CN207299547U - water heater - Google Patents

Abstract

The utility model discloses a water heater, which comprises: an inner container with a sewage discharge port; a sewage discharge pipe connected to the sewage discharge port; A drain valve is installed inside the pipe section of the drain valve, and a chute is formed on the peripheral wall of the pipe section of the drain valve. It is rotatably installed on the outer peripheral surface of the pipe section of the drain valve and is opposite to the chute. The inner peripheral surface of the knob is provided with a second connecting part matched with the first connecting part. The knob drives the moving tile between the first position and the second position. The thickness of the knob is less than or equal to 3.5 mm; the valve cover. According to the water heater of the embodiment of the utility model, the thickness of the knob is less than or equal to 3.5 mm, so that the shrinkage and deformation of the knob are avoided, so that the knob and the moving tile are accurately matched, and the drain valve is accurately connected or closed to the water outlet channel.

Description

water heater

technical field

The utility model belongs to the technical field of household appliances, in particular to a water heater.

Background technique

In the water heater in the related art, the knob in the sewage pipe and the pipe section of the drain valve are inconvenient to disassemble and assemble, and the assembly efficiency is low.

Utility model content

The utility model aims to solve one of the above-mentioned technical problems at least to a certain extent.

For this reason, the utility model proposes a water heater, and the assembly efficiency of the water heater is high.

The water heater according to the embodiment of the present utility model includes: an inner container, the inner container has a sewage outlet; a sewage pipe, the sewage pipe is connected to the sewage outlet, and the sewage pipe includes: a drain valve pipe section, the drain valve The pipe section has a water outlet passage communicating with the sewage outlet, a drain valve is installed in the pipe section of the drain valve, and a valve cavity is configured in the pipe section of the drain valve, and the peripheral wall of the pipe section of the drain valve is formed with a A chute communicating with the valve chamber, the drain valve includes: a fixed ceramic piece and a movable ceramic piece installed radially along the pipe section of the drain valve, and the movable ceramic piece and the fixed ceramic piece are provided with the movable ceramic piece that penetrates through the movable ceramic piece The drain holes on the upper and lower surfaces of the ceramic plate and the fixed ceramic plate, the drain hole is connected with the water outlet hole to form a water outlet channel, the fixed ceramic plate is fixed relative to the valve cavity, and the movable ceramic plate is rotatably installed on the In the valve cavity, the outer peripheral wall of the moving ceramic piece is provided with a first connecting part; the knob is rotatably arranged on the outer peripheral surface of the drain valve pipe section and is opposite to the chute, and the knob of the knob is The inner peripheral surface is provided with a second connecting part, the second connecting part cooperates with the first connecting part, and the knob drives the moving tile to rotate between the first position and the second position. When the ceramic piece is in the first position, the water outlet channel is connected; when the moving ceramic piece is in the second position, the drainage holes of the moving ceramic piece and the fixed ceramic piece cannot be connected, and the water outlet The passage is closed, and the thickness of the knob is less than or equal to 3.5 mm; a valve cover with a drainage channel, the valve cover is connected to the lower part of the drain valve pipe wall to limit the position of the moving ceramic piece and the fixed ceramic piece degree of freedom in the axial direction, the channel communicates with the valve cavity.

According to the water heater of the embodiment of the utility model, the thickness of the knob is less than or equal to 3.5 mm, so that the shrinkage and deformation of the knob are avoided, so that the knob and the moving tile are accurately matched, and the drain valve is accurately connected or closed to the water outlet channel.

In addition, the water heater according to the embodiment of the utility model may also have the following additional technical features:

According to an embodiment of the present invention, the knob is a circular ring, and the circular ring is formed by splicing at least two arc-shaped segments.

According to an embodiment of the present invention, the knob is formed by splicing a first arc segment and a second arc segment, the end of the first arc segment has a first buckle structure or a second buckle structure, and the second The end of the arc segment has the second fastening structure or the first fastening structure matched with the first fastening structure or the second fastening structure.

