An oil heat exchanger

Abstract

This utility model discloses a lubricating oil heat exchanger, including a heat exchange assembly comprising an oil inlet chamber, an oil inlet connected to the oil inlet chamber, an oil outlet chamber located next to the oil inlet chamber, an oil outlet connected to the oil outlet chamber, a fixing plate symmetrically fixed to the outer walls of the oil inlet chamber and the oil outlet chamber, a double-ended through-hole oil pipe with one end connected to the oil inlet chamber and the other end connected to the oil outlet chamber, a sealing plate symmetrically fixed between two adjacent double-ended through-hole oil pipes, and a ventilation cavity formed by the sealing plate and the outer wall assembly of the double-ended through-hole oil pipes; an air inlet assembly comprising an air inlet hood fixed to the fixing plate, a circular air inlet fixed to the air inlet hood, and a dust filter installed on the outer wall of the circular air inlet; and a cleaning assembly. This lubricating oil heat exchanger can block some impurities in the air and reduce the amount of cold air entering, thus avoiding a significant drop in the temperature of the lubricating oil.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to a lubricating oil heat exchanger. Background Technology

[0002] In unmanned aerial vehicles (UAVs), especially large, long-endurance, or high-performance ones, the engines and transmission systems generate a significant amount of heat during high-speed operation. Lubricating oil circulates in these systems, serving not only a lubricating function but, more importantly, carrying away the enormous heat generated by friction and combustion. The role of the lubricating oil heat exchanger is to efficiently transfer this excess heat from the lubricating oil to the outside air, maintaining the lubricating oil temperature within its optimal operating range. If the oil temperature is too high, the viscosity of the lubricating oil will decrease, leading to poor lubrication, increased wear, and even catastrophic failures such as engine overheating and cylinder seizure, and gear pitting. Therefore, the lubricating oil heat exchanger is a critical component for ensuring the reliable and sustained operation of the UAV's power system.

[0003] Most of the lubricating oil heat exchangers used on drones are air-cooled plate-fin heat exchangers, which directly introduce air into the heat exchanger to cool the lubricating oil. However, the outside air may contain impurities, and if too many impurities enter the heat exchanger, it will affect the heat exchange effect.

[0004] Secondly, the air inlet of a heat exchanger is usually a completely unobstructed opening, making it inconvenient to adjust the amount of air intake. When a drone is flying in the air, it may encounter very cold air. If the heat exchanger draws in a large amount of cold air, it will cause the temperature of the lubricating oil to drop too low, resulting in an increase in the viscosity of the lubricating oil and a reduction in its lubrication effect. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] 1. Technical problems to be solved:

[0007] To address the issues mentioned above, such as the potential for impurities in the external air, which can negatively impact heat exchange efficiency if a large amount of impurities enter the heat exchanger, and the potential for excessively low lubricating oil temperature and increased viscosity due to the large intake of cold air, this invention is proposed.

[0008] Therefore, the purpose of this utility model is to provide a lubricating oil heat exchanger with the following advantages: it can prevent dust from impurities in the air to a certain extent and control the air intake flow rate, thus avoiding the intake of a large amount of cold air in a short period of time.

[0009] 2. Technical Solution:

[0010] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0011] An oil heat exchanger, comprising:

[0012] The heat exchange assembly includes an oil inlet chamber, an oil inlet connected to the oil inlet chamber, an oil outlet chamber located next to the oil inlet chamber, an oil outlet connected to the oil outlet chamber, a fixing plate symmetrically fixed to the outer walls of the oil inlet chamber and the oil outlet chamber, a double-ended through-hole oil pipe with one end connected to the oil inlet chamber and the other end connected to the oil outlet chamber, a sealing plate symmetrically fixed between two adjacent double-ended through-hole oil pipes, and a ventilation cavity composed of the sealing plate and the outer wall assembly of the double-ended through-hole oil pipe;

[0013] The air intake assembly includes an air intake hood fixed to the fixed plate, a circular air inlet fixed to the air intake hood, and a dust filter installed on the outer wall of the circular air inlet;

[0014] A cleaning component, located on the circular air inlet, can clean the dust filter.

