Integrated electronic thermolator

Abstract

The utility model discloses an integrated electronic thermolator which comprises a bottom cover, a first upper cover and a second upper cover, the first upper cover and the second upper cover are arranged on the bottom cover, a first liquid inlet space is formed in the first upper cover, a first thermostat is arranged in the first liquid inlet space, and the first upper cover is provided with an EGR cooler water return connector, a cylinder cover water return connector and an engine water outlet connector which are communicated with the first liquid inlet space. The bottom cover is provided with a liquid inlet communicated with the first liquid inlet space, the first thermostat separates or communicates the liquid inlet with the first liquid inlet space, a second liquid inlet space is formed in the second upper cover, a second thermostat is arranged in the second upper cover, and the second upper cover is provided with an engine water inlet connector and a water pump water inlet connector. The first thermostat is provided with a first liquid inlet space and a second liquid inlet space, a communication channel communicated with the first liquid inlet space and the second liquid inlet space is formed in the bottom cover, the second thermostat is provided with a first control valve block and a second control valve block, the first control valve block separates or communicates the engine water inlet connector and the second liquid inlet space, and the second control valve block separates or communicates the first liquid inlet space and the second liquid inlet space.

Description

TECHNICAL FIELD

[0001] The utility model relates to temperature regulator technical field, concretely relates to an integrated electronic temperature regulator. BACKGROUND

[0002] The cooling system of the current automobile engine is forced circulation water cooling system, that is, the water pump is used to increase the pressure of the cooling liquid, and the cooling liquid is forced to circulate in the engine. The cooling system is mainly composed of a water pump, a radiator, a cooling fan, a compensation water tank, a thermostat, a water jacket in an engine body and a cylinder head, and an auxiliary device.

[0003] In the existing engine thermal management system, the water temperature of multiple components such as the cylinder body, the cylinder head and the control cooler needs to be controlled at the same time, so multiple temperature regulators are needed for adjustment and control, resulting in complex structure, multiple pipelines, multiple parts, large volume and large weight. UTILITY MODEL CONTENT

[0004] To solve the technical problems in the background art, the utility model provides an integrated electronic temperature regulator.

[0005] The technical scheme adopted by the utility model to solve the technical problems is as follows:

[0006] An integrated electronic temperature regulator comprises a bottom cover, a first upper cover and a second upper cover arranged on the bottom cover.

[0007] A first liquid inlet space is formed in the first upper cover, a first thermostat is arranged in the first liquid inlet space, an EGR cooler return water interface, a cylinder head return water interface and an engine water outlet interface that communicate with the first liquid inlet space are formed on the first upper cover, a liquid inlet that communicates with the first liquid inlet space is formed on the bottom cover, and the first thermostat blocks or communicates the liquid inlet and the first liquid inlet space according to temperature change.

[0008] A second liquid inlet space is formed in the second upper cover, a second thermostat is arranged in the second upper cover, an engine water inlet interface and a water pump water inlet interface that communicate with the second liquid inlet space are formed on the second upper cover, a communication channel that communicates with the first liquid inlet space and the second liquid inlet space is formed on the bottom cover, the second thermostat has a first control valve piece and a second control valve piece, the first control valve piece blocks or communicates the engine water inlet interface and the second liquid inlet space according to temperature change, and the second control valve piece blocks or communicates the first liquid inlet space and the second liquid inlet space according to temperature change.

[0009] The temperature regulator has a cold start state, a normal running state and a high temperature state, when the temperature regulator is in the cold start state, the cooling liquid enters the first liquid inlet space through the cylinder head return water interface, then enters the second liquid inlet space through the communication channel, and is discharged from the water pump water inlet interface, so as to form a first circulation channel.

[0010] When the temperature regulator is in the normal operation state, the cooling liquid enters the first liquid inlet space through the EGR cooler backwater interface, the cylinder head backwater interface and the liquid inlet, part of the cooling liquid enters the second liquid inlet space along the connecting channel and is discharged through the water pump water inlet interface, and the other part of the cooling liquid enters the engine water inlet interface along the engine water outlet interface, and then enters the second liquid inlet space through the engine water inlet interface and is discharged through the water pump water inlet interface to form a second circulation channel.

[0011] When the temperature regulator is in the high-temperature state, the cooling liquid enters the first liquid inlet space through the EGR cooler backwater interface, the cylinder head backwater interface and the liquid inlet, all of the cooling liquid enters the second liquid inlet space through the engine water inlet interface and is discharged through the water pump water inlet interface to form a third circulation channel.

