Middle frame and water purification equipment for water purification equipment

Abstract

The present invention discloses a middle frame for water purification equipment and water purification equipment, wherein the middle frame comprises: a connecting base shell; two or more hollow support columns, the connecting base shell connects the two or more hollow support columns together; the hollow support columns extend in the vertical direction to construct a columnar filter element cavity arranged in parallel; and the ratio between the diameter D of the filter element cavity and the height H of the filter element cavity is less than 1 / 2; or the shortest spacing L between two adjacent filter element cavities is greater than 1 / 6 of the smallest filter element cavity diameter D1 in the hollow support column. According to the middle frame for water purification equipment of the embodiment of the present invention, by reasonably designing the filter element cavity diameter and the filter element cavity height, the space requirement of integrating multi-stage filter elements into a composite filter element is met, the waterway system is optimized, and the problems of displacement of the filter element and damage to the waterway plate are avoided.

Description

[0001] This application is based on the Chinese patent applications with application numbers 201810744406.9, 201810744330.X, 201810744329.7, 201810744526.9, 201821081878.2 and 201821078466.3, and application date July 9, 2018 and application numbers 201920199133.4, 201910115178.3, and application date February 14, 2019, and claims the priority of the above patent applications. The entire contents of the above patent applications are hereby introduced into this application as a reference. Technical Field

[0002] The present invention relates to the technical field of household appliances, and more specifically, to a middle frame for a water purification device and the water purification device. Background Art

[0003] In the related art, the water purification equipment includes at least two filter elements. Since conventional filter elements usually have four to five stages, integrating the multi-stage filter elements into one filter element (composite filter element) is a preferred solution. However, the problem with the composite filter element is that the composite filter element is large in size, and the volume of the whole machine is limited by space. Therefore, the size of the middle frame for placing the composite filter element needs to be optimized.

[0004] When assembling such a large composite filter element for a water purifier, various problems often occur, such as the large size of the filter element, which is prone to displacement and vibration when fixed on a thinner waterway plate, which may cause noise or damage the interface of the waterway plate.

[0005] In addition, the connecting base shell and hollow support column of the middle frame structure of the water purification equipment are formed by an integrated injection molding process. Since the tube wall of the hollow support column is thin and the tube body is long, it is very easy to break or deform. Moreover, when demolding, the hollow support column is easy to move with the core pulling block, which makes it difficult for workers to remove the product, affecting production efficiency. Summary of the invention

[0006] The present invention aims to solve one of the above technical problems at least to a certain extent.

[0007] To this end, the present invention aims to provide a middle frame for water purification equipment with high structural strength and good accommodation capacity.

[0008] The present invention also provides a water purification device with high production efficiency and low cost.

[0009] According to an embodiment of the present invention, a middle frame for a water purification device includes: a connecting base shell; two or more hollow support columns, wherein the connecting base shell connects the two or more hollow support columns together; the hollow support columns extend in a vertical direction to construct columnar filter cartridge cavities arranged in parallel; and the ratio between the diameter D of the filter cartridge cavity and the height H of the middle frame is less than 1 / 2; or the shortest distance L between the edges of two adjacent filter cartridge cavities is greater than 1 / 6 of the smallest filter cartridge cavity diameter D1 in the hollow support columns.

[0010] The middle frame for water purification equipment according to the embodiment of the present invention meets the space requirement of integrating multi-stage filter elements into a composite filter element by reasonably designing the filter element cavity diameter and the middle frame height, optimizes the water system, avoids problems such as displacement of the filter element and damage to the water plate, and at the same time avoids the problem of poor accommodation of the filter element by the middle frame due to large differences in the sizes of multi-stage filter elements and filter element adapters.

[0011] In addition, the housing assembly for a water purification device according to the above embodiment of the present invention may also have the following additional technical features:

[0012] In some embodiments of the present invention, a structural reinforcement is provided between two or more adjacent hollow support columns, and two ends of the structural reinforcement are respectively connected to the outer circumferential surfaces of the two hollow support columns.

[0013] In some embodiments of the present invention, an interference portion is provided on the outer surface of the hollow support column, and the interference portion is concave or convex relative to the outer surface of the hollow support column.

[0014] In some embodiments of the present invention, the structural reinforcement and the hollow support column are provided with at least one reinforcement rib.

[0015] In some embodiments of the present invention, an interference portion is provided on the outer surface of the hollow support column, and the reinforcing rib is parallel to the interference portion.

[0016] In some embodiments of the present invention, a cross section of the interference portion in the longitudinal direction is V-shaped.

[0017] In some embodiments of the present invention, the interference portion includes: an ascending section and a descending section, both of which extend toward one side of the center direction of the tube body and intersect with each other, and an angle α between the ascending section and the descending section is between 120-180°.

[0018] In some embodiments of the present invention, the inclination angle of the upward segment relative to the vertical direction is greater than the inclination angle of the downward segment relative to the vertical direction, wherein the angle between the upward segment and the vertical direction is β, and β is between 110-180°.

[0019] In some embodiments of the present invention, the interference portion surrounds the outer circumference of the hollow support column.

[0020] In some embodiments of the present invention, the wall thickness of the hollow support column is between 2.5-3 mm.

[0021] The water purification equipment according to the second aspect of the embodiment of the present invention comprises the middle frame for the water purification equipment of the above-mentioned embodiment. Since the middle frame according to the embodiment of the present invention is not easy to be cracked or broken during the injection molding process and is easy to be demoulded, the water purification equipment according to the embodiment of the present invention has high production efficiency and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a perspective view of a water purification device according to some embodiments of the present invention;

[0024] Figure 2 is a perspective view of a middle frame according to some embodiments of the present invention;

[0025] Figure 3 is a front view of a middle frame according to some embodiments of the present invention;

[0026] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0027] Figure 5 is along Figure 3 Sectional view along the midline BB;

[0028] Figure 6 yes Figure 5 Enlarged view of point C in the middle;

[0029] Figure 7 Cross-sectional views of middle frames according to other embodiments of the present invention;

[0030] Figure 8 yes Figure 7 The enlarged view of point D in the middle;

[0031] Fig. 9 A front view of a water purification device according to some embodiments of the present invention;

[0032] Fig.10 is along Fig. 9 Sectional view along line EE;

[0033] Fig.11 yes Fig.10 The enlarged view of F in the middle;

[0034] Fig.12 yes Fig.10 Enlarged view of G in the middle;

[0035] Fig.13 is a perspective view of a housing according to some embodiments of the present invention;

[0036] Fig.14 yes Fig.13 Enlarged view of the middle W;

[0037] Fig.15 is a top view of a housing according to some embodiments of the present invention;

[0038] Fig.16 yes Fig.15 Enlarged view of the middle Z;

[0039] Fig.17 A top view of a water purification device according to some embodiments of the present invention;

[0040] Fig.18 is an exploded view of a water purification device according to some other embodiments of the present invention;

[0041] Fig.19 yes Fig.18 The enlarged view of the H in the middle;

[0042] Fig. 20 are cross-sectional views of water purification devices according to other embodiments of the present invention;

[0043] Fig.21 is a perspective view of a water pump according to some other embodiments of the present invention;

[0044] Fig. 22 is a perspective view of a water pump housing according to some other embodiments of the present invention;

[0045] Fig.23 is a perspective view of a water pump housing according to some other embodiments of the present invention;

[0046] Fig.24 is a top view of a water pump housing according to some other embodiments of the present invention;

[0047] Fig.25 yes Fig.24 The enlarged view of point I in the middle;

[0048] Fig.26 is a top view of a water pump housing according to some other embodiments of the present invention;

[0049] Fig. 27 yes Fig.26 The enlarged view of J in the middle;

[0050] Fig.28 is a top view of a water pump housing according to some other embodiments of the present invention;

[0051] Fig.29 yes Fig.28 Enlarged view of K in the middle;

[0052] Fig.30 is a top view of a water pump housing according to some other embodiments of the present invention;

[0053] Fig.31 yes Fig.30 Enlarged view of L in the middle;

[0054] Fig.32 is a top view of a middle frame according to some other embodiments of the present invention;

[0055] Fig.33 is a partial cross-sectional view of a middle frame according to some other embodiments of the present invention.

[0056] Reference numerals:

[0057] DETAILED DESCRIPTION

[0058] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0059] The water purification equipment includes at least two filter elements. Since conventional filter elements usually have four to five stages, integrating the multi-stage filter elements into one filter element (composite filter element) is a preferred solution. However, the problem with the composite filter element is that the composite filter element is large in size, and the volume of the whole machine is limited by space. Therefore, the size of the middle frame for placing the composite filter element needs to be optimized.

[0060] In addition, when assembling such a large composite filter element for a water purifier, various problems often occur, such as the large size of the filter element, which is prone to displacement and vibration when fixed on a thinner waterway plate, which may cause noise or damage the interface of the waterway plate.

[0061] In order to solve the above-mentioned technical problems of the composite filter element, the present invention proposes a middle frame structure of a water purification device.

[0062] Reference Figure 1-Figure 11 The middle frame 20 used in the water purification apparatus 1000 according to the embodiment of the present invention is described.

[0063] like Figures 1 to 3 , Figure 32-Figure 33As shown, the middle frame includes a connecting base shell and at least two hollow support columns. Two or more hollow support columns are connected together through the connecting base shell, and the hollow support columns extend in a vertical direction to form a columnar filter element cavity arranged in parallel.

[0064] The middle frame 20 is located inside the outer shell 10. The outer contour of the connecting base shell 21 matches the inner contour of the outer shell 10. The connecting base shell 21 has a plurality of escape holes 2111 penetrating the top and bottom surfaces thereof. A hollow support column 22 is formed at the bottom of the connecting base shell 21 corresponding to the escape holes 2111. The hollow support column 22 is formed from one side (such as Figure 2 The upper side of the middle frame 20) to the other side (such as Figure 2 Extending in the direction of the lower side of the middle frame 20).

[0065] It is understandable that, since the shape and structure of the connecting base shell 21 match the outer shell 10 , the inner wall surface of the outer shell 10 and the outer wall surface of the middle frame 20 better match and lean against each other to form the shell structure of the shell assembly 100 .

[0066] The hollow support column 22 divides the cavity into a plurality of independent installation and positioning spaces. For example, a filter element, a water pump or an adapter can be placed in the hollow support column 22. For example, the filter element can be placed in the hollow support column 22 through the avoidance hole 2111.

[0067] The inventor conducted multiple tests on the middle frame and found that the overall structural strength of the middle frame 20 is related to the diameter of the filter element cavity and the height of the middle frame 20, and the diameter of the filter element cavity must be smaller than the height of the middle frame 20. Among them, the diameter of the filter element cavity is D, and the height of the middle frame 20 is H. The inventor further found that when D / H is set to 0-1 / 2, the middle frame 20 will hardly have deformation and damage problems, and it is not easy to displace when the composite filter element is loaded in the filter element cavity and the filter element is fixed on a thinner waterway plate, and there is almost no sound during the operation or transportation process. At the same time, it can avoid the problem of poor accommodation of the filter element by the middle frame due to the large differences in the size of the multi-stage filter element and the filter element adapter.

