CN218392590U - Water purifier easy to maintain - Google Patents

Abstract

The application discloses purifier of easy maintenance, including the casing and at the inside top-down first filter core that sets gradually of casing, booster pump and second filter core, the focus of booster pump and the focus of first filter core, the distance between the focus of second filter core is first interval and second interval respectively, the distance between the focus of booster pump and the central point of casing is the third interval, first interval is less than the second interval and is greater than the setting of third interval to make the focus of purifier deviate from the central point of casing and put. The application provides a pair of purifier of easy maintenance can solve current purifier and need carry out protection package in all directions, leads to the higher problem of packaging cost.

Description

Water purifier easy to maintain

Technical Field

The application relates to the technical field of domestic appliances, in particular to a water purifier easy to maintain.

Background

The diaphragm type booster pump that generally adopts among the present domestic reverse osmosis water purification machine mainly plays increase rivers pressure, makes the effect that high-pressure rivers can permeate the RO membrane. Because of the requirement of larger output pressure and flow, the requirement of higher motor torque and rotating speed leads to larger volume and weight of the booster pump, and the spatial position and the layout of the booster pump in the water purifier are more important. The existing water purifier comprises a shell, a first filter element, a booster pump and a second filter element which are sequentially arranged from top to bottom in the shell, wherein the first filter element, the booster pump and the second filter element are symmetrically arranged, so that the center of gravity of the whole water purifier is positioned at the center of the whole water purifier.

However, the water purifier that so sets up, once taking place to fall in the transportation, the orientation of falling of water purifier can be comparatively random, consequently need protect the packing in water purifier all directions, and packaging cost is higher.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide a purifier of easy maintenance for solve current purifier and need carry out protection package in all directions, lead to the higher problem of packaging cost.

In order to realize the above-mentioned purpose, the application provides a purifier of easy maintenance, including the casing and at the inside top-down first filter core that sets gradually of casing, booster pump and second filter core, the focus of booster pump and the focus of first filter core, the distance between the focus of second filter core is first interval and second interval respectively, the distance between the focus of booster pump and the central point of casing puts is the third interval, first interval is less than the second interval and is greater than the setting of third interval to make the focus of purifier deviate from the central point of casing.

So, through the focus that sets up the focus of booster pump and first filter core, the distance between the focus of second filter core is first interval and second interval respectively, the distance between the focus of booster pump and the central point of casing puts is the third interval, first interval is less than the second interval and is greater than the setting of third interval, realize the focus of booster pump and upwards be close to the focus of first filter core relatively, the central point who can not too keep away from the complete machine casing simultaneously puts, when making sure that the purifier is whole stable, with the focus of complete machine skew in the central point of casing and put the setting. In the transportation process, even the purifier takes place to fall, the complete machine also can fall towards the direction that the focus deviates, consequently can only carry out key protection package in the one side that the complete machine focus of purifier is partial when the packing, reduces the packing cost by a wide margin.

In a preferred implementation of the easy-to-maintain water purifier, the offset of the center of gravity of the water purifier in the horizontal direction is greater than the offset in the vertical direction.

So, be greater than the ascending offset of vertical side through the focus that sets up the purifier in the ascending offset of horizontal direction for the focus of complete machine all has the skew in horizontal direction and vertical direction, makes to the control effect that the complete machine falls the orientation better, has guaranteed simultaneously can not too much skew in vertical direction, avoids the complete machine focus to lean on too easily to empty.

In a preferred implementation mode of the easy-to-maintain water purifier, the shell comprises a front panel and a back plate, the distances between the gravity center of the booster pump and the front panel and between the gravity center of the booster pump and the back plate are a fourth distance and a fifth distance respectively, and the fourth distance is smaller than the fifth distance.

So, include front panel and backplate through setting up the casing, the interval between the focus of booster pump and front panel, the backplate is fourth interval and fifth interval respectively, and the fourth interval is less than the fifth interval for complete machine focus is partial to simple structure's front panel setting, can overturn towards front panel one side and land by the front panel earlier when the purifier falls carelessly, and the purifier of being convenient for is maintained after falling.

In a preferred implementation of the easy-to-maintain water purifier, a ratio of the fourth interval to the fifth interval is set within a range of 0 to 0.65.

So, locate within 0 to 0.65 scope through the ratio that sets up fourth interval and fifth interval for no matter the purifier is under empty water transport state, still under the water injection operating condition, the complete machine focus all is in one side of inclined to one side of preceding panel, and the purifier of being convenient for falls the back and carries out the maintenance.

In a preferred implementation mode of the water purifier easy to maintain, a detachable protective cover plate is arranged outside the front panel.

So, be equipped with detachable protection cover plate through setting up the front panel outside for the purifier orientation front panel upset when falling, so that the outside detachable protection cover plate of front panel lands earlier, and protection cover plate plays the cushioning guard action to the complete machine, even protection cover plate damages, also can conveniently dismantle the change, the maintenance of falling of the purifier of being convenient for.

In an implementation mode of the water purifier easy to maintain, the water purifier easy to maintain further comprises a water channel plate connected with the back plate and a water pipe connected between the water channel plate and the booster pump, wherein the water pipe is fixedly connected with the water channel plate through a locking assembly.

