CN205164239U - A water heater that is used for leading filter of water heater and has it - Google Patents

Abstract

The utility model discloses a pre-filter used for a water heater and a water heater with the same. The pre-filter used for a water heater includes: a shell, the shell includes a first shell and a second shell, the The first housing and the second housing are detachably installed and jointly define a filter chamber, the filter chamber has a water inlet and a water outlet; a filter assembly, the filter assembly is arranged in the filter chamber and is located in the filter chamber between the water inlet and the water outlet. According to the pre-filter for water heaters of the present invention, the filter cavity is defined by the detachable first shell and the second shell, and the filter screen assembly is arranged in the filter cavity, so that it has small volume and low cost , Easy to disassemble and clean, good cleaning effect and so on.

Description

Pre-filter for water heater and water heater having same

technical field

The utility model relates to the technical field of water heaters, in particular to a pre-filter for a water heater and a water heater with the pre-filter.

Background technique

Tap water contains sediment, rust, colloid and other impurities, which are easy to deposit scale in the inner tank of the water heater, making the quality of the effluent water worse and affecting the health of users. For this reason, in the related art, the whole house filter is used to filter water, but the whole house filter has a large volume, high cost, and adopts an automatic cleaning method, resulting in incomplete cleaning.

Utility model content

The utility model aims to solve one of the above-mentioned technical problems in the related art at least to a certain extent. For this reason, the utility model proposes a pre-filter used for water heaters. The filter has the advantages of detachable cleaning, good cleaning effect, small volume and low cost.

In addition, the utility model also discloses a pre-filter for a water heater.

The pre-filter for a water heater according to an embodiment of the present invention includes: a casing, the casing includes a first casing and a second casing, and the first casing and the second casing are detachably installed and together A filter chamber is defined, and the filter chamber has a water inlet and a water outlet; a filter screen assembly is arranged in the filter chamber and is located between the water inlet and the water outlet.

According to the pre-filter for water heaters in the embodiment of the present invention, the filter cavity is defined by the detachable first shell and the second shell, and the filter screen assembly is arranged in the filter cavity, so that it has small size, Advantages such as low cost and easy disassembly and cleaning.

According to some embodiments of the present utility model, the filter screen assembly includes: a bracket, the bracket is positioned in the filter chamber; a filter screen, the filter screen is arranged on the bracket and located at the water inlet and between the outlets.

Optionally, the support includes: an inner support frame; an end support frame, the end support frame is connected to the inner support frame, and the filter screen is arranged on the inner support frame and connected to the end portion The support frame is connected, and the end support frame is located between the filter screen and the water outlet and seals the gap between the filter screen and the side wall of the filter chamber.

Further, a first sealing ring is further provided between the end support frame and the side wall of the filter cavity.

Further, the filter screen includes: a cylindrical filter part, the cylindrical filter part is sleeved on the inner support frame and connected to the end support frame; an end filter part, the end filter part It is provided at one end of the cylindrical filter part adjacent to the water inlet.

Optionally, the end support frame is a ring frame.

Optionally, the filter screen assembly further includes: at least two anti-resistance balls, and the anti-resistance balls are arranged between the end filter part and the inner wall of the filter chamber so that the end filter part and the inner wall of the filter cavity The connecting portion of the cylindrical filter part is spaced apart from the inner wall of the filter cavity.

According to some embodiments of the present utility model, the filter cavity includes: a water inlet section, the water inlet section is adjacent to the water inlet; a water outlet section, the water outlet section is adjacent to the water outlet; a middle section, the middle section It is located between the water inlet section and the water outlet section, wherein the cross-sectional area of the water inlet section increases gradually from the water inlet to the middle section, and the cross-sectional area of the water outlet section increases from the gradually decrease from the middle section to the water outlet.

According to some embodiments of the present utility model, the first housing and the second housing are screwed together, and a second sealing ring is provided between the first housing and the second housing.

According to some embodiments of the present utility model, the first casing is located above the second casing, the water inlet is arranged on the second casing and the water outlet is arranged on the first casing superior.

