A thermostat structure based on an outboard motor

Abstract

The utility model discloses a kind of thermostat structure based on outboard motor, the utility model relates to thermostat technical field, its structure includes outboard motor body, the bottom of outboard motor body is fixedly installed with propeller, the inside bottom side of outboard motor body is fixedly installed with water pump, the top side of water pump is provided with oil sump, the top side of oil sump is provided with exhaust manifold seat, oil sump and exhaust manifold seat are located inside outboard motor body, the inside both sides of outboard motor body are fixedly installed with thermostat component, thermostat component includes thermostat room, thermostat room is fixedly installed with thermostat body in its inside.The thermostat structure based on outboard motor, by hole discharge water pipe and the original air in water jacket inside, and then will not due to excessive pressure lead to sealing washer failure, ensure the sealing property of thermostat, and prevent the case of thermostat water leakage, ensure the safe operation of thermostat.

Description

Technical Field

[0001] This utility model relates to the field of thermostat technology, specifically a thermostat structure based on an outboard motor. Background Technology

[0002] Outboard motors, as the name suggests, are propulsion engines mounted on the outside of the hull of a boat, typically suspended on the outside of the stern plate. Outboard motors are highly integrated and easy to install and purchase, making them the preferred power source for personal recreational boats. They are also widely used in fishing, commercial operations, and government law enforcement, covering scenarios such as emergency rescue and maritime patrol. Depending on the energy source, outboard motors are divided into fuel-powered (including gasoline, diesel, and LPG) and electric outboard motors, with four-stroke gasoline engines being the mainstream choice for recreational yachts due to their compliance with emission standards.

[0003] The thermostat automatically adjusts the coolant flow path based on coolant temperature. At low temperatures, it allows the coolant to circulate in a small loop within the engine, quickly warming it to its optimal operating temperature and reducing low-temperature wear and fuel consumption. At high temperatures, it activates a large loop, allowing the coolant to dissipate heat through the radiator, preventing engine overheating. Because outboard motors operate in environments with significant temperature variations, a thermostat is essential for precisely controlling coolant circulation to maintain the engine within its optimal temperature range, ensuring stable and efficient operation and extending its lifespan. Currently, outboard motors have a relatively simple cooling system with only a large loop, a significant difference from the dual-loop cooling systems used in automobiles.

[0004] In existing thermostat structures based on outboard motors, air may be present in the cooling water inlet pipe when the outboard motor is not started cold. When the engine is started, the cooling water is drawn by the water pump and then enters the engine water jacket through the water channel. At this time, the air in the water jacket will be squeezed to the inlet of the thermostat chamber. If the pressure is too high, it will cause the gasket on the thermostat chamber to fail, resulting in water leakage. Utility Model Content

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a thermostat structure based on an outboard engine, which solves the problem that when the outboard engine is cold and not started, air will be present in the cooling water inlet pipe. When the engine is first started, the cooling water is drawn by the water pump and then enters the engine water jacket through the water channel. At this time, the air in the water jacket will be squeezed to the inlet of the thermostat chamber. If the pressure is too high, it will cause the sealing gasket on the thermostat chamber to fail, resulting in water leakage.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a thermostat structure based on an outboard motor, comprising an outboard motor body, a propeller fixedly mounted at the bottom of the outboard motor body, a water pump fixedly mounted on the bottom side of the inside of the outboard motor body, an oil pan on the top side of the water pump, an exhaust manifold seat on the top side of the oil pan, both the oil pan and the exhaust manifold seat being located inside the outboard motor body, thermostat assemblies fixedly mounted on both sides of the inside of the outboard motor body, the thermostat assembly comprising a thermostat chamber, a thermostat body fixedly mounted inside the thermostat chamber, a valve plate fixedly mounted on the surface of the thermostat body, and an opening provided on the surface of the valve plate.

[0007] Preferably, one end of the thermostat chamber has a thermostat inlet and the other end has a thermostat outlet. In this invention, water can enter through the thermostat inlet and exit through the thermostat outlet, thus enabling the flow of water through the thermostat.

[0008] Preferably, the valve plate and the opening are both located on the side close to the thermostat outlet.

[0009] Preferably, the size of the opening is set according to the simulation conditions. In this invention, the size of the opening is calculated according to the simulation conditions. If the size of the opening is too large, the water flow will be too large, which will take away a lot of heat. When the engine is first started, the engine temperature will be too low and it will not be able to operate normally. Therefore, an opening of a suitable size is opened as needed to ensure the normal operation of the thermostat.

[0010] Preferably, a water pipe is connected between the output end of the water pump and the inlet of the thermostat, and a water jacket is fixedly installed on the surface of the water pipe, which is fixedly installed inside the outboard motor body.

[0011] Preferably, a water inlet is provided on one side of the bottom of the outboard motor body, and the output end of the water inlet is connected to the input end of the water pump.

[0012] (III) Beneficial Effects This invention provides a thermostat structure based on an outboard engine. It has the following advantages: (i) The thermostat structure based on the outboard motor, by opening a hole of appropriate size on the surface of the valve plate, can discharge the air originally in the water pipe and water jacket, preventing the air in the water pipe and water jacket from being squeezed by water, which would cause the gasket on the thermostat to fail due to excessive pressure and lead to water leakage. By discharging the original air in the water pipe and water jacket through the opening, the gasket will not fail due to excessive pressure, thus ensuring the sealing performance of the thermostat and preventing water leakage, thereby ensuring the safe operation of the thermostat.