So, still include the water route board of being connected with the back plate through setting up the purifier, and connect the water pipe between water route board and booster pump, wherein, the water pipe is connected fixedly through lock stopping subassembly and water route board, when the purifier takes place to fall and is landed by the front panel, the booster pump can receive the inertial force towards the front panel, the protection effort that the booster pump was drawn to the reversal can be played to the booster pump to the water pipe this moment, prevent that the booster pump from inside impact front panel and other spare parts under the effect of inertial force, lock stopping subassembly is used for preventing that the water pipe from drawing and breaks away from with the water route board when dragging the booster pump, improve holistic reliability.

In an easy preferred implementation mode of purifier of maintaining, the locking subassembly includes the joint sleeve of being connected with the water route board to and the jack catch sleeve of being connected with water pipe end connection, the jack catch sleeve is inserted and is located in the joint sleeve to make water pipe and the inside water route intercommunication of water route board.

So, through setting up the locking subassembly include with the water route board be connected the adapter sleeve to and with water pipe end connection's jack catch sleeve, the jack catch sleeve is inserted and is located the adapter sleeve, so that water pipe and the inboard water route intercommunication in water route for the water pipe passes through the jack catch sleeve and is fixed with the epaxial adapter sleeve connection in water route, improves water piping connection's reliability.

In a preferred implementation of the easy-to-maintain water purifier, the joint sleeve is rotatably connected with the water outlet of the water circuit board so as to adjust the orientation of the joint sleeve.

So, through the delivery port swivelling joint that sets up adapter sleeve and water route board to adjust adapter sleeve's orientation, make the water pipe can rotate the assembly of being convenient for relatively the water route board at the in-process of installation.

In an easy preferred implementation mode of maintaining's purifier, the telescopic inside and outside wall of jack catch is equipped with first jack catch and second jack catch respectively, and first jack catch card is held in the water pipe outer wall, and the second jack catch cooperates with the draw-in groove that connects the sleeve inner wall.

Therefore, the first clamping jaws and the second clamping jaws are arranged on the inner wall and the outer wall of the clamping jaw sleeve respectively, the first clamping jaws are clamped on the outer wall of the water pipe, and the second clamping jaws are matched with the clamping grooves in the inner wall of the joint sleeve, so that the clamping jaw sleeve is clamped and fixed on the water pipe through the first clamping jaws and is clamped and fixed with the joint sleeve through the second clamping jaws, and the fixed connection of the water pipe and the water channel plate is realized.

In a preferred implementation of the easy-to-maintain water purifier, a sealing ring is arranged between the water pipe and the joint sleeve.

Therefore, the sealing ring is arranged between the water pipe and the joint sleeve, so that the water leakage of a gap between the water pipe and the joint sleeve is prevented.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a side cross-sectional view of an easy-to-maintain water purifier of the present application;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic diagram of the water purifier shown in FIG. 1 being turned over when it is dropped;

FIG. 4 is a schematic structural diagram of the water purifier shown in FIG. 1;

FIG. 5 is an enlarged view of a portion of FIG. 1 at B;

FIG. 6 is a schematic view of the jaw sleeve of FIG. 5;

FIG. 7 is a block diagram of the booster pump of FIG. 1;

FIG. 8 is a cross-sectional view of the booster pump of FIG. 7;

FIG. 9 is a schematic structural diagram of a top cover of the booster pump without a pump head in FIG. 7;

figure 10 is a cross-sectional view of the booster pump chamber and diaphragm of figure 7;

FIG. 11 is a schematic diagram of the arrangement of chambers in the booster pump of FIG. 1 in different numbers;

fig. 12 is a schematic diagram of the flow direction of the three-chamber pump and the four-chamber pump in fig. 11.

Description of reference numerals:

100. a housing; 110. a front panel; 120. a back panel; 130. a protective cover plate; 140. a water circuit board; 150. a water pipe; 200. a first filter element; 300. a booster pump; 310. a pump head; 320. a motor; 311. a pressure relief valve; 312. a water inlet piston; 313. a water outlet piston; 314. a valve seat; 315. a diaphragm; 316. an eccentric cam; 317. a motor shaft; 330. a water inlet; 340. a water outlet; 350. a chamber; 360. a water inlet hole; 370. a water outlet hole; 351. a water inlet cavity; 352. a water outlet cavity; 400. a second filter element; 500. a locking assembly; 510. a joint sleeve; 520. a jaw sleeve; 521. a first jaw; 522. a second jaw; 530. and (5) sealing rings.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," longitudinal, "" lateral, "" length, "" width, "" thickness, "" upper, "" lower, "" front, "" rear, "" left, "" right, "" vertical, "" horizontal, "" top, "" bottom, "" inner, "" outer, "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. The first feature being "under," "beneath," and "under" the second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

As shown in fig. 1 to fig. 2, the present application provides an easy-to-maintain water purifier, which includes a housing 100, and a first filter element 200, a booster pump 300, and a second filter element 400 sequentially disposed from top to bottom inside the housing 100, wherein distances between a gravity center O1 of the booster pump 300 and a gravity center of the first filter element 200 and between a gravity center of the second filter element 400 are a first distance D1 and a second distance D2, respectively, a distance between the gravity center O1 of the booster pump 300 and a center position of the housing 100 is a third distance D3, and the first distance D1 is smaller than the second distance D2 and larger than the third distance D3, so that the gravity center O2 of the complete machine deviates from the center position of the housing 100.

