CN218069919U

CN218069919U - Deionizing device

Info

Publication number: CN218069919U
Application number: CN202222103935.5U
Authority: CN
Inventors: 曾建林
Original assignee: Shanghai Fleetguard Filter Co ltd
Current assignee: Shanghai Fleetguard Filter Co ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2022-12-16
Anticipated expiration: 2032-08-10

Abstract

The utility model discloses a deionizer belongs to hydrogen fuel cell technical field. The deionizer comprises an assembly upper end cover, an assembly shell, an inner core assembly and an inner core Venturi tube, wherein the inner core Venturi tube is arranged in the inner core assembly, a first filtering mounting frame and a second filtering mounting frame are arranged on the same side of a base, resin is filled between the first filtering mounting frame and the second filtering mounting frame, when cooling liquid flows into the deionizer and is filtered by the resin and then passes through the second filtering mounting frame, the cooling liquid is divided into inner and outer straight-through fluids and upper and lower straight-through fluids due to a first flow guide hole and a first hollow structure, the inner and outer straight-through fluids flow through the Venturi tube main body through a second flow channel to form high flow velocity, and the upper and lower straight-through fluids are guided into the Venturi tube main body through a flow guide pipe, the inner and outer straight-through fluids at the high flow velocity drive the upper and lower straight-through fluids to flow, so that the flow velocity of the upper and lower straight-through fluids in the first flow channel is accelerated, and the deionizer has higher exchange capacity and smaller exchange capacity.

Description

Deionizing device

Technical Field

The utility model relates to a hydrogen fuel cell technical field especially relates to a deionizer.

Background

The deionizer is applied to a cooling system of a hydrogen fuel cell engine and is mainly used for removing free conductive ions in a cooling liquid. During the operation of the stack system, the bipolar plates generate high voltage, which requires that the generated high voltage is not transmitted to the whole cooling circulation channel through the cooling liquid in the middle of the bipolar plates, and therefore requires that the cooling liquid is in a low conductivity state.

In the design and later application of the deionizer, how to maximize the exchange capacity of the deionizer in the limited space of the whole vehicle and control the flow resistance of the product within a reasonable design range becomes a main direction of industry competition.

The traditional deionizer has a single flow direction of an inner core, and mainly adopts an inner-outer through type or an upper-lower through type. The flow resistance of the internal and external straight-through structure is small, but due to the structural design limitation, the built-in resin is less, and the exchange capacity is low. The upper and lower straight-through structure is provided with more built-in resin and has larger exchange capacity, but the flow resistance is larger because the resin is too concentrated.

Therefore, it is desirable to provide a deionizer to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a deionizer makes deionizer compromise bigger exchange capacity and littleer flow resistance.

In order to realize the purpose, the following technical scheme is provided:

a deionizer, comprising:

the upper end cover of the assembly is provided with a liquid inlet;

the assembly upper end cover is arranged on the assembly shell in a sealing and buckling mode, an installation cavity is formed between the assembly upper end cover and the assembly shell, the liquid inlet is communicated with the installation cavity, and a liquid outlet is formed in the bottom of the assembly shell;

the inner core assembly is arranged in the installation cavity and comprises a base with a liquid outlet, and a first filtering mounting frame and a second filtering mounting frame which are positioned on the same side of the base, wherein the liquid outlet is communicated with the liquid outlet, the first filtering mounting frame is arranged at the liquid outlet, the second filtering mounting frame is arranged at the outer edge of the base, the first filtering mounting frame is positioned inside the second filtering mounting frame, resin is filled between the first filtering mounting frame and the second filtering mounting frame, a first flow guide hole is formed in the top of the first filtering mounting frame, and a plurality of first hollow structures are circumferentially arranged on the side wall of the first filtering mounting frame;

inner core venturi, install in the first mounting bracket that filters, inner core venturi include the venturi main part and be provided with the honeycomb duct of first runner in with, the macrostoma end of venturi main part with the leakage fluid dram intercommunication, the one end of honeycomb duct with first water conservancy diversion hole intercommunication, the other end of honeycomb duct extend set up in the venturi main part, the outer wall of honeycomb duct with form the second runner between the internal face of venturi main part.

As an alternative of the deionizer, a plurality of reinforcing ribs are connected between the outer wall surface of the flow guide pipe and the inner wall surface of the Venturi tube main body.

As an alternative scheme of the deionizer, a second flow guide hole is formed in the top of the second filtering mounting frame, and a plurality of second hollow structures are circumferentially arranged on the side wall of the second filtering mounting frame.

