CN206156884U - Purifier - Google Patents

Abstract

The utility model discloses a purifier, this purifier include a plurality of filter cores, connect the water route of a plurality of filter cores to and use simultaneously with the water route intercommunication and think the membrane booster pump of an at least filter core pressure boost, this membrane booster pump include the pump head and with pump head sealing connection's motor, the pump head includes balance seat subassembly, balance seat subassembly includes eccentric cam, balance bearing and balance seat, wherein, eccentric cam includes the body that is close to the motor to reach the protruding axial region that the body deviates from the motor one side of locating, eccentric cam has the eccentric shaft hole who runs through body and axial region, is the angle range between eccentric shaft hole's the axis and the axis of axial region 3.3 3.5 the degree, eccentric cam passes through the eccentric shaft hole cover and establishes in the pivot of motor, and balance bearing cover is established on the axial region, and the balance seat cover is established on the balance bearing, and the motor is brushless motor, is equipped with fixing support on the surface of motor. The utility model discloses purifier noise and assembly costs are low.

Description

Water purifier

Technical Field

The utility model relates to a water treatment facilities field, in particular to purifier.

Background

At present, the market of the reverse osmosis water purifier is more and more mature, and the cost performance requirement of a consumer on the water purifier is higher and higher. The existing water purifier generally adopts a direct-current brush motor booster pump, but the booster pump has large vibration and large volume, and needs to be provided with a special vibration damping structure during installation, so that the noise and the cost of the whole water purifier are high, and the requirements of consumers are difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a water purifier, aim at solving the technical problem that current water purifier noise is big, assembly cost is high.

In order to achieve the above purpose, the water purifier provided by the utility model comprises a plurality of filter elements, a water path connecting the filter elements, and a diaphragm booster pump communicated with the water path and used for boosting the pressure of at least one filter element; the diaphragm booster pump comprises a pump head and a motor hermetically connected with the pump head, the pump head comprises a balance wheel seat assembly, the balance wheel seat assembly comprises an eccentric cam, a balance wheel bearing and a balance wheel seat, wherein,

the eccentric cam comprises a body close to the motor and a shaft part convexly arranged on one surface of the body, which is far away from the motor, and is provided with an eccentric shaft hole penetrating through the body and the shaft part, and the included angle between the axis of the eccentric shaft hole and the axis of the shaft part is 3.3-3.5 degrees;

the eccentric cam is sleeved on a rotating shaft of the motor through the eccentric shaft hole, the balance wheel bearing is sleeved on the shaft part, and the balance wheel seat is sleeved on the balance wheel bearing;

the motor is a brushless motor, and a fixed support is arranged on the outer surface of the motor.

Preferably, the motor includes a housing, and a motor stator and a motor rotor provided inside the housing, the housing includes:

the shell body is arranged in a cylindrical shape;

the front end cover is arranged at one end of the shell body and is positioned between the shell body and the pump head;

the rear end cover is arranged at the other end of the shell body, and the rear end cover and the shell body are integrally arranged.

Preferably, the center of the inner wall surface of the rear end cover is concavely provided with a bearing chamber; the motor also comprises a bearing which is arranged in the bearing chamber and sleeved on the output shaft of the motor.

Preferably, the motor stator is sleeved on the periphery of the motor rotor and is tightly matched with the inner wall surface of the shell body.

Preferably, the fixed support is arranged on the shell body.

Preferably, the fixed support comprises a lug and a connecting plate connected with the lug, the lug protrudes out of the peripheral surface of the shell body, and the connecting plate is in arc-shaped arrangement fitting the peripheral surface of the shell body.

Preferably, the number of the fixed supports is two, and the fixed supports are respectively arranged on two sides of the shell body; the lug is located on the central face of the housing body.

Preferably, the lug is provided with a fixing hole, and the motor further comprises a shockproof washer embedded in the fixing hole.

Preferably, the water purifier further comprises:

the flow sensor is arranged at a pure water outlet of the water purifier;

and the controller is electrically connected with the flow sensor and the motor and used for controlling the rotating speed of the motor according to the signal of the flow sensor.

The water purifier increases the swing amplitude of the diaphragm by improving the included angle between the shaft part of the eccentric cam and the shaft line of the eccentric shaft hole, and the required motor rotating speed is low under the requirement of the same flow; meanwhile, the brushless motor is used as the power of the diaphragm booster pump, and the output power of the motor is high in ratio to the overall dimension, so that the vibration is small, the motor can be directly fixed by the fixing support, and the noise and the assembly cost are reduced.