Optionally, the first housing is provided with a water outlet joint communicating with the water outlet, and the second housing is provided with a water inlet joint communicating with the water inlet.

According to some embodiments of the present utility model, at least one of the first casing and the second casing is a transparent member.

In addition, the utility model also discloses a water heater, which includes the pre-filter for the water heater according to the above-mentioned embodiment of the utility model.

The water heater according to the embodiment of the utility model has the pre-filter for the water heater according to the above-mentioned embodiment of the utility model, so as to avoid the growth of internal bacteria, improve the quality of the effluent water, and ensure the health of the water.

Description of drawings

Fig. 1 is a schematic structural view of a pre-filter for a water heater according to an embodiment of the present invention;

Reference signs:

100: pre-filter;

1: shell; 101: filter cavity;

11: first housing; 12: second housing; 13: water inlet; 14: water outlet;

2: filter screen assembly;

21: bracket; 211: inner support frame; 212: end support frame;

22: filter screen; 221: cylindrical filter part; 222: end filter part;

31: the first sealing ring; 32: the second sealing ring;

4: stop the ball;

61: water inlet connector; 62: water outlet connector.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , so it cannot be interpreted as a limitation of the present utility model.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "below" a second feature may include direct contact between the first and second features, and may also include the first and second features being in direct contact with each other. The features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

A pre-filter 100 for a water heater according to an embodiment of the present invention will be described in detail below with reference to FIG. 1 . The pre-filter 100 according to the embodiment of the present utility model can be connected between the water inlet of the water heater and the water source, so as to filter the tap water entering the water heater.

As shown in FIG. 1 , a pre-filter 100 for a water heater according to an embodiment of the present utility model may include: a casing 1 and a screen assembly 2 , wherein the casing 1 may include a first casing 11 and a second casing 12 , the first housing 11 and the second housing 12 are detachably installed, and the first housing 11 and the second housing 12 can jointly define a filter cavity 101 , and the filter cavity 101 can have a water inlet 13 and a water outlet 14 .

The filter screen assembly 2 can be arranged in the filter cavity 101 and can be located between the water inlet 13 and the water outlet 14 . The water to be filtered can enter the filter cavity 101 from the water inlet 13 , and can be discharged from the water outlet 14 after being filtered by the filter screen assembly 2 .

Moreover, the size of the pre-filter 100 can be determined according to the water inflow of the water heater, so that the volume of the pre-filter 100 can be reduced, which is convenient for installation. At the same time, after the front filter 100 has been used for a period of time, the user can disassemble the first casing 11 and the second casing 12, and take out the filter screen assembly 2 for cleaning, so as to achieve repeated use, thereby reducing costs.

According to the pre-filter 100 for a water heater according to the embodiment of the present utility model, when the water to be filtered enters the filter chamber 101 from the water inlet 13, the filter screen assembly 2 can filter it to retain the sediment, sand, and Rust, colloid, red worms and other impurities can reduce the turbidity of tap water and reduce the probability of water heater scaling. Moreover, after using for a period of time, the user can disassemble the first casing 11 and the second casing 12, and remove the filter screen assembly 2 for self-cleaning. Compared with the automatic cleaning method in the prior art, the cleaning is more thorough. In addition, the pre-filter 100 has a simple structure and can be controlled in a small volume, thereby reducing the cost.

According to some embodiments of the present utility model, as shown in Figure 1, the filter screen assembly 2 may comprise: a bracket 21 and a filter screen 22, the bracket 21 may be positioned in the filter chamber 101, the filter screen 22 may be arranged on the bracket 21, And the filter screen 22 can be located between the water inlet 13 and the water outlet 14, the filter screen 22 can filter the water, and the filter screen 22 can be positioned in the filter cavity 101 by the bracket 21, so as to avoid the effect of the filter screen 22 on the water pressure Under deformation, to improve the stability and reliability of the filter screen 22. In addition, in the process of disassembling and cleaning the filter screen assembly 2, the filter screen assembly 2 is integrated as a whole, which is not only convenient for cleaning, but also the bracket 21 can ensure that the filter screen 22 is not easily deformed during the cleaning process.