The casing 100 of the water purifier is generally in a cube shape, the first filter element 200, the booster pump 300 and the second filter element 400 are sequentially arranged in the casing 100 from top to bottom, wherein the first filter element 200 and the second filter element 400 are symmetrically arranged on two sides of the booster pump 300, and the centers of gravity of the first filter element 200 and the second filter element 400 are aligned on the central axis of the casing 100. If the center of gravity O1 of the booster pump 300 is aligned with the centers of gravity of the first filter element 200 and the second filter element 400 and is disposed on the central axis of the casing 100, the center of gravity of the whole machine is located at the central position of the casing 100, the water purifier thus disposed is stable when placed, but if the water purifier falls carelessly, the falling direction of the water purifier is random, and the surface of any side of the water purifier may land and collide, resulting in damage.

When a first distance D1 between the center of gravity O1 of the booster pump 300 and the center of gravity of the first filter element 200 is smaller than a second distance D2 between the center of gravity O1 of the booster pump 300 and the center of gravity of the second filter element 400, the booster pump 300 is integrally disposed up, so that the center of gravity of the whole machine is relatively deviated from the center position of the whole machine, and the center of gravity O2 of the whole machine is deviated to one side of the housing 100. In the transportation process, the gravity center O2 of the whole machine is placed towards the side and forwards. When the water purifier falls, the gravity center O2 of the whole machine is relatively close to the front, and the machine body can turn over forwards in the falling process, so that the gravity center O2 of the whole machine is deviated to the side and preferentially lands, and the falling direction of the water purifier is controlled.

Meanwhile, the third distance D3 between the center of gravity O1 of the booster pump 300 and the center of the casing 100 is smaller than the first distance D1, so as to control the offset of the center of gravity O1 of the booster pump 300 to be within a proper range, and avoid that the offset of the center of gravity O1 of the booster pump 300 is too large to cause the offset of the center of gravity O2 of the whole machine, which is unstable in placement.

So, through the focus O1 who sets up booster pump 300 and the focus of first filter core 200, the distance between the focus of second filter core 400 is first interval D1 and second interval D2 respectively, the distance between the focus O1 of booster pump 300 and the central point of casing 100 puts is third interval D3, first interval D1 is less than second interval D2 and is greater than the setting of third interval D3, realize that the focus O1 of booster pump 300 upwards is close to the focus of first filter core 200 relatively, can not too far away from the central point of whole casing 100 simultaneously, make when guaranteeing the purifier overall stability, with the focus of whole machine skew in the central point of casing 100 and put the setting. In the transportation, even the purifier takes place to fall, the complete machine also can fall towards the skew direction of focus, consequently can only carry out key protection package in the one side that purifier complete machine focus O2 deviates to when the packing, reduces packing cost by a wide margin.

As shown in fig. 2, in a preferred implementation manner of the easy-to-maintain water purifier, an offset of the center of gravity O2 of the whole water purifier in the horizontal direction is greater than an offset in the vertical direction.

It is understood that the center of gravity of the whole machine is deviated from the center position of the whole machine casing 100 in both the horizontal and vertical directions by adjusting the position of the booster pump 300. Meanwhile, the offset of the gravity center O2 of the whole machine in the horizontal direction is larger than that in the vertical direction, so that the gravity center of the whole machine cannot be over-leaned when the gravity center of the whole machine is inclined upwards, and the phenomenon that the whole machine is easy to topple due to over-leaned gravity center is avoided.

So, be greater than the ascending offset of vertical side through setting up the ascending offset of complete machine focus O2 in the horizontal direction for the focus of complete machine all has the skew in horizontal direction and vertical direction, makes to the complete machine control effect of falling the orientation better, has guaranteed simultaneously can not too much skew in vertical direction, avoids complete machine focus O2 to lean on too much and empty easily.

As shown in fig. 1, in a preferred implementation of the easy-to-maintain water purifier, the housing 100 includes a front panel 110 and a back panel 120, distances between the center of gravity O1 of the booster pump 300 and the front panel 110 and the back panel 120 are a fourth distance D4 and a fifth distance D5, respectively, and the fourth distance D4 is smaller than the fifth distance D5.

It is understood that the front panel 110 and the back panel 120 are disposed opposite to each other and located at the front and back sides of the casing 100, and the area of the front panel 110 and the back panel 120 is smaller than the area of the side panels and the upper and lower cover panels. When the water purifier is dropped carelessly, the dropping process follows the principle of minimum resistance due to the action of air resistance, namely, the part with the minimum air resistance always tends to land preferentially in the dropping process. Therefore, as shown in fig. 3, when the water purifier falls, the front panel 110 and the back panel 120 having a small frontal area (small air resistance) always rotate to the direction of the preferential landing during the falling process when the falling distance is sufficient regardless of the initial state of the falling. The fourth distance D4 is smaller than the fifth distance D5, so that the gravity center of the whole machine is close to the direction of the front panel 110, and the water purifier can rotate towards the direction of the front panel 110 when falling, so that the front panel 110 preferentially lands to control the falling direction of the water purifier.