[0068] In addition, the inventors also found that the ratio of the shortest distance between two adjacent filter element cavities to the diameter of the filter element cavity is also closely related to the structural strength of the middle frame 20, wherein the shortest distance is L, the smallest diameter of the filter element cavity is D1, and L>1 / 6D1. During the drop and impact resistance tests, the middle frame will hardly deform or break, and can effectively protect the filter element in the filter element cavity to prevent displacement or damage to the waterway plate.

[0069] Therefore, according to the middle frame 20 for water purification equipment in an embodiment of the present invention, by reasonably designing the filter element cavity diameter and the middle frame height, the space requirement for integrating multi-stage filter elements into a composite filter element is met, the water system is optimized, and problems such as displacement of the filter element and damage to the waterway plate are avoided.

[0070] As a preferred embodiment of the present invention, the middle frame 20 can be formed by the following injection molding process. First, the mold is divided into an upper mold and a lower mold, the upper mold has a first left mold, a core-pulling piece and a first right mold, and the lower mold has a second left mold and a second right mold. When the upper mold and the lower mold are pressed tightly, injection is performed into the mold. After a period of time, when the middle frame 20 is formed, the core-pulling piece is first pulled out, and then the first left mold and the first right mold are separated, and the second left mold and the second right mold are separated.

[0071] Secondly, the mold is divided into a left mold, a middle mold and a right mold. The core-pulling block is formed on the middle mold. When the left mold and the right mold are pressed tightly, the core-pulling block is located in the cavity formed by the left mold and the right mold. Then injection molding is performed into the mold. After the middle frame 21 is formed, the core-pulling block is first pulled out, and then the left mold and the right mold are separated.

[0072] The following technical problems may be encountered during the injection molding process of the middle frame 20. After the injection molding of the middle frame 20 is completed, the core-pulling block needs to be pulled out. When the upper mold or the middle mold moves upward, the core-pulling block also moves upward from the hollow support column 22 along with the movement of the upper mold or the middle mold. Since the friction between the inner surface of the hollow support column 22 and the core-pulling block is relatively large, it is easy to pull the hollow support column 22 out of the lower mold, and even break or crack the hollow support column 22.

[0073] In addition, due to the longitudinal length of the hollow support column 22 (such as Figure 2 The hollow support column 22 is too long (in the vertical direction) and it is inconvenient for workers to remove the hollow support column 22 from the lower mold. Therefore, the inventor has made improvements to the structure of the middle frame 20 after in-depth research. An interference portion is provided on the outer surface of the hollow support column 22, and the interference portion is concave or convex relative to the outer surface of the hollow support column.

[0074] Specifically, Figure 2 and Figure 3 As shown, the middle frame 20 includes: a connecting base shell 21 and a plurality of hollow support columns 22. The hollow support columns 22 are connected to the bottom of the connecting base shell 21 and extend downward in the vertical direction. The connecting base shell 21 is provided with an avoidance hole 2111 penetrating the upper and lower surfaces thereof, and the hollow support columns 22 are connected with the avoidance hole 2111. The outer surface of the hollow support column 22 is provided with an interference portion 221. When the die is pulled out, the interference portion 221 cooperates with the lower die to prevent the hollow support column 22 from moving synchronously with the core-pulling block and the upper die.

[0075] In other words, the middle frame 20 includes Figure 2 and Figure 3The connecting base shell 21 extending in the left-right direction and the hollow support column 22 extending in the up-down direction are formed on the connecting base shell 21. That is, the multiple hollow support columns 22 are located on the same side of the connecting base shell 21 (such as Figure 2 and Figure 3 on the lower side of the display).

[0076] The present application sets an interference portion 221 on the outer surface of the hollow support column 22. When the core pulling block is demolded, the core pulling block has a force F1 that drives the hollow support column 22 upward. The interference portion 221 cooperates with the lower mold to apply a downward force F2 to the hollow support column 22, wherein the direction of F2 is opposite to that of F1, thereby preventing the hollow support column 22 from being pulled out of the lower mold. As a result, the hollow support column 22 can be prevented from following the movement of the core pulling block, thereby preventing the hollow support column 22 from being broken or cracked. In addition, due to the influence of the interference portion 221, the hollow support column 22 is easier to be removed from the lower mold.

[0077] The number of the hollow support columns 22 is not particularly limited. For example, the number of the hollow support columns 22 may be two, three, or more than three. Figure 2 and Figure 3 As shown, there are two hollow support columns 22 arranged side by side and spaced apart, one of which is connected to the left side of the connecting base shell 21, and the other is connected to the right side of the connecting base shell 21. By distributing the hollow support columns 22 at intervals on the left and right sides of the connecting base shell 21, the structural stability of the middle frame 20 can be improved.

[0078] Since the integration of the composite filter element is relatively high, the length and diameter of the filter element are usually relatively large. For example, in a preferred embodiment, the height range H of the middle frame of the present invention is set between 250MM-600MM, and preferably, the height range H of the middle frame of the present invention is set between 350mm-500mm; the diameter D of the filter element cavity provided in the middle frame is set between 80MM-120mm; preferably, the ratio of D / H is less than 1 / 2.

[0079] The height of the middle frame 20 can be understood as the height of the middle frame 20 that can cover the upper and lower ends of the filter element. It can be understood that the upper and lower ends of the middle frame 20 can have a portion of margin for installing or fixing the outer shell, or other components connected to the filter element, such as a waterway plate.

[0080] After a large number of tests, the inventors obtained the numerical relationship between the filter element diameter, the filter element cavity diameter, the filter element height, the height of the middle frame, the shortest distance L between two adjacent filter element cavities and the operating noise, as shown in the following table:

[0081]

[0082] According to internal guidance standards, the criteria for passing the drop test are: the product should not be damaged or defective after the test, the carton is not allowed to be damaged, the foam is allowed to crack, the product should be able to work normally and not have other defects, the product casing and other accessories should not be defective or damaged, and the product should be able to pass the routine electrical performance inspection after the drop test to be qualified.

[0083] After a large number of drop tests, the applicant found that when the filter element cavity diameter D and the middle frame height H satisfy D / H less than 1 / 2, and the relationship between the shortest distance between the edges of two adjacent filter element cavities and the smallest filter element cavity diameter D1 in the hollow support column 22: L is greater than D1 / 6, the drop test failure rate is less than the failure rate when D / H is greater than or equal to 1 / 2 and L is less than or equal to D1 / 6.

[0084] Of course, the above embodiments are merely illustrative and cannot be construed as limiting the scope of protection of the present invention. For example, there may be only one hollow support column 22, which is connected to the middle of the connecting base shell 21. There may also be three hollow support columns 22, which are arranged side by side and spaced apart from each other or in a triangular shape.

[0085] Therefore, according to the middle frame 20 for the water purification device 1000 according to the embodiment of the present invention, by setting the interference part 221 on the outer surface of the hollow support column 22, the middle frame 20 is less likely to be pulled apart or broken during the injection molding process, thereby improving the yield of the middle frame 20.

[0086] In an optional embodiment, if Figure 3 Combination Figure 4 ,like Figure 5 Combination Figure 6 , Figure 7 Combination Figure 8 The interference portion 221 is concave or convex relative to the outer surface of the hollow support column 22. The "concave" means that the interference portion 221 is concave toward the center of the hollow support column 22. In other words, the outer surface of the hollow support column 22 is at least partially concave, so that the thickness of the tube wall at the interference portion 221 is small. Figure 5 Combination Figure 6 As shown. "Concave" means that the interference portion 221 protrudes outward away from the center direction of the hollow support column 22. In other words, the outer surface of the hollow support column 22 is at least partially convex, so that the wall thickness of the hollow support column 22 at the interference portion 221 is larger. In other words, the outer surface of the hollow support column 22 is not a straight surface. The concave or convex interference portion 221 is used to change the friction resistance between the outer surface of the hollow support column 22 and the lower mold, thereby changing the stress of the hollow support column 22 during core pulling, thereby preventing the hollow support column 22 from being cracked or broken.

[0087] It should be noted that the above embodiment is only schematic, and the interference portion 221 may also be a rough surface formed on the outer surface of the hollow support column 22, such as a frosted surface. In this way, it can also change the friction between the hollow support column 22 and the lower mold, thereby changing the force condition of the hollow support column 22 during core pulling.

[0088] In a further optional embodiment, the interference portion 221 is in the longitudinal direction (eg Figure 6 or Figure 8 The cross section of the vertical direction is V-shaped. Figure 5 Combination Figure 6 The interference portion 221 is formed as a V-shaped concave surface open toward the radial outer end, and referring to Figure 7 Combination Figure 8 The interference portion 221 is formed as a convex point extending toward the radial outer end, and the outer contour of the convex point is V-shaped. It can be understood that the cross-sectional shape of the interference portion 221 in the longitudinal direction is not limited to the above, and the cross-sectional shape of the interference portion 221 in the longitudinal direction can also be square, quadrilateral, conical, etc.

[0089] In the optional example, Figure 5 Combination Figure 6 The interference portion 221 includes an upward section 2211 and a downward section 2212, and the upward section 2211 and the downward section 2212 both extend toward one side of the center direction of the tube body and intersect. That is, the upward section 2211 extends from top to bottom toward the center direction of the hollow support column 22, and the downward section 2212 extends from top to bottom toward the center direction away from the hollow support column 22, and the extension directions of the upward section 2211 and the downward section 2212 are opposite. In other words, the upward section 2211 extends downward and inwardly, so that the wall thickness of the hollow support column 22 at the upward section 2211 gradually decreases from top to bottom. The downward section 2212 extends downward and outwardly, so that the wall thickness of the hollow support column 22 at the downward section 2212 gradually increases from top to bottom. In other words, the wall thickness of the interference portion 221 of the hollow support column 22 first gradually decreases and then gradually increases, thereby effectively improving the friction between the hollow support column 22 and the lower die.

[0090] The angle between the upward segment 2211 and the downward segment 2212 is between 120° and 180°. For example, the angle is 120°, 130°, 140°, 150°, 160°, 170° or 179°. It is understood that the above is only exemplary and is not a limitation of the embodiments of the present invention. For example, the angle between the upward segment 2211 and the downward segment 2212 can be 100° and 110°.

[0091] In further optional examples, such as Figure 4As shown, the line connecting the outer end of the upward segment 2211 and the outer end of the downward segment 2212 coincides with the outer surface of the hollow support column 22. That is, in the projection from the top to the bottom, the outer end of the upward segment 2211 coincides with the outer end of the downward segment 2212. The outer surfaces of the part of the hollow support column 22 located above the upward segment 2211 and the part of the hollow support column 22 located below the downward segment 2212 are located in the same vertical plane, thereby improving the overall structural strength of the hollow support column 22.

