Water-cooling circulation air exhaust device and engine

Abstract

The invention discloses a water-cooling circulation air exhaust device, and relates to the technical field of engine water cooling, an exhaust joint is arranged on a thermostat cover, an air outlet joint is arranged on a water cooler, two ends of an exhaust pipe are respectively connected to the exhaust joint and the air outlet joint, so that the thermostat cover and the water cooler are communicated with each other; cooling liquid flows into the water cooler, the cooling liquid flows to the thermostat cover, air can be collected in a cavity formed between the thermostat cover and the engine, the air collected in front of the thermostat can enter the exhaust pipe from the exhaust connector, and the air flows to the water cooler through the exhaust pipe and enters an inner cavity of the water cooler from the air outlet connector. A discharging channel is provided for air collected in the thermostat, the air can be discharged by continuously adding cooling liquid, the engine emptying process can be completed under the condition that an engine does not need to be started, and the risk that the engine is scalded due to the high temperature of the cooling liquid is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of engine water cooling, and further to a water-cooling circulating air exhaust device and an engine. Background Art

[0002] The water inlet of the motorcycle water-cooled engine is connected to the water cooler through the first water inlet pipe, and the water outlet of the engine is connected to the water cooler through the outlet pipe. The thermostat is used to isolate the water cooling chamber of the engine cylinder from the water cooler. In the initial stage of engine operation, the water temperature is low, the thermostat remains closed, and the antifreeze (coolant) in the engine circulates and does not enter the cooler. When the water temperature of the engine rises to a certain temperature, the thermostat opens, and the high-temperature antifreeze (coolant) in the engine cylinder is sent to the water cooler to dissipate heat in the wind, and the cooled antifreeze (coolant) flows back to the engine.

[0003] After adding antifreeze (coolant) to the water cooler, since the thermostat is closed when the engine is not working, a large amount of compressed air cannot be discharged in the water circuit after adding antifreeze (coolant). In order to discharge the air, you can only add water again after the engine is running and the temperature of the antifreeze (coolant) reaches the temperature at which the thermostat opens. This temperature is generally greater than 70°C, and there is a risk of scalding during the water adding process.

[0004] For those skilled in the art, how to exhaust air without starting the engine is a technical problem that needs to be solved at present. Summary of the invention

[0005] The core of the present invention is to provide a water-cooled circulating air exhaust device, which is provided with an exhaust pipe connected to the thermostat cover and the water cooler, so that the air collected in the thermostat cover can be discharged, and the engine exhaust process can be completed without starting the engine. The specific scheme is as follows:

[0006] A water-cooled circulating air exhaust device comprises a thermostat cover, a water cooler and an exhaust pipe, wherein the thermostat cover is provided with an exhaust joint, the water cooler is provided with an air outlet joint, the two ends of the exhaust pipe are respectively connected to the exhaust joint and the air outlet joint, and the air collected before the thermostat enters the exhaust pipe from the exhaust joint and enters the inner cavity of the water cooler from the air outlet joint.

[0007] Optionally, the exhaust joint is arranged at the highest point of the thermostat cover.

[0008] Optionally, the air outlet connector is located above the water inlet connector.

[0009] Optionally, after the coolant is filled, the air outlet connector is located below the liquid level of the water cooler.

[0010] Optionally, the exhaust pipe is a hose.

[0011] Optionally, the thermostat cover is provided with a water inlet joint for connecting to a first water inlet pipe, and the water cooler is provided with a water inlet joint for connecting to the first water inlet pipe; the coolant in the water cooler flows from the water inlet joint through the first water inlet pipe to the water inlet joint;

[0012] The inner diameter of the first water inlet pipe is more than 3 times larger than the inner diameter of the exhaust pipe.

[0013] Optionally, the exhaust pipe and the exhaust joint, and the exhaust pipe and the air outlet joint are fixed by clamps respectively;

[0014] The first water inlet pipe and the water inlet joint, and the first water inlet pipe and the water inlet joint are respectively fixed by clamps.

[0015] Optionally, the exhaust pipe and the first water inlet pipe are wrapped around the outside of the engine from the same side.

[0016] Optionally, the area of ​​the exhaust pipe close to the thermostat cover is close to the engine cylinder block, and the area close to the water cooler is fixedly mounted on the first water inlet pipe by a positioning clip.

[0017] The present invention also provides an engine, comprising any one of the water-cooling circulating air exhaust devices described above.

