KR20100052772A - Water pump for vehicle - Google Patents

Abstract

PURPOSE: A water pump for a vehicle preventing the overheating of an engine is provided to prevent the loss of rotor due to the inflow of cooling water. CONSTITUTION: A water pump for vehicle comprises a housing unit(200). The housing unit includes a circulation area(210) and an operation area(230). Cooling water is supplied to a cylinder block in the circulation area. The operation area separated independently from the circulation area. A driving part(220) is installed so that the cooling water flowing through the circulation area is pressurized in the operation area.

Description

Water Pump for Vehicle

The present invention relates to a water pump installed in a vehicle for supplying cooling water to a cylinder block, and to a vehicle water pump capable of dividing the interior of the water pump into separate areas and driving the water pump electrically.

In general, an automobile is provided with an engine cooling device for maintaining the engine at an appropriate temperature, and the cooling device serves to enable smooth engine operation by allowing the engine to cool slowly when the engine is cooled.

The engine cooling device includes a radiator, a cooling fan, a thermostat, a water pump, a driving belt, and the like, and the coolant is sucked from the radiator by a water pump, and the cylinder block, the intake manifold, the exhaust manifold, and the cylinder head The water jacket is circulated and returned to the radiator for cooling.

Looking at the cooling system of a typical vehicle with reference to the accompanying Figure 1 as follows.

Referring to FIG. 1, the vehicle water pump 100 is mounted at one side of the engine 101 and driven by the power of the engine 101 to circulate the coolant so that the engine 101 maintains an appropriate temperature. Make sure

The water pump 100 pumps the coolant by using the power of the engine 101, thereby circulating the coolant to the water jackets of the cylinder block 103 and the cylinder head 105, and then cools the circulated coolant back to the radiator 107. After circulating and performing a heat dissipation process, the water pump 100 is introduced again to repeat the circulation process.

The water pump 100 is provided with an impeller (not shown), and the cooling water is pumped out of the water pump 100 by the centrifugal force according to the rotation operation of the impeller.

The water pump 100 used as described above was used by sealing to prevent contact between the coolant flowing into the rotor and the rotor, but the performance of the sealing was lowered and the airtight state was lowered by various foreign substances. Coolant flowed into the rotor.

The inflow of the coolant caused the rotor to be burned out, so that the pumping of the coolant was unstable, resulting in overheating of the engine and failure of the water pump, which required urgent countermeasures.

An object of the present invention is to provide a water pump for a vehicle that uses electricity as a driving source, to fundamentally block the occurrence of leakage of cooling water flowing inside the water pump, and to provide a vehicle water pump that can prevent burnout of the rotor.

Another object of the present invention to provide a water pump for a vehicle, characterized in that for increasing the drive torque according to the water pump drive.

In order to achieve the above object, the vehicle water pump according to the present invention has a circulation region in which the cooling water is introduced and pressurized so that the cooling water is supplied to the cylinder block and the cooling is performed, and is independent of the circulation region. Characterized in that the housing is configured to include a drive region in which the drive unit is installed so that the coolant flowing through the circulation region is pressurized.

Cooling water flows through the circulation region of the housing part according to the present invention, and a partition wall is formed so that the cooling water does not flow into the driving region. The partition wall serves to divide the circulation region and the driving region and to prevent the coolant flowing through the circulation region from entering the driving region. In addition, the thickness of the partition wall preferably has a minimum thickness and is not particularly limited.

A drive unit for generating a driving force on the drive unit of the housing unit; The first magnet is coupled to the rotor shaft tip of the rotor and provided with magnetic bodies spaced at equal intervals in the circumferential direction.

The first magnet has a disc shape, and the magnetic body is configured such that permanent magnets having an N pole and an S pole are alternately installed.