Drawings

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

FIG. 1 is a schematic structural diagram of an embodiment of the diaphragm booster pump of the present invention;

FIG. 2 is a schematic sectional view of the diaphragm booster pump of FIG. 1 taken along line II-II;

FIG. 3 is a schematic diagram of a partially exploded configuration of the membrane booster pump of FIG. 1;

FIG. 4 is a schematic diagram of the eccentric cam of FIG. 3;

FIG. 5 is a schematic view of the cross-sectional structure of FIG. 4 taken along line V-V;

fig. 6 is a schematic diagram of the waterway system of the water purifier.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)	Reference numerals	Name (R)
						100	Filter element	13	Diaphragm sheet	22	Outer casing
200	Water route	14	Piston valve seat	221	Shell body
						300	Water pump	15	Upper cover	222	Front end cover
1	Pump head	151	Pipe wall	223	Rear end cap
						11	Balance wheel set assembly	152	High-pressure water cavity	224	Bearing chamber
111	Eccentric cam	153	Low-pressure water cavity	23	Motor stator
						111a	Body	2	Electric machine	24	Motor rotor
111b	Shaft part	21	Fixed support	25	Output shaft
						112	Pendulum wheel bearing	211	Convex lug	26	Bearing assembly
113	Swinging wheel seat	212	Connecting plate	27	Circuit board
						114	Balance wheel	213	Fixing hole	3	Flow sensor
12	Base body	214	Shockproof washer	4	Controller

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a water purifier.

In the embodiment of the present invention, as shown in fig. 4, the water purifier includes a plurality of filter elements 100, a water path 200 connecting the plurality of filter elements 100, and a membrane booster pump 300 communicating with the water path 200 and configured to pressurize at least one of the filter elements 100;

referring to fig. 1 to 3, the diaphragm booster pump 300 includes a pump head 1, and a motor 2 hermetically connected to the pump head 1, wherein the motor 2 is a brushless motor, and a fixing support 21 is provided on an outer surface of the motor 2.

In the present embodiment, specifically, referring to fig. 4, the filter cartridge 100 is connected to the water path 200 in stages, specifically, from upstream to downstream, a PP cotton filter cartridge, a pre-activated carbon filter cartridge, an RO membrane filter cartridge, and a post-activated carbon filter cartridge.

In this embodiment, the membrane booster pump 300 is used to boost pressure for a front activated carbon filter cartridge, an RO membrane filter cartridge, and a rear activated carbon filter cartridge. In order to control the water path 100, a plurality of control valves are further provided in the water path 100.

Referring to fig. 4 and 5, the pump head 1 includes a balance assembly 11, a seat 12, a diaphragm 13, a piston valve seat 14, and an upper cover 15; wherein,

the eccentric cam 111 comprises a body 111a close to the motor 2 and a body 111a protruding from the body 111aA shaft part 111b on one surface of the motor 2, the eccentric cam 111 has an eccentric shaft hole penetrating the body 111a and the shaft part 111b, and the included angle between the axis of the eccentric shaft hole and the axis of the shaft part 111b is 3.3-3.5 degrees, as shown in fig. 5Shown;

the eccentric cam 111 is sleeved on the rotating shaft 25 of the motor 2 through an eccentric shaft hole, the balance wheel bearing 112 is sleeved on the shaft part 111b, and the balance wheel seat 1113 is sleeved on the balance wheel bearing 112;

the eccentric cam 111 is sleeved at the upper end of the output shaft 25 of the motor 2, and the top surface of the pendulum wheel seat 113 is convexly provided with three balance wheels 114;

the seat body 12 is sleeved on the balance wheel seat 113, and the top surface of the seat body 12 is provided with a through hole (not marked) for the balance wheel 114 to reciprocate up and down;

the diaphragm 13 is made of an elastic material and covers the lower end of the piston valve seat 14; the diaphragm 13 is arranged on the top surface of the seat body 12 and is fixedly connected with the balance wheel 114 through a piston push block;

the upper cover 15 is hollow, and the inner wall surface of the upper cover is provided with a pipe wall 151 in a downward protruding manner;

the lower end of the pipe wall 151 is in sealing contact with the piston valve seat 14, and thereby the cavity between the upper cover 15 and the piston valve seat 14 is partitioned into a high-pressure water chamber 152 and a low-pressure water chamber 153.