As an optional implementation, as shown in FIG. 1 , the bracket 21 may include an inner support frame 211 and an end support frame 212 . Specifically, the end support frame 212 can be connected with the inner support frame 211, the filter screen 22 can be arranged on the inner support frame 211, and the filter screen 22 can be connected with the end support frame 212, and the end support frame 212 can be positioned on the filter screen. Between the net 22 and the water outlet 14 , and the end support frame 212 can seal the gap between the filter net 22 and the side wall of the filter cavity 101 . Thus, the end support frame 212 and the inner support frame 211 can jointly position the filter screen 22 in the filter cavity 101, and at the same time, the end support frame 212 can seal the gap between the filter screen 22 and the side wall of the filter cavity 101 , to prevent unfiltered water from flowing through the gap, thereby improving the filtering effect of the pre-filter 100 .

In order to improve the sealing effect of the end support frame 212, as shown in Figure 1, a first sealing ring 31 can be further provided between the end support frame 212 and the side wall of the filter chamber 101, so that the first sealing ring 31 can The gap between the end support frame 212 and the side wall of the filter cavity 101 is completely sealed, which further improves the filtering effect of the pre-filter 100 .

According to some embodiments of the present invention, the filter screen 22 may include: a cylindrical filter part 221 and an end filter part 222 . As shown in Figure 1, the cylindrical filter part 221 can be sleeved on the inner support frame 211, and the cylindrical filter part 221 can be connected with the end support frame 212, and the end filter part 222 can be arranged on the cylindrical filter part 221. One end (for example, the upper end) adjacent to the water inlet 13, like this, the end filter part 222 and the cylindrical filter part 221 can jointly filter the water entering the filter chamber 101 from the water inlet 13, which can not only increase the filtering capacity, but also can Improve the filtering effect, ensure that all the water entering by the water inlet 13 is filtered by the filter screen 22 and then flow out from the water outlet 14.

Optionally, the end support frame 212 can be a ring frame. On the one hand, the weight of the end support frame 212 can be reduced. On the other hand, the water filtered by the cylindrical filter part 221 and the end filter part 222 can be The center of the support frame 212 quickly flows to the water outlet 14, thereby increasing the filtering speed.

In some embodiments of the present utility model, as shown in FIG. 1 , the filter screen assembly 2 may also include at least two anti-arrest balls 4, and the anti-arrival balls 4 may be arranged between the end filter portion 222 and the inner wall of the filter chamber 101 and are opposite to each other in the radial direction of the filter screen assembly 2 , so that the junction of the end filter part 222 and the cylindrical filter part 221 is spaced from the inner wall of the filter cavity 101 . For example, in the example shown in FIG. 1 , there are a plurality of balls 4 that are equidistant along the circumference of the end filter portion 222 . Thus, a part of the water entering the filter chamber 101 from the water inlet 13 can be filtered by the end filter part 222, and another part can flow through the gap between the filter screen 22 and the inner wall of the filter chamber 101, and then be filtered by the cylindrical filter part 221. Therefore, not only the filtering effect but also the filtering efficiency can be improved.

According to some embodiments of the present utility model, the filter cavity 101 may include: a water inlet section, a water outlet section and a middle section. As shown in Figure 1, the water inlet section can be adjacent to the water inlet 13, the water outlet section can be adjacent to the water outlet 14, and the middle section can be arranged between the water inlet section and the water outlet section. Wherein, the cross-sectional area of the water inlet section can gradually increase from the water inlet 13 to the middle section, and the cross-sectional area of the water outlet section can gradually decrease from the middle section to the water outlet 14 . For example, in the example shown in FIG. 1 , the inner wall of the water inlet section can be inclined inwardly from top to bottom, and the inner wall of the water outlet section can be inclined outward from top to bottom. The inner wall of the water inlet section is set to incline from top to bottom, which can reduce the flow rate of water entering the filter chamber 101. The flow rate of water can accelerate the interception of impurities by the filter screen 22, so that the trapped impurities can be impulsive in the filter cavity 101 at any time, so as to prevent impurities from being stuck in the filter holes of the filter screen 22 and blocking the filter screen 22.

