Water inlet pipe assembly with inlet water flow dividing and cleaning functions and electric water heater

Abstract

A water inlet pipe assembly with inlet water flow dividing and cleaning functions comprises a water inlet pipe connector and a water inlet pipe, one end of the water inlet pipe is connected with the water inlet pipe connector, the other end of the water inlet pipe is bent towards one side and then extends for a certain distance along a straight line, the water inlet pipe comprises a water inlet inner pipe and a water inlet outer pipe, and the water inlet inner pipe comprises a bent section and a straight section; the tail end of the straight section is open, the water inlet outer pipe comprises a supporting bent pipe and a drainage hole pipe, the supporting bent pipe is arranged on the bent section in a sleeving mode, the drainage hole pipe is arranged on the straight section in a sleeving mode, a drainage hole is downwards formed in the drainage hole pipe, and the tail end of the drainage hole pipe is sealed through an obliquely-arranged curved surface. One part flows into a gap formed by the water inlet inner pipe and the drainage hole pipe from the water inlet, and the other part flows out from the tail end of the straight section and is reflected by the curved surface. The utility model has the advantages that cold water enters more stably to avoid disturbing a hot water layer, water in the inner container is circulated without dead angles to prevent scale and bacteria, and water sprayed from the drain hole is more uniform and powerful.

Description

Technical Field

[0001] The utility model relates to a water inlet pipe assembly for an electric water heater, in particular to a water inlet pipe assembly with an inlet water diversion and cleaning function and an electric water heater. Background Art

[0002] At present, most of the storage-type electric water heaters on the market use the arrangement of water inlet and outlet pipes with hot water coming out from the top of the inner tank and cold water coming in from the bottom, so as to reduce the disturbance of cold water on the upper hot water layer and prevent the phenomenon of alternating hot and cold water supply. In order to further reduce the disturbance caused by cold water, a water inlet pipe with a double-layer tube "M"-shaped flow channel or even a water inlet pipe with a water baffle / cap is usually used to slow down the rapid and uneven change of water temperature around the drainage hole caused by the rapid inflow of cold water, which affects the upper hot water layer. That is, the water flows upward through the inner tube, then flows downward along the gap between the inner tube and the outer tube, and finally discharges the cold water into the inner tank through the drainage hole arranged around the lower part of the outer tube. However, this type of water inlet pipe is generally inserted vertically into the inner tank. Therefore, the position of the water inlet pipe is either close to the left half of the tank or close to the right half of the tank. Therefore, it is difficult to take into account the water flow in the other half of the tank at the same time, which can easily lead to the hot water in the other half of the tank being unable to be quickly supplied to the upper layer, resulting in a "dead water zone" and causing scale deposition and bacterial growth. In addition, in actual applications, because the drainage hole is generally located at the top and far away from the bottom of the tank, it is difficult to circulate the water between the bottom of the tank and the drainage hole, which aggravates the problem. The above-mentioned water inlet pipe with a water baffle / cap will also lead to assembly difficulties, requiring manual labor to reach into the inner tank for operation, which is difficult and inefficient.

[0003] For example, the Chinese utility model patent with the authorization announcement number CN208312724U and titled "High-efficiency Electric Water Heater Anti-electric Wall" discloses: including: a joint assembly for connecting to the water heater and an external water supply pipe; a water inlet pipe connected to the joint assembly; and a square water retaining pipe connected to the joint assembly and sleeved on the water inlet pipe, the end of the square water retaining pipe is closed and a drainage gap is formed between the water inlet pipe, and a long strip of water outlet is opened on the side wall of the square water retaining pipe, and an inwardly concave water guide plate is provided at the water outlet, and the end of the water guide plate is fitted with the water inlet pipe. An inwardly concave water retaining plate is provided on the side of the water outlet opposite to the connection to the water guide plate, and a gap is left between the water retaining plate and the water inlet pipe. The water retaining plate is arranged in an arc shape. The technical solution described in this utility model can further divert the water flow downward by setting a water guide plate and a water baffle, thereby reducing the disturbance of high-level hot water by cold water, but it does not solve the problem of water flow injection amount and injection force for cleaning scale.

