CN212141701U - Water filtering device and water heater using same - Google Patents

Abstract

The utility model discloses a water filtering device and a water heater using the same, wherein the water filtering device is applied to the water heater and comprises an outer shell and a filter element assembly, the outer shell is provided with an intermediate baffle, the water filtering device further comprises a first interface connecting piece, and the filter element assembly penetrates through the intermediate baffle and is arranged inside the outer shell by being connected with the first interface connecting piece; the outer shell is arranged in the water heater through the first interface connecting piece. After adopting above-mentioned technical scheme, this water filtering device's simple structure, and filter element group spare through first interface connection spare and shell body cooperation, realize quick installation and dismantlement, the customer of being convenient for after pulling down clears up inside the filter element group spare.

Description

A water filter device and a water heater using the same

technical field

The utility model relates to the field of filtering devices, in particular to a water filtering device and a water heater using the same.

Background technique

As shown in Figure 1, the water heaters on the market currently use a simple filter device to protect the built-in water flow detection device B of the water heater A from being stuck. Impurities, can not effectively isolate the tiny particles and eggs and other harmful substances in tap water. After the water heater has been used for a long time, the small filter is very easy to block, which greatly reduces the flow of tap water and affects the normal use of the water heater. In addition, the filter is fixed inside the water inlet joint, which is very inconvenient to assemble, disassemble and clean.

For this reason, some users install a pre-precision filter on the water inlet end of the water heater A, which can further improve the water quality, increase the water flow, and facilitate daily maintenance. However, the pre-filter is expensive and requires a water pipe to be connected outside the machine.

Utility model content

The main purpose of the utility model is to provide a water filtering device, which can overcome the above defects. The water filtering device is installed inside the water heater, and has a simple structure and is easy to assemble and disassemble.

In order to achieve the above purpose, the technical solution adopted by the present invention is: a water filtering device, which includes an outer casing and a filter element assembly, the outer casing is provided with a middle partition plate, and the water filtering device further comprises: a first interface connecting piece, the filter element assembly penetrates the middle partition plate and is arranged inside the outer casing by being connected with the first interface connecting piece; the outer casing passes through the first interface connecting piece The interface connector is installed inside the water heater.

In the above technical solution, the filter element assembly includes a filter element shell and a filter screen, the filter element shell is provided with a filter screen frame, and the filter screen is arranged on the filter screen frame.

In the above technical solution, the filter element assembly includes a filter element shell, a filter screen and an upper end cover, the filter element shell is provided with a filter screen frame, and the upper end cover and the filter screen frame are connected by snaps or threads .

In the above technical solution, the filter element assembly includes a filter element shell, a filter screen and a lower end cover, the filter element shell is provided with a filter screen frame, and the lower end cover and the filter screen frame are connected by snaps or threads .

In the above technical solution, the mesh number of the filter screen is greater than 60 meshes.

In the above technical solution, the lower end surface of the filter element shell is provided with a handle or an annular tooth cap.

In the above technical solution, the lower end cover is provided with a flat handle or an annular tooth cap.

In the above technical solution, it further includes a metal filter element assembly, the metal filter element assembly penetrates the intermediate partition plate and is arranged inside the outer casing by being connected with the first interface connector.

In the above technical solution, the metal filter element assembly comprises a filter element straight pipe, an annular end cover, a circular filter screen and a pressure plate, and the annular end cover is provided at both ends of the filter element straight pipe. The annular end cover is provided with a circular filter screen, and the pressing plate presses the circular filter screen and covers the annular end cover.

In the above technical solution, the inside of the metal filter element assembly is filled with water purification particles.

In the above technical solution, the metal filter element assembly further includes a lower end cover, and the lower end cover is covered on the bottom of the filter element straight pipe and is installed in cooperation with the first interface connector.

In the above technical solution, the lower end surface of the lower end cover is provided with a handle or an annular tooth cap.

A water heater includes the above-mentioned water filtering device.

After adopting the above technical solution, the structure of the water filtering device is simple, and the filter element assembly cooperates with the outer casing through the first interface connector to realize quick installation and disassembly, and it is convenient for customers to clean the inside of the filter element assembly after disassembly.