According to an embodiment of the present utility model, the first fastening structure is a T-shaped sinking groove, the second fastening structure is a T-shaped locking protrusion, and the T-shaped locking protrusion sinks to the bottom and is inserted into the T-shaped In the sink.

According to an embodiment of the present invention, the knob is formed by splicing a first arc segment and a second arc segment, and the circumference of the first arc segment is three quarters of the total circumference of the ring , the perimeter of the second arc segment is a quarter of the total perimeter of the ring.

According to an embodiment of the present invention, the inner peripheral surface of the first arc segment is provided with two second connecting parts, and the connecting line of the two second connecting parts coincides with the diameter of the circular ring The peripheral wall of the pipe section of the drain valve is provided with two slide grooves, and the two slide grooves are arranged symmetrically with respect to the central axis of the pipe section of the drain valve.

According to an embodiment of the present invention, the notch of the first connecting part is formed by inwardly indenting the peripheral surface of the moving ceramic piece in the radial direction, the second connecting part is a bump, The protrusion is formed extending radially inward along the inner peripheral surface of the knob.

According to an embodiment of the present invention, the sewage pipe further includes: an extension rod pipe section extending into the inner container, and a water outlet hole is formed on the side wall of the extension rod pipe section, and the water in the inner container passes through the The water outlet hole enters the sewage pipe for discharge, and the lowest end surface of the water outlet hole is lower than the inner bottom wall of the inner tank or is flush with the inner bottom wall of the inner tank; it is used for fixed connection with the sewage outlet of the inner tank A pipe section, the fixed connection pipe section is connected to the lower part of the extension rod pipe section, and the fixed connection pipe section communicates with both the valve cavity and the water outlet hole.

According to an embodiment of the present invention, the pipe section of the extension rod is a U-shaped frame, and the U-shaped frame defines at least two symmetrical water outlet holes, and the longitudinal section of the water outlet holes is square.

According to an embodiment of the present invention, the pipe section of the extension rod includes: a first connecting arm and a second connecting arm, the lower ends of the first connecting arm and the second connecting arm are connected to the upper end of the fixed connecting pipe section; A mounting plate, the mounting plate is connected to the upper ends of the first connecting arm and the second connecting arm, and a mounting hole is formed on the mounting plate, the water heater also includes a magnesium rod, one end of the magnesium rod installed in the mounting hole.

According to an embodiment of the present invention, the magnesium rod includes: a thin diameter part, the thin diameter part extends into the installation hole, the upper end of the thin diameter part is higher than the upper surface of the installation plate; The large diameter portion is connected to the upper end of the small diameter portion, and a spring washer is provided between the lower end surface of the large diameter portion and the upper surface of the mounting plate.

According to an embodiment of the present invention, the drain valve further includes: a supporting tile, the supporting tile is radially installed in the valve cavity for supporting the fixed tile and the moving tile, Wherein, the contact surface between the supporting tile and the moving tile is a smooth surface.

According to an embodiment of the present invention, the supporting ceramic piece is a hollow ring structure or the shape and structure of the supporting ceramic piece and the moving ceramic piece are the same.

According to an embodiment of the present invention, the diameter of the knob is larger than 3MM and smaller than 5MM.

According to an embodiment of the present invention, the outer peripheral surface of the knob is provided with a plurality of reinforcing ribs.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a sectional view of a water heater according to an embodiment of the present invention;

Fig. 2 is a partial enlarged view of place A in Fig. 1;

Fig. 3 is a partial enlarged view of place B in Fig. 1;

Fig. 4 is the cross-sectional view after the blowdown pipe and the magnesium rod are assembled according to one embodiment of the utility model;

Fig. 5 is an exploded view of a sewage pipe and a magnesium rod according to an embodiment of the present invention;

Fig. 6 is a perspective view of a sewage pipe according to an embodiment of the present invention;

Fig. 7 is a perspective view of a valve cover according to an embodiment of the present invention;

Fig. 8 is a perspective view of a moving ceramic piece according to an embodiment of the present invention;

Fig. 9 is a perspective view of a fixed ceramic sheet according to an embodiment of the present invention;

Fig. 10 is a perspective view of a knob according to an embodiment of the present invention;

Fig. 11 is an exploded view of a knob according to an embodiment of the present invention.

