Water purifier provided with filter sensor

Abstract

The utility model provides a water purifier with a filter sensing sensor, which is characterized by comprising a main shell, a water inlet and a water outlet, a water tank disposed inside the main case and storing raw water; a water purification filter which is disposed inside the main case, is connected to the water tank through a first connection line, and filters the raw water supplied from the water tank; a water outlet which is connected to the water purification filter through a second connection line and which operates so as to discharge the purified water filtered by the water purification filter to the outside; a base plate which is formed so as to mount and support the water tank, and on one side of which a filter coupling part is formed so as to be detachably coupled to the water purification filter; a filter sensing sensor module that senses whether or not the water purification filter is coupled to the filter coupling part; and a control unit that operates and controls to stop a water discharge function through the water outlet when the filter sensing sensor module senses that the water purification filter is not coupled.

Description

Technical Field

[0001] This utility model relates to a water purifier equipped with a filter sensing sensor. More specifically, it relates to a water purifier equipped with a filter sensing sensor that accurately and stably senses the engagement status of the water filter. When the water filter is not engaged, it automatically blocks water flow to prevent the discharge of unpurified water or water overflow from the purifier, thus enabling more stable operation. Background Technology

[0002] Recently, due to the rapid development of industry, environmental pollution has become increasingly serious, with water pollution reaching a severe level. In most places, such as homes and government offices, water is purified for use as drinking water.

[0003] In order to provide logarithmic water purification, water purifiers are used in homes. Typically, a water purifier has a structure that connects to tap water pipes, automatically receives tap water, filters the raw water through an internal filtration device, and discharges it through an outlet.

[0004] Unlike water purifiers used in homes, water purifiers have been developed for use in spaces such as offices where there is no tap water supply. This is because raw water cannot be supplied through tap water pipes.

[0005] Such a water purifier is designed so that the user can directly supply raw water into the water tank inside the purifier, filter the raw water stored in the water tank through a water filter, and discharge it through the outlet.

[0006] Such a water purifier is designed so that when the raw water stored in the tank is used up, the user can refill the tank with fresh raw water using a water bottle or the like, and the water filter is replaced directly by the user each cycle.

[0007] The process of replacing a water filter involves removing the previously used filter and inserting a new one. Before inserting the new filter, if the water dispensing button is accidentally pressed, the system supplies water from the tank to the outlet. During this process, without a filter, water flows out through the connection point, potentially wetting the surrounding environment or causing malfunctions in the water purifier. Furthermore, if water is dispensed directly from the outlet without a filter, unfiltered water may pose a health risk to the user.

[0008] Therefore, there is a need for a safety device that can prevent water from the sink from flowing out of the outlet even when the user operates the water dispensing button while the water filter is removed, such as during water filter replacement.

[0009] Existing technical documents

[0010] Patent documents

[0011] Korean Patent No. 10-1721676 Utility Model Content

[0012] This utility model was conceived to solve the problems of the prior art. The purpose of this utility model is to provide a water purifier with a filter sensing sensor that senses the connection status of the water filter and automatically stops water discharge when the filter is not connected, thereby preventing the discharge of unpurified water or the overflow of water inside the water purifier and causing malfunctions, thus enabling more stable use of the water purifier.

[0013] Another objective of this invention is to provide a water purifier equipped with a filter sensing sensor that can accurately sense whether a filter is connected through a filter sensing sensor, improve usage safety through various controls including water dispensing function based on whether a filter is connected, and enable effective management.

[0014] Another objective of this invention is to provide a water purifier equipped with a filter sensing sensor that not only senses the filter connection status but also automatically executes a flushing mode when the filter is connected to improve the water purification status in the initial stage of filter connection, and displays the filter replacement period and status to the user, thereby further improving user convenience.

[0015] The technical solution of this utility model for solving the above-mentioned problems is as follows.

