Special outboard engine capable of hiding underwater navigation

Abstract

The invention discloses a special outboard engine capable of sailing underwater in a hidden mode, relates to the technical field of outboard engines, and aims to solve the problem that a traditional outboard engine cannot sail underwater at any time. The driving device and the transmission propulsion device are mounted at two ends of the shell, a crankshaft of the driving device is arranged along the length direction of the shell, the chemical heating cavity is communicated with the thermosensitive cylinder, the magneto wind wheel is mounted at the top of the crankshaft, and the crankshaft is in transmission connection with the transmission propulsion device; a thermosensitive piston is arranged in the thermosensitive cylinder and is in transmission connection with the crankshaft through a thermosensitive connecting rod; a cold-sensitive piston is arranged in the cold-sensitive air cylinder and is in transmission connection with the crankshaft through a cold-sensitive connecting rod, and when the thermosensitive piston moves to the leftmost side, a gas medium cavity of the thermosensitive air cylinder is communicated with the cold-sensitive air cylinder; the transmission propelling device comprises a driving wheel set and a propeller, the driving wheel set is in transmission connection with the crankshaft, and the driving wheel set is in transmission connection with the propeller. The outboard engine can sail underwater at any time.

Description

Technical Field

[0001] The invention relates to the technical field of outboard motors, and in particular to a special outboard motor capable of concealed underwater navigation. Background Art

[0002] At present, the existing outboard motors at home and abroad are all driven by fuel power and battery power. Fuel power is an internal combustion engine that uses oil or gas as fuel. The main fuels include gasoline, diesel, kerosene, alcohol, natural gas, hydrogen, liquefied petroleum gas, etc. Among them, gasoline engines and diesel engines are the most common driving sources for fuel-powered outboard motors. Battery power is an electric motor driven by batteries as energy. Batteries mainly include chemical batteries, physical batteries, biological batteries, etc. Among them, chemical batteries such as lithium-ion batteries are the most common driving source for battery-powered outboard motors.

[0003] Outboard motors powered by fuel or battery power can only be used for surface navigation. When the outboard motor is immersed in water along with the boat, it cannot be started and operated normally underwater. In addition, when it is necessary to hide underwater, the fuel power or battery power must be waterproofed. After emerging from water, the waterproof protection must be turned on to start and operate the outboard motor. During the process of hiding under water, if the fuel power or battery power leaks (seeps) water due to failure of the waterproof protection, the outboard motor power will become paralyzed after emerging from water and can no longer be started and operated.

[0004] Due to the particularity of tasks such as modern warfare, underwater rescue, underwater survey and exploration, it is necessary for outboard motors to be able to hide underwater at any time and navigate normally underwater; outboard motors driven by fuel power or battery power cannot meet the needs of hiding underwater at any time and sailing normally underwater due to their inherent technical characteristics.

[0005] Therefore, how to provide an outboard motor suitable for underwater navigation is a technical problem to be solved. Summary of the invention

[0006] In view of the above technical problems, the present invention provides a special outboard motor that can sail underwater in a concealed manner.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] Provided is a special outboard motor capable of concealed underwater navigation, characterized in that it comprises a housing, a driving device and a transmission propulsion device;

[0009] The driving device and the transmission propulsion device are respectively installed at the top and bottom of the shell, and the driving device includes a heat-sensitive cylinder, a chemical heating chamber, a cold-sensitive cylinder, a crankshaft, a magnetic motor flywheel and a water circulation refrigeration unit for refrigerating the cold-sensitive cylinder; the crankshaft is arranged along the length direction of the shell, the heat-sensitive cylinder and the cold-sensitive cylinder are located on the same side of the crankshaft, the chemical heating chamber is communicated with the heat-sensitive cylinder, the magnetic motor wind wheel is installed on the top of the crankshaft, and the crankshaft is in transmission connection with the transmission propulsion device;

[0010] A thermosensitive piston is arranged in the thermosensitive cylinder, and the thermosensitive piston is drivingly connected to the crankshaft via a thermosensitive connecting rod;

[0011] A cold-sensitive piston is arranged in the cold-sensitive cylinder, and the cold-sensitive piston is drivingly connected to the crankshaft through a cold-sensitive connecting rod. When the heat-sensitive piston moves to the leftmost side, the gas medium cavity of the heat-sensitive cylinder is connected to the cold-sensitive cylinder.