Reference signs:

water heater 100;

Inner tank 10; water storage cavity 11;

Sewage pipe 20;

Extension rod pipe section 21;

Water outlet hole 211; first connecting arm 212; second connecting arm 213; mounting plate 214; mounting hole 2141;

Fixed connection pipe section 22;

The rotating connecting plate 221; the annular boss 2211; the grip part 2212;

Drain valve pipe section 23;

Moving tile 231; first connecting part 2311; fixed tile 232; drainage hole 233; supporting tile 234; chute 235;

Valve cover 24; Card slot 241; Channel 242;

Knob 25;

The second connecting part 251; the first arc section 252; the T-shaped sinking groove 2521; the second arc section 253; the T-shaped protrusion 2531;

Rib 254;

handle 26;

extension tube 27;

Magnesium rod 30; small diameter part 31; large diameter part 32;

Inlet pipe 40;

Outlet pipe 50;

Spring washer 60.

Detailed ways

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

The following describes a water heater 100 according to an embodiment of the present invention with reference to FIGS. 1-11 . As shown in FIG. Wherein, the liner 10 defines a water storage chamber 11, the liner 10 has a sewage outlet communicating with the water storage chamber 11, and the sewage pipe 20 is connected to the sewage outlet.

As shown in Figure 1, the liner 10 defines a water storage chamber 11 having a water inlet, a water outlet and a sewage outlet, wherein the water inlet is provided with a water inlet pipe 40 communicating with the water storage chamber 11 and the external pipeline, and the water outlet is provided with There is a water outlet pipe 50 communicating with the water storage chamber 11 and external pipelines, the water outlet end of the water outlet pipe 50 can be connected with a spraying device for users to use, and the sewage pipe 20 is connected to the sewage outlet.

As shown in Fig. 4 and Fig. 6, the sewage pipe 20 includes a drain valve pipe section 23 and a drain valve arranged in the drain valve pipe section 23, wherein the drain valve includes: a fixed porcelain piece 232, a moving porcelain piece 231, a knob 25 and a valve cover twenty four.

Specifically, the drain valve pipe section 23 has a water outlet channel that communicates with the sewage outlet. A drain valve is installed in the drain valve pipe section 23. The drain valve pipe section 23 is configured with a valve cavity. The peripheral wall of the drain valve pipe section 23 is formed. And the chute 235 communicated with the valve cavity. In other words, during the sewage discharge process, the drain valve located in the valve cavity controls the on-off of the water outlet passage.

The fixed ceramic piece 232 and the movable ceramic piece 231 installed radially along the drainage valve pipe section 23, the movable ceramic piece 231 and the fixed porcelain piece 232 are provided with a drain hole 233 penetrating through the upper and lower surfaces of the movable ceramic piece 231 and the fixed porcelain piece 232, and the drain hole 233 communicates with the water outlet hole 211 to form a water outlet passage. The fixed ceramic piece 232 is fixed in position relative to the valve cavity, and the moving ceramic piece 231 is rotatably installed in the valve cavity. The valve cover 24 of 242 is connected to the lower part of the drain valve pipe section 23 to limit the degree of freedom of the movable ceramic piece 231 and the fixed ceramic piece 232 in the axial direction, and the passage 242 communicates with the valve chamber.

As shown in Fig. 1 in conjunction with Fig. 2, Fig. 8 and Fig. 9, the valve cavity is generally a cylindrical cavity, and the fixed ceramic plate 232 and the movable ceramic plate 231 are circular plates with drainage holes 233, and the fixed ceramic plate 232 and the movable ceramic plate 231 is stacked in the valve chamber along the axial direction of the valve chamber. Since both the fixed ceramic piece 232 and the moving ceramic piece 231 are processed and formed of non-metallic materials, even if they are not used for a long time, there will be no rust phenomenon.