[0012] Preferably, when the temperature regulator is in the cold start state, the first thermostat separates the liquid inlet and the first liquid inlet space, the first control valve separates the engine water inlet interface and the second liquid inlet space, and the second control valve connects the second liquid inlet space and the connecting channel. Through the above improvement, when the vehicle is cold started, the temperature in the engine is not high, only small circulation is needed, at this time the first thermostat separates the liquid inlet and the first liquid inlet space, the first control valve separates the engine water inlet interface and the second liquid inlet space, and the second control valve connects the second liquid inlet space and the connecting channel, so that the temperature of the engine is raised to the optimum temperature in the shortest time.

[0013] Preferably, when the temperature regulator is in the normal operation state, the first thermostat connects the liquid inlet and the first liquid inlet space, the first control valve connects the engine water inlet interface and the second liquid inlet space, and the second control valve connects the second liquid inlet space and the connecting channel. Through the above improvement, when the engine is normally working, the temperature of the engine is in a normal state, at this time the first thermostat connects the liquid inlet and the first liquid inlet space, the first control valve connects the engine water inlet interface and the second liquid inlet space, and the second control valve connects the second liquid inlet space and the connecting channel, so that small circulation and large circulation are carried out at the same time, and the temperature of the engine and other components is maintained at a suitable temperature.

[0014] Preferably, when the temperature regulator is in a high temperature state, the first thermostat communicates the liquid inlet with the first liquid space, the first control valve disc communicates the engine water inlet with the second liquid space, and the second control valve disc separates the second liquid space and the communication channel, so that the internal waterway only performs a large circulation, thereby rapidly reducing the temperature of the engine and other components.

[0015] Preferably, the first thermostat is an inverted mechanical thermostat, the action end of the first thermostat moves downward to shield the liquid inlet, the second thermostat is a normal electronic thermostat, the first control valve disc moves upward to separate the engine water inlet and the second liquid space, and the second control valve disc moves downward to separate the first liquid space and the second liquid space, so that the first thermostat and the second thermostat cooperate to control the internal waterway according to different temperature states, and the engine is kept at a suitable operating temperature.

[0016] Preferably, the second upper cover further comprises an oil cooler interface and a warm air return interface, and the oil cooler interface and the warm air return interface communicate with the second liquid space, so that the oil cooler and the warm air cooler are cooled.

[0017] Preferably, the average diameter of the third circulation channel is larger than that of the first circulation channel, so that the number of the third circulation channel is greatly increased when the engine is overheated, thereby improving the heat dissipation effect.

[0018] Preferably, the bottom cover is made of aluminum or plastic material, and the first upper cover and the second upper cover are made of plastic material, so that the bottom cover is made of aluminum material, and the first upper cover and the second upper cover are made of plastic material, which not only ensures the heat dissipation effect of the temperature regulator, but also reduces the overall weight, and if the bottom cover, the first upper cover and the second upper cover are made of plastic material, the overall weight is greatly reduced.

[0019] Preferably, the communication channel comprises a flow acceleration section, and the diameter of the flow acceleration section gradually converges along the flow direction of the cooling liquid, so that the flow rate in the communication channel is improved, which not only increases the convergence speed of the multiple pipe openings in the first liquid space, but also improves the overall circulation speed.

[0020] Preferably, the communication passage is provided with a flow controller, the input end of the flow controller is connected with the output end of the flow accelerating section, the flow controller comprises a mounting shell and a flow adjusting block slidingly arranged in the mounting shell, the flow adjusting block is arranged towards the flow accelerating section, a liquid passing gap is formed between the flow adjusting block and the mounting shell and communicates the flow accelerating section and the second liquid inlet space, and the liquid passing gap is increased with the increase of the flow.