So, through setting up casing 100 and including front panel 110 and backplate 120, the interval between focus O1 and front panel 110, backplate 120 of booster pump 300 is fourth interval D4 and fifth interval D5 respectively, and fourth interval D4 is less than fifth interval D5 for complete machine focus O2 is the front panel 110 setting of simple structure to the erroneous tendency, can overturn towards front panel 110 one side and land by front panel 110 earlier when the purifier falls carelessly, is convenient for the purifier and maintains after falling.

In a preferred implementation of the easy-to-maintain water purifier, a ratio of the fourth distance D4 to the fifth distance D5 is set within a range of 0 to 0.65.

It will be appreciated that the first filter cartridge 200 is an RO filter cartridge and the second filter cartridge 400 is a front cartridge. When the water purifier is in a transportation process, no water is injected into the first filter element 200, the booster pump 300 and the second filter element 400, and the weight of the booster pump 300 is greater than the weight of the first filter element 200 and the weight of the second filter element 400, so that after the position of the booster pump 300 is adjusted, the gravity center of the whole machine can be located at a preset position in the front upper part of the whole machine. And when the purifier is in the course of working, the inside water injection of first filter core 200, booster pump 300 and second filter core 400 for the weight of first filter core 200, booster pump 300 and second filter core 400 changes, because the inside water yield of first filter core 200, second filter core 400 is more, therefore first filter core 200 weight is greater than second filter core 400 weight after the water injection, second filter core 400 weight is greater than booster pump 300 weight, this has just led to the focus position of complete machine to change correspondingly. In order to enable the center of gravity of the water purifier after water injection to be shifted forwards and upwards so as to control the falling direction, the ratio of the fourth distance D4 to the fifth distance D5 is set within the range of 0 to 0.65, so that the center of gravity of the whole water purifier can be still positioned at the front upper position of the whole water purifier even if the weight of the first filter element 200 and the weight of the second filter element 400 are increased.

So, locate within 0 to 0.65 scope through the ratio that sets up fourth interval D4 and fifth interval D5 for no matter the purifier is under empty water transport state, still under the water injection operating condition, complete machine focus O2 all is in one side of panel 110 forward, and the purifier of being convenient for falls the back and maintains.

In a preferred implementation of the easy-to-maintain water purifier, as shown in fig. 4, a detachable protective cover 130 is provided outside the front panel 110.

It can be understood that, after the center of gravity O2 of the whole water purifier is offset toward the front panel 110, the water purifier will be overturned toward the front panel 110 when falling, so that the front panel 110 is firstly landed. On the other hand, the detachable protective cover 130 outside the front panel 110 can enhance the strength of one side of the front panel 110 to perform targeted falling protection. Meanwhile, even if the protective cover plate 130 is damaged due to falling, the protective cover plate can be conveniently and quickly detached and replaced, so that the water purifier can be conveniently maintained. The protective cover 130 and the exterior of the front panel 110 may be detachably mounted and connected by magnetic attraction, a snap, and the like.

So, be equipped with detachable protection cover plate 130 through setting up front panel 110 outside for the purifier overturns towards front panel 110 when falling, so that the outside detachable protection cover plate 130 of front panel 110 lands earlier, and protection cover plate 130 plays the cushioning guard action to the whole machine, even protection cover plate 130 damages, also can conveniently dismantle the change, the maintenance of falling of the purifier of being convenient for.

In a preferred implementation of the easy-to-maintain water purifier, as shown in fig. 1, the easy-to-maintain water purifier further includes a waterway plate 140 connected to the backplate 120, and a water pipe 150 connected between the waterway plate 140 and the booster pump 300, wherein the water pipe 150 is fixedly connected to the waterway plate 140 through a locking assembly 500.

It can be understood that the waterway plate 140 is provided with a waterway inside, the booster pump 300 is provided with a water inlet 330 and a water outlet 340, and the water inlet 330 and the water outlet 340 are respectively connected with the waterway plate 140 through the water pipe 150, so that the water pipe 150 is communicated with the waterway inside the waterway plate 140. The waterway communication inside the waterway plate 140 is also respectively communicated with the first filter element 200 and the second filter element 400, and the first filter element 200, the booster pump 300 and the second filter element 400 are mutually communicated through the waterway plate 140.

The water pipe 150 is in a relatively tense state as a whole, and the locking assembly 500 fixes the joint of the water pipe 150 and the waterway plate 140. When the water purifier falls off carelessly, the water purifier turns forwards to enable the front panel 110 to land firstly because the gravity center O2 of the water purifier is arranged towards the front panel 110. At the moment of landing, the booster pump 300 is subjected to an inertial force toward the front panel 110 to generate a movement tendency toward the front panel 110. At this time, the water pipe 150 may pull the booster pump 300 from the rear, limit the maximum vibration displacement of the booster pump 300, and prevent the booster pump 300 from being detached from the installation position and impacting the front panel 110 from the inside of the water purifier, thereby damaging the front panel 110. Even if the impact force locking assembly 500 is damaged, the water purifier can be conveniently detached and replaced, so that the water purifier can be conveniently maintained.

