An engine ultra-low temperature automatic preheating device

Abstract

The present invention provides an engine ultra-low temperature automatic preheating device, which relates to the technical field of engine preheating, and includes: a temperature measuring body; the temperature measuring body is in contact with the outside of the engine, and the contact surface between the temperature measuring body and the engine is coated with thermal conductive silicone grease; a bolt is installed in the end of the temperature measuring body, and the temperature measuring body is connected to the engine through the bolt; a movable plug, a pull rope and a pull-type switch are installed in the temperature measuring body from the inside to the outside in sequence, and the pull-type switch is connected to the movable plug through the pull rope. The present invention utilizes the thermal expansion and contraction principle of mineral oil to drive the movable plug to move, controls the pull-type switch, turns on the electric heating shell and the circulating pump, and automatically realizes the engine preheating effect, with high reliability. It solves the problem that the automatic start and stop control of the existing engine ultra-low temperature automatic preheating device is generally realized by a temperature sensor and a control system. When used in extremely cold temperature conditions in winter, it is very easy to cause the temperature sensor to fail, affecting the automatic preheating effect.

Description

Technical Field

[0001] The invention relates to the technical field of engine preheating, and in particular to an engine ultra-low temperature automatic preheating device. Background Art

[0002] An engine is a machine that can convert other forms of energy into mechanical energy, including internal combustion engines, external combustion engines, jet engines, electric motors, etc.; for example, internal combustion engines usually convert chemical energy into mechanical energy; in large areas of my country, especially in the north of the Yangtze River, after winter, the temperature drops, making it impossible for the engines on many vehicles to start normally, causing many inconveniences. Therefore, when designing the engine, it is usually equipped with a special ultra-low temperature automatic preheating device to prevent the engine temperature from being too low.

[0003] In the current application of the existing engine ultra-low temperature automatic preheating device, the automatic start and stop of the device is generally achieved through temperature sensors and control systems, which has poor reliability. When used in extremely cold temperatures in winter, it is very easy to cause temperature sensor failure, affecting the automatic preheating effect of the engine in low temperature environments. Summary of the invention

[0004] The present invention relates to an ultra-low temperature automatic preheating device for an engine, which solves the problem that in the application process of the existing ultra-low temperature automatic preheating device for an engine, the automatic start and stop of the device is generally realized by a temperature sensor and a control system, and the reliability is poor. When used in extremely cold temperature conditions in winter, the temperature sensor may easily fail, thereby affecting the automatic preheating effect of the engine in a low temperature environment.

[0005] In a first aspect of the present disclosure, an engine ultra-low temperature automatic preheating device is provided, which specifically includes: a temperature measuring body, a movable plug, a pull-type switch, a pull rope, a force-bearing plug, a spring A, a pressure relief plug, a bolt, a heat conductor, an electric heating shell and a circulating pump; the temperature measuring body is in contact with the outside of the engine, and the contact surface between the temperature measuring body and the engine is coated with thermal conductive silicone grease; a bolt is installed in the end of the temperature measuring body, and the temperature measuring body is connected to the engine through the bolt; the interior of the temperature measuring body is sequentially installed with a movable plug, a pull rope and a pull-type switch from the inside to the outside, and the pull-type switch is connected to the movable plug through the pull rope; the interior of the temperature measuring body is sequentially installed with a pressure relief plug, a spring A and a force-bearing plug from the inside to the outside, and the force-bearing plug is connected to the pressure relief plug through the spring A; the electric heating shell is mounted on the outside of the heat conductor, and the circulating pump is connected to the outside of the heat conductor; the pull-type switch is connected to the vehicle power supply line, the electric heating shell is electrically connected to the pull-type switch through the line, and the circulating pump is electrically connected to the pull-type switch through the line.

[0006] Furthermore, a heating channel is provided inside the heat conductor, and the heating channel is curved. The liquid inlet end of the heating channel is connected to the liquid outlet end of the circulating heat dissipation pipeline inside the engine, the liquid outlet end of the heating channel is connected to the liquid inlet end of the circulating pump, and the liquid outlet end of the circulating pump is connected to the liquid inlet end of the circulating heat dissipation pipeline inside the engine.