[0021] Compared with the prior art, the utility model has the advantages and beneficial effects that:

[0022] Through cooperation of the bottom cover, the first upper cover and the second upper cover, the first liquid inlet space is arranged in the first upper cover, the first thermostat is arranged in the first liquid inlet space, the EGR cooler backwater interface, the cylinder cover backwater interface and the engine water outlet interface that communicate the first liquid inlet space are arranged on the first upper cover, the liquid inlet is formed on the bottom cover and communicates the first liquid inlet space, the first thermostat cuts off or communicates the liquid inlet and the first liquid inlet space with the temperature change, the second liquid inlet space is arranged in the second upper cover, the second thermostat is arranged in the second upper cover, the engine water inlet interface and the water pump water inlet interface that communicate the second liquid inlet space are formed on the second upper cover, the communication passage that communicates the first liquid inlet space and the second liquid inlet space is formed on the bottom cover, the first control valve piece and the second control valve piece are arranged in the second thermostat, the first control valve piece cuts off or communicates the engine water inlet interface and the second liquid inlet space with the temperature change, the second control valve piece cuts off or communicates the first liquid inlet space and the second liquid inlet space with the temperature change, the waterway is controlled according to the temperature change by cooperation of the first thermostat and the second thermostat, the EGR cooler, the cylinder cover and the engine are adjusted and controlled, the structure is simple, the volume is small, and the convenience in installation and use is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the overall structure schematic diagram of the utility model;

[0024] Figure 2 It is the overall structure top view of the utility model;

[0025] Figure 3 It is the overall structure bottom structure schematic diagram of the utility model;

[0026] Figure 4 It is the first upper cover internal structure schematic diagram of the utility model;

[0027] Figure 5 It is the structure schematic view of cold start state of the utility model;

[0028] Figure 6 It is the structure schematic view of normal operation state of the utility model;

[0029] Figure 7 It is the structure schematic view of high temperature state of the utility model;

[0030] Figure 8 It is the structure schematic view of flow acceleration section of the utility model;

[0031] Figure 9 It is the structure schematic view of flow acceleration section and flow controller cooperation of the utility model;

[0032] In the figure: 1, bottom cover;2, first upper cover;3, second upper cover;4, first liquid inlet space;5, first thermostat;6, EGR cooler backwater interface;7, cylinder head backwater interface;8, engine water outlet interface;9, liquid inlet;10, second liquid inlet space;11, second thermostat;12, engine water inlet interface;13, water pump water inlet interface;14, communication channel;15, first control valve piece;16, second control valve piece;17, first circulation channel;18, second circulation channel;19, third circulation channel;20, oil cooler interface;21, warm air backwater interface;22, fixed support;23, sealing groove;24, sealing ring;25, flow acceleration section;26, flow controller;27, installation shell;28, flow adjusting block;29, liquid gap;30, compression spring; DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] It should be understood that although the terms upper, middle, lower, top end, one end, etc. appear in the present text to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for the purpose of understanding, and are not used to define any directional or sequential limitation.

[0035] Figures 1-7 As shown, an integrated electronic thermostat, characterized by comprising a bottom cover 1, and a first upper cover 2 and a second upper cover 3 arranged on the bottom cover 1.

[0036] Specifically, the first upper cover 2 forms a first liquid inlet space 4, the first liquid inlet space 4 is provided with a first thermostat 5, the first upper cover 2 is formed with an EGR cooler return water interface 6, a cylinder head return water interface 7 and an engine water outlet interface 8 which communicate with the first liquid inlet space 4, and the bottom cover 1 is formed with a liquid inlet 9 which communicates with the first liquid inlet space 4, the first thermostat 5 separates or communicates the liquid inlet 9 and the first liquid inlet space 4 according to the temperature change, and the moving end of the first thermostat 5 moves up and down according to the temperature change in the first liquid inlet space 4 to separate or communicate the liquid inlet 9 and the first liquid inlet space 4.

[0037] The second upper cover 3 forms a second liquid inlet space 10, the second upper cover 3 is provided with a second thermostat 11, the second upper cover 3 is formed with an engine water inlet interface 12 and a water pump water inlet interface 13 which communicate with the second liquid inlet space 10, and the bottom cover 1 is formed with a connecting channel 14 which communicates with the first liquid inlet space 4 and the second liquid inlet space 10, the second thermostat 11 has a first control valve piece 15 and a second control valve piece 16, the first control valve piece 15 separates or communicates the engine water inlet interface 12 and the second liquid inlet space 10 according to the temperature change, and the second control valve piece 16 separates or communicates the first liquid inlet space 4 and the second liquid inlet space 10 according to the temperature change,

[0038] Further, the thermostat has a cold start state, a normal running state and a high temperature state, when the thermostat is in the cold start state, the cooling liquid enters the first liquid inlet space 4 through the cylinder head return water interface 7, then enters the second liquid inlet space 10 through the connecting channel, and is discharged from the water pump water inlet interface 13, so as to form a first circulation channel 17.