[0012] The transmission propulsion device includes a driving wheel set and a propeller. The driving wheel set is drivingly connected to the crankshaft, and the driving wheel set is drivingly connected to the propeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other and further objects and advantages will become apparent from the following description. The accompanying drawings are intended to illustrate examples of the invention in its various forms. The accompanying drawings should not be construed as limiting the invention to all the ways in which it can be made and adopted. Of course, changes and substitutions can be made to the various components of the invention. The invention also lies in sub-combinations and sub-systems of the elements described, and in methods of using them.

[0014] In the attached picture:

[0015] Figure 1 It is a schematic diagram of a special outboard motor capable of concealed underwater navigation according to an embodiment of the present invention;

[0016] Figure 2 This is a working principle diagram of a thermal cylinder in an embodiment of the present invention;

[0017] Figure 3 Schematic diagram of the working principle of the cold-sensitive cylinder in an embodiment of the present invention.

[0018] Reference numerals:

[0019] 1—power head, 11—thermosensitive cylinder, 111—gas medium chamber of heat-sensitive cylinder, 112—heat source chamber, 113—activator chamber, 114—thermosensitive piston, 115—thermosensitive connecting rod, 12—cold-sensitive cylinder, 121—cold-sensitive piston, 122—cold-sensitive connecting rod, 13—crankshaft, 14—magneto flywheel, 2—control system, 3—suspension system, 4—transmission propulsion system, 41—transmission shaft, 42—cooling water pipe, 43—centrifugal water pump, 44—driving bevel gear, 45—forward gear bevel gear, 46—reverse gear bevel gear, 47—tooth clutch, 48—propeller. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0023] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figures 1 to 3 As shown, the special outboard motor capable of concealed underwater navigation provided by the present invention comprises a housing, a driving device and a transmission propulsion device;

[0026] The driving device and the transmission propulsion device are respectively installed at the top and bottom of the shell, and the driving device includes a heat-sensitive cylinder 11, a chemical heating chamber, a cold-sensitive cylinder 12, a crankshaft 13, a magneto flywheel 14 and a water circulation refrigeration unit for cooling the cold-sensitive cylinder 12; the crankshaft 13 is arranged along the length direction of the shell, the heat-sensitive cylinder 11 and the cold-sensitive cylinder 12 are located on the same side of the crankshaft 13, the chemical heating chamber is connected to the heat-sensitive cylinder 11, the magneto wind wheel is installed on the top of the crankshaft 13, and the crankshaft 13 is connected to the transmission propulsion device;

[0027] A thermosensitive piston 114 is provided in the thermosensitive cylinder 11, and the thermosensitive piston 114 is drivingly connected to the crankshaft 13 via a thermosensitive connecting rod 115;

[0028] A cold-sensitive piston 121 is provided in the cold-sensitive cylinder 12, and the cold-sensitive piston 121 is connected to the crankshaft 13 through a cold-sensitive connecting rod 122. When the hot-sensitive piston 114 moves to the leftmost position, the gas medium cavity of the hot-sensitive cylinder 11 is connected to the cold-sensitive cylinder 12.

[0029] The transmission propulsion device includes a driving wheel set and a propeller 48 . The driving wheel set is drivingly connected to the crankshaft 13 , and the driving wheel set is drivingly connected to the propeller 48 .

[0030] When implementing:

[0031] The special outboard motor does not need fuel power or battery power as a driving source and can run underwater to propel the boat. The device includes a power head 1, a transmission propulsion system 4, a control mechanism 2, a suspension device 3, etc. The working principle is: the outboard motor power head 1 is generally a water-cooled internal combustion engine, and the centrifugal water pump 43 arranged on the transmission shaft 41 provides sufficient cooling water for the engine; the crankshaft 13 is vertical, which is convenient for transmitting the power of the power head 1 to the propeller 48 through bevel gears 44, 45, and 46; the thermal cylinder 11 and the cold cylinder 12 are horizontal cylinders, and the thermal piston 114 and the cold piston 121 move horizontally; the magneto flywheel 14 is arranged at the upper end of the crankshaft 13; the shift mechanism controls the tooth clutch 47, and the propeller 48 is realized through the linear motion of the tooth clutch 47 to achieve forward and reverse rotation of the propeller 48, so as to achieve the forward, stop and reverse movement of the boat.