[0007] Furthermore, a temperature measuring cavity, a filling pipe and an opening and closing pipe are arranged inside the temperature measuring body; the temperature measuring cavity is connected with the filling pipe and the opening and closing pipe, and the temperature measuring cavity is filled with mineral oil.

[0008] Furthermore, a rubber sealing ring is installed on the outside of the movable plug, and the movable plug is slidably connected to the opening and closing pipe of the temperature measuring body. A limiting slide groove is arranged inside the opening and closing pipe, and a limiting block is arranged outside the movable plug, and the limiting block is slidably connected to the limiting slide groove.

[0009] Furthermore, the pull-type switch is threadedly connected to the end of the opening and closing pipe provided on the temperature measuring body, and a pressure-stabilizing hole is provided on the outside of the temperature measuring body, and the pressure-stabilizing hole is connected to the opening and closing pipe.

[0010] Furthermore, a pull hole A is provided at the end of the movable plug, a pull hole B is provided outside the pull switch, the pull rope is located in the opening and closing pipe provided in the temperature measuring body, one end of the pull rope is connected to the pull hole A, and the other end of the pull rope is connected to the pull hole B.

[0011] Furthermore, a rubber sealing ring is installed on the outside of the pressure relief plug, and the pressure relief plug is slidably connected to the filling pipe provided in the temperature measuring body. The spring A is located in the filling pipe, and one end of the spring A is fixedly connected to the pressure relief plug.

[0012] Furthermore, the stressed plug is threadedly connected to the end of the filling pipe provided on the temperature measuring body, the other end of the spring A is fixedly connected to the stressed plug, a pressure relief hole is provided inside the stressed plug, and the pressure relief hole is connected to the filling pipe.

[0013] Furthermore, connecting holes are provided at the four ends of the temperature measuring body, bolts are inserted into the connecting holes, the ends of the bolts are threadedly connected to the threaded blind holes provided on the outside of the engine, a spring B is mounted on the outside of the bolt, one end of the spring B is in contact with the temperature measuring body, and the other end of the spring B is in contact with the bolt.

[0014] The present invention provides an engine ultra-low temperature automatic preheating device, which has the following beneficial effects:

[0015] When the present invention is in use, when the engine is in an ultra-low temperature state, the electric heating shell and the circulating pump are turned on, and the coolant in the circulating heat dissipation pipeline inside the engine enters the heating channel for circulation, and the electric heating shell heats the coolant in the heating channel to preheat the engine. The heating channel is designed to be curved to extend the cooling path of the coolant, thereby effectively avoiding damage to the engine caused by ultra-low temperature startup.

[0016] In addition, the moving distance of the movable plug is limited by the sliding cooperation between the limit block and the limit slide groove. During the movement of the movable plug, the pressure-stabilizing hole has the effect of relieving pressure inside the opening and closing pipeline; when the engine is in an ultra-low temperature state, the volume of the mineral oil in the temperature measuring chamber shrinks, and the mineral oil drives the movable plug to move inward, the pull rope is stretched and stressed, and the movable plug applies a pulling force to the pull-type switch through the pull rope. The pull-type switch is in a passage state, and the electric heating shell and the circulating pump are turned on, and the engine preheating effect is automatically achieved with high reliability; when the engine temperature rises, the volume of the mineral oil in the temperature measuring chamber expands, and the mineral oil pushes the movable plug to move outward, the pull rope is bent and not stressed, and the pull-type switch is in a circuit-breaking state, and the electric heating shell and the circulating pump are turned off, achieving a power saving effect.