Thus, by arranging the water purifier further comprising the waterway plate 140 connected with the back plate 120 and the water pipe 150 connected between the waterway plate 140 and the booster pump 300, wherein the water pipe 150 is fixedly connected with the waterway plate 140 through the locking assembly 500, when the water purifier falls and is landed on the ground by the front panel 110, the booster pump 300 is subjected to an inertial force towards the front panel 110, at this time, the water pipe 150 can exert a protective acting force for pulling the booster pump 300 in a reverse direction, the booster pump 300 is prevented from impacting the front panel 110 and other parts from the inside under the action of the inertial force, the locking assembly 500 is used for preventing the water pipe 150 from being separated from the waterway plate 140 when pulling the booster pump 300, and the overall reliability is improved.

In a preferred implementation of a water purifier that is easy to maintain, as shown in fig. 5, the locking assembly 500 includes a connector sleeve 510 connected to the waterway plate 140, and a jaw sleeve 520 connected to an end of the water pipe 150, the jaw sleeve 520 being inserted into the connector sleeve 510 to communicate the water pipe 150 with the waterway inside the waterway plate 140.

It will be appreciated that a cavity is formed within adapter sleeve 510, and after adapter sleeve 510 is coupled to waterway plate 140, the cavity within adapter sleeve 510 is in communication with the waterway within waterway plate 140. The jaw sleeve 520 is sleeved on the end of the water pipe 150, and when the water pipe 150 is connected, the jaw sleeve 520 together with the water pipe 150 is inserted into the joint sleeve 510, so that the water pipe 150 is communicated with the waterway plate 140.

In this way, by providing the locking assembly 500 including the joint sleeve 510 connected to the waterway plate 140 and the jaw sleeve 520 connected to the end of the water pipe 150, the jaw sleeve 520 is inserted into the joint sleeve 510 to communicate the water pipe 150 with the waterway inside the waterway plate 140, so that the water pipe 150 is fixedly connected to the joint sleeve 510 on the waterway plate 140 through the jaw sleeve 520, and the reliability of connection of the water pipe 150 is improved.

In a preferred implementation of a water purifier that is easy to maintain, adapter sleeve 510 is rotatably coupled to outlet 340 of waterway plate 140 to adjust the orientation of adapter sleeve 510.

In this manner, by providing adapter sleeve 510 rotatably coupled to outlet 340 of waterway plate 140, the orientation of adapter sleeve 510 can be adjusted, such that water tube 150 can rotate relative to waterway plate 140 during installation, thereby facilitating assembly.

In a preferred implementation of the easy-to-maintain water purifier, as shown in fig. 5 to 6, the inner and outer walls of the jaw sleeve 520 are respectively provided with a first jaw 521 and a second jaw 522, the first jaw 521 is clamped on the outer wall of the water pipe 150, and the second jaw 522 is matched with a slot on the inner wall of the joint sleeve 510.

The jaw sleeve 520 is sleeved on the outer wall of the end portion of the water pipe 150, the first jaws 521 are provided with a plurality of barbs surrounding the inner wall of the jaw sleeve 520, and the plurality of first jaws 521 are pressed to clamp the outer wall of the water pipe 150, so that the jaw sleeve 520 is fixedly connected with the water pipe 150. The second jaw 522 has a plurality ofly and encircles jaw sleeve 520's outer wall setting, and the inner wall of joint sleeve 510 corresponds is equipped with a plurality of draw-in grooves, and jaw sleeve 520 is the elastic setting. When the jaw sleeve 520 is inserted into the joint sleeve 510, the second jaws 522 are firstly retracted inward to enter the joint sleeve 510, and then opened and respectively fastened and fixed with the slots, so as to realize the connection and fixation of the jaw sleeve 520 and the joint sleeve 510. The second jaw 522 and the slot form a limit in the reverse direction of the jaw sleeve 520, so as to improve the tensile strength of the locking assembly 500. The water pipe 150 is prevented from being separated from the waterway plate 140, and sufficient tension is provided for the booster pump 300 when the water purifier falls.

In this way, the first claws 521 and the second claws 522 are respectively arranged on the inner wall and the outer wall of the claw sleeve 520, the first claws 521 are clamped on the outer wall of the water pipe 150, and the second claws 522 are matched with the clamping grooves on the inner wall of the joint sleeve 510, so that the claw sleeve 520 is clamped and fixed on the water pipe 150 through the first claws 521, and is clamped and fixed on the joint sleeve 510 through the second claws 522, thereby fixedly connecting the water pipe 150 and the water circuit board 140.

In a preferred implementation of an easy-to-maintain water purifier, as shown in fig. 5, a sealing ring 530 is provided between the water pipe 150 and the adapter sleeve 510.

It will be appreciated that a sealing ring 530 is disposed around the outer wall of the water tube 150 and adjacent to the end of the jaw sleeve 520 to simultaneously seal the gaps between the water tube 150 and the adapter sleeve 510 and between the water tube 150 and the jaw sleeve 520.