The first magnet of the housing part according to the present invention is characterized by having a separation distance h1 spaced from the lower surface of the partition wall. The separation distance h1 is preferably spaced apart in order to minimize the surface heat generated in the first magnet that rotates simultaneously with the rotation of the rotor shaft, and is not particularly limited to the separation distance h1, but the first magnet is a high speed Therefore, it is preferable that the heat generated during rotation be spaced apart by a distance that is minimized.

       The circulation region of the housing part according to the present invention includes an inlet and an outlet formed to move the coolant; An impeller positioned on the inlet and increasing the pressure of the cooling water by a driving force provided from the driving unit; A second magnet is coupled to an end of the impeller shaft provided in the impeller and provided with magnetic bodies spaced at equal intervals in the circumferential direction.

The second magnet of the housing part according to the present invention has a separation distance h2 spaced apart from an upper surface of the partition wall.

The housing unit according to the present invention is characterized in that a Hall sensor (Hall Sensor) for detecting the operating state of the second magnet is provided.

According to another exemplary embodiment of a vehicle water pump according to the present invention, a circulation zone in which the coolant flows and is pressurized so that the coolant is supplied to the cylinder block and cooled is formed, and is independent of the circulation zone. A housing part including a driving area in which a driving part is installed is provided to increase a driving torque for pressurizing the coolant introduced through the circulation area.

The drive unit of the housing unit according to the present invention is provided with a disk-shaped first magnet which is coupled to the rotor shaft front end of the rotor for generating the driving force, the magnetic body being provided at equal intervals on the outer circumferential surface of the first bent portion with the end bent upwardly. It is done.

In the circulation region according to the present invention and the inlet and outlet formed so that the movement of the cooling water; An impeller positioned on the inlet and increasing the pressure of the cooling water by a driving force provided from the driving unit; A disk-shaped second magnet is provided on the inner circumferential surface of the second bent portion which is coupled to an end of the impeller shaft provided in the impeller and whose end is bent downward.

The first magnet according to the present invention is characterized in that it is located in a state accommodated inside the second magnet.

As described above, the vehicle water pump according to the present invention has no effect of cooling water flow into the drive region in which the rotor is installed, thereby preventing the burnout of the rotor and improving durability, thereby enabling long-term use.

In addition, the cooling water can be stably supplied to the cylinder block to prevent overheating of the engine and to increase the efficiency of the engine as much as possible. The water pump is operated by electric drive to efficiently supply the cooling water regardless of the operating state of the engine. It can be effective.

In addition, the driving torque of the water pump can be improved, so that the driving of the water pump can be performed with more powerful torque.

Hereinafter, with reference to the accompanying drawings an embodiment of a vehicle water pump according to the present invention with reference to the accompanying drawings.

2 is a view showing a vehicle water pump according to the present invention, Figure 3 is a view showing the first and second magnets provided in the vehicle water pump according to the present invention, Figure 4 is a vehicle for the vehicle according to the present invention FIG. 5 is a view illustrating a first magnet provided in a water pump, FIG. 5 is a diagram illustrating an operation state of a vehicle water pump according to the present invention, and FIG. 6 is a diagram illustrating another embodiment of a vehicle water pump according to the present invention. 7 is an enlarged view of the first and second magnets shown in FIG. 6, and FIG. 8 is an operation state diagram according to another embodiment of the vehicle water pump.

2 to 4, the vehicle water pump 1 according to the present invention includes a circulation region 210 in which the coolant is introduced and pressurized so that the coolant is supplied to the cylinder block and cooled. The housing part 200 is provided separately from the one circulation region 210 and includes a driving region 230 in which the driving unit 220 is installed to pressurize the coolant introduced through the circulation region 210. It features.

Cooling water flows in the circulation region of the housing part 200 according to the present invention, and the partition wall 202 is formed in the driving region 220 such that the cooling water does not flow.

The partition 202 serves to divide the circulation region 210 and the driving region 230 and to prevent the coolant flowing through the circulation region 210 from entering the driving region 230. do.