[0016] This utility model provides a water purifier equipped with a filter sensing sensor, characterized in that it includes: a main shell; a water tank disposed inside the main shell and storing raw water; a water filter disposed inside the main shell, connected to the water tank via a first connecting pipe, and filtering the raw water supplied from the water tank; a water outlet connected to the water filter via a second connecting pipe, and operating to discharge purified water filtered by the water filter to the outside; a base plate formed to hold and support the water tank, and having a filter connection portion formed on one side so as to detachably connect to the water filter; a filter sensing sensor module that senses whether the water filter is connected to the filter connection portion; and a control unit that, when the filter sensing sensor module senses that the water filter is not connected, operates to stop the water discharge function through the water outlet.

[0017] The filter coupling is recessed on one side of the base plate so as to insert and place the water filter. The filter sensing sensor module is connected to the filter coupling through the filter coupling with its upper end protruding from the bottom surface of the filter coupling, and is configured to be pressed by the water filter when the water filter is inserted into the filter coupling.

[0018] Wherein, on one side of the bottom surface of the filter joint, a through hole is formed so that the filter sensing sensor module is connected through it. The filter sensing sensor module includes: a movable body that is inserted through the through hole and moves up and down, and is elastically supported in a way that protrudes upward from the bottom surface of the filter joint; and a sensing sensor that is disposed at the lower part of the movable body and is pressed and released as the movable body moves up and down to generate a sensing signal.

[0019] A hollow cylindrical guide sleeve protruding downward along the outer periphery of the through hole is formed below the filter joint. The moving body is connected to the guide sleeve and moves up and down in a manner that is guided by the guide sleeve to move up and down.

[0020] The movable body is fitted with a sealing body that prevents water from flowing downwards from the filter joint through the through hole and guide sleeve.

[0021] The sealing body includes: a support body that is in close contact with the outer peripheral surface of the moving body and surrounds the outer peripheral surface of the moving body; and a sealing gasket that is formed to protrude radially around the outer peripheral surface of the support body and has its outer end in close contact with the inner peripheral surface of the guide sleeve. The sealing gasket is flat and is formed to be elastically deformable by friction with the inner peripheral surface of the guide sleeve during movement with the moving body.

[0022] The control unit controls the operation of the supply pump connected to the first connecting pipeline and the outlet valve connected to the outlet to enable water to flow through the outlet. When the filter sensing sensor module detects that the water filter is not connected, the operation control stops the supply pump and the outlet valve.

[0023] When the filter sensing sensor module detects that the water filter has been reassembled, the control unit operates to perform a flushing mode that discharges a preset reference flow rate of purified water through the outlet, starting from the sensed time point.

[0024] The rinsing mode is set to be activated by user operation or automatically.

[0025] The main housing has a display section that can display the replacement period information of the water filter. When the filter sensing sensor module senses that the water filter has been reassembled, the control unit operates to display the replacement period of the water filter on the display section after a preset usage period has elapsed from the sensed time.

[0026] The main housing is equipped with a warning light. When the filter sensing sensor module detects that the water filter is not connected, the control unit controls the operation to turn on the warning light.

[0027] The effects of this utility model are as follows.

[0028] According to this utility model, the connection status of the water purifier filter is sensed, and when the filter is not connected, the water discharge function is automatically stopped. This prevents the discharge of unpurified water or the overflow of water from inside the water purifier, thus preventing malfunctions and enabling more stable use.

[0029] Furthermore, it has the ability to accurately sense whether a filter is connected through a filter sensing sensor, and based on whether a filter is connected, it can improve usage safety through various controls including water dispensing function, and enable effective management.

[0030] In addition, it not only senses the filter's connection status, but also automatically executes a flushing mode when the filter is connected to improve the water purification status in the initial stage of filter connection, and displays the filter replacement time and status to the user, thereby further improving user convenience. Attached Figure Description

[0031] Figure 1 This is a perspective view schematically showing the outline of a water purifier equipped with a filter sensing sensor according to an embodiment of the present invention.

[0032] Figure 2 This is a conceptual diagram shown to illustrate the flow of water in a water purifier equipped with a filter sensing sensor according to an embodiment of the present invention.

[0033] Figure 3 This is a perspective view schematically illustrating the water filter combined structure of a water purifier equipped with a filter sensing sensor according to an embodiment of the present invention.