[0039] When the thermostat is in the normal running state, the cooling liquid enters the first liquid inlet space 4 through the EGR cooler return water interface 6, the cylinder head return water interface 7 and the liquid inlet 9, part of the cooling liquid enters the second liquid inlet space 10 through the connecting channel and is discharged through the water pump water inlet interface 13, and the other part of the cooling liquid enters the engine water inlet interface 12 through the engine water outlet interface 8, then enters the second liquid inlet space 10 through the engine water inlet interface 12 and is discharged through the water pump water inlet interface 13, so as to form a second circulation channel 18.

[0040] When the thermostat is in the high temperature state, the cooling liquid enters the first liquid inlet space 4 through the EGR cooler return water interface 6, the cylinder head return water interface 7 and the liquid inlet 9, all the cooling liquid enters the engine water inlet interface 12 through the engine water outlet interface 8, then enters the second liquid inlet space 10 through the engine water inlet interface 12 and is discharged through the water pump water inlet interface 13, so as to form a third circulation channel 19.

[0041] By cooperating the bottom cover 1 with the first upper cover 2 and the second upper cover 3, the first liquid inlet space 4 is arranged in the first upper cover 2, the first thermostat 5 is arranged in the first liquid inlet space 4, the EGR cooler backwater interface 6, the cylinder cover backwater interface 7 and the engine water outlet interface 8 communicating with the first liquid inlet space 4 are arranged on the first upper cover 2, the liquid inlet 9 communicating with the first liquid inlet space 4 is formed on the bottom cover 1, the first thermostat 5 separates or communicates the liquid inlet 9 and the first liquid inlet space 4 according to temperature change, the second liquid inlet space 10 is arranged in the second upper cover 3, the second thermostat 11 is arranged in the second upper cover 3, the engine water inlet interface 12 and the water pump water inlet interface 13 communicating with the second liquid inlet space are formed on the second upper cover 3, the communication channel 14 communicating with the first liquid inlet space 4 and the second liquid inlet space 10 is formed on the bottom cover 1, the first control valve piece 15 of the second thermostat 11 separates or communicates the engine water inlet interface 12 and the second liquid inlet space 10 according to temperature change, the second control valve piece 16 separates or communicates the first liquid inlet space 4 and the second liquid inlet space 10 according to temperature change, the water path is controlled according to the temperature change in the thermostat by cooperation of the first thermostat 5 and the second thermostat 11, so as to realize temperature regulation and control of the EGR cooler, the cylinder cover and the engine, and the structure is simple, the volume is small, and the convenience in installation and use is improved.

[0042] As preferred, the bottom cover 1 is made of aluminum or plastic material, and the first upper cover 2 and the second upper cover 3 are made of plastic material, if the bottom cover 1 is made of aluminum material, the first upper cover 2 and the second upper cover 3 are made of plastic material, which not only ensures the heat dissipation effect of the thermostat, but also reduces the overall weight, if the bottom cover 1, the first upper cover 2 and the second upper cover 3 are made of plastic material at the same time, the overall weight is greatly reduced.

[0043] As preferred, the EGR cooler plays a key role in the exhaust gas recirculation system, the main purpose is to reduce the temperature of the exhaust gas, so as to reduce the temperature of the mixed gas entering the combustion chamber, and then reduce the temperature in the combustion chamber, and reduce the content of nitrogen oxides in the exhaust gas, the EGR cooler backwater interface 6 is arranged on the first upper cover 2, which optimizes the feedback of the EGR cooler backflow liquid of the thermostat, and improves the multifunctionality of the thermostat.

[0044] As shown in Figures 1-7 Further explanation of the change of the water path in the thermostat, when the thermostat is in the cold start state, the first thermostat 5 separates the liquid inlet 9 and the first liquid inlet space 4, the first control valve piece 15 separates the engine water inlet interface 12 and the second liquid inlet space 10, and the second control valve piece 16 communicates the second liquid inlet space 10 and the communication channel 14.

[0045] When the vehicle is cold started, the temperature in the engine is not high, the temperature of the cooling liquid entering the thermostat is not high, at this time the first thermostat 5 blocks the inlet 9 and the first inlet space 4, the first control valve 15 blocks the engine water inlet 12 and the second inlet space 10, and the second control valve 16 connects the second inlet space 10 and the communication channel 14, the cooling liquid enters from the cylinder head water return interface 7, and directly enters the second inlet space 10 through the communication channel 14, and then is discharged through the water pump water inlet 13, realizing the circulation of the water circuit, at this time the water circuit path is short, the thermostat is small circulation, and the engine temperature is raised to the optimum temperature in the shortest time.

