Cooling system suitable for low-temperature environment

Abstract

The utility model belongs to the field of vehicle cooling systems, and discloses a cooling system suitable for a low-temperature environment, which comprises a radiator (1), an expansion water tank (3), a waterway electromagnetic valve (8), an engine (9), a gearbox hydraulic oil exchanger (10), a fan and fan transfer case hydraulic oil exchanger (11), a heating loop and a warm air loop, a water outlet of the engine (9) is connected with the radiator (1), the radiator (1) is connected with the fan and the fan transfer case hydraulic oil exchanger (11), and the fan and the fan transfer case hydraulic oil exchanger (11) are connected with an inlet of the gearbox hydraulic oil exchanger (10). According to the utility model, the heating performance of the armored vehicle is obviously improved, the functional pipeline of the water system is greatly simplified, the integration level of the system is improved, and the quick response capability of the vehicle in a special environment can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of vehicle cooling systems, and in particular relates to a cooling system suitable for low-temperature environments. Background Art

[0002] As the performance of armored vehicle powertrains continues to improve, hybrid and pure electric systems are increasingly dominant, and system functionality is gradually increasing and diversifying. As a crucial auxiliary system to the vehicle powertrain, the cooling system's principles are becoming increasingly complex. The cooling system's equilibrium temperature distribution exhibits a distinct gradient, increasing piping complexity. In high-altitude, cold regions, vehicle cooling systems must not only dissipate heat but also provide heating. System integration must also be increasingly high. Otherwise, piping systems with varying temperature gradients would take up significant space in the overall piping layout. Utility Model Content

[0003] The technical problem to be solved by the utility model is that vehicles have poor adaptability in extremely cold weather environments.

[0004] In order to solve the above technical problems, the specific technical solutions of the present utility model are as follows:

[0005] A cooling system suitable for low-temperature environments, comprising a radiator 1, an expansion tank 3, a water circuit solenoid valve 8, an engine 9, a gearbox hydraulic oil exchanger 10, a fan and a fan transfer case hydraulic oil exchanger 11, a heating circuit, and a warm air circuit;

[0006] The water outlet of the engine 9 is connected to the radiator 1, the radiator 1 is connected to the fan and the fan transfer case hydraulic oil exchanger 11, the fan and the fan transfer case hydraulic oil exchanger 11 are connected to the inlet of the transmission hydraulic oil exchanger 10; the inlet of the transmission hydraulic oil exchanger 10 is connected to the water outlet of the engine through a third pipeline; a water circuit solenoid valve 8 is provided on the third pipeline;

[0007] The outlet of the gearbox hydraulic oil exchanger 10 is connected to the water return port of the engine 9 via a first pipeline, the first pipeline is connected to the expansion water tank 3, and the expansion water tank 3 is connected to the radiator 1 via a second pipeline;

[0008] The heating circuit is connected to the small circulation of the engine 9; the warm air circuit is connected to the small circulation of the engine 9.

[0009] Furthermore, the heating circuit includes an electrically controlled reversing valve 4 and a heater 7 , the small circulation outlet of the engine 9 is connected to the electrically controlled reversing valve 4 , the electrically controlled reversing valve 4 is connected to the heater 7 , and the heater 7 is connected to the water return port of the engine 9 .

[0010] Furthermore, the warm air circuit includes an electronically controlled reversing valve 4, a passenger heater 5, and a driver heater 6. The small circulation outlet of the engine 9 is connected to the electronically controlled reversing valve 4, the electronically controlled reversing valve 4 is connected to the passenger heater 5, the passenger heater 5 is connected to the driver heater 6, and the driver heater 6 is connected to the return water port of the engine 9.

[0011] When the power system is in cooling demand, the engine 9 is started, and the electronically controlled reversing valve 4 and the water circuit solenoid valve 8 are in a closed state.

[0012] Among them, when the cooling water temperature is lower than 0°C, the transmission hydraulic oil exchanger 10 needs to be heated. At this time, the electronically controlled reversing valve 4 is closed, the water circuit solenoid valve 8 is opened, and the engine 9 is started.

[0013] When the cooling water temperature is lower than -20°C, the engine 9 needs to be heated, and at this time the electronically controlled reversing valve 4 and the heater 7 are opened.

