Three-way fork engine cooling device

Abstract

The application relates to the technical field of engine cooling systems, and discloses an intelligent three-way fork engine cooling device, which comprises a thermostat main valve body, a first valve core movably sleeved in the thermostat main valve body, a group of first ports and a group of second ports respectively arranged at the upper end and the lower end of one side of the outer surface of the thermostat main valve body and communicated to the interior of the thermostat main valve body, and a second flow guide ring groove arranged on the inner wall of the thermostat main valve body and located between the first ports and the second ports. The intelligent three-way fork engine cooling device is provided with the thermostat main valve body, the first valve core, the second valve core and the structure thereon, the liquid filled in the first valve core is expanded by heat to trigger the thermostat, the cooling device of the engine is converted from small circulation to large circulation, heat loss is reduced when the engine temperature is low, the heat on the engine is timely dissipated when the engine temperature is high, and the working temperature of the engine is ensured to be always within a proper range.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine cooling system, in particular to an intelligent three-way fork engine cooling device. BACKGROUND

[0002] The thermostat is a valve for controlling the flow path of the cooling liquid in the engine cooling system, which mainly adjusts the heat dissipation capacity of the cooling system by changing the circulation range of the cooling liquid, and ensures that the temperature of the engine is within a suitable range, so that overheating or low temperature does not occur, which is essential for the normal operation of the engine.

[0003] However, the existing thermostat is only a control structure for changing the flow direction of the cooling liquid, and the cooling of the engine is in a working mode of coexistence of liquid cooling and air cooling, that is, the flow direction of the cooling liquid is changed by the throttle to absorb the heat generated by the engine during operation, and then the heat carried by the cooling liquid is dissipated to the atmospheric environment through the air cooling system, so that there are two groups of temperature detection and opening and closing systems in the cooling system of the engine, which not only increases the structure of the cooling system, but also greatly affects the feedback speed of the engine temperature and the heat dissipation effect, and the stability and reliability are poor.

[0004] Therefore, there is an urgent need for a thermostat structure for an engine cooling device to solve the above-mentioned defects of the existing engine cooling system during operation. SUMMARY

[0005] (I) Technical problems solved

[0006] The present application provides an intelligent three-way fork engine cooling device, which has the advantages of forming feedback linkage between the liquid cooling system and the air cooling system in the engine cooling device through the thermostat, improving the heat dissipation effect of the engine, optimizing the structure of the cooling system, and having high stability and reliability, solving the problem that the existing thermostat is only a control structure for changing the flow direction of the cooling liquid, and the cooling of the engine is in a working mode of coexistence of liquid cooling and air cooling, and there are two groups of temperature detection and opening and closing systems in the liquid cooling and air cooling, which not only increases the structure of the engine cooling system, but also greatly affects the feedback speed of the engine temperature and the heat dissipation effect.

[0007] (II) Technical solutions

[0008] This invention provides the following technical solution: an intelligent three-way fork engine cooling device, comprising a thermostat main valve body, a first valve core movably sleeved inside the thermostat main valve body, a first port and a second port communicating with its interior respectively opened at the upper and lower ends of one side of the outer surface of the thermostat main valve body, a second flow guide ring groove opened on one side of the inner wall of the thermostat main valve body between the first port and the second port, a third port communicating with its interior on the other side of the outer surface of the thermostat main valve body between the first port and the second port, a first flow guide ring groove provided in the middle of the outer surface of the first valve core, a pressure spring movably sleeved at the bottom of the outer surface of the first valve core to form a transmission connection with the bottom of the inner cavity of the thermostat main valve body, and a second valve core movably sleeved at the top of the inner cavity of the first valve core, a movable end cap extending to the top of the top of the thermostat main valve body fixedly sleeved at the top of the outer surface of the second valve core, a tension spring movably sleeved in the inner cavity of the movable end cap to form a transmission connection with the top of the thermostat main valve body.

[0009] Preferably, the inner cavity of the first valve core and the sealed chamber formed by the second valve core are filled with liquid, and the first valve core is made of a metal material with good thermal conductivity.

