KR100582083B1 - Structure of Filter Housing for Refrigerator - Google Patents

Abstract

The present invention relates to a filter housing structure for a refrigerator, which can prevent leakage when the filter is replaced and can diversify the internal flow path of the refrigerator.

A filter housing structure for a refrigerator according to the present invention includes: a filter housing 30 having an inlet 30a and an outlet 30b; A filter case 40 which purifies the water supplied through the first inflow passage 39a connected to the inlet 30a and is detachable from the filter housing 30; A flow path changing part 34 having a first through hole 34a connecting the inlet 30a and the outlet 30b, and connecting the inlet 30a and the first inflow path 39a to each other; It consists of a locking portion 35 having a second through hole (35c) formed in the vertical direction staggered with the first through hole (34a), and comprises a flow path changing member (33) for changing the flow path. According to the above configuration, water can be supplied directly to each part of the refrigerator when the filter case is fastened to the filter housing, and water can be directly supplied to each part of the refrigerator when the filter case is not fastened, thereby preventing leakage. And there is an advantage that can diversify the flow path.

Refrigerator, Filter Housing

Description

Structure of filter housing in refrigerator             

1 is a schematic cross-sectional view showing a schematic structure of a conventional filter housing for a refrigerator.

Figure 2 is a schematic cross-sectional view showing a schematic structure of a filter housing for a refrigerator according to the present invention.

Figure 3 is a schematic cross-sectional view showing a state in which the filter is fastened to the filter housing for the refrigerator according to the present invention.

Figure 4a-4c is a schematic cross-sectional view showing a process of fastening the filter to the filter housing for the refrigerator according to the present invention.

Figure 5a-5c is a schematic cross-sectional view showing a process of changing the flow path before the filter is separated in the filter housing for the refrigerator according to the present invention.

Explanation of symbols on the main parts of the drawings

30: filter housing 30a: inlet

30b: exit 30c: support groove

30d: engaging jaw 31: lever

32: connecting rod 33: flow path changing member

34: flow path changing section 34a, 35c, 35d: through hole

35: locking part 35a: locking groove

35b: working slope 36: filter sensing member

37: coupling portion 38: filter rotation preventing member

38a: body 38b: spring

38c: support portion 39a, 40a: inflow passage

39b, 40b: outflow passage 40: filter case

40c: filter rotation preventing groove 42: fastening part

44: fastening jaw

The present invention relates to a structure of a filter housing for a refrigerator, and more particularly, to a structure of a filter housing for a refrigerator capable of reliably blocking a water purification passage to prevent water leakage and diversifying the internal passage of the refrigerator. .

Some of the commercially available refrigerators have a built-in water purifier (broad filter) inside the refrigerator, and are configured to supply purified water from the refrigerator to the outside of the refrigerator or to make ice from the purified water.

When replacing the filter of the water purifier, the water supply to the filter should be cut off. Therefore, conventionally, the solenoid valve which opens and closes the connection pipe connected to a water supply source was installed in the machine room. In order to replace the filter installed in the refrigerating compartment, when the refrigerating compartment door is opened, a door switch installed in contact with the door detects this and sends a signal to shut off the valve. That is, when an electrical signal is sent from the door switch, a magnetic field is generated by the electrical signal (power), and the valve is closed by the attraction force of the magnetic field. However, the structure as described above requires a separate electrical device composed of a door switch, a solenoid valve, etc., thus complicating the purified water flow path of the refrigerator. Therefore, the valve integral type water purification device which simplified the structure by installing the said valve in the said water purification device was developed. The valve integral water purifier is configured to mount a valve in the filter housing for the refrigerator and to shut off the water supply passage when the filter is separated from the refrigerator for the filter housing. A structure of a conventional valve integrated water purifier is described below with reference to the drawings.

1 is a schematic cross-sectional view for explaining the structure of a conventional refrigerator water purifier.

