CN213924271U - Filter element assembly and water purifier - Google Patents

Abstract

The utility model provides a filter element group spare and purifier. The filter element group spare is including straining the shell, holding filter core and the pressure detector in straining the shell, strains the shell and has water inlet and delivery port, strains the shell still have with the filter shell opening of water inlet intercommunication, pressure detector sets up on straining the shell, pressure detector's pressure receiving terminal and strain shell opening intercommunication. The utility model discloses a filter element group spare is because it self has pressure detector, therefore filter element group spare oneself can detect system water pressure to send the signal of telecommunication to the control panel of water demand equipment (for example purifier), the control panel can make the booster pump start-up and/or open the solenoid valve of intaking of purifier based on this signal of telecommunication for example. Therefore, the long-time idle running of the booster pump and/or the long-time anhydrous work of the reverse osmosis filter element can be avoided, and the service lives of the booster pump and the reverse osmosis filter element are prolonged.

Description

Filter element assembly and water purifier

Technical Field

The utility model relates to a technical field of aqueous cleaning specifically, relates to a filter element group spare and purifier that has it.

Background

With the pursuit of quality of life by the public, the quality of drinking water is beginning to attract much attention. Water purifiers are becoming more popular because they produce fresher, more sanitary, and safer water.

Taking a reverse osmosis water purifier as an example, the filter element therein is generally a core component of the water purifier and is also an important pressure-bearing component in the water purifier. However, there are two situations that result in a filter cartridge that operates without pressure. One is that the water inlet pressure is too low, which can cause the booster pump to idle; alternatively, no water is present in the reverse osmosis membrane, resulting in no water being discharged.

The long-time idle running of the booster pump can shorten the service life of the booster pump. And the filter element is in a water-free working state for a long time, so that the service life of the reverse osmosis membrane is shortened, and even the filter element is scrapped.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems of the prior art, according to one aspect of the present invention, a filter element assembly is provided. The filter element group spare is including straining the shell, holding filter core and the pressure detector in straining the shell, strains the shell and has water inlet and delivery port, strains the shell still have with the filter shell opening of water inlet intercommunication, pressure detector sets up on straining the shell, pressure detector's pressure receiving terminal and strain shell opening intercommunication.

When the water pressure of the water inlet detected by the pressure detector is low, no water or a small amount of water at the water inlet is indicated. At this time, if the water-requiring equipment (such as a water purifier) still works, energy waste can be caused. For some water-requiring equipment (such as a reverse osmosis water purifier), if the equipment is still operated, the booster pump can be operated without water, and the booster pump is easy to damage; meanwhile, high-pressure gas is pumped into the reverse osmosis filter element along with the booster pump, so that the reverse osmosis filter element can work without water, and the waste of the reverse osmosis filter element is caused.

The utility model discloses a filter element group spare is because it self has pressure detector, therefore filter element group spare oneself can detect system water pressure to send the signal of telecommunication to the control panel of water demand equipment (for example purifier), the control panel can make the booster pump start-up and/or open the solenoid valve of intaking of purifier based on this signal of telecommunication for example. Therefore, the long-time idle running of the booster pump and/or the long-time anhydrous work of the reverse osmosis filter element can be avoided, and the service lives of the booster pump and the reverse osmosis filter element are prolonged. In addition, the pressure detector is integrated to the filter element assembly, so that the situation that the pressure detector is arranged outside the filter element assembly and is connected with the filter element assembly through a pipeline can be avoided, the length of the pipeline and the number of pipeline joints can be effectively reduced, and the structural size of water-requiring equipment (such as a water purifier) is smaller so as to be suitable for narrow space; and the water leakage point is correspondingly reduced, and the water-requiring equipment (such as a water purifier) is safer and more reliable.

Illustratively, the pressure detector comprises a low pressure switch. The low voltage switch may have a preset pressure threshold. When the filter element assembly filters water, if the water pressure of the water inlet is greater than the preset pressure threshold value of the pressure detector, the pressure detector sends an electric signal, and the water demand equipment (such as a water purifier) can control, for example, the water inlet electromagnetic valve to be opened, the booster pump to be started and the like based on the electric signal, so that the water demand equipment (such as the water purifier) starts to work. Therefore, the low-voltage switch has the advantages of simple control and the like.

