Cooling water pump assembly with adjusting function

Abstract

The cooling water pump assembly with the adjusting function comprises a pump body and a pump cover, a water inlet cavity, a water outlet cavity and a flow dividing cavity are formed in the pump body, the water outlet cavity corresponds to one water outlet, the water inlet cavity and the flow dividing cavity correspond to one water inlet respectively, the flow dividing cavity is connected with the water inlet cavity through a flow dividing hole, and the flow dividing hole is communicated with the water inlet cavity. An annular step surface is formed on the pump body corresponding to the communicated position of the shunting cavity and the shunting hole; a water outlet joint is mounted at the outer side end of the pump body corresponding to the shunting cavity through a bolt; a wax type thermostat is installed in the flow dividing cavity and comprises a valve seat, a support, a push rod, a main valve and an auxiliary valve, the valve seat is embedded in an annular groove in the connecting position of the water outlet connector and the pump body to be fixed, and the main valve is attached to or separated from the end face of the inner side of the valve seat to achieve opening and closing. The auxiliary valve is attached to or separated from the annular step face to be opened and closed. The main valve and the auxiliary valve are opposite in on-off state. According to the technical scheme, lightweight design and flexible and convenient installation of the water pump are achieved.

Description

Technical Field

[0001] This utility model relates to the cooling system of an automobile engine, specifically to an automobile water pump with a built-in thermostat that determines the different flow directions of coolant according to the actual operating conditions of the engine, thereby achieving different functions and realizing energy saving and consumption reduction. Background Technology

[0002] With the continuous development and upgrading of diesel engine technology, the requirements for diesel engines in terms of performance and installation structure are also constantly increasing. Newly developed and designed diesel engines tend to have a lightweight and compact design. Currently, most diesel engines have their cooling water pump and fan designed to be driven on the same drive shaft, driven by the crankshaft through a pulley at a fixed speed ratio. Traditional engine blocks have complex structures, large volumes, and are difficult to maintain. In winter, especially in northern regions, thermostats are installed on the engine to prevent the engine temperature from being too low when starting. However, due to structural or size limitations, some engines may not be able to install thermostats. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a cooling water pump assembly with adjustment function, so as to realize the lightweight design and flexible and convenient installation of the water pump assembly, thereby solving the problem of high energy consumption caused by low engine water temperature when starting the engine.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a cooling water pump assembly with adjustment function, including a pump body and a pump cover, wherein the pump body is provided with an inlet chamber, an outlet chamber and a diversion chamber, the outlet chamber corresponds to an outlet, and the inlet chamber and the diversion chamber each correspond to an inlet. The diversion chamber and the inlet chamber are connected by a diversion hole. The pump body forms an annular stepped surface at the position where the diversion chamber and the diversion hole connect. A water outlet connector is installed on the outer end of the pump body corresponding to the diversion chamber by bolts. A wax-type thermostat is installed in the diversion chamber, and the thermostat includes a valve seat. The system comprises a bracket, a push rod, a main valve, and a secondary valve. The valve seat is fixed by being embedded in an annular groove at the connection between the outlet connector and the pump body. The main valve is switched on and off by engaging or disengaging with the inner end face of the valve seat, and the secondary valve is switched on and off by engaging or disengaging with the annular stepped surface. The main valve and the secondary valve have opposite switching states. When the main valve is closed, the secondary valve is open, and the coolant in the diversion chamber can flow into the inlet chamber through the secondary valve and the diversion hole in sequence. When the main valve is open, the secondary valve is closed, and the coolant in the diversion chamber can be discharged outward through the main valve and the outlet connector in sequence.

[0005] In one embodiment, the pump body is provided with a first inlet corresponding to the inlet chamber, and the pump cover is provided with a second inlet corresponding to the diversion chamber and an outlet corresponding to the outlet chamber.

[0006] In one embodiment, the first inlet is used to connect to the cooling water tank, the outlet is used to connect to the engine cooling passage, the second inlet is used to connect to the engine cooling circuit, and the outlet connector is used to connect to the cooling water tank.

[0007] Furthermore, a water temperature sensor is installed on the pump body at the position corresponding to the flow divider chamber. The water temperature sensor is used to collect the real-time temperature value of the coolant to determine the engine's operating condition, and can also monitor and detect abnormal operation of the thermostat.

[0008] In one embodiment, the valve seat of the thermostat is surrounded by a rubber ring.

[0009] In one embodiment, a sealing gasket is installed between the water outlet connector and the pump body.

[0010] This invention features an external interface structure for the cooling water pump, with different inlet and outlet ports for connection to the engine. Simultaneously, it incorporates functional chambers within the pump body to allow for different coolant flow directions. Furthermore, it utilizes a built-in thermostat to achieve a lightweight design and flexible installation of the water pump assembly, thus addressing the problem of high energy consumption caused by excessively low engine coolant temperature during engine start-up. Moreover, by integrating the thermostat within the pump body, it solves the problem of some engines being unable to accommodate a thermostat due to structural limitations. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the external structure of the water pump in an embodiment of this utility model;

[0012] Figure 2 This is a schematic diagram of the internal structure of the water pump after the pump cover is removed in an embodiment of this utility model.