[0010] Preferably, the elastic potential energy of the pressure spring is less than that of the tension spring, and in the initial state, a coolant flow channel is formed between the first port, the first guide ring groove on the first valve core, the second guide ring groove, and the second port, while the third port overlaps with the bottom of the outer surface of the first valve core and forms a seal against it.

[0011] Preferably, the maximum compression displacement of the pressure spring is equal to the inner diameter of the third port, and the distance between the bottom end of the first valve core and the bottom end of the second guide ring groove on the main valve body of the thermostat is equal to the maximum compression position of the pressure spring.

[0012] Preferably, a conductive ring is provided at the top of the inner wall of the first valve core, and a second conductive link is provided inside the top of the first valve core in contact with it. A resistance ring is provided at the bottom of the outer surface of the second valve core, and a first conductive link is provided inside the top of the first valve core in contact with it.

[0013] Preferably, the thermostat is electrically connected to the air-cooling system in the engine cooling device through the second conductive link and the first conductive link. In the initial state, the resistance ring on the second valve core and the conductive ring on the first valve core are staggered. At the same time, the distance between them is equal to the maximum compression of the pressure spring, and the resistance value on them decreases as they overlap.

[0014] (ii) Beneficial effects

[0015] The application has the following beneficial effects:

[0016] 1. The intelligent three-way fork engine cooling device, for the thermostat main valve body, the first valve core, the second valve core and the structure arranged thereon, the liquid filled on the first valve core is expanded by heat to trigger the thermostat, so that the cooling device of the engine is converted from small circulation to large circulation, to reduce heat loss when the engine temperature is low, and timely dissipate the heat thereon when the engine temperature is high, thereby ensuring that the working temperature of the engine is always within a suitable range, and the stability and reliability are high.

[0017] 2. The intelligent three-way fork engine cooling device, for the electrically conductive ring on the first valve core and the resistance ring on the second valve core, and the limitation of the elastic force between the tension spring and the pressure spring, to realize the linkage control between the liquid cooling system and the air cooling system of the engine cooling device in the thermostat, compared with the existing thermostat, the air cooling system in the cooling device greatly improves the response trigger of the engine temperature, optimizes the structure of the cooling device while improving the heat dissipation effect of the engine, and further improves the stability and reliability in the running process. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the application;

[0019] Figure 2 is a structural schematic diagram of the thermostat main valve body of the application;

[0020] Figure 3 is a connection schematic diagram between the first valve core and the second valve core of the application structure;

[0021] Figure 4 is a first state schematic diagram of the application structure;

[0022] Figure 5 is a second state schematic diagram of the application structure;

[0023] Figure 6 is a third state schematic diagram of the application structure.

[0024] In the figure: 1, thermostat main valve body; 2, first valve core; 3, pressure spring; 4, second valve core; 5, movable end cover; 6, tension spring; 7, first port; 8, second port; 9, third port; 10, resistance ring; 11, first electrically conductive connecting rod; 12, electrically conductive ring; 13, second electrically conductive connecting rod; 14, first flow guide ring groove; 15, second flow guide ring groove. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of the present application.

[0026] Please refer to Figure 1 An intelligent three-way fork engine cooling device, comprising a thermostat main valve body 1, a first valve core 2 movably sleeved in the thermostat main valve body 1, as shown in Figure 2 The upper and lower ends of one side of the outer surface of the thermostat main valve body 1 are respectively provided with a group of first ports 7 and second ports 8 communicated to the inside of the thermostat main valve body 1, and the first ports 7 and the second ports 8 form the flow of the cooling liquid between the thermostat and the liquid cooling system in the engine cooling device, so as to form a small circulation flow passage in the cooling device of the engine. A second flow guide ring groove 15 is formed in the inner wall of the thermostat main valve body 1 and located between the first port 7 and the second port 8. A group of third ports 9 are formed in the other side of the outer surface of the thermostat main valve body 1 and communicated to the inside of the thermostat main valve body 1, and the third ports 9 form the flow of the cooling liquid between the thermostat, the liquid cooling system in the engine cooling device and the air cooling system for cooling the cooling liquid, so as to form a large circulation flow passage in the engine cooling device, as shown in Figure 3 A first flow guide ring groove 14 is arranged in the middle of the outer surface of the first valve core 2. A pressure spring 3 is movably sleeved at the bottom of the outer surface of the first valve core 2 to form a transmission connection between the bottom of the inner cavity of the thermostat main valve body 1 and the top of the inner cavity of the first valve core 2. An inner cavity of the first valve core 2 movably sleeved with a second valve core 4. The top of the outer surface of the second valve core 4 is fixedly sleeved with a movable end cover 5, the bottom of which extends to the inside of the top end of the thermostat main valve body 1. The inner cavity of the movable end cover 5 movably sleeved with a tension spring 6 to form a transmission connection between the top end of the thermostat main valve body 1.