Description of drawings

Fig. 1 is the schematic diagram that the water inlet end of the conventional water heater is provided with a small filter screen;

2 is a cross-sectional view of the internal structure of the first embodiment of the present invention;

3 is a cross-sectional view of the outer casing structure of the first embodiment of the present invention;

4 is an exploded schematic view of the outer casing of the first embodiment of the present invention;

5 is a cross-sectional view of the structure of the filter element assembly according to the first embodiment of the present invention;

6 is a schematic diagram of the filter element assembly of the second embodiment of the present invention with an upper end cover;

7 is a schematic diagram of the filter element assembly of the third embodiment of the present invention with a lower end cover;

8 is a schematic diagram of the filter element assembly filled with water purification particles according to the fourth embodiment of the present invention;

9 is a cross-sectional view of the internal structure of the fifth embodiment of the present invention;

10 is a sectional view of the structure of the fifth embodiment of the present invention using a metal filter element assembly;

11 is a structural cross-sectional view one of the metal filter element assembly according to the fifth embodiment of the present invention;

FIG. 12 is a second structural cross-sectional view of the metal filter element assembly according to the fifth embodiment of the present invention;

Fig. 13 is a structural exploded schematic diagram of a metal filter element assembly according to the fifth embodiment of the present invention;

Fig. 14 is a schematic diagram of the filter device according to the first embodiment of the present invention being installed at the water inlet end of the water heater;

Fig. 15 is a schematic diagram of the filter device according to the first embodiment of the present invention being installed at the water outlet end of the water heater;

Figure 16 is a schematic diagram of the filter device according to the first embodiment of the present invention being installed at the water inlet and outlet ends of the water heater respectively;

Figure 17 is a schematic diagram of the fifth embodiment of the present utility model, where the filter device is installed at the water inlet end of the water heater;

Figure 18 is a schematic diagram of the fifth embodiment of the present utility model, where the filter device is installed at the water outlet end of the water heater;

Figure 19 is a schematic diagram of the fifth embodiment of the present utility model, where the filter device is installed at the water inlet end and the water outlet end of the water heater;

Figure 20 is a partial enlarged schematic diagram of D of the present invention.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

Example 1:

As shown with reference to FIG. 2 , the present utility model discloses a water filtering device, which is applied to a water heater, comprising an outer casing 1 and a filter element assembly 2 , wherein:

As shown in FIGS. 3, 4, and 20, the outer casing 1 is a cylindrical hollow casing composed of an upper casing 11, a lower casing 12 and a middle partition plate 13; wherein the upper casing 11 and the lower casing 12 are integrally drawn by metal plates Extend into a hollow bowl.

As shown in FIGS. 3 and 4 , an outer flange 111 is provided on the open surface of the bottom of the upper shell 11, and a flanged outer flange 121 is provided on the open surface of the top of the lower shell 12; the middle partition plate 13 is a circular metal plate with an outer diameter of The outer flanges 111 of the upper shell 11 are the same, and a flanging hole 131 is provided in the center of the middle partition plate 13, and the flanging flange 121 faces upward. After the outer flange 121 of the top flanging of the lower shell 12 is attached to the middle partition plate 13, it is then attached to the bottom outer flange 121 of the upper shell 11, and the intermediate partition plate 13 divides the inner cavity of the outer casing 1 into two parts.

The side surface of the upper shell 11 is provided with a second interface connector 15 , and the sealing surface at the top of the upper shell 11 is provided with a limiting pressure shape 112 . A third interface connector 16 is arranged on the side of the lower shell 12 , a first interface connector 14 is arranged at the bottom of the lower shell 12 , an outer flange 143 is arranged on the first interface connector 14 of the outer casing 1 , and a threaded hole 144 is arranged on the outer flange 143 , the inner hole 141 of the first interface connector 14 is provided with an internal thread 142; the upper shell 11, the lower shell 12, the middle partition 13, the first interface connector 14, the third interface connector 16 and the second interface of the outer casing 1 The connecting piece 15 is preferably made of stainless steel, and is connected and formed by brazing process, so as to meet the pressure resistance and corrosion resistance; The flanged holes 131 are located on the same axis, and the third interface connector 16 of the lower shell 12 and the second interface connector 15 of the upper shell 11 can be designed to be on the same side or different sides to meet the waterway installation of different models.