[0015] As a preferred embodiment of the lubricating oil heat exchanger described in this utility model, the cleaning assembly includes a rotating ring rotatably mounted on the outer wall of the circular air inlet, teeth evenly fixed on the outer wall of the rotating ring, a pad fixed on the outer wall of the circular air inlet, a first stepper motor fixed on the pad, a first rotating rod coaxially connected to the output end of the first stepper motor, a toothed ring fixed on the first rotating rod and meshing with the teeth, and a cleaning brush connected to the outer wall of the rotating ring and attached to the surface of the dust filter.

[0016] As a preferred embodiment of the lubricating oil heat exchanger described in this utility model, the air inlet assembly further includes a second stepper motor fixed on the outer wall of the circular air inlet, a second rotating rod rotatably mounted on the circular air inlet and coaxially connected to the output end of the second stepper motor, and a semi-circular baffle fixed on the second rotating rod.

[0017] As a preferred embodiment of the lubricating oil heat exchanger described in this utility model, connecting plates are symmetrically fixed on the side wall of the dust filter, and the connecting plates are fixed to the circular air inlet by the first bolt.

[0018] As a preferred embodiment of the lubricating oil heat exchanger described in this utility model, inclined guide plates are evenly fixed on the upper and lower inner walls of the double-ended through-hole oil pipe.

[0019] As a preferred embodiment of the lubricating oil heat exchanger described in this utility model, heat dissipation fins are uniformly fixed on the outer wall of the double-ended through-hole oil pipe, and the heat dissipation fins are located in the inner cavity of the ventilation chamber.

[0020] In a preferred embodiment of the lubricating oil heat exchanger described in this utility model, the cleaning brush is fixed to the outer wall of the rotating ring by a second bolt.

[0021] 3. Beneficial effects:

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] 1. This type of lubricating oil heat exchanger can block some impurities in the air through a dust filter, and the dust filter can be reduced by cleaning the dust filter with a brush.

[0024] Second, this type of lubricating oil heat exchanger uses a second stepper motor to drive a second rotating rod to rotate, which in turn drives a semi-circular baffle to rotate and block part of the circular air inlet, thereby reducing the air intake and reducing the amount of cold air entering, thus avoiding a significant drop in the temperature of the lubricating oil. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0026] Figure 1 This is a schematic diagram of the overall structure of a lubricating oil heat exchanger according to the present invention;

[0027] Figure 2 This is a cross-sectional view of a lubricating oil heat exchanger according to the present invention in the first direction;

[0028] Figure 3 This is a cross-sectional view of a lubricating oil heat exchanger according to the present invention in a second direction;

[0029] Figure 4 This utility model relates to a stirring mechanism for a lubricating oil heat exchanger. Figure 2 A magnified view of part A in the image;

[0030] Figure 5 This is a schematic diagram of the cleaning assembly of a lubricating oil heat exchanger according to the present invention.

[0031] The following are the labeling instructions in the diagram: 100, Heat exchange assembly; 110, Oil inlet; 110a, Oil inlet; 120, Oil outlet; 120a, Oil outlet; 130, Fixing plate; 140, Double-ended through-hole oil pipe; 140a, slanted guide plate; 150, Sealing plate; 160, Ventilation cavity; 160a, Heat dissipation fins; 200, Air inlet assembly; 210, Air inlet shroud; 220, Circular air inlet; 230, Dust filter; 230a, Connecting plate; 230b, First bolt; 240, Second stepper motor; 250, Second rotating rod; 260, Semicircular baffle; 300, Cleaning assembly; 310, Rotating ring; 320, Tooth; 330, Pad; 340, First stepper motor; 350, First rotating rod; 360, Toothed ring; 370, Cleaning brush. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0033] Figures 1-5 The diagram shown is a structural schematic of one embodiment of the lubricating oil heat exchanger of this utility model. Please refer to [link / reference]. Figures 1-5 This utility model discloses a lubricating oil heat exchanger, the main body of which includes a heat exchange component 100, an air inlet component 200, and a cleaning component 300.