Optionally, the included angle between the inner wall of the water inlet section and its axis can be 15°-45°, and the included angle between the inner wall of the water outlet section and its axis can be 3°-15°. The ball 4 is positioned in the filter cavity 101, and the first sealing ring 31 can be conveniently installed to realize sealing.

As an optional embodiment, the filter screen 22 may have a pore size of 40 μm-200 μm, so as to improve the filtering effect of the filter screen 22 and retain impurities in tap water. Preferably, the pore size of the filter screen 22 may be 40 μm˜90 μm, so that the filtering effect of the pre-filter 100 is better.

Optionally, the filter screen 22 can be a stainless steel filter screen or a nylon filter screen. Since the stainless steel filter screen and the nylon filter screen have the advantages of high strength, good corrosion resistance, and repeated cleaning and use, the stainless steel filter screen or nylon filter screen is used Repeated cleaning and use can be realized, thereby reducing the replacement frequency of the filter screen 22 and further reducing costs.

According to some embodiments of the present utility model, as shown in Figure 1, the first shell 11 and the second shell 12 can be screwed together, specifically, as shown in Figure 1, the first shell 11 can be provided with an outer thread, the second housing 12 can be provided with an internal thread that matches the external thread, through the cooperation of the internal thread and the external thread, the first housing 11 and the second housing 12 can be detachably installed, not only the structure is simple and compact , and easy and reliable installation. In order to prevent the water in the filter chamber 101 from flowing out, a second sealing ring 32 may be provided between the first housing 11 and the second housing 12 .

In some embodiments of the present utility model, as shown in Figure 1, the first housing 11 can be located above the second housing 12, the water inlet 13 can be arranged on the second housing 12, and the water outlet 14 can be located on the on the first shell 11. Thus, the water to be filtered can enter the filter cavity 101 from the water inlet 13 on the second casing 12 , and flow out from the water outlet 14 on the first casing 11 after being filtered by the filter screen 22 .

Specifically, as shown in FIG. 1, the shell 1 made up of the first shell 11 and the second shell 12 can be generally ellipsoidal and the central axis is oriented along the vertical direction, and the water inlet 13 and the water outlet 14 are respectively located at Both ends of the casing 1 and the central axis of the water inlet 13 coincide with the central axis of the water outlet 14 .

As an optional embodiment, as shown in FIG. 1 , the first housing 11 may be provided with a water outlet joint 62 communicating with the water outlet 14 , and the second housing 12 may be provided with a water inlet joint communicating with the water inlet 13 61. In this way, the second housing 12 can be connected with the tap water pipe through the water inlet joint 61, and at the same time, the first housing 11 can be connected with the water inlet pipe of the water heater or the safety valve through the water outlet joint 62 to connect the pre-filter 100 is connected to the water circuit of the water heater to realize the filtration of water.

Optionally, the water inlet connector 61 can be provided with an internal thread, and the water outlet connector 62 can be provided with an external thread, so that the water inlet connector 61 can be easily and quickly connected to the tap water pipe through thread fit, and at the same time, the water inlet connector 61 can be connected to the water pipe through thread fit The water outlet joint 62 is connected with the water inlet pipe or the safety valve of the water heater, which can not only improve the efficiency of disassembly and assembly, but also be reliable in connection.

According to some embodiments of the present invention, at least one of the first housing 11 and the second housing 12 may be a transparent part. For example, the first housing 11 may be a transparent member. By setting at least one of the first housing 11 and the second housing 12 as a transparent member, it is convenient for the user to observe the filtering situation of the filter screen 22 inside the pre-filter 100. If the filter screen 22 retains more impurities, The user can remove the filter screen 22 for cleaning.

When the pre-filter 100 has been used for a period of time and the user observes that the filter screen 22 retains more impurities, the water inlet can be closed first, and then the first housing 11 and the second housing 12 are removed to take out the filter screen assembly 2 , the filter screen 22 is scrubbed, the impurities retained by the filter screen 22 are removed, and finally the cleaned filter screen assembly 2 is reinstalled for continued use.

