JP2003148396A - Pump, and dish washer using pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pump having the reversible function and a dish washer using the pump in which a pump structure is simplified, the size, the weight, the cost and the noise level of the pump are reduced, and the pump performance and the durability are improved. SOLUTION: The pump 1 comprises a motor unit 10 with a rotor 16 having a magnet body 19 rotatably disposed on the inner circumference of a stator 11, and a pump unit 30 having a water inlet and a water outlet which accommodates an impeller 31 connected to the rotor 16, the impeller 31 comprises a blade 32 and a shroud 33, and the shroud 33 has the water sucking and water feeding function.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump having a reversible function for sending a fluid sucked from a water intake port to a predetermined water supply port according to a rotation direction of a motor, and a dishwasher using the pump.

[0002]

2. Description of the Related Art In a dishwasher, when washing dishes, one pump has a function of pumping washing water to a washing nozzle and spraying it toward the dishes and a function of discharging dirty water after washing out of the machine. A pump having a reversible function is commonly used.

In a conventional reversible pump, one pump is provided with two water inlets and water outlets, and the fluid sucked from one of the water inlets is sent in a predetermined manner in response to the switching between the normal rotation and the reverse rotation of the motor. It is for feeding and discharging to the water outlet, and is provided with two types of impellers, a normal rotation impeller and a reverse rotation impeller, which are connected to a motor, and selectively use the water feeding action of the impeller according to the rotation direction of the motor.

An example of the above conventional reversible pump will be described with reference to the longitudinal sectional view of the pump shown in FIG.

The reversible pump 100 shown in FIG.
Rotor 105 covered with outer shells 106a and 106b on both sides
A motor 10 including a stator 107 arranged on the outer periphery of the motor 10
2 includes a motor unit 101 having a cooling fan 104, and a pump unit 110 connected to a side portion of the motor unit 101 by an rotating shaft 103 via an oil seal 116, and constitutes a horizontal pump.

As shown in the figure, the pump section 110 has a first
The casing 111 and the second casing 112 form the partition wall 11.
A casing for partitioning the first pump chamber 122 and the second pump chamber 132 with the No. 3 sandwiched therebetween is formed via an O-ring 115. The normal rotation impeller 121 and the reverse rotation impeller 131 connected to the rotary shaft 103 are housed in the first pump chamber 122 and the second pump chamber 132, respectively, and the respective water suction port and discharge port and flowing water thereof. It has a road.

At the time of normal rotation of the motor 102, the fluid sucked from the first water suction port 123 by the suction action due to the rotation of the normal rotation impeller 121 is introduced into the first pump chamber 122 through the water flow passage 125, and the normal rotation type is used. The centrifugal action of the impeller 121 discharges the water from the first water outlet 124 to the outside of the pump.

During this normal rotation, the reverse rotation impeller 131 also rotates, but no suction action occurs, and since the two pump chambers are partitioned by the partition wall 113, the first pump chamber 1
The fluid of No. 22 does not flow into the second pump chamber 132, and the water feeding operation by the normal rotation impeller 121 is performed.

On the other hand, when the motor 102 is rotated in the reverse direction, the suction action by the rotation of the reverse rotation impeller 131 causes the second water suction port 1 to move.
The fluid sucked from 33 is introduced into the second pump chamber 132, a vortex is generated in the pump chamber, and the fluid is discharged from the second discharge port 134 to the outside of the pump.

At the time of this reverse rotation, the normal rotation impeller 121 also rotates in the same manner as described above, but no suction action is generated, and the fluid does not flow into the first pump chamber 122, and the water is fed by the reverse rotation impeller 131. Driving is performed.

The above-mentioned conventional reversible pump 100 is equipped with two types of impellers which satisfy the reversible function,
In order to satisfy the water supply function of the normal rotation impeller 121 and the reverse rotation impeller 131, each requires a separate pump chamber, a water flow path, a water intake port, and a water supply port, which complicates the structure of the pump and increases the number of parts. Assembling man-hours is also required, and further, a large motor that drives two impellers at the same time is provided, and the cost of the pump is high.

In addition, since the pump structure is complicated, the pump structure is horizontal and the long rotary shaft 103 is required, the pump becomes large, and the number of pipes is large. Therefore, the space for installing the pump is large. However, there is a problem in that it is difficult to reduce the size of the product and the installability is poor, because the burden of securing the pipes, arranging the pipes, and connecting the pipes increases.

