Water purifier

Abstract

To make components for purifying raw water easily attachable and detachable.SOLUTION: A water purifier 100 comprises a main body 1 connected to a water supply appliance W, and a cartridge 2 detachable from the main body 1, and purifies raw water supplied from the water supply appliance W in the cartridge 2 to produce purified water. In the water purifier 100, the main body 1 has a raw water inlet section 10, a raw water supply section 11, a purified water receiving section 12, a discharge section 13, and a main body side connecting section 14. The cartridge 2 includes a raw water receiving section 20, a purification material-containing section 21 capable of containing a purification material C, a purified water supply section 22, and a cartridge side connecting section 23. When the main body side connecting section 14 and the cartridge side connecting section 23 satisfy a predetermined condition, the main body 1 and the cartridge 2 are connected to each other.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a water purifier. [Background technology]

[0002] There is known a water purifier that purifies raw water supplied from a water supply device such as a water faucet to produce purified water. For example, Patent Document 1 discloses a water purifier that is made up of a filter unit that is interposed in the middle of a pipe (water supply device) through which raw water flows. In this water purifier, the raw water is purified by passing through the filter unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3135923 Summary of the Invention [Problem to be solved by the invention]

[0004] In the water purifier as described above, since the filter unit is directly connected to the water supply device, for example, when replacing the filter unit, the entire water purifier needs to be removed, which is troublesome. Therefore, in the technical field to which the present disclosure relates, there is a demand for a water purifier in which components for purifying raw water can be easily attached and detached. [Means for solving the problem]

[0005] A water purifier (100) according to one embodiment of the present disclosure includes a main body (1) connected to a water supply device (W) and a cartridge (2) detachable from the main body (1), and purifies raw water supplied from the water supply device (W) in the cartridge (2) to produce purified water. The main body (1) is used to connect a raw water inlet section (10) into which raw water flows from the water supply device (W), a raw water delivery section (11) that delivers the raw water to the cartridge (2), a purified water receiving section (12) that receives the purified water that has passed through the cartridge (2), and a discharge section (13) that discharges the raw water or purified water, to the cartridge (2). The cartridge (2) comprises a raw water receiving section (20) that receives raw water delivered by the raw water delivery section (11), a purification material built-in section (21) that can house a purification material (C) that purifies the raw water received by the raw water receiving section (20), a purified water delivery section (22) that delivers purified water, obtained by purifying the raw water with the purification material (C), to the main body section (1), and a cartridge side connection section (23) used for connection to the main body section (1), and the main body section (1) and the cartridge (2) are connected when the main body side connection section (14) and the cartridge side connection section (23) satisfy a predetermined condition.

[0006] According to this water purifier (100), raw water flowing into the main body (1) from the water supply device (W) is first sent to the cartridge (2), purified in the cartridge (2), and then returned to the main body (1) and released as purified water. Here, the main body (1) and the cartridge (2) are connected when a predetermined condition is satisfied between the main body side connector (14) provided on the main body (1) and the cartridge side connector (23) provided on the cartridge (2). In other words, the main body (1) and the cartridge (2) can be easily attached and detached. Thus, according to this water purifier (100), components for purifying raw water can be easily attached and detached.

[0007] In the water purifier (100) according to one aspect of the present disclosure, the main body (1) may include a connection operation unit (15) for performing a connection operation to switch between an OFF state in which the main body (1) and the cartridge (2) are not connected and an ON state in which the main body (1) and the cartridge (2) are connected. This makes it even easier to attach and detach components for purifying raw water.

[0008] In the water purifier (100) according to one aspect of the present disclosure, the main body side connecting part (14) includes a raw water supply side fastener (14C) for the raw water supply part (11) and a purified water receiving side fastener (14D) for the purified water receiving part (12), and the cartridge side connecting part (23) includes a raw water receiving side fastener (23C) for the raw water receiving part (20) and a purified water supply side fastener (23D) for the purified water supply part (22), and the main body part (1) and the cartridge (2) may be connected by the engagement between the raw water supply side fastener (14C) and the raw water receiving side fastener (23C) and the engagement between the purified water supply side fastener (23D) and the purified water receiving side fastener (14D). This allows the main body part (1) and the cartridge (2) to be easily attached and detached.

[0009] In a water purifier (100) according to one embodiment of the present disclosure, the main body side connecting portion (14) includes a main body side raw water pipe (14A) connected to the raw water supply portion (11) and a main body side purified water pipe (14B) connected to the purified water receiving portion (12), and the cartridge side connecting portion (23) includes a cartridge side raw water pipe (23A) connected to the raw water receiving portion (20) and having a larger diameter than the main body side raw water pipe (14A), and a cartridge side purified water pipe (23B) connected to the purified water supply portion (22) and having a larger diameter than the main body side purified water pipe (14B), and by connecting the main body portion (1) and the cartridge (2), the main body side raw water pipe (14A) and the cartridge side raw water pipe (23A) are connected, and the main body side purified water pipe (14B) and the cartridge side purified water pipe (23B) may be connected. This ensures reliable water supply and reception between the main body (1) and the cartridge (2).

[0010] In a water purifier (100) according to one embodiment of the present disclosure, the main body side raw water pipe (14A) is provided inside a raw water pipe side recess (1A) which is a recess formed in the outer surface of the main body part (1), the main body side purified water pipe (14B) is provided inside a purified water pipe side recess (1B) which is a recess formed in the outer surface of the main body part (1), the raw water supply side fastener (14C) and the raw water receiving side fastener (23C) are engaged inside the raw water pipe side recess (1A), and the purified water supply side fastener (23D) and the purified water receiving side fastener (14D) may be engaged inside the purified water pipe side recess (1B). With this, the engagement points between the raw water supply side fastener (14C) and the raw water receiving side fastener (23C), and the engagement points between the purified water supply side fastener (23D) and the purified water receiving side fastener (14D) are not exposed, so that the main body (1) and the cartridge (2) can be stably connected.

[0011] In a water purifier (100) according to one embodiment of the present disclosure, a first central axis (CL1) which is the central axis of the main body side raw water pipe (14A) along the direction in which the end portion of the main body side raw water pipe (14A) that connects to the cartridge side raw water pipe (23A) extends passes inside the raw water pipe side recess (1A), and a second central axis (CL2) which is the central axis of the main body side purified water pipe (14B) along the direction in which the end portion of the main body side purified water pipe (14B) that connects to the cartridge side purified water pipe (23B) extends passes inside the purified water pipe side recess (1B), and the area of ​​the inner portion of the raw water pipe side recess (1A) in a plane perpendicular to the first central axis (CL1) may be larger than the area of ​​the inner portion of the purified water pipe side recess (1B) in a plane perpendicular to the second central axis (CL2). This makes it easier to make the raw water pipe, which is located upstream compared to the purified water side and therefore has a higher water pressure, thicker, making it easier to reduce the water pressure inside that pipe.

