KR101983717B1 - Filter structure - Google Patents

Abstract

The filter structure according to an embodiment of the present invention includes a housing body 42 formed in a cylindrical shape so as to have a first accommodation space formed therein and having an upper opening portion and a housing body 42 formed in a cylindrical shape to form a second accommodation space on the lower side, A housing cap (43) coupled to an upper opening of the housing body and defining a hollow portion (435) opened on the upper side; a filtering member (44) accommodated in the first housing space; An upper supporter 80 housed in the space and accommodated in a hollow space 435 of the housing cap 43 and an outer supporter 80 provided on an outer peripheral surface of the upper supporter 80, And a first sealing member 863 contacting the inner circumferential surface of the housing cap 43 while keeping airtightness therebetween.

Description

Filter structure {Filter structure}

The present invention relates to a filter structure.

Generally, a water purifier is used for purifying water to be supplied by using a filter or a filter material, and includes a device for purifying water or water in a tank so as to be usable.

Water purifiers that supply such drinking water are representative water purifiers. In recent years, the water purifier may be provided with all or a part of such a water purifier to receive purified water through a refrigerator or make ice using the purified water.

In a refrigerator equipped with a water purification apparatus, a filter constituting a water purification apparatus is required to be replaced or inspected as required, and a filter is detachably installed for this purpose. Further, the filter can be configured to have a bypass structure capable of supplying water even when the filter is separated, so that water can be supplied even when the filter is replaced or inspected.

Korean Patent Publication No. 10-2015-0135021 discloses a head for a water filter having such a bypass structure.

However, the conventional head has a complicated structure so that the channel can be opened and closed by the channel switching plunger supported by the elastic member when the filter is attached and detached.

In addition, there is a problem in that the flow path of the flow path is complicated due to the structure of the flow path switching plunger slidingly moved, thereby deteriorating the flow performance of the water.

In addition, there may arise a problem that the performance of the elastic member is deteriorated or the flow path can not be switched when the elastic member is abnormal.

An object of the present invention is to provide a refrigerator provided with a water purification apparatus and a water purification apparatus capable of continuously supplying water by switching the bypass flow path according to the attachment / detachment of the filter.

An object of the present invention is to provide a refrigerator provided with a water purification apparatus and a water purification apparatus that have a simple bypass flow path switching structure and are improved in productivity and assembling workability.

It is an object of the present invention to provide a refrigerator including a water purification device and a water purification device in which the bypass flow path can be switched by rotating the filter.

It is an object of the present invention to provide a refrigerator provided with a water purification apparatus and a water purification apparatus which are easy to attach and detach a filter.

An object of the present invention is to provide a refrigerator having a water purification apparatus and a water purification apparatus in which the flow of water can be smoothly performed when the bypass flow path is changed by the filter desorption.

A filter structure according to an embodiment of the present invention includes a housing body which is formed in a cylindrical shape so as to form a first housing space and has an upper opening portion and a housing portion which is partially formed in a cylindrical shape to form a second housing space, A housing cap coupled to the opening portion and having a coupling protrusion and an upper opening portion formed on an outer peripheral surface thereof and having a housing fastening portion formed on one side of the inner peripheral surface; a cylindrical filtering member accommodated in the first housing space; And an upper supporter coupled to the upper surface of the filtering member and the inner surface of the housing cap, respectively, wherein the upper supporter includes: a supporter receiving portion coupled to an upper surface of the filtering member; And a second filter input is formed on an outer circumferential surface of the filtering member so that water is supplied into a space between the outer circumferential surface of the filtering member and the housing body, A first filter input flow path extending upward from the supporter step portion and communicating with the second filter input flow path is formed at a central portion of the first filter input flow path, and a pair of protruding portions are extended And a supporter extending portion formed with a filter output flow path outside the first filter input path and a supporter fastening portion coupled to the housing fastening portion to prevent rotational flow inside the housing cap.

The supporter extension part includes: a first extension part extending upward from a center of the supporter step part; And a second extension extending further above the first extension and having a smaller cross-sectional area than the first extension, wherein the filter output channel extends from the interior of the filtering member to the upper end of the first extension Can be extended.

The first extension may include a first extension O-ring, and the second extension may include a second extension O-ring.

The second filter input channel may extend laterally from a lower end of the first filter input channel.

According to another aspect of the present invention, there is provided a water purification apparatus comprising: a filter for purifying and discharging inflow water; A head for receiving the raw water and an outlet for discharging purified water, wherein the filter is detachably coupled; A filtering duct which is rotatably installed between the water inlet and the water outlet inside the head and connects the water received by the water inlet to the water outlet through the filter, A shaft on which a path passage is formed; A first connection part provided at one end of the filter; And a second connection part formed in a shape corresponding to the first connection part at the center of rotation of the shaft and coupled with the first connection part when the filter is mounted, So that the filtering passage or the bypass passage is connected to the inlet portion and the outlet portion.

The inlet and the outlet are separated from each other, and the shaft is formed so as to be in contact with the inner surface of the inlet and the inner surface of the outlet.

A pair of shaft o-rings hermetically sealed between the shaft and the inner surface of the head are formed on the circumference of the shaft above and above the openings of the water inlet and the water outlet, And the inlet / outlet of the oil passage are respectively located between the pair of shaft O-rings.

And a sealing member formed on an outer surface of the shaft to surround the inlet and the outlet of the filtering channel so as to seal the inlet and the outlet of the filtering channel and the periphery of the inlet and the outlet with the rotation of the shaft, .

The sealing member includes a press-in portion press-fitted into a sealing member mounting portion that is recessed along the periphery of the filtering channel inlet and outlet; And a sealing portion protruding along the press-in portion and contacting the inner surface of the head.

Wherein the inlet and outlet portions are formed to cross the openings of the inlet portion and the outlet portion and a sealing rib is formed to prevent the sealing member from flowing when the shaft rotates.

The plurality of sealing ribs may be formed to intersect with each other.

The head is formed such that an upper surface thereof is opened so that the shaft can be inserted from above, and an opened upper surface of the head is shielded by the head cap.

And a rotation guide is formed in the seating part to receive the rotation protrusion of the shaft and to be cut at a predetermined angle so as to guide the rotation of the shaft. do.

The filtering passage or the bypass passage is connected to the water inlet and the water outlet in a state where the rotation protrusion is in contact with the stopper at both ends of the rotation guide and is stopped.

And the inlet and the outlet are formed in a direction opposite to each other, and the inlet and the outlet of the filtering channel and the bypass channel are disposed at an angle of 90 ° along the circumference of the shaft.

The first connecting portion and the second connecting portion may be formed in a shape of a groove and a projection having shapes corresponding to each other, and may be coupled by axial movement of the filter. The first connecting portion and the second connecting portion may include a first inclined surface having an angle corresponding to both surfaces, Two inclined surfaces are formed, and the filter is formed in a fully inserted state.

And the first inclined surface and the second inclined surface are formed to be inclined in the inserting direction of the filter.

And the first inclined surface and the second inclined surface are formed to be inclined in a direction of rotation of the filter.

The first extension part and the second extension part are formed in pairs at positions facing each other.

A bottom surface of the head is opened to allow the filter to be inserted therein, and a plurality of supporting ribs protrude around the inner surface of the head to support the circumferential surface of the filter.

The filter is provided with a coupling protrusion, and an inner side surface of the head is formed with a coupling groove for coupling the coupling protrusion when the coupling protrusion rotates.

And the coupling protrusion is inserted into the coupling groove in a state where the first coupling portion and the second coupling portion are fully engaged.

And the coupling protrusion is located inside the coupling groove until the filtering flow path and the bypass flow path of the shaft are switched and connected to the inlet portion and the outlet portion.

A protrusion guide portion formed at an oblique slant is formed at one side of the coupling protrusion and a groove guide portion formed at an inner side surface of the head is inclined toward an inlet of the coupling groove and is in contact with the protrusion guide portion when the filter is inserted .

And the first connection part and the second connection part are coupled to each other when the coupling protrusion is positioned at the entrance of the coupling groove.

A water purifier according to an embodiment of the present invention includes: a head having a water inlet and a water outlet; A shaft provided inside the head and rotatably mounted between the inlet portion and the outlet portion; A bypass passage formed through the circumference of the shaft and communicating with the inlet portion and the outlet portion according to rotation of the shaft; A filter detachably attached to the head and having a filter insertion portion into which the shaft is inserted when mounted on the head; An inlet and an outlet are formed around the shaft in a direction intersecting with the bypass flow path, and a filtering flow path communicating the filter with the inlet and outlet portions according to the rotation of the shaft; And an upper supporter extending inward of the filter insertion part and forming a flow path that is coupled to the shaft and communicates with the filtering flow path.