As an alternative to the deionizer, a plurality of third hollow structures are disposed at the top of the second filter mounting frame, and the plurality of third hollow structures are radially distributed outward along the radial direction of the second diversion hole.

As the alternative of deionizer, the second filters the mounting bracket including dismantling second inner core upper end cover and the second inner core casing of connection, the second inner core casing with the base is integrated structure, second inner core upper end cover is provided with second water conservancy diversion hole and a plurality of third hollow out construction, second inner core casing is provided with a plurality of second hollow out construction.

As an alternative of the deionizer, the second inner core upper end cover is provided with a first filter screen, and the second inner core shell is circumferentially covered with a second filter screen.

As the alternative of deionizer, first filtration mounting bracket includes first inner core upper end cover and first inner core casing, first inner core upper end cover first inner core casing the base with second inner core casing structure as an organic whole, first inner core upper end cover is provided with first water conservancy diversion hole, first inner core casing is provided with a plurality ofly first hollow out construction.

As an alternative scheme of the deionizer, a third filter screen is arranged at the position of the first guide hole in a covering mode, and a fourth filter screen is arranged on the first inner core shell in a covering mode in the circumferential direction.

As an alternative scheme of the deionizer, one end, far away from the first filtering mounting frame, of the base is provided with a mounting pipe, the inner diameter of the mounting pipe is larger than that of the liquid outlet, and a first sealing ring is arranged between the mounting pipe and the bottom of the assembly shell.

As an alternative of the deionizer, a second sealing ring is arranged at the joint of the assembly upper end cover and the top of the assembly shell.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a deionizer, install the inner core assembly in the installation cavity by the formation between assembly upper end cover and the assembly casing, the inner core venturi tube sets up in the inner core assembly, first filter mounting bracket and second filter the mounting bracket and install the same one side at the base, and fill the resin between first filter mounting bracket and the second filter the mounting bracket, flow into deionizer as the coolant liquid, the coolant liquid filters the back through the second when filtering the mounting bracket through the resin, because first water conservancy diversion hole and first hollow out construction's setting, divide into by outer interior through type fluid of outer to inner flow and the upper and lower through type fluid that from top to bottom flows, interior and exterior through type fluid flows through the second runner and flows through the venturi tube main part and produces the venturi effect and forms the high velocity of flow, because interior and exterior through type fluid of high velocity of flow passes through honeycomb duct to the venturi tube main part, interior and exterior through type fluid drive upper and lower through type fluid fast flow of high velocity of flow from top to bottom of high velocity, and then accelerated the velocity of flow of upper and lower through type fluid in the first runner, make deionizer compromise bigger exchange capacity and littleer flow resistance, improve product availability factor.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic assembly diagram of a deionizer in an embodiment of the present invention;

FIG. 2 is an exploded view of an embodiment of the present invention;

FIG. 3 is a first schematic exploded view of an inner core assembly and an inner core venturi tube according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of an inner core venturi tube according to an embodiment of the present invention;

FIG. 5 is a top view of an inner core venturi in an embodiment of the present invention;

FIG. 6 is a cross-sectional view of an inner core venturi in an embodiment of the present invention;

FIG. 7 is a schematic diagram of the flow of the cooling liquid inside the deionizer in the embodiment of the present invention;

fig. 8 is a second explosion diagram of the inner core assembly and the inner core venturi tube according to the embodiment of the present invention.

Reference numerals:

100. an upper end cover of the assembly; 200. an assembly housing; 300. a mounting cavity; 400. an inner core assembly; 500. a second seal ring;

101. a liquid inlet; 201. a liquid outlet;

1. a base; 2. a first filter mounting bracket; 3. a second filter mount; 4. an inner core venturi; 5. reinforcing ribs; 6. installing a pipe; 7. a first seal ring;

11. a liquid discharge port;

21. a first flow guide hole; 22. a first hollow structure; 23. an upper end cover of the first inner core; 24. a first core shell; 25. a third filter screen; 26. a fourth filter screen;

31. a second flow guide hole; 32. a second hollow structure; 33. a third hollow structure; 34. an upper end cover of the second inner core; 35. a second core shell; 36. a first filter screen; 37. a second filter screen;

41. a venturi body; 42. a first flow passage; 43. a flow guide pipe; 44. a second flow passage; 45. and (5) reinforcing ribs.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

The application of new energy technology to the whole vehicle is more and more diversified, wherein the rapid development and application of the hydrogen fuel cell technology opens up a new way and direction for the new energy technology.