In this way, by providing the packing 530 between the water pipe 150 and the joint socket 510, water leakage from the gap between the water pipe 150 and the joint socket 510 is prevented.

In adjusting the positions of the booster pumps 300 to offset the center of gravity O2 of the entire machine, the weight of the booster pumps 300 themselves is a large factor, and the weight of the booster pumps 300 is determined by the types thereof, wherein the weight difference is large particularly among the booster pumps 300 having different numbers of chambers 350. The booster pump 300 functions to increase the pressure of the water stream so that the high-pressure water stream can permeate the RO membrane. Due to the need for a better user experience, there are higher requirements on the flux of the RO membrane and the output flow rate of the booster pump 300, as well as the noise of the booster pump 300. However, the main usage scenario of the reverse osmosis water purifier is the usage under kitchen, and the compact space under kitchen requires the overall volume of the water purifier not to be too large, so in the existing volume framework of the booster pump 300, the existing technology will usually increase the number of water inlet chambers of the booster pump 300 without changing the volume of the pump head 310, for example, a four-chamber pump, a five-chamber pump or a six-chamber pump is adopted to increase the water outlet flow rate of the booster pump 300.

However, when the booster pump 300 is actually used, if the number of pump cavities is not matched with the flow rate, the multi-cavity 350 is prone to have a low flow rate or a high flow rate and few chambers 350, so that internal water flow or unsmooth opening and closing of a valve can be generated, a large operation noise is generated, and the use experience of a user is reduced. Therefore, it is necessary to select the booster pumps 300 having the appropriate number of chambers 350 to balance the flow rate and noise of the booster pumps 300, thereby determining the weight of the booster pumps 300 to adjust the position of the center of gravity of the whole machine.

As shown in fig. 7 to 9, the booster pump 300 includes a pump head 310, a motor 320 and a motor shaft 317, the pump head 310 is composed of a pressure relief valve 311, a water inlet piston 312, a water outlet piston 313, a valve seat 314, a diaphragm 315 and an eccentric cam 316, and the pump head 310 is provided with a water inlet 330 and a water outlet 340. The diaphragm 315 is divided into a plurality of chambers 350 by the valve seat 314, and the chambers 350 form a plurality of sealed spaces under the isolation of the diaphragm 315, so as to form a plurality of water flow cavities, wherein each water flow cavity comprises an inlet cavity 351 and an outlet cavity 352. The water inlet cavity 351 is provided with a water inlet hole 360, the water outlet cavity 352 is provided with a water outlet hole 370, and the water inlet piston 312 and the water outlet piston 313 are arranged on the valve seat 314 and used for controlling the opening and closing of the water inlet hole 360 and the water outlet hole 370. The diaphragm 315 is fixed to the eccentric cam 316 and is deformed by the motor shaft 317 to generate water suction and water discharge power.

The operating principle of the booster pump 300 is as follows: the motor 320 drives the eccentric cam 316 to rotate, and due to the eccentric angle between the eccentric cam 316 and the motor shaft 317, the eccentric cam 316 is twisted when the motor 320 drives the eccentric cam 316 to rotate, so that the diaphragm 315 generates axial push-pull force, the push-pull force acts on the water inside the chamber 350, the volume of the chamber 350 changes, so that the water inlet piston 312 and the water outlet piston 313 are driven to open or close periodically, the water flows into the chamber 350 from the water inlet hole 360, and then flows out of the booster pump 300 from the water outlet hole 370 (the water flow direction is shown by the arrow in fig. 8), so that the water is boosted.

As shown in FIG. 10, the flow rate of the booster pump 300 depends on the volume change of the inlet chamber 351 or the outlet chamber 352 and the number of changes per unit time. Therefore, taking the stroke of the diaphragm 315 in a single chamber 350 cycle as an example, taking P1 as the position of the diaphragm 315 corresponding to the bottom dead center, when the eccentric cam 316 rotates to a certain angle, the upper point P1 of the diaphragm 315 swings to P2, and then swings downward, and the periodic action is repeated. During a single-period process of swinging the diaphragm 315 from the point P1 to the point P2, the deformation of the diaphragm 315 is ignored, a section of swinging path of the diaphragm 315 is an arc, and the changed volume of the chamber 350 is the volume swept by the arc path formed by the swinging of the diaphragm 315.

In the above equation,. DELTA.V is the volume of change,. Sigma.is the eccentric angle of the eccentric cam 316, r is the diameter of the oscillating portion of the diaphragm 315, and d is the distance from the center of the oscillating portion of the diaphragm 315 to the motor shaft 317. The flow rate of the entire pump can be expressed as:

q _v ＝nkΔV＝nkσπr ² d

in the above formula, q _v Is the flow rate (mL/min), n is the rotational speed (r/min), and k is the number of chambers 350.

It can be seen that the flow rate of the reverse osmosis membrane pump is related to the diameter r of the oscillating portion of the membrane 315 (i.e., the diameter of the inlet chamber 351), the eccentric angle σ of the eccentric cam 316, and the distance d of the oscillating portion of the membrane 315 from the axis of the motor shaft 317 (i.e., the distance from the inlet chamber 351 to the axis of the motor shaft 317). In a general reverse osmosis membrane pump, considering the influence of the deformation amount of the membrane 315 on the life thereof, the design angle of the eccentric cam 316 is limited, and generally tan σ is less than or equal to 0.1. The flow rate is primarily dependent upon the number of chambers 350, the diameter of the inlet chamber 351, and the distance of the inlet chamber 351 from the center of the motor shaft 317.