[0032] Among them, the power head 1 outputs power (torque) as the driving source of the outboard motor, and the output power (torque) is then transmitted to the transmission propulsion system 4 through the transmission mechanism to realize the working process of the outboard motor. Specifically, the outboard motor power head 1 is installed on the upper part of the central seat, and the reduction box is installed on the lower part of the central seat. The output power (torque) of the power head 1 drives the transmission shaft 41 in the transmission propulsion system 4 through the crankshaft 13, and drives the orthogonal meshing bevel gears 44, 45, and 46 through the transmission shaft 41, and then through the linear motion of the tooth clutch 47 set on the propeller 48 shaft, the forward gear bevel gear 45 or the reverse gear bevel gear 46 is selected to transmit the power to the propeller 48, and the propeller 48 is realized. The forward and reverse rotation of the propeller 48. The power head 1 is a uniquely developed engine that does not require fuel combustion to drive. The main feature is that the engine does not need to rely on the air medium to burn fuel to obtain energy, and there is no combustion exhaust gas discharge. That is, the operation of the engine does not require gas exchange with the outside world, and the engine can be operated in a space isolated from the air underwater, so that the outboard motor can sail underwater.

[0033] As a preferred embodiment: the engine that does not require fuel combustion is set at the outboard motor power head 1, and is tightly connected to the transmission propulsion system 4. The seal of the connection is designed according to the requirements of the use to meet the anti-leakage under deep water pressure. Similarly, the engine compartment, transmission propulsion system 4, control mechanism, suspension device, etc. are also optimally designed to meet the requirements of the use to meet the anti-leakage under deep water pressure. The outboard motor can meet the anti-leakage requirements under deep water pressure in the use, and the outboard motor can meet the requirements of deep water underwater storage and operation, that is, the outboard motor can achieve submersible concealed storage and submersible operation to propel the boat to sail underwater.

[0034] As a preferred embodiment: the engine that does not require fuel combustion to drive is in a closed working cabin, and a flameless heater, a water circulation refrigeration system, an engine, a power transmission system and a waterproof sealing system are arranged in the closed working cabin.

[0035] Among them, 1) the flameless heater is arranged at one end of the closed working cabin, and is mainly composed of a heat source chamber 112 (chemical reactant) 112, an activator chamber 113 (or an activation device) 113, a control device and a heating device. The heat source chamber 112 and the activator chamber 113 are separated. The heat source chamber 112 designed by the present invention uses a chemical raw material that can generate heat energy. The chemical raw material does not produce an open flame or require gas exchange during the process of generating heat energy, and can generate the required heat energy within the required time through the control system in a closed environment. The basic working principle of the flameless heater is to make the chemical reactant and the activator contact and then react chemically through the control system, release heat energy, and transfer the heat energy to the heating device of the engine thermal cylinder 11 connected to the flameless heater arranged in the working cabin through the control system, so as to complete the guidance of the heat energy input required by the engine.

[0036] 2) A water circulation refrigeration system is arranged at the other end of the closed working cabin opposite to the flameless heater. Its cooling circulation water medium is drawn from the water source in the working water area of ​​the outboard motor by a centrifugal water pump 43 arranged on a transmission shaft 41. After being pressurized by the water pump, it is transported to the water circulation refrigeration system through a cooling water pipe 42. The cooling source is transmitted to the cooling device of the engine cold-sensitive cylinder 12 connected to the flameless heater arranged in the working cabin through a control system, thereby completing the guidance of the cooling source input required by the engine.

[0037] 3) The engine is set in the middle position of the closed working cabin, and its thermal cylinder 11 and cold cylinder 12 are divided into two rows and set on one side of the engine. The heating device of the thermal cylinder 11 is connected to the flameless heater, and the cooling device of the cold cylinder 12 is connected to the water circulation refrigeration system. The engine crankshaft 13 is connected to the power transmission system. First, a rated volume of gas medium is sealed in the closed thermal cylinder gas medium cavity 111 of the engine. The gas medium contains hydrogen, nitrogen, helium or air. When working, the control system transmits a signal to the flameless heater to generate heat energy to heat the gas in the thermal cylinder gas medium cavity 111, causing the pressure in the thermal cylinder 11 to rise, forcing the thermal piston 114 to move downward, and completing the engine's work process. When the piston 114 in the hot cylinder 11 moves downward, the piston 121 in the cold cylinder 12 also moves downward, which pushes the hot gas into the cold cylinder 12. Then the control system sends a signal to the water circulation refrigeration system to generate a cooling source to quickly cool the gas in the cold cylinder 12 to the temperature of the cooling source, thereby reducing the pressure. The piston 121 in the cold cylinder 12 continues to move downward to start compressing the gas, and the heat generated during the compression process will be dissipated through the cooling source. The piston 121 in the cold cylinder 12 moves upward, and the piston 114 in the hot cylinder 11 also moves upward at the same time, so that the gas can be forced to enter the hot cylinder 11, and then the gas will quickly heat up, thereby raising the pressure to a point where it can be repeatedly circulated, and then the engine starts a new cycle. The piston 114 in the thermal cylinder 11 and the piston 121 in the cold cylinder 12 perform linear reciprocating motion through a cycle of heat absorption, expansion, cooling and compression, and then transfer kinetic energy to the crank of the crankshaft 13 assembly through the thermal connecting rod 115 and the cold connecting rod 122, pushing the crank to rotate around the center line of the crankshaft 13 to achieve power output of the crankshaft 13.