Illustratively, the pressure detector includes: the shell assembly is provided with a shell opening and is connected to the filter shell; an elastic partition covering the housing opening and forming a pressure receiving end; and a trigger switch disposed within the housing assembly, the trigger switch being triggered when the resilient partition is deformed into the housing assembly to a predetermined extent. The pressure detector with the structure has the advantages of simple structure, simple control, reliable performance, low production cost and the like.

Illustratively, the pressure detector further includes a movable member disposed within the housing assembly between the trigger switch and the resilient partition member, the movable member being connected to the resilient partition member, the movable member being movable between an initial position and a trigger position with deformation of the resilient partition member, the movable member being in the trigger position to trigger the trigger switch when the resilient partition member is deformed to a predetermined extent. Since the elastic partition member is deformed by the water pressure, the deformed elastic partition member has a substantially conical-like structure, so that when the elastic partition member is deformed to a predetermined extent, the area of a portion where the elastic partition member can trigger the trigger switch is small, which may result in low stability of the elastic partition member triggering the trigger switch. And since the elastic partition itself has elasticity, there may occur a case where the trigger switch forces the elastic partition to be reversely deformed without being triggered. Through setting up the moving part, can ensure that elastic separation spare warp can not reduce the area of the part that triggers trigger switch, trigger switch through the moving part of rigidity moreover, can further ensure that pressure detector's stability is higher.

Illustratively, the housing assembly includes a guide member that guides movement of the moveable member between the initial position and the triggered position. Through setting up the guide member, can ensure that the moving part removes in the stroke of expectation, ensure that pressure detector's stability is higher.

The guide member is illustratively in the form of a sleeve and the movable member is movable within the guide member along an inner wall of the guide member. Therefore, the guide piece and the movable piece are simple in structure and low in production cost.

Exemplarily, the shell component is provided with a limiting part, and the movable part abuts against the limiting part when being located at the triggering position. Through setting up spacing portion, can prevent that the water pressure of water inlet department when too big, the moving part strikes and destroys trigger switch, causes trigger switch to damage.

Illustratively, the edge of the resilient spacer is clamped between the guide and the filter housing, the housing assembly further comprises a gland coupled to the filter housing, the guide is clamped between the filter housing and the gland, and the trigger switch is disposed within the gland. The fixing of the elastic partition is completed while the pressing cover is coupled to the filter housing. Therefore, in actual production, the assembly is convenient and the time is saved. In addition, the shell assembly is arranged to be of a split structure comprising the guide piece and the gland, so that the requirement on machining precision can be reduced, and the cost is reduced.

Illustratively, an edge of the resilient partition is clamped between the housing assembly and the filter housing. During installation, the resilient spacer and the guide are placed in sequence on the filter housing and then clamped by the gland. In this way, the structure of the filter element assembly can be simplified. Alternatively, the fixation of the elastic partition may also be independent of the filter housing. That is, all of the components of the pressure detector may be formed as a unitary piece prior to mounting the pressure detector to the filter housing and then mounted directly to the filter housing. In this case, the housing assembly may further include an annular upper cover, which is snapped onto the guide, thereby fixing the edge of the elastic partition between the upper cover and the guide, for example.

Illustratively, the trigger switch includes one or more of a micro-switch and a proximity switch. The micro switch and the proximity switch are commonly used, so the price is relatively low, the shelf life is guaranteed, and the maintenance and replacement cost is low.

Illustratively, a water inlet and a water outlet are arranged on the mounting head of the filter shell, and a pressure detector is arranged on the mounting head. By arranging the pressure detector on the mounting head and reasonably arranging the structure of the filter base, it is possible to complete the mounting and simultaneously connect the circuit of the two. In this way, the assembly process of the filter element assembly can be simplified.

According to another aspect of the utility model, a water purifier is provided. The purifier includes any kind of filter element group spare above-mentioned.