The knob 25 is rotatably installed on the outer peripheral surface of the drain valve pipe section 23 and is opposite to the chute 235. The inner peripheral surface of the knob 25 is provided with a second connecting portion 251, and the second connecting portion 251 cooperates with the first connecting portion 2311. 25 Drive the moving ceramic piece 231 to rotate between the first position and the second position. When the moving ceramic piece 231 is at the first position, the water outlet channel is connected. When the moving ceramic piece 231 is at the second position, the moving ceramic piece 231 and the second position The drainage hole 233 of the fixed ceramic sheet 232 cannot be conducted, and the water outlet path is closed.

In other words, during the rotation of the knob 25 along the circumferential direction of the drain valve pipe section 23, since the first connecting part 2311 and the second connecting part 251 cooperate with each other, the knob 25 can drive the moving tile 231 to rotate synchronously, thereby changing the rotation of the moving tile. The communication state between the drain hole 233 of 231 and the drain hole 233 of the fixed ceramic sheet 232. When the moving ceramic piece 231 is in the first position, the drainage hole 233 of the moving ceramic piece 231 and the drainage hole 233 of the fixed ceramic piece 232 completely overlap along the extending direction of the water outlet passage. 20 has the largest water output; when the moving ceramic piece 231 is in the second position, the drainage hole 233 of the moving ceramic piece 231 is completely separated from the drainage hole 233 of the fixed ceramic piece 232. At this time, the water outlet channel is completely closed, and the sewage pipe 20 does not drain externally; when the moving ceramic piece 231 is located between the first position and the second position, the drainage hole 233 of the moving ceramic piece 231 and the drainage hole 233 of the fixed ceramic piece 232 are partially overlapped, and at this time, the water outlet channel is partially guided Pass, the water output of the sewage pipe 20 is less than the maximum water output.

If the thickness of the knob 25 is designed thicker, the shape and structure of the knob 25 is easy to shrink and deform, so that the knob 25 cannot be accurately installed on the outer peripheral surface of the drain valve pipe section 23, and the knob 25 cannot drive the movable tile 231 to rotate.

The inventor has found through research and a large number of experiments that when the thickness of the knob 25 is designed to be less than or equal to 3.5 mm, the knob 25 will not be prone to shrinkage deformation.

In addition, in order to meet the needs of connecting the drain valve pipe section 23 with other components, the outer peripheral surface of the drain valve pipe section 23 is usually provided with some convex ribs. Therefore, in most cases, the closing knob 25 can only be directly inserted from the axial direction only when it is deformed to a certain extent. If it is installed on the outer peripheral surface of the drain valve pipe section 23 or taken off from the outer peripheral surface of the drain valve pipe section 23, the knob may be broken due to improper operation.

Therefore, the inventor of the present utility model designed the knob 25 as an open-close ring formed by splicing at least two arc-shaped segments. In other words, the knob 25 can be composed of two arc segments, for example, two segments, three segments or four segments. In this way, during the assembly process of the knob 25 , each arc segment can be pre-positioned on the outer peripheral surface of the drain valve pipe segment 23 , and then the ends of adjacent arc segments can be spliced together to form a completely closed ring. Thereby, deformation of the knob 25 can be avoided, and the assembly process of the knob 25 can be improved.

According to the water heater 100 of the embodiment of the utility model, the thickness of the knob 25 is less than or equal to 3.5 mm, so that the shrinkage and deformation of the knob 25 are avoided, so that the knob 25 and the moving tile 231 are accurately matched, and the drain valve is accurately turned on or off. Water access.

In some embodiments of the present utility model, as shown in FIG. 10 in conjunction with FIG. 11 , the knob 25 is formed by splicing a first arc segment and a second arc segment, and the end of the first arc segment 252 has a first snap-fit structure Or the second fastening structure, the end of the second arc segment 253 has the second fastening structure or the first fastening structure matched with the first fastening structure or the second fastening structure. In other words, both ends of the first arc section 252 have the first fastening structure or the second fastening structure, and the two ends of the second arc section 253 have the second fastening structure or the first fastening structure. structure; or one end of the first arc segment 252 has a first snap-fit structure and the other end has a second snap-fit structure, and one end of the second arc-shaped segment 253 has a second snap-fit structure and the other The end has a first fastening structure. Thus, a stable fit between the first arc segment 252 and the second arc segment 253 is realized.