And a channel projection portion for forming the filtering channel protrudes inside the bypass channel.

Wherein the filtering passage includes: a shaft intake flow passage for connecting raw water to the filter by connecting a shaft inlet of the shaft and an inside of the upper supporter; And a shaft outlet channel connecting the space between the inner side surfaces of the upper supporter outer side filter insert portion and the shaft outlet of the shaft to discharge purified water from the filter.

Wherein the shaft intake flow passage includes: a horizontal portion extending from the shaft inlet toward the center of the shaft; And a vertical portion formed inside the inner pipe extending downward from the center of the shaft spaced from the outer wall of the shaft.

Wherein the shaft outflow channel includes: an outflow guide portion that cuts a cylindrical outer wall of the shaft into a flat shape in a vertical direction at a position corresponding to the shaft outlet to form a space separated from the inside of the head; And an outflow guide portion connecting the upper end of the outflow guide portion and the shaft outlet.

The upper supporter includes: a supporter receiving portion fixed to an upper end of the filtering member inside the filter; A supporter stepped portion protruding from an upper surface of the supporter accommodating portion; And a supporter extension portion extending upward from the supporter step portion and connected to the shaft.

The upper supporter includes a filter input flow path communicating with the shaft intake flow path and guiding water introduced into the filter to the outside of the filtering member; And a filter output passage communicating with the shaft outflow passage and guiding the purified water inside the filtering member to the head is formed.

Wherein the filter input channel includes a first filter input channel extending downward through the filter extension unit; And a second filter input flow path branched from the first filter input flow path and extending to a side of the supporter stepped portion.

The supporter extension portion includes a first extension portion extending upward from a center of the step portion and having an outer diameter corresponding to an inner diameter of the filter insertion portion; And a second extension extending further above the first extension and having a smaller cross-sectional area than the first extension, the filter output flow path extending from the interior of the filtering member to the upper end of the first extension And is extended.

And the filter input passage is formed in the second extension portion.

And a shaft O-ring, which hermetically seals a space between the shaft and the head, is provided around the shaft above and below the inlet / outlet of the bypass passage.

And a sealing member contacting the peripheries of the water inlet and the water outlet is provided around the inlet / outlet of the filtering channel.

And a sealing rib is formed at an opening of the water inlet and the water outlet so as to cross the opening so as to be in contact with the sealing member.

In addition, a refrigerator provided with a water purification apparatus according to an embodiment of the present invention includes: a cabinet forming a storage space; A door for opening and closing the cabinet; A water purification device provided in the storage space for purifying the supplied water; And a dispenser provided in the door for extracting purified water from the outside, wherein the water purifier includes: a filter for purifying and discharging the inflow water; A head for receiving the raw water and an outlet for discharging purified water, wherein the filter is detachably coupled; A filtering duct which is rotatably installed between the water inlet and the water outlet inside the head and connects the water received by the water inlet to the water outlet through the filter, A shaft on which a path passage is formed; A first connection part provided at one end of the filter; And a second connection part formed in a shape corresponding to the first connection part at the center of rotation of the shaft and coupled with the first connection part when the filter is mounted, So that the filtering passage or the bypass passage is connected to the inlet portion and the outlet portion.

The water treatment device includes a case for housing the filter and the head, and the case is fixedly mounted on one side of the inside of the hose.

The filter may be composed of a plurality of filters, and the plurality of filters are mounted on a head unit in which a plurality of heads are connected in parallel.

The water purifier may further include a mounting member that is rotatably supported by the water inlet and the water outlet, and is fixedly mounted on the interior wall.

In the refrigerator provided with the water purification apparatus and the water purification apparatus according to the present invention, the following effects can be expected.

First, in the embodiment of the present invention, when the filter is separated from the head for replacement or maintenance of the filter, the bypass flow path connects the inlet portion and the outlet portion, . Also, since the water flow path can be maintained in a connected state by the bypass flow path, continuous water supply to the dispenser or the ice maker becomes possible, and service work such as cleaning of the flow path becomes possible, .

Secondly, in the embodiment of the present invention, the filtration flow path is connected to the water inlet and the water outlet during the rotation operation for mounting the filter so that purified water can be supplied, and when the filter is rotated, The continuous water supply is possible even when the filter is connected. In other words, it is possible to switch the flow path without additional operation by the rotary operation of mounting and separating the filter, and the convenience of use can be further improved.

Thirdly, in the embodiment of the present invention, the position where the filter is inserted can be accurately displayed on the head so that the filter can be mounted accurately, and the groove guide contacting the coupling protrusion is formed on the inner side of the head, The filter is naturally rotated to be inserted into the coupling groove. In addition, since the coupling between the coupling protrusions and the coupling groove allows the flow path of the head and the filter to be connected at the same time, it is expected that the usability is further improved.

Fourth, in the embodiment of the present invention, the first connecting portion and the second connecting portion formed at the ends of the shaft and the upper supporter are formed to be mutually engaged. When the filter is inserted in the axial direction, when the inclined surfaces are in contact with each other, So that it can be inserted. In addition, when the filter is rotated to separate the filter, the filter can be easily separated from the inclined surfaces of the first and second connection portions in a section where the rotation of the shaft is restricted, You can expect.

Fifth, in the embodiment of the present invention, since a valve structure and an elastic member for switching the flow path are not provided and the flow path can be switched only by rotation of the shaft, the structure of the product can be simplified, The effect can be expected.

In addition, it is possible to prevent malfunction due to a simple operation structure, assure a reliable operation, and improve the durability of the product.

Sixth, according to the embodiment of the present invention, the structure of the shaft can be made compact by allowing a part of the filtering channel to protrude into the bypass channel, and the size of the head on which the shaft is mounted and further, So that the capacity loss of the refrigerator can be minimized when the refrigerator is mounted on the refrigerator.

1 is a front view of a refrigerator according to an embodiment of the present invention.
2 is a front view of the door of the refrigerator.
3 is a view schematically showing an arrangement structure of water supply channels of the refrigerator.
4 is a perspective view showing the structure of the water purification apparatus.
5 is a perspective view showing a structure of a water purification apparatus according to another embodiment of the present invention.
6 is an exploded perspective view in which the filter and the head of the water purification apparatus are separated.
7 is an exploded view showing the structure of the filter.
8 is a longitudinal sectional view of Fig.
9 is a cross-sectional view taken along line 9-9 'of Fig.
10 is a sectional view taken along line 10-10 'of FIG.
11 is a partially cutaway perspective view of the upper supporter of the filter.
12 is a side view of the head.
FIG. 13 is an exploded perspective view of the coupling structure of the head seen from one side. FIG.
FIG. 14 is an exploded perspective view of the coupling structure of the head viewed from the other side. FIG.
15 is an exploded exploded perspective view of the internal structure of the head seen from one side.
16 is an exploded exploded perspective view of the internal structure of the head viewed from the other side.
17 is a perspective view of the head viewed from below.
18 is a partially cutaway perspective view of the head.
19 is a cut-away perspective view of the filter and the head separated from each other.
20 is an enlarged view of part A of Fig.
21 is a view showing the position of the shaft in a state where the filter and the head are separated.
22 is a view showing a state in which the filter is inserted into the inside of the head.
23 is a view showing a state in which the filter is completely inserted into the inside of the head.
24 is a view showing a state in which the filter is rotated for engagement in a state in which the filter is completely inserted into the inside of the head.
25 is an enlarged view of a portion B in Fig.
26 is a view showing a shaft position in a state where the filter is coupled to the head.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, it should be understood that the present invention is not limited to the embodiment shown in the drawings, and that other embodiments falling within the spirit and scope of the present invention may be easily devised by adding, .

1 is a front view of a refrigerator according to an embodiment of the present invention. 2 is a front view of the door of the refrigerator.

As shown in the drawing, the refrigerator 1 according to the embodiment of the present invention includes a cabinet 10 for forming a storage space and a door 20 for opening and closing a storage space of the cabinet 10, .

The cabinet 10 includes an outer case 11 made of a metal material forming an outer surface and an inner case 12 made of a resin material combined with the outer case 11 and forming a storage space in the refrigerator 1 Lt; / RTI > Insulation material is filled between the outer case 11 and the inner case 12 to insulate the space in the cavity.

The storage space is divided into upper and lower portions with respect to the barrier 13, and may be composed of an upper refrigerating chamber 14 and a lower freezing chamber 15. Further, the freezing chamber 15 may be further divided into right and left sides.