[0092] In a specific embodiment, Figure 4 As shown, the distance h1 between the outer end of the upward section 2211 and the outer end of the downward section 2212 is between 4 and 10 mm. That is, when the interference portion 221 is concave relative to the outer surface of the hollow support column 22, the height of its V-shaped longitudinal cross section is between 4 and 10 mm. For example, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm and 10 mm. It can be understood that by adjusting the distance h1 between the outer end of the upward section 2211 and the outer end of the downward section 2212, the friction between the lower mold and the hollow support column 22 is changed, thereby effectively preventing the hollow support column 22 from being broken or cracked during the core pulling process.

[0093] In a further optional example, the vertical distance d1 between the intersection of the upward segment 2211 and the downward segment 2212 and the connecting line is between 0.3 and 0.8 mm. The connecting line and the outer surface of the hollow support column 22 are located in the same vertical plane, that is, the vertical distance between the innermost end of the interference portion 221 (the end closest to the center of the hollow support column 22) and the outer surface of the hollow support column 22 is between 0.3 and 0.8 mm. For example, d1 is 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm and 0.8 mm.

[0094] In an optional example, the inclination angle of the upward section 2211 relative to the vertical direction is greater than the inclination angle of the downward section 2212 relative to the vertical direction. In other words, the slope formed by the upward section 2211 is steeper, and the slope formed by the downward section 2212 is gentler, that is, the extension distance of the upward section 2211 in the up-down direction is greater than the extension distance of the downward section 2212 in the up-down direction. Designing the interference portion 221 in this way is more conducive to the lower mold being removed from the hollow support column 22, thereby improving the demoulding efficiency. Among them, the angle between the upward section and the vertical direction is β, and β is between 110-180°. For example, β is 110°, 120°, 130°, 140°, 150°, 160° and 179°.

[0095] In the optional example, the outer surface of the upper section 2211 and the outer surface of the hollow support column 22 and the outer surface of the lower section 2212 and the hollow support column 22 are smoothly transitioned. That is, the outer surface of the hollow support column 22 has no edges and corners, which prevents workers from being stabbed during the moving process and facilitates its connection with other components.

[0096] In an optional embodiment, if Figure 7 and Figure 8 As shown, the interference portion 221 includes: an upward section 2211 and a downward section 2212, and the upward section 2211 and the downward section 2212 both extend away from one side of the center direction of the hollow support column 22 and intersect. In other words, the interference portion 221 protrudes from the outer surface of the hollow support column 22, and the wall thickness of the hollow support column 22 at the interference portion 221 is relatively large. Among them, the angle between the upward section 2211 and the downward section 2212 is between 0-60°, for example, the angle is 10°, 20°, 30°, 40°, 50° or 60°.

[0097] In further optional examples, such as Figure 7 and Figure 8 As shown, the outer contour of the interference portion 221 is a smooth curved surface. For example, the outer contour of the interference portion 221 is a smooth arc surface. Thus, the outer surface of the hollow support column 22 can be made smoother and rounder to prevent cutting hands and hurting people.

[0098] In an optional embodiment, if Figure 2 and Figure 3 ,like Fig.10 and Fig.11 , the interference portion 221 surrounds the outer circumference of the hollow support column 22. The outer surface of the hollow support column 22 may include a plurality of interference portions 221, and the plurality of interference portions 221 divide the hollow support column 22 into a plurality of tube sections, each interference portion 221 being located between two tube sections, wherein the outer surface of the interference portion 221 is convex or concave relative to the outer surface of the hollow support column 22, and the inner surface of the interference portion 221 is on the same vertical plane as the inner surface of each tube section. In addition, the number of the interference portions 221 is not limited, for example, the number of the interference portions 221 may be one, two, three or more than three, thereby dividing the hollow support column 22 into two tube sections, three tube sections, four tube sections or more than four tube sections.

[0099] In an optional embodiment, if Fig.10 and Fig.11 , the wall thickness of the hollow support column 22 is between 0.5-3 mm. For example, the wall thickness of the hollow support column 22 is 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm and 3 mm. It is understood that the above is only illustrative and is not a limitation of the embodiments of the present invention.

[0100] The water purification equipment 1000 according to an embodiment of the present invention includes the middle frame 20 for the water purification equipment 1000 of the above-mentioned embodiment. Since the middle frame 20 according to the embodiment of the present invention is not easy to be torn or broken during the injection molding process and is easy to be demolded, the water purification equipment 1000 according to the embodiment of the present invention has high production efficiency and low cost.

[0101] Refer to the following Figure 1-Figure 17 A water purification apparatus 1000 according to some embodiments of the present invention is described.

[0102] like Fig.13 Combination Fig.15 As shown, the housing 10 of the housing assembly 100 for the water purification device 1000 includes a first side wall 11, a second side wall 12, a third side wall 14 and a fourth side wall 13 connected end to end in sequence, and the first side wall 11 and the second side wall 12 are relative to the first direction (such as Fig.15 The third side wall 14 and the fourth side wall 13 are symmetrically arranged relative to the second direction (such as Fig.15 The first side wall 11, the second side wall 12, the third side wall 14 and the fourth side wall 13 are symmetrically arranged, and the connecting parts of the first side wall 11, the second side wall 12, the third side wall 14 and the fourth side wall 13 are smoothly connected, and at least two opposite side walls of the first side wall 11, the second side wall 12, the third side wall 14 and the fourth side wall 15 are arc-shaped walls.

[0103] For example, refer to Fig.15 , from the top view direction, the shell 10 is an oblong structure, the first side wall 11 and the second side wall 12 are located at the front and rear sides, and the third side wall 14 and the fourth side wall 13 are located at the left and right sides, wherein the first side wall 11 and the second side wall 12 may be arc-shaped walls, or the third side wall 14 and the fourth side wall 13 may be arc-shaped walls, or the first side wall 11 and the second side wall 12, the third side wall 14 and the fourth side wall 13 may all be arc-shaped walls. In other words, at least a portion of the wall surface of the shell 10 is a curved surface, for example, an arc surface. The projection of the shell 10 on the horizontal plane may be an oblong, for example, an ellipse.

[0104] Since the first side wall 11 , the second side wall 12 , the third side wall 14 and the fourth side wall 13 are connected in a smooth transition, the outer wall surface and the inner wall surface of the shell 10 are relatively smooth and rounded, which can improve the structural strength of the shell 10 .

[0105] Of course, the housing 10 of the embodiment of the present invention is not limited to the above-mentioned oblong structure, and the arc-shaped wall of the housing 10 is not limited to Fig.15 As shown in FIG. 1 , the arc-shaped wall is convex outwardly toward a direction away from the center of the housing 10 , and the arc-shaped wall may also be convex inwardly toward a direction close to the center of the housing 10 .

[0106] Since at least two opposite side walls of the shell 10 are arc-shaped walls, the shell 10 has a stronger ability to resist deformation, improves its structural strength, is more resistant to external impact, and increases the service life of the shell 10.

[0107] According to the shell assembly 100 for the water purification equipment 1000 according to an embodiment of the present invention, by setting at least two opposite side walls of the shell 10 as arc-shaped walls, the horizontal distance of the shell 10 in the first direction and / or the second direction can be appropriately reduced, so that the structural strength of the shell 10 is stronger and the space occupied is small, and the various components of the water purification equipment 1000 can also be compactly arranged in the shell 10, thereby improving the structural strength of the shell 10 and avoiding hollowing and damage during transportation and handling.

[0108] In an optional embodiment, if Fig.15 As shown, the perimeters of the first side wall 11 and the second side wall 12 are greater than the perimeters of the third side wall 14 and the fourth side wall 13. In other words, the horizontal distance of the housing 10 in the first direction is smaller than the horizontal distance in the second direction, that is, the housing 10 in the first direction is smaller than the horizontal distance in the second direction. Fig.15 The extension distance in the left-right direction is greater than the extension distance in the front-back direction.

[0109] In an optional embodiment, if Fig.13 Combination Fig.16 and Fig.17 As shown, the outer wall surfaces of the first side wall 11 and the second side wall 12 are planes, and the wall surfaces of the third side wall 14 and the fourth side wall 13 are convex in the direction away from the center of the shell 10. In other words, the third side wall 14 and the fourth side wall 13 are arc-shaped walls, and the first side wall 11 and the second side wall 12 are straight surfaces. From the top view direction, the shell 10 is an oblong. In other words, a part of the wall surface of the shell 10 is a plane, and the other part is a curved surface. Among them, the third side wall 14 and the fourth side wall 13 are located at the left and right ends of the shell 10, and the second side wall 12 and the fourth side wall 13 are located at the front and back sides of the middle part of the shell 10. Since the third side wall 14 and the fourth side wall 13 are arc-shaped walls, they have strong anti-deformation ability, the first side wall 11 and the second side wall 12 are straight structures, and the structure is relatively stable. The first side wall 11 and the second side wall 12 and the third side wall 14 and the fourth side wall 13 can compensate each other, thereby better improving the structural stability of the shell 10 and preventing the shell 10 from excessive deformation.

[0110] In an optional embodiment, refer to Fig.15, the center angle α of the third side wall 14 and the fourth side wall 13 is between 30-180°. In this embodiment, the "center angle" refers to the angle of the circle corresponding to the cross section of the third side wall 14 and the fourth side wall 13, that is, from the top view direction, the third side wall 14 and the fourth side wall 13 can be semicircular or arcuate. For example, the center angle of the third side wall 14 and the center angle of the fourth side wall 13 can be 30°, 45°, 60°, 90°, 120°, 135°, 130° or 180°. It can be understood that when the radius of curvature of the third side wall 14 and the fourth side wall 13 is fixed, the larger the center angle of the third side wall 14 and the fourth side wall 13, the larger the horizontal spacing between the first side wall 11 and the second side wall 12, and the larger the spatial volume defined by the shell 10. On the contrary, the smaller the central angle of the third side wall 14 and the fourth side wall 13 is, the smaller the horizontal distance between the first side wall 11 and the second side wall 12 is, and the smaller the volume of the space defined by the housing 10 is. In this way, the size of the housing 10 can be adjusted according to the size of each component to be placed, so that each component is arranged in an orderly and compact manner in the housing 10.

[0111] In an optional embodiment, refer to Fig.13 and Fig.15 The first side wall 11, the second side wall 12, the third side wall 14 and the fourth side wall 13 form a cavity with both upper and lower ends open, and the housing assembly 100 also includes: a middle frame 20, and the middle frame 20 is built in the cavity. That is, the housing 10 is a hollow frame structure, and the cavity can be used to install and position components such as the middle frame 20. In other words, the housing assembly 100 generally includes the housing 10 located on the outside and the middle frame 20 located on the inside.