[0046] Further, when the thermostat is in normal operation, the first thermostat 5 connects the inlet 9 and the first inlet space 4, the first control valve 15 connects the engine water inlet 12 and the second inlet space 10, and the second control valve 16 connects the second inlet space 10 and the communication channel 14, the cooling liquid enters the first inlet space 4 from the inlet 9 below the bottom cover 1, the cooling liquid of the cylinder head water return interface 7 and the EGR cooler water return interface 6 enters the first inlet space 4, a part of the cooling liquid enters the radiator for heat dissipation through the engine water outlet 8, and then enters the second inlet space 10 through the engine water inlet 12 after heat dissipation, another part of the cooling liquid directly enters the second inlet space 10 through the communication channel 14, and finally is discharged through the water pump water inlet 13 to circulate the water circuit, at this time part of the water circuit path is short, and part of the water circuit path is long, so that the thermostat is simultaneously small and large circulation, so that the temperature of the cylinder head, the engine and the EGR cooler is maintained at a suitable temperature.

[0047] In addition, when the thermostat is in a high temperature state, the first thermostat 5 connects the inlet 9 and the first inlet space 4, the first control valve 15 connects the engine water inlet 12 and the second inlet space 10, and the second control valve 16 blocks the second inlet space 10 and the communication channel 14, the cooling liquid enters the first inlet space 4 from the inlet 9 below the bottom cover 1, the cooling liquid of the cylinder head water return interface 7 and the EGR cooler water return interface 6 enters the first inlet space 4, and all the water enters the second inlet space 10 through the engine water inlet 12, and finally is discharged through the water pump water inlet 13, so that the whole water circuit path is increased, so that the internal water circuit of the thermostat only circulates, thereby rapidly cooling the engine, the engine and the EGR cooler.

[0048] As preferred, the second upper cover 3 further comprises an oil cooler interface 20, and the oil cooler interface 20 communicates with the second inlet space 10, thereby realizing temperature regulation of the oil cooler and improving the functionality of the thermostat.

[0049] Preferably, the second upper cover 3 also has a warm air return water interface 21, which is connected to the second liquid inlet space 10, thereby realizing the temperature adjustment of the heater and further improving the functionality of the thermostat.

[0050] In some other embodiments, the average diameter of the third circulation channel 19 is larger than that of the first circulation channel 17, which significantly increases the number of channels in case of engine overheating, thereby improving the heat dissipation effect.

[0051] like Figures 1-7 As shown, further explanation of the first thermostat 5 and the second thermostat 11: the first thermostat 5 is an inverted mechanical thermostat and the second thermostat 11 is an upright electronic thermostat. The principle of both mechanical and electronic thermostats is the high-temperature expansion of the wax pack, which controls the up and down sliding of the valve. This is existing technology and will not be elaborated further.

[0052] Specifically, the main body of the first thermostat 5 is fixed inside the first liquid inlet space 4. The actuating end of the first thermostat 5 is located at the bottom of the first thermostat 5. The actuating end of the first thermostat 5 moves downward and abuts against the liquid inlet 9 to block the liquid inlet 9, thereby controlling the liquid inlet 9 according to the internal temperature.

[0053] The first upper cover 2 has a fixed bracket 22, one end of the spring on the first thermostat 5 abuts against the fixed bracket 22, and the fixed bracket 22 is integrally formed with the first upper cover 2 and has several water passage holes.