The traditional deionizer has a single flow direction of an inner core, and mainly adopts an inner-outer straight-through type or an upper-lower straight-through type. The flow resistance of the internal and external straight-through structure is small, but due to the structural design limitation, the built-in resin is less, and the exchange capacity is low. The upper and lower straight-through structure is provided with more built-in resin and has larger exchange capacity, but the flow resistance is larger because the resin is too concentrated.

In order to make the deionizer have both larger exchange capacity and smaller flow resistance, the present embodiment provides a deionizer, and the details of the present embodiment are described in detail below with reference to fig. 1 to 8.

As shown in fig. 1 to 7, the deionizer includes an assembly upper end cap 100, an assembly housing 200, an inner core assembly 400, and an inner core venturi 4. Wherein, the assembly upper end cover 100 is provided with a liquid inlet 101. The assembly upper end cover 100 is connected with the assembly shell 200 through four bolts, the assembly upper end cover 100 is arranged on the assembly shell 200 in a sealing and buckling mode, an installation cavity 300 is formed between the assembly upper end cover 100 and the assembly shell 200, the liquid inlet 101 is communicated with the installation cavity 300, the assembly upper end cover 100 is provided with the liquid inlet 101, and the bottom of the assembly shell 200 is provided with the liquid outlet 201. Inner core assembly 400 sets up in installation cavity 300, inner core assembly 400 filters mounting bracket 3 including base 1 that has leakage fluid dram 11 and the first filtration mounting bracket 2 and the second that lie in base 1 with one side, leakage fluid dram 11 and liquid outlet 201 intercommunication, first filtration mounting bracket 2 sets up in leakage fluid dram 11 department, second filtration mounting bracket 3 sets up in base 1's outward flange department, and first filtration mounting bracket 2 is located the inside that second filtered mounting bracket 3, it has the resin to fill between first filtration mounting bracket 2 and the second filtration mounting bracket 3, first water conservancy diversion hole 21 has been seted up at the top of first filtration mounting bracket 2, the lateral wall circumference of first filtration mounting bracket 2 is provided with a plurality of first hollow out construction 22. The inner core venturi tube 4 is installed in the first filtering installation frame 2, the inner core venturi tube 4 includes a venturi main body 41 and a guide pipe 43 provided with a first flow channel 42 therein, the guide pipe 43 and the venturi main body 41 are arranged up and down, a large opening end at the bottom of the venturi main body 41 is communicated with the liquid discharge port 11, one end of the guide pipe 43 is communicated with the first flow guide hole 21, the other end of the guide pipe 43 is extended and arranged in the venturi main body 41, and a second flow channel 44 is formed between the outer wall surface of the guide pipe 43 and the inner wall surface of the venturi main body 41.

In short, the utility model provides a deionizer, install inner core assembly 400 in the installation cavity 300 by the formation between assembly upper end cover 100 and the assembly casing 200, inner core venturi 4 sets up in inner core assembly 400, first filter mounting bracket 2 and second filter mounting bracket 3 install in the same one side of base 1, and fill the resin between first filter mounting bracket 2 and the second filter mounting bracket 3, after the coolant liquid flows into deionizer, the coolant liquid filters the back through the second through mounting bracket 3 after the resin, because first water conservancy diversion hole 21 and first hollow out construction 22's setting, divide into the interior through flow fluid of outer to interior by the flow and the upper and lower through flow fluid of from top to bottom flow, interior and exterior through flow passes through venturi main body 41 through second runner 44 and produces the venturi effect and forms the high velocity of flow, because interior and exterior through flow fluid of upper and lower through flow passes through flow guide pipe 43 in the drainage to venturi main body 41, the interior and exterior through flow of high velocity of flow drives the upper and lower through flow fast flow of interior and lower through flow, thereby the velocity of upper and lower through flow resistance of the flow in first runner 42 has been accelerated to take into consideration, make exchange the flow capacity more big and the use efficiency of the product, the use of the product.

Further, as shown in fig. 4 to 6, a plurality of ribs 45 are connected between the outer wall surface of the flow conduit 43 and the inner wall surface of the venturi main body 41. By additionally arranging the reinforcing rib 45 between the guide pipe 43 and the venturi main body 41, the position of the guide pipe 43 relative to the venturi main body 41 is convenient to fix, and the guide pipe 43 is prevented from shaking relative to the venturi main body 41 to interfere with the flow of fluid.