[0112] Specifically, Figure 2 and Figure 3 As shown, the middle frame 20 includes: a connecting base shell 21 and a plurality of hollow support columns 22. The outer contour of the connecting base shell 21 matches the inner contour of the housing 10, and the connecting base shell 21 has a plurality of escape holes 2111 penetrating the top and bottom surfaces thereof. The hollow support columns 22 are formed at the bottom of the connecting base shell 21 and correspond to the escape holes 2111. The hollow support columns 22 are formed from one side (such as Figure 2 The upper side of the middle frame 20) to the other side (such as Figure 2 Extending in the direction of the lower side of the middle frame 20).

[0113] It is understandable that, since the shape and structure of the connecting base shell 21 match those of the shell 10 , the inner wall surface of the shell 10 and the outer wall surface of the middle frame 20 better match and lean against each other to form the shell structure of the shell assembly 100 .

[0114] The hollow support column 22 divides the cavity into a plurality of independent installation and positioning spaces. For example, a filter element, a water pump or an adapter can be placed in the hollow support column 22. For example, the filter element can be placed in the hollow support column 22 through the avoidance hole 2111.

[0115] In addition, the hollow support column 22 may include one, two or more than two, for example, Figure 18-Figure 20 As shown, there are two hollow support columns 22, which are arranged side by side and spaced apart. It is understandable that the above is only for illustration and is not a limitation of the embodiment of the present invention. The number of hollow support columns 22 can be three, which are formed side by side in a line at the bottom of the connecting base shell 21.

[0116] In the optional example, Fig.18 , the projection of the connecting base shell 21 on the horizontal plane covers the projection of the hollow support column 22 on the horizontal plane. In other words, the outer periphery of the connecting base shell 21 exceeds the outer periphery of the hollow support column 22, and after the middle frame 20 is built into the cavity, the outer side surface of the connecting base shell 21 is closer to the inner wall surface of the housing 10 than the outer side surface of the hollow support column 22.

[0117] In the optional example, Figure 2-Figure 3 As shown, a plurality of hollow support columns 22 are arranged at intervals, and a structural reinforcement member 50 is provided between two hollow support columns 22, and the two ends of the structural reinforcement member 50 are respectively connected to the outer circumference of the two hollow support columns 22. In other words, one end of the plurality of hollow support columns 22 (such as Figure 2 The upper end of each hollow support column 22 is connected to the connecting base shell 21, and the other end of each hollow support column 22 (such as Figure 2 The lower end of the hollow support column 22 is connected to the structural reinforcement 50, so that even when the filter element and other components are loaded in the hollow support column 22, various forces can be dispersed on the structural reinforcement 50 and the connecting base shell 21, thereby improving the stability of the internal structure of the housing assembly 100. In addition, the structural reinforcement 50 can be arched, and the arched structural reinforcement 50 provides a larger force-bearing surface, thereby further improving the stability of the housing assembly 100 structure.

[0118] In a further optional embodiment, Figure 2 and Fig.18 As shown, the structural reinforcement 50 and the hollow support column 22 are provided with at least one reinforcing rib 222. The outer surface of the hollow support column 22 is provided with an interference portion 221, and the reinforcing rib 221 is parallel to the interference portion 221, thereby further improving the structural stability of the housing assembly 100.

[0119] In the optional example, Fig.10 Combination Fig.12As shown, the inner wall surface of the housing 10 is formed with a plurality of spaced convex ribs 19, and the convex ribs 19 and the inner wall surface of the housing 10 form a notch 191, and the top of the connecting base shell 21 is provided with a latch 213 that matches the notch 191. That is, the connection between the housing 10 and the middle frame 20 is achieved by the latch 213 matching the notch 191.

[0120] The rib 19 may extend along the longitudinal direction of the housing 10. Fig.13 As shown, the ribs 19 may also extend along the circumferential direction of the housing 10, which is not shown. By providing a plurality of ribs 19 on the inner circumferential wall of the housing 10, the structural strength of the housing 10 can be effectively improved, and the pressure resistance of the housing 10 can be improved.

[0121] In a specific embodiment, referring to Fig.10 Combination Fig.12 As shown, the latch 213 is arranged at the outer peripheral edge of the connecting base shell 21 and extends downward, the top surface of the convex rib 19 is recessed downward to form a notch 191 opening upward, and the latch 213 is inserted into the notch 191. That is, the latch 213 is inserted into the notch 191 from top to bottom, so that the middle frame 20 is suspended on the housing 10. The latch 213 and the notch 191 can be clearance or interference fit.

[0122] In a specific example, Fig.13 Combination Fig.16 As shown, the convex ribs 19 include a plurality of convex ribs 19, and the plurality of convex ribs 19 are distributed on at least one of the first side wall 11, the second side wall 12, the third side wall 14, and the fourth side wall 13. In other words, the plurality of convex ribs 19 can be formed on the first side wall 11 and / or the second side wall 12 and / or the third side wall 14 and / or the fourth side wall 13. Preferably, the plurality of groups of convex ribs 19 are evenly distributed on the first side wall 11, the second side wall 12, the third side wall 14, and the fourth side wall 13. Accordingly, the outer periphery of the connecting base shell 21 is also evenly distributed with the latch tongues 213. Thus, through the corresponding cooperation of the plurality of latch tongues 213 and the plurality of notches 191, the middle frame 20 can be relatively stably arranged in the cavity.

[0123] In addition, the ribs 19 evenly distributed on the inner wall of the shell 10 can also enhance the overall strength of the shell 10 . Preferably, the length of the ribs 19 is substantially consistent with the longitudinal length of the wall of the shell 10 .

[0124] In a further optional example, two convex ribs 19 form a group, and one latch 213 corresponds to one group of convex ribs 19. That is, one latch 213 is embedded in two notches 191 at the same time. In this way, the force of the latch 213 can be dispersed on the two convex ribs 19, avoiding the problem of the convex ribs 19 breaking.

[0125] In further optional examples, such as Fig.16As shown, the horizontal spacing l between two adjacent ribs 19 is between 1.5 and 3.5 mm. The spacing between two adjacent ribs 19 is the distance between the side of one rib 19 and the side of another rib 19. For example, the width of the horizontal spacing l is 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm or 3.5 mm. Of course, the above embodiments are only exemplary and cannot be understood as limiting the scope of protection of the present invention. For example, the spacing between the two ribs 19 can also be less than 1.5 mm or greater than 3.5 mm. That is, the horizontal spacing between the two ribs 19 can be adjusted accordingly according to the change in the size of the shell 10.

[0126] In further optional examples, such as Figure 14-16 As shown, the rib 19 includes: a connecting section 192 and a cylindrical section 193. The connecting section 192 is connected between the inner wall surface of the housing 10 and the cylindrical section 193 to support the middle frame 20 and strengthen the structural strength of the housing 10. When the middle frame 20 is inserted into the cavity, the cylindrical section 193 can play a guiding role, and can also abut against the outer peripheral surface of the middle frame 20 to play a limiting role. Therefore, there are relatively special requirements for the dimensions of the cylindrical section 193 and the connecting section 192.

[0127] Specifically, Fig.14 Combination Fig.16 As shown, the radial dimension r of the cross section of the cylindrical section 193 is between 1-2 mm. For example, the diameter of the cylindrical section 193 can be 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm or 2.0 mm. The diameter of the cylindrical section 193 is set between 1-2 mm. The volume of the cylindrical section 193 is small, and it does not occupy the accommodating cavity, and it can also achieve the functions of guiding and positioning. In addition, the strong pressure resistance can prevent the cylindrical section 193 from breaking or deforming inward. Of course, according to actual conditions, the diameter of the cylindrical section 193 can be appropriately increased or reduced. For example, the diameter of the cylindrical section 193 can also be between 0.5 mm and 1.0 mm, or the diameter of the cylindrical section 193 can be between 2.0 mm and 5 mm.

[0128] The horizontal width d1 of the connecting section 192 is between 1 and 2 mm, the horizontal thickness d2 is between 0.5 and 1.5 mm, and the vertical height h1 of the notch 191 is between 1 and 3 mm. For example, the horizontal width of the connecting section 192 can be 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm or 2.0 mm, and the horizontal thickness of the connecting section 192 can be 0.5 mm, 0.6 mm, 0.8 mm, 0.9 mm, 1 mm, 1.2 mm, 1.3 mm, 1.4 mm and 1.5 mm. The vertical height of the notch 191 can be 1 mm, 1.5 mm, 2 mm, 2.5 mm and 3 mm, thereby improving the bearing capacity and compressive resistance of the connecting section 192.

[0129] The water purification device 1000 according to the embodiment of the present invention includes the shell assembly 100 of the above embodiment. Since the shell assembly 100 according to the embodiment of the present invention has high structural strength and small volume, the water purification device 1000 according to the embodiment of the present invention has high structural strength and small volume.

[0130] Reference Figure 19-Figure 23 A water purification device 1000 according to other embodiments of the present invention is described.

[0131] The present invention provides a water purification device 1000, which can be a water purifier, a water purification device 1000 or the like. Fig.19 Combination Fig.21 As shown, the middle frame 20 of the water purification equipment 1000 has two filter element cavities dd arranged side by side, that is, each hollow support column 22 defines a filter element cavity dd, and a water pump 71 is installed at one end of the vertical direction of the middle frame 20, and the length direction of the water pump 71 is the same as the horizontal direction of the middle frame 20, so the arrangement of the two is more compact, so that the overall volume of the water purification equipment 1000 can be set smaller.

[0132] See also Figures 19 to 21The present invention proposes a water purification device 1000, which includes a housing 10, and the housing 10 is placed in a vertical direction when the water purification device 1000 is in use, so the vertical direction of the housing 10 is consistent with the up and down direction of the space. The shape of the housing 10 is specifically set according to different needs. In the present application, the housing 10 includes a cylindrical housing 10, an upper cover (not shown) provided on the upper end of the housing 10, and a base 40 at the lower end, so that the housing 10, the upper cover and the base 40 form a housing space. Among them, the cross section of the housing 10 is set in an 8-shaped shape, that is, the two side plates with a longer width of the housing 10 are concave with arc grooves extending up and down, and the setting of the arc groove is first to strengthen the strength of the housing 10, and secondly to make the inner surface of the housing 10 form multiple arc transitions to achieve a better noise reduction effect. In addition, a middle frame 20 is installed in the housing space of the housing 10, and a filter element is installed in the middle frame 20, and then the filter element filters the incoming water.

[0133] Specifically for the middle frame 20, a filter cartridge cavity dd is provided on the middle frame 20, and one or more filter cartridge cavities dd may be provided. When multiple filter cartridge cavities dd are provided, the arrangement of the multiple filter cartridge cavities dd may be determined according to different requirements. In the present application, two filter cartridge cavities dd are provided on the middle frame 20, and the two filter cartridge cavities dd extend in the up-down direction and are arranged side by side, so that the arc groove on the housing 10 corresponds to the interval between the two filter cartridge cavities dd, so as to cooperate with the above-mentioned housing 10 to make the assembly more compact.