[0027] In the technical solution, the closed chamber formed by the inner cavity of the first valve core 2 and the second valve core 4 is filled with a liquid with a large thermal expansion coefficient and stable performance (such as water and other non-corrosive and non-toxic liquids), and the first valve core 2 is made of metal material with good heat conduction performance (such as copper, aluminum alloy, etc.).

[0028] In the technical solution, the elastic potential energy of the pressure spring 3 is smaller than the elastic potential energy of the tension spring 6. In the initial state, the flow channel of the cooling liquid is formed between the first port 7, the first flow guide ring groove 14 on the first valve core 2, the second flow guide ring groove 15 and the second port 8, and the third port 9 and the bottom of the outer surface of the first valve core 2 coincide with each other and form a seal thereon, so as to form a small circulation in the liquid cooling system of the engine cooling device and reduce the preheating time of the engine.

[0029] In this technical solution, the maximum compression displacement of the pressure spring 3 is equal to the inner diameter of the third port 9. At the same time, the distance between the bottom end of the first valve core 2 and the bottom end of the second guide ring groove 15 on the thermostat main valve body 1 is equal to the maximum compression position of the pressure spring 3. When the temperature of the coolant flowing through the thermostat reaches the preset value, the second port 8 can be automatically sealed while the third port 9 is fully opened, and a large circulation is formed between the second port 8 and the air-cooling system of the engine cooling device to provide heat dissipation for the engine.

[0030] In this technical solution, a conductive ring 12 is provided at the top of the inner wall of the first valve core 2, and a second conductive link 13 in contact with it is provided inside the top of the first valve core 2. A resistance ring 10 is provided at the bottom of the outer surface of the second valve core 4, and a first conductive link 11 in contact with it is provided inside the top of the first valve core 2.

[0031] In this technical solution, the thermostat is electrically connected to the air-cooling system in the engine cooling device through the second conductive link 13 and the first conductive link 11. In the initial state, the resistance ring 10 on the second valve core 4 and the conductive ring 12 on the first valve core 2 are staggered. At the same time, the distance between them is equal to the maximum compression of the pressure spring 3, and the resistance value on them decreases as they overlap.

[0032] The usage method and working principle of this embodiment are as follows:

[0033] like Figure 4 As shown, the thermostat is in its first state, i.e., the small circulation stage:

[0034] When the engine starts at a low temperature, the liquid cooling system in the cooling device is activated simultaneously with the engine start-up. This causes the coolant to form a small circulation through the first port 7 on the thermostat main valve body 1, the first guide ring groove 14 on the first valve core 2, and the second guide ring groove 15 and the second port 8 on the thermostat main valve body 1. At the same time, the liquid filled in the first valve core 2 cannot resist the elastic force of the pressure spring 3 due to thermal expansion and remains stationary. This allows the coolant to circulate in a small loop between the engine and the cooling device, effectively alleviating heat loss from the engine and shortening the engine's preheating time.

[0035] like Figure 5 As shown, the thermostat is in the second state, namely the large circulation stage:

[0036] When the engine is in normal working condition and its temperature rises, as the heat carried by the coolant increases, it is transferred to the liquid filled in the inner cavity of the first valve core 2, causing it to thermally expand. Under the elastic force of the tension spring 6, the first valve core 2 moves downward to compress the pressure spring 3, causing the bottom of the outer surface of the first valve core 2 and the third port 9 to be misaligned, and the channel is gradually opened, thereby enabling the cooling device on the engine to form a large circulation to perform heat dissipation.