In some embodiments, the first fastening structure is a T-shaped sinking groove 2521 , the second fastening structure is a T-shaped locking protrusion 2531 , and the T-shaped locking protrusion 2531 sinks and inserts into the T-shaped sinking groove 2521 . As shown in Figures 10 and 11, the T-shaped sinking groove 2521 is recessed upward from the lower end of the first arc section 252, and the upper end of the T-shaped sinking groove 2521 is closed, so that the first arc section 252 and the first arc section 252 When the two arc sections 253 are spliced together, the T-shaped protrusion 2531 of the second arc section 253 can be inserted into the T-shaped sinking groove 2521 from the lower end until the upper end of the T-shaped locking protrusion 2533 stops against the upper end of the T-shaped sinking groove 2521, Thus, the cooperation stability between the first arc segment 252 and the second arc segment 253 is further improved.

In a further optional implementation example, the circumference of the first arc segment 252 is three quarters of the total circumference of the ring, and the circumference of the second arc segment 253 is one fourth of the total circumference of the ring. Thus, the processing of the first arc segment 252 and the second arc segment 253 can be made more convenient and splicing easier.

In a specific embodiment of the present utility model, as shown in FIG. 6 , FIG. 10 and FIG. 11 , the inner peripheral surface of the first arc-shaped section 252 is provided with two second connecting parts 251, and the two second connecting parts 251 The connecting line coincides with the diameter of the ring. The peripheral wall of the drain valve pipe section 23 is provided with two slide grooves 235 , and the two slide grooves 235 are arranged symmetrically with respect to the central axis of the drain valve pipe section 23 . In this way, the knob 5 and the moving ceramic piece 231 can rotate synchronously clockwise or counterclockwise along the tracks of the two slide grooves 235, so as to effectively realize the conduction and closure of the water outlet passage.

In a specific embodiment, as shown in FIG. 8 and FIG. 10 , the first connecting portion 2311 is a notch, and the notch is formed by inwardly indenting the circumferential surface of the moving ceramic piece 231 toward the radial direction, and the second connecting portion 251 is The protrusion is formed by extending radially inward along the inner peripheral surface of the knob 25 . In this way, when the knob 25 is installed, the two projections on the first arc section 252 can be pre-fitted through the slide groove 235 and the notch on the moving ceramic piece 231, and then the second arc section 253 and the second arc section 253 can be fitted together. An arc segment 252 is spliced, thereby further improving the assembly efficiency between the first arc segment 252 and the second arc segment 253 .

In some other embodiments of the present invention, the sewage pipe 20 includes: an extension rod pipe section 21 , a fixed connection pipe section 22 and a drain valve pipe section 23 . As shown in FIG. 4 , the extension rod pipe section 21 , the fixed connection pipe section 22 and the drain valve pipe section 23 are sequentially connected from top to bottom. Wherein, the sewage pipe 20 may be made of a metal with better corrosion resistance, such as copper. The copper piece is integrally formed by a forging process to form a sewage pipe 20 with an extension rod pipe section 21 , a fixed connection pipe section 22 and a drain valve pipe section 23 .

Specifically, the extension rod tube section 21 extends into the inner tank 10 , and the side wall of the extension rod tube segment 21 is formed with a water outlet hole 211 , and the water in the inner tank 10 enters the sewage pipe 20 through the water outlet hole 211 to be discharged. The fixed connection pipe section is connected with the drain outlet of the inner container 10, the fixed connection pipe section is connected to the lower part of the extension rod pipe section 21, and the fixed connection pipe section 22 communicates with the valve cavity and the water outlet hole 211.

The inventor found through experiments that by setting the sewage pipe 20 as an extension rod pipe section 21, a fixed connection pipe section 22 and a drain valve pipe section 23, a better water output is ensured, and the sewage pipe 20 is better installed with the inner tank 10 Cooperate.