[0134] In addition, if Fig. 20 and Fig.21 As shown, a water pump 71 is installed in the housing 10, and the water pump 71 is installed horizontally at one end of the vertical direction of the middle frame 20. It should be explained here that the water pump 71 is placed horizontally, that is, the length direction of the water pump 71 is consistent with the horizontal direction of the middle frame 20, so it is equivalent to the middle frame 20 being placed vertically on the water pump 71, so that the internal space of the water purification equipment 1000 is compactly arranged to achieve a miniaturized setting. Among them, the water pump 71 can be installed at the upper end of the middle frame 20, or it can be installed at the lower end of the middle frame 20. In this application, it is preferred to install the water pump 71 at the lower end of the middle frame 20. Therefore, considering that the filter element of the present application is to be extracted from the upper end of the middle frame 20 when cleaning or replacing, if the water pump 71 is installed at the upper end of the middle frame 20, it will interfere with the removal of the filter element; in addition, the weight of the water pump 71 is heavy, so installing the water pump 71 at the lower end of the middle frame 20 can lower the overall center of gravity of the water purification equipment 1000 and achieve a stable placement effect.

[0135] In the technical solution of the present invention, the water purification device 1000 includes a housing 10, a middle frame 20 is vertically installed in the housing 10, and the middle frame 20 has two filter element chambers d set up horizontally. Secondly, a water pump 71 is also installed in the housing 10, and the water pump 71 is installed at the upper end or the lower end of the middle frame 20, and the water pump 71 is arranged horizontally, that is, the length direction of the water pump 71 is consistent with the horizontal direction of the middle frame 20, so that the assembly of the two is more compact, and the internal space of the water purification device 1000 is reasonably arranged to achieve a miniaturized setting.

[0136] In the above embodiment, the water pump 71 is preferably installed at the lower end of the middle frame 20. Specifically, the water pump 71 can be connected to the lower end of the middle frame 20, that is, the water pump 71 is connected to the middle frame 20; or, the water pump 71 is connected to the bottom of the outer shell 10 for fixation, and is located at the lower end of the middle frame 20. In these two methods, when the water pump 71 is connected to the middle frame 20, since the vibration generated by the water pump 71 when working is relatively large, directly connecting the water pump 71 to the middle frame 20 will cause a large transmission to the middle frame 20 and affect the filter element; when the water pump 71 is directly connected to the bottom of the outer shell 10, the vibration of the water pump 71 will also directly exceed the outer shell 10 and cause the overall shaking of the water purification equipment 1000 to be relatively large, and also cause relatively large noise to be generated. Therefore, in another embodiment, please refer to Fig. 22 The water purification device 1000 further includes a water pump housing 41, which is installed at the lower end of the middle frame 20 to enclose with the middle frame 20 to form an installation cavity, and the water pump 71 is installed in the installation cavity. Fig. 22 Combination Fig.23 The water pump housing 41 includes a base plate 41a and a surrounding plate 41b erected along the periphery of the base plate 41a, so that the water pump housing 41 has an upper opening, and the upper end of the water pump housing 41 is connected to the middle frame 20 to form a relatively closed cavity, or a completely closed cavity. The water pump 71 is installed in the installation cavity formed by the water pump housing 41 and is connected to the inner bottom surface of the water pump housing 41, thereby effectively increasing the vibration transmission resistance and noise transmission resistance of the water pump 71. In addition, it should be noted that the water pump housing 41 is located in the outer shell 10.

[0137] In order to further reduce the vibration propagation of the water pump 71, in another embodiment, see Fig. 22 The lower part of the water pump 71 is connected with a mounting seat 74, and the water pump 71 is mounted on the water pump housing 41 through the mounting seat 74. It is easy to understand that the mounting seat 74 is fixed to the inner surface of the water pump housing 41, and then the water pump 71 is supported by the mounting seat 74, which is equivalent to the water pump housing 41 supporting the water pump 71, so the mounting seat 74 can initially reduce the vibration of the water pump 71.

[0138] Furthermore, in order to achieve a better shock absorption effect, a plurality of shock-absorbing support pads 75 are provided on the mounting seat 74, and the plurality of shock-absorbing support pads 75 support the mounting seat 74. Therefore, when the water pump 71 is working, the shock-absorbing support pads 75 can further reduce the shock of the water pump 71 to reduce the vibration propagation of the water pump 71.

[0139] Considering that the water pump 71 generates vibrations during operation, the water inlet of the water pump 71 is prone to cracks and leakage, so please refer to Fig.23 In another preferred embodiment, a drainage hole 45 is provided on the bottom surface of the water pump housing 41, so that when the water pump 71 leaks, the liquid can be discharged through the drainage hole 45 on the water pump housing 41 to avoid the liquid interfering with the wires connecting the water pump 71.

[0140] In any of the above embodiments, since the water pump 71 is connected to the waterway plate 72, the waterway plate 72 is equipped with components such as a pressure switch 73, for details, refer to Fig.23 Therefore, when the water pump 71 is installed on the water pump housing 41, the water pump housing 41 will interfere with the installation of the waterway plate 72 and the pressure switch 73, thereby affecting the installation of the waterway plate 72 and the pressure switch 73. Fig. 22 and Fig.23 In this embodiment, a clearance gap a is provided on one side of the waterway plate 72 corresponding to the enclosure 41b of the water pump housing 41, so that the waterway plate 72 and the pressure switch 73 can be installed in the clearance gap a.

[0141] Furthermore, in order to reduce the influence of the opening of the clearance gap a on the overall noise reduction effect of the water pump housing 41, in another preferred embodiment, the water pump housing 41 is provided with a first cover plate (not shown in the figure), which covers the clearance gap a of the enclosure 41b and is detachably connected to the enclosure 41b. It is easy to understand that since the original parts such as the waterway plate 72 are placed at the clearance gap a, when the first cover plate covers the clearance gap a, the first cover plate itself has a certain accommodation position for the waterway plate 72 and other components to be accommodated, for example, the cover accommodation space is formed by the depression of the plate surface of the first cover plate, or the first cover plate is set with a certain curvature, so it can be surrounded at the clearance gap a to block the clearance gap a.

[0142] Before using the water purification device 1000, the air tightness of the water purification device 1000 is generally tested to prevent water leakage during use of the water purification device 1000. The general testing method is to fill the water pump 71 and each water path with test gas, and then use a test probe to approach the water inlet and outlet of the water pump 71 (such as Fig. 20As shown, the adjacent water inlet is set), and the connection port connecting the water circuit board 72 is tested to see if there is any air leakage. In this regard, based on the above embodiment, since the water pump housing 41 and the middle frame 20 cooperate to form a closed cavity for placing the water pump 71, when the inspector tests the air tightness of the water purification equipment 1000, it is necessary to open the water pump housing 41 and then move the monitoring head close to the flow path structure of the water pump 71, which is more troublesome. Therefore, please refer to Fig. 22 and Fig.23 In this embodiment, a first inspection port b is provided on the enclosure 41b of the water pump housing 41 for exposing the water inlet and the water outlet e of the water pump 71. When the inspector needs to inspect the water inlet and the water outlet e of the water pump 71, the inspector can directly insert the inspection head into the first inspection port b for inspection. Furthermore, in order to facilitate the inspector to perform air tightness inspection on the connection between the water pump 71 and the waterway plate 72, a second inspection port c is provided on the enclosure 42 for exposing the connection between the water pump 71 and the waterway plate 72. Therefore, when the inspector needs to inspect the connection between the water pump 71 and the waterway plate 72, the inspector can directly insert the inspection head into the second inspection port c for inspection.

[0143] Furthermore, the opening of the first inspection port b and the second inspection port c will affect the noise reduction ability of the water pump housing 41. Therefore, in another embodiment, the water pump housing 41 is provided to further include a first cover plate (not shown in the figure), the first cover plate covers the first inspection port b, and is detachably connected to the enclosure 42; and / or the water pump housing 41 further includes a second cover plate, the second cover plate covers the second inspection port c, and is detachably connected to the enclosure 41b. Preferably, the first inspection port b and the second inspection port c are both covered by a cover plate, so when the air tightness test of the water purification equipment 1000 is required, the first cover plate and the second cover plate are first disassembled to expose the area to be tested. After the test is completed, the first cover plate and the second cover plate are respectively closed corresponding to the first inspection port b and the second inspection port c, thereby avoiding the opening of the inspection port from affecting the noise reduction effect of the water pump housing 41.

[0144] There are many ways to disassemble and connect the first cover plate and the second cover plate, so they are not described in detail. And the disassembly methods are common knowledge in the field, so the disassembly methods that are easy to think of or obtained by reasonable reasoning by those skilled in the art are within the protection scope of this application.

[0145] Based on any of the above embodiments, please refer to Fig.19, further describing the shell 10 of the water purification device 1000, the shell 10 comprises a shell 10 with upper and lower openings, an upper cover plate covering the upper opening of the shell 10, and a base 40 covering the lower opening of the shell 10; wherein the shell 10 is arranged in a cylindrical shape. It should be explained that the shell 10, the upper cover plate and the base 40 enclose a closed cavity, the water pump shell 41 is installed in the cavity, and the water pump 71 is installed in the water pump shell 41, and then the noise generated by the water pump 71 is first blocked and reduced by the water pump shell 41, and then blocked by the shell 10, thereby reducing the working noise of the water purification device 1000. It should also be explained that the shell 10 is arranged in a cylindrical shape, which can be understood as the surface of the shell 10 is smoothly transitioned in its circumferential direction, that is, each corner in the circumferential direction is rounded, so it can achieve a better noise reduction effect.

[0146] Furthermore, in order to make the overall assembly of the water purification equipment 1000 more compact and reduce the overall volume. Therefore, in this embodiment, arc grooves extending in the up-down direction are concavely provided on the opposite side surfaces of the outer shell 10, and the two arc grooves are provided at the intervals between the two filter element cavities d. This is equivalent to the outer shell 10 being wrapped around the outside of the middle frame 20 to achieve the above purpose, and the shape of the water pump housing 41 is similar to that of the outer shell 10. It can be said that the cross-sections of the two are arranged in an 8-shape, so it is easy to assemble. In addition, arc grooves are provided on the opposite side surfaces of the outer shell 10, one of which increases the overall use strength of the outer shell 10, and the other plays an auxiliary effect on the noise reduction effect, thereby increasing the noise reduction ability of the outer shell 10.

[0147] In a specific embodiment of the present invention, referring to Fig.18 and Fig. 20 As shown, the water purification device includes: an outer shell 10; a middle frame 20, which is installed in the outer shell 10, and the middle frame 20 has a bottom plate and two filter element cavities d arranged side by side on the bottom plate; a water pump housing 41, which is located in the outer shell 10 and is connected to the middle frame 20 to enclose a water pump installation cavity with the bottom plate of the middle frame 20; a water pump 71, which is installed in the water pump installation cavity.

[0148] Reference Fig. 22 and Fig.23 The water pump housing 41 includes a base plate 41a and a panel 41b erected on the upper surface of the base plate, wherein the panel 41b has a plurality of corners in its circumferential direction, and the corners of the panel are rounded. A sound-absorbing layer is disposed on the inner surface of the panel 41b.

