CN211595223U - Water filter and refrigerator with same - Google Patents

Abstract

An embodiment of the present invention provides a water filter and a refrigerator, wherein the water filter includes a casing, a cavity formed in the casing, and a filter element disposed in the cavity; the casing is provided with a water inlet and A water outlet, a water inlet cavity and a water outlet cavity are formed in the cavity, the water inlet cavity is located between the upstream side of the filter element and the water inlet, and the water outlet cavity is located between the downstream side of the filter element and the water inlet. between the water outlets; the filter element includes a first nuclear pore membrane, and the first nuclear pore membrane is located on the downstream side of the filter element. In the water filter disclosed by the utility model, the downstream side of the filter element is covered with a nuclear pore membrane, and after the water flows through the filter element, the water also flows through the nuclear pore membrane, so that the filtering effect is better, there is no secondary pollution, and the filtered water is improved. The taste is improved, the odor is removed, and the user experience is good.

Description

Water filter and refrigerator having the same

technical field

The utility model relates to the field of water filtration, in particular to a water filter and a refrigerator having the same.

Background technique

At present, in order to facilitate the use of users, many refrigerator products are equipped with an ice maker or an external water dispenser on the refrigerator, and a corresponding water supply water circuit needs to be configured for this purpose. In order to purify the water in the water supply waterway, a water filter is generally installed on the water supply waterway; when the water filter in the prior art is just used, it is generally necessary to release a large amount of water to clean the filter element, and during the use process , the filter element material has the phenomenon of falling off, and the filter element material after falling off will enter the filtered water. Drinking water containing filter materials for a long time can cause harm to the human body.

Therefore, there is a need to improve the water filter in the prior art to solve the above problems.

SUMMARY OF THE INVENTION

The utility model aims to provide a reliable water filter and a refrigerator with the same.

In order to achieve the purpose of the above utility model, an embodiment of the present utility model provides a water filter, which includes a casing, a cavity formed in the casing, and a filter element disposed in the cavity; the casing is provided with a water inlet A water inlet cavity and a water outlet cavity are formed in the cavity, the water inlet cavity is located between the upstream side of the filter element and the water inlet, and the water outlet cavity is located on the downstream side of the filter element and the water outlet. between the water outlets; the filter element includes a first nuclear pore membrane, and the first nuclear pore membrane is located on the downstream side of the filter element.

As a further improvement of the embodiment of the present invention, the filter element includes a main body and a hollow part provided in the main body, the hollow part penetrates the main body along the length direction of the main body; the outer surface of the main body forms the filter element On the upstream side of the main body, the inner surface of the main body forms the downstream side of the filter element, and the first nuclear pore membrane covers the inner surface of the main body.

As a further improvement of the embodiment of the present invention, the body includes a carbon rod and a PP cotton covering the outer surface of the carbon rod, and the first nuclear pore membrane is covered with a reverse osmosis membrane.

As a further improvement of the embodiment of the present invention, the body is provided with a plurality of capillary holes, and the capillary holes extend from the outer surface of the body to the inner surface of the body.

As a further improvement of the embodiment of the present invention, the capillary pores are formed by nuclear bombardment.

As a further improvement of the embodiment of the present invention, the filter element further includes a second nuclear pore membrane, and the second nuclear pore membrane is located on the upstream side of the filter element.

As a further improvement of the embodiment of the present invention, the filter element further includes a PP cotton layer, an activated carbon layer and a reverse osmosis membrane layer, and the PP cotton layer, the activated carbon layer, the first nuclear pore membrane and the reverse osmosis membrane layer are obtained from the The upstream side to the downstream side of the filter element are stacked in sequence.

As a further improvement of the embodiment of the present invention, the housing includes a head and a casing detachably connected to the head; the water inlet and outlet are arranged on the head, and the filter element is arranged on the head inside the casing.

As a further improvement of the embodiment of the present invention, the end of the cavity of the casing away from the head is provided with a filter element fixing member, and the filter element fixing member includes an end cover that is adapted to the shape of the end of the filter element and a filter element fixed at the end of the filter element. The end cover is a protruding holding part, and the end cover is press-fitted between the inner wall of the casing and the end of the filter element.

Another aspect of the present utility model discloses a refrigerator, which includes a refrigerating compartment and a door for opening or closing the refrigerating compartment, the refrigerator further includes the water filter described in any one of the above embodiments, and the The water filter is arranged inside the refrigeration compartment or the inside of the door.

Compared with the prior art, in the water filter disclosed in the present invention, by arranging a nuclear pore membrane on the downstream side of the filter element, the water also flows through the nuclear pore membrane after passing through the filter element, so that the filtering effect is better, and there is no secondary pollution. And the filtered water improves the taste, removes the odor, and has a good user experience.