[0038] 4) The power transmission system is arranged in a closed working cabin, connecting the engine output and the intermediate transmission mechanism of the outboard motor, and transmitting the power energy output by the engine in the form of rotational torque to the transmission shaft 41 of the intermediate transmission mechanism through the power transmission system that can be rotatably sealed, thereby realizing the power output of the engine.

[0039] Description of the working principle of the thermal cylinder 11:

[0040] like Figure 2 As shown, in the embodiment of the present application, the thermosensitive cylinder 11 is a chemical reaction produced by two or more reactants (chemical substances) after contact, and then releases heat energy (heat). Each reactant is packaged in a closed container, and the outlet device is an electronic valve remotely controlled by microelectronics, which can accurately control the amount and time of the reactant output.

[0041] Containers A and B contain conventional reactants, container C contains a reaction catalyst, and container D contains a reaction inhibitor.

[0042] When the engine needs to be started, the reactants in the A and B containers enter the reaction chambers after the electronic valves are opened, come into contact with each other, and undergo chemical reactions to generate heat, which is then transferred to the thermosensitive cylinder 11 through the thermostatic valve for heating.

[0043] When the engine needs to run continuously, containers A and B continuously transport reactants to the reaction chamber, and heat energy is continuously generated.

[0044] When the engine needs to accelerate rapidly or increase the torque, the temperature of the thermosensitive cylinder 11 needs to be increased instantly. At this time, the catalyst in the C container opens the electronic valve and enters the reaction chamber to intensify the chemical reaction between reactants A and B, causing them to generate high energy instantly.

[0045] When the engine needs to decelerate or stop suddenly, the temperature of the thermosensitive cylinder 11 needs to be reduced instantly. At this time, the inhibitor in the D container enters the reaction chamber after the electronic valve is opened to inhibit the chemical reaction between reactants A and B, thereby reducing the energy generation instantly.

[0046] As a feasible implementation scheme, the reactants selected in this embodiment are calcium oxide and water. The chemical reaction generates calcium hydroxide and generates a large amount of heat. The catalyst is sodium carbonate. Sodium carbonate further reacts with the calcium hydroxide generated in the previous step to generate calcium carbonate and sodium hydroxide. The sodium hydroxide will undergo a gasification reaction due to the high temperature, generating more heat (the gasification chemical reaction is that sodium hydroxide generates sodium oxide, water and heat). The inhibitor is diatomaceous earth (SiO2·nH2O). During the heating process, diatomaceous earth can absorb part of the water, playing the role of "slow release" to control the reaction rate.

[0047] The solenoid valve between the reaction chamber and the thermosensitive cylinder can control the amount of heat generated by the reaction that enters the thermosensitive cylinder, similar to controlling the size and opening and closing of the passage of the solenoid valve to allow heat to enter the thermosensitive cylinder as needed (different working conditions require different amounts of heat). For example, when rapid acceleration is required, heat accumulates in the reaction chamber, and then the solenoid valve is quickly opened to send the heat into the thermosensitive cylinder to generate sufficient power for the outboard motor. The waste generated in the reaction chamber can be discharged from the waste discharge port through the air pressure generated by the right movement of the piston.

[0048] Description of the working principle of cold-sensitive cylinder 12:

[0049] The cooling principle of the cold-sensitive cylinder 12 is basically the same as the cooling method of the gasoline-powered outboard motor.