The door 20 may include a refrigerator compartment door 21 and a freezer compartment door 22 that independently open and close the refrigerating compartment 14 and the freezing compartment 15, respectively. The refrigerator compartment door 21 and the freezer compartment door 22 both have a structure capable of opening and closing the refrigerating compartment 14 and the freezing compartment 15 by the rotation of the refrigerator compartment door 21 and the freezing compartment door 22, Can be pivotally connected to the cabinet (10) by a hinge device (23). The refrigerator compartment door 21 may be formed of a French type door which can be configured so that a pair of refrigerators can be independently rotated on both left and right sides.

A dispenser (23) and an ice maker (24) may be provided on any one of doors of the pair of refrigerating compartment doors (21).

The dispenser 23 is provided on the front surface of the refrigerating chamber door 21 and can be configured to take water or ice by an operation from the outside by the user. An ice making chamber 25 is provided above the dispenser 23. The ice making chamber 25 is a heat insulating space in which ice is made and stored, and the ice maker 24 is accommodated therein and can be configured to be opened and closed by a separate door. Although not shown, the ice making chamber 25 communicates with the freezing chamber 15 by the cool air duct in a state where the refrigerator compartment door 21 is closed so that cool air required for the icemaking is supplied from the freezer compartment evaporator (not shown) Lt; / RTI >

Meanwhile, a plurality of shelves and drawers for storing food may be provided in the refrigerating chamber 14. [ In particular, a drawer assembly 161 including a drawer 161 provided on a bottom surface of the refrigerating chamber 14 and a table 162 for shielding an upper surface of the drawer 161 is provided.

The drawer assembly 16 may be configured so as to allow the interior of the drawer assembly 16 to be viewed through and the main water tank 34 provided at the rear side of the refrigerating chamber 14 may be shielded by the drawer 161. A side of the drawer assembly 16 may be provided with a water purifier 17 for purifying water to be supplied and supplying the purified water to the dispenser 23 and the ice maker 24. The water purification apparatus 17 may be disposed between the storage space of the drawer 161 and the wall surface and may be shielded by the front surface of the drawer 161. Therefore, the drawer 161 is not exposed to the outside when the drawer 161 is closed, and is opened when the drawer 161 is drawn out, so that it is possible to access the water purifier 17. [ Of course, the installation position of the water purification apparatus 17 is not limited to one side of the drawer 161 but may be provided in the area of the refrigerating chamber 14 including the refrigerating chamber 14 or the refrigerating chamber door 21 .

Above the drawer assembly 16, a plurality of shelves having a cantilever structure may be removably provided in a height adjustable fashion. A main duct 18 is provided on a rear surface of the refrigerating chamber 14 and a cool air generated in an evaporator (not shown) is supplied to the inside of the refrigerating chamber 14 through a plurality of discharge openings formed in the main duct 18. [ As shown in FIG.

3 is a view schematically showing an arrangement structure of water supply channels of the refrigerator.

As shown in the figure, the refrigerator 1 takes out the water supplied from an external water source to the dispenser 23 after purifying or cooling the water, or supplies purified water to the dispenser 23 or the ice maker 24 The water supply flow path 30 can be formed.

The water supply passage 30 is directly connected to a water supply source 2 such as a high outside water and flows into a high space through a tube guide 19 mounted inside the cabinet 10, ) Inlet.

The water supply passage 30 may include a water supply valve 31 and a flow rate sensor 32. The flow rate sensor 32 may be integrally formed with the water supply valve 31 as needed.

The water supply channel 30 connects the water purification unit 17 and the first branch pipe 33. The water supply channels branched from the first branch pipe are connected to the main water tank 34 and the first branch valve 35 As shown in FIG.

The water supply passage 30 connected to the outlet of the first branch valve 35 extends along the rear wall surface inside the cabinet 10 or the outside wall of the cabinet 10 through the tube guide 19 and then along the upper surface The door hinge 26, and the door 21, respectively.

The water supply channel of the refrigerating chamber door 21 is branched by the second branch pipe 36 and connected to the inlet of the sub water tank 37 and the second branch valve 38. The sub water tank 37 is connected to the dispenser 23 so that the cooled water can be taken out through the dispenser 23.

The outlet of the second branch valve 38 is connected to the dispenser 23 and the ice maker 24 by the water supply channel 30 to supply purified water to the dispenser 23 and the ice maker 24, .

Water purified through the water purification apparatus 17 may be supplied to the dispenser 23 or the ice maker 24 in a state where the water is cooled and supplied to the dispenser 23 or purified without being cooled.

The water purification apparatus 17 may include a plurality of filters 40 for purifying water as a whole and a head unit 50 connected to the flow path through which the filter 40 is connected and the water flows . Further, it may further include a case 171 in which the filter 40 and the head unit 50 are accommodated.

4 is a perspective view showing the structure of the water purification apparatus.

As shown in the figure, the water purification apparatus 17 may be configured to include a plurality of filters 40 and a head unit 50. The filter 40 includes a first filter 401 connected to the inlet side of the head unit 50, a third filter 403 connected to the outlet side of the head unit 50, 401) and the third filter (403) to purify the water passing through the water purification apparatus (17). The first filter 401, the second filter 402, and the third filter 403 may be composed of a pre-carbon filter, a membrane filter, and a post-carbon filter, respectively. Of course, the number and types of the filters 40 are not limited, but different types of functional filters may be applied for the number and the effective constants that can be stored in the water purification apparatus 17.

The head unit 50 includes a plurality of heads 60 to which the respective filters 40 are coupled, a mounting member 70 to which the head 60 is rotatably seated, A water inlet pipe 301 connected at both ends to receive raw water, and a water outlet pipe 302 through which purified water is discharged.

The mounting member 70 is configured to be independently rotatable in a state in which the plurality of heads 60 are mounted. The plurality of heads 60 may be configured such that the flow path is connected by the connection pipe 71. The raw water obtained through the inlet pipe 301 is purified after passing through each filter, Can be taken out.

The connection pipe 71 may be mounted on the mounting member 70 and may be provided between the head 60 and the head 60 to allow water to flow to the adjacent head 60 . A cover 72 is attached to one side of the mounting member 70 corresponding to the connection pipe 71 so that the connection pipe 71 can be shielded.

The head 60 includes a head body 61 in which an upper end of the filter 40 is inserted and fixed and a head body 61 provided inside the head body 61 to be connected to the upper end of the filter 40, And a head cap 62 for shielding the upper surface of the head body 61 into which the shaft 90 is inserted.

The filter 40 may be fixedly mounted on the head 60 in a rotating manner and the shaft 90 may be connected to the filter 40 to form a flow path during the mounting of the filter 40, And has a structure capable of switching the flow path by being rotated together with the rotation of the filter 40.

That is, when the filter 40 is mounted by the shaft 90, the flow path is switched to the filter 40 side so that the water can be purified through the filter 40. When the filter 40 is separated, the supplied water can be bypassed without passing through the filter 40, and the flow path can be switched to pass through the head 60. The conversion and detailed structure of the flow path will be described in more detail in the following other embodiments.

The case 171 may have various structures capable of accommodating the filter 40 and the head unit 50. The case 171 may have a structure such that at least a part of the filter 40 and the head unit 50 are accommodated in addition to the structure that completely accommodates the filter 40 and the head unit 50. [

The case 171 may have a variety of other structures that can be fixedly mounted at one side of the inside of the refrigerating chamber 14. Of course, the case 171 may not be provided if necessary, and the mounting member 70 may be directly mounted on the inner side of the refrigerating chamber 14.

The filter 40 may be provided only one filter according to the function of the water purification apparatus 17. If the filter 40 is composed of a single filter unit 40, Member 70 as shown in FIG. The structure of the head 60 may have the same structure irrespective of the number of the heads or the plurality of the heads 60. Hereinafter, a description will be given of a water purification apparatus in which the filter 40 and the head 60 are constituted by a single number.

5 is a perspective view showing a structure of a water purification apparatus according to another embodiment of the present invention. 6 is an exploded perspective view in which the filter and the head of the water purification apparatus are separated.

As shown in the figure, a water purification apparatus 17 according to another embodiment of the present invention includes a filter 40, a head 60, and a mounting member 70.

The filter 40 is formed in a cylindrical shape, and the outer shape of the filter 40 can be formed by the housing 41. The housing 41 includes a housing body 42 which houses therein a filtering member 44 in FIG. 7, and a housing 41 which is coupled to an opened top of the housing body 42 and forms an upper portion of the housing 41. And may include a cap 43.

The housing body 42 is formed in a cylindrical shape so that a first receiving space for receiving the filtering member 44 is formed. The housing body 42 may have an upper opening.