Description of drawings

1 is a schematic structural diagram of a refrigerator in an embodiment of the present invention;

2 is a schematic structural diagram of a water filter in an embodiment of the present invention;

Fig. 3 is the sectional schematic diagram of the water filter in Fig. 2;

4 is a schematic cross-sectional view of a water filter in another embodiment of the present invention.

Detailed ways

The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and structural, method, or functional transformations made by those of ordinary skill in the art according to these embodiments are all included within the protection scope of the present invention.

It should be understood that terms such as "upper", "above", "lower", "below" and the like used herein indicating relative positions in space are for convenience of description to describe the relative position of an element or feature as shown in the drawings. relationship to another element or feature. The term spatially relative position may be intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures.

As shown in FIG. 1 , an embodiment of the present invention discloses a refrigerator. The refrigerator includes a box body, a refrigerating compartment 1 arranged in the box body, and a door body 2 for opening or closing the refrigerating compartment. The door body 2 is provided with a water filter 100, an ice maker 200 and a distributor 300. The water filter 100 is used to filter the external water source and supply it to the ice maker 200 and/or the dispenser 300 through a water pipe. Of course, in other embodiments, the filter can also be arranged in the box, and the same can be implemented to the ice maker. and/or the water circuit of the distributor.

As shown in FIGS. 1-4 , the water filter 100 of the present invention includes a casing 110 , a cavity formed in the casing 110 , and a filter element 120 disposed in the cavity. The casing 110 is provided with a water inlet 1111 and a water outlet 1112, and a water inlet cavity 1121 and a water outlet cavity 1122 are formed in the cavity. The water inlet cavity 1121 is located on the upstream side of the filter element 120 and the water inlet 1111. In between, the water outlet cavity 1122 is located between the downstream side of the filter element 120 and the water outlet 1112 . The filter element 120 includes a first nuclear pore membrane 121 , and the first nuclear pore membrane 121 is located on the downstream side of the filter element 120 .

In the water filter 100 disclosed in the present invention, by arranging a nuclear pore membrane on the downstream side of the filter element 120, the water also flows through the nuclear pore membrane after passing through the filter element 120, so that the filtering effect is better, there is no secondary pollution, and the filtered The water improves the taste, removes the odor, and the user experience is good.

Nuclear pore film refers to the use of high-energy rays, such as 4-5MeV α particles, to irradiate a polycarbonate homogeneous film to break the chemical bonds in the polymer, and then etch to obtain cylindrical pores, and the pore size can be controlled at 0.1 The membrane in the range of ~1um is a capillary membrane. Using the nuclear pore membrane in the filter element of the water filter can filter the fine particles in the water and improve the filtering effect of the original filter element.

Further, the filter element 120 may further include a second nuclear pore membrane, and the second nuclear pore membrane is located on the upstream side of the filter element 120 . In this way, nuclear pore membranes are provided on both the upstream side and the downstream side of the filter element, which can better improve the filtering effect.

As shown in FIG. 2 , the housing 110 includes a head 111 and a casing 112 detachably connected to the head 111 . The water inlet 1111 and the water outlet 1112 are provided in the head 111 , and the filter element 120 is provided in the casing 112 . Specifically, the housing 112 and the head 111 are detachably connected, the housing 112 is provided with a first thread, the head 111 is provided with a second thread that is matched with the first thread, and the housing 112 can be rotated by rotating the housing 112. The body 112 is connected to the head 111 , or the casing 112 is detached from the head 111 . The casing 112 and the head 111 are detachably connected, so that the casing 112 and the filter element 120 can be conveniently replaced regularly.

As shown in FIG. 3 , in an embodiment of the present invention, the filter element 120 includes a main body 122 and a hollow portion disposed in the main body 122 , and the hollow portion penetrates the main body along the length direction of the main body 122 . The outer surface of the main body 122 forms the upstream side of the filter element 120 , the inner surface of the main body 122 forms the downstream side of the filter element 120 , and the first nuclear pore membrane 121 covers the inner surface of the main body 122 . That is, the water outlet cavity 1122 is formed by the hollow part in the main body 122, and the filter element 120 cooperates with the structure of the casing 110, so that the water must flow through the main body 122 of the filter element 120 before entering the water outlet cavity 1122, thereby improving the filtering effect. , and the water filter can set the relative positions of the water inlet and the water outlet more flexibly. Specifically, the filter element 120 is a hollow cylinder, wherein the hollow portion extends along the axis of the cylinder.