A series of concepts in a simplified form are introduced in the disclosure, which will be described in further detail in the detailed description section. The summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 is a perspective view of a filter cartridge assembly according to an exemplary embodiment of the present invention;

FIG. 2 is an exploded view of the filter element assembly shown in FIG. 1;

FIG. 3A is a cross-sectional view of the filter cartridge assembly shown in FIG. 1;

FIG. 3B is an enlarged partial view of the filter element assembly shown in FIG. 3A;

FIG. 4 is a cross-sectional perspective view of the filter element assembly shown in FIG. 1;

FIG. 5 is a cross-sectional exploded view of the filter cartridge assembly shown in FIG. 1;

fig. 6 is a cross-sectional, exploded view of a filter element assembly according to another exemplary embodiment of the present invention; and

fig. 7 is a schematic water path diagram of a water purifier according to an exemplary embodiment of the present invention.

Wherein the figures include the following reference numerals:

100. a filter element assembly; 200. a filter shell; 210. a water inlet; 211. opening the filter shell; 220. a water outlet; 300. a filter element; 310. a water inlet end; 320. a PP cotton filter element; 330. a front activated carbon filter element; 340. a reverse osmosis filter element; 350. a post-positioned active carbon filter element; 500. a pressure detector; 510. a housing assembly; 511. a housing opening; 512. a guide member; 512a, a limiting part; 513. a gland; 520. an elastic separator; 530. a trigger switch; 550. and a movable member.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present invention. One skilled in the art, however, will understand that the following description illustrates only a preferred embodiment of the invention and that the invention may be practiced without one or more of these details. In addition, some technical features that are well known in the art are not described in detail in order to avoid obscuring the present invention.

In accordance with one aspect of the present invention, a filter element assembly 100 is provided, as shown in fig. 1-2, 3A-3B, and 4-6. The cartridge assembly 100 may be applied to various water purifiers, as shown in fig. 7, in which arrows schematically show the flow direction of water in the water purifier. In the embodiment shown in the drawings, a plurality of filter elements are provided in the water purifier, and the filter element assembly 100 cooperates with other filter elements to prepare purified water meeting the user's requirements. In other embodiments not shown, the water purifier may have only the filter element assembly 100 therein. In addition, according to the utility model discloses another aspect still provides a purifier. The water purifier includes, but is not limited to, a household water purifier, a central water purifier, etc. The filter element assembly can also be applied to other water-requiring equipment if necessary.

As shown in fig. 1-2, 3A-3B, and 4-6, the cartridge assembly 100 can include a filter housing 200, a filter cartridge 300, and a pressure detector 500. The cartridge 300 can be housed within the filter housing 200. Filter element 300 can be any type of filter element known in the art or that may occur in the future, including, but not limited to, a pre-filter element (e.g., a PP cotton filter element and/or a pre-activated carbon filter element), a post-filter element (e.g., a post-activated carbon filter element), a reverse osmosis filter element, and the like. Wherein the reverse osmosis cartridge may comprise only a reverse osmosis cartridge. Optionally, the reverse osmosis filter element may further include any one or more of a pre-filter element (e.g., a PP cotton filter element and/or a pre-activated carbon filter element), a post-filter element (e.g., a post-activated carbon filter element), and a scale inhibitor, in addition to the reverse osmosis filter element. Accordingly, the water purifier having the filter cartridge assembly 100 may comprise a reverse osmosis water purifier or any other suitable water purifier.

In the embodiment shown in the figures, filter element 300 comprises a PP cotton filter element 320, a pre-activated carbon filter element 330, a reverse osmosis filter element 340, and a post-activated carbon filter element 350. Wherein, the PP cotton filter element 320 is arranged at the outermost side of all the filter elements; the front activated carbon filter element 330 and the reverse osmosis filter element 340 are arranged on the inner side of the PP cotton filter element 320, and the front activated carbon filter element 330 and the reverse osmosis filter element 340 are arranged end to end along the axial direction of the filter element assembly 100; the rear activated carbon filter element 350 is disposed inside the reverse osmosis filter element 340. Raw water enters the filter element assembly 100 through the water inlet end 310 and then flows out after being filtered by the PP cotton filter element 320, the front activated carbon filter element 330, the reverse osmosis filter element 340 and the rear activated carbon filter element 350 in sequence. The water inlet end 310 refers to a position where raw water enters the filter element 300. The water inlet end 310 may be an opening in the filter element 300, and may be a side or end of the filter element 300, and the specific configuration of the water inlet end 310 is related to the configuration of the filter element 300. In addition, for composite filter elements, the structure thereof and the variety of the composite filter elements, the reasonable arrangement can be selected by those skilled in the art according to the needs, and the embodiment shown in the figures is merely exemplary, and therefore, will not be described in further detail herein.