[0004] For another example, the Chinese utility model patent with the authorization announcement number CN216204367U, entitled "A water inlet pipe structure for a water heater", discloses: comprising an outer pipe (1) and an inner pipe (2), wherein one end of the outer pipe (1) is an open structure and the other end is closed; one end of the inner pipe (2) is provided with a water inlet structure (21) and the other end is provided with a water outlet structure (22); the end of the inner pipe (2) provided with the water outlet structure (22) is passed through the open structure of the outer pipe (1) and is sleeved in the outer pipe (1); the end of the outer pipe (1) provided with the open structure and the circumference of the end of the inner pipe (2) provided with the water inlet structure (21) are connected to each other. Sealed connection; a flow channel (3) is formed between the inner tube (2) and the outer tube (1); a plurality of flow guide ports (4) are arranged on the end of the outer tube (1) away from the closed end; the flow channel (3) connects the water outlet structure (22) and the flow guide port (4); a flow guide sleeve (5) is arranged on the peripheral surface of the end of the outer tube (1) away from the closed end; a plurality of flow guide grooves (6) are arranged on the flow guide sleeve (5); the plurality of flow guide grooves (6) are respectively connected to the plurality of flow guide ports (4); the flow guide grooves (6) are arranged downwardly inclined from the inner side of the flow guide sleeve (5) to the outer side of the flow guide sleeve (5). The technical solution of the utility model is prone to uneven water discharge due to different water flow forces corresponding to the flow channel (3) at different positions of the flow guide grooves (6); and the effect of cleaning scale is average.

[0005] For another example, the Chinese utility model patent with the authorization announcement number CN201715713U, entitled "A Slanted Pressure Relief Water Inlet Pipe", discloses: including a water inlet pipe body, wherein the upper end of the water inlet pipe body is a closed structure, and a plurality of water outlet holes are provided on the pipe wall of the water inlet pipe body, and the water outlet holes are inclined holes that are inclined downward from the inside to the outside along the pipe wall of the water inlet pipe body. The technical solution described in the utility model controls the water outlet direction through the inclined holes, but because only a "single-layer pipe" is used, it is impossible to use the advantages of a "double-layer pipe" to slow down the rapid and non-uniform changes in the surrounding water temperature caused by the rapid inflow of cold water, and the flow force is also different due to the flow path distance.

[0006] Therefore, based on the above problems, it is urgent to develop a water inlet pipe assembly that can ensure smooth water inflow without causing rapid and uneven changes in water temperature, clean the scale in the inner tank without dead ends, and ensure uniform cleaning force and high cleaning efficiency. Therefore, some manufacturers have begun to gradually try in these aspects. For example, a Chinese utility model patent with authorization announcement number CN207317241U and titled "A water inlet and outlet structure for a water heater" discloses: a water inlet device including an inner tank body (1) of a water heater and an inlet pipe (2) for cold water inlet, wherein one end of the inlet pipe is a water injection end connected to the outside, and the other end is a water inlet end (2a) extending into the inner tank body of the water heater, the pipe mouth of the inlet end (2a) of the inlet pipe is an upwardly facing beveled surface, and a surge plate (3) is also arranged above the inlet end (2a) of the inlet pipe, wherein the surge plate includes one end fixed to the inlet end (2a) of the inlet pipe and the other end extending out of the inlet end (2a) along the length direction of the inlet pipe, and the width of the surge plate (3) is greater than or equal to the diameter of the inlet pipe, so that the surge plate (3) can completely cover the inlet end (2a) of the inlet pipe. The technical solution described in the utility model uses a surge plate (3) to avoid the impact of hot water on the upper part of the inner tank, and can also prevent cold water from directly impacting the inner wall of the inner tank. However, it does not produce a positive effect on the more gentle entry of water into the inner tank, the distribution of water flow, and the cleaning of scale. Utility Model Content

[0007] In view of the deficiencies in the prior art, the utility model provides a water inlet pipe assembly and an electric water heater with a water diversion and cleaning function, which can more smoothly let in cold water to avoid disturbing the upper hot water layer, circulate the water in the inner tank completely without dead ends to prevent the accumulation of scale and the breeding of bacteria, and the water flow ejected from the drainage hole is more uniform and powerful, and the scale cleaning effect is better.

