CN215370262U

CN215370262U - A PCB board waterproof construction for ultra-thin water pump

Info

Publication number: CN215370262U
Application number: CN202121115990.5U
Authority: CN
Inventors: 贾自周
Original assignee: Dongguan Hongying Electronic Technology Co ltd
Current assignee: Dongguan Hongying Electronic Technology Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-12-31
Anticipated expiration: 2031-05-24

Abstract

The utility model discloses a PCB waterproof structure for an ultrathin water pump, which comprises the ultrathin water pump, the bottom of the ultra-thin water pump is provided with a base, the base is provided with a rotary flow passage, the inside of the rotary flow passage is filled with cooling water, the cooling water rotates in the rotating flow channel, the base is provided with a stator core, the bottom of the base is provided with a PCB mounting groove, the PCB is arranged in the PCB mounting groove, the base is provided with a plurality of wire passing holes for passing through wires, one end of the lead is connected with the PCB, the other end of the lead is connected with the stator core, and waterproof glue for sealing and waterproofing is arranged between the wire passing hole and the lead, the utility model can improve the waterproof capability of the PCB, reduce the axial height of the PCB, effectively improve the working efficiency of the motor, meanwhile, the cost for manufacturing the PCB is effectively reduced, the PCB is effectively cooled, and the service life of the PCB is prolonged.

Description

A PCB board waterproof construction for ultra-thin water pump

Technical Field

The utility model relates to the technical field of water pumps, in particular to a PCB waterproof structure for an ultrathin water pump.

Background

In traditional water pump, PCB board and stator core range upon range of from top to bottom are installed together to place inside rotatory runner, so the PCB board need carry out certain water repellent, prevent that the inside cooling water of rotatory runner from getting into the PCB board, cause PCB board corrosion or short circuit.

In the prior art, because the existing PCB is directly or indirectly contacted with cooling water, the PCB is waterproof through processes of paint dipping, film coating and the like, the waterproof grade of the PCB needs to be increased, the axial thicknesses of the PCB and the water pump are increased, the manufacturing cost of the PCB is increased, the resistance of an impeller is increased, and the working efficiency of the water pump is low; because PCB board and stator core range upon range of from top to bottom and install together, the unable abundant cooling water that contacts with of PCB board, the unable abundant heat dissipation that dispels the heat of can not in time and effectual IC production on the PCB board is diffused to IC's life has been reduced.

As shown in fig. 1, the water pump of the first conventional design, wherein the PCB board and the stator core are stacked up and down and installed together, the PCB board is installed below the stator core, the PCB board and the stator core are connected together through PIN needles, the PCB board and the stator core are all placed inside the rotary flow channel, specifically, the PCB board is waterproof through processes such as paint dipping and film coating.

As shown in fig. 2 is the water pump of the second kind of conventional design, wherein PCB board and stator core stack up from top to bottom and install together, the PCB board is installed in stator core's below, PCB board and stator core link together through the PIN needle, PCB board and stator core all place inside a sealed cavity of rotatory runner outside, utilize airtight cavity to carry out waterproof to PCB board and stator core.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides a PCB waterproof structure for an ultrathin water pump, which can improve the waterproof capacity of a PCB, reduce the axial height of the PCB, effectively improve the work efficiency of a motor, effectively reduce the cost for manufacturing the PCB, effectively radiate the PCB and prolong the service life of the PCB.

In order to achieve the purpose, the utility model provides a PCB waterproof structure for an ultrathin water pump, which comprises the ultrathin water pump, wherein a base is arranged at the bottom of the ultrathin water pump, a rotary flow passage is arranged on the base, the inside of the rotary flow passage is filled with cooling water, the cooling water rotates inside the rotary flow passage, a stator core is arranged on the base, a PCB mounting groove is arranged at the bottom of the base, a PCB is arranged in the PCB mounting groove, a plurality of wire passing holes for passing through wires are formed in the base, one end of each wire is connected with the PCB, the other end of each wire is connected with the stator core, and waterproof glue for sealing and waterproofing is arranged between each wire passing hole and each wire.