Further, one end of the cavity of the housing 110 away from the head 111 is provided with a filter element fixing member 113 , and the filter element fixing member 113 includes an end cover 1131 adapted to the shape of the end of the filter element 120 , and an end cover 1131 on the end cover 1131 . The upper protruding holding portion 1132 , the end cover 1131 is press-fitted between the inner wall of the housing 110 and the end of the filter element 120 . The end cover 1131 can cover the end of the filter element 120, the holding part 1132 can further fix the outer surface of the filter element 120, and the filter element fixing member 113 can be arranged to fix the filter element 120 in the cavity, so that it is not easy to move, and the end cover 1131 is arranged on the casing The inner wall of the filter element 110 and the end of the filter element 120 are tightly squeezed by the two to prevent the unfiltered water from not passing through the filter element and entering the hollow part directly from the gap between the end of the filter element 120 and the end of the housing 110 .

Further, the body 122 includes a carbon rod and a PP cotton covering the outer surface of the carbon rod, and the first nuclear pore membrane 121 is covered with a reverse osmosis membrane. The use of PP cotton can filter out particulate impurities in the water and perform coarse filtration on the water. Carbon rod, also known as sintered activated carbon, is made of high-quality activated carbon as raw material, and then forms its structure with a low-heat-melting adhesive, which is continuously extruded, and then sintered and solidified at low temperature to form a certain strength. Carbon rods are a relatively common filter element, but the hidden dangers of water filters that only use carbon rods as filter elements are: there is carbon powder in the water filtered by the carbon rods, which may cause secondary pollution. By covering the downstream side of the carbon rod with the first nuclear pore membrane and the reverse osmosis membrane, the water filtered by the carbon rod passes through the nuclear pore membrane and the reverse osmosis membrane to fully filter the dropped carbon powder and other harmful substances, eliminating the secondary Pollution.

In another embodiment, a plurality of capillary holes may be opened on the body, and the capillary holes extend from the outer surface of the body to the inner surface of the body. Preferably, the capillary pores are formed by nuclear bombardment. That is to say, nuclear bombardment is performed on the body of the filter element, and then corrosion is performed, thereby obtaining cylindrical holes on the body, and the pore size can be controlled in the range of 0.1-1um. Thus, the body itself can be seen as a kind of nuclear pore layer.

As shown in FIG. 4 , in another embodiment of the present invention, in addition to the first nuclear pore membrane layer 1211 , the filter element 120 further includes a PP cotton layer 1212 , an activated carbon layer 1213 and a reverse osmosis membrane layer 1214 . The PP cotton layer 1212 , the activated carbon layer 1213 , the first nuclear pore membrane layer 1211 and the reverse osmosis membrane layer 1214 are sequentially stacked from the upstream side to the downstream side of the filter element 120 . That is to say, the filter element is formed by stacking four layers of filter materials in sequence. In this way, the external water source will first enter from the outside of the PP cotton layer 1212, be finely filtered through the activated carbon layer 1213, and then enter the nuclear pore membrane layer 1211 to filter out carbon particles that may fall off the activated carbon layer 1213, and the reverse osmosis layer 1214 further improves the precision The filtration effect is achieved, and finally water flows out from the downstream side formed by the outer side of the reverse osmosis membrane layer 1214 .

Specifically, according to the structure of the filter and the position of the water inlet and outlet, the filter element can have different shapes. If the structure of the filter is shown in FIG. 4 , the water inlet 1111 and the water outlet 1112 are located at the same end of the casing (that is, the water inlet 1111 and the water outlet 1112 are both located at the end of the head), the filter element 120 can be a hollow part in the middle. Cylindrical, PP cotton layer 1212, activated carbon layer 1213, nuclear pore membrane layer 1211 and reverse osmosis membrane layer 1214 are all cylindrical and the diameters decrease in turn, and the four layers of filter materials are stacked in sequence, so that water enters the water from the water inlet 1111 The cavity 1121 will enter the hollow part after passing through four layers of filter materials in sequence, and then flow to the water outlet 1112 from the hollow part. At this time, the activated carbon layer can be a carbon rod or other forms of activated carbon. In addition, the filter element may also be configured in a flat plate shape or other hollow shape.

In other embodiments, the water filter can also be provided with a water inlet at one end of the housing and a water outlet at the opposite end (ie, the water inlet/outlet is located at one end of the head, and the water outlet/inlet is located on the housing away from the end of the head), the filter element can also be a tiled shape without a hollow part (the thickness direction of the filter element is consistent with the length direction of the shell), and the edge of the filter element is connected and sealed with the inner wall of the shell, so as to seal the cavity. It is divided into oppositely arranged water inlet cavity and water outlet cavity. The water enters the water inlet cavity from the water inlet, passes through four layers of filter materials in sequence, then enters the water outlet cavity, and finally flows to the water outlet.