[0012] In the water purifier (100) according to one aspect of the present disclosure, the depth of the raw water pipe recess (1A) in the direction of the first central axis (CL1) which is the central axis of the main body side raw water pipe (14A) along the direction in which the end portion of the main body side raw water pipe (14A) connected to the cartridge side raw water pipe (23A) extends is deeper than the depth of the purified water pipe recess (1B) in the direction of the second central axis (CL2) which is the central axis of the main body side purified water pipe (14B) along the direction in which the end portion of the main body side purified water pipe (14B) connected to the cartridge side purified water pipe (23B) extends, and the length of the cartridge side raw water pipe (23A) may be shorter than the length of the cartridge side purified water pipe (23B). This allows water to be reliably sent and received between the main body (1) and the cartridge (2).

[0013] In the water purifier (100) according to one aspect of the present disclosure, the depth of the raw water pipe recess (1A) in the direction of the first central axis (CL1) which is the central axis of the main body side raw water pipe (14A) along the direction in which the end portion of the main body side raw water pipe (14A) connected to the cartridge side raw water pipe (23A) extends is shallower than the depth of the purified water pipe recess (1B) in the direction of the second central axis (CL2) which is the central axis of the main body side purified water pipe (14B) along the direction in which the end portion of the main body side purified water pipe (14B) connected to the cartridge side purified water pipe (23B) extends, and the length of the cartridge side raw water pipe (23A) may be longer than the length of the cartridge side purified water pipe (23B). This allows water to be reliably sent and received between the main body (1) and the cartridge (2).

[0014] In the water purifier (100) according to one aspect of the present disclosure, the main body (1) is formed with a communication part (1C) that communicates the raw water pipe side recess (1A) and the purified water pipe side recess (1B), and in the OFF state, the raw water supply side fastener (14C) and the purified water receiving side fastener (14D) may be located in the raw water pipe side recess (1A), and in the ON state, the raw water supply side fastener (14C) may be located in the raw water pipe side recess (1A), and the purified water receiving side fastener (14D) may be located in the purified water pipe side recess (1B) via the communication part (1C). This allows a compact configuration of a mechanism for easily attaching and detaching the main body (1) and the cartridge (2).

[0015] In the water purifier (100) according to one aspect of the present disclosure, the purified water receiving side fastener (14D) may be provided at a position deeper than the raw water supply side fastener (14C) in the direction of the second central axis (CL2). This allows a compact configuration of a mechanism for easily attaching and detaching the main body (1) and the cartridge (2).

[0016] In the water purifier (100) according to one aspect of the present disclosure, the raw water supply side fastener (14C) and the purified water receiving side fastener (14D) are rotatable about a first central axis (CL1) within a groove formed in the circumferential direction on the inner peripheral surface of the raw water pipe side recess (1A), and the connecting operation may be an operation of rotating the raw water supply side fastener (14C) and the purified water receiving side fastener (14D) about the first central axis (CL1). This allows a compact configuration of a mechanism for easily attaching and detaching the main body (1) and the cartridge (2).

[0017] In the water purifier (100) according to one embodiment of the present disclosure, the main body side connecting part (14) includes a plurality of raw water supply side fasteners (14C) and a single purified water receiving side fastener (14D), and the cartridge side connecting part (23) includes a plurality of raw water receiving side fasteners (23C) equal in number to the raw water supply side fasteners (14C) and a single purified water supply side fastener (23D), and each of the raw water supply side fasteners (14C) and each of the raw water receiving side fasteners (23C) may be engaged in a one-to-one relationship. This allows the main body part (1) and the cartridge (2) to be reliably connected, since the number of fasteners on the raw water side, which is upstream compared to the purified water side and where water pressure is likely to be high, is increased. In addition, the structure can be simplified, since only a single fastener is required on the purified water side, which is downstream compared to the raw water side and where water pressure is unlikely to be high.

[0018] In the water purifier (100) according to an aspect of the present disclosure, the discharge unit (13) may be switchable between a shower mode in which purified water is discharged in a shower-like manner and a straight mode in which purified water is discharged in a straight manner, thereby improving convenience.

[0019] In the water purifier (100) according to one aspect of the present disclosure, the cartridge (2) may be coupled to the main body (1) and, when the main body (1) is connected to the water supply device (W), disposed at a position to the side of the end portion of the water supply device (W) connected to the main body (1) and at a position that does not intersect with the third central axis (CL3), which is the central axis of the raw water in the direction in which the raw water flows from the water supply device (W) to the main body (1). This allows the cartridge (2) to be disposed at a position that is unlikely to get in the way when the water supply device (W) is used.

[0020] In the water purifier (100) according to one aspect of the present disclosure, the third central axis (CL3) may be substantially aligned with a fourth central axis (CL4) that is a central axis of purified water in a direction in which purified water is discharged from the discharge portion (13) in the shower mode, and the discharge portion (13) may be disposed at a position overlapping with the third central axis (CL3). In this manner, purified water is discharged from the water purifier (100) at a position substantially aligned with a position at which raw water is discharged from the water supply device (W) when the water purifier (100) is not attached, so that there is little discomfort during use.

[0021] In the water purifier (100) according to one aspect of the present disclosure, the water supply device (W) discharges raw water substantially vertically downward, and the cartridge (2) may be connected to the main body part (1) and disposed in a position above the main body part (1) in a state in which the main body part (1) is connected to the water supply device (W). In this manner, the cartridge (2) is pressed against the main body part (1) by the weight of the cartridge (2) and the water in the cartridge (2), and therefore the cartridge (2) is unlikely to come off from the main body part (1) even when water pressure is applied.