[0008] The utility model mainly adopts the following technical solutions:

[0009] A water inlet pipe assembly with an inlet water diversion and cleaning function comprises a water inlet pipe joint and a water inlet pipe, one end of the water inlet pipe is connected to the water inlet pipe joint, the other end of the water inlet pipe is bent to one side and then extends along a straight line for a distance, the water inlet pipe comprises an inner water inlet pipe and an outer water inlet pipe, the inner water inlet pipe comprises a bent section and a straight section, the straight section is provided with a water inlet facing upward, the end of the straight section is open, the outer water inlet pipe comprises a supporting elbow and a drainage hole pipe, the supporting elbow is sleeved on the bent section, the drainage hole pipe is sleeved on the straight section, the drainage hole pipe is provided with a drainage hole facing downward, the end of the drainage hole pipe is closed by an inclined curved surface, and water entering the inner water inlet pipe through the water inlet pipe joint, part of which flows from the water inlet into the gap formed by the inner water inlet pipe and the drainage hole pipe and then is discharged from the drainage hole, and the other part flows out from the end of the straight section and is reflected by the curved surface and then discharged from the drainage hole.

[0010] Wherein, the straight section is further provided with a diverter belt, the number of the water inlets is at least two, and the diverter belt is located between two adjacent water inlets.

[0011] The diverter belt is arc-shaped or ring-shaped, the inner circumference of the diverter belt is connected to the outer wall of the water inlet inner pipe, and the outer circumference of the diverter belt abuts against the inner wall of the drainage hole pipe.

[0012] Wherein, the curved surface gradually inclines toward one side of the drainage hole from top to bottom, and the curved surface is a concave curved surface.

[0013] Among them, the water inlet pipe joint is provided with a central channel connected to the water inlet inner pipe, and the water inlet pipe joint is also formed with an insertion sink extending along the central channel, and also includes an isolation sealing ring sleeved on the periphery of the top end of the water inlet inner pipe, and the isolation sealing ring is inserted into the insertion sink together with the top end of the water inlet inner pipe.

[0014] Among them, the water inlet pipe joint is also provided with a clamping sink extending along the insertion sink, and a step-like structure is formed between the insertion sink and the clamping sink. The cross-section of the isolation sealing ring is T-shaped. The isolation sealing ring includes a surrounding portion and a clamping portion. The surrounding portion is inserted into the insertion sink together with the top end of the water inlet inner pipe, and the clamping portion is clamped into the clamping sink.

[0015] Wherein, the top edge of the supporting elbow is folded outward to form a limiting edge, and the limiting edge is abutted against the end surface of the isolation sealing ring.

[0016] Wherein, the supporting bent pipe is also provided with a mounting ring at the end opposite to the limiting edge, and the drainage hole pipe is sleeved on the mounting ring.

[0017] The drainage hole pipe sleeved on the mounting ring overlaps the supporting elbow pipe for a distance in the radial direction.

[0018] Among them, the drainage hole includes a main drainage hole and a secondary drainage hole. The main drainage hole is opened at the lowermost side of the drainage hole tube and is arranged at equal intervals along the axial direction of the drainage hole tube. The secondary drainage holes are also arranged at equal intervals along the axial direction of the drainage hole tube and are located on both sides of the circumference of the main drainage hole.

[0019] Wherein, the secondary drainage hole gradually moves away from the end of the drainage hole tube as it moves away from the main drainage hole in the circumferential direction.

[0020] Wherein, the secondary drainage hole gradually approaches the mounting ring on a side close to the mounting ring as it moves away from the primary drainage hole in the circumferential direction.

[0021] Wherein, it also includes a filter screen, and the filter screen is installed on the upper side of the drainage hole pipe in an N-shaped buckle.

[0022] An electric water heater adopts the water inlet pipe assembly with the water inlet diversion and cleaning function.