[0014] When the vehicle occupants need heating in winter, the cooling water of the engine 9 provides the heat source; the electronically controlled reversing valve 4, the passenger heater 5, and the driver heater 6 are opened, and the engine 9 is started.

[0015] The utility model has the following advantages: the heating performance of the armored vehicle is significantly improved, the functional pipelines of the water system are greatly simplified, the integration of the system is improved, and the rapid response capability of the vehicle in special environments can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the cooling system structure of the utility model suitable for low-temperature environments;

[0017] Figure 2 This is a schematic diagram of the utility model under the first working condition;

[0018] Figure 3 This is a schematic diagram of the utility model under the second working condition;

[0019] Figure 4 This is a schematic diagram of the utility model under the third working condition;

[0020] Figure 5 This is a schematic diagram of the utility model under the fourth working condition. DETAILED DESCRIPTION

[0021] In order to better understand the purpose, structure and function of the present invention, the present invention is described in further detail below with reference to the accompanying drawings.

[0022] like Figure 1As shown, the cooling system of the present invention is suitable for low-temperature environments, including a radiator 1, a mixed flow fan 2, an expansion tank 3, a water circuit solenoid valve 8, an engine 9, a gearbox hydraulic oil exchanger 10, a fan and transfer case hydraulic oil exchanger 11, a heating circuit, and a warm air circuit.

[0023] The water outlet of the engine 9 is connected to the radiator 1, the radiator 1 is connected to the fan and the fan transfer case hydraulic oil exchanger 11, the fan and the fan transfer case hydraulic oil exchanger 11 are connected to the transmission hydraulic oil exchanger 10, and the transmission hydraulic oil exchanger 10 is connected to the return water port of the engine 9 through a first pipeline; the first pipeline is connected to the expansion water tank 3, the expansion water tank 3 is connected to the radiator 1 through a second pipeline, and a mixed flow fan 2 is provided next to the second pipeline; the heating circuit is connected to the small circulation of the engine 9; the warm air circuit is connected to the small circulation of the engine 9;

[0024] Furthermore, the heating circuit includes an electrically controlled reversing valve 4 and a heater 7 . The small circulation outlet of the engine 9 is connected to the electrically controlled reversing valve 4 , the electrically controlled reversing valve 4 is connected to the heater 7 , and the heater 7 is connected to the water return port of the engine 9 .

[0025] Furthermore, the warm air circuit includes an electrically controlled reversing valve 4, a passenger heater 5, and a driver heater 6. The small circulation outlet of the engine 9 is connected to the electrically controlled reversing valve 4, the electrically controlled reversing valve 4 is connected to the passenger heater 5, the passenger heater 5 is connected to the driver heater 6, and the driver heater 6 is connected to the return water port of the engine 9.

[0026] The cooling system of this embodiment has four coolant flow patterns. The first is that the engine 9 outlet is connected in series with the radiator 1, the fan and the fan transfer case hydraulic oil exchanger 11, and the transmission hydraulic oil exchanger 10, and finally to the engine 9 water return port. The second is that the engine 9 small circulation outlet is connected in series with the water circuit solenoid valve 8 and the transmission hydraulic oil exchanger 10, and finally to the engine 9 water return port. The third is that the engine 9 small circulation outlet is connected in series with the electronically controlled reversing valve 4 and the heater 7, and finally to the engine 9 water return port. The fourth is that the engine 9 small circulation outlet is connected in series with the electronically controlled reversing valve 4, the passenger heater 5, and the driver heater 6, and finally to the engine 9 water return port.

[0027] The cooling system of this embodiment is applicable to four working conditions.

[0028] The first working condition is Figure 2 As shown, when the power system is required to cool, the engine 9 is started, the electronically controlled reversing valve 4 and the water circuit solenoid valve 8 are closed, the heating circuit and the warm air circuit are closed, and the cooling water is only Figure 2 It operates within the cycle shown to dissipate heat from the power system.

[0029] The second working condition is Figure 3 As shown: When the cooling water temperature is lower than 0℃, the gearbox hydraulic oil exchanger 10 needs to be heated. At this time, the electronically controlled reversing valve 4 is closed, and the heating circuit and the warm air circuit are closed. The water circuit solenoid valve 8 is opened, and the engine 9 is started. At this time, the cooling water is Figure 3 The oil exchanger 10 of the transmission runs in the circulation loop shown.