In addition, it is preferable that the thickness of the partition wall 202 has a minimum thickness, and the thickness is not particularly limited.

A rotor 222 in which driving force is generated in the driving unit 220 of the housing unit 200; The first magnet 226 is coupled to the rotor shaft distal end of the rotor 222 and provided with magnetic bodies 224 spaced at equal intervals in the circumferential direction.

The first magnet 226 has a disc shape, and the magnetic body 224 is configured such that permanent magnets having an N pole and an S pole are alternately installed.

The first magnet 226 of the housing portion 200 according to the present invention is characterized in that it has a separation distance h1 spaced from the bottom surface of the partition wall 202.

The separation distance h1 is preferably spaced apart in order to minimize the surface heating in the first magnet 226 is rotated at the same time as the rotor shaft rotation, but is not particularly limited to the distance of the separation distance h1, The first magnet 226 is preferably spaced apart by a distance that minimizes the heat generated when rotating at a high speed.

       The circulation region 210 of the housing part 200 according to the present invention includes an inlet 211 and an outlet 212 formed to move the coolant; An impeller 214 located on the inlet 211 and increasing the pressure of the cooling water by a driving force provided from the driving unit 220; The second magnet 218 is coupled to the end of the impeller shaft provided in the impeller 214 and provided with a magnetic material 216 spaced at equal intervals in the circumferential direction.

The second magnet 218 of the housing 200 according to the present invention is characterized in that it has a separation distance h2 spaced apart from the upper surface of the partition wall 202.

The housing 200 according to the present invention is characterized in that a Hall sensor (Hall Sensor) for detecting the operating state of the second magnet 218 is provided. The Hall sensor is an electronic device that is more sensitive than a transistor or magnetodiode that senses magnetism and is used to measure the intensity or distribution of magnetism.

A configuration according to another embodiment of the vehicle water pump according to the present invention is a configuration for increasing the drive torque, the circulation area 210 'through which the coolant is introduced and pressurized so that the coolant is supplied to the cylinder block to cool. And a driving region 230 ′ which is independent of the circulation region 210 ′ and provided with a driving unit 220 ′ so as to increase driving torque that pressurizes the coolant introduced through the circulation region 210 ′. It characterized in that the housing portion 200 'is configured to include a).

The drive part 220 'of the housing part 200' according to the present invention is coupled to the rotor shaft front end of the rotor 222 'that generates a driving force, and is formed on the outer circumferential surface of the first bent part 224' that is bent upward. It characterized in that the first magnet 228 ′ in the shape of a disk provided with magnetic bodies 226 ′ at equal intervals.

In the circulation region 210 'according to the present invention, the inlet 211 and the outlet 212 are formed to move the cooling water; An impeller 214 located on the inlet 211 and increasing the pressure of the cooling water by a driving force provided from the driving unit 220 '; The disk-shaped second magnet 219 coupled to the end of the impeller shaft 214 provided in the impeller 214 and the magnetic body 218 'are installed at equal intervals on the inner circumferential surface of the second bent portion 216' bent downwardly. ') Is provided.

Between the first magnet 228 'and the second magnet 219' according to the present invention, a partition wall 202 'for dividing the circulation region 210' and the driving region 230 'is provided. The partition wall 202 ′ is formed to match the shapes of the first and second magnets 228 ′ and 219 ′.

The first magnet 228 'according to the present invention is located in a state accommodated inside the second magnet 219'.

The operation state of the vehicle water pump according to the present invention configured as described above will be described with reference to the drawings.

2 to 5, an engine (not shown) is operated while a driver in a vehicle is turned on, and is supplied into a cylinder (not shown) provided in the engine. The piston reciprocates as fuel and combustion occur.

The temperature of the combustion gas generated during combustion inside the cylinder is a high temperature state having a temperature range of 2000 to 2500 ° C., and the entire cylinder block including the piston and the cylinder starts to overheat according to the continuous operation of the engine.