[0149] Reference Fig. 22 and Fig.23, the water pump 71 is connected to a waterway plate 72; a clearance gap a is provided on one side of the enclosure 41b, and the waterway plate 72 is placed at the clearance gap a. The enclosure 41b is provided with a first inspection port b for exposing the water inlet and outlet of the water pump 71. The enclosure 41b is provided with a second inspection port c for exposing the connection port between the water pump 71 and the waterway plate 72.

[0150] The water pump housing 41 further includes a first cover plate (not shown), which covers the gap a of the enclosure and is detachably connected to the enclosure 41b. The water pump housing 41 further includes a second cover plate (not shown), which covers the first detection port b and is detachably connected to the enclosure 41b; and / or the water pump housing 41 further includes a third cover plate (not shown), which covers the second detection port c and is detachably connected to the enclosure 41b.

[0151] The housing 10 is a shell having upper and lower openings, an upper cover (not shown) covering the upper opening of the shell, and a base 40 covering the lower opening of the shell; the shell is cylindrical.

[0152] The two opposite side surfaces of the shell are inwardly concavely provided with arc grooves extending in the up-down direction, and the two arc grooves are arranged at the intervals corresponding to the two filter element cavities d.

[0153] Reference Figure 19-26 A water purification device 1000 according to other embodiments of the present invention is described.

[0154] The present invention proposes a water purification device 1000, which is a device such as a water purifier or a water purifier. The water pump of the water inlet is installed through the water pump shell 41 in the housing, so that the noise propagation of the water pump is blocked in the small installation cavity of the water pump shell 41, and at the same time, the water pump shell 41 and the housing are used to double-layer block the noise, so as to effectively reduce the noise radiation of the water pump, thereby achieving a good noise reduction effect.

[0155] See also Figures 19 to 21The present invention proposes a water purification device 1000, which includes a shell 10, and the shape of the shell 10 is set according to different needs. In the present application, the shell 10 includes a cylindrical shell 10, an upper cover (not shown) provided at the upper and lower ends of the shell 10, and a base 40, whereby the shell 10, the upper cover and the base 40 are assembled to form an accommodating space. Among them, the cross-section of the shell 10 is arranged in an 8-shaped shape, that is, the two side panels with a longer width of the shell 10 are concave with arc grooves extending up and down, and the setting of the arc groove is first to strengthen the strength of the shell 10, and secondly, to form a plurality of arc surface transitions on the inner surface of the shell 10 to achieve a better noise reduction effect. In addition, a middle frame 20 is installed in the accommodating space of the shell 10, and a filter element is installed in the middle frame 20, and the filter element filters the incoming water.

[0156] Specifically, for the middle frame 20, a filter cartridge cavity d is provided on the middle frame 20, and the filter cartridge cavity d may be provided with one or more. When multiple filter cartridge cavities d are provided, the arrangement of the multiple filter cartridge cavities d may be determined according to different requirements. In the present application, two filter cartridge cavities d are provided on the middle frame 20, and the two filter cartridge cavities d extend in the up-down direction and are arranged side by side, so that the arc groove on the housing 10 corresponds to the interval between the two filter cartridge cavities d, so as to cooperate with the above-mentioned housing 10 to make the assembly more compact.

[0157] The lower end of the middle frame 20 is provided with a water pump housing 41, which is enclosed with the bottom plate of the middle frame 20 to form an installation cavity, in which a water pump 71 is installed. It is easy to understand that the water pump housing 41 is installed at the bottom of the middle frame 20, and then the water pump 71 is installed in the water pump housing 41. Firstly, since the accommodation space formed is small, when the water pump 71 is installed in the water pump housing 41, the propagation resistance of the noise generated by the water pump 71 in the small space is large, and the sound wave itself will interfere, so the noise reduction effect can be initially achieved; secondly, since the water pump housing 41 is installed in the outer shell 10, and the water pump 71 is installed in the water pump housing 41, the noise generated by the water pump 71 is hindered by the double shell plate (water pump housing 41 and outer shell 10), which greatly increases the propagation resistance of the noise, thereby achieving an excellent noise reduction effect. It is also worth mentioning that the shape of the water pump housing 41 can be set according to different requirements. In this embodiment, in order to match the shape of the housing 10, it is preferred to set the cross-sectional shape of the water pump housing 41 to correspond to the housing 10. The connection between the water pump housing 41 and the middle frame 20 can be a fixed connection or a detachable connection, such as welding, bonding, plugging, clamping, screw connection or bolt connection.

[0158] The technical solution of the present invention is to set a water pump housing 41 at the bottom of the middle frame 20, and the water pump housing 41 is located in the outer shell 10, and then install the water pump 71 in the water pump housing 41. Therefore, during the operation of the water pump 71, the noise generated is initially hindered by the small space of the water pump housing 41, so as to increase the propagation resistance of the noise. At the same time, part of the noise that passes through the water pump housing 41 is again hindered by the outer shell 10 during the propagation process, which further reduces the propagation of the noise. Therefore, under the double-layer noise blocking effect of the water pump housing 41 and the outer shell 10, the noise generated by the operation of the water pump 71 is isolated, so as to achieve an excellent noise reduction effect.

[0159] For further information, see Fig. 22 and Fig.23 The water pump housing 41 includes a base plate 41a and a panel 41b erected on the upper surface of the base plate 41a, wherein the panel 41b has a plurality of corners in its circumferential direction, and the corners of the panel 41b are chamfered. It is easy to understand that the chamfered corners of the panel 41b can achieve a better sound-absorbing effect than the straight corners.

[0160] In another embodiment, in order to achieve a better sound-absorbing effect, a sound-absorbing layer is provided on the inner surface of the enclosure 41b. Therefore, the sound-absorbing layer provided can absorb the noise generated by the water pump 71 to achieve a better noise reduction effect. Among them, the sound-absorbing layer can be a sound-absorbing cotton setting or a perforated plate setting; the perforated plate is explained, and the perforated plate is a microporous plate setting, that is, a plurality of sound-absorbing holes are provided on the plate body, and the aperture of the sound-absorbing hole and the hole spacing between each sound-absorbing hole are specifically determined according to the wavelength of the noise generated by the water pump 71. It is also worth mentioning that the perforated plate can be formed by opening a sound-absorbing hole on the base plate 41a of the water pump housing 41, or it can be a perforated plate separately provided inside the water pump housing 41. Compared with the latter, the separately provided perforated plate and the enclosure 41b are spaced to form a double-layer sound insulation board setting, so it can achieve a better sound-absorbing effect.

[0161] In another embodiment, see Fig.19 and Fig. 20 Since the water pump 71 is connected to the waterway plate 72, and the waterway plate 72 is installed with components such as the pressure switch 73, when the water pump 71 is installed on the water pump housing 41, the water pump housing 41 will interfere with the installation of the waterway plate 72 and the pressure switch 73, thereby affecting the installation of the waterway plate 72 and the pressure switch 73. Furthermore, in this embodiment, a clearance gap a is provided on one side of the enclosing plate 41b corresponding to the waterway plate 72, so that the waterway plate 72 and the pressure switch 73 can be placed in the clearance gap a for installation.

[0162] Furthermore, in order to reduce the influence of the opening of the clearance gap a on the overall noise reduction effect of the water pump housing 41, in another preferred embodiment, the water pump housing 41 is provided with a first cover plate (not shown in the figure), which covers the clearance gap a of the enclosure 41b and is detachably connected to the enclosure 41b. It is easy to understand that since the original parts such as the waterway plate 72 are placed at the clearance gap a, when the first cover plate covers the clearance gap a, the first cover plate itself has a certain accommodation position for the waterway plate 72 and other components to be accommodated, for example, the cover accommodation space is formed by the depression of the plate surface of the first cover plate, or the first cover plate is set with a certain curvature, so it can be surrounded at the clearance gap a to block the clearance gap a.

[0163] Before using the water purification device 1000, the air tightness of the water purification device 1000 is generally tested to prevent water leakage during use of the water purification device 1000. The general testing method is to fill the water pump 71 and each water path with test gas, and then use a test probe to approach the water inlet and outlet of the water pump 71 (such as Fig. 20 As shown, the adjacent water inlet is set), and the connection port connecting the water circuit board 72 is tested to see if there is any air leakage. In this regard, based on the above embodiment, since the water pump housing 41 and the middle frame 20 cooperate to form a closed cavity for placing the water pump 71, when the inspector tests the air tightness of the water purification equipment 1000, it is necessary to open the water pump housing 41 and then move the monitoring head close to the flow path structure of the water pump 71, which is more troublesome. Therefore, please refer to Fig. 22 and Fig.23 In this embodiment, a first inspection port b is provided on the enclosure 41b for exposing the water inlet and the water outlet e of the water pump 71, and when the inspector needs to inspect the water inlet and the water outlet e of the water pump 71, the inspector can directly insert the inspection head into the first inspection port b for inspection. Furthermore, in order to facilitate the inspector to perform air tightness inspection on the connection port between the water pump 71 and the waterway plate 72, a second inspection port c is provided on the enclosure 41b for exposing the connection port between the water pump 71 and the waterway plate 72, and when the inspector needs to inspect the connection port between the water pump 71 and the waterway plate 72, the inspector can directly insert the inspection head into the second inspection port c for inspection.

[0164] Further, refer to Fig. 22 and Fig.23, since the opening of the first inspection port b and the second inspection port c will affect the noise reduction ability of the water pump housing 41. Therefore, in another embodiment, the water pump housing 41 is provided to further include a second cover plate (not shown in the figure), the second cover plate covers the first inspection port b, and is detachably connected to the enclosure 41b; and / or the water pump housing 41 further includes a third cover plate, the third cover plate covers the second inspection port c, and is detachably connected to the enclosure 41b. Preferably, the first inspection port b and the second inspection port c are both covered by a cover plate, so when it is necessary to conduct an air tightness test on the water purification equipment 1000, the second cover plate and the third cover plate are first removed to expose the area to be tested. After the test is completed, the second cover plate and the third cover plate are respectively closed corresponding to the first inspection port b and the second inspection port c, thereby avoiding the opening of the inspection port affecting the noise reduction effect of the water pump housing 41.

[0165] There are many ways to disassemble and connect the second cover plate and the third cover plate, so they are not described in detail. And the disassembly methods are common knowledge in the field, so the disassembly methods that are easy to think of or obtained by reasonable reasoning by those skilled in the art are within the protection scope of this application.