[0034] Figure 4 This is a bottom perspective view schematically illustrating the mounting structure of a water purifier equipped with a filter sensing sensor according to an embodiment of the present invention, showing the water filter and the filter sensing sensor module.

[0035] Figure 5 and Figure 6This diagram schematically illustrates the working state of a filter sensing sensor module in a water purifier equipped with a filter sensing sensor according to an embodiment of the present invention.

[0036] Figure 7 This is a functional block diagram schematically illustrating the control-related components of a water purifier equipped with a filter sensing sensor according to an embodiment of the present invention.

[0037] Figure Labels

[0038] 100: Main housing; 110: Operation button; 120: Warning light; 130: Display unit; 200: Water tank; 210: Supply pump; 300: Water filter; 320: Connector; 400: Water outlet; 410: Water outlet valve; 500: Base plate; 510: Filter joint; 511: Through hole; 512: Guide sleeve; 600: Filter sensing sensor module; 610: Moving body; 620: Sensing sensor; 621: Support rod; 622: Sensor housing; 630: Sealing body; 631: Support body; 632: Sealing gasket. Detailed Implementation

[0039] The specific embodiments for implementing this utility model will now be described in detail with reference to the accompanying drawings.

[0040] First, when affixing reference numerals to the constituent elements in each figure, it should be noted that for the same constituent elements, even if shown in different figures, the reference numerals should be kept consistent as much as possible. Furthermore, in describing this utility model, detailed descriptions of known components or functions are omitted when it is determined that such detailed descriptions may obscure the essence of the utility model.

[0041] Furthermore, when a constituent element is described as being “connected,” “supported,” “linked,” “supplied,” “transmitted,” or “in contact” with another constituent element, it should be understood that it may be directly connected, supported, linked, supplied, transmitted, or in contact with that other constituent element, but there may be other constituent elements in between.

[0042] The terminology used in this specification is for describing particular embodiments only and is not intended to limit the scope of the invention. Unless the context otherwise requires, singular expressions include plural expressions.

[0043] Furthermore, it should be noted beforehand that the descriptions of "top," "bottom," and "side" in this specification are based on the accompanying drawings, and may differ when the orientation of the object changes. For the same reason, some components are exaggerated, omitted, or shown schematically in the drawings, and the size of each component does not perfectly reflect its actual size.

[0044] Furthermore, terms including ordinal numbers, such as "first" and "second," can be used to describe multiple constituent elements, but these constituent elements are not limited to such terms. These terms are used only for the purpose of distinguishing one constituent element from another.

[0045] As used in this specification, "comprising" means that a particular characteristic, region, integer, step, action, element, and / or component is specified, but does not exclude the presence or addition of another particular characteristic, region, integer, step, action, element, component, and / or group.

[0046] Figure 1 This is a perspective view schematically showing the outline of a water purifier equipped with a filter sensing sensor according to an embodiment of the present invention. Figure 2 This is a conceptual diagram shown to illustrate the flow of water in a water purifier equipped with a filter sensing sensor according to an embodiment of the present invention.

[0047] One embodiment of the present invention is a water purifier that senses whether an internal water filter 300 is connected and can operate and control the water output function according to the sensing signal. It includes a main shell 100, a water tank 200, a water filter 300, a water outlet 400, a base plate 500, a filter sensing sensor module 600, and a control unit 700.

[0048] Firstly, one embodiment of the water purifier of this utility model can adopt a structure in which the user directly supplies raw water, instead of connecting the tap water pipe to the water tank inside the water purifier as described in the background art, but it is not limited thereto. That is, it can also adopt a structure in which the tap water pipe is connected to the water tank inside the water purifier to automatically supply raw water.

[0049] For ease of explanation, the following description will be based on a structure in which the user is directly supplied with raw water without connecting the tap water pipe to the water tank 200.

[0050] The main housing 100 is a component that constitutes the shape and supporting structure of the water purifier device. It has an internal space and may have an operation button 110, a warning light 120, and a display 130 on one side. A cup holder may be formed on the front of the main housing 100, and a water outlet 400 may be arranged on the upper part of the cup holder.