[0023] Among them, it includes an inner tank, the water inlet pipe assembly is arranged at the bottom of the inner tank cavity, and the straight section extends along the bottom wall of the inner tank.

[0024] Wherein, it also includes a magnesium rod mounting seat, and a residue collection bag is arranged on the magnesium rod mounting seat.

[0025] According to the technical scheme described in the utility model, the following beneficial effects are achieved: the water inlet inner tube comprises a bent section and a straight section, and the bent water inlet inner tube provides conditions for the straight section to extend along the bottom of the inner tank of the electric water heater, which can prevent the formation of a "dead water zone" in a part of the inner tank, prevent the deposition of scale and the breeding of bacteria, and the downward-opening drainage hole also increases the water flow speed between the drainage hole and the bottom of the inner tank, preventing the deposition of scale in this area; the "double-layer tube" drainage method in which the water inlet inner tube and the drainage hole tube cooperate with each other makes the cold water inlet more uniform and smooth by reversing and buffering the water flow, thereby reducing the disturbance to the upper hot water layer; by arranging the water inlet and the open end of the straight section coexistently, the water in the water inlet inner tube is discharged. The effect of diversion is to make the water in the drainage holes be discharged evenly, so as to avoid too large differences in the injection amount and injection force at each part of the drainage holes due to different flow path distances, thereby affecting the cleaning effect of the injection water flow on scale; the relatively large amount of water flow at the end of the straight section is reflected by the curved surface again, which can be further buffered and reversed, thereby ensuring that no too much disturbance is caused during discharge; the inclined surface at the end of the drainage hole tube not only guides the water flow sprayed from the end of the straight section to the downward-opening drainage hole, but also ensures that the water flow will not generate concentrated impact force and will not lose water flow force when reflecting through the reflection of the tongue-shaped concave surface, so that the discharged cold water can more effectively clean the scale in the inner tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the water inlet pipe assembly with water diversion and cleaning function for this application.

[0027] Figure 2 for Figure 1 Schematic diagram of the structure of the middle water inlet pipe assembly from top view.

[0028] Figure 3 for Figure 2 Schematic diagram of the AA section structure.

[0029] Figure 4 for Figure 3 Enlarged view of part B in the middle.

[0030] Figure 5 This is a schematic diagram of the side structure of the water inlet pipe assembly with water diversion and cleaning function in this application.

[0031] Figure 6 for Figure 5 Schematic diagram of the CC cross-section structure.

[0032] Figure 7 This is a schematic diagram of the structure of the water inlet pipe assembly with water diversion and cleaning function after the filter is removed.

[0033] Figure 8 for Figure 7 Schematic diagram of the structure of the water inlet pipe assembly with water diversion and cleaning function after the drain hole pipe is removed.

[0034] Fig. 9 for Figure 8 Schematic diagram of the structure of the water inlet pipe assembly with water diversion and cleaning function after the supporting elbow is removed.

[0035] Fig.10 for Figure 1 Schematic diagram of the structure of the water inlet pipe assembly after the filter is removed from the bottom.

[0036] Fig.11 This is a schematic diagram of the structure of an electric water heater using the water inlet pipe assembly with the water inlet diversion and cleaning function of the present application.

[0037] 1 water inlet pipe joint 10 center channel, 100 plug-in sinker, 1000 clamping sinker, 2 water inlet pipe, 21 water inlet inner pipe, 210 water inlet, 211 bending section, 212 straight section, 22 water inlet outer pipe, 220 drainage hole, 2201 main drainage hole, 2202 secondary drainage hole, 221 supporting elbow, 2211 limiting edge, 222 drainage hole pipe, S-curved surface, 3 diversion belt, 4 isolation sealing ring, 41 surrounding part, 42 clamping part, 5 mounting ring, 6 filter screen, K liner, 7 magnesium rod mounting seat, 71 residue collection bag. DETAILED DESCRIPTION