The housing cap 43 may be coupled to the upper opening of the housing body 42.

The housing cap 43 may form a second receiving space for receiving a part of the filtering member 44. For this, a part of the housing cap 42 may be formed in a cylindrical shape. The lower end of the housing cap 43 communicates with the second accommodating space, and the lower portion of the housing cap 43 forms a hollow portion 435.

The housing cap 43 may be inserted into the open bottom surface of the head 60. A pair of O-rings 432 may be provided at the upper end of the housing cap 43. The O-rings 432 may be in contact with the inner surface of the head 60 to prevent leakage.

Further, a coupling protrusion 433 may be further formed on the upper portion of the housing cap 43. The engaging projection 433 forms a lower horizontal surface 433c on the lower side. The engaging projection 433 is formed to be inserted along the engaging groove 631 formed on the inner surface of the head 60 when the upper portion of the filter 40 is inserted into the head 60. The housing cap 43 further includes an upward protruding portion 436 formed to face the lower horizontal surface 433c of the engaging projection 433. Therefore, when the engaging projection 433 is obscured by the head 60, the user can predict the position of the engaging projection 433.

At this time, the coupling protrusion 433 and the coupling groove 631 may extend in a direction intersecting with a direction in which the filter 40 is inserted. Accordingly, the filter 40 may be rotated while being inserted into the inside of the head 60, and the coupling protrusion 433 and the coupling groove 631 may be coupled to each other. In addition, when the filter 40 and the head 60 are completely coupled to each other, water supplied through the internal flow path may be introduced into the filter 40.

The mounting member 70 includes a base 73 mounted on one side wall of the case 171 or the inside of the refrigerator 1 and a base 73 protruding from both sides of the base 73 to rotate both sides of the head 60 And a rotation support portion 74 for supporting the rotation support portion 74. The water supply pipe 301 and the water discharge pipe 302 are connected to the rotation supporting portion 74 and the end of the water supply pipe 301 and the water discharge pipe 302 are disposed in the rotation support portion 74, To the water inlet 611 and the water outlet 612 of the washing machine.

The head 60 can be rotatably mounted on the mounting member 70 by the rotation support portion 74. [ Therefore, when the filter 40 is detached, the head 60 can be rotated or tilted to secure a space for attaching / detaching the filter 40, thereby facilitating the operation of attaching / detaching the filter 40.

The head 60 may be formed in a cylindrical shape having a lower surface and may include a head body 61 into which the filter 40 is inserted and fixed, a shaft 90 received in the head body 61, And a head cap 62 for shielding the opened upper surface of the head body 61. [

An insertion display portion 613 for indicating the insertion position of the coupling protrusion 433 may be formed on the outer surface of the head body 61. The insertion display portion 613 can be formed by printing, molding or machining. The user can recognize the position of the coupling groove 631 by the insertion display portion 613, Alignment can be facilitated.

A rotation indicator 614 may be formed on the outer surface of the head body 61 to indicate the rotation direction of the filter 40. The rotation display part 614 may be formed by printing, molding or machining and the user rotates the filter 40 in the correct direction by the rotation display part 614, And can be moved along the inside of the coupling groove 631 to be coupled.

Further, an opening 632 for confirming the engagement and restraint state of the engaging projection 433 may be further formed. The opening 632 may be formed at a position corresponding to the position of the coupling groove 631 or may be formed at a position in contact with at least a part of the coupling groove 631.

7 is an exploded view showing the structure of the filter. 8 is a longitudinal sectional view of Fig. 7. Fig. 9 is a cross-sectional view taken along the line 9-9 'of Fig. 10 is a cross-sectional view taken along line 10-10 'of FIG.

The filter 40 includes a filter housing 41 forming an outer shape and a filtering member 41 disposed inside the filter housing 41. The filter housing 41 includes a filter housing 41, 44 and an upper supporter 80 and a lower supporter 45 for supporting the filtering member 44.

The filter housing 41 is formed in a cylindrical shape, and the housing body 42 and the housing cap 43 may be coupled to each other. A filter insertion portion 431 is formed at the upper end of the housing cap 43 and a pair of O-rings 432 are vertically arranged at the filter insertion portion 431.

The coupling protrusion 433 may be formed on the outer side of the filter insertion portion 431 under the O-ring 432. The pair of coupling protrusions 433 may be formed at positions facing each other and may be inserted into the coupling groove 631.

The engaging protrusion 433 may be provided with a protrusion guide portion 433a. The protrusion guide portion 433a may be formed to have an inclination or a predetermined curvature on the upper surface of the coupling protrusion 433. The coupling protrusion 433 contacts the groove guide portion 633 for guiding the coupling protrusion 433 to the entrance of the coupling groove 631 to guide the rotation of the coupling protrusion 433 in one direction.

A restricting projection 433b protruding downward may be further formed on one side of the lower surface of the engaging projection 433. The restricting projection 433b may be engaged with the engaging groove 631. [ Therefore, the filter can be fixedly mounted on the inner side of the head 60 in a state in which the engaging projection 433 is completely inserted into the engaging groove 631.

Meanwhile, a housing coupling part 434 for coupling with the upper supporter 80 may be formed on the inner side surface of the filter insertion part 431 so that the inside of the filter insertion part 431 is hollow . That is, the upper supporter 80 can be accommodated in the second accommodation space formed by the housing cap 43 and the hollow portion 435. The upper supporter 80 may be coupled to the upper surface of the filtering member 44 and the hollow portion 435 of the housing cap 43, respectively.

The upper surface 434a of the housing fastening part 434 may be inclined, and the housing fastening parts 434 may be formed at positions facing each other and obliquely facing each other.

A supporter coupling part 81 may be formed on the upper supporter 80 corresponding to the housing coupling part 434. A hook portion 811 is formed at one end of the supporter fastening portion 81. Therefore, when the upper end of the upper supporter 80 is rotated in one direction with the filter inserting portion 431 inserted into the filter inserting portion 431, the hook portion 811 of the supporter fastening portion 81 is inserted into the housing fastening portion 434 on the upper surface. When the upper supporter 80 is completely rotated, the hook portion 811 of the supporter fastening portion 81 is fastened to the end of the housing fastening portion 434 so that the upper supporter 80 is fastened to the housing May be coupled to the cap (43).

The supporter fastening part 81 and the housing fastening part 434 can be formed in various structures and the fastening part 81 and the housing fastening part 434 can be coupled to the filter housing 41 and the housing fastening part 434, The upper supporter 80 inside the filter housing 41 can be integrated. Therefore, when the filter 40 is rotated when the filter 40 is mounted, the upper supporter 80 may be rotated together.

Meanwhile, a filtering member 44 may be provided in the filter housing 41. The filtering member 44 can be purified by passing the inflowing water, and can be variously configured according to functions. For example, the filtering member 44 may be composed of a commonly used carbon filter or a membrane filter, and various filters may be used depending on the required purifying performance.

The filtering member 44 may be formed in a cylindrical shape having a hollow 441 formed at the center thereof in the vertical direction and an upper supporter 80 and a lower supporter 45 are coupled to the upper and lower ends of the filtering member 44 So that the filtering member 44 can be fixedly mounted inside the filter housing 41.

The outer diameter of the filtering member 44 is smaller than the inner diameter of the filter housing 41 and a space through which water flows between the filter housing 41 and the filtering member 44 may be formed .

The upper supporter 80 is provided at an upper end of the filtering member 44 and may extend upward to form a passage connecting the inlet of the filter insertion portion 431 and the hollow 441. Therefore, water supplied from the head 60 can be introduced through the filter inserting portion 431, and purified water from the filter 40 can be discharged to the head 60.

The upper supporter 80 includes a supporter accommodating portion 82 for accommodating the upper end of the filtering member 44 and a hollow portion 441 extending downward from the central portion of the supporter accommodating portion 82, A supporter stepped portion 84 protruding upward stepwise from the upper surface of the supporter inserting portion 83 and a supporter stepped portion 84 protruded upward from the upper surface of the supporter inserting portion 83, And a supporter extension part 85 extending to be inserted into the inside of the first and second support parts 431 and 431.

11 is a partially cutaway perspective view of the upper supporter of the filter.

8 to 11, when the upper supporter 80 and the filtering member 44 are coupled, the supporter receiving portion 82 is connected to the filtering member 44 As shown in FIG. The supporter insertion portion 83 may be inserted into the hollow 441 and be in contact with the inner surface of the filtering member 44.