[0022] Note that the reference symbols in parentheses above are intended to indicate the reference symbols of components in the embodiments described below as an example of the present disclosure, and are not intended to limit the present disclosure to the aspects of the embodiments. Effect of the Invention

[0023] In this manner, the water purifier according to the present disclosure allows components for purifying the raw water to be easily attached and detached. [Brief description of the drawings]

[0024] [Figure 1] FIG. 1 is a perspective view showing a state in which a water purifier according to the present embodiment is connected to a water supply appliance. [Diagram 2] FIG. 2 is a diagram for explaining attachment and detachment of the cartridge to and from the main body portion. [Diagram 3] FIG. 3 is a front view of the main body. [Figure 4] FIG. 4 is a right side view of the main body. [Diagram 5] FIG. 5 is a left side view of the main body. [Figure 6] FIG. 6 is a plan view of the main body. [Figure 7] FIG. 7 is a bottom view of the main body. [Figure 8] FIG. 8 is a right side view of the cartridge. [Figure 9] FIG. 9 is a bottom view of the cartridge. [Figure 10] FIG. 10 is an exploded view of the main body showing the main body side connecting portion in the off state. [Figure 11] FIG. 11 is an exploded view of the main body showing the main body side coupling part in the on state. [Figure 12] FIG. 12 is a diagram showing a schematic cross-sectional shape of a connecting portion between the main body and the cartridge in the on state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Hereinafter, an exemplary embodiment will be described with reference to the drawings. The x-axis direction, y-axis direction, and z-axis direction in each drawing correspond to each other. The x-axis direction, y-axis direction, and z-axis direction are perpendicular to each other, and the z-axis direction is approximately vertically upward. Note that the same or corresponding parts in each drawing are given the same reference numerals, and duplicated explanations will be omitted.

[0026] [Overall configuration] FIG. 1 is a perspective view showing a state in which a water purifier 100 according to this embodiment is connected to a water supply device W. FIG. 2 is a diagram for explaining attachment and detachment of a main body 1 and a cartridge 2. The water purifier 100 shown in FIGS. 1 and 2 is a device that purifies raw water supplied from a water supply device W such as a water faucet to produce purified water. The water supply device W discharges raw water approximately vertically downward. The water purifier 100 includes a main body 1 connected to the water supply device W, and a cartridge 2 that is detachable from the main body 1. The cartridge 2 contains a purification material C that purifies the raw water to produce purified water.

[0027] The water purifier 100 can be switched between a raw water mode in which raw water supplied from the water supply device W is not purified and is discharged as raw water, and a purified water mode in which raw water supplied from the water supply device W is purified and discharged as purified water. The water purifier 100 switches between the raw water mode and the purified water mode by operating a raw water / purified water switching lever L1 provided on the main body part 1. In the raw water mode, raw water supplied from the water supply device W flows into the main body part 1 and is discharged from the main body part 1 as it is without being sent to the cartridge 2. On the other hand, in the purified water mode, raw water supplied from the water supply device W flows into the main body part 1, is sent to the cartridge 2 connected to the main body part 1, and is purified in the cartridge 2 to become purified water. The purified water is then sent again to the main body part 1 and discharged from the main body part 1.

[0028] The water purifier 100 can be switched between a shower mode in which raw water or purified water is discharged in a shower-like manner and a straight mode in which raw water or purified water is discharged in a straight manner. The water purifier 100 switches between the shower mode and the straight mode by operating a shower / straight switching lever L2 provided on the main body 1. In the shower mode, the raw water or purified water is discharged in a shower-like manner from a large number of small, discrete openings in the discharge section 13, which will be described later. On the other hand, in the straight mode, the raw water or purified water is discharged in a straight manner from a small number of large, concentrated openings in the discharge section 13, which will be described later.

[0029] Fig. 3 is a front view of the main body 1. Fig. 4 is a right side view of the main body 1. Fig. 5 is a left side view of the main body 1. Fig. 6 is a plan view of the main body 1. Fig. 7 is a bottom view of the main body 1. As shown in Fig. 2 and Figs. 3 to 7, the main body 1 is a component that is directly connected to the water supply device W. The main body 1 includes a raw water inlet section 10, a raw water supply section 11, a purified water receiving section 12, a discharge section 13, a main body side connecting section 14, a connection operation section 15, a raw water / purified water switching lever L1, and a shower / straight switching lever L2.

[0030] The raw water inlet section 10 is a section into which raw water flows in from the water supply fixture W. The raw water inlet section 10 has a fixing section for fixing the main body section 1 to the water supply fixture W. The fixing section may fix the main body section 1 to the water supply fixture W, for example, by gripping or clamping the tip of a faucet of the water supply fixture W.

[0031] The raw water supply section 11 is a section that supplies raw water flowing in from the water supply appliance W to the cartridge 2. The raw water supply section 11 can be communicated with the raw water inlet section 10 inside the main body section 1, and raw water that flows into the raw water inlet section 10 from the water supply appliance W is sent to the raw water supply section 11. The raw water supply section 11 is connected to the raw water receiving section 20 of the cartridge 2 as described below, thereby making it possible to supply raw water to the raw water receiving section 20 of the cartridge 2.

[0032] The purified water receiving section 12 is a section that receives the purified water that has passed through the cartridge 2. The purified water receiving section 12 is connected to the purified water supply section 22 of the cartridge 2 as described below, thereby being able to receive the purified water from the purified water supply section 22 of the cartridge 2.

[0033] The discharge section 13 is a section that discharges raw water or purified water. The discharge section 13 can communicate with the purified water receiving section 12 inside the main body section 1, and discharges the purified water when purified water that has passed through the cartridge 2 is sent from the purified water receiving section 12. The discharge section 13 can also communicate with the raw water inlet section 10 inside the main body section 1, and discharges raw water that has flowed in from the water supply device W. The discharge section 13 can achieve a raw water mode by being in communication with the raw water inlet section 10, and can achieve a purified water mode by being in communication with the purified water receiving section 12. The discharge section 13 switches between the raw water mode and the purified water mode by operating the raw water / purified water switching lever L1.

[0034] The discharge section 13 is formed with shower openings H1, which are small and numerous discrete openings, and straight openings H2, which are large and numerous collective openings (FIG. 7). The discharge section 13 switches between a shower mode in which raw water or purified water is discharged from the shower opening H1 and a straight mode in which raw water or purified water is discharged from the straight opening H2 by operating the shower / straight switching lever L2.

[0035] The main body side connecting part 14 is a part used for connecting with the cartridge 2. The main body side connecting part 14 is connected with the cartridge side connecting part 23 of the cartridge 2. The main body side connecting part 14 has a main body side raw water pipe 14A, a main body side purified water pipe 14B, a raw water supply side fastener 14C, and a purified water receiving side fastener 14D.

[0036] The main body side raw water pipe 14A is a pipe connected to the raw water supply unit 11. The main body side raw water pipe 14A communicates with the raw water supply unit 11, and raw water is supplied from the water supply fixture W via the raw water supply unit 11. The main body side raw water pipe 14A is provided inside a raw water pipe side recess 1A, which is a recess formed on the outer surface of the main body 1 (the surface in contact with or facing the cartridge 2).