The filter housing 200 may have a water inlet 210 and a water outlet 220. As known to those skilled in the art, raw water may enter the filter housing 200 through the water inlet 210 and then enter the filter cartridge through the water inlet end 310 of the filter cartridge 300. The filter housing 200 may be provided with a filter housing opening 211. The filter housing opening 211 may be in communication with the water inlet end 310.

The pressure detector 500 may be disposed on the filter housing 200 by any means such as welding, bonding, snapping, etc. The pressure receiving end of the pressure detector 500 may be in communication with the filter housing opening 211. In this way, the pressure receiving end of the pressure detector may communicate with the water inlet 210. The pressure detector may be used to detect the water pressure of the water inlet 210. The pressure detector may employ various types of pressure detectors known in the art or that may occur in the future, such as pressure sensors, pressure relays, and the like. Preferably, the pressure detector may comprise a low pressure switch. The low-voltage switch has the advantages of simple structure, simple operation, low cost and the like.

When the water pressure at the water inlet 210 detected by the pressure detector 500 is low, it indicates that there is no water or only a small amount of water at the water inlet 210. At this time, if the water-requiring equipment (such as a water purifier) still works, energy waste can be caused. For some water-requiring equipment (such as a reverse osmosis water purifier), if the equipment is still operated, the booster pump can be operated without water, and the booster pump is easy to damage; meanwhile, high-pressure gas is pumped into the reverse osmosis filter element along with the booster pump, so that the reverse osmosis filter element can work without water, and the waste of the reverse osmosis filter element is caused.

Therefore, the utility model discloses a filter element group spare 100 is because it self has pressure detector 500, therefore filter element group spare 100 self can detect system water pressure to send the signal of telecommunication to the control panel of water demand equipment (for example purifier), the control panel can make the booster pump start and/or open the water solenoid valve of purifier based on this signal of telecommunication for example. Therefore, the long-time idle running of the booster pump and/or the long-time anhydrous work of the reverse osmosis filter element can be avoided, and the service lives of the booster pump and the reverse osmosis filter element are prolonged. In addition, by integrating the pressure detector 500 into the filter element assembly 100, the situation that the pressure detector is arranged outside the filter element assembly 100 and is connected with the filter element assembly 100 by using a pipeline can be avoided, so that the length of the pipeline and the number of pipeline joints can be effectively reduced, and the structural size of water-requiring equipment (such as a water purifier) is smaller so as to be suitable for a narrow space; and the water leakage point is correspondingly reduced, and the water-requiring equipment (such as a water purifier) is safer and more reliable.

As known to those skilled in the art, some pressure detectors 500, such as low pressure switches, may have a preset pressure threshold. When the filter element assembly 100 filters water, if the water pressure of the water inlet 210 is greater than the preset pressure threshold of the pressure detector 500, the pressure detector 500 sends an electrical signal, and the water demand equipment (e.g., a water purifier) can control, for example, the water inlet solenoid valve to open, the booster pump to start, and the like based on the electrical signal, so that the water demand equipment (e.g., the water purifier) starts to operate. Some pressure sensors 500 have only the capability of acquiring water pressure, such as a conventional pressure sensor, in which case a control board of the water-requiring apparatus (e.g., a water purifier) is required to work in cooperation with the pressure sensor, or an additional control board is provided for the pressure sensor. Specifically, the pressure sensor may send a detected pressure signal indicative of the magnitude of the pressure to the control board, and the control board determines when to control, for example, the water inlet solenoid valve to be opened, the booster pump to be started, and the like according to a threshold set by a user. Obviously, the low-voltage switch has the advantages of simple control, and in the embodiment that the pressure detector 500 adopts the low-voltage switch, even if the low-voltage switch is not connected to the control board, the low-voltage switch can be directly connected to the water inlet electromagnetic valve, the booster pump and the like to control the operation of the water inlet electromagnetic valve, the booster pump and the like. This is sufficient in the embodiment of the water purifier.