Further, when the rotating direction of the impeller is changed, the pump is temporarily stopped and air is likely to enter from the discharge port, and the air contained in the stopped pump chamber has a gap 114 between the rotary shaft 103 and the partition wall 113. The so-called "air trapping" phenomenon of the pump, which easily enters the pump chamber during operation through the
There are problems that large noise is generated due to the mixture of air and pump efficiency is reduced.

Further, there is a problem that the water resistance is not sufficient because the motor unit 101 does not have a closed structure, the problem that the water intake is located in the middle of the pump and the amount of remaining water is large, and that the oil seal 116 and the rotary shaft 103 are There is also a problem that a load is applied to the motor due to friction.

Therefore, in the products such as the dishwasher using the above-mentioned conventional pump 100, it is difficult to reduce the cost, downsize and reduce the weight, and there are problems of noise, performance, lack of durability, assembling property and space of the product. There are issues such as effective use.

[0016]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems and simplifies the pump structure using one impeller having both the water feed function when the motor rotates forward and the motor reversely rotates. It is an object of the present invention to provide a pump having a reversible function that reduces the size, weight, cost and noise of a pump and improves pump performance and durability, and a dishwasher using the pump. It is a thing.

[0017]

According to a first aspect of the present invention, there is provided a motor unit in which a rotor having a magnetic material is rotatably arranged on an inner circumference of a stator, a water intake port, and a water supply port. And a pump unit for accommodating an impeller connected to the child, wherein the impeller is composed of blades and a shroud, and the shroud has a function of absorbing and sending water.

In the pump of the present invention, since the shroud provided in the impeller has a water absorbing and water feeding function, the blades shared by the shroud can be omitted and the impeller structure can be simplified. In addition, since the pump section is provided with a water intake port and a water supply port, and the pump chamber is formed in one room, the structure of the pump unit is simplified and the flow channel is shortened, and the number of parts and the number of assembly steps are also reduced. Therefore, the size and weight of the pump can be reduced and the cost can be reduced. In addition, the noise due to "air bleeding" is reduced, and the noise of water supply and drainage that passes through the pump is also reduced, which makes the pump quieter.

The invention of claim 2 is characterized in that when the motor rotates in the normal direction, water is absorbed by the rotating action of the blades, and when the motor rotates in the reverse direction, water is absorbed by the rotating action of the shroud, and the fluid is sent to a predetermined water supply port. The pump according to claim 1.

In the pump of the present invention, the water absorption and water supply operation by the blades or shrouds is selected in accordance with the forward and reverse rotations of the motor, and the reversible function of discharging the fluid sucked from the water intake port to the predetermined water supply port and discharging it outside the pump. Can meet.

According to a third aspect of the present invention, the motor section and the pump section are formed in a vertical structure, and a water inlet is provided at the bottom of the pump section.
The pump described in 1.

In the pump of the present invention, since the pump portion is located on the lower side of the pump, the fluid suction property and the water feeding property are improved,
The amount of residual water in the pump is also improved. In addition, the vertical direction of the pump can be reduced by downsizing, which improves the installability.

The invention according to claim 4 is the pump according to any one of claims 1 to 3, characterized in that a common water intake port is provided during forward rotation and reverse rotation of the motor. The number of pumps is reduced, the installability of pumps is improved, the installation space is utilized, and the burden of pipe connection is reduced.

A fifth aspect of the present invention is the pump according to any one of the first to fourth aspects, characterized in that the motor section is constituted by a brushless DC motor. Is easy to control, and low-speed operation can reduce noise.

According to a sixth aspect of the present invention, in the pump according to any one of the first to fifth aspects, the motor portion is molded with a molding resin. The water resistance of electrical parts is improved, failure due to electric leakage and deterioration of parts is prevented, and the service life is extended.

According to a seventh aspect of the present invention, there is provided a dishwasher including a pump for supplying the washing water to the washing nozzle and sending the wastewater after washing to the drain port, wherein the pump is any one of the first to sixth aspects. A dishwasher, which is the pump described in 1.

In the dishwasher of the present invention, when the pump is rotated in the normal direction, the washing water is supplied to the washing nozzle to wash the dishes efficiently, and when it is rotated in the reverse direction, the small size having excellent performance of draining the wastewater after washing out of the machine, It is possible to inexpensively obtain a dishwasher that is lightweight, has low noise, and has a long durable life.