[0038] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0039] See also Figure 1 , 3, 5, 7 to 10, a water inlet pipe assembly with a water diversion and cleaning function includes a water inlet pipe joint 1 and a water inlet pipe 2, one end of the water inlet pipe 2 is connected to the water inlet pipe joint 1, and the other end of the water inlet pipe 2 is bent to one side and then extends along a straight line for a distance, the water inlet pipe 2 includes an inner water inlet pipe 21 and an outer water inlet pipe 22, the inner water inlet pipe 21 includes a bent section 211 and a straight section 212, the straight section 212 is upwardly provided with a water inlet 210, the end of the straight section 212 is open, and the outer water inlet pipe 22 includes a supporting elbow 221 and a drainage hole pipe 2 22, the support elbow 221 is sleeved on the bent section 211, the drain hole pipe 222 is sleeved on the straight section 212, the drain hole pipe 222 is provided with a drain hole 220 facing downward, and the end of the drain hole pipe 222 is closed by an inclined curved surface S. A part of the water entering the water inlet inner pipe 21 through the water inlet pipe joint 1 flows into the gap formed by the water inlet inner pipe 21 and the drain hole pipe 222 from the water inlet port 210 and then is discharged from the drain hole 220, and the other part flows out from the end of the straight section 212 and is reflected by the curved surface S and then discharged from the drain hole 220. In the present application, the bent water inlet inner pipe provides conditions for the straight section to extend along the bottom of the inner tank of the electric water heater, which can prevent the formation of a "dead water zone" in the left or right half tank, prevent the deposition of scale and the growth of bacteria, and the downward opening of the drain hole also increases the water flow speed between the drain hole and the bottom of the inner tank, preventing the formation of a "blind zone" and the deposition of scale. In the present application, a "double-layer tube" drainage method is adopted in which the water inlet inner tube and the drainage hole tube are matched. By reversing and buffering the water flow, the cold water inlet is made more uniform and gentle, and the disturbance to the upper hot water layer is reduced, thereby improving the hot water output rate and reaching the new national standard of 80% (for example, the hot water output rate of Weishua products only reaches 72% of the national standard). In the present application, by setting a water inlet and a straight section with an open end, the water in the water inlet inner tube is "divided once", that is, a part flows out from the open end of the straight section and is reflected by the inclined curved surface, and a part flows out around the gap between the straight section and the drainage hole tube, so that the water in each drainage hole can be discharged relatively evenly to avoid the difference in the injection amount and injection force at each drainage hole due to different flow path distances, thereby affecting the cleaning effect of the injection water flow on scale. In the present application, the relatively large amount of water flowing out from the open end of the straight section is reflected by the curved surface, which can be buffered and reversed, thereby ensuring that the surrounding water temperature will not be disturbed too much when discharged. In the present application, the inclined curved surface at the end of the drain hole pipe not only guides the water flow sprayed from the end of the straight section to the downwardly opened drain hole through the inclined angle, but also ensures that the water flow will not produce concentrated impact force and will not lose water flow strength when reflected through the reflection of the curved surface, so that the discharged cold water can more effectively clean the scale in the inner tank. Preferably, the water inlet inner pipe 21 is made of insulating material, the support elbow 221 is made of metal material, and the drain hole pipe 222 is made of metal material. Preferably, the bottom outer peripheral surface of the water inlet pipe joint 1 is formed with external threads.

[0040] See also Figure 3 , 6 8 to 10, the straight section 212 is further provided with a diverter belt 3, the number of the water inlets 210 is at least two, and the diverter belt 3 is located between two adjacent water inlets 210. This structural design allows the water flowing from the water inlet into the gap between the water inlet inner tube and the drain hole tube to be separated and "secondarily diverted", thereby evenly distributed to the corresponding drain holes, so that the water flow ejected from each drain hole has a roughly uniform ejection amount and ejection strength, which has a better effect on the subsequent cleaning of scale.

[0041] See also Figure 3 , 6 8 to 10, the diverter belt 3 is arc-shaped or ring-shaped, and the inner circumference of the diverter belt 3 is connected to the outer wall of the water inlet inner tube 21, and the outer circumference of the diverter belt 3 is against the inner wall of the drain hole tube 222. This structural design can limit the circumferential direction of the water flowing out of the water inlet, so that the water is evenly distributed to the corresponding drain holes.