At present, the motors 320 adopted by the large-flux water purifier (the pure water flow is 400-2000 gallons) are all outer diameters

The standard of (2) have brush motor, therefore pump head 310 external diameter can not be too big, too big can lead to needing great complete machine space when booster pump 300 installs to pump head 310 is too big to be unfavorable for whole mobile balance stability, and the undersize then leads to the flow little, and general case pump head 310 external diameter value is in the whole mobile balance stability of doing all can, and undersize then leads to the flow little

Within (c). Thus, the diameter of the circle formed by the outermost edges of the plurality of inlet cavities 351 in the pump head 310 is slightly smaller than that of the pump head 310, and is generally selected to be smaller than that of the circle formed by the outermost edges of the plurality of inlet cavities 351 in the pump head 310

Within the range of (a).

As shown in fig. 11, a schematic layout of the pump head 310 from two chambers to eight chambers is shown in fig. 11. Limited by the outer diameter of the pump head 310, as the internal chamber 350 of the pump head 310 increases, the volume of the single inlet chamber 351 decreases, the volume of the outlet chamber 352 increases, the distance from the inlet chamber 351 to the central axis of the motor 320 increases, and the flow rate of the booster pump increases. According to actual arrangement, compared with four cavities and three cavities, the radius ratio r3: r4 of the water inlet cavity 351 is generally 1.1-1.2, and the ratio of the radius of the five cavities to the four cavities, the ratio of the radius of the six cavities to the radius of the five cavities is 1.1-1.2. The distance d from the water inlet cavity 351 to the central axis of the motor 320 also follows a similar proportional relationship, i.e., the ratio of the distance d4 from the water inlet cavity 351 to the central axis of the motor 320 is that for four cavities compared with three cavities: d3 is generally 0.90-0.95, and so on.

Thus in the flow equation above: q. q of _v ＝nkΔV＝nkσπr ² In the step d, the step (c),

when the rotating speed n and the eccentric wheel eccentric angle sigma of the booster pump 300 are fixed, the flow q which can be achieved by the four cavities is constant _v3 And three cavity flow q _v4 The ratio of (A) to (B) should be: q. q.s _v4 ：q _v3 Q is between 1.3 and 1.4, and so on _v5 ：q _v4 ＝1.2～1.3，q _v6 ：q _v5 ＝1.1～1.2，q _v7 ：q _v6 ＝1.1～1.15，q _v8 ：q _v7 ＝1.1～1.15。

The speed of the booster pump 300 is limited by the life of the diaphragm 315 and the life of the motor 320, typically in the range of 1000r/min to 1500r/min, so that the flow rates achievable when using the three-chamber booster pump 300 are calculated from the above flow equation:

when the rotating speed is 1000r/min, q is _v3 ＝1000*3*σ*πr ² d≈2.0L/min

When the rotating speed is 1500r/min, q is _v3 ＝1500*3*σ*πr ² d≈3.0L/min

When the flow rate of the booster pump 300 reaches 2.0L/min, according to the ratio of 2: the conversion of the wastewater ratio of 1 (reaching the optimal pre-membrane pressure of 0.7 MPa-0.8 MPa) can meet the pure water flow of 400G, and when the flow reaches 3.0L/min, the pure water flow of 700G can be met, so that when the required pure water flow is 400G-700G, a three-cavity pump can be adopted.

From the above-mentioned relationship of the ratio between the flows of the different chambers 350, the following conclusions can be drawn:

when the flow rate of the booster pump 300 is between 3.0 and 4.0L/min (700G to 1000G), a four-cavity pump can be adopted; when the flow rate of the booster pump 300 is 3.6-4.8L/min (900-1300G), a five-cavity pump can be adopted; when the flow rate of the booster pump 300 is 4.5-5.6L/min (1200G-1500G), a six-cavity pump can be adopted, when the flow rate of the booster pump 300 is 5.2-6.5L/min (1400G-1800G), a seven-cavity pump can be adopted, and when the flow rate of the booster pump 300 is 6.0-7.2L/min (1600G-2000G), an eight-cavity pump can be adopted.

In summary, the proportional relation between the chamber 350 of the booster pump 300 and the flow rate is best within the range of 0.7-1.0, when the proportional relation is too large, the water flow in the chamber 350 is not filled sufficiently, gas exists, cavitation noise is generated during operation, and when the proportional relation is too small, the operating pressure of the booster pump 300 is too large, the temperature rise is too high, and the service life of the booster pump is shortened.