[0017] In addition, during the movement of the pressure relief plug, the pressure relief hole has the effect of relieving pressure inside the filling pipe. When the temperature of the mineral oil inside the temperature measuring chamber is too high, the mineral oil pushes the pressure relief plug outward, and the spring A is in a compressed and force-accumulating state. Part of the mineral oil enters the filling pipe, avoiding excessive pressure inside the temperature measuring chamber and playing a protective role. When the temperature of the mineral oil inside the temperature measuring chamber gradually decreases, the pressure relief plug is reset under the influence of the thrust of spring A, and the mineral oil in the filling pipe is pushed into the temperature measuring chamber through the pressure relief plug. The spring B applies thrust to the temperature measuring body, so that the temperature measuring body is in close contact with the engine, ensuring the heat conduction effect between the engine and the temperature measuring body, thereby ensuring the device's perception of the engine temperature.

[0018] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0020] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0021] In the attached picture:

[0022] Figure 1 The overall axial side structure schematic diagram of the engine ultra-low temperature automatic preheating device of the present application is shown;

[0023] Figure 2A schematic diagram showing the temperature measuring body and bolt separation structure of the engine ultra-low temperature automatic preheating device of the present application is shown;

[0024] Figure 3 A schematic diagram of the installation structure of the movable plug, the pull switch, the pull rope, the force-bearing plug, the spring A and the pressure relief plug inside the temperature measuring body of the engine ultra-low temperature automatic preheating device of the present application is shown;

[0025] Figure 4 A schematic diagram of the internal cross-sectional structure of the temperature measuring body of the engine ultra-low temperature automatic preheating device of the present application is shown;

[0026] Figure 5 A schematic diagram showing the split structure of the movable plug, the pull switch and the pull rope of the engine ultra-low temperature automatic preheating device of the present application is shown;

[0027] Figure 6 A schematic diagram showing the disassembled structure of the force-bearing plug, spring A and pressure relief plug of the engine ultra-low temperature automatic preheating device of the present application is shown;

[0028] Figure 7 A schematic diagram of the internal cross-sectional structure of the heat conductor of the engine ultra-low temperature automatic preheating device of the present application is shown.

[0029] Reference numerals list

[0030] 1. Temperature measuring body; 101. Temperature measuring chamber; 102. Filling pipeline; 103. Opening and closing pipeline; 1031. Limiting slide; 104. Pressure stabilizing hole; 105. Connecting hole; 2. Movable plug; 201. Limiting block; 202. Pull hole A; 3. Pull switch; 301. Pull hole B; 4. Pull rope; 5. Forced plug; 501. Pressure relief hole; 6. Spring A; 7. Pressure relief plug; 8. Bolt; 9. Spring B; 10. Heat conductor; 1001. Temperature rising channel; 11. Electric heating shell; 12. Circulation pump. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figures 1 to 7 :

[0033] The present invention proposes an engine ultra-low temperature automatic preheating device, comprising: a temperature measuring body 1, a movable plug 2, a pull-type switch 3, a pull rope 4, a force plug 5, a spring A6, a pressure relief plug 7, a bolt 8, a heat conductor 10, an electric heating shell 11 and a circulating pump 12; the temperature measuring body 1 is in contact with the outside of the engine, and the contact surface between the temperature measuring body 1 and the engine is coated with thermal conductive silicone grease; a bolt 8 is installed in the end of the temperature measuring body 1, and the temperature measuring body 1 is connected to the engine through the bolt 8; the movable plug 2, the pull rope 4 and the pull-type switch 3 are installed in the temperature measuring body 1 from the inside to the outside, and the pull-type switch 3 is connected to the movable plug 2 through the pull rope 4; the pressure relief plug 7, the spring A6 and the force plug 5 are installed in the temperature measuring body 1 from the inside to the outside, and the force plug 5 is connected to the pressure relief plug 7 through the spring A6; the electric heating shell 11 is mounted on the outside of the heat conductor 10, and the circulating pump 12 is connected to the outside of the heat conductor 10; the pull-type switch 3 is connected to the vehicle power supply circuit The electric heating shell 11 is electrically connected to the pull-type switch 3 through a circuit, and the circulating pump 12 is electrically connected to the pull-type switch 3 through a circuit; a heating channel 1001 is arranged inside the heat conductor 10, and the heating channel 1001 is curved, the liquid inlet end of the heating channel 1001 is connected to the liquid outlet end of the internal circulation heat dissipation pipeline of the engine, the liquid outlet end of the heating channel 1001 is connected to the liquid inlet end of the circulating pump 12, and the liquid outlet end of the circulating pump 12 is connected to the liquid inlet end of the internal circulation heat dissipation pipeline of the engine; when the engine is in an ultra-low temperature state, the electric heating shell 11 and the circulating pump 12 are turned on, and the coolant in the internal circulation heat dissipation pipeline of the engine enters the heating channel 1001 for circulation, and the electric heating shell 11 heats the coolant in the heating channel 1001 to preheat the engine, and the heating channel 1001 is designed to be curved to extend the cooling path of the coolant, thereby effectively avoiding damage to the engine caused by ultra-low temperature startup.