The supporter insertion portion 83 is formed to communicate with the filter output path 861 formed in the supporter extension portion 85, The purified water in the hollow 441 of the filtering member 44 is circulated through the supporter insertion portion 83 and the filter output passage 861 and the filter outlet 862 at the end of the filter output passage 861 And may be discharged through the opening of the filter inserting portion 431.

The supporter stepped portion 84 protrudes from the upper surface of the supporter accommodating portion 82 and may have a smaller diameter than the supporter accommodating portion 82. The periphery of the supporter step portion 84 may be spaced apart from the inner surface of the housing cap 43 when the housing cap 43 and the upper supporter 80 are coupled.

A supporter extension portion 85 extending upward can be formed at the center of the supporter stepped portion 84. The supporter extension part 85 is located inside the filter insertion part 431 when the housing cap 43 and the upper supporter 80 are coupled. A filter input path 871 and a filter output path 861 may be formed in the supporter extension part 85. Thus, the water supply into the filter 40 and the purified water discharge from the filter 40 can be made through the supporter extension 85. [

In detail, a first filter input channel 872 extending downward is formed on the opened upper surface of the supporter extension part 85. The supporter stepped portion 84 may be formed with a second filter input passage 873 passing through the supporter stepped portion 84. The second filter input channel 873 may have an opening formed on a circumferential surface of the supporter stepped portion 84 and extend toward the center of the supporter extending portion 85. The first filter input channel 872 and the second filter input channel 873 may be connected to each other at a lower end of the supporter extension portion 85, that is, inside the supporter stepped portion 84.

The water introduced through the filter insertion portion 431 flows through the first filter input passage 872 of the supporter extension portion 85 and then flows to the both sides of the first filter input passage 872 from the lower end thereof May be moved outward along the branched second filter input channel 873 and may be discharged through the opening around the stepped portion.

The water discharged through the filter input passage 871 flows along the space between the filter housing 41 and the filtering member 44. The water introduced into the filtering member 44 through the filtering member 44 can be purified in the process of flowing into the hollow 441.

The supporter extension portion 85 includes a first extension portion 86 extending from the supporter step portion 84 and a second extension portion 87 extending upward from the first extension portion 86 . The first extension portion 86 may be formed to have an outer diameter larger than the outer diameter of the second extension portion 87 and the filter outlet 862 may be formed on the upper surface of the first extension portion 86 .

A guide surface 874, which is recessed inward, is formed outside the second extending portion 87 above the filter outlet 862. The guide surface 874 may be formed obliquely and spaced upward from the filter outlet 862. Therefore, when the purified water discharged to the filter outlet 862 flows upward, it can be guided outwardly by the guide surface 874 to flow more effectively.

A portion of the second extending portion 87 may extend toward the inside of the first extending portion 86 at the lower end of the guide surface 874. [ The filter output passage 861 may be defined in a space between an inner surface of the first extension portion 86 and an outer surface of the second extension portion 87. The first filter input channel 872 may extend from the opened upper end of the second extended portion 87 to the lower end thereof.

The outer diameter of the first extension portion 86 is slightly smaller than the inner diameter of the filter insertion portion 431 so that purified water discharged through the filter outlet 862 flows into the first extension portion 86 And the filter inserting portion 431, as shown in FIG.

An upper portion of the filter outlet 862 is formed with an exit groove 875 formed along the periphery of the second extending portion 87 as the guide surface 874 is formed. The water discharged from the filter outlet 862 disposed on both sides can flow along the outlet groove 875 and is connected to one of the outlet guide portions 912 and is discharged along the outlet guide portion 912 .

The outer diameter of the second extension portion 87 may be formed to correspond to the inner diameter of the shaft 90 located inside the filter insertion portion 431. Therefore, the water supplied through the inside of the shaft 90 can be introduced into the second extended portion 87.

A first extended portion O-ring 863 may be provided on the outer side of the first extension portion 86 and a second extended O-ring 876 may be formed on the outer side of the second extended portion 87.

In this case, the first extending portion 86 is formed with a first receiving groove 864 formed to be inwardly concave along the circumferential direction, and the second extending portion 87 is formed with a second receiving groove 877 may be formed along the circumferential direction. At least a portion of the first extending portion O-ring 863 may be received in the first receiving groove 864 and at least a portion of the second extending portion O-ring 876 may be received in the second receiving groove 877.

The inside of the filter insertion portion 431 and the first extension portion 86 can be hermetically sealed by the first extension O-ring 863. The second extended portion O-ring 876 is brought into close contact with the inner surface of the shaft 90 so that the gap between the second extended portion 87 and the shaft 90 can be hermetically sealed.

Therefore, the water flowing into the supporter extension 85 and the purified water flowing out of the supporter extension 85 may flow through independent channels without leaking or mixing with each other.

Meanwhile, a first connection part 851 may be formed on the upper end of the supporter extension part 85. The first connection part 851 is recessed toward the inside from the upper end of the supporter extension part 85 and may be formed to be symmetrical to both the left and right sides. The first connection portion 851 is formed in a corresponding shape so that the second connection portion 972 of the shaft 90 described below can be inserted and formed. Accordingly, the first connection part 851 and the second connection part 972 can be rotated together with the first connection part 851 and the second connection part 972 being coupled to each other.

The first connection part 851 may be formed to be symmetrical with respect to a protrusion 852 protruding from a position opposite to the inner surface of the supporter extension part 85,
The protrusion 852 may protrude symmetrically at a position facing the inner surface of the first connection part 851. [ The protrusion 852 may protrude from the first connection part 851 to the first connection part 851.
The first inclined surfaces 853 may be formed on both sides of the first connection portion 851, that is, both side surfaces of the protrusion 852. The first inclined surface 853 may be formed in a shape such that the width of the first connection portion 851 is increased and the width of the protrusion 852 is narrowed from the lower side to the upper side. That is, the first connection portion 851 may be formed so that the width thereof becomes gradually narrower toward the depth direction to be recessed.

In addition, the first inclined surface 853 may be inclined in a direction intersecting the vertical direction of the first inclined surface 853. Therefore, the protrusion 852 may be formed so as to be wider from the inner side of the supporter extension 85 toward the center of the inner diameter of the supporter extension 85.

Due to such a structure, it is possible to induce the coupling of the first connection portion 851 and the second connection portion 972. When the torsional moment is applied in a state where the first connection part 851 and the second connection part 972 are in contact with each other, the first connection part 851 and the second connection part 972 are slid, Can be easily separated.

12 is a side view of the head. 13 is an exploded perspective view of the coupling structure of the head seen from one side. 14 is an exploded perspective view of the coupling structure of the head as viewed from the other side.

Referring to the drawings, the structure of the filter will be described in detail. The head 60 is inserted into the shaft 90 through the opened upper surface of the head body 61, And is configured to shield the open top surface of the head body 61.

The head body 61 may include a lower body 63 and an upper body 64. The lower body 63 is a portion where the filter insertion portion 431 is inserted and coupled, and is opened when the filter 40 can be received. In addition, the lower body 63 may have the coupling groove 631 formed therein so that the coupling protrusion 433 can be inserted.

An opening 632 for forming the coupling groove 631 may be formed in the lower body 63 and an insertion state of the coupling projection 433 may be confirmed through the opening 632. [ In order to prevent the filter 40 from sagging in a state where the filter insertion portion 431 is inserted into the inner surface of the lower body 63, The supporting ribs 634 may be formed.

The upper body 64 may be formed at an upper end of the lower body 63 and may have an inner diameter smaller than that of the lower body 63. The shaft 90 is inserted into the upper side of the upper body 64 and the shaft 90 is inserted through the upper side of the upper side of the upper body 64, .

The upper end of the filter insertion portion 431, the upper end of the supporter extension portion 85, and the lower end of the shaft 90 may be disposed on the inner side of the upper body 64, Thereby providing a flow path through which purified water can flow through the filter 40.

On both sides of the upper body 64, a water inlet portion 611 and a water outlet portion 612 are protruded outward. The water inlet part 611 and the water outlet part 612 may be connected to the water inlet pipe 301 and the water outlet pipe 302, respectively. The inlet portion 611 and the outlet portion 612 may be formed so as to be selectively in communication with the flow path formed in the shaft 90.

The head cap 62 shields the upper surface of the upper body 64 and presses the upper surface of the shaft 90 to maintain the state that the shaft 90 is fixedly mounted on the inner side of the upper body 64 . To this end, a cap support portion 621 extending to the upper surface of the shaft 90 may be further formed on a lower surface of the head cap 62.

The shaft 90 selectively rotates the water flow path inside the head 60 and can be rotatably mounted on the upper body 64. A filtering passage 96 and a bypass passage 95 are formed in the shaft 90. The shaft 90 rotates the passage 90 selectively to the inlet 611 and the outlet 612, .