Accordingly, a preferred pressure detector 500 is provided below, and as shown in fig. 2, 3A-3B, and 4-6, the pressure detector 500 may include a housing assembly 510, a resilient partition 520, and a trigger switch 530.

The housing assembly 510 may be connected to the filter housing 200. Illustratively, the housing assembly 510 may be attached to the filter housing 200 by welding, gluing, or the like. In the illustrated embodiment, a portion of the housing assembly 510 (e.g., a guide 512 to be described later) may be inserted into the filter housing 200, and in this embodiment, a gland 513 of the housing assembly 510 may be fixed to the filter housing 200 to sandwich the guide 512 therebetween. In other embodiments not shown, the housing assembly 510 may also have a unitary structure, so long as its function is achieved. The housing assembly 510 may be provided with a housing opening 511. The resilient partition 520 may cover the housing opening 511. That is, under the cover of the elastic partition 520, the housing opening 511 and the filter housing opening 211 are not communicated. Therefore, the elastic partition 520 can be deformed toward the side where the pressure is small when the pressures at the case opening 511 and the filter case opening 211 are different. In the illustrated embodiment, the housing opening 511 and the filter housing opening 211 are oppositely disposed, and in other embodiments not shown, the housing opening 511 and the filter housing opening 211 may be disposed to be staggered as long as the housing opening 511 and the filter housing opening 211 are in communication with each other without the elastic partition 520. Thus, the water pressure of the water passing through the water inlet 210 may act on the elastic partition 520, thereby deforming the elastic partition 520. Accordingly, the elastic separator 520 may form a pressure receiving end of the pressure detector 500. In the preferred embodiment shown in the drawings, the elastic partition 520 is an elastic membrane, so that the elastic partition 520 has a large elasticity and the elastic partition 520 is easily deformed by the water pressure.

The trigger switch 530 may be disposed within the housing assembly 510. The trigger switch 530 may be triggered when the resilient partition 520 is deformed into the housing assembly 510 to a predetermined extent. The trigger switch 530 may employ various types of trigger switches known in the art or that may occur in the future. Preferably, the trigger switch 530 may include one or more of a micro switch and a proximity switch. The proximity switch may include one or more of a hall switch and a reed switch. The micro switch and the proximity switch are commonly used, so the price is relatively low, the shelf life is guaranteed, and the maintenance and replacement cost is low.

When the filter cartridge assembly 100 filters water, the elastic spacer 520 is deformed (e.g., protruded) toward the inside of the housing assembly 510 if the water pressure of the water inlet 210 is large. When the elastic partition 520 deforms to a predetermined degree, the elastic partition 520 may trigger the trigger switch 530, and the trigger switch 530 may send an electrical signal, based on which, for example, the opening of a water inlet solenoid valve, the starting of a booster pump, and the like of the water purifier may be controlled, so as to operate the water purifier. The pressure detector 500 having the above-described configuration has advantages of simple structure, simple control, reliable performance, low production cost, and the like.

Illustratively, the trigger switch 530 may be electrically connected to the relevant components of the water requiring device through a communication unit (not shown). The communication unit may be used to wirelessly transmit the electrical signal emitted by the trigger switch 530 to the communication unit of the relevant component of the water requiring device. The communication unit of the trigger switch 530 may be a wireless transmitter for converting the electrical signal into a format suitable for wireless transmission. The communication unit of the relevant part of the water requiring device may be a wireless receiver for receiving electrical signals having a wireless transmission format transmitted from a wireless transmitter. The wireless connection mode can reduce the wiring, practices thrift the space of water demand equipment, is favorable to improving the clean and tidy nature of water demand equipment.

Illustratively, the electrical connections of the trigger switch 530 may extend through the housing assembly 510 and out of the filter housing 200. Where the trigger switch 530 requires external power, the electrical connection may include a power connection. The electrical connection may be used to electrically connect to a power source external to the filter cartridge assembly 100 to provide power to the trigger switch 530. In the case of wired transmission, the electrical connection may comprise a data transmission cable. The trigger switch 530 can communicate with an external device through an electrical connection, and the wired connection is fast in data transmission and high in stability and safety.