[0030] The third working condition is Figure 4 As shown: When the cooling water temperature is lower than -20℃, the engine 9 needs to be heated. At this time, the electronically controlled reversing valve 4 and the heater 7 are opened. At this time, the cooling water Figure 4 The engine 9 is heated by running in the circulation loop shown.

[0031] The fourth working condition is Figure 5 As shown: When the vehicle occupants need heating in winter, the cooling water from the engine 9 provides the heat source; the electronically controlled reversing valve 4, the passenger heater 5, and the driver heater 6 are turned on, and the engine 9 is started. At this time, the cooling water Figure 5 The heat is supplied to the vehicle occupants by operating in the circuit shown.

[0032] Note: The second and third working conditions are mutually inverse logically and will not run at the same time.

[0033] The advantage of this embodiment is that it fully utilizes the heat of the engine 9 itself to provide a heat source for the passenger heater 5, the driver heater 6, and the transmission hydraulic oil exchanger 10, and fully utilizes the temperature ladder advantage to cool the power system, and can provide thermal energy for systems that require heat. It can effectively improve the vehicle's rapid response capability in relatively harsh plateau and cold areas.

[0034] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make several modifications and improvements without departing from the principles of the present invention, and these modifications and improvements should also be considered to fall within the scope of protection of the present invention.

Claims

1. A cooling system suitable for low temperature environment, characterized in that: It includes a radiator (1), an expansion tank (3), a water circuit solenoid valve (8), an engine (9), a gearbox hydraulic oil exchanger (10), a fan and a fan transfer case hydraulic oil exchanger (11), a heating circuit, and a warm air circuit; The water outlet of the engine (9) is connected to the radiator (1), the radiator (1) is connected to the fan and the fan transfer case hydraulic oil exchanger (11), the fan and the fan transfer case hydraulic oil exchanger (11) are connected to the inlet of the transmission hydraulic oil exchanger (10); the inlet of the transmission hydraulic oil exchanger (10) is connected to the water outlet of the engine through a third pipeline; a water circuit solenoid valve (8) is provided on the third pipeline; The outlet of the transmission hydraulic oil exchanger (10) is connected to the water return port of the engine (9) via a first pipeline, the first pipeline is connected to the expansion water tank (3), and the expansion water tank (3) is connected to the radiator (1) via a second pipeline; The heating circuit is connected to the engine (9) small circuit; the warm air circuit is connected to the engine (9) small circuit.

2. The cooling system suitable for low temperature environment according to claim 1, characterized in that: The heating circuit comprises an electrically controlled reversing valve (4) and a heater (7); the small circulation outlet of the engine (9) is connected to the electrically controlled reversing valve (4); the electrically controlled reversing valve (4) is connected to the heater (7); and the heater (7) is connected to the water return port of the engine (9).

3. The cooling system suitable for low temperature environment according to claim 2, characterized in that: The heating circuit comprises an electrically controlled reversing valve (4), a passenger heater (5), and a driver heater (6); the engine (9) small circulation outlet is connected to the electrically controlled reversing valve (4), the electrically controlled reversing valve (4) is connected to the passenger heater (5), the passenger heater (5) is connected to the driver heater (6), and the driver heater (6) is connected to the water return port of the engine (9).

4. The cooling system suitable for low temperature environment according to claim 3, characterized in that: When the power system is in cooling demand, the engine (9) is started, and the electronically controlled reversing valve (4) and the water circuit electromagnetic valve (8) are in a closed state.

5. The cooling system suitable for low temperature environment according to claim 3, characterized in that: When the cooling water temperature is lower than 0°C, the gearbox hydraulic oil exchanger (10) needs to be heated. At this time, the electronically controlled reversing valve (4) is closed, the water circuit solenoid valve (8) is opened, and the engine (9) is started.

6. The cooling system suitable for low temperature environment according to claim 3, characterized in that: When the cooling water temperature is lower than -20°C, the engine (9) needs to be heated, and the electronically controlled reversing valve (4) and the heater (7) are opened.

7. The cooling system suitable for low temperature environment according to claim 3, characterized in that: When vehicle passengers need heating in winter, the engine (9) cooling water provides a heat source; the electronically controlled reversing valve (4), the passenger heater (5), and the driver heater (6) are opened, and the engine (9) is started.

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