As the cylinder block is gradually overheated, the first and second magnets 226 and 218, which face each other via the partition wall 202, generate a pulling force between the magnetic bodies 224 and 216.

The magnetic field relationship between the first and second magnets will be described with reference to FIG. 4.

Referring to FIG. 4, in the magnetic material 224 disposed on the first magnet 226, the N pole and the S pole are alternately and repeatedly installed as shown in the drawing, and the first magnet 226 may be described. The second magnet 218 is positioned on the upper surface, and the magnetic body 216 having a different polarity at a position facing the magnetic body 224 disposed on the first magnet 226 on the circumferential surface of the second magnet 218. Is installed.

That is, when the magnetic material 224 installed in the first magnet 226 has a permanent magnet having the polarity of the N pole, the permanent magnet of the N pole is formed of the other magnetic material 216 installed in the second magnet 218. It is located opposite the S-pole.

In this state, the magnetic material 224 of the N pole and the magnetic material 216 of the S pole are attracted to each other as shown by arrows, and a plurality of magnetic materials 224 and 216 installed in the first and second magnets 226 and 218. Each is located in a state of strong attraction to each other.

In the above state, the control unit (not shown) transmits a control signal to the rotor 222 provided in the vehicle water pump 1 to cool the cylinder block, thereby rotating the rotor shaft provided in the rotor 222. Let's go.

As the rotor shaft according to the present invention is rotated at a high speed, the first magnet 226 installed on the rotor shaft is also rotated at a high speed, and the magnetic body 224 provided at the circumferential direction of the first magnet 226 is also formed. Rotation is made with one magnet 226.

While the first magnet 226 is rotated, the attraction force acting on each of the plurality of magnetic bodies 224 and 216 is released, but the first magnet 226 is caused by a eddy magnetic field generated therein when the first magnet 226 is rotated. ) And the second magnet 218 positioned through the partition wall 202 are simultaneously rotated in the rotation direction of the first magnet 226 so that the driving force generated in the rotor 222 is transmitted to the second magnet 218.

The upper end of the second magnet 218 provided in the circulation region 210 of the present invention is provided with an impeller 214 coaxially connected with the second magnet 218, the rotation of the second magnet 218 and At the same time the rotation of the impeller 214 is made at a high speed.

Preferably, a bearing (not shown) is installed on the impeller shaft on which the impeller 214 is installed to guide the rotation more stably when the impeller shaft is rotated.

Referring to FIG. 5, while the impeller 214 according to the present invention is rotated, the coolant flowing through the inlet 211 is moved along the structural shape of the vortex chamber and the pressure is increased to move through the outlet 212. do.

For example, when the cylinder block is heated to a high temperature, the coolant heated by the high temperature heat generated by the engine is moved to a radiator (not shown), and the coolant of the radiator is inlet of the water pump 1 ( 211) to be discharged through the outlet 212 and supplied to the cylinder block of the engine as described above, thereby cooling the heat of the overheated cylinder block, and repeatedly supplying the coolant moved through the radiator to the cylinder block. Supply will be made.

The water pump 1 according to the present invention is such that the above operation is not performed by the belt driving according to the engine operation, but by the electric drive of the rotor 222 provided in the driving region 230 of the water pump 1. do.

The first and second magnets 226 and 218 according to the present invention are installed at intervals spaced apart from the partition wall 202 by h1 and h2, respectively, during rotation, thereby minimizing heat generation when the rotation operation is performed at a high speed. Operation is achieved.

The rotor 222 is installed in the driving region 230 according to the present invention, and the coolant is not introduced into the driving region 230 by the partition wall 202 regardless of the flow of the cooling water. 222 is not introduced to the cooling water.