In summary, according to the pre-filter 100 for a water heater according to the embodiment of the present utility model, when the water to be filtered enters the filter chamber 101 from the water inlet 13, the filter screen assembly 2 can filter it and intercept tap water The silt, rust, colloid, bloodworm and other impurities in the water can reduce the turbidity of tap water and reduce the probability of water heater scaling. Moreover, after using it for a period of time, the user can disassemble the first housing 11 and the second housing 12, and disassemble and clean the filter screen assembly 2, so that not only is it small in size, easy to install, but also thoroughly cleaned, enabling repeated use , and has the advantages of low cost.

In addition, the utility model also discloses a water heater, including the pre-filter 100 for the water heater according to the above-mentioned embodiment of the utility model.

The water heater according to the embodiment of the utility model has the pre-filter 100 for the water heater according to the above-mentioned embodiment of the utility model, thereby improving the heating efficiency, avoiding the growth of internal bacteria, improving the quality of the effluent water, and ensuring the health of the water.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (13)

1. for a fore filter for water heater, it is characterized in that, comprising:

Shell, described shell comprises the first housing and the second housing, and described first housing and the second housing are detachably installed and jointly limit filter chamber, and described filter chamber has water inlet and delivery port;

Net-filter assembly, described net-filter assembly to be located in described filter chamber and between described water inlet and described delivery port.

2. the fore filter for water heater according to claim 1, is characterized in that, described net-filter assembly comprises:

Support, described support is positioned in described filter chamber;

Filter screen, described filter screen is established on the bracket and between described water inlet and described delivery port.

3. the fore filter for water heater according to claim 2, is characterized in that, described support comprises:

Inner support frame;

End support shelves, described end support shelves is connected with described inner support frame, described filter screen to be located on described inner support frame and to be connected with described end support shelves, the gap of described end support shelves between described filter screen and described delivery port and between the sidewall sealing described filter screen and described filter chamber.

4. the fore filter for water heater according to claim 3, is characterized in that, is provided with the first sealing ring further between the sidewall of described end support shelves and described filter chamber.

5. the fore filter for water heater according to claim 3, is characterized in that, described filter screen comprises:

Tubular filter house, described tubular filter house to be set on described inner support frame and to be connected with described end support shelves;

End filter house, described end filter house is located at one end of the described water inlet of vicinity of described tubular filter house.

6. the fore filter for water heater according to claim 5, is characterized in that, described end support shelves is toroidal frame.

7. the fore filter for water heater according to claim 5, is characterized in that, described net-filter assembly also comprises:

At least two are only supported ball, with the spaced apart from inner walls of the junction and described filter chamber that make described end filter house and described tubular filter house between the described inwall being only located at described end filter house and described filter chamber to ball.

8. the fore filter for water heater according to any one of claim 1-7, is characterized in that, described filter chamber comprises:

Inlet segment, the contiguous described water inlet of described inlet segment;

Water exit end, the contiguous described delivery port of described water exit end;

Interlude, described interlude is located between described inlet segment and described water exit end, wherein, the cross-sectional area of described inlet segment is increased gradually by described water inlet to described interlude, and the cross-sectional area of described water exit end is reduced gradually by described interlude to described delivery port.

9. the fore filter for water heater according to claim 1, is characterized in that, described first housing and the second housing are threaded, and is provided with the second sealing ring between described first housing and described second housing.

10. the fore filter for water heater according to claim 1, is characterized in that, described first housing is positioned at above described second housing, and described water inlet is located on described second housing and described delivery port is located on described first housing.

11. fore filters for water heater according to claim 10, it is characterized in that, described first housing is provided with the water out adapter be communicated with described delivery port, described second housing is provided with the water supply connector be communicated with described water inlet.

12. fore filters for water heater according to claim 1, is characterized in that, at least one in described first housing and described second housing is Transparent Parts.

13. 1 kinds of water heaters, is characterized in that, comprise the fore filter for water heater according to any one of claim 1-12.