[0051] A water tank 200 is disposed inside the main housing 100 to store raw water. A water filter 300 is disposed inside 100 and connected to the water tank 200 via a first connecting line L1 to filter the raw water supplied from the water tank 200. A supply pump 210 can be installed on the first connecting line L1 to ensure a smooth supply of raw water from the water tank 200 to the water filter 300.

[0052] Connector 320 is connected to water filter 300, and connector 320 has an inlet 321 and an outlet 322. One end of the first connecting line L1 is connected to the water tank 200, and the other end of the first connecting line L1 is connected to the inlet 321 of connector 320. Raw water supplied from the water tank 200 through the first connecting line L1 flows into the internal space of water filter 300 through the inlet 321 of connector 320, and is discharged to the outside through the outlet 322 of connector 320 after being filtered inside.

[0053] The water filter 300 is connected to the outlet 400 via a second connecting line L2. One end of the second connecting line L2 is connected to the outlet 322 of the connector 320 of the water filter 300, and the other end of the second connecting line L2 is connected to the outlet 400.

[0054] The purified water filtered by the water filter 300 is discharged through the outlet 322 of the connector 320 and supplied to the outlet 400 through the second connecting line L2. The outlet 400 can be opened and closed by the electromagnetic outlet valve 410, and purified water is discharged through the outlet 400 when the outlet valve 410 is open.

[0055] The control unit 700 operates and controls the working state of the water outlet valve 410 according to the operation signal of the operation button 110. For example, when the user operates the operation button 110 to dispense water, the operation signal of the operation button 110 is applied to the control unit 700, and the control unit 700 opens the water outlet valve 410 according to the applied operation signal. At the same time, the supply pump 210 can be activated to supply water in the water tank 200 through the water filter 300 to the water outlet 400.

[0056] One embodiment of the present invention is a water purifier that can filter the raw water in the water tank 200 through the structure described above, and output the purified water through the water outlet 400.

[0057] The components related to the filter sensing sensor module 600, which is capable of sensing whether the water filter 300 is combined, will be described in more detail below.

[0058] Figure 3 This is a perspective view schematically illustrating the water purifier filter assembly structure of a water purifier equipped with a filter sensing sensor according to an embodiment of the present invention. Figure 4 This is a bottom perspective view schematically illustrating the mounting structure of the water filter and filter sensing sensor module of a water purifier equipped with a filter sensing sensor according to an embodiment of the present invention. Figure 5 and Figure 6This diagram schematically illustrates the working state of a filter sensing sensor module in a water purifier equipped with a filter sensing sensor according to an embodiment of the present invention.

[0059] like Figure 3 As shown, a separate base plate 500 is installed inside the main shell 100.

[0060] The base plate 500 is formed in a generally flat shape such that a support tank 200 is placed on it, and a filter joint 510 is formed on one side such that a water purification filter 300 can be detachably connected.

[0061] The filter sensing sensor module 600 can be attached to the base plate 500 in a manner that allows it to sense whether the water filter 300 is attached to the filter connection portion 510. The filter sensing sensor module 600 can be implemented using various types of sensors, which will be described later.

[0062] When the filter sensing sensor module 600 detects that the water filter 300 is not connected, the control unit 700 is given a sensing signal from the filter sensing sensor module 600 and operates the control to stop the water outlet 400 based on the applied sensing signal.

[0063] For example, when the filter sensing sensor module 600 detects that the water filter 300 is not connected, even if the user generates a water dispensing operation signal from the operation button 110, the control unit 700 can keep the water outlet valve 410 of the water outlet 400 closed, and can also keep the operation of the supply pump 210 stopped. That is, the function of stopping water dispensing can be controlled by closing the water outlet valve 410 and stopping the operation of the supply pump 210.

[0064] Accordingly, even without the water filter 300, if the user accidentally operates the operation button 110, the water flow will be stopped, preventing water from overflowing and causing malfunctions or wetting the surrounding environment. This ensures safe use. Furthermore, it prevents unfiltered raw water from exiting through the outlet 400, further ensuring hygiene and safety.