2 and 5, the filter element assembly 2 includes a filter element housing 21, a filter screen 22, a first sealing ring a and a second sealing ring b, the filter screen 22 is arranged in a tubular shape, and the filter element assembly 2 consists of the filter element housing 21 and the filter screen. 22, the filter element shell 21 is a cylindrical hollow shell, the top and bottom sides of the filter element shell 21 are respectively provided with regularly arranged filter screen frames 211, and the filter screen 22 is close to the corresponding filter screen frame 211; An annular step 214 is provided, and the bottom of the filter element housing 21 is closed and provided with an external thread 213 . The filter element assembly 2 is embedded inside the outer casing 1 .

The annular step 214 at the top of the filter element housing 21 is positioned in cooperation with the limiting pressure shape 112 of the upper shell 11, and the middle outer wall of the filter element housing 21 is provided with a first sealing ring mounting groove 212 for installing the annular first sealing ring a; 21 The bottom outer wall is provided with a second sealing ring installation groove 215 to install the annular second sealing ring b. The filter element shell 21 is matched with the flange hole 131 of the middle partition plate 13 and is provided with an annular first sealing ring a. , the filter element shell 21 is matched with the inner hole 141 of the first interface connector 14 of the lower shell 12 and is provided with an annular second sealing ring b. Threads 142 are mating connections. The tap water flows from the third interface connector 16 of the outer casing 1 into the lower cavity of the detachable water filter device of the present invention, passes through the first layer of filter screen 22 at the bottom of the filter element assembly 2, and then flows to the inner cavity at the top of the filter element assembly 2, and then flows to the inner cavity of the top of the filter element assembly 2. Passing through the second layer of filter screen 22 at the top of the filter element assembly 2 , the tap water flows out from the second interface connector 15 of the outer casing 1 after being double filtered. The filter element shell 21 is injection-molded from plastic, and the tubular filter screen 22 and the filter screen frame 211 are injection-molded into one.

As shown with reference to FIGS. 6 and 7 , the bottom of the filter element housing 21 is provided with a flat handle 216 or an annular tooth cap 217 to facilitate the tightening and disassembly of the filter element assembly 2 .

As shown with reference to Figures 14, 15 and 16, when using and assembling, the third interface connector 16 is connected to the external water pipe, the second interface connector 15 is connected to the water pipe inside the water heater, and the third interface connector 16 is used as a water inlet, The second port connector 15 is used as the water outlet, the first port connector 14 is welded with the outer shell 1, the outer flange 143 of the first port connector 14 is fixed on the water heater by bolts, and the outer shell on the first port connector 14 Body 1 is located inside the water heater. The filter element assembly 2 is installed inside the outer casing 1 through the outer thread 213 of the filter element casing 21 and the inner thread 142 of the first interface connector 14 in cooperation.

When the tap water flows into the outer casing 1 from the third interface connector 16, the impurities in the tap water are filtered through the filter screen 22 on the filter element assembly 2, and the filtered tap water flows into the water heater through the second interface connector 15. The capacity of the inner cavity of the outer casing 1 is relatively large, and the mesh number of the filter screen 22 is greater than 60 meshes, which can realize large-capacity filtration and filter more cleanly. The installation method of the filter element assembly 2 and the outer casing 1 through threads is convenient for both installation and disassembly. The filter has low cost and is suitable for domestic hot water gas instant water heaters and dual-purpose furnaces.

Embodiment 2:

As shown with reference to FIGS. 2 and 6 , the top surface of the filter element housing 21 is designed as a detachable upper end cover 23 , and the upper end cover 23 and the top of the filter element housing 21 are connected by snap connection or screw connection. The filter element shell 21 is made into a detachable type, which is convenient for cleaning the inside of the filter element shell 21 and the filter screen 22 .