[0042] See also Figure 1 , 3 , 5, 7 to 10, the curved surface S gradually tilts toward the side of the drain hole 220 from top to bottom, and the curved surface S is a concave curved surface. This structural design utilizes the inclination angle of the curved surface to guide the water flow sprayed from the end of the straight section to the drain hole opening downward through the inclination angle, and also ensures that the water flow will not produce concentrated impact force and will not lose the strength of the water flow during reflection through the reflection of the concave curved surface, so that the discharged cold water can more effectively clean the scale in the inner tank. The design of the concave curved surface not only reflects the water flow but also disperses the impact force, playing a role in buffering and preserving the strength of the water flow. Preferably, the inclination angle between the curved surface S and the axis of the drain hole tube is between 5 degrees and 85 degrees, and more preferably, the inclination angle between the curved surface S and the axis of the drain hole tube is between 15 degrees and 60 degrees. Preferably, the curved surface S is a tongue-shaped concave curved surface. In the actual processing process, the drainage hole tube can be processed not only by using a sleeve with one end closed to form a drainage hole tube with a tongue-shaped concave surface through stamping, but also by using a sleeve with two sides through kneading to form a tongue-shaped concave surface. Generally, under this processing method, a wrinkle angle will be formed between the curved surface and the side wall of the sleeve due to the overlap of the wall surface.

[0043] See also Figures 2 to 4As shown, the water inlet pipe joint 1 is provided with a central channel 10 connected to the water inlet inner pipe 21. The water inlet pipe joint 1 is also formed with an insertion sink 100 extending along the central channel 10, and also includes an isolation seal ring 4 sleeved on the periphery of the top end of the water inlet inner pipe 21. The isolation seal ring 4 is inserted into the insertion sink 100 together with the top end of the water inlet inner pipe 21. This structural design makes the installation of the water inlet inner pipe 21 and the water inlet pipe joint 1 more stable and can play a good sealing role. Through this structural design, the water inlet pipe assembly has a water resistance structure, and the function is more complete and comprehensive.

[0044] See also Figures 2 to 4 As shown, the water inlet pipe joint 1 is further provided with a clamping sink 1000 extending along the insertion sink 100, a step-like structure is formed between the insertion sink 100 and the clamping sink 1000, the cross section of the isolation seal ring 4 is T-shaped, the isolation seal ring 4 includes a surrounding portion 41 and a clamping portion 42, the surrounding portion 41 together with the top end of the water inlet inner pipe 21 is inserted into the insertion sink 100, and the clamping portion 42 is clamped into the clamping sink 1000. Preferably, the inner side wall of the clamping sink 1000 is formed with an internal thread.

[0045] See also Figure 4 , 9 As shown, the top edge of the support elbow 221 is folded outward to form a limiting edge 2211, and the limiting edge 2211 is attached to the end surface of the isolation seal ring 4. In the present application, the limiting edge of the support elbow is connected with the isolation seal ring, which not only ensures the compactness of the structure, but also provides good conditions for the subsequent fixing of the support elbow.

[0046] See also Figure 3 , 8 As shown in FIG. 9 , the support elbow 221 is also sleeved with a mounting ring 5 at one end opposite to the limiting edge 2211, and the drain hole pipe 222 is sleeved on the mounting ring 5. This structural design not only positions the support elbow, but also ensures that the drain hole pipe can be installed and supported.

[0047] See also Figure 3 , 8 As shown, the drain hole pipe 222 mounted on the mounting ring 5 overlaps the support elbow pipe 221 for a distance in the radial direction. This structural design enables the support elbow pipe to not only support the bent section, but also further play a supporting role to support the drain hole pipe, making the structure more stable and preventing the overall structure from shaking severely when cold water enters. Preferably, the overlap length of the drain hole pipe 222 and the support elbow pipe 221 in the radial direction is not less than one tenth of the length of the drain hole pipe.