In an optional embodiment, the inventor further found that the lowest end surface of the water outlet hole 211 of the extension rod pipe section 21 is set to be lower than the bottom wall of the inner container 10, or the lowest end surface of the water outlet hole 211 of the extension rod pipe section 21 is arranged to be in line with the inner container. 10 bottom walls are flush. In this way, the water in the water storage chamber 11 can be completely emptied, so that the dirt deposited on the bottom wall of the liner 10 can also be completely taken away with the water flow.

Because the sewage pipe 20 is a metal piece, the overall weight of the sewage pipe 20 is relatively large. Workers generally feel inconvenient to hold the sewage pipe 20 during assembly and disassembly, and it takes time and effort to assemble and disassemble it.

Therefore, the inventors improved the structure of the fixedly connected pipe section 22 . Specifically, as shown in Figure 6, a rotating connecting plate 221 is provided on the outer peripheral surface of the lower end of the fixedly connecting pipe section 22, and a gripping portion 2212 is arranged on the outer periphery of the rotating connecting plate 221, so that workers can hold the gripping portion 2212 to install Sewage pipe 20. Thus, the installation efficiency of the sewage pipe 20 is effectively improved, and the labor intensity of workers is reduced.

The rotating connecting plate 221 is a hexagonal connecting plate. In this way, the installation and disassembly of the drainage pipe 20 can be performed by means of an installation wrench matched with the hexagonal connecting plate, thereby further improving the installation efficiency of the drainage pipe.

In an optional embodiment, the radial width from the outer periphery of the fixed connection pipe section 22 to the outer edge of the hexagonal connecting plate is between 8 mm and 20 mm. As a result, it is more favorable for the installation wrench to cooperate with the hexagonal connecting plate, and the efficiency of installation and disassembly is improved.

In an optional implementation example, the upper surface of the hexagonal connecting plate is provided with an annular boss 2211, and the annular boss 2211 is arranged around the outer peripheral surface of the fixed connection pipe section 22, and is provided between the inner surface of the sewage outlet and the outer surface of the fixed connection pipe section 22. There is an annular sealing ring, and the annular sealing ring stops against the upper surface of the annular boss 2211 . Thus, the sealing performance of the joint between the fixed connection pipe section 22 and the sewage outlet can be effectively improved.

In a further optional example, the height of the annular boss 2211 is 0.5-3MM, and the diameter of the annular boss 2211 ranges from 30-40mm. The inventor found that by designing the height of the annular boss 2211 to be 0.5-3mm and the diameter to be 30-40mm, it is not only beneficial to the processing of the sewage pipe 20, but also can improve the structural strength of the entire sewage pipe 20.

In some other embodiments of the present invention, as shown in Fig. 1 in conjunction with Fig. 3 and Fig. 6, the inner peripheral wall of the sewage outlet is provided with a first internal thread, and the outer peripheral wall of the fixed connection pipe section 22 is provided with a first internal thread. of the first external thread. That is to say, the sewage pipe 20 and the sewage outlet can be quickly connected by screwing, thereby improving the installation efficiency of the sewage pipe 20 and reducing the production cost of the water heater 100 .

In a specific implementation, a connecting pipe is provided in the sewage outlet, one end of the connecting pipe is connected to the sewage outlet, and the other end of the connecting pipe extends downward, and a first internal thread is provided on the inner peripheral wall of the connecting pipe to fix the connecting pipe section 22. The outer peripheral wall is provided with a first external thread matched with the first internal thread. Thereby, the installation efficiency of the waste discharge pipe 20 can be further improved.

In some optional embodiments, as shown in Figure 4, Figure 5 and Figure 6, the extension rod pipe section 21 is a U-shaped frame, and the U-shaped frame is configured with at least two symmetrical water outlet holes 211, and the longitudinal section of the water outlet holes 211 is square . That is to say, the water in the water storage chamber 11 can enter the sewage pipe 20 through the two water outlet holes 211 at the same time, so as to speed up the drainage speed of the water heater 100 . It can be understood that the above-mentioned embodiments are only illustrative, and are not intended to limit the protection scope of the present utility model. The shape and structure of the extension rod pipe section 2121 can be adaptively modified according to needs, for example, two or more water outlet holes 211 can be provided in the circumferential direction of the extension rod pipe section 21 .