[0054] Furthermore, the second thermostat 11 is an upright electronic thermostat. The first control valve 15 moves upward to isolate the engine water inlet 12 and the second inlet space 10, and the second control valve 16 moves downward to isolate the first inlet space 4 and the second inlet space 10. The second thermostat 11 has a first position, a second position, and a third position. In the first position, the first control valve 15 abuts upward against the second upper cover 3 to isolate the engine water inlet 12 and the second inlet space 10, and the second control valve 16 moves away from the connecting channel to connect the first inlet space 4 and the second inlet space 10. In the second position, a certain distance is formed between the first control valve 15 and the second upper cover 3. The water passage gap, the second control valve plate 16 and the connecting channel form a certain water passage connection, thereby simultaneously connecting the engine water inlet 12 and the second liquid inlet space 10, as well as the first liquid inlet space 4 and the second liquid inlet space 10. In the second position, the first control valve plate 15 and the second upper cover 3 form a water passage, and the second control valve plate 16 abuts against the bottom of the second upper cover 3 to connect the engine water inlet 12 and the second liquid inlet space 10, and isolate the first liquid inlet space 4 and the second liquid inlet space 10. Thus, by using the cooperation of the first thermostat 5 and the second thermostat 11, the internal water circuit changes can be controlled according to different temperature conditions to keep the engine and other components at a suitable operating temperature.

[0055] Wherein, the temperature in the second liquid inlet space 10 is minimum when the second thermostat 11 is in the first position, and the second position is greater than the first position, and the third position is greater than the second position.

[0056] As shown in Figures 1-7 Further explanation about the cooperation of the first upper cover 2 and the second upper cover 3 with the bottom cover 1, a sealing groove 23 is formed on the first upper cover 2 and the second upper cover 3, and a sealing ring 24 is arranged in the sealing groove 23, the sealing ring 24 abuts against the bottom cover 1, and the cooperation of the sealing groove 23 and the sealing ring 24 improves the sealing between the first upper cover 2 and the second upper cover 3 and the bottom cover 1.

[0057] As shown in Figures 8-9 In some other embodiments, a flow acceleration section 25 is arranged in the communication channel 14, and the caliber of the flow acceleration section 25 is gradually contracted along the flow direction of the cooling liquid, which improves the flow rate in the communication channel 14, increases the convergence speed of the multiple pipe mouths in the first liquid inlet space 4, and improves the overall circulation speed.

[0058] Specifically, a flow controller 26 is arranged in the communication channel 14, the input end of the flow controller 26 is connected with the output end of the flow acceleration section 25, the flow controller 26 includes a mounting shell 27 and a flow adjusting block 28 which is slidably arranged in the mounting shell 27, the flow adjusting block 28 is arranged towards the flow acceleration section 25, the flow adjusting block 28 and the mounting shell 27 form a liquid passing gap 29 which connects the flow acceleration section 25 and the second liquid inlet space 10, and the liquid passing gap 29 becomes larger with the increase of the flow.

[0059] In the initial state, the flow adjusting block 28 and the mounting shell 27 form the liquid passing gap 29 which connects the flow acceleration section 25 and the second liquid inlet space 10, which further accelerates the cooling liquid, but when the internal flow is too large, the flow adjusting block 28 moves away from the input end of the mounting shell 27 to increase the liquid passing gap 29, thereby reducing the flow rate and keeping the internal flow within a stable limit.

[0060] Further, a compression spring 30 is arranged in the mounting shell 27, one end of the compression spring 30 abuts against the flow adjusting block 28, the other end abuts against the mounting shell 27, and the flow adjusting block 28 is arranged towards the output end of the flow acceleration section 25, if the flow is too large, the flow adjusting block 28 will compress the compression spring 30 to increase the liquid passing gap 29, thereby the flow rate, to ensure the stability of the internal flow.

[0061] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and a modification without creative contribution can be made to the embodiment according to needs by a person skilled in the art after reading the specification, but as long as the modification is within the scope of the claims of the utility model, the utility model is protected by the patent law.