Preferably, the PCB board mounting groove and the PCB board are both triangular in shape.

Preferably, one side of the ultrathin water pump is provided with a water inlet connector, the other side of the ultrathin water pump is provided with a water outlet connector, and the PCB mounting groove and the PCB are located at the tail end of the water inlet connector.

Preferably, the PCB is provided with a top surface and a bottom surface, the top surface is provided with a drive IC chip, one side of the bottom surface is provided with a power input end, the other side of the bottom surface is provided with an output end, the power input end is connected with direct current, and the output end is electrically connected with the stator core through a lead.

Preferably, the base is a metal material member, the driving IC chip is tightly attached to the lower side of the base, and the driving IC chip is located between the base and the PCB.

Preferably, the PCB board is fixedly installed in the PCB board mounting groove through waterproof glue, and the PCB board mounting groove is sealed and encapsulated with waterproof glue.

Preferably, the ultrathin water pump further comprises a pump shell arranged above the base, the pump shell is arranged on the top cover, an impeller is arranged in the pump shell, the impeller is arranged above the stator core, a water inlet joint is arranged on one side of the pump shell, a water outlet joint is arranged on the other side of the pump shell, an annular water storage chamber on the side face of the pump shell and an annular suction chamber which is arranged on the pump shell and communicated with the annular water storage chamber are arranged between the top cover and the pump shell, the water inlet joint is communicated with the annular water storage chamber, the annular suction chamber is communicated with the rotary flow channel, and the rotary flow channel is communicated with the water outlet joint.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the PCB mounting groove is formed in the bottom of the base, the PCB is arranged in the PCB mounting groove, but the stator core is still arranged in the rotating flow channel, so that the PCB and the stator core are separated, the axial height of the ultrathin water pump is reduced, the base is provided with a plurality of wire passing holes for passing through wires, the PCB and the stator core are electrically connected through the wires, and waterproof glue for sealing is filled between the wire passing holes and the wires.

2. The PCB and the PCB mounting groove are triangular, the area of the PCB is reduced by 80% compared with the conventional circular PCB in the prior art, and the manufacturing cost of the PCB is effectively reduced.

3. The driving IC chip is tightly attached to the lower part of the base, the base is made of metal material components with good heat conductivity, and the upper part of the base is filled with circulating cooling water, so that heat generated by the driving IC chip can be effectively diffused, the PCB is effectively radiated, and the service life of the PCB is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a cross-sectional view of a water pump of a first conventional design;

FIG. 2 is a cross-sectional view of a water pump of a second conventional design;

FIG. 3 is a schematic view of the structure of the ultra-thin water pump provided by the utility model;

FIG. 4 is a cross-sectional view of an ultra-thin water pump provided by the present invention;

FIG. 5 is a schematic view of a base structure provided by the present invention;

FIG. 6 is a bottom view of the base provided by the present invention;

FIG. 7 is a top elevational view of a PCB board provided by the present invention;

FIG. 8 is a bottom elevational view of a PCB board provided by the present invention;

FIG. 9 is a schematic structural diagram of the ultra-thin water pump provided by the utility model with the top cover removed;

fig. 10 is a front view of the ultra-thin water pump provided by the present invention with the top cover removed.

The figure includes:

the water pump comprises an ultrathin water pump body 1, a base 2, a rotary flow channel 3, a stator core 4, a PCB mounting groove 5, a PCB 6, a wire passing hole 7, a water inlet connector 61, a water outlet connector 62, a top surface 63, a bottom surface 64, a drive IC chip 65, a power input end 66, a power output end 67, a pump shell 81, a top cover 82, an impeller 84, an annular water storage chamber 87 and an annular suction chamber 91.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are one embodiment of the present invention, and not all embodiments of the present invention. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.