As shown, a conventional water purifier for a refrigerator includes a filter housing 10 and a filter case 20 coupled to a lower portion of the filter housing 10 and having a built-in filter.

One side of the filter housing 10 is formed with an inlet 10a through which tap water is introduced, and an outlet 11 through which purified water is discharged from the other side. In addition, a cylindrical coupling portion 16 inserted into the upper through hole 20a of the filter case 20 is formed at the inner central portion of the filter housing 10.

In addition, an inflow passage 10b connecting the inlet 10a and the upper portion of the filter case 20 is formed in the filter housing 10. The valve 12 is installed above the inflow passage 10b, and the valve 12 may open and close the inflow passage 10b to block water supply when the filter is replaced.

A spring 13 is fitted into the lower groove of the valve 12. The lower side of the spring 13 is inserted into the upper groove of the valve operating member 14. The lower outer periphery 14a of the valve actuating member 14 is rounded and is configured to be easily moved along the upper cam surface 20b of the filter case 20 which will be described later. It serves to interlock the valve 12 up and down.

In addition, a lowering inner periphery of the filter housing 10 has a locking step 18 for fastening the filter case 20 is formed.

On the other hand, the filter case 20 serves to guide the water flowing through the filter housing 10 to pass through the filter. The upper part of the filter case 20 is formed with a through hole (20a) is inserted into the center coupling portion 16 of the filter housing 10, the outer periphery of four places are fastened to the above-mentioned locking step (18) The fastening jaw 22 is formed. The fastening jaw 22 serves to prevent the filter case 20 from being separated from the filter housing 10.

Hereinafter, the operation relationship of the conventional filter housing for a refrigerator configured as described above will be described.

Insert the upper through hole (20a) of the filter case 20 into the coupling portion 16 of the filter housing 10, and when rotated, the cam surface (20b) that is the upper surface of the through hole (20a) of the filter case 20 To push up the valve operation member 14 inserted into the inflow path 10b. In this case, the valve 12 coupled to the valve operating member 14 and the spring 13 is moved upward. When the valve 12 is moved upward, the inflow passage 10b is opened. When the inflow passage 10b is opened, water is supplied to the filter case 20.

Water supplied to the filter case 20 is introduced into one side of the upper passage hole 20a of the filter case 20. Then, the water is purified while passing through a filter (not shown) built in the filter case 20, and is discharged to the coupling part 16 side of the filter housing 10 through one side of the through hole 20a of the filter case 20. At this time, although the passage through which the water is supplied to the filter case 20 and the passage through which the purified water flows out from the filter case 20 are the same, the water before the purified water and the purified water are not mixed with each other, the filter case ( This is because the through hole 20a of the 20 is inserted to the upper bottom of the coupling portion 16 of the filter housing 10. In this case, the through hole 20a of the filter case 20 is divided by the outer peripheral surface 16a (the left side in FIG. 1) and the filter (not shown) of the coupling part 16 of the filter housing 10. . Therefore, the water supplied from the filter housing 10 and the purified water from the filter case 20 do not mix with each other and flow in and out. The purified water flowing out to the filter housing 10 is supplied to the ice maker of the freezing chamber through the outlet 11 of the filter housing 10.

When the filter case 20 is rotated and removed from the filter housing 10, the valve operating member 14 descends on the cam surface 20b of the filter case 20. In this case, the valve 12 located above the valve operation member 14 is interlocked downward. The valve 12 moved downwards blocks the inflow passage 10b to block water supply to the filter case 20.

The present invention configured as described above has the following problems. The conventional filter housing structure for a refrigerator is configured such that the filter case is fastened to the filter housing and the inflow passage of the filter housing is opened. Therefore, in the process of fastening the filter case to the filter housing, the valve actuating member pushes up the valve before the filter case is completely fastened to the filter housing and the inflow passage starts to open. Therefore, the water is leaked into a fine gap between the filter housing and the filter case, there is a problem that the water is injected, leaked at a strong pressure because the gap is small.