In detail, the shaft 90 may include an upper part 91 and a lower part 92. [ The upper part 91 may have a larger diameter than the lower part 92 and may have an outer diameter corresponding to the inner diameter of the upper body 64.

A shaft O-ring 93 is provided at an upper end and a lower end of the upper part 91, respectively. The shaft O-ring 93 hermetically seals between the shaft 90 and the inner surface of the upper body 64 to prevent leakage of water flowing through the head 60.

A shaft inlet 961 and a shaft outlet 962 are formed around the upper part 91 between the shaft O-rings 93, respectively. The shaft inlet 961 and the shaft outlet 962 may be formed at positions facing each other and at positions corresponding to the inlet portion 611 and the outlet portion 612. Accordingly, the water having passed through the water inlet is introduced into the shaft inlet 961, and the water having passed through the shaft outlet 962 can be discharged through the water outlet 612.

The shaft inlet 961 and the shaft outlet 962 are formed in a rectangular shape and a sealing member mounting portion 911 for mounting the sealing member 94 around the shaft inlet 961 and the shaft outlet 962, . The sealing member mounting portion 911 and the sealing member 94 may be formed in a rectangular shape corresponding to the shaft inlet 961 and the shaft outlet 962.

The sealing member 94 may include a press-fitting portion 941 press-fitted into the sealing member mounting portion 911 and a sealing portion 942 protruding along the circumference of the press-fitting portion 941 . The sealing portion 942 comes into contact with the inner surface of the upper body 64 when the shaft 90 is mounted. When the shaft inlet 961 and the shaft outlet 962 are connected to the water inlet 611 and the water outlet 612 by the rotation of the shaft 90, So as not to leak through the head (60). Particularly, the shape of the sealing member 94 is formed to be long in a direction in which the shaft 90 is rotated, so that the sealing member 94 can be minimized from being dropped or interfered with during rotation of the shaft 90.

A sealing rib 613 may be formed in the inlet 611a and the outlet 612a formed in the inlet 611 and the outlet 612, respectively. The sealing ribs 613 prevent the sealing member 94 from being separated or the sealing member 94 from being damaged and the sealing ribs 613 may be formed on the inner surface of the upper body 64 of the water inlet 611 and the water outlet 612, And may be formed to cross the inlet port 611a and the outlet port 162a. The sealing ribs 613 may extend laterally and laterally. If necessary, the sealing ribs 613 may be arranged in a direction in which a plurality of the sealing ribs 613 intersect with each other.

Therefore, when the shaft 90 rotates, the sealing member 94, which is passed through the inlet 611a and the outlet 612a formed in the inlet 611 and the outlet 612, 611a and the outlet port 612a to prevent the sealing member 94 from being separated from the sealing member mounting portion 911. [ That is, the sealing ribs 613 press the outer surface of the sealing member 94 during the rotation of the shaft 90, so that the sealing member 94 contacts the inlet portion 611, It is possible to prevent the phenomenon of being caught by the opening of the opening 612.

A bypass inlet 951 and a bypass outlet 952 may be formed between the shaft inlet 961 and the shaft outlet 962 in the outer surface of the upper body 64, respectively. The bypass inlet 951 and the bypass outlet 952 may also be formed to face each other and penetrate each other. When the bypass inlet 951 and the bypass outlet 952 are aligned with the inlet portion 611 and the outlet portion 612 by the rotation of the shaft 90, The water supplied through the bypass passage 95 can be discharged to the water outlet 612 directly.

The bypass inlet 951 and the bypass outlet 952 may be formed at the same height as the shaft inlet 961 and the shaft outlet 962 and rotated at an angle of 90 ° with respect to the shaft inlet 961 and the shaft outlet 962, respectively. Therefore, in order to connect the filtering passage 96 or the bypass passage 95 to the inlet portion 611 and the outlet portion 612, the shaft 90 must be rotated by an angle of 90 °.

The upper end of the filtering channel (96) may protrude from the bypass channel (95) inside the upper body (64). Accordingly, it is possible to simultaneously implement the filtering passage 96 and the bypass passage 95 in a state where the height of the shaft 90 is minimized. Through this, the head 60 and the water purification device 17 So that it can be configured more compactly.

A rotation protrusion 921 may be provided on the lower surface of the upper body 64. The rotation protrusions may be formed in pairs, and one may be formed at a position corresponding to the shaft inlet 961 and the shaft outlet 962, respectively. That is, the pair of rotation protrusions 921 may be formed at positions rotated by 90 degrees from each other.

Meanwhile, a lower body 63 extending downward is formed at the center of the upper body 64. The lower body 63 may be formed to be smaller than the inner diameter of the seating portion 65 and extend downward through the seating portion 65. The lower body 63 may be extended to a length in which the upper shaft 90 is inserted and joined to each other when the filter 40 is coupled to the head 60.

An outflow guide portion 912 may be formed on one side of the lower body 63. The outflow guide portion 912 may extend vertically below the shaft outlet 962. The outflow guide portion 912 may be formed by cutting a part of the outer side surface of the cylindrical lower body 63 into a plane shape.

Therefore, when the shaft 90 is mounted on the head 60, the outflow guide portion 912 of the shaft 90 is separated from the inner side surface of the head 60, 965 are formed. Since the lower end of the outflow guide portion 912 is formed above the filter outlet 862, the water discharged from the filter outlet 862 is moved upward along the outflow guide portion 912, And then combined with the water outlet pipe 302 through the outlet 962 and the water outlet 612 in order.

15 is an exploded exploded perspective view of the internal structure of the head seen from one side. 16 is an exploded exploded perspective view of the internal structure of the head viewed from the other side.

15 is a longitudinal sectional view of the bypass passage 95 in a state where the bypass passage 95 is connected to the inlet 611 and the outlet 612. As shown in FIG. As shown in the figure, the upper body 64 is formed with a bypass flow path 95 passing through the center of the upper body 64, and on both sides of the upper body 64, (951) and a bypass outlet (952) are opened.

The bypass inlet 951 and the bypass outlet 952 may be formed larger than the sizes of the inlet 611a and the outlet 612a and may be formed between a pair of upper and lower shaft o- . The water passing through the bypass passage 95 in the state where the bypass passage 95 is aligned with the inlet portion 611 and the outlet portion 612 does not leak to the outside, Across.

That is, the water flowing into the head 60 passes through the head 60 without passing through the filter 40. Even if the filter 40 is separated, water is not continuously generated, 30). ≪ / RTI >

On the inner surface of the bypass channel 95, a channel protrusion 963 protruding for forming the filtering channel 96 is formed. The channel protrusion 963 may be formed at the center of the shaft 90 and may protrude from the bottom of the bypass channel 95 but may not be shielded from the bypass channel 95.

Both ends of the channel protrusion 963 are formed to be inclined or rounded so that a decrease in the flow velocity caused by the channel protrusion 963 when water flows through the bypass channel 95 can be minimized.

16 is a longitudinal sectional view in a state in which the filtering channel is switched to be connected to the water inlet and the water outlet.

As shown in the drawing, the filtering passage 96 may be arranged to be connected to the water inlet 611 and the water outlet 612 according to the rotation of the shaft 90.

The shaft inlet 961 and the shaft outlet 962 are in contact with the inlet port 611a and the outlet port 612a and are connected to the shaft inlet 961 and the shaft outlet 962 by the sealing member 94, And the outside of the inlet 611a and the outlet 612a. An inner pipe 97 is formed on the inner side of the lower body 63 and the inner pipe 97 can be connected to the supporter extension part 85.

The water received through the shaft 90 may be supplied to the filter 40 through the upper supporter 80 and may be supplied to the shaft 90 through the upper supporter 80. [ . That is, water flowing into the head 60 can be purified through the filter 40 and then discharged through the head 60.

The filtering passage 96 may include a shaft receiving passage 964 and a shaft receiving passage 965. The filtering passage 96 may include a shaft receiving passage 964 and a shaft receiving passage 965. [

The shaft intake passage 964 includes a horizontal portion 964a extending from the shaft inlet 961 to the center of the shaft 90 and a vertical portion 964b extending downward from the end of the horizontal portion 964a. ≪ / RTI > The vertical portion 964b may be formed by the inner pipe 97.

The inner pipe 97 is spaced apart from the inner surface of the lower body 63 to form a spacing space 971. The distance of the spacing space 971 may correspond to the thickness of the supporter extension 85. Therefore, when the filter 40 is mounted, the upper end of the supporter extension 85 may be inserted into the spacing space 971.