[0037] Here, a first central axis CL1 is defined for the main body side raw water pipe 14A. The "first central axis" is the central axis of the main body side raw water pipe 14A along the direction in which the end side portion of the main body side raw water pipe 14A that connects to the cartridge side raw water pipe 23A described later extends (FIGS. 10 and 11). The first central axis CL1 passes through the inside of the raw water pipe side recess 1A.

[0038] The main body side purified water pipe 14B is a pipe that connects to the purified water receiving part 12. The main body side purified water pipe 14B communicates with the purified water receiving part 12, and sends purified water from the cartridge 2 to the purified water receiving part 12. The main body side purified water pipe 14B is provided inside the purified water pipe side recess 1B, which is a recess formed on the outer surface of the main body 1 (the surface that contacts or faces the cartridge 2).

[0039] Here, a second central axis CL2 is defined for the main body side purified water pipe 14B. The "second central axis" refers to the central axis of the main body side purified water pipe 14B along the direction in which the end portion of the main body side purified water pipe 14B that connects to the cartridge side purified water pipe 23B described later extends (FIGS. 10 and 11). The second central axis CL2 may be parallel to the first central axis CL1. The second central axis CL2 passes through the inside of the purified water pipe side recess 1B. The area of ​​the inner part of the raw water pipe side recess 1A in a plane perpendicular to the first central axis CL1 is configured to be larger than the area of ​​the inner part of the purified water pipe side recess 1B in a plane perpendicular to the second central axis CL2. For example, the raw water pipe side recess 1A is a bottomed cylindrical space with the first central axis CL1 as the central axis in the height direction, and the purified water pipe side recess 1B is a bottomed cylindrical space with the second central axis CL2 as the central axis in the height direction, and the diameter of the raw water pipe side recess 1A is larger than the diameter of the purified water pipe side recess 1B. Note that the depth of the raw water pipe side recess 1A in the direction of the first central axis CL1 may be deeper than the depth of the purified water pipe side recess 1B in the direction of the second central axis CL2. In this case, the length of the cartridge side raw water pipe 23A may be shorter than the length of the cartridge side purified water pipe 23B.

[0040] The raw water supply side fastener 14C is a fastener for connecting to the raw water receiving side fastener 23C of the cartridge side connecting portion 23 described later in the raw water supply section 11. The raw water supply side fastener 14C is configured to be able to engage and disengage with the raw water receiving side fastener 23C. The raw water supply side fastener 14C is rotatable about the first central axis in a groove formed in the circumferential direction on the inner peripheral surface of the raw water pipe side recess 1A. As a result, the raw water supply side fastener 14C engages and disengages with the raw water receiving side fastener 23C by rotating about the first central axis CL1. The main body side connecting portion 14 has a plurality of raw water supply side fasteners 14C (here, two).

[0041] The purified water receiving side fastener 14D is a fastener for connecting to the purified water supply side fastener 23D of the cartridge side connecting portion 23 described later in the purified water receiving portion 12. The purified water receiving side fastener 14D is configured to be able to engage and disengage with the purified water supply side fastener 23D. The purified water receiving side fastener 14D can rotate around the first central axis in a groove formed in the circumferential direction on the inner peripheral surface of the raw water pipe side recess 1A. As a result, the purified water receiving side fastener 14D engages and disengages with the purified water supply side fastener 23D by rotating around the first central axis CL1. The main body side connecting portion 14 has a single purified water receiving side fastener 14D.

[0042] The purified water receiving side fastener 14D is provided at a position deeper than the raw water supply side fastener 14C in the direction of the second central axis CL2. More specifically, based on the surface where the main body 1 contacts or faces the cartridge 2, the distance from the surface to the position of the purified water receiving side fastener 14D measured toward the main body 1 along the direction of the second central axis CL2 is greater than the distance from the surface to the position of the raw water supply side fastener 14C measured toward the main body 1 along the direction of the first central axis CL1.

[0043] The connection operation unit 15 is a part for performing a connection operation to switch between an OFF state and an ON state. The "OFF state" is a state in which the main body 1 and the cartridge 2 are not connected. On the other hand, the "ON state" is a state in which the main body 1 and the cartridge 2 are connected. In the ON state, the main body 1 and the cartridge 2 are fixed to each other so that they do not come off (the cartridge 2 does not come off from the main body 1). The connection operation is an operation of rotating the raw water supply side fastener 14C and the purified water receiving side fastener 14D about the first central axis CL1.

[0044] FIG. 8 is a right side view of the cartridge 2. FIG. 9 is a bottom view of the cartridge 2. As shown in FIG. 2, FIG. 8, and FIG. 9, the cartridge 2 is a part that is indirectly connected to the water supply appliance W via the main body 1. The cartridge 2 has a flat rectangular parallelepiped shape. The cartridge 2 is connected to the main body 1. At this time, the cartridge 2 is disposed at a position above the main body 1 when the main body 1 is connected to the water supply appliance W. Also, at this time, the cartridge 2 is disposed at a position to the side of the end part of the water supply appliance W that is connected to the main body 1 and does not intersect with the third central axis CL3 when the main body 1 is connected to the water supply appliance W. The "third central axis" is the central axis of the raw water in the direction in which the raw water flows from the water supply appliance W to the main body 1 (FIG. 1). The cartridge 2 includes a raw water receiving section 20, a purification material built-in section 21, a purified water supply section 22, a cartridge side connecting section 23, and a purification material C.

[0045] The raw water receiving section 20 is a section that receives the raw water conveyed by the raw water conveying section 11. More specifically, the raw water receiving section 20 is a section that receives, from the raw water conveying section 11 of the main body section 1, the raw water that has flowed into the main body section 1 from the water supply device W.

[0046] The purification material-containing portion 21 is a portion that can contain a purification material C that purifies the raw water received by the raw water receiving portion 20. The purification material-containing portion 21 may be, for example, a cavity formed inside the cartridge 2. The purification material-containing portion 21 communicates with the raw water receiving portion 20 inside the cartridge 2. The purification material C purifies the raw water to make it purified water, and may be composed of, for example, activated carbon, a hollow fiber membrane, a reverse osmosis membrane, or the like. The purification material C may be attachable to and detachable from the purification material-containing portion 21.

[0047] The purified water supply unit 22 is a part that supplies purified water obtained by purifying raw water with the purification material C to the main body 1. The purified water supply unit 22 communicates with the purification material built-in unit 21 inside the cartridge 2. The purified water supply unit 22 is connected to the purified water receiving unit 12 of the main body 1, thereby making it possible to supply purified water to the purified water receiving unit 12 of the main body 1.