[0166] Based on any of the above embodiments, the housing assembly 100 of the water purification device 1000 is further described. Fig.19 The shell assembly 100 includes a shell 10 with upper and lower openings, an upper cover covering the upper opening of the shell 10, and a base 40 covering the lower opening of the shell 10; wherein the shell 10 is cylindrical. It should be explained that the shell 10, the upper cover and the base 40 enclose a closed cavity, the water pump shell 41 is installed in the cavity, and the water pump 71 is installed in the water pump shell 41, so that the noise generated by the water pump 71 is first blocked and reduced by the water pump shell 41, and then blocked by the shell 10, thereby reducing the working noise of the water purification equipment 1000. It should also be explained that the shell 10 is cylindrical, which can be understood as the surface of the shell 10 is smoothly transitioned in its circumferential direction, that is, each corner in the circumferential direction is rounded, so it can achieve a better sound-absorbing effect.

[0167] Furthermore, in order to make the overall assembly of the water purification equipment 1000 more compact and reduce the overall volume. Therefore, in this embodiment, arc grooves extending in the up-down direction are provided inwardly on the opposite side surfaces of the outer shell 10, and the two arc grooves are provided at the intervals between the two filter element cavities d. This is equivalent to the outer shell 10 being wrapped around the outside of the middle frame 20 to achieve the above purpose, and the shape of the water pump housing 41 is similar to that of the outer shell 10. It can be said that the cross-sections of the two are arranged in an 8-shape, so it is easy to assemble. In addition, arc grooves are provided on the opposite side surfaces of the outer shell 10, one of which can increase the overall use strength of the outer shell 10, and the other has an auxiliary effect on the noise reduction effect, thereby increasing the noise reduction ability of the outer shell 10.

[0168] In a specific embodiment of the present invention, referring to Figure 18-Figure 23 The water purification device 1000 comprises: a housing 10 having a vertical direction; a middle frame 20 vertically mounted in the housing 10, the middle frame 20 having two filter element chambers d arranged side by side in a transverse direction; and a water pump 71 transversely mounted at one end of the middle frame 20 in a vertical direction. Preferably, the water pump 71 is mounted below the middle frame 20.

[0169] Preferably, the water purification device 1000 further includes a water pump housing 41, wherein the water pump housing 41 is installed at the lower end of the middle frame to enclose with the middle frame 20 to form an installation cavity, and the water pump 71 is installed in the installation cavity.

[0170] Preferably, a mounting seat 74 is connected to the lower part of the water pump 71, and the water pump 71 is mounted on the water pump housing 41 through the mounting seat 74. Preferably, a plurality of shockproof support pads 75 are provided on the mounting seat 74, and the plurality of shockproof support pads 75 support the mounting seat 74.

[0171] Preferably, a drainage hole is formed on the bottom surface of the water pump housing 41. Preferably, the water pump is connected to a waterway plate 72; the water pump housing 41 includes a base plate 41a, and a surrounding plate 41b erected along the periphery of the base plate 41a, and a clearance gap a is formed on one side of the surrounding plate 41b, and the waterway plate 72 is placed at the clearance gap a.

[0172] Preferably, the enclosure 41b is provided with a first inspection port b for exposing the water inlet and outlet of the water pump 71; and / or the enclosure 41b is provided with a second inspection port c for exposing the connection port between the water pump 71 and the waterway plate 72.

[0173] Preferably, the housing 10 is a shell with upper and lower openings, an upper cover covering the upper opening of the shell, and a base 40 covering the lower opening of the shell; wherein the shell is cylindrical. Preferably, two opposite sides of the shell are concavely provided with arc grooves extending in the up-down direction, and the two arc grooves are provided at the intervals between the two filter element cavities.

[0174] Reference Fig.19 , Figure 24-Figure 31 A water purification device 1000 according to other embodiments of the present invention is described.

[0175] The present invention provides a water purification device 1000, which is a device such as a water purifier or a water purifier. The water pump power line of the water purification device 1000 is wound through the wire harness groove on the base plate 41a of the water pump housing 41, thereby improving the fixing strength of the water pump power line and preventing it from being pulled away from the water pump.

[0176] The present invention discloses a water purification device 1000, please refer to Fig.19 , the water purification equipment 1000 includes a shell 10, and the shape of the shell 10 is specifically set according to different needs. In the present application, the shell 10 includes a cylindrical shell 10 with upper and lower openings, an upper cover (not shown) provided on the shell 10 and provided on the lower opening of the shell 10, and a base 40 provided on the lower opening of the shell 10, so that the shell 10, the base 40 and the upper cover are assembled to form an accommodating space. Among them, the cross-section of the shell 10 is arranged in an 8-shaped shape, that is, the two side panels with a longer width of the shell 10 are concave with arc grooves. The setting of the arc groove is first to strengthen the strength of the shell 10, and secondly, to form a plurality of arc transitions on the inner surface of the shell 10 to achieve a better noise reduction effect. In addition, a middle frame 20 is installed in the accommodating space of the shell 10, and a filter element is installed in the middle frame 20, and the filter element filters the incoming water.

[0177] Specifically, for the middle frame 20, a filter cartridge cavity d is provided on the middle frame 20, and the filter cartridge cavity d may be provided with one or more. When multiple filter cartridge cavities d are provided, the arrangement of the multiple filter cartridge cavities d may be determined according to different requirements. In the present application, two filter cartridge cavities d are provided on the middle frame 20, and the two filter cartridge cavities d extend in the up-down direction and are arranged side by side, thereby the corresponding housing 10 can be matched more compactly.

[0178] In addition, a water pump housing 41 is installed at the lower end of the middle frame 20, and the water pump housing 41 is located between the middle frame 20 and the base 40. The water pump housing 41 and the middle frame 20 enclose an installation cavity, and a water pump is installed in the installation cavity, which is equivalent to enclosing the water pump in a smaller space to reduce the noise propagation of the water pump. The water pump housing 41 includes a base plate 41a, and a panel 41b erected along the periphery of the base plate 41a, and the panel 41b is fixed to the middle frame 20, wherein the fixing method is preferably a detachable fixing method, such as screws, clamping, clamping or bonding. A wiring groove is provided on the outer side of the panel 41b, and a cable tie groove 410 is provided on the bottom surface of the base plate 41a, and then the power cord of the water pump 71 passes through the wiring groove of the panel 41b to the cable tie groove 410 for position fixing and then passes through the housing 10.

[0179] For a detailed description of the cable trough 410, please refer to Fig.24 and Fig.25, the wire harness groove is arranged on the bottom surface of the water pump housing 41, and the wire harness groove can be directly formed by the convex arrangement of the bottom surface of the water pump housing 41, or it can be a groove body arranged on the bottom surface of the water pump housing 41. Among them, in order to play the role of wiring, to prevent the wires from being easily pulled after being installed in the wiring harness groove 410, because the wiring harness groove 410 is arranged in a bent setting, the wiring harness groove 410 has at least one bend, and then the wiring harness groove 410 increases the sliding resistance of the wire through the bend to achieve the wiring harness effect. Of course, in order to achieve a better wiring harness effect, it is preferred to set the wiring harness groove 410 to have multiple bends. It is also worth mentioning that in order to protect the water pump wires and prevent them from being squeezed and damaged by the sharp corners of the wiring harness groove 410 during the process of circling the wiring harness groove 410, it is preferred that the bend of the wiring harness groove 410 has a rounded transition.

[0180] During the specific winding process, the power cord of the water pump 71 extends out from the water pump housing 41, and then goes down through the wiring groove on the enclosure 41b of the water pump housing 41. It is worth mentioning here that the wire inlet M of the wire trough 410 is opposite to the wire outlet N of the wire trough. Therefore, after the water pump wire is routed downward from the wire trough to the wire trough 410, it is wound and fixed through the wire trough 410, and then passes through the wire outlet N of the wire trough 410 to pass through the housing 10 and connect to an external power source.

[0181] It is also worth mentioning that, since the water pump housing 41 of the present application is located inside the housing 10, that is, there is a base 40 below the water pump housing 41 for covering, the water pump housing 41 is concealed. Therefore, compared with the water pump power cord of the existing water purification device 1000 fixed at the bottom of the housing 10, it is effectively prevented that the water pump power cord is scratched by external objects during use or transportation of the water purification device 1000, thereby interfering with or damaging the water pump power cord.

[0182] The technical solution of the present invention is to provide a water pump housing 41 at the lower end of the middle frame 20, and then the water pump housing 41 and the middle frame 20 enclose a mounting cavity for the water pump to be installed, which is equivalent to enclosing the water pump in a smaller space to reduce the noise propagation of the water pump. In addition, a cable trough 410 is provided on the bottom surface of the water pump housing 41, and the cable trough 410 is bent, so when the water pump power line passes through the cable trough 410 and then extends out of the housing 10, even if the water pump power line is subjected to external tension, it is difficult to slide and cause the connection between the water pump power line and the water pump to be detached.

[0183] On the basis of the above-mentioned embodiment, the cable trough 410 is bent. If the bending angle of the cable trough 410 is large, the cable bundling effect of the trough is poor. If the bending angle of the cable trough 410 is small, the water pump wire is easily damaged during the detour. Therefore, preferably, the bending angle of the bending part of the cable trough 410 is set to 85°~125°, for example, the bending angle is: 85°, 90°, 95°, 100°, 105°, 110°, 113° or 120°, etc. Of course, it is worth mentioning that since the cable trough 410 is preferably provided with multiple bending parts in the present application, it can be understood that the bending angle of each bending part is preferably within the above-mentioned value range.

[0184] It is also worth mentioning that in order to protect the water pump wires and prevent them from being squeezed and damaged by the sharp corners of the wire harness trough 410 during the process of routing the wire harness trough 410, it is preferred that the bends of the wire harness trough 410 have rounded transitions.

[0185] In a preferred embodiment, the cable trough 410 includes a first trough section 411, a second trough section 412, a third trough section 413 and a fourth trough section 414 connected in sequence, and a bend of the cable trough 410 is formed by an angle between each trough section. In the present application, the angle between each trough section is particularly set to 90°. However, it should be noted that the connection angle between the first trough section 411, the second trough section 412 and the third trough section 413 connected in sequence is 90°, wherein the first trough section 411 and the third trough section 413 can be located on the same side of the second trough section 412, or can be located on opposite sides of the second trough section 412. Similarly, the connection angle between the second trough section 412, the third trough section 413 and the fourth trough section 414 connected in sequence is 90°, at which time the second trough section 412 and the fourth trough section 414 can be located on the same side of the third trough section 413, or can be located on opposite sides of the second trough section 412. Considering that, in order to achieve a better beam-binding effect, in this embodiment, please refer to Fig.28 Preferably, the first slot section 411 and the third slot section 413 extend toward the opposite sides of the second slot section 412 respectively, and the second slot section 412 and the fourth slot section 414 extend toward the opposite sides of the third slot section 413 respectively, so as to achieve the above-mentioned better wiring bundling effect.

[0186] It is also worth mentioning that in order to protect the water pump wires and prevent them from being squeezed and damaged by the sharp corners of the wire harness trough 410 during the process of routing the wire harness trough 410, it is preferred that the angles between the groove sections are chamfered.

