Engine oil bubble eliminating device, external engine oil tank and engine system

Abstract

The utility model relates to the technical field of engines, and discloses an engine oil bubble eliminating device, an external engine oil tank and an engine system.The engine oil bubble eliminating device comprises a bubble eliminating bin body which extends in the first direction, and an oil passing opening is formed in a bottom plate of the bubble eliminating bin body; the first end of the oil return pipe is communicated with the engine body, and the second end is communicated with the inner cavity; in the first direction, the inner wall of the side, deviating from the oil return pipe, of the defoaming bin body is a first arc-shaped inner wall, and the first arc-shaped inner wall sinks towards the side deviating from the oil return pipe. In the working process, engine oil enters from the first end of the oil return pipe and is sprayed out from the second end until the engine oil makes contact with the first arc-shaped inner wall and then continues to flow at a high speed in the extending direction of the first arc-shaped inner wall, so that rotational flow is formed, and a large number of bubbles in the engine oil are eliminated under the action of centrifugal force; and finally, the engine oil flows into the external engine oil tank body through the oil passing port, so that bubbles contained in the engine oil during oil return can be greatly eliminated, and faults such as oil injection of the oil-gas separator are effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine, especially relates to an oil bubble eliminating device, an external oil tank and an engine system. BACKGROUND

[0002] The engine usually needs to be lubricated by oil during operation, and the oil is stored in the oil pan or the external oil tank of the engine.

[0003] The oil pump of the external oil tank in the prior art has too strong pumping capacity, which can guarantee the oil return efficiency, but also causes a large number of air bubbles in the oil during the oil return process, and the oil containing a large number of air bubbles eventually causes oil and gas separator oil injection failure.

[0004] Therefore, how to eliminate the air bubbles generated by the oil in the external oil tank of the engine during the oil return process has become a technical problem to be solved in the field. UTILITY MODEL CONTENTS

[0005] The utility model aims at least solve how to eliminate the air bubbles generated by the oil in the external oil tank of the engine during the oil return process. The purpose is realized by the following technical scheme:

[0006] In the first aspect, the utility model provides an oil bubble eliminating device, which is suitable for the external oil tank body configured by the engine body, and the oil bubble eliminating device comprises: a defoaming bin body extending along a first direction, the defoaming bin body has an inner cavity, the defoaming bin body comprises a top plate and a bottom plate arranged along a second direction with the top plate, the second direction is perpendicular to the first direction, the bottom plate is provided with an oil passage for connecting the inner cavity with the external oil tank body, and an oil return pipe, the first end of the oil return pipe is used for being communicated with the engine body, the second end of the oil return pipe is communicated with the inner cavity, and the part of the oil return pipe extending into the inner cavity extends along the first direction.

[0007] The oil gas bubble eliminating device is assembled by connecting the first end of the oil return pipe with the engine body and connecting the inner cavity of the bubble eliminating bin body with the external oil tank body through the oil passing port.

[0008] In some embodiments of the present application, the part of the oil return pipe extending into the inner cavity is located on the side of the inner cavity close to the top plate in the second direction.

[0009] In some embodiments of the present application, the deflector plate is provided with a through hole.

[0010] In some embodiments of the present application, two deflector plates are arranged in the inner cavity in the second direction.

[0011] In some embodiments of the present application, the bubble eliminating bin body is provided with a gas permeation hole for connecting the inner cavity with the outside.

[0012] In some embodiments of the present application, the gas permeation hole is arranged on the top plate, and the inner cavity is provided with an oil baffle for preventing the oil from splashing out of the bubble eliminating bin body through the gas permeation hole.

[0013] In some embodiments of the present application, the oil baffle is provided with a gas passage hole.

[0014] In some embodiments of the present application, the oil gas bubble eliminating device further comprises a base fixedly connected with the bubble eliminating bin body, the base is located on the side of the bubble eliminating bin body away from the top plate in the second direction, and the part of the base corresponding to the inner cavity constitutes the bottom plate.