[0013] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure;

[0014] Figure 4 This is a longitudinal sectional view of the water pump in an embodiment of the present invention;

[0015] Figure 5 This is a schematic diagram of the thermostat and water temperature sensor in an embodiment of the present utility model;

[0016] The attached figures are labeled as follows:

[0017] 1. Pump body; 1a. First inlet; 1b. Outlet; 1c. Second inlet; 2. Water seal; 2a. Inlet chamber; 2b. Diverter chamber; 2c. Diverter orifice; 2e. Outlet chamber; 3. Shaft bearing; 4. Pulley; 5. Sealing gasket; 6. Pump cover; 7. Impeller; 8. Thermostat; 8a. Secondary valve; 8b. Main valve; 9. Outlet connector; 10. Water temperature sensor; 11. Bolts. Detailed Implementation

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0019] It should be noted in advance that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] like Figures 1 to 5As shown, a cooling water pump assembly with adjustable function includes a pump body 1, a pump cover 6, a shaft bearing 3, a water seal 2, an impeller 7, and a pulley 4. The pump body 1 has an inlet chamber 2a, an outlet chamber 2e, and a diversion chamber 2b. The pump body 1 has a first inlet 1a corresponding to the inlet chamber 2a, and the pump cover 6 has a second inlet 1c corresponding to the diversion chamber 2b and an outlet 1b corresponding to the outlet chamber 2e. The first inlet 1a connects to the cooling water tank, the outlet 1b connects to the engine cooling passage, and the second inlet 1c connects to the engine cooling circuit. The diversion chamber 2b is connected to the inlet chamber 2a via a diversion hole 2c. The pump body 1 forms an annular stepped surface at the position where the diversion chamber 2b connects to the diversion hole 2c. An outlet connector 9 is installed on the outer end of the pump body 1 corresponding to the diversion chamber 2b via bolts 11 to connect to the cooling water tank. A sealing gasket 5 is installed between the outlet connector 9 and the pump body 1. A water seal 2c is installed inside the diversion chamber 2b. A wax-type thermostat 8 is installed, which includes a valve seat, a bracket, a push rod, a main valve 8b, and a secondary valve 8a. The valve seat is fixed in an annular groove at the connection between the outlet connector 9 and the pump body 1. The periphery of the valve seat is wrapped with a rubber ring. The main valve 8b is opened and closed by contacting or separating from the inner end face of the valve seat, and the secondary valve 8a is opened and closed by contacting or separating from the annular stepped surface. The opening and closing states of the main valve 8b and the secondary valve 8a are opposite. When the main valve 8b is closed, the secondary valve 8a is open, and the coolant in the diversion chamber 2b can flow into the inlet chamber 2a through the secondary valve 8a and the diversion hole 2c in sequence. When the main valve 8b is open, the secondary valve 8a is closed, and the coolant in the diversion chamber 2b can be discharged outward through the main valve 8b and the outlet connector 9 in sequence. By changing the flow direction of the coolant, a large or small circulation of coolant is achieved to ensure that the engine operates within a suitable temperature range.

[0021] like Figure 2 , 3 As shown in Figure 5, a water temperature sensor 10 is installed on one side of the pump body 1, corresponding to the position inside the flow divider 2b. This water temperature sensor 10 is used to collect real-time water temperature values ​​to determine the engine's operating conditions, and can also monitor and determine abnormal operation of the thermostat 8. To reduce the impact of turbulence on the data acquisition accuracy of the water temperature sensor 10 caused by the coolant entering the flow divider 2b from the second inlet 1c, and to prevent the water flow from impacting the sensor probe, the sensor probe is arranged on the outside of the concave baffle of the thermostat 8.