Embodiment three:

As shown in FIGS. 2 and 7 , the bottom surface of the filter element housing 21 is designed as a detachable lower end cover 24 , and an external thread 213 and a second sealing ring mounting groove 215 are provided on the outer wall of the lower end cover 24 . The lower end cover 24 and the filter element housing 21 Bottom with snap connection or screw connection. The filter element shell 21 is made into a detachable type, which is convenient for cleaning the inside of the filter element shell 21 and the filter screen 22.

Embodiment 4:

As shown with reference to FIG. 8 , the inner cavity of the filter element assembly 2 is filled with water purification particles 25 for filtering water quality. The water purifying particles 25 can be activated carbon (absorbing chlorine and deodorizing), water softening resin (reducing hardness), KDF copper-zinc alloy (removing heavy metals), scale inhibitor (reducing scale), tourmaline (releasing trace elements), etc. It can also be a composite material to achieve better filtration effect and meet the different water needs of users.

Embodiment 5:

As shown with reference to FIGS. 9 and 20, the present utility model discloses another water filtering device, which is applied to a water heater, and includes an outer casing 1 and a metal filter element assembly 5, wherein:

As shown in FIGS. 2, 3, 9, 10, 11, 13, and 20, the detachable water filtering device of the present invention uses a metal filter element assembly 5, and the metal filter element assembly 5 is formed by splicing metal plates (preferably stainless steel plates), The metal filter element assembly 5 includes a filter element straight pipe 51 , an annular end cover 52 , a circular filter screen 53 and a pressing plate 54 . The filter element straight pipe 51 is a circular straight pipe with open ends at both ends. The two ends of the filter element straight pipe 51 are provided with through holes 511 and a limit ring 513 that are regularly arranged around the circumference. A third sealing ring installation groove is arranged in the middle of the filter element straight pipe 51 512, for installing the annular first sealing ring a. The annular end cover 52 and the pressing plate 54 are both punched into circular thin plates from metal plates, and water passage holes 521 are arranged in the middle; The outer diameter of the circular filter screen 53 is equivalent to that of the annular end cover 52, and the mesh number should preferably be more than 60 meshes to achieve better filtering effect. The circular filter screen 53 is placed between the annular end cover 52 and the pressing plate 54, and then the three are welded together. An annular end cover 52 containing a filter screen is embedded at both ends of the filter element straight pipe 51, and is positioned by the limit ring 513 to form a filter element cavity; the flanging ring 522 of the annular end cover 52 is in close contact with the inner wall of the filter element straight pipe 51 and welded together.

As shown in FIG. 9 , the metal filter element assembly 5 is embedded inside the outer casing 1 , the inner wall of the upper end face of the filter element straight pipe 51 is positioned in cooperation with the limiting pressure shape 112 of the upper shell 11 , the filter element straight pipe 51 and the middle partition plate 13 are turned over. The side hole 131 is matched and connected and an annular first sealing ring a is arranged in the third sealing ring installation groove 512 of the filter element straight pipe 51 , and the split lower end cover 24 is connected to the first interface connector 14 of the outer casing 1 . The inside of the metal filter element assembly 5 is filled with water purification particles 25 of different types for filtering water quality, which can achieve different water inflow effects and meet the customized needs of users. The tap water flows from the third interface connector 16 of the outer casing 1 into the lower cavity of the detachable water filter device of the present invention, passes through the through holes 511 at the bottom of the straight pipe 51 of the filter element and the first layer of circular filter screen 53 and then flows into all the The inner cavity of the metal filter element assembly 5, after being filtered by the water purification particles 25, flows out from the second layer of the circular filter screen 53 and the through hole 511 at the top of the filter element straight pipe 51, and finally flows out from the second interface connector 15 of the outer casing 1. outflow to complete the deep filtration and water purification process.

As shown with reference to FIGS. 11 and 12 , the bottom of the lower end cover 24 is provided with a flat handle 216 or an annular tooth cap 217 to facilitate the tightening and disassembly of the filter element assembly 2 .

Embodiment 6:

14 , 15 , 16 , 17 , 18 , and 19 , the present invention creates a detachable water filtering device installed in the water inlet pipeline of the main water circuit inside the water heater body, and the third interface connector 16 of the outer casing 1 is connected to the water heater. The water inlet joint is connected, and the second interface connector 15 of the outer casing 1 is connected to the water heater water inlet pipe. The outer flange 143 of the first interface connector 14 of the outer casing 1 is screwed and fixed with the water heater casing.