In addition, in the process from the two-cavity pump to the eight-cavity pump, because more cavities 350 need to be arranged, the radius of the water inlet cavity 351 is gradually reduced, and the radius of the water outlet cavity 352 is gradually increased, so that the radius of the water inlet cavity 351 is equivalent to that of the water outlet cavity 352 when the four-cavity pump is adopted, and on the basis of the radius, when the number of the cavities is reduced, the radius of the water inlet cavity 351 is larger than that of the water outlet cavity 352, and when the number of the cavities is increased, the radius of the water inlet cavity 351 is smaller than that of the water outlet cavity 352. Because business turn over discharge and business turn over water chamber 352 size become positive correlation, the ratio of intake antrum 351 radius R and play water chamber 352 radius R needs to be in certain extent, and the undersize can lead to the inflow not enough, and intake valve opens and shuts the radius and lead to opening and shutting the difficulty for a short time, and too big can lead to the outlet valve to open and shut the radius for a short time, needs bigger pressure when opening and shutting, influences its flow. Therefore, the optimal radius R of the inlet cavity 351/radius R of the outlet cavity 352 ranges from 0.5 to 1.5, so that the chamber 350 is arranged reasonably.

Secondly, as shown in fig. 10, the value of the product d σ of the distance d from the water inlet cavity 351 of the booster pump 300 to the center line of the motor shaft 317 and the eccentric angle σ should satisfy a certain range, an excessively large amplitude will cause an excessively large amplitude of the diaphragm 315 during each oscillation, which affects the service life of the diaphragm 315, an excessively small amplitude will cause a small single oscillation amount, and an excessively small flow rate, which has an optimal value range of 45 to 55.

Finally, as shown in FIG. 12, the odd number chambers have a larger flow pulsation rate than the even number chambers, and when the flow rate is greater than or equal to 700G, the even number chambers are preferred. Specifically, the operation characteristics of the three chambers and the four chambers of the pump head 310 of the booster pump 300 are compared and indicated schematically, assuming that the rotation direction of the motor 320 is counterclockwise, the highest point of the eccentric cam 316 rotates to the direction of the water inlet chamber a at a certain moment, that is, the position of the water inlet chamber a is the highest point of the upward deflection of the diaphragm 315, at this time, the water inlet chamber a has a downward deflection trend (shown by an inward graphic symbol in the direction vertical to the screen in the figure), and the water inlet chamber b has an upward deflection trend (shown by an outward graphic symbol in the direction vertical to the screen in the figure 799679) because the highest point is equivalent to counterclockwise rotation to the water inlet chamber b, and by analogy, the water inlet chamber c has a downward deflection trend, and the water inlet chamber d has an upward deflection trend.

In the pump head 310 of the three-cavity pump, 2 water inlet cavities 351 deflect upwards, 1 water inlet cavity 351 deflects downwards, the deflection force is unbalanced, the dynamic balance performance is poor, and the pump head 310 is prone to large-amplitude vibration. In the pump head 310 of the four-chamber pump, the 2 water inlet chambers 351 deflect downwards, the deflection force is balanced, the whole excitation force of the pump head 310 is small, and the noise is low. Therefore, even cavity pumps are suggested for large-flow pumps with the pure water flux more than or equal to 700G.

It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Although the present application has been described in detail with reference to preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present application.

Claims (10)

1. The utility model provides an easy purifier of maintaining, includes the casing and first filter core, booster pump and the second filter core that the inside top-down of casing set gradually, its characterized in that:

the focus of booster pump with the focus of first filter core the distance between the focus of second filter core is first interval and second interval respectively, the focus of booster pump with distance between the central point of casing puts is the third interval, first interval is less than the second interval just is greater than the third interval sets up, so that the focus of purifier deviate from in the central point of casing puts.

2. The easy-to-maintain water purifier as recited in claim 1, wherein the center of gravity of the water purifier is offset in the horizontal direction more than in the vertical direction.

3. The easy-to-maintain water purifier as recited in claim 1, wherein the housing includes a front panel and a back panel, and the distances between the center of gravity of the booster pump and the front panel and the back panel are a fourth distance and a fifth distance, respectively, and the fourth distance is smaller than the fifth distance.

4. The easy-to-maintain water purifier as recited in claim 3, wherein a ratio of the fourth interval to the fifth interval is set within a range of 0 to 0.65.

5. The easy-to-maintain water purifier as recited in claim 3, wherein a detachable protective cover plate is provided outside the front panel.

6. The easy-to-maintain water purifier as claimed in claim 3, further comprising a waterway plate connected to the back plate, and a water pipe connected between the waterway plate and the booster pump, wherein the water pipe is fixedly connected to the waterway plate via a locking assembly.

7. The easy-to-maintain water purifier according to claim 6, wherein the locking assembly comprises an adapter sleeve connected with the waterway plate, and a jaw sleeve connected with the end of the water pipe, the jaw sleeve is inserted into the adapter sleeve to communicate the water pipe with the waterway plate inside.

8. The easy-to-maintain water purifier as claimed in claim 7, wherein said adapter sleeve is rotatably connected to the water outlet of said water circuit board to adjust the orientation of said adapter sleeve.

9. The easy-to-maintain water purifier as claimed in claim 7, wherein the inner and outer walls of the jaw sleeve are respectively provided with a first jaw and a second jaw, the first jaw is clamped on the outer wall of the water pipe, and the second jaw is matched with the clamping groove on the inner wall of the joint sleeve.

10. The easy-to-maintain water purifier as recited in claim 7, wherein a sealing ring is disposed between said water pipe and said adapter sleeve.

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