In addition, since the inflow passage of the filter housing is blocked when the filter case is not fastened to the filter housing, there is a problem in that water supply to each part of the refrigerator is completely blocked even when it is not necessary to purify the filter housing.

The present invention has been made to solve the above problems, an object of the present invention is to provide a filter housing structure for a refrigerator that can effectively block the inflow passage when the filter is replaced to prevent water leakage.

Still another object of the present invention is to provide a filter housing structure for a refrigerator capable of supplying water to each part of the refrigerator even when the filter is not fastened.

In order to achieve the above object, the structure of the filter housing for a refrigerator according to the present invention, the filter housing is formed with an inlet and an outlet; A filter case which purifies water supplied through an inflow passage connected to the inlet and is detachable from the filter housing; A flow passage changing member having a first passage hole connecting the inlet and the outlet, and a second passage hole connecting the inlet and the inflow passage, and changing the passage; And a filter detecting member which prevents rotation of the flow path changing member in a state in which the filter case is not fastened to the filter housing so that the inflow passage is opened only when the filter case is fastened to the filter housing. It is configured to include.

According to the above configuration, since the flow path is changed only when the filter case is completely fastened to the filter housing and the flow path changing member is rotated, the water supply to the filter case can be effectively blocked until the filter case is completely fastened to the filter housing. There is an advantage to prevent leakage. In addition, even when the filter case is not fastened to the filter housing, it is possible to supply water to each part of the refrigerator, and there is an advantage of diversifying the internal flow path of the refrigerator. In addition, since water can be supplied to the filter case only when the filter case is fastened to the filter housing, leakage can be prevented.

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According to another specific embodiment of the present invention, the filter housing structure for a refrigerator according to the present invention is interlocked up and down along a cam surface that is formed to be inclined on one side of the lower surface of the channel changing member, and the inflow channel is formed by the channel changing member. In an open state, the filter case further comprises a filter preventing member for preventing rotation of the filter case.

According to the above configuration, since the filter case does not rotate in a state where water is supplied to the filter case side, leakage due to rotation of the filter case can be prevented.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention.

2 and 3 are schematic cross-sectional views showing a schematic structure of a filter housing for a refrigerator according to the present invention. As illustrated, the filter housing for a refrigerator according to the present invention includes a filter housing 30 having an inlet 30a and an outlet 30b and a first inflow passage 39a connected to the inlet 30a. Filter case 40 for purifying the water supplied through the filter, and the second inflow passage 40a of the filter case 40 or the outlet 30b of the filter housing 30 while rotating on one side of the filter housing 30. And a flow path changing member 33 for selectively supplying water to the furnace.

The filter housing structure for a refrigerator according to the present invention includes a filter detecting member 36 which prevents the flow path changing member 33 from rotating when the filter case 40 is not fastened, and the filter case 40. When the flow path is changed after the is fastened, the filter case 40 includes a filter rotation preventing member 38 to prevent the rotation.

The flow path changing member 33 is coupled to the lever 31 by a connecting rod 32. The lever 31 serves to change the flow path by rotating the flow path changing member 33. The flow path changing member 33 is composed of a flow path changing part 34 and a locking part 35.

The flow path changing part 34 has a first through hole 34a formed therein. The first through hole 34a supplies water in a state in which the filter case 40 is not fastened to the filter housing 30. It serves to connect the flow path from the inlet (30a) of the filter housing 30 to the outlet (30b).

The locking part 35 is formed below the flow path changing part 34, and a locking groove 35a to which the filter sensing member 36 to be described later is coupled is formed at one upper surface. When the filter detecting member 36 is inserted into the locking groove 35a, the rotation of the flow path changing member 33 is prevented, and thus the flow path is changed while the filter case is not fastened to prevent leakage of the flow to the filter case. It plays a role.