[0187] In another embodiment, please continue to refer to Fig.25, the outlet N of the cable trough 410 is configured as a constricted opening. It is easy to understand that the outlet N of the cable trough 410 is configured as a constricted opening, so that when the water pump power cord is installed in the cable trough 410, the notch of the cable trough 410 can clamp the water pump power cord, and then during the use of the water purification device 1000, the water pump power cord is not easily pulled or loosened. Of course, it is also preferred to set the inlet M of the cable trough 410 to be a constricted opening to further enhance the fixing strength of the water pump power cord.

[0188] In yet another embodiment, see Fig.26 and Fig. 27 , a first wire clamping structure 420 is provided on the groove wall of the cable trough 410, and the first wire clamping structure 420 is located in the outlet N of the cable trough 410. It is easy to understand that for the same reason as the previous embodiment, in order to enhance the fixing strength of the water pump power cord, it is not easy to be pulled or loosened. Therefore, in this embodiment, a first wire clamping structure 420 is provided at the outlet N of the cable trough 410, so the water pump power cord installed at the outlet N of the cable trough 410 is clamped and fixed by the first wire clamping structure 420. Of course, the first wire clamping structure 420 can also be provided in the inlet of the cable trough 410 at the same time, thereby further enhancing the fixing strength of the water pump power cord. Among them, there are many ways to set the first wire clamping structure 420, for example: a clamping point protruding inward from the groove wall of the cable trough 410; or a glue point coated on the groove wall of the cable trough 410; or a clamp bonded to the groove wall of the cable trough 410, etc. In this embodiment, the first wire clamping structure 420 is preferably provided as a glue point on the groove wall.

[0189] Further, on the basis of the previous embodiment, a plurality of second wire clamping structures 430 are also provided on the groove wall of the cable trough 410, and the plurality of second wire clamping structures 430 are spaced apart in the cable trough 410. It is easy to understand that a plurality of spaced apart second wire clamping structures 430 are also provided on the groove wall of the cable trough 410, so when the water pump power cord is placed in the cable trough 410, the part of the wire body accommodated in the cable trough 410 can be clamped by the cooperation of the first wire clamping structure 420 and the second clamping, thereby not only preventing the water pump power cord from being easily pulled, but also preventing the water pump power cord from slipping out of the cable trough 410. Among them, the setting method of the second wire clamping structure 430 can also refer to the setting method of the first wire clamping structure 420. In this embodiment, the second wire clamping structure 430 is preferably a glue point coated on the groove wall of the cable trough 410.

[0190] In another embodiment, see Fig.28 and Fig.29, a rubber strip 440 is provided on at least one groove wall of the cable trough 410, and the rubber strip 440 is fixed to the groove wall of the cable trough 410 and extends along the extension of the cable trough 410. It is easy to understand that the rubber strip 440 is provided on the groove wall of the cable trough 410, so when the water pump power cord is accommodated in the cable trough 410, the rubber strip 440 protruding from the groove wall of the cable trough 410 clamps the water pump power cord to enhance the fixing strength of the water pump power cord. Among them, the setting mode of the rubber strip 440 can be a continuous rubber strip 440, or it can be an intermittently set rubber strip 440. In addition, the rubber strip 440 can be provided on one side groove wall of the cable trough 410, or the rubber strip 440 can be provided on both groove walls of the cable trough 410.

[0191] In yet another embodiment, see Fig.30 and Fig.31 The cable trough 410 has a notch opposite to the bottom of the trough, and the edge of the notch protrudes inwardly with a limiting protrusion 450. Specifically, the limiting protrusion 450 is formed by the edge of the notch protruding inwardly, and the thickness of the limiting protrusion 450 is small so as to have a certain deformation capacity. Therefore, when the water pump power cord is placed in the cable trough 410, the water pump power cord first presses the limiting protrusion 450 to bend and deform toward the bottom of the trough, and then when the water pump power cord is accommodated in the cable trough 410, the limiting protrusion 450 returns to its original state to limit the water pump power cord in the cable trough 410 to prevent it from falling out.

[0192] Based on any of the above embodiments, please refer to Fig.26 , Fig.28 and Fig.30 , the bottom surface of the water pump housing 41 is also provided with a wire fixing structure 460, and the wire fixing structure 460 is provided adjacent to the wire outlet N. It is easy to understand that, since the external power line of the water pump power line extending from the wire outlet N of the wire trough 410 is outside the housing 10, when the part of the wire body extending outside the housing 10 is subjected to tension, the water pump power line will be pulled out of the wire outlet N of the wire trough 410, causing the wires in the entire wire trough 410 to be detached. Therefore, in this embodiment, the wire outlet N adjacent to the wire trough 410 is provided with a wire fixing structure 460, and the wire body at the wire outlet N of the wire trough 410 is fixed to avoid the above-mentioned problem.

[0193] There are many ways to set the wire fixing structure 460, as long as the water pump power line can be fixed. Specifically in the embodiment, the wire fixing structure 460 includes a wire fixing plate, the opposite ends of the wire fixing plate are fixed to the surface of the water pump housing 41, and the plate body of the wire fixing plate and the surface of the water pump housing 41 are surrounded to form a wire fixing through hole. The wire fixing plate and the water pump housing 41 are detachably connected, and in this embodiment, a screw connection is adopted, and then when fixing the wire, it is only necessary to press the wire fixing plate onto the water pump power line, and then fix the two ends with screws.

[0194] In a specific embodiment of the present invention, referring to Figure 18-Figure 30 The water purification device 1000 includes: an outer shell, the outer shell having a base 40; a middle frame 20, installed in the outer shell 10; a water pump shell 41, installed at the lower end of the middle frame 20 to enclose with the middle frame 20 to form an installation cavity, and a water pump 71 is installed in the installation cavity; the water pump shell 41 is located between the middle frame 20 and the base 40 of the outer shell 10; the bottom surface of the water pump shell 41 is provided with a cable groove 410, and the cable groove 410 is bent.

[0195] Preferably, the cable duct 410 has a plurality of bends.

[0196] Preferably, the bending angle of the bending portion of the cable trough 410 is 85° to 125°.

[0197] Preferably, the cable trough 410 includes a first trough section 411, a second trough section 412, a third trough section 413 and a fourth trough section 414 which are connected in sequence;

[0198] The first slot section 411 and the third slot section 413 extend toward opposite sides of the second slot section 412 respectively;

[0199] The second slot section 412 and the fourth slot section 414 extend toward two opposite sides of the third slot section 413 , respectively.

[0200] Preferably, the bending part of the cable tie slot 410 is rounded.

[0201] Preferably, the cable duct 410 has a cable outlet, and the cable outlet of the cable duct 410 is configured to be constricted.

[0202] Preferably, the cable trough 410 has a cable outlet;

[0203] A first wire-holding structure 420 is disposed on the wall of the wire-holding trough 410 . The first wire-holding structure 420 is located in the wire outlet of the wire-holding trough 410 .

[0204] Preferably, a plurality of second wire-holding structures 430 are further disposed on the groove wall of the wire-holding groove 410 , and the plurality of second wire-holding structures 430 are distributed in the wire-holding groove at intervals.

[0205] Preferably, the first wire-holding structure 420 and the second wire-holding structure 430 are glue dots coated on the wall of the wire-binding slot.

[0206] Preferably, a rubber strip 440 is disposed on at least one groove wall of the cable trough 410 . The rubber strip 440 is fixed to the groove wall of the cable trough 410 and extends along an extended area of ​​the cable trough 410 .

[0207] Preferably, the cable harness slot 410 has a slot opening opposite to the slot bottom, and a limiting protrusion 450 is protruded inwardly from an edge of the slot opening.

[0208] Preferably, the cable trough 410 has a cable outlet;

[0209] A wire fixing structure 460 is also provided on the bottom surface of the water pump housing, and the wire fixing structure 460 is arranged adjacent to the wire outlet.

[0210] Preferably, the wire fixing structure 460 includes a wire fixing plate, opposite ends of which are fixed to the surface of the water pump housing 41 , and a plate body of the wire fixing plate and the surface of the water pump housing 41 are surrounded to form a wire fixing through hole.

[0211] Preferably, the middle frame 20 has two filter element cavities d arranged in parallel.

[0212] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A middle frame for a water purification device, characterized in that: include: Connecting base shell; Two or more hollow support columns, the connecting base shell connects the two or more hollow support columns together; The hollow support columns extend in the vertical direction to form columnar filter core cavities arranged in parallel; The ratio between the diameter D of the filter element cavity and the height H of the middle frame is less than 1 / 2; The shortest distance L between two adjacent edges of the columnar filter core cavities is greater than 1 / 6 of the smallest filter core cavity diameter D1 in the hollow support column.

2. The middle frame for water purification equipment according to claim 1, characterized in that: A structural reinforcement is provided between two or more adjacent hollow support columns, and two ends of the structural reinforcement are respectively connected to the outer circumferential surfaces of the two hollow support columns.

3. The middle frame for water purification equipment according to claim 1, characterized in that: An interference portion is provided on the outer surface of the hollow support column, and the interference portion is concave or convex relative to the outer surface of the hollow support column.

4. The middle frame for water purification equipment according to claim 2, characterized in that: The structural reinforcement and the hollow support column are provided with at least one reinforcement rib.

5. The middle frame for water purification equipment according to claim 4, characterized in that: An interference portion is provided on the outer surface of the hollow support column, and the reinforcing rib is parallel to the interference portion.

6. The middle frame for water purification equipment according to claim 3, characterized in that: The cross section of the interference portion in the longitudinal direction is V-shaped.

7. The middle frame for water purification equipment according to claim 3, characterized in that: The interference portion comprises an upward segment and a downward segment, at least one of the upward segment and the downward segment extends toward one side of the center direction of the hollow support column, and an angle α between the upward segment and the downward segment is between 120-180°.

8. The middle frame for water purification equipment according to claim 7, characterized in that: The inclination angle of the upward segment relative to the vertical direction is greater than the inclination angle of the downward segment relative to the vertical direction, wherein the angle between the upward segment and the vertical direction is β, and β is between 110-180°.

9. The middle frame for water purification equipment according to claim 5, characterized in that: The interference portion surrounds the outer circumference of the hollow support column.

10. The middle frame for water purification equipment according to claim 1, characterized in that: The wall thickness of the hollow support column is between 0.5 and 3 mm.

11. A water purification device, characterized in that: A middle frame for a water purification device comprising any one of claims 1-10.

12. A water purification device according to claim 11, characterized in that: It comprises a shell, the middle frame is arranged in the shell, a water pump is also installed in the shell, and the water pump is installed at the upper end or the lower end of the middle frame.

13. A water purification device according to claim 12, characterized in that: It comprises a water pump housing, which is mounted on the lower end of the middle frame to enclose with the middle frame to form an installation cavity, and the water pump is installed in the installation cavity.

14. A water purification device according to claim 13, characterized in that: The water pump housing has an upper opening, so that the upper end of the water pump housing is connected to the middle frame to enclose a relatively closed cavity, or a completely closed cavity, and the water pump is installed in the installation cavity formed by the water pump housing.

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