The invention of claim 8 is characterized in that the pump is provided at the bottom of the dishwasher.
The dishwasher described in.

The degree of freedom in designing the piping for the washing water supply path and drainage path is increased, and the performance and downsizing of the dishwasher can be further improved. Furthermore, if the motor part of the pump is molded, the durability of the pump can be improved and the life of the dishwasher can be extended even at the bottom of a device with high humidity.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a vertical sectional view of the pump 1 of the embodiment.

The pump 1 has a magnetic body 1 on the inner circumference of the stator 16.
Motor unit 1 in which a rotor 16 having 9 is rotatably arranged
0, and a pump unit 30 having a water intake port and a water supply port and accommodating an impeller 31 connected to the rotor 16.

The motor unit 10 is composed of a brushless DC motor, and comprises a rotor 16 rotatably arranged at the center of the motor unit 10 and a stator 11 arranged along the outer periphery of the rotor 16. Has become.

The rotor 16 has a permanent magnet 19 arranged around a rotary shaft 17 connected to the rotary shaft 17 via a column portion 18, and the rotary shaft 17 is connected to an upper cover 22 and a lower cover 23. The bearings 20 and 21 are provided so that the bearings 20 and 21 are provided at the center of the motor unit 10 and the washers 24 and 25 are used to vertically position the motor unit 10.

The stator 11 is composed of a laminated iron core 12 and windings 13 wound around the iron core 12, a circuit board 14 for driving a motor is arranged on the lower side of the stator 11, and the whole is molded resin 15. It is molded by and prevents moisture from entering the electric parts.

The rotor 16 and the stator 11 are positioned so that the permanent magnet 19 and the iron core 12 face each other,
They are connected by the upper cover 22 and the lower cover 23, and are fixed by screws 26.

In the pump portion 30, one end portion of the rotary shaft 17 has a bearing 45 built in the central portion of the casing 40,
The shaft 17 is supported by 46 and projects into the casing 40.
The impeller 31 attached to the tip portion is housed in the casing 40 to form a pump chamber 41.

The impeller 31 comprises a fugal-shaped blade 32, a front shroud 33 and a rear shroud 35. The above three members are integrated by welding, and the rear shroud 3
It is fixed to the tip portion of the rotary shaft 17 at the five portions.

The fugal blades 32 absorb and feed water when the rotor 16 rotates in the normal direction, and suck the fluid from the water inlet 36 for the normal rotation to generate a swirling flow in the pump chamber 41 to send the water for the normal rotation. It is sent to the water port 37.

The front shroud 33 and the rear shroud 35 are disk-shaped bodies or ring-shaped bodies having a cross-sectional shape as shown in the figure. The front shroud 33 and the annular shroud 35 are integrally connected by sandwiching the fugal blades 32 from both sides. The flow is efficiently guided to the discharge port 42 and the fluid is introduced to the water supply pipe 43.

The front shroud 33 has the function of introducing the swirling flow into the water supply pipe 43, and also has the functions of absorbing water and supplying water when the rotor 16 rotates in the reverse direction.

The water absorption and water feeding functions of the front shroud 33 are performed by the reversing blades 34 provided along the lower surface of the front shroud 33.

A water inlet 36 for normal rotation is provided below the impeller 31.
However, the forward rotation water supply port 37 is provided at the tip of the water supply pipe 43 following the discharge port 42 of the pump chamber 41.

Further, a water reversing inlet 38 is provided below the front shroud 33 of the impeller 31, and a water reversing inlet 39 is provided at a position where the height difference with the water reversing inlet 38 is small.

Each of the water suction ports 36, 38, the water supply port 37,
39 and the water supply pipe 43 are formed by a casing 40.

The motor unit 10 and the pump unit 30 having the above structure are vertically connected in a vertical manner, the mold resin 15 and the casing 40 are in close contact with each other, and are fastened with the screw 25 to form the pump 1 having the vertical structure. Is forming.