[0065] The structure of the filter sensing sensor module 600 will be described in more detail. First, the filter joint 510 of the base plate 500 is formed in a recessed form on one side of the base plate 500 so as to insert and place the water purification filter 300.

[0066] At this time, the filter sensing sensor module 600 is configured to be connected to the filter joint 510 through the bottom surface of the filter joint 510 with its upper end protruding out, and can be pressed by the water purification filter 300 as it is inserted into the filter joint 510.

[0067] More specifically, a through hole 511 is formed on one side of the bottom surface of the filter joint 510 so as to allow the filter sensing sensor module 600 to pass through and connect. The filter sensing sensor module 600 includes: a movable body 610, which is inserted through the through hole 511 and moves up and down, and is elastically supported in a way that protrudes upward from the bottom surface of the filter joint 510; and a sensing sensor 620, which is disposed on the lower part of the movable body 610 and is pressed and released as the movable body 610 moves up and down to generate a sensing signal.

[0068] At this time, a hollow cylindrical guide sleeve 512 protruding downward along the outer periphery of the through hole 511 is formed below the filter joint 510, and the moving body 610 is connected to the guide sleeve 512 and moves up and down in a manner guided by the guide sleeve 512 along a vertical movement path.

[0069] The elastic component that applies an upward elastic force to the moving body 610 can be installed separately in the internal space of the guide sleeve 512. However, in one embodiment of the present invention, a switch-type sensing sensor 620 can be used to configure the moving body 610 to be elastically supported upward by the elastic force generated in the switching structure of the sensing sensor 620.

[0070] like Figure 5 As shown, when the water filter 300 is removed from the filter joint 510, the movable body 610 is configured to protrude upward from the bottom surface of the filter joint 510 by elastic force. In this state, since the sensing sensor 620 is not pressed, the sensing sensor 620 generates an OFF signal indicating that there is no water filter.

[0071] like Figure 6 As shown, when the water filter 300 is inserted into the filter connection portion 510, the water filter 300 presses down on the movable body 610, and the movable body 610 moves downward and presses down on the sensing sensor 620. In this state, the sensing sensor 620 generates an ON signal indicating that the water filter has been installed.

[0072] On the other hand, during the removal of the water filter 300, water remaining in the water filter 300 may flow out and accumulate in the filter joint 510. The water accumulated in the filter joint 510 can flow downwards through the clearance space between the through hole 511 and the moving body 610, and this downward-flowing water can flow into the sensing sensor 620. Thus, the water accumulated in the filter joint 510 flowing into the sensing sensor 620 can cause the sensing sensor 620 to malfunction or fail.

[0073] In one embodiment of the present invention, a separate sealing body 630 is used to prevent water from flowing from the filter joint 510 into the sensing sensor 620.

[0074] The sealing body 630 is integrated into the movable body 610 and is configured to block the movement of water within the internal space of the guide sleeve 512. For example, the sealing body 630 includes: a support body 631 that is in close contact with and surrounds the outer peripheral surface of the movable body 610; and a sealing gasket 632 that is formed to protrude radially around the outer peripheral surface of the support body 631 and is formed to make its outer end in close contact with the inner peripheral surface of the guide sleeve 512.

[0075] The support body 631 and the sealing gasket 632 can be integrally formed from an elastic material. The sealing gasket 632 is flat and can be configured to elastically deform with friction against the inner circumferential surface of the guide sleeve 512 during movement with the moving body 610.

[0076] Thus, since the sealing gasket 632 is kept in close contact with the inner circumferential surface of the guide sleeve 512 in an elastic manner, water can be completely prevented from flowing out of the space of the guide sleeve 512 through the through hole 511 to the lower part of the water.

[0077] Such a sealing body 630 is formed to move up and down together with the moving body 610, and its position is fixed during the up and down movement together with the moving body 610.

[0078] For this purpose, the movable body 610 may include: a cylindrical movable body portion 611 extending in the vertical direction; a pressing plate portion 612 extending horizontally by pressing the sensing sensor 620 at the lower end of the movable body portion 611; and an expansion boss portion 613 expanding by forming an expansion boss at the upper end of the movable body portion 611. The sealing body 630 is tightly bonded to the outer peripheral surface of the movable body portion 611 between the pressing plate portion 612 and the expansion boss portion 613, and its vertical position is fixed at this position by the pressing plate portion 612 and the expansion boss portion 613. That is, the sealing body 630 moves vertically together with the movable body 610 in a state where its position relative to the movable body 610 is fixed.