[0034] In the embodiment of the present disclosure, a temperature measuring chamber 101, a filling pipe 102 and an opening and closing pipe 103 are arranged inside the temperature measuring body 1, the temperature measuring chamber 101 is connected with the filling pipe 102 and the opening and closing pipe 103, the temperature measuring chamber 101 is filled with mineral oil, a rubber sealing ring is installed outside the movable plug 2, the movable plug 2 is slidably connected to the opening and closing pipe 103 provided in the temperature measuring body 1, a limited position slide groove 1031 is arranged inside the opening and closing pipe 103, a limited position block 201 is arranged outside the movable plug 2, and the limit block 201 Slidingly connected to the limit slide groove 1031, the pull-type switch 3 is threadedly connected to the end of the opening and closing pipe 103 provided in the temperature measuring body 1, the temperature measuring body 1 is provided with a pressure stabilizing hole 104 on the outside, the pressure stabilizing hole 104 is connected to the opening and closing pipe 103, the end of the movable plug 2 is provided with a pulling hole A202, the pull-type switch 3 is provided with a pulling hole B301 on the outside, the pull rope 4 is located in the opening and closing pipe 103 provided in the temperature measuring body 1, one end of the pull rope 4 is connected to the pulling hole A202, and the other end of the pull rope 4 is connected to the pulling hole B301;

[0035] By adopting the above technical scheme, the moving distance of the movable plug 2 is limited by sliding cooperation between the limit block 201 and the limit slide groove 1031. During the movement of the movable plug 2, the pressure-stabilizing hole 104 has the effect of relieving the pressure inside the opening and closing pipeline 103; when the engine is in an ultra-low temperature state, the volume of the mineral oil in the temperature measuring chamber 101 shrinks, and the mineral oil drives the movable plug 2 to move inward, the pull rope 4 is stretched and stressed, and the movable plug 2 applies a pulling force to the pull-type switch 3 through the pull rope 4, and the pull-type switch 3 is in a passage state, turning on the electric heating shell 11 and the circulating pump 12, and automatically realizing the engine preheating effect with high reliability; when the engine temperature rises, the volume of the mineral oil in the temperature measuring chamber 101 expands, and the mineral oil pushes the movable plug 2 to move outward, the pull rope 4 is bent and not stressed, and the pull-type switch 3 is in a circuit-breaking state, turning off the electric heating shell 11 and the circulating pump 12, achieving the effect of saving electricity.

[0036] In the embodiment of the present disclosure, a rubber sealing ring is installed on the outside of the pressure relief plug 7, and the pressure relief plug 7 is slidably connected to the filling pipe 102 provided in the temperature measuring body 1. The spring A6 is located in the filling pipe 102, and one end of the spring A6 is fixedly connected to the pressure relief plug 7. The force plug 5 is threadedly connected to the end of the filling pipe 102 provided in the temperature measuring body 1, and the other end of the spring A6 is fixedly connected to the force plug 5. A pressure relief hole 501 is provided inside the force plug 5, and the pressure relief hole 501 is connected to the filling pipe 102;

[0037] By adopting the above technical solution, during the movement of the pressure relief plug 7, the pressure relief hole 501 has the effect of relieving pressure inside the filling pipe 102. When the temperature of the mineral oil inside the temperature measuring chamber 101 is too high, the mineral oil pushes the pressure relief plug 7 to move outward, and the spring A6 is in a compressed and force-accumulating state. Part of the mineral oil enters the filling pipe 102, thereby preventing the internal pressure of the temperature measuring chamber 101 from being too high, thereby achieving a protective effect. When the temperature of the mineral oil inside the temperature measuring chamber 101 gradually decreases, the pressure relief plug 7 is reset under the influence of the thrust of the spring A6, and the mineral oil in the filling pipe 102 is pushed into the temperature measuring chamber 101 through the pressure relief plug 7.