Specifically, in this embodiment, the reinforcing ribs 45 are provided in plurality, and the plurality of reinforcing ribs 45 are radially distributed along the radial direction of the flow guide pipe 43, so as to further improve the overall structural strength of the inner core venturi tube 4.

Further, as shown in fig. 3, a second diversion hole 31 is formed in the top of the second filter mounting frame 3, and a plurality of second hollow structures 32 are circumferentially arranged on the side wall of the second filter mounting frame 3. Through set up second water conservancy diversion hole 31 and a plurality of second hollow out construction 32 on second filters mounting bracket 3, can shunt the coolant liquid in advance before the flow through resin, be divided into upper and lower through type fluid and inside and outside through type fluid, the fluid carries out the secondary and shunts when first filters mounting bracket 2, avoids taking place to block up, guarantees that the fluid smoothly flows.

Further, as shown in fig. 3, a plurality of third hollow structures 33 are disposed at the top of the second filter mounting frame 3, and the plurality of third hollow structures 33 are radially distributed outward along the radial direction of the second diversion holes 31. Through add a plurality of third hollow out construction 33 along the radial outward radiation distribution of second water conservancy diversion hole 31, be convenient for fully shunt the coolant liquid that is located the installation cavity 300 top, make liquid evenly filter the top of mounting bracket 3 through the second, avoid taking place to block up.

Further, as shown in fig. 8, the second filter mounting frame 3 includes a second inner core upper end cover 34 and a second inner core shell 35 that are detachably connected, the second inner core shell 35 and the base 1 are an integrated structure, the second inner core upper end cover 34 is provided with a second diversion hole 31 and a plurality of third hollow structures 33, and the second inner core shell 35 is provided with a plurality of second hollow structures 32. By providing the second core upper end cap 34 and the second core shell 35 in a detachable connection, on the one hand, rapid filling of resin during the assembly phase is facilitated; on the other hand, when the resin needs to be replaced, the replacement of the resin can be completed only by disassembling the second inner core upper end cover 34, so that the scrapping of the whole inner core assembly 400 is avoided, and the use cost is reduced.

Further, as shown in fig. 8, the second core upper end cover 34 is covered with a first filter 36, and the second core housing 35 is circumferentially covered with a second filter 37. By arranging the first filter screen 36 and the second filter screen 37, on one hand, the function of preliminary filtration is achieved; on the other hand, the restriction effect on the resin particles is achieved, and the problem that the resin particles leak due to the fact that the aperture of the second flow guide hole 31 and the aperture of the second hollow structure 32 are larger than that of the resin particles is avoided. Illustratively, the mesh sizes of the first filter 36 and the second filter 37 are 50-150 mesh.

Further, as shown in fig. 8, the first filter mounting frame 2 includes a first inner core upper end cover 23 and a first inner core shell 24, the first inner core upper end cover 23, the first inner core shell 24, the base 1 and the second inner core shell 35 are of an integrated structure, the first inner core upper end cover 23 is provided with a first diversion hole 21, and the first inner core shell 24 is provided with a plurality of first hollow structures 22. By designing the first inner core upper end cover 23, the first inner core shell 24, the base 1 and the second inner core shell 35 as an integrated structure, the structural strength of the whole inner core assembly 400 is improved, and filling of resin is facilitated.

Further, as shown in fig. 8, a third filter screen 25 is covered at the first diversion hole 21, and a fourth filter screen 26 is circumferentially covered on the first core shell 24. On one hand, the filter plays a role in primary filtration; on the other hand, the restriction effect on the resin particles is achieved, and the leakage of the resin particles caused by the fact that the aperture of the first flow guide hole 21 and the aperture of the first hollow structure 22 are larger than that of the resin particles is avoided. Illustratively, third filter 25 and fourth filter 26 have mesh sizes of 50-150 mesh.

Further, as shown in fig. 7, an installation pipe 6 is disposed at one end of the base 1 away from the first filter installation frame 2, an inner diameter of the installation pipe 6 is larger than an inner diameter of the liquid discharge port 11, and a first sealing ring 7 is disposed between the installation pipe 6 and the bottom of the assembly housing 200. Specifically, the mounting groove is circumferentially arranged on the outer wall surface of the mounting tube 6, so that the first sealing ring 7 is convenient to assemble, and the first sealing ring 7 is clamped between the mounting tube 6 and the assembly shell 200, so that the stability of the mounting position of the inner core assembly 400 is ensured on one hand; on the other hand, the sealing performance between the installation pipe 6 and the assembly shell 200 is ensured, the fluid is prevented from leaking between the installation pipe 6 and the assembly shell 200, and the cooling liquid is fully filtered by the resin.