Claims

1. An integrated electronic thermostat, characterized by, The temperature regulator comprises a bottom cover (1), a first upper cover (2) and a second upper cover (3) arranged on the bottom cover (1); The first upper cover (2) is provided with a first liquid inlet space (4) formed therein, a first thermostat (5) arranged in the first liquid inlet space (4), an EGR cooler return water interface (6), a cylinder head return water interface (7) and an engine water outlet interface (8) formed on the first upper cover (2), and the bottom cover (1) is provided with a liquid inlet (9) formed therein and communicating with the first liquid inlet space (4), and the first thermostat (5) is arranged to cut off or communicate the liquid inlet (9) with the first liquid inlet space (4) according to temperature change; The second upper cover (3) is provided with a second liquid inlet space (10) formed therein, a second thermostat (11) arranged in the second upper cover (3), an engine water inlet interface (12) and a water pump water inlet interface (13) formed on the second upper cover (3), and the bottom cover (1) is provided with a connecting channel (14) formed therein and communicating with the first liquid inlet space (4) and the second liquid inlet space (10), and the second thermostat (11) is provided with a first control valve piece (15) and a second control valve piece (16), the first control valve piece (15) is arranged to cut off or communicate the engine water inlet interface (12) with the second liquid inlet space (10) according to temperature change, and the second control valve piece (16) is arranged to cut off or communicate the first liquid inlet space (4) and the second liquid inlet space (10) according to temperature change; The temperature regulator has a cold start state, a normal operation state and a high temperature state, when the temperature regulator is in the cold start state, the cooling liquid enters the first liquid inlet space (4) through the cylinder head return water interface (7), then enters the second liquid inlet space (10) through the connecting channel, and is discharged from the water pump water inlet interface (13) to form a first circulation channel (17); When the temperature regulator is in the normal operation state, the cooling liquid enters the first liquid inlet space (4) through the EGR cooler return water interface (6), the cylinder head return water interface (7) and the liquid inlet (9), part of the cooling liquid enters the second liquid inlet space (10) through the connecting channel and is discharged through the water pump water inlet interface (13), and the other part of the cooling liquid enters the engine water inlet interface (12) through the engine water outlet interface (8), then enters the second liquid inlet space (10) through the engine water inlet interface (12) and is discharged through the water pump water inlet interface (13) to form a second circulation channel (18); When the temperature regulator is in the high temperature state, the cooling liquid enters the first liquid inlet space (4) through the EGR cooler return water interface (6), the cylinder head return water interface (7) and the liquid inlet (9), all of the cooling liquid enters the engine water inlet interface (12) through the engine water outlet interface (8), then enters the second liquid inlet space (10) through the engine water inlet interface (12) and is discharged through the water pump water inlet interface (13) to form a third circulation channel (19).

2. An integrated electronic thermostat according to claim 1, characterized in that, When the temperature regulator is in the cold start state, the first thermostat (5) blocks the inlet (9) and the first control valve (15) blocks the engine water inlet (12) and the second control valve (16) connects the second inlet space (10) and the communication channel (14).

3. An integrated electronic thermostat according to claim 1, wherein, When the temperature regulator is in the normal operation state, the first thermostat (5) connects the inlet (9) and the first control valve (15) connects the engine water inlet (12) and the second control valve (16) connects the second inlet space (10) and the communication channel (14).

4. An integrated electronic thermostat according to claim 1, wherein, When the temperature regulator is in the high temperature state, the first thermostat (5) connects the inlet (9) and the first control valve (15) connects the engine water inlet (12) and the second control valve (16) blocks the second inlet space (10) and the communication channel (14).

5. An integrated electronic thermostat according to claim 1, wherein, The first thermostat (5) is an inverted mechanical thermostat, the moving end of the first thermostat (5) moves downward to shield the inlet (9), and the second thermostat (11) is a normal electronic thermostat, the first control valve (15) moves upward to block the engine water inlet (12) and the second inlet space (10), and the second control valve (16) moves downward to block the first inlet space (4) and the second inlet space (10).

6. An integrated electronic thermostat according to claim 1, wherein, The second upper cover (3) further comprises an oil cooler interface (20) and a warm air return interface (21), and the oil cooler interface (20) and the warm air return interface (21) are connected to the second inlet space (10).

7. An integrated electronic thermostat according to claim 1, wherein, The average diameter of the third circulation channel (19) is larger than that of the first circulation channel (17).

8. An integrated electronic thermostat according to claim 1, wherein, The bottom cover (1) is made of aluminum or plastic, and the first upper cover (2) and the second upper cover (3) are made of plastic.

9. An integrated electronic thermostat according to claim 1, wherein, The communication channel (14) comprises a flow acceleration section (25), and the diameter of the flow acceleration section (25) gradually converges along the flow direction of the cooling liquid.

10. An integrated electronic thermostat according to claim 9, wherein, The communication channel (14) is provided with a flow controller (26), the input end of the flow controller (26) is connected to the output end of the flow acceleration section (25), the flow controller (26) comprises a mounting shell (27) and a flow adjusting block (28) slidingly arranged in the mounting shell (27), the flow adjusting block (28) is arranged towards the flow acceleration section (25), a liquid passing gap (29) is formed between the flow adjusting block (28) and the mounting shell (27) and connects the flow acceleration section (25) and the second inlet space (10), and the liquid passing gap (29) becomes larger with the increase of the flow.

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