The inner pipe 97 and the supporter extension 85 may be connected to each other at an inner surface of the lower body 63, which is shorter than the length of the outer surface of the lower body 63. To this end, a second connection portion 972 may be formed at the lower end of the inner pipe 97.

The second connection portion 972 may have a shape corresponding to the first connection portion 851. The second connection portion 972 is inserted into the first connection portion 851 so that the shaft 90 and the upper supporter 80 can be rotated together.

The shaft inlet oil passage 964 can be communicated with the filter input oil passage 871 by the coupling of the inner pipe 97 and the supporter extension portion 85 and the water for purification can be supplied to the filtering member 44, As shown in FIG.

The shaft outflow passage 965 may include an outflow guide portion 912 formed on an outer surface of the lower body 63 and an outflow connection portion 965a formed on the upper body 64.

The upper end of the outflow guide portion 912 penetrates the lower surface of the upper body 64 and communicates with the outflow connection portion 965a. The outflow connection portion 965a connects the outflow guide portion 912 and the shaft outlet 962 from the inside of the upper body 64. [

Accordingly, the purified water discharged from the filter outlet 862 can be moved upward along the outflow guide portion 912 and discharged to the shaft outlet 962 through the outflow connection portion 965a. The purified water discharged to the shaft outlet (962) may be discharged through the water outlet (612).

16, when the filtering channel 96 is connected to the water inlet 611 and the water outlet 612, the water flowing into the head 60 through the water inlet pipe 301 flows into the filter 40 and flowed from the filter 40 to the head 60 and then discharged to the water outlet pipe 302.

The body seating part 65 may be formed on the inner circumferential surface of the upper body 64. When the shaft 90 is mounted, the lower surface of the upper body 64 is seated on the body seating portion 65 to maintain the mounting position.

17 is a perspective view of the head viewed from below. 18 is a partially cut-away perspective view of the head.

15 to 18, a rotation guide 651 is formed on the body seating part 65 by cutting. At this time, the rotation protrusion 921 is positioned inside the rotation guide 651. The rotation guide 651 may be incised at an angle of 180 ° with respect to the center of the head body 61.

The rotation protrusions 921 are formed at both ends of the rotation guide 651 when the shaft 90 is rotated by an angle of 90 ° because the pair of the rotation protrusions 921 are disposed at an angle of 90 °. It can be stopped by the stopper 652.

The inlet portion 611 and the outlet portion 612 can be selectively connected to the filtering passage 96 or the bypass passage 95 at a position stopped by the stopper 652. Accordingly, when the user rotates the filter 40 to a point where the user does not rotate in one direction without rotating while measuring an accurate angle, the flow path can be selected and accurately connected.

A channel cut-out portion 653 may be formed on one side of the seating portion 65. The channel cutout portion 653 may be formed in the seating portion 65 facing the rotation guide 651 and may be formed vertically below the outlet 612a.

Therefore, the flow path cutout portion 653 is formed in a state in which the shaft 90 is rotated so that the filtering flow path 96 is connected to the water inlet portion 611 and the water outlet portion 612, Position of the < / RTI > The channel cutout portion 653 may be formed to have the same width as the outflow guide portion 912. Accordingly, the outflow guide portion 912 and the flow path cutout portion 653 can contact each other to form a passage through which the purified water can flow upward.

On the inner surface of the lower body 63, a pair of the coupling grooves 631 and a plurality of the supporting ribs 634 may be formed. When the filter 40 is mounted on the head 60 and then rotated so that the filtering channel 96 is connected to the water inlet 611 and the water outlet 612, (Not shown).

The coupling groove 631 may be exposed to the outside by the opening 632 and the coupling state of the coupling protrusion 433b and the coupling groove 631a through the opening 632 can be checked. The position of the restricting groove 631a may be formed at a position where the restricting projection 433b and the restricting groove 631a can be engaged with each other while the engaging projection 433 is fully rotated. Therefore, when the filter 40 is inserted into the inside of the head 60 and completely rotated, the coupling protrusion 433 can be restrained inside the coupling groove 631, Separation can be prevented.

The coupling groove 631 may be formed by a first guide protrusion 635 protruding from the inner surface of the lower body 63. The upper surface of the first guide protrusion 635 631a may be formed. The first guide protrusion 635 may extend from the open end of the lower body 63 to the engaging groove 631 and protrude so that the engaging protrusion 433 can be seated.

The coupling protrusion 433 can not be inserted in a part of the opening of the lower surface of the head 60 due to the interference of the first guide protrusion 635 and thus prevents the filter 40 from being erroneously mounted .

One side of the first guide protrusion 635 may have a first groove guide 633 for guiding the engaging protrusion 433 at the entrance of the adjacent engaging groove 631. The first groove guide portion 633 may be formed to have a predetermined inclination so that the first groove guide portion 633 contacts the projection guide portion 433a of the coupling projection 433 when the coupling projection 433 is inserted, In one direction.

A second guide protrusion 636 may be formed on one side of the first groove guide 633, which is spaced apart from the end of the first groove guide 633 along the inner surface of the lower body 63. The second guide protrusion 636 is formed with a second groove guide portion 633 inclined so that the engaging protrusion 433 rotating through the first groove guide portion 633 is engaged with the second groove guide portion 633 to guide the movement to the entrance of the coupling groove 631. [ The second groove guide portion 633 may extend from the first groove guide portion 633 to the entrance of the coupling groove 631.

Accordingly, when the filter 40 is inserted into the lower surface of the lower body 63 after the coupling protrusion 433 is positioned at a position corresponding to the insertion display portion 613, The first groove guide portion 433a slides along the first groove guide portion 633 and then slides along the second groove guide portion 633 and is inserted into the coupling groove 631. [

Therefore, when the user inserts the coupling protrusion 433 of the filter 40 by aligning and inserting the filter 40 into the inside of the head 60, the first groove guide portion 633 So that the filter 40 can be engaged while being naturally rotated.

The shaft 90 and the upper supporter 80 are integrally coupled when the filter 40 is completely inserted and the coupling protrusion 433 is positioned at the entrance of the coupling groove 631. [ When the filter 40 is further rotated so that the coupling protrusion 433 can be completely inserted into the coupling groove 631, the shaft 90 is rotated together with the filtering channel 96 And is connected to the water inlet 611 and the water outlet 612.

To this end, a second connection portion 972 may be formed at the lower end of the shaft 90, that is, at the lower end of the inner pipe 97. The second connection portions 972 may be formed in pairs in the same shape at positions facing each other, and both sides of the lower end of the inner pipe 97 are formed by cutting.

That is, the lower end of the inner pipe 97 may include a pair of second connection portions 972 protruding downward and a pair of pipe cutouts 973 formed between the second connection portions 972. The pair of second connection portions 972 may be formed to have a narrower width downward.

A second inclined surface 974 may be formed on both sides of the pair of second connection portions 972 and the second inclined surface 974 may be formed to have a slope corresponding to the first inclined surface 853 do. The second inclined surface 974 is inserted along the first inclined surface 853 while the filter 40 is inserted into the head 60 in a rotational manner. When the filter 40 is completely inserted into the head 60, the second connection portion 972 is engaged with the first connection portion 851 and the protrusion 852 is connected to the pipe cutout portion 973 ). ≪ / RTI > Therefore, the first inclined surface 853 and the second inclined surface 974 can be in a completely close contact state.

Also, the second inclined surface 974 may be inclined in the thickness direction of the inner pipe 97 like the first inclined surface 853. Therefore, when the rotation of the shaft 90 is further restricted, the rotation direction of the filter 40 acts on the second inclined surface 974 and the first inclined surface 853, 40 can be easily separated.

A plurality of the supporting ribs 634 are formed on the inner surface of the lower body 63 and the outer surface of the filter insertion portion 431 can be supported by the supporting ribs 634.

Hereinafter, the operation of the water purification apparatus according to the embodiment of the present invention will be described.

19 is a cut-away perspective view of the filter and the head separated from each other. 20 is an enlarged view of part A of Fig. 21 is a view showing the position of the shaft in a state where the filter and the head are separated.

The bypass passage 95 is connected to the inlet portion 611 and the outlet portion 612 in a state where the filter 40 is not coupled to the head 60 as shown in the figure.

Therefore, the water flowing through the inlet portion 611 flows into the bypass inlet 951 through the inlet 611a, and flows along the bypass flow passage 95. Then, the water is discharged to the water outlet 612 through the bypass outlet 952 and the water outlet 612a. That is, the water flowing into the water inlet portion 611 is supplied to the ice maker 24 or the dispenser 23 through the water feed passage 30 without passing through the purification process.