In addition, an operation inclined surface 35b, which is an inclined cam surface, is formed on one lower surface of the locking part 35. The filter rotation preventing member 38, which will be described later, is installed below the operation slope 35b of the locking part 35. When the operation inclined surface 35b rotates, the filter rotation preventing member 38 is interlocked up and down along the operation inclined surface 35b.

The filter rotation preventing member 38 has a body 38a, a spring 38b fitted to an outer circumference of the body 38a, and an upper surface of the spring 38b to support the body 38a. It consists of the support part 38c shape | molded.

As described above, the upper end of the body 38a is supported by the operating inclined surface 35b and interlocks up and down by the rotational movement of the operating inclined surface 35b. The support portion 38c formed on the upper portion of the body 38a serves to support the spring 38b. In addition, the spring 38b serves to elastically support the filter rotation preventing member 38 upward. Meanwhile, an evacuation groove 30c for the spring 38b and the support 38c is formed at one side of the housing 30.

As shown in FIG. 3, a second through hole 35c connected to the inlet 30a and a third through hole 35d connected to the outlet 30b are formed in the lock part 35. It is. By the way, the second through hole 35c and the third through hole 35d are formed in a vertical direction staggered with the first through hole 34a of the flow path changing portion 34. Therefore, the locking part 35 serves to supply water to the filter case 40 only when the filter case 40 is fastened to the filter housing 30 and the flow path changing member 33 is rotated to a predetermined position. do.

On the other hand, one side of the filter housing 30 is a "a" shaped filter detecting member 36 is provided. When the lower end portion is supported by the filter case 40, the filter sensing member 36 moves upwards, otherwise the upper portion is inserted into the upper locking groove 35a of the locking portion 35 described above. It serves to prevent the rotation of the change member (33).

In the central portion of the filter housing 30, a coupling portion 37 to which the fastening portion 42 of the filter case 40 to be described later is coupled is formed. And, at the outer periphery of the lower end of the filter housing 30, a locking step (30d) having an inclined surface is formed. The locking jaw 30d is a portion to which the locking jaw 44 of the filter case 40 to be described below is fastened.

Hereinafter, the structure of the filter case 40 is demonstrated, referring FIG. As shown in the drawing, a second inflow passage 40a through which water supplied to the filter housing 30 flows is formed at one side of the filter case 40, and at the center of the filter case 40, a water purification The second outflow passage 40b through which the extracted water flows out to the filter housing 30 is formed. The upper portion of the outflow passage 40 is formed with a fastening portion 42 protruding to be inserted into the coupling portion 37 of the filter housing 30.

In addition, the fastening jaw 44 is formed at four upper peripheral edges of the filter case 40. An inclined surface is formed in the circumferential direction of the fastening jaw 44, and is easily guided and fastened by the locking jaw 30d of the filter housing 30.

A filter rotation preventing groove 40c is formed on the upper surface of the some fastening jaw 44. The filter rotation preventing groove 40c is a portion into which the lower end of the filter rotation preventing member 38 described above is inserted. In the state where the filter rotation preventing member 38 is inserted into the filter rotation preventing groove 40c, the filter case 40 is fixed so as not to rotate.

Hereinafter, referring to FIGS. 4A and 4C, an operation relationship of fastening the filter case 40 to the filter housing 30 by the filter housing structure for a refrigerator according to the present invention and changing the flow path toward the filter case 40 will be described. It explains in detail.

4A is a state in which the filter case is not fastened to the filter housing 30. In this state, as shown, the first through hole 34a of the flow path changing part 34 is positioned to connect the inlet 30a and the outlet 30b of the filter housing 30. The second through hole 35c (see FIG. 4C) and the third through hole of the locking portion 35 which are formed in a vertical direction staggered with the first through hole 34a of the flow path changing portion 34. 35d) (see FIG. 4C) is not connected to the first inflow passage 39a and the first outflow passage 39b of the filter housing 30. Therefore, the water supply from the filter housing 30 to the filter case 40 side is cut off.