[0015] In the second aspect, the present application provides an external oil tank, which comprises an external oil tank body and any of the oil gas bubble eliminating devices described above, and the inner cavity of the bubble eliminating bin body is connected with the external oil tank body through the oil passing port.

[0016] The third aspect discloses an engine system, which comprises an engine body and the external engine oil tank.

[0017] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in the attached drawings refer to the same or like components throughout the several drawings. In the drawings:

[0019] Figure 1 A structural schematic diagram of the oil bubble elimination device provided by the embodiment of the present application is shown in the figure.

[0020] Figure 2 An internal structure schematic diagram of the oil bubble elimination device provided by the embodiment of the present application is shown in the figure.

[0021] Figure 3 A partial structure sectional view of the oil bubble elimination device provided by the embodiment of the present application is shown in the figure.

[0022] Figure 4 The oil bubble elimination device provided by the embodiment of the present application is shown in the figure. Figure 3 The movement trajectory of the oil bubble elimination device provided by the embodiment of the present application is shown in the figure.

[0023] The reference signs are as follows:

[0024] 1000, oil bubble elimination device;

[0025] 100, defoaming bin body; 110, top plate; 111, air vent hole; 130, side plate; 131, balance hole; 101, first arc-shaped inner wall; 102, second arc-shaped inner wall; 1001, inner cavity;

[0026] 200, oil return pipe;

[0027] 300, flow guide plate; 310, first plate; 320, second plate; 301, through hole;

[0028] 400, oil baffle; 401, air hole;

[0029] 500, base; 501, mounting hole. DETAILED DESCRIPTION

[0030] Exemplary embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings. While example embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0031] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and the like are to be construed to be inclusive (i.e., to include both instances of open ended terms and instances of terms limiting to a specific number) unless otherwise indicated as otherwise limited by context. The methods described herein can be implemented as a method, an apparatus, a system, a computer program product, computer-readable medium, computer program, or a combination thereof.

[0032] Although the terms first, second, third, and the like can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0033] For the sake of description, spatial relative terms can be used herein for describing a relationship of one element or feature to another element or feature as illustrated in the drawings, such as "inner", "outer", "inner side", "outer side", "under", "below", "above", "on", and the like. Such spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device is turned over, then an element described as "below" or "beneath" another element or feature would then be oriented "above" or "over" the other element or feature. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0034] Figure 1 A structural schematic view of the oil bubble eliminating device provided by the embodiment of the present application is shown in the figure. Figure 2 An internal structural schematic view of the oil bubble eliminating device provided by the embodiment of the present application is shown in the figure. Figure 3 A partial structural sectional view of the oil bubble eliminating device provided by the embodiment of the present application is shown in the figure. Figure 4 The oil is in Figure 3 The movement track of the oil under the perspective view is shown in the figure. Figures 1 to 4 The embodiment of the present application provides an oil bubble eliminating device 1000, which is suitable for an external oil tank body configured by an engine body, and the oil bubble eliminating device 1000 comprises: a defoaming bin body 100 extending along a first direction, the defoaming bin body 100 has an inner cavity 1001, the defoaming bin body 100 comprises a top plate 110 and a bottom plate arranged along a second direction with the top plate 110, the second direction is perpendicular to the first direction, and the bottom plate is provided with an oil outlet (not shown in the figure) for enabling the inner cavity 1001 to communicate with the external oil tank body; and an oil return pipe 200, a first end of the oil return pipe 200 is used for communicating with the engine body, a second end of the oil return pipe 200 communicates with the inner cavity 1001, and a part of the oil return pipe 200 extending into the inner cavity 1001 extends along the first direction; along the first direction, an inner wall of a side of the defoaming bin body 100 away from the oil return pipe 200 is a first arc-shaped inner wall 101, and the first arc-shaped inner wall 101 is recessed towards the side away from the oil return pipe 200.