In the pump 1 having the above structure, the impeller 31 is rotated by the drive of the motor section, and the water is sucked into the pump chamber 41 from the normal rotation water absorption port 36 by the water absorption action of the fugal type blade 32 during the normal rotation. The swirling flow generated in the pump chamber 41 by the centrifugal action of the blades 32 is shrouded 33, 3
A vortex is formed between the water 5 and the flowing water 44 toward the discharge port 42, passes through the discharge port 42, is sent to the water supply pipe 43, and is discharged from the forward rotation water supply port 37 to the outside of the pump.

When the impeller 31 is rotated in the reverse direction, water is absorbed by the reverse rotation blade 34 provided on the lower surface of the front shroud 33, and the fluid is sucked into the pump 1 through the reverse rotation water absorption port 38. A water flow is formed between the casings 40, and the water is drained to the outside of the pump through the reverse water inlet 38 and the reverse water inlet 39 having a small height difference.

During this reverse operation, the running water flows into the pump chamber 41.
It is regulated by the front shroud 33 so that it does not flow into the inside, and because the water supply capacity of the reversing vanes 34 is relatively low, water cannot be supplied to the discharge port 42 located at a position higher than the reverse rotation water inlet 38, The flowing water will be discharged from the reverse water supply port 39.

Therefore, the pump 1 automatically sucks a fluid from a predetermined water intake port depending on the rotation direction by the function of the impeller 31 to absorb and feed water in accordance with the normal and reverse rotation of the motor unit 10. The pump has a reversible function of discharging water from a predetermined water supply port, and the front shroud 33 has a function of an impeller, so that a conventional reversing impeller can be omitted.

In this pump 1, since the two types of conventional impellers for forward rotation and reverse rotation are integrated into one impeller, the impeller is downsized and its peripheral structure is simplified, and at the same time the pump chamber is The internal structure of the pump unit 30 is greatly simplified, such as a single flow path, the number of parts and the number of assembly steps are reduced, and the axial direction of the pump unit can be shortened. The compactness, weight reduction and cost reduction will be carried out.

Further, since the pump chambers are integrated into one, "air bleeding" which has been caused by the movement of air between two conventional pump chambers is eliminated, noise is reduced, and pump efficiency is also improved. .

Further, the pump 1 has the motor unit 10 on the upper side,
Since the pump 30 has a vertical structure arranged in the lower part, the water intake port is provided downward on the bottom of the pump to improve the fluid suction property, and at the time of reverse rotation, the water supply port is located in the lower part of the pump to improve the drainage property. The amount of residual water in the pump is reduced. And
Since the running water channel is formed in the lower pump part of the pump 1,
Watering noise is reduced and noise is reduced.

Since the pump having the vertical structure is thinned in the direction of the rotation axis, the pump can be downsized and the installability in the apparatus can be improved.

Further, since the motor section 10 is constituted by a brushless DC motor, the rotation speed and rotation direction of the motor can be easily controlled, so that adjustment of water supply amount and conversion of water supply direction can be performed easily and in a short time. In addition, the motor can be operated at a low speed, and the low-speed operation can reduce noise particularly at night.

Further, since the motor portion 10 is molded with the molding resin 15 to prevent the ingress of water, the water resistance of the electric components such as the stator 11 and the substrate 14 is improved, and the electric leakage and the deterioration of the components cause a failure. Is prevented and the life of the pump can be extended.

A pump 2 shown in the vertical sectional view of FIG. 2 is a modification of the pump 1.

As shown in the figure, the pump 2 is provided with a water inlet 50 in which the water inlet for forward rotation and the water inlet for reverse rotation in the pump 1 are made common to one, and the water inlet for reverse rotation in FIG. 1 is provided. 38 can be omitted.

The pump 2 has a water suction port 50 and a water suction passage 51.
The structure other than that is the same as that of the pump 1, and the reference numerals of FIG. 2 are the same as those of FIG. 1 except for the water inlet 50 and the water suction passage 51.

Like the pump 1, the pump 2 sucks the fluid into the pump chamber 41 from the water suction port 50 by the water absorption action of the fugal type blade 32 when the impeller 31 is normally rotated.
The swirling flow generated in the pump chamber 41 by the centrifugal action of the blades 32 is guided between the shrouds 33 and 35, and is discharged from the discharge port 42.
It becomes a flow path 44 that passes through the water supply pipe 43 and is discharged from the forward rotation water supply port 37 to the outside of the pump.