In addition, since the upper portion bent to one side of the filter sensing member 36 is inserted into the upper locking groove 35a of the locking portion 35, rotation of the flow path changing member 33 is prevented. Therefore, in the state in which the filter case 40 is not fastened to the filter housing 30, the flow path changing member 33 is rotated to prevent leakage of the flow path.

On the other hand, the upper end of the filter rotation preventing member 38 is supported by the operating inclined surface 35b of the lower surface of the locking part 35. However, as described above, in the state where the filter is not fastened to the filter housing 30, the filter rotation preventing member 38 is in the uppermost position of the operation inclined surface 35b.

4B illustrates that the filter case 40 is inserted into the filter housing 30, and the flow path changing member 33 is rotated by turning the lever 31 connected by the flow path changing member 33 and the connecting rod 32. An explanatory diagram showing the process.

The fastening part 42 having the second outflow passage 40b of the filter case 40 is inserted into the coupling part 37 of the filter housing 30 and rotated. In this case, the fastening jaw 44 formed on the outer circumference of the filter case 40 is raised along the inclined surface of the catching jaw 30d of the filter housing 30 to be completely fastened to the catching jaw 30d. At this time, since the inclined surface is formed on one side of the fastening jaw 44, the fastening jaw 44 can be easily fastened to the locking jaw (30d).

When the filter case 40 is fastened to the filter housing 30 as described above, by the upper surface of one side of the fastening jaw 44 of the filter case 40, the filter sensing member mounted on one side of the filter housing 30. 36 is moved upward. In this case, the upper portion of the filter sensing member 36 is released from the locking part 35 of the locking part 35 of the flow path changing member 33. Therefore, the flow path changing member 33, which has been fixed by the filter sensing member 36, becomes rotatable.

In this state, when the lever 31 connected by the flow path changing member 33 and the connecting rod 32 is turned, the flow path changing member 33 rotates. In this case, the upper flow path changing part 34 of the flow path changing member 33 and the lower locking part 35 of the flow path changing member 33 also rotate.

When the flow path changing unit 34 rotates, the position of the first through hole 34a in the flow path changing unit 34 connecting the inlet 30a and the outlet 30b of the filter housing 30 is changed. Therefore, the flow path between the inlet 30a and the outlet 30b of the filter housing 30 connected by the first through hole 34a is blocked.

When the locking part 35 rotates, the body 38a of the filter rotation preventing member 38 supported by the lower surface operating inclined surface 35b of the lock unit 35 is the operating inclined surface 35b. It is led downward along.

As described above, when the body 38a of the filter rotation preventing member 38 is moved downward, the lower end of the filter rotation preventing member 38 is formed at one side of the fastening jaw 44 of the filter case 40. It is inserted into the filter rotation preventing groove (40c). Thus, the filter case 40 is prevented from rotating. As a result, the filter case 40 is fastened to the filter housing 30 as described above, and after the flow path changing member 33 is rotated so that the flow path is changed, the filter case 40 in the filter housing 30 is not desired. ) Can be separated to prevent leakage.

4C is an explanatory view showing a state after the filter case 40 is fastened to the filter housing 30. As shown in the drawing, by turning the lever 31, the flow path changing member 33 is rotated by about 90 ° such that water is supplied from the filter housing 30 to the filter case 40.

In this case, the flow path connected to the outlet 30b from the inlet 30a of the filter housing 30 is closed by the first passage hole 34a of the flow path changing member 34 of the flow path changing member 33. In addition, the second through hole 35c and the third through hole 35d of the locking part 35 of the flow path changing member 33 are formed in the vertical direction staggered with the first through hole 34a. It is connected with the first inflow channel 39a and the first outflow channel 39b of (30).