[0035] In this embodiment, during assembly, the first end of the oil return pipe 200 of the oil bubble elimination device 1000 is connected to the engine body, and the inner cavity 1001 of the defoaming chamber 100 is connected to the external oil tank body through the oil inlet. During operation, when oil containing air bubbles enters the oil return pipe 200 from the first end, the oil is sprayed from the second end of the oil return pipe 200 along a path away from the oil return pipe 200 in a first direction into the inner cavity 1001 of the defoaming chamber 100. The oil continues to flow at high speed along the extending direction of the first arc-shaped inner wall 101 of the defoaming chamber 100 until it contacts the first arc-shaped inner wall 101, thus forming a swirling flow (the oil flow direction can be referenced). Figure 4 (Dashed arrow in the middle) and under the action of centrifugal force, a large number of air bubbles in the oil are eliminated. Then the oil flows to the bottom plate of the defoaming chamber 100, and finally the oil flows from the inner cavity 1001 into the external oil tank body through the oil outlet on the bottom plate.

[0036] Therefore, this oil bubble elimination device 1000 can eliminate a large number of air bubbles contained in the oil when returning oil by applying centrifugal force to the oil, thereby effectively reducing the probability of oil-gas separator injection and other malfunctions, and thus ensuring the overall working efficiency of the engine system to a certain extent.

[0037] refer to Figure 3 It is easy to understand that, since the oil flows very fast in the inner cavity 1001 of the receiving chamber, along the first direction, the inner wall of the defoaming chamber 100 on the side away from the first arc-shaped inner wall 101 can be set as the second arc-shaped inner wall 102, that is, the second arc-shaped inner wall 102 is recessed towards the side away from the first arc-shaped inner wall 101. Thus, when the engine oil enters the inner cavity 1001 of the defoaming chamber 100, it first comes into contact with the first arc-shaped inner wall 101 of the defoaming chamber 100 and flows at high speed along the extension direction of the first arc-shaped inner wall 101 to form a vortex. After the engine oil flows past the first inner wall, it continues to flow along the inner wall of the defoaming chamber 100 in the first direction to the second arc-shaped inner wall 102. Similarly, at this time, the engine oil will flow at high speed along the extension direction of the second arc-shaped inner wall 102 to form a vortex. Therefore, the setting of the second arc-shaped inner wall 102 can further increase the number of times the engine oil is subjected to centrifugal force, thereby further eliminating the air bubbles contained in the engine oil.

[0038] like Figure 1 and Figure 2 As shown, in an optional embodiment of the present invention, along the second direction, the portion of the oil return pipe 200 extending into the inner cavity 1001 is located on the side of the inner cavity 1001 near the top plate 110; at least one guide plate 300 is provided in the inner cavity 1001, and the guide plate 300 is used to guide the oil to the bottom plate.

[0039] In this embodiment, it is easy to understand that due to the presence of resistance, the engine oil will not always maintain a high-speed flow in the inner cavity 1001 of the defoaming bin body 100, and the engine oil will finally move downward under the action of its own gravity, and the flow guide plate 300 plays a guiding role for the engine oil in this process; in addition, when the engine oil falls, it will collide with the flow guide plate 300, and the collision process can also eliminate part of the residual bubbles in the engine oil.

[0040] Therefore, the arrangement of the flow guide plate 300 can ensure that the engine oil can finally flow to the bottom plate, further improve the efficiency of eliminating bubbles in the engine oil, thereby further reducing the probability of oil and gas separator oil injection failure, and further effectively ensuring the overall working efficiency of the engine system.

[0041] Referring to Figure 3 , as an optional embodiment of the utility model, the flow guide plate 300 is provided with a through hole 301.