[0048] The cartridge side connecting part 23 is a part used for connecting to the main body part 1. The cartridge side connecting part 23 is connected to the main body part side connecting part 14 of the main body part 1. When the main body part side connecting part 14 and the cartridge side connecting part 23 satisfy a predetermined condition, the main body part 1 and the cartridge 2 are connected. The cartridge side connecting part 23 has a cartridge side raw water pipe 23A, a cartridge side purified water pipe 23B, a raw water receiving side fastener 23C, and a purified water supply side fastener 23D.

[0049] The cartridge side raw water pipe 23A is a pipe connected to the raw water receiving section 20. The cartridge side raw water pipe 23A communicates with the purification material built-in section 21 on the upstream side of the purification material built-in section 21, and sends raw water from the main body section 1 to the purification material built-in section 21. The cartridge side raw water pipe 23A is configured to have a larger diameter than the main body side raw water pipe 14A, and is connected to the main body side raw water pipe 14A by inserting the main body side raw water pipe 14A into the cartridge side raw water pipe 23A.

[0050] The cartridge side purified water pipe 23B is a pipe connected to the purified water supply section 22. The cartridge side purified water pipe 23B communicates with the purification material built-in section 21 on the downstream side of the purification material built-in section 21, and sends purified water from the purification material built-in section 21 to the purified water receiving section 12 of the main body section 1. The cartridge side purified water pipe 23B is configured to have a larger diameter than the main body side purified water pipe 14B, and is connected by inserting the main body side purified water pipe 14B into the cartridge side purified water pipe 23B.

[0051] The raw water receiving side fastener 23C is a fastener for connecting to the raw water supply side fastener 14C of the main body side connecting portion 14 in the raw water receiving portion 20. The raw water receiving side fastener 23C is configured to be able to engage and disengage with the raw water supply side fastener 14C. The cartridge side connecting portion 23 includes a plurality of raw water receiving side fasteners 23C (here, two) equal in number to the raw water supply side fasteners 14C. As a result, each raw water supply side fastener 14C and each raw water receiving side fastener 23C are engaged with each other in a one-to-one relationship.

[0052] The purified water supply side fastener 23D is a fastener for connecting to the purified water receiving side fastener 14D of the main body side connecting portion 14 in the purified water supply section 22. The purified water supply side fastener 23D is configured to be able to engage and disengage with the purified water receiving side fastener 14D. Here, the purified water receiving side fastener 14D is configured integrally with the raw water supply side fastener 14C. The cartridge side connecting portion 23 includes a single purified water supply side fastener 23D.

[0053] With such a cartridge 2 connected to the main body 1, when the main body 1 is connected to the water supply device W, the third central axis CL3 substantially coincides with the fourth central axis CL4. The "fourth central axis" is the central axis of purified water in the direction in which purified water is discharged from the discharge portion 13 in the shower mode (FIG. 1). That is, in this case, the discharge portion 13 is disposed at a position overlapping with the third central axis CL3.

[0054] [Concatenation operation] The operation of connecting the main body 1 and the cartridge 2 will be described. FIG. 10 is an exploded view of the main body 1 showing the main body side connecting part 14 in the OFF state. FIG. 11 is an exploded view of the main body 1 showing the main body side connecting part 14 in the ON state. FIG. 12 is a schematic diagram showing the cross-sectional shape of the connecting part of the main body 1 and the cartridge 2 in the ON state. As shown in FIG. 2 and FIG. 10 to FIG. 12, the main body 1 and the cartridge 2 are connected by the engagement of the raw water supply side fastener 14C and the raw water receiving side fastener 23C and the engagement of the purified water supply side fastener 23D and the purified water receiving side fastener 14D. That is, by connecting the main body 1 and the cartridge 2, the main body side raw water pipe 14A and the cartridge side raw water pipe 23A are connected, and raw water can flow between the main body 1 and the cartridge 2. Furthermore, by connecting the main body 1 and the cartridge 2, the main body side purified water pipe 14B and the cartridge side purified water pipe 23B are connected, allowing purified water to flow between the main body 1 and the cartridge 2. For simplification, only one each of the raw water supply side fastener 14C and the raw water receiving side fastener 23C is shown in Fig. 12.

[0055] A communication part 1C that communicates between the raw water pipe side recess 1A and the purified water pipe side recess 1B is formed in the main body 1. The communication part 1C is a space formed inside the main body 1.

[0056] As described above, the raw water supply side fastener 14C and the purified water receiving side fastener 14D are integrally configured. The raw water supply side fastener 14C and the purified water receiving side fastener 14D, which are integrally configured, rotate about the first central axis CL1, so that the raw water supply side fastener 14C engages and disengages with the raw water receiving side fastener 23C, and the purified water receiving side fastener 14D engages and disengages with the purified water supply side fastener 23D. More specifically, when the raw water supply side fastener 14C engages with the raw water receiving side fastener 23C, the purified water receiving side fastener 14D also engages with the purified water supply side fastener 23D. On the other hand, when the raw water supply side fastener 14C disengages from the raw water receiving side fastener 23C, the purified water receiving side fastener 14D also disengages from the purified water supply side fastener 23D.

[0057] The raw water supply side fastener 14C and the purified water receiving side fastener 14D are integrally formed such that the central axis of the raw water supply side fastener 14C (main body side raw water pipe 14A) coincides with the first central axis CL1. As a result, when the raw water supply side fastener 14C and the purified water receiving side fastener 14D integrally formed rotate around the first central axis CL1, the raw water supply side fastener 14C rotates on the spot, while the purified water receiving side fastener 14D revolves around the first central axis CL1 located at a position separated from the purified water receiving side fastener 14D. At this time, the purified water receiving side fastener 14D moves through the communication portion 1C formed in the main body 1. As a result, the purified water receiving side fastener 14D is located in the raw water pipe side recess 1A in the OFF state, and is located in the purified water pipe side recess 1B in the ON state. The raw water supply side fastener 14C is located in the raw water pipe side recess 1A in both the OFF state and the ON state. In other words, in the OFF state, the raw water supply side fastener 14C and the purified water receiving side fastener 14D are located in the raw water pipe side recess 1A, and in the ON state, the raw water supply side fastener 14C is located in the raw water pipe side recess 1A and the purified water receiving side fastener 14D is located in the purified water pipe side recess 1B via the communication part 1C.