Embodiment 7:

14 , 15 , 16 , 17 , 18 and 19 , the detachable water filtering device of the present invention is installed in the water outlet pipeline of the main water circuit inside the water heater body, and the third interface connector 16 of the outer casing 1 is connected to the water outlet of the water heater. The joint is connected, and the second interface connector 15 of the outer casing 1 is connected with the water outlet pipe of the water heater.

Embodiment 8:

14 , 15 , 16 , 17 , 18 and 19 , the detachable water filtering device created by the present invention is respectively installed on the water inlet pipeline and the water outlet pipeline of the main water circuit inside the water heater body to realize two-stage filtration and further improve the cleanliness. water effect.

Embodiment 9:

A water heater, comprising the above water filtering device.

The above embodiments are only intended to illustrate rather than limit the present invention, so all equivalent changes or modifications made according to the methods described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims (14)

1. The water filtering device is applied to a water heater and is characterized by comprising an outer shell (1) and a filter element assembly (2), wherein the outer shell (1) is provided with an intermediate partition plate (13), the water filtering device further comprises a first interface connecting piece (14), and the filter element assembly (2) penetrates through the intermediate partition plate (13) and is arranged inside the outer shell (1) through being connected with the first interface connecting piece (14); the outer shell (1) is arranged in the water heater through the first interface connecting piece (14).

2. A water filtering device according to claim 1, wherein the cartridge assembly (2) comprises a cartridge housing (21) and a screen (22), the cartridge housing (21) being provided with a screen frame (211), the screen (22) being provided on the screen frame (211).

3. A water filtering device according to claim 1, wherein the filter element assembly (2) comprises a filter element housing (21), a filter screen (22) and an upper end cover (23), the filter element housing (21) is provided with a filter screen frame (211), and the upper end cover (23) is connected with the filter screen frame (211) by adopting a snap fit or a screw thread.

4. A water filtering device according to claim 1, wherein the filter element assembly (2) comprises a filter element housing (21), a filter screen (22) and a lower end cap (24), the filter element housing (21) is provided with a filter screen frame (211), and the lower end cap (24) is connected with the filter screen frame (211) by a snap fit or a screw thread.

5. A water filtering device according to any one of the claims 2-4, characterized in that the cartridge housing (21) is filled with water purification particles (25).

6. A water filtering device according to any one of claims 2-4, characterized in that the mesh size of the screen (22) is larger than 60 mesh.

7. A water filtering device as claimed in claim 2 or 3, characterized in that the lower end surface of the filter element housing (21) is provided with a straight handle (216) or an annular dental cap (217).

8. Water filtering device according to claim 4, wherein said lower end cap (24) is provided with a straight handle (216) or an annular dental cap (217).

9. A water filtering device according to claim 1, characterized in that it further comprises a metallic filter element assembly (5), said metallic filter element assembly (5) extending through said intermediate wall (13) and being arranged inside said outer casing (1) by being connected to said first interface connection (14).

10. The water filtering device according to claim 9, wherein the metal filter element assembly (5) comprises a filter element straight pipe (51), an annular end cover (52), a circular filter screen (53) and a pressing plate (54), the annular end cover (52) is arranged at two ends of the filter element straight pipe (51), the circular filter screen (53) is arranged in the annular end cover (52), and the pressing plate (54) presses the circular filter screen (53) and is arranged in the annular end cover (52) in a covering manner.

11. A water filtering device according to claim 10, characterized in that the metal filter element assembly (5) is internally filled with water purification particles (25).

12. The water filtering device as claimed in claim 11, wherein the metal filter element assembly (5) further comprises a lower end cap (24), and the lower end cap (24) is arranged at the bottom of the straight filter element tube (51) and is matched with the first connector (14).

13. Water filtering device according to claim 12, wherein the lower end surface of the lower end cover (24) is provided with a straight handle (216) or an annular dental cap (217).

14. A water heater including a water filtering device as claimed in any one of claims 1 to 12.

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