[0042] In this embodiment, when the engine oil drips to the flow guide plate 300 under the action of its own gravity, due to the presence of the through hole 301, it can better eliminate the residual bubbles in the engine oil; in addition, the engine oil can also pass through the through hole 301 and continue to drip downward to the bottom plate, and then finally flow into the external engine oil tank body from the inner cavity 1001 through the oil passing hole on the bottom plate, thereby accelerating the oil return time and improving the oil return efficiency.

[0043] Among them, multiple through holes 301 can be arranged on the flow guide plate 300, such as Figure 3 as shown, so as to improve the efficiency of defoaming and filtering (i.e. making the engine oil after eliminating bubbles drip downward) of the engine oil.

[0044] In addition, it is easy to understand that multiple through holes 301 can be uniformly and evenly arranged to further improve the efficiency of defoaming and filtering of the engine oil; and the shape of the through hole 301 is not limited, and can be determined according to the actual working condition requirements.

[0045] As an optional embodiment of the utility model, two flow guide plates 300 are arranged in the inner cavity 1001, and the two flow guide plates 300 are arranged along the second direction.

[0046] As shown in Figure 2 and Figure 3As shown, in the embodiment, for the convenience of description, the two flow guides 300 are respectively referred to as a first plate 310 and a second plate 320; in assembly, the right end of the first plate 310 can be connected with the first arc-shaped inner wall 101, and the left end of the first plate 310 is lower than the right end, that is, the first plate 310 is arranged as a whole to be inclined relative to the first direction, so that the oil can slowly flow downward along the first plate 310; similarly, the left end of the second plate 320 can be connected with the second arc-shaped inner wall 102, and the right end of the second plate 320 is lower than the left end, that is, the second plate 320 is arranged as a whole to be inclined relative to the first direction, so that the oil can slowly flow downward along the second plate 320.

[0047] It is easy to understand that the relative relationship between the left end of the first plate 310 (that is, the lowest end of the first plate 310) and the left end of the second plate 320 (that is, the highest end of the second plate 320) needs to meet that there is a sufficient gap between them in the first direction and the second direction, so as to realize that the oil can flow from the first plate 310 to the second plate 320.

[0048] Therefore, in the embodiment, before the oil flows from the oil passage on the bottom plate into the external oil tank body from the inner cavity 1001, the oil needs to pass through the defoaming / filtration treatment of the two flow guides 300, so that the bubbles contained in the oil can be more effectively eliminated, thereby further reducing the probability of oil injection failure of the oil-gas separator and further more effectively guaranteeing the working efficiency of the engine system as a whole.

[0049] It should be noted that the embodiment only takes the two flow guides 300 arranged in the inner cavity 1001 as an example for illustration, and in actual working conditions, the specific number of the flow guides 300 should be determined according to the working condition requirements, for example, three, four or more flow guides 300 can be arranged in the second direction at intervals, and the specific arrangement mode can refer to the arrangement mode of the two flow guides 300 described above, which will not be described herein again, which can guarantee that the bubbles contained in the oil can be more effectively eliminated without affecting the overall efficiency of the oil return process.

[0050] Reference Figure 1 As an optional embodiment of the utility model, the defoaming bin body 100 is provided with a gas permeable hole 111 for connecting the inner cavity 1001 with the outside.

[0051] In the embodiment, since the oil bubble elimination device 1000 can eliminate a large amount of bubbles in the oil during the oil return process, in order to guarantee that the air pressure inside and outside the defoaming bin body 100 (that is, the air pressure in the inner cavity 1001 and the external atmospheric environment) is consistent, so as to guarantee the connectivity of the subsequent oil return path, the gas permeable hole 111 is arranged on the defoaming bin body 100, so as to connect the inner cavity 1001 with the outside.