[0058] In the OFF state, the raw water supply side fastener 14C is disengaged from the raw water receiving side fastener 23C, and the purified water supply side fastener 23D is disengaged from the purified water receiving side fastener 14D. When the OFF state is switched to the ON state, the raw water supply side fastener 14C and the raw water receiving side fastener 23C are engaged inside the raw water pipe side recess 1A, and the purified water supply side fastener 23D and the purified water receiving side fastener 14D are engaged inside the purified water pipe side recess 1B. This connects the main body 1 and the cartridge 2. However, in Figure 12, the raw water receiving side fastener 23C and the purified water supply side fastener 23D are arranged in the same direction for the purpose of explaining the operation, but in the water purifier 100 of this embodiment, the directions in which the raw water receiving side fastener 23C and the purified water supply side fastener 23D are actually arranged are shifted by approximately 90 degrees around the first central axis.

[0059] The integrally constructed raw water supply side fastener 14C and purified water receiving side fastener 14D are further provided with a connection operation part 15. Thus, like the raw water supply side fastener 14C and the purified water receiving side fastener 14D, the connection operation part 15 can also rotate about the first central axis CL1. The connection operation part 15 is exposed to the outer surface of the main body 1, and by sliding the connection operation part 15 so as to revolve around the first central axis CL1, the raw water supply side fastener 14C and the purified water receiving side fastener 14D rotate about the first central axis CL1, switching between an ON state and an OFF state.

[0060] [Action and Effects] As described above, the water purifier 100 includes a main body 1 connected to a water supply appliance W and a cartridge 2 detachable from the main body 1, and purifies raw water supplied from the water supply appliance W in the cartridge 2 to produce purified water. The main body 1 includes a raw water inlet 10 into which raw water flows from the water supply appliance W, a raw water supply section 11 that supplies raw water to the cartridge 2, a purified water receiving section 12 that receives purified water that has passed through the cartridge 2, and a discharge section 13 that discharges raw water or purified water, as well as a water supply section 14 that is used to connect the cartridge 2 and the raw water inlet 10. The cartridge 2 comprises a raw water receiving section 20 that receives the raw water delivered by the raw water delivery section 11, a purification material built-in section 21 that can incorporate a purification material C that purifies the raw water received by the raw water receiving section 20, a purified water delivery section 22 that delivers purified water obtained by purifying the raw water with the purification material C to the main body section 1, and a cartridge side connecting section 23 used to connect to the main body section 1, and the main body section 1 and the cartridge 2 are connected when the main body side connecting section 14 and the cartridge side connecting section 23 satisfy a predetermined condition.

[0061] According to the water purifier 100, raw water flowing into the main body 1 from the water supply device W is once sent to the cartridge 2, purified in the cartridge 2, and then returned to the main body 1 and released as purified water. Here, the main body 1 and the cartridge 2 are connected when the main body side connecting part 14 provided on the main body 1 and the cartridge side connecting part 23 provided on the cartridge 2 satisfy a predetermined condition. In other words, the main body 1 and the cartridge 2 can be easily attached and detached. Thus, according to this water purifier 100, the components for purifying the raw water can be easily attached and detached.

[0062] In the water purifier 100, the main body 1 includes a connection operation unit 15 for performing a connection operation to switch between an OFF state, in which the main body 1 and the cartridge 2 are not connected, and an ON state, in which the main body 1 and the cartridge 2 are connected. This makes it even easier to attach and detach components for purifying raw water.

[0063] In the water purifier 100, the main body side connecting part 14 includes a raw water supply side fastener 14C associated with the raw water supply part 11 and a purified water receiving side fastener 14D associated with the purified water receiving part 12, and the cartridge side connecting part 23 includes a raw water receiving side fastener 23C associated with the raw water receiving part 20 and a purified water supply side fastener 23D associated with the purified water supply part 22, and the main body part 1 and the cartridge 2 are connected by the engagement between the raw water supply side fastener 14C and the raw water receiving side fastener 23C and the engagement between the purified water supply side fastener 23D and the purified water receiving side fastener 14D. This allows the main body part 1 and the cartridge 2 to be easily attached and detached.

[0064] In the water purifier 100, the main body side connecting part 14 includes the main body side raw water pipe 14A connected to the raw water supply part 11 and the main body side purified water pipe 14B connected to the purified water receiving part 12, and the cartridge side connecting part 23 includes the cartridge side raw water pipe 23A connected to the raw water receiving part 20 and having a larger diameter than the main body side raw water pipe 14A, and the cartridge side purified water pipe 23B connected to the purified water supply part 22 and having a larger diameter than the main body side purified water pipe 14B, and by connecting the main body part 1 and the cartridge 2, the main body side raw water pipe 14A and the cartridge side raw water pipe 23A are connected, and the main body side purified water pipe 14B and the cartridge side purified water pipe 23B are connected. This allows water to be reliably supplied and received between the main body part 1 and the cartridge 2.

[0065] In the water purifier 100, the main body side raw water pipe 14A is provided inside the raw water pipe side recess 1A, which is a recess formed on the outer surface of the main body 1, the main body side purified water pipe 14B is provided inside the purified water pipe side recess 1B, which is a recess formed on the outer surface of the main body 1, the raw water supply side fastener 14C and the raw water receiving side fastener 23C are engaged inside the raw water pipe side recess 1A, and the purified water supply side fastener 23D and the purified water receiving side fastener 14D are engaged inside the purified water pipe side recess 1B. This allows the main body 1 and the cartridge 2 to be stably connected, since the engagement points between the raw water supply side fastener 14C and the raw water receiving side fastener 23C and the engagement points between the purified water supply side fastener 23D and the purified water receiving side fastener 14D are not exposed.

[0066] In the water purifier 100, the first central axis CL1, which is the central axis of the main body side raw water pipe 14A along the direction in which the end side portion of the main body side raw water pipe 14A that connects to the cartridge side raw water pipe 23A extends, passes inside the raw water pipe side recess 1A, and the second central axis CL2, which is the central axis of the main body side purified water pipe 14B along the direction in which the end side portion of the main body side purified water pipe 14B that connects to the cartridge side purified water pipe 23B extends, passes inside the purified water pipe side recess 1B, and the area of ​​the inner part of the raw water pipe side recess 1A in a plane perpendicular to the first central axis CL1 is larger than the area of ​​the inner part of the purified water pipe side recess 1B in a plane perpendicular to the second central axis CL2. This makes it easier to thicken the raw water side pipe, which is upstream compared to the purified water side and tends to have higher water pressure, and therefore makes it easier to reduce the water pressure inside the pipe.