Referring to fig. 3 to 10, the present invention provides a PCB waterproof structure for an ultra-thin water pump, including an ultra-thin water pump 1, a base 2 is installed at the bottom of the ultra-thin water pump 1, a rotating flow channel 3 is disposed on the base 2, the rotating flow channel 3 is filled with cooling water, the cooling water rotates inside the rotating flow channel 3, a stator core 4 is installed on the base 2, a PCB installation groove 5 is disposed at one side of the bottom of the base 2, a PCB 6 is installed in the PCB installation groove 5, specifically, compared with the prior art in which the PCB 6 and the stator core 4 are stacked up and down, the present embodiment installs the PCB 6 inside the PCB installation groove 5 in the base 2, so as to separate the PCB 6 from the stator core 4, reduce the axial height of the ultra-thin water pump, and simultaneously make the waterproof of the PCB 6 simpler, and the PCB 6 does not need a higher waterproof level, the manufacturing cost of the PCB panel 6 is reduced.

As shown in fig. 4 and 5, be equipped with a plurality of on base 2 and be used for passing the line hole 7 of wire, PCB board 6 is connected to wire one end, and stator core 4 is connected to the other end, cross and install between line hole 7 and the wire and be used for sealed waterproof glue, through cross the coating between line hole 7 and wire and have waterproof glue, can make on the unable PCB board 6 that gets into of cooling water, improved PCB board 6's waterproof ability.

Because the PCB 6 does not need a higher waterproof grade, the PCB 6 can reduce the axial height, so that the resistance of the impeller 84 is reduced, the work efficiency of the motor is effectively improved, and the cost for manufacturing the PCB 6 is effectively reduced.

As shown in fig. 6 to 8, the PCB mounting groove 5 and the PCB 6 are both triangular, and have an area of only 0.65 square centimeter, which is reduced by 80% compared with the conventional circular PCB in the prior art, thereby effectively reducing the manufacturing cost of the PCB 6.

As shown in fig. 9, the ultra-thin water pump 1 has a water inlet connector 61 on one side and a water outlet connector 62 on the other side, and both the PCB board mounting groove 5 and the PCB board 6 are located at the end of the water inlet connector 61 because the end space of the water inlet connector 61 is large.

As shown in fig. 7 and 8, the PCB 6 has a top surface 63 and a bottom surface 64, the top surface 63 is provided with a driving IC chip 65, one side of the bottom surface 64 is provided with a power input terminal 66, the other side is provided with an output terminal 67, the power input terminal 66 is connected to a direct current, and the output terminal 67 is electrically connected to the stator core 4 through a conducting wire.

Base 2 is the metal material component, drive IC chip 65 hugs closely in base 2 below, drive IC chip 65 is located between base 2 and the PCB board 6, base 2 can use the metal material component that has good heat conductivity to make, in this embodiment, base 2 is aluminum product or aluminium base alloy material component, in other embodiments, base 2 can also be copper product or copper base alloy material component to base 2 top has been filled with endless cooling water, can effectively diffuse the heat that drive IC chip 65 produced, effectively dispels the heat to PCB board 6, extension PCB board 6's life.

In this embodiment, because the space is limited, the PCB 6 is fixedly mounted in the PCB mounting groove 5 by waterproof glue, and the PCB mounting groove 5 is sealed and encapsulated by waterproof glue; within the allowable space range, the PCB 6 and the PCB mounting groove 5 may be fixed in other manners, such as: clamping, bolt connection and the like; the PCB board mounting groove 5 may also be sealed or encapsulated by a cover plate.