[0052] Continue to refer to Figure 1As an optional embodiment of the utility model, balance hole 131 can also be arranged on the side plate 130 of the defoaming bin body 100, and the inner cavity 1001 is communicated with the outside through the balance hole 131. The arrangement of the balance hole 131 can further ensure that the air pressure inside and outside the defoaming bin body 100 is consistent, and further ensure the connectivity of the subsequent oil return path. In addition, if too much oil accumulates on the bottom plate of the defoaming bin body 100, causing the oil to be unable to continue to flow from the inner cavity 1001 into the external oil tank body through the oil outlet on the bottom plate, the oil level will continue to rise at this time, and when the oil level rises to the balance hole 131, the oil can still flow out of the inner cavity 1001 through the balance hole 131 and finally flow into the external oil tank body.

[0053] Therefore, the arrangement of the balance hole 131 balances the air pressure inside and outside the defoaming bin body 100 to ensure the connectivity of the subsequent oil return path, and also increases the flow path of the oil flowing into the external oil tank body, preventing the occurrence of the phenomenon that the oil cannot be continuously returned due to too much oil in the inner cavity 1001.

[0054] As shown in Figures 1 to 3 As an optional embodiment of the utility model, the air hole 111 is arranged on the top plate 110, and the inner cavity 1001 is provided with an oil baffle 400, which is used to prevent the oil from splashing out of the defoaming bin body 100 through the air hole 111.

[0055] In the embodiment, as described above, the oil will generate a rotational flow when flowing at a high speed in the inner cavity 1001 of the defoaming bin body 100, and will further collide with the flow guide plate 300, relying on the two ways to eliminate the air bubbles in the oil. However, the oil splashing will occur more or less during the flow of the oil. In order to prevent the oil from splashing out of the inner cavity 1001 through the air hole 111, the oil baffle 400 is arranged in the inner cavity 1001.

[0056] Referring to Figure 2 Specifically, taking the air hole 111 arranged on the top plate 110 as an example, the oil baffle 400 is arranged between the air hole 111 and the flow guide plate 300 located at the uppermost layer in the second direction. Since the oil baffle 400 is located above the flow guide plate 300, it will not affect the defoaming and guiding effect of the flow guide plate 300 on the oil. Since the oil baffle 400 is located below the air hole 111, when the oil has a tendency to splash out of the inner cavity 1001 through the air hole 111, the oil baffle 400 will block the splashing oil, thereby effectively reducing the phenomenon of the oil splashing out of the defoaming bin body 100 through the air hole 111.

[0057] As shown in Figure 3 As an optional embodiment of the utility model, the oil baffle 400 is provided with an air hole 401.

[0058] In the embodiment, the air vent hole 111 is arranged on the top plate 110, and the oil blocking plate 400 is arranged between the air vent hole 111 and the flow guide plate 300 located at the uppermost layer in the second direction.

[0059] It is easy to understand that the air vent hole 401 can be multiple, and the multiple air vent holes 401 can be uniformly and spacedly arranged, for example, Figure 3 As shown, the shape and size of the air vent hole 401 are not limited, and in actual working conditions, the shape and size of the air vent hole 401 can be determined according to the working condition requirements.

[0060] Referring to Figures 1 to 3 As an optional embodiment of the utility model, the oil bubble eliminating device 1000 further comprises a base 500 fixedly connected with the defoaming chamber 100, and the base 500 is located at a side of the defoaming chamber 100 away from the top plate 110 in the second direction, and a part of the base 500 corresponding to the inner cavity 1001 constitutes a bottom plate.

[0061] In the embodiment, the base 500 can be used as a structure for connecting the oil bubble eliminating device 1000 as a whole with the engine body and the external oil tank body, for example, the normal projection of the defoaming chamber 100 and the oil return pipe 200 is located within the contour of the base 500 in the second direction, and a plurality of mounting holes 501 can be arranged around the circumferential direction of the base 500 to meet the assembly of the oil bubble eliminating device 1000 with the engine body and the external oil tank body.

[0062] It is easy to understand that the first end of the oil return pipe 200 can be fixedly connected with the base 500 and penetrate through the base 500, which can not only ensure that the first end of the oil return pipe 200 can communicate with the engine body, but also improve the integration of the oil bubble eliminating device 1000 as a whole.