[0067] In the water purifier 100, the depth of the raw water pipe recess 1A in the direction of the first central axis CL1, which is the central axis of the main body side raw water pipe 14A along the direction in which the end portion of the main body side raw water pipe 14A that connects to the cartridge side raw water pipe 23A extends, is deeper than the depth of the purified water pipe recess 1B in the direction of the second central axis CL2, which is the central axis of the main body side purified water pipe 14B along the direction in which the end portion of the main body side purified water pipe 14B that connects to the cartridge side purified water pipe 23B extends, and the length of the cartridge side raw water pipe 23A is shorter than the length of the cartridge side purified water pipe 23B. This ensures that water can be sent and received between the main body 1 and the cartridge 2.

[0068] In the water purifier 100, the main body 1 is formed with a communication part 1C that communicates the raw water pipe side recess 1A and the purified water pipe side recess 1B, and in the OFF state, the raw water supply side fastener 14C and the purified water receiving side fastener 14D are located in the raw water pipe side recess 1A, and in the ON state, the raw water supply side fastener 14C is located in the raw water pipe side recess 1A, and the purified water receiving side fastener 14D is located in the purified water pipe side recess 1B via the communication part 1C. This allows a compact configuration of the mechanism for easily attaching and detaching the main body 1 and the cartridge 2.

[0069] In the water purifier 100, the purified water receiving side fastener 14D is provided at a deeper position in the direction of the second central axis CL2 than the raw water supply side fastener 14C. This allows the mechanism for easily attaching and detaching the main body 1 and the cartridge 2 to be configured in a compact manner.

[0070] In the water purifier 100, the raw water supply side fastener 14C and the purified water receiving side fastener 14D are rotatable about the first central axis CL1 in a groove formed in the circumferential direction on the inner peripheral surface of the raw water pipe side recess 1A, and the connecting operation is an operation of rotating the raw water supply side fastener 14C and the purified water receiving side fastener 14D about the first central axis CL1. This allows a compact configuration of the mechanism for easily attaching and detaching the main body 1 and the cartridge 2.

[0071] In the water purifier 100, the main body side connecting part 14 includes a plurality of raw water supply side fasteners 14C and a single purified water receiving side fastener 14D, and the cartridge side connecting part 23 includes a plurality of raw water receiving side fasteners 23C, the same number as the raw water supply side fasteners 14C, and a single purified water supply side fastener 23D, and each of the raw water supply side fasteners 14C and each of the raw water receiving side fasteners 23C are engaged with each other in a one-to-one relationship. This allows the main body 1 and the cartridge 2 to be reliably connected, since the number of fasteners on the raw water side, which is upstream compared to the purified water side and prone to high water pressure, is increased. In addition, the structure can be simplified, since only a single fastener is required on the purified water side, which is downstream compared to the raw water side and prone to high water pressure.

[0072] In the water purifier 100, the discharge unit 13 can be switched between a shower mode in which purified water is discharged in a shower shape and a straight mode in which purified water is discharged in a straight shape. This improves convenience.

[0073] In the water purifier 100, the cartridge 2 is coupled to the main body 1, and when the main body 1 is connected to the water supplying device W, the cartridge 2 is disposed at a position to the side of the end portion of the water supplying device W that is connected to the main body 1, and at a position that does not intersect with the third central axis CL3 that is the central axis of the raw water in the direction in which the raw water flows from the water supplying device W into the main body 1. This allows the cartridge 2 to be disposed at a position that is unlikely to get in the way when the water supplying device W is used.

[0074] In the water purifier 100, the third central axis CL3 approximately coincides with the fourth central axis CL4, which is the central axis of purified water in the direction in which purified water is discharged from the discharge part 13 in the shower mode, and the discharge part 13 is disposed at a position overlapping with the third central axis CL3. In this way, purified water is discharged from the water purifier 100 at a position approximately coinciding with the position at which raw water is discharged from the water supply device W when the water purifier 100 is not attached, so there is little discomfort during use.

[0075] In the water purifier 100, the water supply device W discharges raw water substantially vertically downward, and the cartridge 2 is connected to the main body 1 and is disposed at a position above the main body 1 in a state in which the main body 1 is connected to the water supply device W. In this manner, the cartridge 2 is pressed against the main body 1 by the weight of the cartridge 2 and the water in the cartridge 2, so that the cartridge 2 is unlikely to come off from the main body 1 even when water pressure is applied.

[0076] [Variations] The above-described embodiment can be implemented in various forms that are modified or improved based on the knowledge of those skilled in the art.

[0077] For example, the method of connecting the main body 1 and the cartridge 2 is not limited to connection by fasteners, and may be connection by screws, magnets, or the like.

[0078] Also, the depth of the raw water pipe side recess 1A in the direction of the first central axis CL1 may be shallower than the depth of the purified water pipe side recess 1B in the direction of the second central axis CL2. In this case, the length of the cartridge side raw water pipe 23A may be longer than the length of the cartridge side purified water pipe 23B. In this way, in the water purifier 100, the depth of the raw water pipe side recess 1A in the direction of the first central axis CL1, which is the central axis of the main body side raw water pipe 14A along the direction in which the end side part of the main body side raw water pipe 14A that connects to the cartridge side raw water pipe 23A extends, is shallower than the depth of the purified water pipe side recess 1B in the direction of the second central axis CL2, which is the central axis of the main body side purified water pipe 14B along the direction in which the end side part of the main body side purified water pipe 14B that connects to the cartridge side purified water pipe 23B extends, and the length of the cartridge side raw water pipe 23A is longer than the length of the cartridge side purified water pipe 23B. This ensures that water can be supplied and received between the main body 1 and the cartridge 2. [Explanation of symbols]

[0079] 1 Main unit 1A Raw water pipe side recess 1B Purified water pipe side recess 1C Communication part 10 Raw water inlet 11 Raw water supply section 12 Purified water receiving section 13 Emission part 14 Main body side connection part 14A Main body side raw water pipe 14B Main unit side water purification pipe 14C Raw water supply side fastener 14D Purified water receiving side fastener 15 Connection operation section 2 Cartridge 20 Raw water receiving section 21 Purification material built-in part 22 Purified Water Supply Section 23 Cartridge side connection part 23A Cartridge side raw water pipe 23B Cartridge side water purification tube 23C Raw water receiving side fastener 23D Purified water supply side fastener 100 Water Purifier C Purification material CL1 1st center axis line CL2 2nd center axis CL3 3rd center axis CL4 4th center axis W Water Supply Equipment

Claims

1. A water purifier comprising a main body connected to a water supply device and a cartridge detachable from the main body, the water purifier purifying raw water supplied from the water supply device in the cartridge to produce purified water, The main body portion is A raw water inlet into which the raw water flows from the water supply equipment; a raw water supply unit that supplies the raw water to the cartridge; A purified water receiving section that receives the purified water that has passed through the cartridge; A discharge section that discharges the raw water or the purified water; a main body side connecting portion used for connecting to the cartridge, The cartridge comprises: A raw water receiving section that receives the raw water conveyed by the raw water conveying section; A purification material-containing portion capable of containing a purification material for purifying the raw water received by the raw water receiving portion; A purified water supply unit that supplies the purified water obtained by purifying the raw water using the purification material to the main body unit; a cartridge side connecting portion used for connecting to the main body portion, The water purifier, wherein the main body and the cartridge are connected together when the main body side connecting portion and the cartridge side connecting portion satisfy a predetermined condition.