It is understood that when the trigger switch 530 includes a proximity switch, a micro switch, or other switches requiring power supply, a power supply component such as a battery may be disposed inside the filter element assembly 100, and the trigger switch 530 may be powered through the inside of the filter element assembly 100.

Preferably, the pressure detector 500 may be provided on the mounting head of the filter housing 200 regardless of the kind of the pressure detector 500. The mounting head refers to the end of the cartridge assembly 100 that mates with a filter base in a water requiring device, such as a water purifier. The mounting head is typically provided with a water inlet 210 and a water outlet 220. When the mounting head of the cartridge assembly 100 is mounted to the filter base, the water inlet 210 and outlet 220 on the mounting head are connected to the corresponding water inlet and outlet on the filter base, thereby connecting the water ports of the cartridge assembly 100 and the filter base while they are mounted. By providing the pressure detector 500 on the mounting head and appropriately arranging the filter base, it is possible to complete the mounting and to connect the circuits of both. In this way, the assembly process of the filter cartridge assembly 100 may be simplified.

Illustratively, pressure detector 500 may also include a moveable member 550, as shown in FIG. 3B. Hinge 550 may be disposed within housing assembly 510 between trigger switch 530 and resilient partition 520. The hinge 550 may be attached to the resilient spacer 520 by any means such as adhesive, snap fit, etc. The moveable member 550 is moveable between an initial position and an activated position in response to deformation of the resilient spacer 520. The moveable member 550 is in the activated position to activate the trigger switch 530 when the resilient partition 520 is deformed to a predetermined extent. Since the elastic partition 520 is deformed by the water pressure, the deformed elastic partition 520 has a substantially cone-like structure, so that when the elastic partition 520 is deformed to a predetermined degree, the area of a portion where it can trigger the trigger switch 530 is small, which may result in low stability of the elastic partition 520 in triggering the trigger switch 530. And since the elastic partition 520 itself has elasticity, it may occur that the trigger switch 530 forces the elastic partition 520 to be reversely deformed and the trigger switch 530 is not triggered. By providing the movable member 550, it is ensured that the elastic partition member 520 is deformed without reducing the area of the portion for triggering the trigger switch 530, and by triggering the trigger switch 530 through the rigid movable member 550, it is further ensured that the stability of the pressure detector 500 is high.

Further, the housing assembly 510 may include a guide 512, as shown in fig. 3B. Guide element 512 may guide the movement of moveable member 550 between the initial position and the activated position. The guide member 512 may guide the movable member 550 in any manner, for example, the guide member 512 and the movable member 550 may be guided by a sliding groove and a sliding block, a sliding rod and a sliding block, and the like. By providing the guide member 512, the movable member 550 can be ensured to move within a desired stroke, and the stability of the pressure detector 500 can be ensured to be high.

Preferably, as shown in fig. 3B, the guide 512 may be in the form of a tube sleeve. Movable member 550 is movable within guide member 512 along the inner wall of guide member 512. Thus, the guide member 512 and the movable member 550 are compact and inexpensive to manufacture.

Preferably, as shown in fig. 3B, a position-limiting portion 512a may be provided on the housing assembly. In the embodiment shown in the drawings, the stopper portion 512a is provided on the guide portion 512, and the stopper portion 512a has a circular stepped shape. In other embodiments, not shown, the position-limiting portion 512a may be any type of protrusion, as long as the movable member 550 can abut against the position-limiting portion 512a when in the triggering position. The limiting portion 512a can limit the movable member 550 from moving to the triggering position and then moving to the triggering switch 530. By arranging the limiting part 512a, the movable part 550 can be prevented from impacting and damaging the trigger switch 530 when the water pressure at the water inlet 210 is too high, so that the trigger switch is damaged. In addition, optionally, the limiting portion 512a may also be disposed at any other position on the housing assembly, as long as the limiting function of abutting against the limiting portion 512a when the movable member 550 is located at the triggering position can be achieved.