[0063] Therefore, the arrangement of the base 500 can improve the integration of the oil bubble eliminating device 1000 as a whole, and further improve the assembly convenience.

[0064] The utility model embodiment further provides an external oil tank, which comprises an external oil tank body and any one of the oil bubble eliminating devices 1000, and the inner cavity 1001 of the defoaming chamber 100 communicates with the external oil tank body through the oil outlet.

[0065] In the embodiment, the external engine oil tank has the same beneficial effects as the beneficial effects of any one of the oil bubble eliminating devices 1000 described above, and can eliminate a large amount of bubbles contained in engine oil during oil return, thereby effectively reducing the probability of oil mist separator oil injection failure and the like, and further ensuring the working efficiency of the engine system as a whole.

[0066] The utility model embodiment further provides an engine system, the engine system includes engine body and above external engine oil tank, the first end of oil return pipe 200 is linked together with engine body.

[0067] In the embodiment, the engine system has the same beneficial effects as the beneficial effects of the external engine oil tank described above, and can reduce bubbles generated during oil return, and finally ensure the working efficiency of the engine system as a whole, and details are not repeated.

[0068] The above is only a preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. An oil gas bubble eliminating device suitable for an external oil tank body configured to an engine body, characterized by, The oil bubble eliminating device comprises: a defoaming bin body extending along a first direction, the defoaming bin body having an inner cavity, the defoaming bin body comprising a top plate and a bottom plate arranged along a second direction with the top plate, the second direction being perpendicular to the first direction, the bottom plate being provided with an oil passage opening for allowing the inner cavity to communicate with the external oil tank body; and an oil return pipe, a first end of the oil return pipe being used for communicating with the engine body, a second end of the oil return pipe communicating with the inner cavity, a portion of the oil return pipe extending into the inner cavity extending along the first direction; along the first direction, an inner wall of a side of the defoaming bin body away from the oil return pipe being a first arc-shaped inner wall, the first arc-shaped inner wall being concave toward the side away from the oil return pipe.

2. The engine oil bubble eliminating device according to claim 1, characterized by along the second direction, the portion of the oil return pipe extending into the inner cavity being located at a side of the inner cavity close to the top plate; the inner cavity being provided with at least one flow guide plate, the flow guide plate being used for guiding oil to the bottom plate.

3. The engine oil bubble eliminating device according to claim 2, characterized by the flow guide plate being provided with a through hole.

4. The engine oil bubble eliminating device according to claim 3, characterized by the inner cavity being provided with two flow guide plates, the two flow guide plates being arranged at intervals along the second direction.

5. The engine oil bubble eliminating device according to claim 1, characterized by the defoaming bin body being provided with a gas permeation hole for allowing the inner cavity to communicate with the outside.

6. The engine oil bubble eliminating device according to claim 5, characterized by the gas permeation hole being arranged at the top plate, the inner cavity being provided with an oil blocking plate, the oil blocking plate being used for preventing oil from splashing out of the defoaming bin body through the gas permeation hole.

7. The engine oil bubble eliminating device according to claim 6, characterized by the oil blocking plate being provided with a gas permeation hole.

8. The engine oil bubble eliminating device according to any one of claims 1 to 7, characterized by the oil bubble eliminating device further comprising a base fixedly connected with the defoaming bin body, along the second direction, the base being located at a side of the defoaming bin body away from the top plate, a portion of the base corresponding to the inner cavity constituting the bottom plate.

9. An external oil tank, characterized in that comprising an external oil tank body and the oil bubble eliminating device according to any one of claims 1-8, the inner cavity of the defoaming bin body communicating with the external oil tank body through the oil passage opening.

10. An engine system characterized by, comprising an engine body and the external oil tank according to claim 9, the first end of the oil return pipe communicating with the engine body.

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