[0034] The heat exchange assembly 100, welded or bolted to the UAV, includes an oil inlet 110, an oil inlet 110a connected to the oil inlet 110, an oil outlet 120 located next to the oil inlet 110, an oil outlet 120a connected to the oil outlet 120, a fixing plate 130 symmetrically welded and fixed to the outer walls of the oil inlet 110 and the oil outlet 120, a double-ended through-hole oil pipe 140 with one end connected to the oil inlet 110 and the other end connected to the oil outlet 120, a sealing plate 150 symmetrically welded and fixed between two adjacent double-ended through-hole oil pipes 140, and a ventilation cavity 160 composed of the sealing plate 150 and the outer wall of the double-ended through-hole oil pipe 140; wherein, heat dissipation fins 160a are uniformly fixed on the outer wall of the double-ended through-hole oil pipe 140, and the heat dissipation fins 160a are located in the inner cavity of the ventilation cavity 160 to increase the heat exchange effect.

[0035] The air intake assembly 200 includes an air intake hood 210 welded and fixed to a fixed plate 130, a circular air inlet 220 welded and fixed to the air intake hood 210, and a dust filter 230 installed on the outer wall of the circular air inlet 220; the air intake assembly 200 also includes a second stepper motor 240 fixed to the outer wall of the circular air inlet 220 by bolts, a second rotating rod 250 rotatably installed on the circular air inlet 220 and coaxially connected to the output end of the second stepper motor 240, and a semi-circular baffle 260 welded and fixed to the second rotating rod 250;

[0036] A cleaning assembly 300 is installed on a circular air inlet 220 and can clean the dust filter 230. The cleaning assembly 300 includes a rotating ring 310 rotatably mounted on the outer wall of the circular air inlet 220, teeth 320 uniformly welded and fixed on the outer wall of the rotating ring 310, a pad 330 welded and fixed on the outer wall of the circular air inlet 220, a first stepper motor 340 fixed to the pad 330 by bolts, a first rotating rod 350 coaxially connected to the output end of the first stepper motor 340, a toothed ring 360 fixed to the first rotating rod 350 by keyways and splines and meshing with the teeth 320, and a cleaning brush 370 connected to the outer wall of the rotating ring 310 and attached to the surface of the dust filter 230.

[0037] Furthermore, to facilitate the disassembly and installation of the dust filter 230, specifically, a connecting plate 230a is symmetrically welded and fixed on the side wall of the dust filter 230, and the connecting plate 230a is fixed to the circular air inlet 220 by the first bolt 230b.

[0038] Meanwhile, in order to increase the residence time of lubricating oil in the inner cavity of the double-ended through-hole oil pipe 140, specifically, inclined guide plates 140a are evenly fixed on the upper and lower inner walls of the double-ended through-hole oil pipe 140, and the lubricating oil flows along the inclined guide plates 140a, thereby increasing the flow path.

[0039] Finally, to facilitate the disassembly and installation of the cleaning brush 370, specifically, the cleaning brush 370 is fixed to the outer wall of the rotating ring 310 by the second bolt. After a period of use, dust and other impurities will stick to the bristles of the cleaning brush 370. At this time, it is necessary to unscrew the second bolt, remove the cleaning brush 370 for cleaning, or directly replace it with a new cleaning brush 370.