Furthermore, as shown in fig. 7, a second sealing ring 500 is disposed at a joint of the assembly upper end cover 100 and the top of the assembly housing 200, so as to ensure the assembly sealing property between the assembly upper end cover 100 and the assembly housing 200 and avoid leakage of the cooling liquid.

It should be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A deionizer, comprising:

the assembly upper end cover (100) is provided with a liquid inlet (101);

the assembly device comprises an assembly shell (200), wherein an assembly upper end cover (100) is arranged on the assembly shell (200) in a sealing and buckling mode, an installation cavity (300) is formed between the assembly upper end cover (100) and the assembly shell (200), a liquid inlet (101) is communicated with the installation cavity (300), and a liquid outlet (201) is formed in the bottom of the assembly shell (200);

the inner core assembly (400) is arranged in the installation cavity (300), the inner core assembly (400) comprises a base (1) with a liquid outlet (11), and a first filtering mounting frame (2) and a second filtering mounting frame (3) which are positioned on the same side of the base (1), the liquid outlet (11) is communicated with the liquid outlet (201), the first filtering mounting frame (2) is arranged at the position of the liquid outlet (11), the second filtering mounting frame (3) is arranged at the outer edge of the base (1), the first filtering mounting frame (2) is positioned inside the second filtering mounting frame (3), resin is filled between the first filtering mounting frame (2) and the second filtering mounting frame (3), a first flow guide hole (21) is formed in the top of the first filtering mounting frame (2), and a plurality of first hollowed-out structures (22) are circumferentially arranged on the side wall of the first filtering mounting frame (2);

inner core venturi (4), install in first filtration mounting bracket (2), inner core venturi (4) include venturi main part (41) and be provided with honeycomb duct (43) of first runner (42) in, the macrostoma end of venturi main part (41) with leakage fluid dram (11) intercommunication, the one end of honeycomb duct (43) with first water conservancy diversion hole (21) intercommunication, the other end extension of honeycomb duct (43) set up in venturi main part (41), the outer wall of honeycomb duct (43) with form second runner (44) between the internal face of venturi main part (41).

2. The deionizer as claimed in claim 1, wherein a plurality of reinforcing ribs (45) are connected between the outer wall surface of the flow guide tube (43) and the inner wall surface of the venturi main body (41).

3. The deionizer according to claim 1, wherein a second diversion hole (31) is opened at the top of the second filter mounting frame (3), and a plurality of second hollow structures (32) are circumferentially arranged on the side wall of the second filter mounting frame (3).

4. The deionizer according to claim 3, wherein the top of said second filter mount (3) is provided with a plurality of third hollows (33), said plurality of third hollows (33) being radially distributed radially outward of said second baffle holes (31).

5. The deionizer according to claim 4, wherein the second filter mounting frame (3) comprises a second inner core upper end cover (34) and a second inner core shell (35) which are detachably connected, the second inner core shell (35) and the base (1) are of an integrated structure, the second inner core upper end cover (34) is provided with the second diversion holes (31) and the third hollow structures (33), and the second inner core shell (35) is provided with the second hollow structures (32).

6. The deionizer according to claim 5, wherein said second core upper end cap (34) is shrouded with a first filter (36) and said second core housing (35) is circumferentially shrouded with a second filter (37).

7. The deionizer according to claim 5, wherein said first filter mount (2) comprises a first core upper end cap (23) and a first core housing (24), said first core upper end cap (23), said first core housing (24), said base (1) and said second core housing (35) being of an integral structure, said first core upper end cap (23) being provided with said first baffle hole (21), said first core housing (24) being provided with a plurality of said first cutouts (22).

8. The deionizer according to claim 7, wherein said first baffle hole (21) is covered with a third filter (25), and said first core housing (24) is circumferentially covered with a fourth filter (26).

9. The deionizer according to any of claims 1 to 8, wherein a mounting tube (6) is disposed at one end of the base (1) away from the first filter mounting frame (2), the inner diameter of the mounting tube (6) is larger than that of the drain port (11), and a first sealing ring (7) is disposed between the mounting tube (6) and the bottom of the assembly housing (200).

10. The deionizer according to any of claims 1 to 8, wherein a second sealing ring (500) is provided at the junction of said assembly upper end cap (100) and the top of said assembly housing (200).