[0079] On the other hand, the sensing sensor 620 is disposed inside a sensor housing 622 formed in the shape of an open container, and is elastically supported by a separate spring protruding upward toward the upper part of the sensor housing 622. The moving body 610 can be supported by the elastic force of the sensing sensor 620 protruding upward toward the upper part of the filter joint 510. Figure 4 As shown, the sensor housing 622 is fixed to the lower part of the filter joint 510 at intervals by separate support rods 621, and the vertical height of the sensor housing 622 can be adjusted by adjusting the joint length of the support rods 621. By adjusting the vertical height of the sensor housing 622, the height of the sensing sensor 620 can be adjusted, thereby adjusting the height of the moving body 610 protruding from the bottom surface of the filter joint 510.

[0080] Based on this structure, the filter sensing sensor module 600 can accurately sense whether the water filter 300 is connected to the filter connection part 510, and can maintain a stable working state without being damaged or malfunctioning due to water outflow.

[0081] Figure 7 This is a functional block diagram schematically illustrating the control-related components of a water purifier equipped with a filter sensing sensor according to an embodiment of the present invention.

[0082] In one embodiment of the water purifier of this utility model, as mentioned above, when the water filter 300 is not connected, even if the operation button 110 is operated, the operation control will be set to stop the water output function.

[0083] Therefore, the control unit 700 is given an operation signal from the operation button 110 and a sensing signal from the filter sensing sensor module 600, and controls the operation status of the supply pump 210 and the outlet valve 410.

[0084] like Figure 1 As shown, the warning light 120 and the display unit 130 can be formed on the main housing 100, and the display unit 130 can display the replacement period information of the water filter 300. The replacement period information can be expressed in various ways, such as displaying the degree to which the replacement period has been reached in the form of scales or charts, or displaying it in the form of characters, etc.

[0085] When the filter sensing sensor module 600 senses that the water filter 300 has been reassembled, after a preset usage period has elapsed from the sensed time, the control unit 700 can operate to display the replacement period of the water filter 300 on the display unit 130.

[0086] For example, when the filter sensing sensor module 600 senses that the water filter 300 has been removed and a new water filter 300 has been installed, if the replacement period of the water filter 300 is, for example, 6 months, after 4 months, the control unit 700 can control the display unit 130 to display the replacement period of the water filter 300 (2 months remaining).

[0087] Furthermore, when the filter sensing sensor module 600 detects that the water filter 300 is not connected, the control unit 700 can operate to control the warning light 120 of the main housing 100 to be lit.

[0088] This allows users to recognize that the water filter 300 is not connected and guides them to quickly replace the water filter 300. In this state, even if the water outlet button is operated, the function of stopping the water outlet can be executed.

[0089] On the other hand, when the filter sensing sensor module 600 senses that the water filter 300 has been reassembled, the control unit 700 can operate to control the flushing mode to discharge a preset reference flow of purified water through the outlet 400 from the sensed time point.

[0090] When the filter sensing sensor module 600 senses that the water filter 300 has been removed and a new water filter 300 has been installed, the control unit 700 can start the supply pump 210 and open the outlet valve 410 to control the discharge of purified water at a reference flow rate (e.g., 1L to 3L) through the outlet 400.

[0091] This rinsing mode serves to clean the newly replaced water filter 300 before it is put into regular use. In other words, it removes any foreign matter that may be present in the new water filter 300 along with the water to the outside.

[0092] This flushing mode can start automatically when the water filter 300 is replaced, that is, when a sensing signal is generated by the filter sensing sensor module 600, or when the user performs an operation to approve the flushing mode.