[0018] The present invention provides a water-cooled circulating air exhaust device, wherein an exhaust joint is arranged on a thermostat cover, an air outlet joint is arranged on a water cooler, two ends of an exhaust pipe are respectively connected to the exhaust joint and the air outlet joint, so that the thermostat cover and the water cooler are interconnected; coolant flows into the water cooler, and the coolant flows to the thermostat cover, and air is gathered in a cavity formed between the thermostat cover and the engine, and the air gathered before the thermostat can enter the exhaust pipe from the exhaust joint, and the air flows to the water cooler through the exhaust pipe, and enters the inner cavity of the water cooler from the air outlet joint; the present invention provides an exhaust channel for the air gathered in the thermostat, and the air can be exhausted by continuously adding coolant, and the engine exhaust process can be completed without starting the engine, thereby avoiding the risk of scalding by high-temperature coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1This is the right rear view of the engine using the water-cooled circulating air exhaust device;

[0021] Figure 2 for Figure 1 A partial enlarged view of the dotted circle portion;

[0022] Figure 3 This is a water level view of the left side of the engine using a water-cooled circulating air exhaust device;

[0023] Figure 4 It is a partial schematic diagram of the installation position of the thermostat cover;

[0024] Figure 5 It is the rear side view of the water cooler;

[0025] Figure 6 for Figure 5 Cross-sectional view of section AA.

[0026] The figure includes:

[0027] Thermostat cover 1, exhaust joint 11, water inlet joint 12, water cooler 2, air outlet joint 21, water inlet joint 22, exhaust pipe 3, first water inlet pipe 4, positioning buckle 5, clamp 6, second water inlet pipe 7. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the water-cooled circulating air exhaust device and the engine of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] Figure 1 , Figure 3 In the diagram, the X-axis represents the left-right direction of the engine, the Y-axis represents the front-back direction of the engine, and the Z-axis represents the up-down direction of the engine.

[0030] The present invention provides a water-cooled circulating air exhaust device, combined with Figure 1 , Figure 2As shown, the water-cooled circulating air exhaust device includes a thermostat cover 1, a water cooler 2, and an exhaust pipe 3. The thermostat cover 1 is fixedly assembled on the engine cylinder, and the thermostat cover 1 covers the outside of the thermostat installed on the engine cylinder. The thermostat is located in the cavity formed by the thermostat cover 1 and the engine cylinder; when the coolant enters the cavity of the thermostat cover 1, the opening and closing of the thermostat controls whether the coolant enters the cooling channel of the engine cylinder. The thermostat automatically adjusts the opening and closing according to the temperature of the coolant, changes the circulation range of the water, adjusts the heat dissipation capacity of the cooling system, and ensures that the engine works within a suitable temperature range. At the initial stage of engine startup, the thermostat remains closed, so that the coolant in the engine cylinder flows in a self-circulating manner, so that the engine heats up quickly; when the coolant in the engine cylinder reaches a higher temperature, the thermostat automatically opens, so that the coolant in the engine and the water cooler 2 form a circulating flow to dissipate heat. If the main valve of the thermostat opens too late, it will cause the engine to overheat; if the main valve of the thermostat opens too early, the engine preheating time will be prolonged and the engine temperature will be too low.

[0031] The thermostat cover 1 is provided with an exhaust joint 11, the water cooler 2 is provided with an air outlet joint 21, and both ends of the exhaust pipe 3 are respectively connected to the exhaust joint 11 and the air outlet joint 21, so that the thermostat cover 1 and the water cooler 2 are connected through the exhaust pipe 3. The air collected before the thermostat enters the exhaust pipe 3 from the exhaust joint 11 and enters the inner cavity of the water cooler 2 from the air outlet joint 21, thereby exhausting the air in the cavity of the thermostat cover 1.

[0032] Combination Figure 1 , Figure 2 , Figure 3As shown by the arrows, the solid arrow indicates the flow direction of the coolant when adding coolant, and the air arrow indicates the flow direction of the air. The water cooler 2 is connected to the engine cylinder body through the first water inlet pipe 4 and the second water inlet pipe 7 respectively. The first water inlet pipe 4 is located at a higher position, and the second water inlet pipe 7 is located at a lower position; the inlet of the second water inlet pipe 7 is located at the lowest point of the water cooler 2, and the inlet of the first water inlet pipe 4 is located at a higher point of the water cooler 2. When adding coolant, the coolant is injected into the water cooler 2, and the coolant flows directly from the second water inlet pipe 7 to the engine cylinder body. This coolant is not affected by the thermostat and directly enters the cooling flow channel of the engine cylinder body. This path will not produce air accumulation; when the coolant in the water cooler 2 reaches a certain height, the coolant begins to enter the first water inlet pipe 4 and reaches the thermostat cover 1. Since this path is blocked by the thermostat (the engine is not started and is at a low temperature), air will be collected in the thermostat cover 1. The traditional air exhaust method requires starting the engine to open the thermostat to discharge the collected air through the circulation of the coolant. The present invention provides an exhaust joint 11 on the thermostat cover 1. Under the squeeze of the coolant, the collected air will be discharged into the exhaust pipe 3 through the exhaust joint 11, pass through the exhaust pipe 3 and enter the inner cavity of the water cooler 2 from the air outlet joint 21, and finally be discharged to the outside; with the continuous addition of coolant, after all the air in the thermostat cover 1 is discharged, the coolant will enter the exhaust pipe 3 along the path of air flow, and the liquid level in the exhaust pipe 3 will be flush with the liquid level in the water cooler 2.