Such a state may correspond to a state in which the filter 40 is detached for replacement of the filter 40, or a service related to cleaning or other maintenance of the pipeline. In addition, even if some of the filters 40 are not used, or if a constant is not needed, no problem will arise in the use of the refrigerator 1 even if such a state is maintained.

21, the first rotary protrusion 921a of the pair of rotary protrusions 921 is positioned on the rotation guide 651 (see FIG. 21) The stopper 652 is in contact with one side. In this state, the outflow guide portion 912 and the flow path cutout portion 653 are maintained to be shifted by an angle of about 90 degrees.

22 is a view showing a state in which the filter is inserted into the inside of the head. 23 is a view showing a state in which the filter is completely inserted into the inside of the head.

The filter insertion portion 431 is inserted into the opening of the lower surface of the head 60 to mount the filter 40, as shown in the figure. At this time, the insertion protrusion 433 can be aligned and inserted by referring to the insertion display portion 613 formed on the outside of the head 60.

The engaging protrusion 433 slides along the first groove guide 633a and the second groove guide 633b during the insertion of the filter 40 so that the filter 40 is smoothly inserted So that it can be rotated.

When the filter 40 is inserted to a predetermined depth, the second connection portion 972 is inserted into the first connection portion 851 as shown in FIG. The second connecting portion 972 and the first connecting portion 851 can slide while the second inclined surface 974 and the first inclined surface 853 are in contact with each other so that the second connecting portion 972 And can be guided to the inside of the first connection portion 851.

That is, when the filter 40 is inserted and inserted, the filter 40 is naturally rotated in the process of inserting the filter 40 into the head 60 by the first groove guide 633a and the second groove guide 633b, The shaft 90 and the supporter extension 85 can be completely formed by sliding the second inclined surface 974 and the first inclined surface 853 in the process of FIG.

The engaging protrusion 433 is located on the inner side or the inlet side of the engaging groove 631 when the shaft 90 and the supporter extension 85 are fully engaged with each other as shown in FIG. That is, the filter 40 corresponds to a state before the filter 40 is fully engaged with the head 60 in a simple inserted state. In this state, the shaft 90 is not rotated, and the bypass passage 95 is connected to the inlet portion 611 and the outlet portion 612.

23, the user can further rotate the filter 40 in the rotation advancing direction, and the user can rotate the filter 40 by about 90 degrees to completely insert the engaging projection 433 into the engaging groove 631 .

24 is a view showing a state in which the filter is rotated for engagement in a state in which the filter is completely inserted into the inside of the head. 25 is an enlarged view of part B in Fig. 26 is a view showing a shaft position in a state where the filter is coupled to the head.

When the filter 40 is further rotated at an angle of 90 ° in the state of FIG. 23 so that the coupling protrusion 433 and the coupling groove 631 are rotated to be completely engaged, the shaft 90 is rotated together 26 is in the same state.

In detail, when the second connection part is inserted into the first connection part and is fully engaged with each other, the filter can be rotated together with the filter.

The shaft 90 may be further rotated by an angle of approximately 90 ° until the second rotation projection 921b reaches the position of the stopper 652. [ When the shaft 90 is completely rotated, the filtering channel 96 is connected to the water inlet 611 and the water outlet 612. Of course, the inner pipe 97 and the supporter extension portion 85 remain connected to each other, so that raw water and purified water can flow in and out between the head 60 and the filter 40. The coupling protrusion 433 is completely inserted into the coupling groove 631 so that the filter 40 is rotated in a direction opposite to the coupling direction by the user, It remains in the engaged state until it is separated from the main body 60.

24, the water flowing through the water inlet portion 611 flows along the shaft shaft inlet flow passage 964 through the inlet port 611a and the shaft inlet port 961. [ That is, water flowing along the horizontal portion 964a and the vertical portion 964b flows into the inside of the supporter extension portion 85 through the inner pipe 97, and the first filter input channel 872 And then flows into the space between the inner surface of the housing 41 and the filtering member 44 by being branched by the second filter input passage 873. [

The water introduced into the hollow 441 inside the filtering member 44 from the outside of the filtering member 44 can be purified in the process of passing through the filtering member 44. The purified water inside the filtering member 44 flows upward along the inside of the first extending portion 86 and flows through the filter outlet 862 disposed on both sides of the upper end of the first extending portion 86, As shown in FIG.

At this time, the inside of the filter insertion portion 431 forms a space through which the purified water flows by the first extension portion 86, the outer side surface and the inserted lower body 63. 24, when the filtering channel 96 is connected to the water inlet 611 and the water outlet 612, the water outlet guide 912 and the channel cutout 653 are positioned at the same position Thereby allowing purified water to flow to the upper body 64 side.

The purified water flows upward along the water guide portion 912 formed in the lower body 63 and flows into the upper body 64 so that the shaft outlet 962 and the water outlet portion 612, and then discharged to the water outlet 612. The water outlet pipe 302 of the water outlet 612 forms a part of the water supply channel 30 to supply purified water to the dispenser 23 and the ice maker 24.

23, when the filter 40 is to be replaced for a period of replacement or for other maintenance purposes, the filter 40 is first rotated in the direction opposite to the engaging direction .

The coupling protrusion 433 is moved in the direction of leaving the coupling groove 631 in accordance with the rotation of the filter 40 and the supporter extension portion 85 rotates the shaft 90. 20, when the shaft 90 is rotated by 90 ° to close the filtering flow path 96 and the bypass flow path 95 is connected, the rotation protrusion 921 contacts the stator 652, Thereby restricting the rotation of the shaft 90.

In this state, when a force is applied to further rotate the filter 40, the shaft 90 can not be further rotated by the stopper 652, and therefore, the first inclined surface 853 and the second inclined surface A torsional moment is applied to the first inclined surface 974 so that the second inclined surface 974 is smoothly separated along the first inclined surface 853 to be slid. The coupling protrusion 433 that has passed through the coupling groove 631 passes through the second groove guide portion 633 and the first groove guide portion 633 in order to allow the filter 40 to move from the head 60 To be separated.

In the meantime, in the embodiment of the present invention, the water purification apparatus 17 is mounted on the refrigerator 1 in order to facilitate the understanding and understanding of the description. However, the water purification apparatus 17 is generally used The present invention can be applied to any device capable of purifying water by a filter exchange method.

Claims (9)

A housing body 42 having a housing space formed therein;
A hollow portion 435 which is coupled to the upper side of the housing body 42 and has open upper and lower sides and a guide portion 433a which is inclined or has a predetermined curvature on the upper surface and a lower horizontal surface 433c A housing cap 43 having an engaging projection 433 formed thereon and an upward protruding portion 436 formed to face the lower horizontal surface 433c of the engaging projection 433;
A filtering member 44 accommodated in the housing space of the housing body 42;
An upper supporter 80 housed in the hollow portion 435 of the housing cap 43 and having a hollow first filter input passage 872 for allowing water to flow through the filtering member 44;
The upper supporter 80 has a first connecting portion 851 formed inwardly recessed and a protruding portion 852 protruding symmetrically at a position facing the inner surface of the first connecting portion 851. [ Filter structure.
The method according to claim 1,
Wherein the first connection part (851) is symmetrically formed on both sides of an upper end of the upper supporter (80).
3. The method of claim 2,
The protrusion (852) protrudes from the first connection part (851) so as to protrude from the first connection part (851).
The method of claim 3,
Wherein the protrusions (852) are formed to be gradually narrowed downwardly from below and the first inclined surfaces (853) are formed on both sides of the protrusions (852).
5. The method of claim 4,
A head (60) detachably coupled to the housing cap (43), including a water inlet (611) for receiving raw water and a water outlet (612) for discharging purified water;
And a shaft 90 formed with a filtering channel 96 for connecting the water received by the water inlet 611 to the water outlet 612 via the filtering member 44. [ Filter structure.
The method of claim 5,
The shaft 90 includes an inner pipe 97 connected to the upper supporter 80 and rotated together with the upper supporter 80 while at least part of the shaft 90 is accommodated in the upper end of the upper supporter 80 Features a filter structure.
The method according to claim 6,
And a pair of second connection portions 972 protruded downward and received in the first connection portion 851 are formed at the lower end of the inner pipe 97.
8. The method of claim 7,
Wherein a cutout portion (973) is formed at the lower end of the inner pipe (97) so as to receive the protrusion (852) between the second connection portions (972).
9. The method of claim 8,
The second connecting portion 972 has a second inclined surface 974 formed on both sides of the second connecting portion 972 and having a slope corresponding to the first inclined surface 853, Is formed.

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