[0050] The outboard motor's reduction gearbox is provided with a water inlet with a filter structure at a height position close to the propeller 48 axis, and its internal water channel connecting device is at the water pump water suction port on the upper part of the reduction gearbox. The water pump's outlet device is an electronic throttle valve remotely controlled by microelectronics and is connected to the water inlet of the cooling water channel of the cold-sensitive cylinder 12. The water outlet of the cooling water channel of the cold-sensitive cylinder 12 is connected to the drain on the outboard motor reduction gearbox through a pipeline.

[0051] When the outboard motor is working, it drives the water pump impeller to rotate, and the water pump draws water in the water area through the water inlet on the outboard motor reduction box. After being pressurized by the water pump, the water flow is pumped into the cooling water channel of the cold-sensitive cylinder 12. The cooling water flow takes away heat in the water channel of the cold-sensitive cylinder 12 and is discharged into the water area through the drain port.

[0052] When the outboard motor is just started, the electronic throttle valve opens to a certain flow rate that is set to ensure that the temperature of the cold-sensitive cylinder 12 is within the required working range.

[0053] When the engine needs to accelerate rapidly or increase the torque, the temperature of the cold-sensitive cylinder 12 needs to be reduced instantly. At this time, the electronic throttle valve increases its opening as required, instantly increasing the flow of cooling water to achieve rapid cooling of the cold-sensitive cylinder 12.

[0054] When the engine needs to be decelerated or shut down suddenly, the temperature of the cold-sensitive cylinder 12 does not need to be reduced quickly. At this time, the electronic throttle valve reduces its opening as needed, and the cooling water flow rate decreases accordingly.

[0055] As an implementable embodiment, the driving wheel group includes a driving bevel gear 44, a forward gear bevel gear 45, a reverse gear bevel gear 46 and a tooth clutch 47; the driving bevel gear 44 is fixedly connected to the crankshaft 13, and is orthogonally meshed with the forward gear bevel gear 45 and the reverse gear bevel gear 46, the tooth clutch 47 is fixedly connected to the propeller shaft of the propeller 48, and the tooth clutch 47 moves linearly along the propeller shaft of the propeller 48, and cooperates with the forward gear bevel gear 45 and the reverse gear bevel gear 46.

[0056] The drive wheel set provided can better drive the propeller 48 to perform operations according to the required travel requirements, thereby controlling the movement of the outboard motor.

[0057] As an implementable embodiment, the housing includes an engine compartment, a transmission compartment and a drive compartment;

[0058] The drive device is installed in the engine compartment, and the engine compartment and the drive compartment are respectively fixed at the two ends of the drive compartment and sealed connected; the drive is located in the transmission compartment, and its two ends are deep into the engine compartment and the drive compartment.

[0059] As an implementable embodiment, the water circulation refrigeration unit includes a centrifugal water pump 43, a cooling water pipe 42 and a drain pipe;

[0060] The centrifugal water pump 43 is installed in the housing, one end of the cooling water pipe 42 is connected to the centrifugal water pump 43, the other end of the cooling water pipe 42 is connected to the water inlet of the cooling water channel of the cold-sensitive cylinder 12, and the drain outlet of the cooling water channel is connected to the outside.

[0061] As an implementation method, the chemical heating chamber includes a reaction chamber and at least two containers; the reaction chamber is connected to the thermosensitive cylinder 11, and the containers are connected to the reaction chamber. Solenoid valves are provided on the connection channels between the reaction chamber and the thermosensitive cylinder 11 and between the containers and the reaction chamber. Figure 2 In the illustrated embodiment, four containers are provided. Conventional reactants may be respectively contained in container A and container B, a reaction catalyst may be contained in container C, and a reaction inhibitor may be contained in container D.

[0062] By providing an easy way to store reactants and corresponding catalysts and inhibitors, and by providing an electromagnetic valve, the start, end and degree of the reaction can be effectively controlled, thereby achieving control over the start, stop and movement speed of the outboard motor.

[0063] As an implementable embodiment, the chemical heating chamber further includes a reactant discharge port; the reactant discharge port is disposed at the bottom of the reaction chamber and is communicated with the reaction chamber.

[0064] The set discharge port realizes the discharge of the substances after the reaction and ensures the continuity of the reaction.

[0065] As an implementable embodiment, the outboard motor further includes an operating system 2 and a suspension system 3; the operating system 2 and the suspension system 3 are both fixedly connected to the casing.

[0066] The outboard motor can be controlled through the operating system 2, and the suspension system 3 can suspend the required devices, thereby improving the applicability of the outboard motor.