[0037] like Figure 6 As shown, the thermostat is in its third stage, which triggers the air-cooled system in the engine cooling system.

[0038] When the engine is in a prolonged operating state and its temperature is high, the coolant temperature rises again as the large circulation of the cooling device is triggered, and is continuously transferred to the liquid filled in the inner cavity of the first valve core 2, increasing its thermal expansion. At this time, the compression of the pressure spring 3 has reached its limit, which forces the second valve core 4 to move upward to stretch the tension spring 6. This causes the relative positions of the conductive ring 12 on the first valve core 2 and the resistive ring 10 on the second valve core 4 to begin to coincide, thereby connecting the air-cooling system on the engine cooling device and accelerating the heat dissipation effect of the coolant, thus effectively improving its heat dissipation effect on the engine.

[0039] 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 process, method, article, or apparatus.

[0040] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-way fork engine cooling device, comprising a thermostat main valve body (1), a first valve core (2) is sleeved in the inside of the thermostat main valve body (1), characterized in that: The upper and lower ends of one side of the outer surface of the thermostat main valve body (1) are respectively provided with a group of first ports (7) and second ports (8) communicated to the inside thereof, a second flow guide ring groove (15) is formed in the inner wall of the thermostat main valve body (1) on one side and between the first port (7) and the second port (8), a group of third ports (9) communicated to the inside thereof are formed on the other side of the outer surface of the thermostat main valve body (1) and between the first port (7) and the second port (8), a first flow guide ring groove (14) is arranged on the middle part of the outer surface of the first valve core (2), a pressure spring (3) is movably sleeved on the bottom of the outer surface of the first valve core (2) to form a transmission connection between the bottom of the inner cavity of the thermostat main valve body (1), and the top of the inner cavity of the first valve core (2) movably sleeves a second valve core (4), the top of the outer surface of the second valve core (4) fixedly sleeves a movable end cover (5) with the bottom end extending to the inside of the top end of the thermostat main valve body (1), the inner cavity of the movable end cover (5) movably sleeves a tension spring (6) to form a transmission connection between the top end of the thermostat main valve body (1). The top of the inner wall of the first valve core (2) is provided with a conductive ring (12), and the inside of the top end of the first valve core (2) is provided with a second conductive connecting rod (13) in contact therewith, the bottom of the outer surface of the second valve core (4) is provided with a resistance ring (10), and the inside of the top end of the first valve core (2) is provided with a first conductive connecting rod (11) in contact therewith. The thermostat forms an electrical connection between the second conductive connecting rod (13), the first conductive connecting rod (11) and the air cooling system in the engine cooling device, and in the initial state, the resistance ring (10) on the second valve core (4) and the conductive ring (12) on the first valve core (2) are in a mutually staggered state, and the distance therebetween is equal to the maximum compression amount of the pressure spring (3), and in the process of overlapping each other, the electrical resistance value thereon decreases.

2. A three-way fork engine cooling device according to claim 1, characterized in that: The inner cavity of the first valve core (2) and the second valve core (4) form a sealed chamber filled with liquid, and the first valve core (2) is made of metal material with good heat conduction performance.

3. A three-way fork engine cooling device according to claim 2, characterized in that: The elastic potential energy of the pressure spring (3) is less than that of the tension spring (6), and in the initial state, the first port (7), the first flow guide ring groove (14) on the first valve core (2), the second flow guide ring groove (15) and the second port (8) form a cooling liquid flow channel, and the third port (9) and the bottom of the outer surface of the first valve core (2) overlap each other and form a seal therebetween.

4. A three-way fork engine cooling device according to claim 3, characterized in that: The maximum compression displacement amount of the pressure spring (3) is equal to the inner diameter of the third port (9), and the distance between the bottom end of the first valve core (2) and the bottom end of the second flow guide ring groove (15) on the thermostat main valve body (1) is equal to the maximum compression position amount of the pressure spring (3).

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