The guide member 512 is integrally formed with other portions of the housing assembly 510, and optionally, the guide member 512 may be formed separately from other portions of the housing assembly 510. Preferably, as shown in fig. 3B, an edge of the elastic spacer 520 may be clamped between the guide 512 and the filter housing 200. The housing assembly 510 may also include a gland 513. The gland 513 may be attached to the filter housing 200 by any means such as threaded connections, welding, adhesives, etc. The guide 512 may be clamped between the filter housing 200 and the gland 513. Trigger switch 530 may be disposed within gland 513. The fixing of the elastic spacer 520 is completed while the pressing cover 513 is coupled to the filter housing 200. Therefore, in actual production, the assembly is convenient and the time is saved. Further, providing the housing assembly 510 as a separate structure including the guide 512 and the pressing cover 513 can reduce the requirement for machining accuracy, thereby reducing the cost.

The previously described resilient partitions 520 may also be secured in the filter cartridge assembly 100 in other ways. In the illustrated embodiment, the edge of the resilient partition 520 is clamped between the housing assembly 510 and the filter housing 200. That is, during installation, the elastic partition 520 and the guide 512 are sequentially placed on the filter housing 200 and then clamped by the pressing cover 513. In this manner, the structure of the filter element assembly 100 can be simplified. Alternatively, the fixation of the elastic partition 520 may also be independent of the filter housing 200. That is, all of the components of the pressure detector 500 have been formed as a unitary piece prior to mounting the pressure detector 500 to the filter housing 200 and then mounted directly to the filter housing 200. In this case, the housing assembly 510 may further include an annular upper cover, exemplarily, which is snapped on the guide 512, thereby fixing the edge of the elastic partition 520 between the upper cover and the guide 512.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal" and "top", "bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (12)

1. The utility model provides a filter element group spare, its includes the filter shell and holds filter core in the filter shell, the filter shell has water inlet and delivery port, its characterized in that, the filter shell still have with the filter shell opening of water inlet intercommunication, filter element group spare still includes pressure detector, pressure detector sets up on the filter shell, pressure detector's pressure receiving terminal with filter shell opening intercommunication.

2. The filter element assembly according to claim 1, wherein said pressure detector comprises a low pressure switch.

3. The filter element assembly of claim 1, wherein the pressure detector comprises:

a housing assembly having a housing opening disposed thereon, the housing assembly being connected to the filter housing;

a resilient partition covering the housing opening, the resilient partition forming the pressure receiving end; and

a trigger switch disposed within the housing assembly, the trigger switch being triggered when the resilient partition is deformed to a predetermined extent into the housing assembly.

4. The filter element assembly according to claim 3, wherein said pressure detector further comprises a movable member disposed within said housing assembly between said trigger switch and said resilient partition, said movable member connected to said resilient partition, said movable member being movable between an initial position and a triggered position in response to deformation of said resilient partition, said movable member being in said triggered position to trigger said trigger switch when said resilient partition is deformed to said predetermined extent.

5. The filter element assembly according to claim 4, wherein said housing assembly includes a guide member that guides movement of said movable member between said initial position and said activated position.

6. The filter element assembly according to claim 5, wherein said guide member is in the form of a sleeve, said movable member being movable within said guide member along an inner wall of said guide member.

7. The filter element assembly according to claim 5, wherein an edge of said resilient partition is sandwiched between said guide and said filter housing, said housing assembly further comprising a gland coupled to said filter housing, said guide being sandwiched between said filter housing and said gland, said trigger switch being disposed within said gland.

8. The filter element assembly according to claim 4, wherein said housing assembly is provided with a stop portion against which said movable member abuts when in said activated position.

9. The filter element assembly according to claim 3, wherein an edge of said resilient partition is sandwiched between said housing assembly and said filter housing.

10. The filter element assembly of claim 3, wherein the trigger switch comprises one or more of a micro switch and a proximity switch.

11. The filter element assembly according to claim 1, wherein said water inlet and said water outlet are provided on a mounting head of said filter housing, said pressure detector being provided on said mounting head.

12. A water purification machine comprising a filter element assembly according to any one of claims 1 to 11.

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