The upper cover 15, the base 12 and the front end cover 222 of the motor 2 are fixedly connected through screws.

In operation, the eccentric cam 111 rotates, the wobbler 114 moves up and down, the diaphragm 13 expands or contracts relative to the piston valve seat 14, and the volume between the diaphragm 13 and the piston valve seat 14 changes accordingly, so that water is sucked from the low-pressure water chamber 153 and is pushed into the high-pressure water chamber 152.

If the diaphragm booster pump 300 adopts the direct-current brush motor 2, on one hand, the volume of the brush motor 2 is relatively large to ensure the same output power due to the lower ratio of the output power of the brush motor 2 to the overall dimension.

On the other hand, as the brush of the brush motor 2 is contacted with the commutator to generate sparks, the electromagnetic compatibility of the whole machine is reduced, and noise is generated; and because the carbon brush is easy to wear, and certain carbon powder can be generated along with the increase of the using time, the carbon brush can not adapt to the space containing explosive gas.

The diaphragm booster pump 300 of the utility model increases the swing amplitude of the diaphragm by improving the included angle between the shaft part of the eccentric cam and the shaft line of the eccentric shaft hole, and the required motor rotating speed is low under the requirement of the same flow; meanwhile, by adopting the brushless motor as power, the output power of the motor 2 is high in ratio to the overall dimension, and the vibration is small, so that the motor can be directly fixed by the fixing support 21, and the noise and the assembly cost are reduced.

Through experimental verification, the utility model discloses a diaphragm booster pump, at "voltage 12-24V, the electric current is less than or equal to 1.5A, and maximum input power scope 18-36W, operating mode (0.2MPA pressure of intaking, 0.5Mpa play water pressure), under the experimental conditions of rotational speed scope 1200 + 1400rpm, the flow is more than or equal to 600ml/min to the noise is less than or equal to 40 dB.

Further, the motor 2 includes a housing 22, and a motor stator 23 and a motor rotor 24 disposed inside the housing 22, and the housing 22 includes:

a housing body 221, the housing body 221 being cylindrically configured;

a front end cover 222, wherein the front end cover 222 is disposed at one end of the housing 221, and the front end cover 222 is located between the housing 221 and the pump head 1;

and a rear cover 223, wherein the rear cover 223 is disposed at the other end of the housing 221, and the rear cover 223 is integrally disposed with the housing 221.

In this embodiment, compared with the conventional case 221 and rear end cap 223 separately installed and sealed by a sealing ring, the rear end cap 223 and the case 221 are integrally installed, so that the number of parts and processes can be reduced, the cost can be reduced, and the sealing performance of the motor 2 can be improved.

Further, a bearing chamber 224 is recessed in the center of the inner wall surface of the rear end cap 223; the motor 2 further comprises a bearing 26 disposed in the bearing chamber 224 and sleeved on the output shaft 25 of the motor 2.

In this embodiment, compared with the conventional method in which the bearing 26 is fixedly disposed on the rear end cover 223 separately disposed from the housing body 221, the method in which the bearing 26 is fixedly disposed in the integrated rear end cover 223 is beneficial to ensuring the concentricity between the bearing 26 and the housing body 221 or achieving the same concentricity standard with lower cost.

Preferably, the motor 2 further includes a circuit board 27, the circuit board 27 is attached to an inner wall surface of the rear end cover 223 and covers the bearing 26 chamber 224, and the circuit board 27 is provided with a through hole for the output shaft 25 to pass through. The circuit board 27 is provided with a drive circuit and/or a control circuit.

Further, the motor stator 23 is sleeved on the periphery of the motor rotor 24 and is tightly matched with the inner wall surface of the shell body 221, namely, the motor 2 is an inner rotor motor, and the inner rotor motor is more simply matched with the pump head 1, so that the assembly difficulty can be reduced.

Further, a fixing support 21 is provided on the housing body 221. It can be appreciated that the housing 221 has a relatively large area and is located relatively close to the center of gravity of the diaphragm booster pump 300, and thus, it is convenient to fixedly couple the stationary support 21 and it is easy to secure coupling strength.

Further, the fixing support 21 includes a lug 211 and a connecting plate 222 connected to the lug 211, the lug 211 protrudes out of the peripheral surface of the casing 221, and the connecting plate 222 is disposed in an arc shape fitting the peripheral surface of the casing 221.