The direction of the arrows in Figure 3 shows the direction of water flow in the water filter. As can be seen from the direction of the arrow in the figure, the water enters the water inlet cavity 1121 from the water inlet 1111, and then flows through the filter element 120, which first passes through the body 122, then passes through the first nuclear pore membrane 121, and then enters the hollow part, that is, the water outlet cavity 1122; the water in the water outlet cavity 1122 continues to flow back to the water outlet 1112 under water pressure, and the filtered water will flow out from the water outlet 1112 and enter the water supply pipe, and continue to flow to the ice maker 200 and/or the dispenser 300. The water flow direction in FIG. 4 is the same as that in FIG. 3 , and details are not repeated here.

In the water filter disclosed by the utility model, the nuclear pore membrane is covered on the downstream side of the filter element, and after the water flows through the filter element, the water also flows through the nuclear pore membrane, so that the filtering effect is better, there is no secondary pollution, and the filtered water is improved. Taste, remove odor. A nuclear pore membrane may also be covered on the upstream side of the filter element. In this way, the nuclear pore membrane is covered on both the upstream side and the downstream side of the filter element, which can better improve the filtering effect. The shell and the head are detachably connected, which can facilitate the regular replacement of the shell and the filter element. There is a filter element fixing part in the cavity, which can fix the filter element in the cavity, so that it is not easy to move, and the end cover is arranged between the end of the filter element and the end of the shell and is tightly squeezed by the two to prevent unfiltered. Water enters the hollow of the filter element directly from between the end of the filter and the end of the housing. In addition, the filter element can also be formed by successively layering four layers of filter materials: PP cotton layer, activated carbon layer, nuclear pore membrane layer and reverse osmosis membrane layer.

It should be understood that although this specification is described in terms of embodiments, not every embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole, and each The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

A series of detailed descriptions listed above are only specific descriptions for the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalents made without departing from the technical spirit of the present invention Embodiments or changes should all be included within the protection scope of the present invention.

Claims (10)

1. A water filter, characterized in that it comprises a casing, a cavity formed in the casing and a filter element arranged in the cavity; a water inlet and a water outlet are provided on the casing, and the casing is A water inlet cavity and a water outlet cavity are formed, the water inlet cavity is located between the upstream side of the filter element and the water inlet, and the water outlet cavity is located between the downstream side of the filter element and the water outlet; the The filter element includes a first nuclear pore membrane located on the downstream side of the filter element. 2 . The water filter according to claim 1 , wherein the filter element comprises a main body and a hollow part provided in the main body, and the hollow part penetrates the main body along the length direction of the main body; the main body The outer surface of the core forms the upstream side of the filter element, the inner surface of the body forms the downstream side of the filter element, and the first nuclear pore membrane covers the inner surface of the body. 3 . The water filter according to claim 2 , wherein the body comprises a carbon rod and a PP cotton covering the outer surface of the carbon rod, and the first nuclear pore membrane is covered with a reverse osmosis membrane. 4 . 4 . The water filter according to claim 2 , wherein a plurality of capillary holes are formed on the main body, and the capillary holes extend from the outer surface of the main body to the inner surface of the main body. 5 . 5. The water filter of claim 4, wherein the capillary pores are formed by nuclear bombardment. 6 . The water filter according to claim 1 , wherein the filter element further comprises a second nuclear pore membrane, and the second nuclear pore membrane is located on the upstream side of the filter element. 7 . 7. water filter according to claim 1 is characterized in that, described filter element also comprises PP cotton layer, activated carbon layer and reverse osmosis membrane layer, described PP cotton layer, activated carbon layer, the first nuclear pore membrane and reverse osmosis membrane layer. The permeable membrane layers are sequentially stacked from the upstream side to the downstream side of the filter element. 8 . The water filter according to claim 1 , wherein the housing comprises a head and a casing detachably connected to the head; the water inlet and the water outlet are provided on the head, 9 . The filter element is arranged in the casing. 9 . The water filter according to claim 8 , wherein a filter element fixing member is provided in the cavity of the housing, and the filter element fixing member comprises an end cover adapted to the shape of the end portion of the filter element and a filter element fixing member arranged in the cavity of the casing. 10 . The end cover is a protruding holding part, and the end cover is press-fitted between the inner wall of the casing and the end of the filter element. 10. A refrigerator, comprising a refrigerating compartment and a door for opening or closing the refrigerating compartment, wherein the refrigerator further comprises the water filter according to any one of claims 1-9 , the water filter is arranged inside the refrigeration compartment or the inside of the door.

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