroethylene. The resin composition forming the hollow fiber 3 may contain other resins and additives such as a lubricant.

(Introduction side holding member)
The introduction side holding member 4 is a disk-shaped member disposed so as to seal the introduction port 2 a, and fixes the one end 3 a of the hollow fiber 3 to the case 2. The introduction side holding member 4 is formed of a potting material such as epoxy resin so as to fill the outer peripheral surface side of the one end 3a of the hollow fiber 3 and distributes the oil from the introduction port 2a to the one end 3a of the hollow fiber 3 It has an introduction hole 4a. The introduction hole 4a may be formed, for example, by filling a potting material so as to cover the one end 3a of the hollow fiber 3 and then removing a part of the potting material so as to expose the one end 3a.

(Discharge side holding member)
The discharge side holding member 5 is a disk-shaped member disposed so as to seal the discharge port 2 b, and fixes the other end 3 b of the hollow fiber 3 to the case 2. The discharge side holding member 5 is formed of a potting material such as epoxy resin so as to fill the outer peripheral surface side of the other end 3 b of the hollow fiber 3, and the gas from the other end 3 b of the hollow fiber 3 to the discharge port 2 b It has the discharge hole 5a to distribute | circulate. For example, after filling the potting material so as to cover the other end 3b of the hollow fiber 3, the discharge hole 5a may be formed by removing a part of the potting material so as to expose the other end 3b.

<How to use Defoaming Module>
The degassing module 1 uses the oil transferred by the oil pump by entering from the inlet 2a. The oil introduced from the introduction port 2a enters the inside of the hollow fiber 3 from one end 3a of the hollow fiber 3, then permeates to the outside of the hollow fiber 3, and is delivered to the outside from the delivery port 2c. On the other hand, air bubbles contained in the oil can not permeate through the hollow fiber 3 and thus move to the other end 3 b of the hollow fiber 3 while growing largely inside the hollow fiber 3 and then become gas to the outside from the discharge port 2 b Exhausted. That is, the oil from which air bubbles have been removed is delivered from the delivery port 2c.

(advantage)
The degassing module 1 is provided with one or more hollow fibers 3 that allow oil to permeate and do not allow air bubbles contained in the oil to pass. Therefore, air bubbles contained in the oil by introducing oil into the hollow fibers 3 Can be separated from the oil. Moreover, the said degassing | defoaming module 1 sends out the oil from which the bubble was removed only from the delivery port 2c only by introduce | transducing the oil transferred by an oil pump from the inlet 2a. That is, the said degassing module 1 can remove the air bubbles contained in oil easily and appropriately, without requiring additional power.

  Further, since the hollow fiber 3 is formed in a spiral shape or meandering shape between the inlet 2 a and the outlet 2 b, the defoaming module 1 can arrange the long hollow fiber 3 in the case 2. Accordingly, the degassing module 1 can be miniaturized.

  In addition, since the average flow pore size of the hollow fiber 3 is within the range suitable for degassing, the degassing module 1 can appropriately remove air bubbles at a sufficient degassing rate.

  Moreover, since the said degassing | defoaming module 1 has high heat resistance and chemical-resistance high polytetrafluoroethylene as a main component of the hollow fiber 3, it shows high heat resistance and chemical resistance. For this reason, the said degassing module 1 can use the oil containing a high temperature state oil and various additives.

Second Embodiment
<Vehicle>
The said vehicle is a vehicle provided with the degassing module 1 of 1st embodiment. That is, the said vehicle is provided with the oil pump and the degassing module 1 which removes the bubble contained in the oil transferred by this oil pump. As the oil, oil such as lubricating oil, hydraulic oil or engine oil is used.

  The said vehicle is equipped with the degassing module 1 so that the longitudinal direction of the degassing module 1 may substantially correspond with the horizontal direction of a vehicle. That is, the said vehicle is equipped with the degassing module 1 so that the height of the inlet 2a of the substantially cylindrical case 2 and the height of the discharge port 2b may correspond substantially. The said vehicle can ensure easily the installation space of the degassing module 1 in a vehicle by providing the degassing module 1 in such direction.

  If all of the oil that has entered the hollow fiber 3 does not permeate the hollow fiber 3 and there is a concern that the oil will flow out from the discharge port 2b, the vehicle concerned refluxes the oil from the discharge port 2b to the oil pump It may further comprise a flow path.

(advantage)
Since the vehicle is equipped with the degassing module 1, air bubbles contained in the oil can be appropriately removed without the need for additional power. Therefore, the said vehicle can implement easily the deaeration process of the oil in the vehicle which was not examined because it is difficult to implement | achieve.

[Other embodiments]
It should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is not limited to the configurations of the above embodiments, but is indicated by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. Ru.

  In the first embodiment, the introduction port 2a is formed in the lower part of the case 2, the discharge port 2b is formed in the upper part of the case 2, and the delivery port 2c is formed in the side wall of the case 2. The arrangement of the port 2a, the outlet 2b and the outlet 2c is not limited to these. For example, the inlet 2a may be formed in a part of the side wall of the case 2, the outlet 2b may be formed in the upper part of the case 2, and the outlet 2c may be formed in another part of the side wall of the case 2. However, from the viewpoint of easily discharging the gas derived from the bubbles contained in the oil, the outlet 2 b is preferably formed in the upper portion or the side wall of the case 2. Further, from the viewpoint of easily delivering the oil after degassing, the delivery port 2c is preferably formed in the lower portion or the side wall of the case 2.

  The degassing module according to one aspect of the present invention can properly remove the air bubbles contained in the oil without the need for additional power.

DESCRIPTION OF SYMBOLS 1 deaeration module 2 case 2a introduction port 2b discharge port 2c delivery port 3 hollow fiber 3a one end 3b other end 4 introduction side holding member 4a introduction hole 5 discharge side holding member 5a discharge hole

Claims (5)

A degassing module for removing air bubbles contained in oil transferred by an oil pump, comprising:
A case having an inlet for introducing the oil and an outlet for discharging the gas derived from the air bubbles to the outside;
Porous one or more hollow fibers disposed in the case and extending from the inlet to the outlet;
An introduction side holding member disposed to seal the introduction port and fixing one end of the hollow fiber;
And a discharge side holding member disposed to seal the discharge port and fixing the other end of the hollow fiber.
The introduction side holding member has an introduction hole for circulating the oil from the introduction port to one end of the hollow fiber,
The discharge side holding member has a discharge hole for circulating the gas from the other end of the hollow fiber to the discharge port,
The degassing module further comprising a delivery port for delivering the oil permeating from the inside to the outside of the hollow fiber.   The defoaming module according to claim 1, wherein the hollow fiber is formed in a spiral shape or a meandering shape between the inlet and the outlet.   The degassing module according to claim 1 or 2, wherein an average flow pore diameter of the hollow fiber is 3 μm or more and 40 μm or less.   The defoaming module according to claim 1, wherein the main component of the hollow fiber is polytetrafluoroethylene. An oil pump,
The degassing module according to any one of claims 1 to 4, wherein air bubbles contained in oil transferred by the oil pump are removed.

Images