In this embodiment, the lug 211 and the connecting plate 222 can be formed by bending a metal plate, and the connecting plate 222 is attached to the shell 221, so that when the lug is fixed by bonding and welding, higher connection strength can be generated. Specifically, the connecting plate 222 may be fixedly connected to the housing 221 by electric welding.

Further, the number of the fixing supports 21 is two, and the fixing supports are respectively arranged on two sides of the shell body 221; the lug 211 is located on the central plane of the housing body 221.

In this embodiment, since the diaphragm booster pump 300 using the brushless motor has a small size and a light weight, any one of the fixing supports 21 can be selected for fixing with the whole water purifier during installation, so that the diaphragm booster pump can be conveniently adapted to different installation spaces of water purifiers of different models.

The lug 211 is located on the central plane of the housing, and a sufficiently large installation space can be obtained, i.e., the fixing structure corresponding to the lug 211 is not easily interfered with the housing body 221 regardless of from which side of the lug 211 is fixed.

Further, the lug 211 is provided with a fixing hole 213, and the motor 2 further comprises a vibration-proof gasket 214 embedded in the fixing hole 213, so that the vibration transmitted from the diaphragm booster pump 300 to the whole water purifier can be reduced.

Further, referring to fig. 6, in an embodiment, the water purifier further includes:

the flow sensor 3 is arranged at a pure water outlet of the water purifier;

and the controller 4 is electrically connected with the flow sensor 3 and the motor 2 and used for controlling the rotating speed of the motor 2 according to the signal of the flow sensor 3.

In this embodiment, the diaphragm booster pump 300 is generally a constant flow pump, and the output performance of the diaphragm booster pump 300 may be attenuated after a certain period of use. The flow sensor 3 is arranged to provide a feedback signal, so that the controller 4 can change the rotating speed of the motor 2 according to the feedback signal, and the water outlet flow of the water purifier is balanced.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims (9)

1. A water purifier comprises a plurality of filter elements, a water path connected with the filter elements, and a diaphragm booster pump communicated with the water path and used for boosting at least one filter element,

the diaphragm booster pump comprises a pump head and a motor hermetically connected with the pump head, the pump head comprises a balance wheel seat assembly, the balance wheel seat assembly comprises an eccentric cam, a balance wheel bearing and a balance wheel seat, wherein,

the eccentric cam comprises a body close to the motor and a shaft part convexly arranged on one surface of the body, which is far away from the motor, and is provided with an eccentric shaft hole penetrating through the body and the shaft part, and the included angle between the axis of the eccentric shaft hole and the axis of the shaft part is 3.3-3.5 degrees;

the eccentric cam is sleeved on a rotating shaft of the motor through the eccentric shaft hole, the balance wheel bearing is sleeved on the shaft part, and the balance wheel seat is sleeved on the balance wheel bearing;

the motor is a brushless motor, and a fixed support is arranged on the outer surface of the motor.

2. The water purifier of claim 1, wherein the motor comprises a housing, and a motor stator and a motor rotor disposed inside the housing, the housing comprising:

the shell body is arranged in a cylindrical shape;

the front end cover is arranged at one end of the shell body and is positioned between the shell body and the pump head;

the rear end cover is arranged at the other end of the shell body, and the rear end cover and the shell body are integrally arranged.

3. The water purifier as recited in claim 2, wherein a bearing chamber is concavely arranged in the center of the inner wall surface of the rear end cover; the motor also comprises a bearing which is arranged in the bearing chamber and sleeved on the output shaft of the motor.

4. The water purifier as recited in claim 2, wherein said motor stator is sleeved on the periphery of said motor rotor and is tightly fitted with the inner wall surface of said housing.

5. The membrane booster pump as claimed in claim 1, wherein said fixed support is provided on said casing.

6. The water purifier as recited in claim 5, wherein said mounting bracket comprises a protrusion and a connecting plate connected to said protrusion, said protrusion protruding from said housing perimeter, said connecting plate being configured in an arc shape conforming to said housing perimeter.

7. The water purifier as recited in claim 6, wherein the number of said fixing supports is two, and said fixing supports are respectively disposed on two sides of said shell body; the lug is located on the central face of the housing body.

8. The water purifier as recited in claim 6 or 7, wherein said lug has a fixing hole, and said motor further comprises a shockproof washer embedded in said fixing hole.

9. The water purifier of claim 1, further comprising:

the flow sensor is arranged at a pure water outlet of the water purifier;

and the controller is electrically connected with the flow sensor and the motor and used for controlling the rotating speed of the motor according to the signal of the flow sensor.