[0048] See also Fig.10As shown, the drain hole 220 includes a main drain hole 2201 and a secondary drain hole 2202. The main drain hole 2201 is opened at the bottom of the drain hole pipe 222 and is arranged at equal intervals along the axis direction of the drain hole pipe 222. The secondary drain holes 2202 are also arranged at equal intervals along the axis direction of the drain hole pipe 222 and are located on both sides of the circumference of the main drain hole 2201. Preferably, the aperture of the main drain hole is larger than that of the secondary drain hole, so that the amount of water discharged through the main drain hole is the largest and the impact force is the strongest, so that the traditional "blind area" of the drain hole pipe and the bottom of the inner tank of the electric water heater is better cleaned and the water circulates faster, and most of the water is sprayed downward to reduce the disturbance to the upper hot water layer.

[0049] See also Fig.10 As shown, the secondary drainage hole 2202 gradually moves away from the end of the drainage hole tube 222 as it moves away from the main drainage hole 2201 in the circumferential direction. This structural design allows the water reflected from the curved surface to flow as far as possible to a place farther along the flow path, so that a relatively large amount of water flowing out of the end of the straight section is evenly distributed and discharged from drainage holes at various locations, ensuring the water discharge strength of the drainage holes farther along the flow path.

[0050] See also Fig.10 As shown, the secondary drain hole 2202 is located on the side close to the mounting ring 5 and gradually approaches the mounting ring 5 as it moves away from the primary drain hole 2201 in the circumferential direction. This structural design is also based on the consideration that the water flow at the farthest end of the flow path becomes smaller, and it does not need to be discharged through the large-diameter drain hole, and the small-diameter drain hole is sufficient for the discharge of this part of the water.

[0051] See also Figures 1 to 3 , 5 to 9, further comprising a filter screen 6, which is mounted in an N-shaped buckle on the upper side of the drain hole pipe 222. In the present application, the scale is retained between the meshes on both sides of the filter screen through the meshes hanging down from the filter screen, and rarely passes through the meshes to move to the water outside the filter screen, and then the scale retained between the meshes on both sides of the filter screen is guided and flushed to a specific location, such as the residue collection bag described below, through the spraying of the drain hole.

[0052] An electric water heater, see Fig.11 As shown, the water inlet pipe assembly with the water inlet diversion and cleaning function is adopted.

[0053] See also Fig.11 As shown, it includes an inner tank K, a water inlet pipe assembly is arranged at the bottom of the inner tank K cavity, and a straight section 212 extends along the bottom wall of the inner tank K. This structural design enables the water inlet pipe to spray to the entire inner tank range as much as possible, preventing the formation of a "dead water zone" to deposit scale or breed bacteria, and can provide users with fresh and clean water.

[0054] See also Fig.11As shown, it also includes a magnesium rod mounting seat 7, and a residue collection bag 71 is arranged on the magnesium rod mounting seat 7.

[0055] Although the specific implementation modes of the present invention have been described above, those skilled in the art may modify the present invention without departing from the spirit and principle of the present invention. The protection scope of the present invention is defined by the claims and their equivalents.

Claims

1. A water inlet pipe assembly with water diversion and cleaning function, comprising a water inlet pipe joint and a water inlet pipe, one end of the water inlet pipe is connected to the water inlet pipe joint, and the other end of the water inlet pipe is bent to one side and then extends along a straight line for a distance, characterized in that: The water inlet pipe includes an inner water inlet pipe and an outer water inlet pipe, the inner water inlet pipe includes a bent section and a straight section, the straight section is provided with a water inlet upward, and the end of the straight section is open, the outer water inlet pipe includes a supporting elbow and a drainage hole pipe, the supporting elbow is sleeved on the bent section, the drainage hole pipe is sleeved on the straight section, the drainage hole pipe is provided with a drainage hole downward, and the end of the drainage hole pipe is closed by an inclined curved surface, and water entering the inner water inlet pipe through the water inlet pipe joint, part of which flows from the water inlet into the gap formed by the inner water inlet pipe and the drainage hole pipe and then is discharged from the drainage hole, and the other part flows out from the end of the straight section and is reflected by the curved surface and then discharged from the drainage hole.