[0038] Embodiment 2, on the basis of embodiment 1, the four ends of the temperature measuring body 1 are provided with connecting holes 105, the bolt 8 runs through the connecting hole 105, the end of the bolt 8 is threadedly connected to the threaded blind hole provided on the outside of the engine, and a spring B9 is sleeved on the outside of the bolt 8, one end of the spring B9 contacts the temperature measuring body 1, and the other end of the spring B9 contacts the bolt 8;

[0039] By adopting the above technical solution, the spring B9 applies thrust to the temperature measuring body 1, so that the temperature measuring body 1 is in close contact with the engine, ensuring the heat conduction effect between the engine and the temperature measuring body 1, thereby ensuring the device's perception effect on the engine temperature.

[0040] The working principle of this embodiment is as follows: when the engine is in an ultra-low temperature state, the volume of the mineral oil inside the temperature measuring cavity 101 shrinks, and the mineral oil drives the movable plug 2 to move inward, the pull rope 4 is stretched and stressed, and the movable plug 2 applies tension to the pull switch 3 through the pull rope 4, and the pull switch 3 is in a passage state, turning on the electric heating shell 11 and the circulating pump 12; the coolant in the circulating heat dissipation pipeline inside the engine enters the heating channel 1001 for circulation, and the electric heating shell 11 heats the coolant in the heating channel 1001 to preheat the engine. The heating channel 1001 is designed to be curved to extend the cooling path of the coolant, effectively avoiding damage to the engine caused by ultra-low temperature startup; when the engine temperature rises, the volume of the mineral oil inside the temperature measuring cavity 101 expands, and the mineral oil pushes the movable plug 2 to The pull rope 4 is bent and not stressed, the pull switch 3 is in an open circuit state, the electric heating shell 11 and the circulating pump 12 are turned off, and power saving effect is achieved; when the temperature of the mineral oil inside the temperature measuring chamber 101 is too high, the mineral oil pushes the pressure relief plug 7 to move outward, the spring A6 is in a compressed and force-accumulating state, and part of the mineral oil enters the filling pipe 102, so as to avoid excessive pressure inside the temperature measuring chamber 101 and achieve a protective effect; when the temperature of the mineral oil inside the temperature measuring chamber 101 gradually decreases, the pressure relief plug 7 is reset under the influence of the thrust of the spring A6, and the mineral oil in the filling pipe 102 is pushed into the temperature measuring chamber 101 through the pressure relief plug 7; and the spring B9 applies thrust to the temperature measuring body 1, so that the temperature measuring body 1 is in close contact with the engine, thereby ensuring the heat conduction effect between the engine and the temperature measuring body 1, thereby ensuring the device's perception effect of the engine temperature.

[0041] In this article, there are a few points to note:

[0042] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0043] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0044] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. An engine ultra-low temperature automatic preheating device, comprising: A temperature measuring body (1), a movable plug (2), a pull switch (3), a pull rope (4), a force-bearing plug (5), a spring A (6), a pressure relief plug (7), a bolt (8), a heat conductor (10), an electric heating shell (11) and a circulating pump (12); characterized in that the temperature measuring body (1) is in contact with the outside of the engine, and the contact surface between the temperature measuring body (1) and the engine is coated with thermal conductive silicone grease; a bolt (8) is installed in the end of the temperature measuring body (1), and the temperature measuring body (1) is screwed in The bolt (8) is connected to the engine; the temperature measuring body (1) is provided with a movable plug (2), a pull rope (4) and a pull switch (3) in sequence from the inside to the outside, and the pull switch (3) is connected to the movable plug (2) via the pull rope (4); the temperature measuring body (1) is provided with a pressure relief plug (7), a spring A (6) and a force plug (5) in sequence from the inside to the outside, and the force plug (5) is connected to the pressure relief plug (7) via the spring A (6); the heat conductor (10) is provided with an electric The heat conductor (10) is provided with a heating shell (11), and a circulating pump (12) is connected to the outside of the heat conductor (10); the pull-type switch (3) is connected to the vehicle power supply line, the electric heating shell (11) is electrically connected to the pull-type switch (3) through the line, and the circulating pump (12) is electrically connected to the pull-type switch (3) through the line; a heating channel (1001) is provided inside the heat conductor (10), and the heating channel (1001) is curved, and the liquid inlet end of the heating channel (1001) is connected to the internal circulating heat dissipation of the engine. The liquid outlet end of the heat pipe is connected, the liquid outlet end of the temperature rising channel (1001) is connected to the liquid inlet end of the circulation pump (12), and the liquid outlet end of the circulation pump (12) is connected to the liquid inlet end of the circulating heat dissipation pipe inside the engine; the temperature measuring body (1) is provided with a temperature measuring cavity (101), a filling pipe (102) and an opening and closing pipe (103); the temperature measuring cavity (101) is connected to the filling pipe (102) and the opening and closing pipe (103), and the temperature measuring cavity (101) is filled with mineral oil.

2. The engine ultra-low temperature automatic preheating device according to claim 1, characterized in that: A rubber sealing ring is installed on the outside of the movable plug (2), and the movable plug (2) is slidably connected to an opening and closing pipe (103) provided on the temperature measuring body (1), and a limiting slide groove (1031) is provided inside the opening and closing pipe (103), and a limiting block (201) is provided on the outside of the movable plug (2), and the limiting block (201) is slidably connected to the limiting slide groove (1031).

3. The engine ultra-low temperature automatic preheating device according to claim 1, characterized in that: The pull-type switch (3) is threadedly connected to the end of an opening and closing pipe (103) provided on the temperature measuring body (1); a pressure stabilizing hole (104) is provided outside the temperature measuring body (1); the pressure stabilizing hole (104) is connected to the opening and closing pipe (103).

4. The engine ultra-low temperature automatic preheating device according to claim 1, characterized in that: The end of the movable plug (2) is provided with a pull hole A (202), the outside of the pull switch (3) is provided with a pull hole B (301), the pull rope (4) is located in an opening and closing pipe (103) provided in the temperature measuring body (1), one end of the pull rope (4) is connected to the pull hole A (202), and the other end of the pull rope (4) is connected to the pull hole B (301).

5. The engine ultra-low temperature automatic preheating device according to claim 1, characterized in that: A rubber sealing ring is installed on the outside of the pressure relief plug (7). The pressure relief plug (7) is slidably connected to a filling pipe (102) provided in the temperature measuring body (1). The spring A (6) is located in the filling pipe (102), and one end of the spring A (6) is fixedly connected to the pressure relief plug (7).

6. The engine ultra-low temperature automatic preheating device according to claim 1, characterized in that: The stressed plug (5) is threadedly connected to the end of a filling pipe (102) provided on the temperature measuring body (1); the other end of the spring A (6) is fixedly connected to the stressed plug (5); a pressure relief hole (501) is provided inside the stressed plug (5); and the pressure relief hole (501) is connected to the filling pipe (102).

7. The engine ultra-low temperature automatic preheating device according to claim 1, characterized in that: The temperature measuring body (1) is provided with connecting holes (105) at four ends, the bolts (8) are inserted into the connecting holes (105), the ends of the bolts (8) are threadedly connected to threaded blind holes provided on the outside of the engine, a spring B (9) is sleeved on the outside of the bolt (8), one end of the spring B (9) is in contact with the temperature measuring body (1), and the other end of the spring B (9) is in contact with the bolt (8).

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