[0040] Combination Figures 1-5 The specific implementation method of this lubricating oil heat exchanger is as follows:

[0041] 1. First, during the flight of the drone, the outside air will pass through the dust filter 230 and enter the circular air inlet 220, and then through each ventilation cavity 160. At this time, the high temperature of the lubricating oil is pumped into the oil tank 110. The lubricating oil is cooled by the air through each double-ended through hole and oil pipe 140, and finally enters the oil outlet 120 and is pumped back into the drone from the oil outlet 120a.

[0042] 2. Then, when it is necessary to clean the dust filter 230, turn on the first step motor 340 to drive the first rotating rod 350 to rotate, drive the gear ring 360 and the rotating ring 310 to rotate, thereby driving the cleaning brush 370 to rotate and clean the dust filter 230.

[0043] 3. Finally, when encountering cold air, the second stepper motor 240 is turned on to drive the second rotating rod 250 to rotate, which in turn drives the semi-circular baffle 260 to rotate and block part of the circular air inlet 220, thereby reducing the air intake.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An oil heat exchanger, characterized in that, include: The heat exchange assembly (100) includes an oil inlet chamber (110), an oil inlet (110a) connected to the oil inlet chamber (110), an oil outlet chamber (120) disposed next to the oil inlet chamber (110), an oil outlet (120a) connected to the oil outlet chamber (120), a fixing plate (130) symmetrically fixed to the outer walls of the oil inlet chamber (110) and the oil outlet chamber (120), a double-ended through-hole oil pipe (140) with one end connected to the oil inlet chamber (110) and the other end connected to the oil outlet chamber (120), a sealing plate (150) symmetrically fixed between two adjacent double-ended through-hole oil pipes (140), and a ventilation cavity (160) composed of the sealing plate (150) and the outer wall of the double-ended through-hole oil pipe (140). The air intake assembly (200) includes an air intake hood (210) fixed on the fixed plate (130), a circular air inlet (220) fixed on the air intake hood (210), and a dust filter (230) installed on the outer wall of the circular air inlet (220); A cleaning component (300) is provided on the circular air inlet (220) and can clean the dust filter (230).

2. The lubricating oil heat exchanger according to claim 1, characterized in that, The cleaning assembly (300) includes a rotating ring (310) rotatably mounted on the outer wall of the circular air inlet (220), teeth (320) uniformly fixed on the outer wall of the rotating ring (310), a pad (330) fixed on the outer wall of the circular air inlet (220), a first stepper motor (340) fixed on the pad (330), a first rotating rod (350) coaxially connected to the output end of the first stepper motor (340), a toothed ring (360) fixed on the first rotating rod (350) and meshing with the teeth (320), and a cleaning brush (370) connected to the outer wall of the rotating ring (310) and attached to the surface of the dust filter (230).

3. The lubricating oil heat exchanger according to claim 1, characterized in that, The air intake assembly (200) further includes a second stepper motor (240) fixed on the outer wall of the circular air intake (220), a second rotating rod (250) rotatably mounted on the circular air intake (220) and coaxially connected to the output end of the second stepper motor (240), and a semi-circular baffle (260) fixed on the second rotating rod (250).

4. The lubricating oil heat exchanger according to claim 1, characterized in that, A connecting plate (230a) is symmetrically fixed on the side wall of the dust filter (230), and the connecting plate (230a) is fixed on the circular air inlet (220) by a first bolt (230b).

5. The lubricating oil heat exchanger according to claim 1, characterized in that, The double-ended through-hole oil pipe (140) has oblique guide plates (140a) that are evenly and alternately fixed on the upper and lower inner walls.

6. The lubricating oil heat exchanger according to claim 1, characterized in that, Heat dissipation fins (160a) are uniformly fixed on the outer wall of the double-ended through-hole oil pipe (140), and the heat dissipation fins (160a) are located in the inner cavity of the ventilation cavity (160).

7. The lubricating oil heat exchanger according to claim 2, characterized in that, The cleaning brush (370) is fixed to the outer wall of the rotating ring (310) by a second bolt.

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