On the other hand, the first inflow passage (39a) of the filter housing 30 is connected to the second inflow passage (40a) of the filter case 40, the first outflow passage (39b) of the filter housing is the filter It is connected to the second outflow passage 40b of the case 40.

Therefore, the water supplied to the inlet 30a of the filter housing 30 is the second inlet 35c of the locking part 35 of the flow path changing member 33 and the first inlet of the filter housing 30. It is supplied to the second inflow passage 40a side of the filter case 40 through the flow passage 39a. The water supplied to the second inflow passage 40a is purified by passing through a filter (not shown) built in the filter case 40, and the purified water is the second outflow passage 40b of the filter case 40. ), The outlet passage 39b of the filter housing 30 and the third through hole 35d of the locking portion 35 of the passage changing member 33 are sequentially passed through the outlet 30b of the filter housing 30. It is supplied to each part of the refrigerator.

As described above, in the state in which the filter case 40 is fastened to the filter housing 30, the filter sensing member 36 moves upward, and the upper portion of the filter sensing member 36 is locked. Since it is separated from the locking groove 35a of the part 35, the flow path changing member 33 can be rotated. Therefore, since the flow path may be changed after the filter case 40 is fastened to the filter housing 30, the flow path may be changed while the filter case 40 is not fastened to prevent leakage.

On the other hand, the filter rotation preventing member 38 is guided to the lower side by the inclined operating surface 35b of the locking part 35 by the rotation of the flow path changing member 33. Then, the lower end of the filter anti-rotation member 38 is inserted into the filter anti-rotation groove 40c of the upper surface of the fastening jaw 44 of the filter case 40 to prevent rotation of the filter case 40. Therefore, in the state where water is supplied from the filter housing 30 to the filter case 40 side, since the filter case 40 is not separated from the filter housing 30, water leakage can be prevented.

5A is an explanatory view showing a state in which the filter case 40 is fastened to the filter housing 30. That is, water is being supplied from the filter housing 30 to the filter case 40, and the filter case 40 is fixed by the filter rotation preventing member 38.

5B is an explanatory view showing a process of changing the flow path by turning the lever 31 before removing the filter case 40 from the filter housing 30.

As shown in the drawing, when the lever 31 is turned to one side (left side in FIG. 5B), the flow path changing member 33 connected by the lever 31 and the connecting rod 32 is rotated. In this case, the first passage hole 34a of the flow path changing part 34 of the flow path changing member 33 is moved toward the inlet 30a of the filter housing 30.

In addition, the positions of the locking part 35, the second through hole 35c and the third through hole 35d of the flow path changing member 33 are also changed, so that the inlet 30a and the first of the filter housing 30 are changed. The flow path between the inflow passage 39a and the outlet 30b of the filter housing 30 and the first outlet passage 39b is blocked. Therefore, the water supply to the second inflow passage 40a of the filter case 40 through the first inflow passage 39a of the filter housing 30 is blocked. In addition, the purified water is blocked from being discharged to the first outflow path 39b of the filter housing 30 through the second outflow path 40b of the filter case 40.

5C is an explanatory view showing a state in which the flow path is changed by rotating the flow path changing member 33 in the filter housing 30 by 90 °.

As shown, when the flow path changing member 33 rotates by 90 °, the first through hole 34a of the flow path changing part 34 is the inlet 30a and the outlet 30b of the filter housing 30. It serves to connect. Therefore, the water supplied through the inlet 30a of the filter housing 30 passes through the first through hole 34a of the flow path changing unit 34 and is supplied to the outlet 30b of the filter housing 30. do. Therefore, according to the filter housing structure for a refrigerator according to the present invention, as described above, water can be supplied to each part of the refrigerator even when the filter case 40 is not fastened to the filter housing 30. Since the water quality of the water supplied to the refrigerator is different according to the region, when it is not necessary to purify the water, if the flow path is changed as described above, the supplied water may be directly supplied to each part of the refrigerator without passing through the water purifier.