[0022] The working process and principle of this embodiment are as follows: The water pump pulley 4 rotates at high speed driven by the engine belt, which in turn drives the main shaft of the shaft bearing 3 to rotate at high speed. When the main shaft rotates, it drives the impeller 7 to rotate synchronously. When the impeller 7 rotates at high speed, it draws the coolant into the inlet chamber 2a. Under the action of the blades of the impeller 7, the coolant enters the outlet chamber 2e with a certain kinetic energy, and then enters the engine block, cylinder head and other parts that need to be cooled through the outlet 1b. After the coolant achieves heat exchange inside the engine, it enters the distribution chamber 2b through the second inlet 1c. The thermostat 8 in the distribution chamber 2b controls the opening or closing of the main valve 8b and the auxiliary valve 8a according to the actual temperature of the coolant. When the temperature of the coolant reaches the set temperature of the thermostat 8, the main valve 8b of the thermostat 8 overcomes the spring. When the force moves in the direction of the movement, the main valve 8b separates from the inner end face of the valve seat, opening the flow channel of the main valve 8b. At the same time, the auxiliary valve 8a overcomes the spring force and adheres to the annular step surface, closing the flow channel of the auxiliary valve 8a. At this time, the coolant in the diversion chamber 2b enters the cooling water tank through the main valve 8b and the outlet connector 9 for cooling. The cooled coolant then enters the inlet chamber 2a from the first inlet 1a to participate in the next cycle. When the temperature of the coolant does not reach the set temperature of the thermostat 8, the main valve 8b adheres to the inner end face of the valve seat, closing the flow channel of the main valve 8b. At the same time, the bypass valve separates from the annular step surface, closing the flow channel of the auxiliary valve 8a. At this time, the coolant in the diversion chamber 2b flows into the inlet chamber 2a through the auxiliary valve 8a and the diversion hole 2c to participate in the next cycle.

[0023] In winter, especially in northern regions, the engine temperature is low for a period of time after the engine starts. At this time, the coolant flowing out of the cylinder block and cylinder head is at a low temperature and enters the water inlet chamber 2a through the second inlet 1c, the flow chamber 2b, the auxiliary valve 8a, and the flow hole 2c to participate in the circulation, thereby playing a role in saving energy and reducing consumption. When the engine temperature rises, the high temperature coolant enters the coolant tank through the second inlet 1c, the flow chamber 2b, the main valve 8b, and the outlet connector 9, and then enters the water inlet chamber 2a through the first inlet 1a to participate in the next circulation.

[0024] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

[0025] To facilitate understanding by those skilled in the art of the improvements of this utility model over the prior art, some of the drawings and descriptions of this utility model have been simplified, and for clarity, some other elements have been omitted from this application. Those skilled in the art should realize that these omitted elements may also constitute the content of this utility model.

Claims

1. A cooling water pump assembly with regulating function, comprising a pump body (1) and a pump cover (6), characterized in that: the pump body (1) is internally provided with an inlet water cavity (2a), an outlet water cavity (2e) and a shunt cavity (2b), the outlet water cavity (2e) corresponds to an outlet water port (1b), the inlet water cavity (2a) and the shunt cavity (2b) each correspond to an inlet water port, the shunt cavity (2b) and the inlet water cavity (2a) are connected through a shunt hole (2c), the pump body (1) forms an annular stepped surface at a position corresponding to the shunt cavity (2b) and the shunt hole (2c), and an outlet water connector (9) is installed on the outer side end of the pump body (1) corresponding to the shunt cavity (2b) through a bolt (11); a wax type thermostat (8) is installed in the shunt cavity (2b), the thermostat (8) comprises a valve seat, a bracket, a push rod, a main valve (8b) and a secondary valve (8a), the valve seat is embedded in an annular groove at the connection between the outlet water connector (9) and the pump body (1) for fixation, the main valve (8b) is switched on or off by abutting or separating with the inner side end surface of the valve seat, and the secondary valve (8a) is switched on or off by abutting or separating with the annular stepped surface; the opening and closing states of the main valve (8b) and the secondary valve (8a) are opposite, when the main valve (8b) is in the closed state, the secondary valve (8a) is in the open state, and the coolant in the shunt cavity (2b) can flow into the inlet water cavity (2a) through the secondary valve (8a) and the shunt hole (2c) in sequence, when the main valve (8b) is in the open state, the secondary valve (8a) is in the closed state, and the coolant in the shunt cavity (2b) can be discharged outward through the main valve (8b) and the outlet water connector (9) in sequence.

2. The cooling water pump assembly with a belt adjustment function according to claim 1, characterized in that: the pump body (1) is provided with a first inlet water port (1a) corresponding to the inlet water cavity (2a), the pump cover (6) is provided with a second inlet water port (1c) corresponding to the shunt cavity (2b) and an outlet water port (1b) corresponding to the outlet water cavity (2e).

3. The cooling water pump assembly with a belt adjustment function according to claim 2, characterized in that: the first inlet water port (1a) is used for connecting a cooling water tank, the outlet water port (1b) is used for connecting an engine cooling channel, the second inlet water port (1c) is used for connecting an engine cooling circuit, and the outlet water connector (9) is used for connecting the cooling water tank.

4. The cooling water pump assembly with adjustment function according to any one of claims 1 to 3, characterized in that: a water temperature sensor (10) is installed on the pump body (1) at a position corresponding to the shunt cavity (2b).

5. The cooling water pump assembly with adjustment function according to any one of claims 1 to 3, characterized in that: the valve seat of the thermostat (8) is wrapped with a rubber ring.

6. The cooling water pump assembly with adjustment function according to any one of claims 1 to 3, characterized in that: a sealing gasket (5) is installed between the outlet water connector (9) and the pump body (1).

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