When the impeller 31 is rotated in the reverse direction, the fluid is pumped from the water intake port 50 through the water absorption passage 51 provided along the front shroud 33 by the water absorption action of the reversing blade 34 provided on the lower surface of the front shroud 33. 1, and a water flow is formed between the front shroud 33 and the casing 40, and the water is discharged from the reverse rotation water supply port 39 to the outside of the pump.

During this reverse rotation operation, for the same reason as in the case of the pump 1, the running water is not sent to the forward rotation water supply port 37, and most of the running water is discharged from the reverse rotation water supply port 39.

In the pump 2, since the water inlets for forward rotation and reverse rotation are shared and integrated with the water inlet 50, the number of pipes of two water pipes and two water pipes required by the conventional pump or pump 1 (total 4 pipes).
Book) is reduced to three. As a result, the space in which the number of pipes is reduced expands, the pump can be easily incorporated into the product, and the burden required for pipe connection is reduced, thus improving the installability.

Therefore, in the above-mentioned pump 1, a pump having a reversible function for simplifying the pump structure and reducing the size, weight, cost and noise of the pump and improving pump performance and durability can be obtained. In No. 2, a pump can be obtained in which the performance of the pump 1 can be maintained and the installability of the pump can be further improved.

FIG. 3 is a schematic view showing the internal structure of the dishwasher 3 of the embodiment using the pump 1.

As shown in the figure, the dishwasher 3 has a washing chamber 61 which is kept closed by a door (not shown) which can be opened and closed on the front side, and tableware 63 placed on a table 62 in the washing chamber 61. A rack 64 for setting the cleaning water, a water tank 67 for collecting and collecting the cleaning water 65 and the dirty water 66 after cleaning, and a cleaning nozzle 68 provided in the upper center of the cleaning chamber 61 with a plurality of injection holes 69 for the cleaning water 65. A drying fan 71 for supplying the cleaning water 65 to the cleaning nozzle 68 and discharging the waste water 66 after cleaning to the outside of the machine, and a drying fan 71 for drying the tableware 63 after cleaning, Wash, rinse,
A control circuit 72 for controlling each washing process for drying is housed in the main body of the dishwasher 3.

The pump 1 is installed such that the water inlets 36 and 38 are located in a water tank 67 provided at the bottom of the dishwasher 3, and a water supply pipe 73 from a water supply for supplying the wash water 65 to the water tank 67, A drain pipe 74 for draining the dirty water stored in the water tank 67 to the outside of the machine is connected to the pump 1.

The dishwasher 3 having the above-mentioned structure is provided with the dishes 6
After arranging the rack 64 containing 3 in a predetermined position on the table 62, a predetermined amount of tap water is supplied from the water supply pipe 73 to the water tank 67 containing the detergent, and the wash water 65 is stored in the water tank 67 to start the operation. To do.

In the cleaning step, the cleaning water 65 sucked from the normal rotation water intake 36 by the normal rotation operation of the pump 1 flows through the pump, is discharged from the normal rotation water supply port 37, and is supplied to the supply pipe 70.
Then, it is sent under pressure to the washing nozzle 68 and is sprayed from the spray hole 69 to the tableware 63 for a predetermined time to perform cleaning.

When the cleaning is completed, the pump 1 is operated in the reverse direction, and the dirty water 66 after cleaning collected in the water tank 67 is sucked from the reverse water inlet 38 and flows through the pump 1 to the reverse water inlet 39. And is discharged to the outside of the machine through the drain pipe 74.

The above cleaning is repeated a predetermined number of times,
The washing process is completed.

The next rinsing step is the same operation as the above-mentioned washing step, but tap water containing no detergent is used as the washing water, and the tap water stored in the water tank 67 by the normal operation of the pump 1 is used. Is ejected from the ejection nozzle 68, and the tableware 6
The detergent and food residues attached to 3 are washed away, and the contaminated water collected in the water tank 67 by the reverse operation of the pump 1 is discharged from the drain pipe 74 to the outside of the machine. The rinse is repeated.

When the cleaning and rinsing steps are completed, the cleaning chamber 6
The drying fan 71 provided on the side wall of No. 1 operates, the warm air circulates in the washing chamber 61, the dishes are dried, and a series of dish washing steps is completed. In this drying process, the pump 1 is stopped.

The operation of the pump 1 in the series of dishwashing processes, the control of the amount of water, the cleaning time, the temperature, etc., is performed by the supply of tap water according to the setting in the control circuit 72.