[0067] As an implementable embodiment, the heat-sensitive cylinder 11 and the cold-sensitive cylinder 12 are filled with a fixed amount of gas.

[0068] By filling a fixed amount of gas in the heat-sensitive cylinder 11 and the cold-sensitive cylinder 12, the gas can push the piston to move according to heating and cooling, thereby ensuring the continuity of the movement.

[0069] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0070] Of course, various changes and substitutions can be made to the above description, and all of these changes and substitutions are within the spirit and scope of the present invention. Therefore, the present invention should not be limited except by the attached claims and their equivalents.

Claims

1. A special outboard motor capable of concealed underwater navigation, characterized in that: It includes a housing, a driving device and a transmission propulsion device; The driving device and the transmission propulsion device are respectively installed at the top and bottom of the shell, and the driving device includes a heat-sensitive cylinder, a chemical heating chamber, a cold-sensitive cylinder, a crankshaft, a magnetic motor flywheel and a water circulation refrigeration unit for refrigerating the cold-sensitive cylinder; the crankshaft is arranged along the length direction of the shell, the heat-sensitive cylinder and the cold-sensitive cylinder are located on the same side of the crankshaft, the chemical heating chamber is communicated with the heat-sensitive cylinder, the magnetic motor wind wheel is installed on the top of the crankshaft, and the crankshaft is in transmission connection with the transmission propulsion device; A thermosensitive piston is arranged in the thermosensitive cylinder, and the thermosensitive piston is drivingly connected to the crankshaft via a thermosensitive connecting rod; A cold-sensitive piston is arranged in the cold-sensitive cylinder, and the cold-sensitive piston is drivingly connected to the crankshaft through a cold-sensitive connecting rod. When the heat-sensitive piston moves to the leftmost side, the gas medium cavity of the heat-sensitive cylinder is connected to the cold-sensitive cylinder. The transmission propulsion device includes a driving wheel set and a propeller. The driving wheel set is drivingly connected to the crankshaft, and the driving wheel set is drivingly connected to the propeller.

2. The special outboard motor capable of concealed underwater navigation according to claim 1, characterized in that: The driving wheel set includes a driving bevel gear, a forward gear bevel gear, a reverse gear bevel gear and a tooth clutch; The active bevel gear is fixedly connected to the crankshaft and is orthogonally meshed with the forward gear bevel gear and the reverse gear bevel gear. The tooth clutch is fixedly connected to the propeller shaft. The tooth clutch moves linearly along the propeller shaft and cooperates with the forward gear bevel gear and the reverse gear bevel gear.

3. The special outboard motor capable of concealed underwater navigation according to claim 1, characterized in that: The housing includes an engine compartment, a transmission compartment and a drive compartment; The driving device is installed in the engine compartment, and the engine compartment and the driving compartment are respectively fixed at two ends of the driving compartment and are sealed and connected; The crankshaft is located in the transmission compartment, and both ends of the crankshaft extend deep into the engine compartment and the drive compartment.

4. The special outboard motor capable of concealed underwater navigation according to claim 1, characterized in that: The water circulation refrigeration unit includes a centrifugal water pump, a cooling water pipe and a drain pipe; The centrifugal water pump is installed in the housing, one end of the cooling water pipe is connected to the centrifugal water pump, the other end of the cooling water pipe is connected to the water inlet of the cooling water channel of the cold-sensitive cylinder, and the drain outlet of the cooling water channel is connected to the outside.

5. The special outboard motor capable of concealed underwater navigation according to claim 1, characterized in that: The chemical heating chamber includes a reaction chamber and at least two containers; The reaction chamber is communicated with the thermosensitive cylinder, the containers are communicated with the reaction chamber, and electromagnetic valves are arranged on the connection channels between the reaction chamber and the thermosensitive cylinder and between the containers and the reaction chamber.

6. The special outboard motor capable of concealed underwater navigation according to claim 5, characterized in that: The chemical heating chamber also includes a reactant discharge port; The reactant discharge port is arranged at the bottom of the reaction chamber, and the reactant discharge port is provided with a switch solenoid valve.

7. The special outboard motor capable of concealed underwater navigation according to claim 1, characterized in that: The outboard motor also includes an operating system and a suspension system; The operating system and the suspension system are both fixedly connected to the housing.

8. The special outboard motor capable of concealed underwater navigation according to claim 1, characterized in that: The heat-sensitive cylinder and the cold-sensitive cylinder are filled with a fixed amount of gas.

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