2. The water inlet pipe assembly with water diversion and cleaning function according to claim 1, characterized in that: The straight section is further provided with a diverter belt, the number of the water inlets is at least two, and the diverter belt is located between two adjacent water inlets.

3. The water inlet pipe assembly with water diversion and cleaning function according to claim 2, characterized in that: The diverter belt is arc-shaped or ring-shaped, the inner circumference of the diverter belt is connected to the outer wall of the water inlet inner pipe, and the outer circumference of the diverter belt abuts against the inner wall of the drainage hole pipe.

4. The water inlet pipe assembly with water diversion and cleaning function according to any one of claims 1 to 3, characterized in that: The curved surface gradually inclines toward one side of the drainage hole from top to bottom, and the curved surface is a concave curved surface.

5. The water inlet pipe assembly with water diversion and cleaning function according to claim 4, characterized in that: The water inlet pipe joint is provided with a central channel connected to the water inlet inner pipe. The water inlet pipe joint is also formed with an insertion sink extending along the central channel, and also includes an isolation sealing ring sleeved on the periphery of the top end of the water inlet inner pipe. The isolation sealing ring is inserted into the insertion sink together with the top end of the water inlet inner pipe.

6. The water inlet pipe assembly with water diversion and cleaning function according to claim 5, characterized in that: The water inlet pipe joint is also provided with a clamping sink extending along the insertion sink, and a step-like structure is formed between the insertion sink and the clamping sink. The cross-section of the isolation sealing ring is T-shaped. The isolation sealing ring includes a surrounding portion and a clamping portion. The surrounding portion is inserted into the insertion sink together with the top end of the water inlet inner pipe, and the clamping portion is clamped into the clamping sink.

7. The water inlet pipe assembly with water diversion and cleaning function according to claim 6, characterized in that: The top edge of the supporting elbow is folded outward to form a limiting edge, and the limiting edge is in contact with the end surface of the isolation sealing ring.

8. The water inlet pipe assembly with water diversion and cleaning function according to claim 7, characterized in that: The supporting elbow is also sleeved with a mounting ring at one end opposite to the limiting edge, and the drainage hole pipe is sleeved on the mounting ring.

9. The water inlet pipe assembly with water diversion and cleaning function according to claim 8, characterized in that: The drainage hole pipe sleeved on the mounting ring overlaps the supporting elbow pipe for a distance in the radial direction.

10. The water inlet pipe assembly with water diversion and cleaning function according to claim 8, characterized in that: The drainage holes include a main drainage hole and a secondary drainage hole. The main drainage holes are opened at the lowermost side of the drainage hole tube and are arranged at equal intervals along the axial direction of the drainage hole tube. The secondary drainage holes are also arranged at equal intervals along the axial direction of the drainage hole tube and are located on both sides of the circumference of the main drainage hole.

11. The water inlet pipe assembly with water diversion and cleaning function according to claim 10, characterized in that: The secondary drainage hole gradually moves away from the end of the drainage hole pipe as it moves away from the main drainage hole in the circumferential direction.

12. The water inlet pipe assembly with water diversion and cleaning function according to claim 11, characterized in that: The secondary drainage hole gradually approaches the mounting ring on a side close to the mounting ring as it moves away from the primary drainage hole in the circumferential direction.

13. The water inlet pipe assembly with water diversion and cleaning function according to any one of claims 1 to 3 and 5 to 12, characterized in that: It also includes a filter screen, which is mounted on the upper side of the drainage hole pipe in an N-shaped buckle.

14. An electric water heater, characterized in that: A water inlet pipe assembly with water inlet diversion and cleaning function as described in any one of claims 1 to 13 is used.

15. The electric water heater according to claim 14, characterized in that: It comprises an inner liner, wherein the water inlet pipe assembly is arranged at the bottom of the inner liner cavity, and the straight section extends along the bottom wall of the inner liner.

16. The electric water heater according to claim 15, characterized in that: It also includes a magnesium rod mounting seat, on which a residue collection bag is arranged.

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