Pump 1 used in the dishwasher 3
Is small and lightweight, as explained above,
Moreover, it is a low-cost pump with low noise, excellent durability and pump performance.

Therefore, in the dishwasher 3 using the pump 1, it is possible to provide a dishwasher which is compact and lightweight, has low noise, is excellent in cleaning performance and drainage, and has a long life, at a low cost. Become.

Further, since the motor part is molded by the molding resin, the water resistance of the electric parts is improved even if the motor part is arranged at the bottom of the dishwasher with high humidity, so that the life of the dishwasher can be further extended. You can

When the pump 2 is used in the dishwasher 3 instead of the pump 1, the number of pipes in the dishwasher is reduced, the pipes arranged in the dishwasher are easily handled, and the degree of freedom in pipe design is increased. Installability to

In the dishwasher of the present invention, the washing water is supplied to the washing nozzle at the time of normal rotation of the pump to wash the dishes efficiently, and the wastewater after washing can be discharged to the outside of the machine at the time of the reverse rotation. It is possible to provide a dishwasher that is low in noise, low in cost, and excellent in cleaning performance and drainage.

[0080]

As described above, in the pump of the present invention, the impeller is composed of the forward rotation vane and the shroud,
Since the shroud has the function of absorbing and sending water when reversing,
The conventional impeller for reverse rotation is no longer required, and the impeller structure can be made very small and simple. At the same time, the structure of the pump section is simplified, so the number of parts that make up the pump can be reduced and the number of assembly steps can be reduced. Also, by using a vertical structure for the pump, pump performance is improved and noise is reduced. As a result, it is possible to obtain a small-sized, lightweight pump having excellent pump performance, low noise, and improved durability at low cost.

Therefore, in the dishwasher using the above-mentioned pump, the size and weight of the apparatus can be reduced, and the dishwasher that is low in noise during operation, has excellent cleaning performance and drainage, and has a long life can be provided at a low cost. You can

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a pump according to an embodiment.

FIG. 2 is a vertical cross-sectional view of a modified example pump of the embodiment.

FIG. 3 is a schematic diagram of the internal structure of the dishwasher of the embodiment.

FIG. 4 is a vertical cross-sectional view of a conventional pump.

[Explanation of symbols]

1,2 ... pump 3 ... Dishwasher 10: Motor part 11 ... Stator 16 …… Rotor 19 ... Magnetic material 30 ... Pump section 31 ... impeller 32 …… feather 33 ... Front shroud

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F04D 29/66 F04D 29/66 AF term (reference) 3B082 BF01 BF03 BF05 3H022 AA01 BA01 BA04 BA07 CA50 CA54 DA11 DA13 DA20 3H033 AA01 AA13 BB01 BB06 BB16 CC01 CC03 DD09 DD26 EE06 EE11 EE19 3H034 AA01 AA13 BB01 BB06 BB16 CC01 CC03 DD01 DD24 EE06 EE11 EE12 EE18

Claims (8)

[Claims] 1. A pump having a motor part in which a rotor having a magnetic material is rotatably arranged on an inner circumference of a stator, a water intake port and a water supply port, and containing an impeller connected to the rotor. A pump, wherein the impeller is composed of blades and a shroud, and the shroud has a water absorbing and water feeding function. 2. The motor according to claim 1, wherein when the motor rotates in the forward direction, water is absorbed by the rotating action of the blades, and when the motor rotates in the reverse direction, water is absorbed by the rotating action of the shroud, and the fluid is sent to a predetermined water supply port. Pump. 3. The pump according to claim 1, wherein the motor part and the pump part are formed in a vertical structure, and a water intake port is provided on the bottom part of the pump part. 4. The pump according to any one of claims 1 to 3, wherein a common water intake port is provided when the motor rotates in the normal direction and in the reverse direction. 5. The pump according to claim 1, wherein the motor section is a brushless DC motor. 6. The pump according to claim 1, wherein the motor section is molded with a molding resin. 7. A dishwasher with a built-in pump that supplies washing water to a washing nozzle and sends the dirty water after washing to a drain port, wherein the pump is the pump according to any one of claims 1 to 6. Dishwasher characterized by being. 8. The dishwasher according to claim 7, wherein the pump is provided at the bottom of the dishwasher.