[0013] (ii) The thermostat structure based on the outboard motor, by setting thermostat components on both the port and starboard sides, enables the outboard motor body to automatically adjust the temperature according to the heat generated during operation, thereby ensuring the normal operation of the outboard motor body, extending the service life of the outboard motor body, and enabling more precise temperature adjustment on the left and right sides inside the outboard motor body, thus improving the adjustment effect.

[0014] (III) The thermostat structure based on the outboard motor, through the setting of the thermostat chamber and the thermostat inlet, allows water to enter the thermostat chamber from the thermostat inlet without directly impacting the surface of the thermostat body inside, thereby reducing the damage of water flow to the thermostat body and extending the service life of the thermostat body. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the thermostat assembly of this utility model; Figure 3 This is a schematic diagram of the specific structure of the valve plate of this utility model.

[0016] In the diagram: 1. Outboard motor body; 2. Propeller; 3. Water pump; 4. Oil pan; 5. Exhaust manifold seat; 6. Thermostat assembly; 61. Thermostat chamber; 62. Thermostat body; 63. Valve plate; 64. Opening; 65. Thermostat inlet; 66. Thermostat outlet; 7. Water pipe; 8. Water jacket; 9. Water inlet. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] See Figure 1-3This utility model provides a technical solution: a thermostat structure based on an outboard motor, the structure including an outboard motor body 1, a propeller 2 fixedly installed at the bottom of the outboard motor body 1, a water pump 3 fixedly installed on the bottom side inside the outboard motor body 1, an oil pan 4 provided on the top side of the water pump 3, an exhaust manifold seat 5 provided on the top side of the oil pan 4, both the oil pan 4 and the exhaust manifold seat 5 are located inside the outboard motor body 1, thermostat assemblies 6 are fixedly installed on both sides inside the outboard motor body 1, the thermostat assembly 6 includes a thermostat chamber 61, a thermostat body 62 fixedly installed inside the thermostat chamber 61, a valve plate 63 fixedly installed on the surface of the thermostat body 62, and an opening 64 is provided on the surface of the valve plate 63.

[0019] The thermostat chamber 61 has a thermostat inlet 65 at one end and a thermostat outlet 66 at the other end. Specifically, water can enter through the thermostat inlet 65 and be discharged through the thermostat outlet 66, thus enabling the flow of water through the thermostat.

[0020] The valve plate 63 and the opening 64 are both located on the side near the thermostat outlet 66.

[0021] The size of the opening 64 is set according to the simulation conditions. Specifically, the size of the opening 64 needs to be calculated based on the simulation conditions. If the size of the opening 64 is too large, it will cause the water flow to be too large, which will take away a lot of heat. When the engine is first started, the engine temperature will be too low and it will not be able to operate normally. Therefore, the opening 64 of an appropriate size is opened as needed to ensure the normal operation of the thermostat.

[0022] A water pipe 7 is connected between the output end of the water pump 3 and the inlet 65 of the thermostat. A water jacket 8 is fixedly installed on the surface of the water pipe 7 and is fixedly installed inside the outboard motor body 1.

[0023] The outboard motor body 1 has a water inlet 9 at the bottom of one side, and the output end of the water inlet 9 is connected to the input end of the water pump 3.

[0024] Working principle: When the engine is first started, coolant is drawn from the bottom by water pump 3. The operation of water pump 3 causes water to enter water pipe 7 through water inlet 9, and then enter the engine water jacket 8 through water pipe 7. At this time, the air in water pipe 7 and water jacket 8 will be squeezed to the thermostat inlet 65 by the water. Traditional valve plate 63 does not have an opening 64. If the pressure is too high, it will cause the gasket on the thermostat chamber 61 to fail, resulting in water leakage. Therefore, an opening 64 is made on the thermostat valve. After the air in water pipe 7 and water jacket 8 is squeezed to the thermostat inlet 65, it is discharged through the opening 64. This prevents the gasket from failing due to excessive pressure, ensuring the sealing performance and preventing water leakage.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thermostat structure based on an outboard motor, comprising an outboard motor body (1), characterized in that: A propeller (2) is fixedly installed at the bottom of the outboard motor body (1). A water pump (3) is fixedly installed on the bottom side inside the outboard motor body (1). An oil pan (4) is provided on the top side of the water pump (3). An exhaust manifold seat (5) is provided on the top side of the oil pan (4). The oil pan (4) and the exhaust manifold seat (5) are both located inside the outboard motor body (1). A thermostat assembly (6) is fixedly installed on both sides inside the outboard motor body (1). The thermostat assembly (6) includes a thermostat chamber (61). A thermostat body (62) is fixedly installed inside the thermostat chamber (61). A valve plate (63) is fixedly installed on the surface of the thermostat body (62). An opening (64) is provided on the surface of the valve plate (63).

2. The thermostat structure based on an outboard motor according to claim 1, characterized in that: The thermostat inlet (65) is provided at one end of the thermostat chamber (61), and the thermostat outlet (66) is provided at the other end of the thermostat chamber (61).

3. The thermostat structure based on an outboard engine according to claim 1, characterized in that: The valve plate (63) and the opening (64) are both located on the side close to the thermostat outlet (66).

4. The thermostat structure based on an outboard engine according to claim 1, characterized in that: The size of the opening (64) is set according to the simulation conditions.

5. The thermostat structure based on an outboard engine according to claim 1, characterized in that: A water pipe (7) is connected between the output end of the water pump (3) and the inlet (65) of the thermostat. A water jacket (8) is fixedly installed on the surface of the water pipe (7) and the water jacket (8) is fixedly installed inside the outboard motor body (1).

6. The thermostat structure based on an outboard engine according to claim 1, characterized in that: A water inlet (9) is provided at the bottom of one side of the outboard motor body (1), and the output end of the water inlet (9) is connected to the input end of the water pump (3).

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