On the other hand, in the state in which the flow path changing member 33 is completely rotated as described above, the filter rotation preventing member 38, the upper end of which is supported by the operating inclined surface 35b of the locking portion 35, is the operating inclined surface. It is moved upward by receiving the restoring force of the spring 38b mentioned above along 35b. Therefore, the lower end of the body 38a of the filter rotation preventing member 38 is completely separated from the filter rotation preventing groove 40c of the upper surface of the fastening jaw 44 of the filter case 40.

When the filter rotation preventing member 38 is separated from the filter rotation preventing groove 40c of the filter case 40 as described above, the filter case 40 may be rotated. Accordingly, when the filter case 40 is rotated, the fastening jaw 44 descends on the inclined surface of the catching jaw 30d and is separated.

As described above, when the filter case 40 is separated from the filter housing 30, the filter sensing member 36 supported by the upper surface of the fastening jaw 44 of the filter case 40 is lowered (FIG. 4A). Reference). In this case, an upper portion of the filter sensing member 36 is inserted into the upper locking groove 35a of the locking part 35, and the filter sensing member 36 prevents the flow path changing member 33 from rotating. . Therefore, in a state where the filter case 40 is not fastened to the filter housing 30, the flow path changing member 33 is not rotated, thereby preventing leakage due to flow path change.

As described above, according to the filter housing structure for a refrigerator according to the present invention, after replacing the filter case to the filter housing, the filter is supplied to the filter case side only after changing the flow path by operating the lever. Therefore, water can be supplied to the filter case side before the filter case is completely fastened to the filter housing to prevent the leakage of water.

A second effect of the present invention is that, when the filter case is not fastened to the filter housing, the water supply flows directly from the filter housing inlet to the filter housing outlet, so that water is not separated from the filter housing to the respective parts of the refrigerator. Can be supplied.

The third effect of the present invention is that the rotation of the flow path changing member is not prevented by the filter sensing member when the filter case is not fastened, so that leakage caused by rotation of the flow path changing member can be prevented if it is not desired. .

The fourth effect of the present invention is that if the flow path changing member is rotated to change the flow path toward the filter case after the filter case is fastened, the filter case is fixed by the filter rotation preventing member installed at one side of the filter housing. Therefore, after the flow path is changed to the filter case side, leakage due to rotation of the filter case can be prevented.

Claims (5)

A filter housing having an inlet and an outlet; A filter case which purifies water supplied through an inflow passage connected to the inlet and is detachable from the filter housing; A flow passage changing member having a first passage hole connecting the inlet and the outlet, and a second passage hole connecting the inlet and the inflow passage, and changing the passage; And A filter sensing member installed at one side of the filter housing and preventing rotation of the flow path changing member in a state in which the filter case is not fastened to the filter housing so that the inflow passage is opened only when the filter case is fastened to the filter housing; Refrigerator filter housing structure, characterized in that comprises a. delete The method of claim 1, The flow path changing member, A lock groove into which one side of the filter sensing member is inserted to prevent rotation of the flow path changing member, The filter sensing member, When the filter case is fastened to the filter housing, the filter housing structure for a refrigerator, characterized in that configured to move up and out of the locking groove. The method according to any one of claims 1 to 3, When the flow path changing member is interlocked up and down along the cam surface formed to be inclined on one side, and further comprising a filter anti-rotation member for preventing the rotation of the filter case in the state in which the flow path is opened by the flow path changing member. The structure of the filter housing for refrigerators characterized by the above-mentioned. The method of claim 4, wherein The filter rotation preventing member, A rod-shaped body whose upper end is supported by the lower surface of the flow path changing member; A spring inserted into an outer circumference of the body to elastically support the body upward; Consists of a support for supporting the upper surface of the spring, The filter case, The filter housing of the refrigerator, characterized in that the upper surface is provided with a filter preventing groove for inserting the body.

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