The second magnet 218 rotated in conjunction with the repetitive rotation operation or stop operation of the first magnet 226 may not rotate even when the first magnet 226 rotates at a high speed in some cases. The magnetic state of the second magnet 218 is detected by the hall sensor 204 and transmitted to the controller, and the controller calculates the magnetic force to control the operation of the second magnet 218. do.

In the water pump 1 according to the present invention, even when the centers of the first magnets 226 and the second magnets 218 do not coincide with each other, the rotation of the second magnets 218 can be made stable by a strong magnetic field. This ensures a smooth supply of coolant to the cylinder block.

An operating state according to another embodiment of a vehicle water pump according to another embodiment of the present invention will be described with reference to the drawings.

6 to 8, an engine (not shown) is operated while a driver in a vehicle is turned on, and is supplied into a cylinder (not shown) provided in the engine. The piston reciprocates as fuel and combustion occur.

The temperature of the combustion gas generated during combustion inside the cylinder is a high temperature state having a temperature range of 2000 to 2500 ° C. As the entire cylinder block including the piston and the cylinder is overheated according to continuous operation of the engine, the partition wall 202 ' In the first and second magnets 228 'and 219' positioned to face each other through), a pulling force is generated between the magnetic bodies 226 'and 218'.

In the magnetic body 226 'disposed in the first magnet 228' according to the present invention, the N pole and the S pole are alternately repeatedly installed on the outer circumferential surface of the first bent portion 224 ', and the above-described first magnet A magnetic body 218 'is also located on the second magnet 219' facing the 228 ', and the magnetic body 226' and the second magnet 219 'disposed on the first magnet 228'. The magnetic bodies 218 'provided in the are arranged to have different poles.

That is, when the permanent magnet having the polarity of the N pole is located in the magnetic body 226 ′ installed in the first magnet 228 ′, the permanent magnet of the N pole is formed of another magnetic material ( 218 ') opposite the S pole.

7, an embodiment of the magnetic material 218'224 'according to the present invention is located facing each other in a rectangular shape having a width W and a length H as shown in the enlarged view. In this state, the magnetic force of the N pole 226 ′ and the magnetic pole 218 ′ of the S pole are applied to each other, and a plurality of magnetic bodies installed in the first and second magnets 228 ′ and 219 ′ ( 226 ', 218') are each placed in a state of strong attraction to each other.

In the above state, the controller (not shown) transmits a control signal to the rotor 222 'provided in the vehicle water pump 1' to cool the cylinder block, thereby providing the rotor provided in the rotor 222 '. It will rotate the shaft.

As the rotor shaft according to the present invention is rotated at high speed, the first magnet 228 'installed on the rotor shaft is also rotated at high speed, and the magnetic body 226' installed on the first magnet 228 'is also the first magnet. A rotation is made with 228 '.

As the first magnet 228 'is rotated, the attraction force acting on each of the plurality of magnetic bodies 226' and 218 'is released, but the eddy magnetic field generated therein is rotated when the first magnet 228' is rotated. The second magnet 219 'positioned through the first magnet 228' and the partition 202 'is simultaneously rotated in the rotational direction of the first magnet 228' while driving force generated in the rotor 222 '. This is transmitted to the second magnet 219 '.

The magnetic bodies 226 ′ and 218 ′ according to the present invention are installed in a state in which the total area of the magnetic bodies formed by the width W and the height H is larger than the magnetic bodies 224 and 216 installed in the circumferential direction described above. As a result, the impeller 214 can be rotated with more powerful torque.

Therefore, the rotation of the impeller 214 is performed at the same time as the rotation of the second magnet 219 '.

Preferably, a bearing (not shown) is installed on the impeller shaft on which the impeller 214 is installed to guide the rotation more stably when the impeller shaft is rotated.

Referring to FIG. 8, while the impeller 214 according to the present invention is rotated, the coolant flowing through the inlet 211 is moved along the structural shape of the vortex chamber and the pressure is increased to move through the outlet 212. do.