[0093] The above description is merely an exemplary illustration of the technical concept of this utility model, and those skilled in the art can make various modifications and variations without departing from the essential characteristics of this utility model. Therefore, the embodiments disclosed in this utility model are not intended to limit the technical concept of this utility model, but are for illustrative purposes, and the scope of the technical concept of this utility model is not limited to these embodiments. The protection scope of this utility model should be interpreted according to the claims, and all technical concepts within the equivalent scope should be interpreted as falling within the scope of the rights of this utility model.

Claims

1. A water purifier equipped with a filter sensing sensor, characterized in that, include: Main shell; A water tank, which is located inside the main shell, stores raw water; A water filter is disposed inside the main housing, connected to the water tank via a first connecting pipeline, and filters the raw water supplied from the water tank; The water outlet is connected to the water filter via a second connecting pipeline and operates to discharge purified water filtered by the water filter to the outside. A base plate is formed to place and support the water tank, and a filter joint is formed on one side in a manner that allows the water purification filter to be detachably connected; A filter sensing sensor module that senses whether the water purification filter is connected to the filter connection part; as well as The control unit, when the filter sensing sensor module detects that the water purification filter is not in use, operates by stopping the water flow through the outlet.

2. The water purifier with a filter sensing sensor according to claim 1, characterized in that, The filter joint is formed in a recessed shape on one side of the base plate so as to insert and place the water purification filter. The filter sensing sensor module is connected to the filter joint through the filter joint in such a way that its upper end protrudes from the bottom surface of the filter joint, and is configured to be pressed by the water filter when the water filter is inserted into the filter joint.

3. The water purifier with a filter sensing sensor according to claim 2, characterized in that, A through hole is formed on one side of the bottom surface of the filter joint so that the filter sensing sensor module can be connected through it. The filter sensing sensor module includes: A movable body, which is inserted through the through hole and moves up and down, and is elastically supported in a manner that protrudes upward from the bottom surface of the filter joint; and A sensing sensor is disposed at the lower part of the moving body and is pressed and released as the moving body moves up and down to generate a sensing signal.

4. The water purifier with a filter sensing sensor according to claim 3, characterized in that, A hollow cylindrical guide sleeve protruding downward along the outer periphery of the through hole is formed below the filter joint. The moving body is connected to the guide sleeve and moves up and down in a manner that is guided by the guide sleeve to move up and down along a path.

5. The water purifier with a filter sensing sensor according to claim 4, characterized in that, The movable body is fitted with a sealing body that prevents water from flowing downwards from the filter joint through the through hole and guide sleeve.

6. The water purifier with a filter sensing sensor according to claim 5, characterized in that, The sealing body includes: A supporting body, which is in close contact with and surrounds the outer peripheral surface of the movable body; and The sealing gasket is formed to protrude radially around the outer peripheral surface of the support body, and its outer end is in close contact with the inner peripheral surface of the guide sleeve. The sealing gasket is flat and is configured to elastically deform with friction against the inner circumferential surface of the guide sleeve during movement with the moving body.

7. The water purifier with a filter sensing sensor according to claim 1, characterized in that, The control unit controls the operation of the supply pump connected to the first connecting pipeline and the outlet valve connected to the outlet to enable water to flow through the outlet. When the filter sensing sensor module detects that the water filter is not connected, the operation control is to stop the supply pump and the outlet valve from working.

8. The water purifier with a filter sensing sensor according to claim 7, characterized in that, When the filter sensing sensor module senses that the water filter has been reassembled, the control unit operates to perform a flushing mode that discharges a preset reference flow rate of purified water through the outlet, starting from the sensed time point.

9. The water purifier with a filter sensing sensor according to claim 8, characterized in that, The rinsing mode is set to be activated by user operation or automatically.

10. The water purifier with a filter sensing sensor according to claim 1, characterized in that, The main housing has a display section capable of showing the replacement period information of the water filter. When the filter sensing sensor module senses that the water filter has been reassembled, the control unit operates to display the replacement period of the water filter on the display unit after a preset usage period has elapsed from the sensed time.

11. The water purifier with a filter sensing sensor according to claim 1, characterized in that, A warning light is installed on the main casing. When the filter sensing sensor module detects that the water purification filter is not connected, the control unit operates to illuminate the warning light.

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