The ultrathin water pump 1 further comprises a pump shell 81 arranged above the base 2, a top cover 82 is arranged on the pump shell 81, an impeller 84 is arranged in the pump shell 81, the impeller 84 is arranged above the stator core 4, a water inlet connector 61 is arranged on one side of the pump shell 81, a water outlet connector 62 is arranged on the other side of the pump shell 81, an annular water storage chamber 87 on the side face of the pump shell 81 and an annular suction chamber 91 which is arranged on the pump shell 81 and communicated with the annular water storage chamber 87 are arranged between the top cover 82 and the pump shell 81, the water inlet connector 61 is communicated with the annular water storage chamber 87, the annular suction chamber 91 is communicated with the rotary flow channel 3, and the rotary flow channel 3 is communicated with the water outlet connector 62.

Heat transfer process on the PCB board 6: first, the heat source driving IC chip 65 operates to generate a large amount of heat; secondly, as the driving IC chip 65 is tightly attached to the lower part of the base 2, heat is transferred to the base 2; secondly, the inside of the rotary flow channel 3 of the base 2 is filled with cooling water, and heat on the base 2 is transferred into the cooling water; finally, the cooling water rotates inside the rotational flow path 3, and transfers heat to other portions.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a PCB board waterproof construction for ultra-thin water pump, a serial communication port, including ultra-thin water pump (1), base (2) have been installed to ultra-thin water pump (1) bottom, be equipped with rotatory runner (3) on base (2), rotatory runner (3) inside is full of the cooling water, the cooling water is at the inside rotation of rotatory runner (3), base (2) facial make-up is equipped with stator core (4), base (2) bottom is equipped with PCB board mounting groove (5), PCB board (6) are built-in to be equipped with in PCB board mounting groove (5), be equipped with line hole (7) of crossing that a plurality of is used for passing the wire on base (2), PCB board (6) is connected to wire one end, and stator core (4) are connected to the other end, it is used for sealed waterproof glue to install between line hole (7) and the wire.

2. The PCB waterproof structure for the ultra-thin water pump according to claim 1, wherein the PCB mounting groove (5) and the PCB (6) are both triangular in shape.

3. The PCB waterproof structure for the ultra-thin water pump according to claim 1, wherein the ultra-thin water pump (1) has a water inlet connector (61) at one side and a water outlet connector (62) at the other side, and the PCB mounting groove (5) and the PCB (6) are both located at the end of the water inlet connector (61).

4. The PCB waterproof structure for the ultrathin water pump is characterized in that the PCB (6) is provided with a top surface (63) and a bottom surface (64), the top surface (63) is provided with a driving IC chip (65), one side of the bottom surface (64) is provided with a power input end (66), the other side of the bottom surface is provided with an output end (67), the power input end (66) is connected with direct current, and the output end (67) is electrically connected with the stator core (4) through a conducting wire.

5. The PCB waterproof structure for the ultra-thin water pump as claimed in claim 4, wherein the base (2) is a metal material component, the driving IC chip (65) is tightly attached to the lower part of the base (2), and the driving IC chip (65) is located between the base (2) and the PCB (6).

6. The PCB waterproof structure for the ultrathin water pump is characterized in that the PCB (6) is fixedly arranged in the PCB mounting groove (5) through waterproof glue, and the PCB mounting groove (5) is sealed and packaged by the waterproof glue.

7. The PCB waterproof structure for the ultrathin water pump as claimed in claim 3, wherein the ultrathin water pump (1) further comprises a pump case (81) installed above the base (2), the pump case (81) is installed on a top cover (82), an impeller (84) is installed inside the pump case (81), the impeller (84) is installed above the stator core (4), a water inlet connector (61) is installed on one side of the pump case (81), a water outlet connector (62) is installed on the other side of the pump case, an annular water storage chamber (87) on the side of the pump case (81) and an annular suction chamber (91) which is communicated with the annular water storage chamber (87) and is arranged on the pump case (81) are arranged between the top cover (82) and the pump case (81), the water inlet connector (61) is communicated with the annular water storage chamber (87), and the annular suction chamber (91) is communicated with the rotary runner (3), the rotary flow channel (3) is communicated with a water outlet joint (62).