2. The water purifier of claim 1, wherein the main body portion is provided with a connection operation portion for performing a connection operation to switch between an off state in which the main body portion and the cartridge are not connected, and an on state in which the main body portion and the cartridge are connected.

3. The main body side connecting portion is A raw water supply side fastener for the raw water supply section; A purified water receiving side fastener for the purified water receiving portion, The cartridge side connecting portion is A raw water receiving side fastener for the raw water receiving portion; A purified water supply side fastener for the purified water supply unit, The water purifier according to claim 2 , wherein the main body and the cartridge are connected by engagement between the raw water supply side fastener and the raw water receiving side fastener and engagement between the purified water supply side fastener and the purified water receiving side fastener.

4. The main body side connecting portion is A main body side raw water pipe connected to the raw water supply unit; A main body side purified water pipe connected to the purified water receiving portion, The cartridge side connecting portion is a cartridge-side raw water pipe connected to the raw water receiving portion and having a larger diameter than the main body-side raw water pipe; a cartridge side purified water pipe connected to the purified water supply unit and having a larger diameter than the main body side purified water pipe; The water purifier of claim 3, wherein the main body and the cartridge are connected to connect the main body side raw water pipe and the cartridge side raw water pipe, and to connect the main body side purified water pipe and the cartridge side purified water pipe.

5. The main body side raw water pipe is provided inside a raw water pipe side recess which is a recess formed on the outer surface of the main body, The main body side purified water pipe is provided inside a purified water pipe side recess which is a recess formed on the outer surface of the main body, The raw water supply side fastener and the raw water receiving side fastener are engaged with each other on the inside of the raw water pipe side recess, The water purifier according to claim 4 , wherein the purified water supply side fastener and the purified water receiving side fastener are engaged with each other on the inside of the purified water pipe side recess.

6. a first central axis, which is a central axis of the main body side raw water pipe along a direction in which an end portion of the main body side raw water pipe that is connected to the cartridge side raw water pipe extends, passes through an inside of the raw water pipe side recess, a second central axis of the main body side purification tube along a direction in which an end portion of the main body side purification tube that is connected to the cartridge side purification tube extends, the second central axis of the main body side purification tube passes through an inside of the purification tube side recess, The water purifier according to claim 5 , wherein an area of ​​an inner portion of the raw water pipe side recess in a plane perpendicular to the first central axis is larger than an area of ​​an inner portion of the purified water pipe side recess in a plane perpendicular to the second central axis.

7. the depth of the raw water pipe side recess in the direction of a first central axis, which is the central axis of the main body side raw water pipe along the direction in which the end portion of the main body side raw water pipe that connects to the cartridge side raw water pipe extends, is deeper than the depth of the purified water pipe side recess in the direction of a second central axis, which is the central axis of the main body side purified water pipe along the direction in which the end portion of the main body side purified water pipe that connects to the cartridge side purified water pipe extends; The water purifier according to claim 5 , wherein a length of the cartridge side raw water pipe is shorter than a length of the cartridge side purified water pipe.

8. a depth of the raw water pipe side recess in the direction of a first central axis, which is the central axis of the main body side raw water pipe along the direction in which the end portion of the main body side raw water pipe that connects to the cartridge side raw water pipe extends, is shallower than a depth of the purified water pipe side recess in the direction of a second central axis, which is the central axis of the main body side purified water pipe along the direction in which the end portion of the main body side purified water pipe that connects to the cartridge side purified water pipe extends; The water purifier according to claim 5 , wherein a length of the cartridge side raw water pipe is longer than a length of the cartridge side purified water pipe.

9. A communication portion is formed in the main body portion, the communication portion communicating the raw water pipe side recess and the purified water pipe side recess, In the off state, The raw water supply side fastener and the purified water receiving side fastener are located in the raw water pipe side recess, In the on state, The raw water supply side fastener is located in the raw water pipe side recess, The water purifier according to claim 6 , wherein the purified water receiving side fastener is positioned in the purified water pipe side recess via the communication portion.

10. The water purifier according to claim 9 , wherein the purified water receiving side fastener is provided at a deeper position than the raw water supply side fastener in the direction of the second central axis.

11. The raw water supply side fastener and the purified water receiving side fastener are rotatable about the first central axis within a groove formed in a circumferential direction on an inner peripheral surface of the raw water pipe side recess, The water purifier according to claim 10, wherein the connecting operation is an operation of rotating the raw water supply side fastener and the purified water receiving side fastener about the first central axis.

12. The main body side connecting portion includes a plurality of the raw water supply side fasteners and a single purified water receiving side fastener, The cartridge side connecting portion includes a plurality of the raw water receiving side fasteners, the number of which is equal to the number of the raw water supply side fasteners, and a single purified water supply side fastener, The water purifier according to claim 5 , wherein each of the plurality of raw water supply side fasteners and each of the plurality of raw water receiving side fasteners are engaged with each other in a one-to-one relationship.

13. The water purifier according to claim 1 , wherein the discharge portion is switchable between a shower mode in which the purified water is discharged in a shower shape and a straight mode in which the purified water is discharged in a straight shape.

14. The water purifier of claim 13, wherein the cartridge is connected to the main body and, when the main body is connected to the water supply device, is positioned to the side of the end portion of the water supply device that is connected to the main body, and at a position that does not intersect with a third central axis, which is the central axis of the raw water in the direction in which the raw water flows from the water supply device into the main body.

15. The third central axis is approximately coincident with a fourth central axis which is a central axis of the purified water in a direction in which the purified water is discharged from the discharge portion in the shower mode, The water purifier according to claim 14, wherein the discharge portion is disposed at a position overlapping with the third central axis.

16. The water supply equipment discharges the raw water substantially vertically downward, The water purifier according to claim 14, wherein the cartridge is coupled to the main body and is disposed at a position above the main body when the main body is connected to the water supply appliance.

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