For example, when the cylinder block is heated to a high temperature, the coolant heated by the high temperature heat generated by the engine is moved to a radiator (not shown), and the coolant of the radiator is inlet of the water pump 1 ( 211) and flows through the outlet 212 and is supplied to the cylinder block of the engine as described above, thereby cooling the heat of the overheated cylinder block and repeatedly supplying the coolant moved through the radiator to supply the cylinder block again. Will be performed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation in the scope of the appended claims. It will be understood by those skilled in the art that various modifications may be made and equivalents may be resorted to without departing from the scope of the appended claims.

1 is a view showing a typical automotive cooling system.

2 is a view showing a vehicle water pump according to the present invention.

3 is a view illustrating first and second magnets provided in a vehicle water pump according to the present invention;

Figure 4 is a view showing a first magnet provided in the vehicle water pump according to the present invention.

5 is an operational state diagram of a vehicle water pump according to the present invention.

6 is a view showing another embodiment of a vehicle water pump according to the present invention.

FIG. 7 is an enlarged view of the first and second magnets shown in FIG. 6;

8 is an operational state diagram according to another embodiment of the vehicle water pump.

* Description of the symbols for the main parts of the drawings *

200 housing part 202 partition wall

210: circulation region 211: inlet

212 outlet 214 impeller

218: second magnet 220: drive unit

222: rotor 224: magnetic material

226: first magnet 230: driving region

Claims (11)

A circulation region in which the cooling water is introduced and pressurized so that the cooling water is supplied to the cylinder block to perform cooling; A water pump for a vehicle, which is provided separately from the circulation region and includes a driving region in which a driving unit is installed to pressurize the coolant introduced through the circulation region. According to claim 1, Cooling water flows in the circulation region of the housing portion, the partition wall is formed so that the cooling water does not flow into the drive region. According to claim 1, In the driving part of the housing part A rotor generating driving force; A water pump for a vehicle, comprising: a first magnet coupled to a rotor shaft tip of the rotor and provided with magnetic bodies spaced at equal intervals in the circumferential direction. The method of claim 3, wherein The first magnet of the housing portion has a separation distance h1 spaced apart from the lower surface of the partition wall. According to claim 1, In the circulation region of the housing part An inlet and an outlet formed to move the cooling water; An impeller positioned on the inlet and increasing the pressure of the cooling water by a driving force provided from the driving unit; Vehicle water pump, characterized in that the second magnet is coupled to the end of the impeller shaft provided in the impeller is provided with a magnetic material spaced at equal intervals in the circumferential direction. The method according to any one of claims 2 to 5, The second magnet of the housing part has a separation distance h2 spaced apart from the upper surface of the partition wall. 6. The method of claim 5, The housing unit is characterized in that the Hall sensor (Hall Sensor) is provided for detecting the operating state of the second magnet. A circulation region in which the cooling water is introduced and pressurized so that the cooling water is supplied to the cylinder block to perform cooling; A water pump for a vehicle, which is provided separately from the circulation region and includes a driving region including a driving region in which a driving portion is installed to increase a driving torque for pressurizing the coolant introduced through the circulation region. The method of claim 8, In the driving part of the housing part Coupled to the rotor shaft tip of the rotor where the driving force is generated A water pump for a vehicle, characterized in that a disk-shaped first magnet is provided on the outer circumferential surface of the first bent portion, the end of which is bent upwardly, with the magnetic material being installed at equal intervals. The method according to any one of claims 8 to 9, In the circulation area An inlet and an outlet formed to move the cooling water; An impeller positioned on the inlet and increasing the pressure of the cooling water by a driving force provided from the driving unit; A water pump for a vehicle, characterized in that a disk-shaped second magnet is provided at equal intervals on an inner circumferential surface of the second bent portion coupled to an end of an impeller shaft provided in the impeller and bent downward. The method of claim 10, The first magnet is Vehicle water pump, characterized in that located in the state accommodated inside the second magnet.

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