[0033] Combination Figure 3 As shown, four liquid levels of coolant outflow are shown (A, B, C, D from low to high), where A is the lowest point of the coolant, B is the height of the thermostat cover 1, C is the height of the water inlet joint 22, and D is the highest liquid level.

[0034] After the coolant (antifreeze) is added from the water inlet of the water cooler 2, the height of the water level gradually rises from the water level A to the water level B. In this process, the coolant in the water cooler 2 only flows through the second water inlet pipe 7, and has not yet flowed into the first water inlet pipe 4; and because the thermostat switch is in the closed state when the engine is in the cold state, the coolant flowing in from the second water inlet pipe 7 only enters the cooling flow channel of the engine cylinder block, and the coolant will not enter the thermostat cover 1; there is no coolant in the area from the thermostat cover 1 to the air outlet joint 21 and the water inlet joint 22 (exhaust pipe 3, first water inlet pipe 4).

[0035] Until the water level reaches the C level, the coolant flows from the water inlet joint 22 into the first water inlet pipe 4 and into the thermostat cover 1, and the air in the thermostat cover 1 is discharged to the outside through the exhaust joint 11, the exhaust pipe 3, and the air outlet joint 21. Finally, the liquid level reaches the water level D, and the first water inlet pipe 4 and the exhaust pipe 3 are completely filled with coolant, thereby ensuring that the entire water circuit is completely filled with coolant.

[0036] From the introduction of the above exhaust control, it can be seen that the water-cooled circulating air exhaust device of the present invention does not need to start the engine during the air exhaust process, and does not need to let the collected air participate in the coolant circulation, thereby achieving the purpose of cooling the machine and exhausting air under low temperature conditions, and avoiding the risk of burns caused by high temperature of the coolant.

[0037] Based on the above scheme, combined with Figure 4 As shown, the exhaust connector 11 of the present invention is arranged at the highest point of the thermostat cover 1. Since the density of air is less than the density of coolant, the gas gathered in the cavity of the thermostat cover 1 is gathered at the top of the cavity. By arranging the exhaust connector 11 at the highest point of the thermostat cover 1, as much air as possible can be discharged.

[0038] Specifically, combined Figure 5 , Figure 6 As shown, the air outlet joint 21 is located above the water inlet joint 22, and the height of the air outlet joint 21 is higher than the height of the water inlet joint 22, so as to avoid the liquid surface interfering with the exhaust process during exhaust. When the coolant is filled, the air outlet joint 21 is located below the liquid level of the water cooler 2. Since the air outlet joint 21 is located above the water inlet joint 22, during the process of filling and cooling, when the air is discharged outward through the air outlet joint 21, the air is directly discharged into the atmosphere, and is not discharged into the coolant to form additional resistance; if the height of the air outlet joint 21 is lower than the liquid level of the water cooler 2, the discharged air will enter the coolant of the water cooler 2 to form bubbles, which will create resistance to the discharged air and is not conducive to effective emptying. When all the coolant is filled, the air outlet joint 21 is located below the liquid level and is completely immersed in the coolant.

[0039] The exhaust pipe 3 used in the present invention is a hose, such as a rubber hose or other materials. The hose is convenient for bending and wiring, and can be laid out in a narrow space of the engine.

[0040] Combination Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, a water inlet joint 12 for connecting to a first water inlet pipe 4 is provided on the thermostat cover 1, and a water inlet joint 22 for connecting to the first water inlet pipe 4 is provided on the water cooler 2. Both ends of the first water inlet pipe 4 are respectively connected to the water inlet joint 12 and the water inlet joint 22. The coolant in the water cooler 2 flows from the water inlet joint 22 through the first water inlet pipe 4 to the water inlet joint 12; the inner diameter of the first water inlet pipe 4 is more than 3 times larger than the inner diameter of the exhaust pipe 3, and the exhaust pipe 3 only needs a very small inner diameter to complete the air discharge. When the engine is working normally, the coolant circulates mainly through the first water inlet pipe 4, the second water inlet pipe 7 and other pipelines. The larger inner diameter can achieve a higher heat exchange rate.

[0041] Combination Figure 1 , Figure 2As shown, the exhaust pipe 3 and the exhaust joint 11, the exhaust pipe 3 and the air outlet joint 21 are fixed by the clamp 6 respectively; the first water inlet pipe 4 and the water inlet joint 12, the first water inlet pipe 4 and the water inlet joint 22 are fixed by the clamp 6 respectively. The clamp 6 is made of metal material, and the clamp 6 surrounds and presses on the outside of the exhaust pipe 3 and the first water inlet pipe 4, and continuously presses to achieve a sealed connection. Both ends of the second water inlet pipe 7 can also be fixed by the clamp 6.

[0042] In order to facilitate wiring, the exhaust pipe 3 and the first water inlet pipe 4 are wound outside the engine from the same side. Figure 1 , Figure 2 As shown, the first water inlet pipe 4 passes through the right side from the rear side of the engine and winds around the right rear side of the engine, and is connected to the right side of the water cooler 2; similarly, the exhaust pipe 3 passes through the right side from the rear side of the engine and winds around the right rear side of the engine, and the winding directions of the exhaust pipe 3 and the first water inlet pipe 4 are roughly the same. In addition, the exhaust pipe 3 can also pass through the left side of the engine and be connected to the left side of the water cooler 2, and these winding forms should be included in the protection scope of the present invention.

[0043] Combination Figure 1 , Figure 2 As shown, the area of ​​the exhaust pipe 3 close to the thermostat cover 1 is close to the engine cylinder body, and a section of the exhaust pipe 3 close to the thermostat cover 1 is closer to the engine cylinder body, and there is a certain distance between the exhaust pipe 3 and the first water inlet pipe 4. The area of ​​the exhaust pipe 3 close to the water cooler 2 is fixedly mounted on the first water inlet pipe 4 by a positioning buckle 5, and the section of the exhaust pipe 3 close to the water cooler 2 is aligned with the first water inlet pipe 4; overall, the exhaust pipe 3 and the first water inlet pipe 4 have similar extension alignment directions.

[0044] The present invention also provides an engine, including the above-mentioned water-cooled circulating air exhaust device, and the engine can achieve the same technical effect; please refer to the prior art for the structure of other parts of the engine, and the present invention will not be repeated here.

[0045] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A water-cooled circulating air exhaust device, characterized in that: The invention comprises a thermostat cover (1), a water cooler (2), and an exhaust pipe (3); the thermostat cover (1) is provided with an exhaust joint (11), the water cooler (2) is provided with an outlet joint (21), two ends of the exhaust pipe (3) are respectively connected to the exhaust joint (11) and the outlet joint (21); the air collected before the thermostat enters the exhaust pipe (3) from the exhaust joint (11), and enters the inner cavity of the water cooler (2) from the outlet joint (21).

2. The water-cooling circulating air exhaust device according to claim 1, characterized in that: The exhaust joint (11) is arranged at the highest point of the thermostat cover (1).

3. The water-cooling circulating air exhaust device according to claim 1, characterized in that: The air outlet joint (21) is located above the water inlet joint (22).

4. The water-cooling circulating air exhaust device according to claim 3, characterized in that: After the coolant is filled, the air outlet connector (21) is located below the liquid level of the water cooler (2).

5. The water-cooling circulating air exhaust device according to claim 1, characterized in that: The exhaust pipe (3) is a hose.

6. The water-cooling circulating air exhaust device according to claim 1, characterized in that: The thermostat cover (1) is provided with a water inlet joint (12) for connecting to a first water inlet pipe (4), and the water cooler (2) is provided with a water inlet joint (22) for connecting to the first water inlet pipe (4); the coolant in the water cooler (2) flows from the water inlet joint (22) through the first water inlet pipe (4) to the water inlet joint (12); The inner diameter of the first water inlet pipe (4) is more than 3 times greater than the inner diameter of the exhaust pipe (3).

7. The water-cooling circulating air exhaust device according to claim 6, characterized in that: The exhaust pipe (3) and the exhaust joint (11), and the exhaust pipe (3) and the air outlet joint (21) are respectively fixed by means of clamps (6); The first water inlet pipe (4) and the water inlet joint (12), and the first water inlet pipe (4) and the water inlet joint (22) are respectively fixed by means of clamps (6).

8. The water-cooling circulating air exhaust device according to claim 7, characterized in that: The exhaust pipe (3) and the first water inlet pipe (4) are wound around the outside of the engine from the same side.

9. The water-cooling circulating air exhaust device according to claim 8, characterized in that: The area of ​​the exhaust pipe (3) close to the thermostat cover (1) is close to the engine cylinder body, and the area close to the water cooler (2) is fixedly mounted on the first water inlet pipe (4) via a positioning buckle (5).

10. An engine, characterized in that: It comprises the water-cooling circulating air exhaust device as described in any one of claims 1 to 9.

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