In a specific embodiment of the present invention, the pipe section 21 of the extension rod may include: a first connecting arm 212 , a second connecting arm 213 and a mounting plate 214 .

Specifically, the lower ends of the first connecting arm 212 and the second connecting arm 213 are connected to the upper end of the fixed connecting pipe section 22 . The mounting plate 214 is connected to the upper ends of the first connecting arm 212 and the second connecting arm 213, and a mounting hole 2141 is formed on the mounting plate 214. The water heater 100 also includes a magnesium rod 30, and one end of the magnesium rod 30 is mounted in the mounting hole 2141.

As shown in FIG. 4 and FIG. 5 , the first connecting arm 212 , the second connecting arm 213 and the mounting plate 214 are connected to each other to form a substantially U-shaped frame structure. The U-shaped frame structure can be used to install magnesium rods 30, so that there is no need to install additional devices for installing magnesium rods 30 in the inner tank 10, so that the water storage space in the inner tank 10 is larger, and the number of separately installed magnesium rods 30 is reduced. The process of the device saves man-hours and reduces the production cost of the water heater 100 .

In some other embodiments of the present invention, as shown in FIG. 4 and FIG. 5 , the magnesium rod 30 includes: a small-diameter portion 31 and a large-diameter portion 32 . Specifically, the small-diameter portion 31 extends into the installation hole 2141 , and the upper end of the small-diameter portion 31 is higher than the upper surface of the installation plate 214 . The large-diameter portion 32 is connected to the upper end of the small-diameter portion 31 . The water heater 100 is affected by the water flow in the inner tank 10 during use, and the fit between the narrow diameter portion 31 and the mounting hole 2141 will become less firm, and the spring washer 60 can also prevent the magnesium rod 30 from detaching from the mounting hole 2141, thereby improving The connection stability between the magnesium rod 30 and the mounting plate 214.

Wherein, the installation hole 2141 is provided with a second internal thread, and the outer peripheral wall of the narrow portion 31 is provided with a second external thread matched with the second internal thread. Thus, the magnesium rod 30 can be quickly installed on the mounting plate 214, improving the installation efficiency of the magnesium rod.

In some other embodiments of the present utility model, the drain valve further includes: supporting tiles 234 . The supporting ceramic piece 234 is radially installed in the valve cavity for supporting the fixed ceramic piece 232 and the moving ceramic piece 231 , wherein the contact surface of the supporting ceramic piece 234 and the moving ceramic piece 231 is a smooth surface. That is, the upper surface of the moving ceramic piece 231 is attached to the lower surface of the fixed porcelain piece 232, and the lower surface of the moving ceramic piece 231 is attached to the upper surface of the supporting ceramic piece 234. In other words, the moving ceramic piece 231 is clamped on the fixed porcelain piece 232 And between the moving ceramic piece 231. Setting the side of the supporting ceramic piece 234 in contact with the moving ceramic piece 231 as a smooth surface can make the frictional force of the moving ceramic piece 231 smaller during the rotation process, which is conducive to the smooth rotation of the moving ceramic piece 231 .

In an optional embodiment, the supporting tile 234 is a hollow ring structure. In this way, the drainage hole 233 of the moving ceramic piece 231 is partially or completely overlapped with the drainage hole 233 of the fixed ceramic piece 232, and when the water outlet channel is partially or completely connected, water can be discharged through the hollow supporting ceramic piece 234 .

In other optional embodiments, the shape and structure of the supporting tile 234 and the moving tile 231 are the same. That is, the support tile 234 also has a drainage hole 233. When the drainage hole 233 of the moving tile 231 does not overlap with the drainage hole of the fixed tile 232, the drainage hole of the supporting tile 234 does not overlap with the drainage hole of the moving tile 231. When the drainage hole 233 of the moving tile 231 coincides with the drainage hole 233 of the fixed tile 232, the drainage hole 233 of the supporting tile 234 also coincides with the drainage hole of the moving tile 231.

In a specific embodiment of the present utility model, the sewage pipe further includes: a second sealing ring 80 . The upper end of the valve cover 24 is recessed downward to form an engaging groove 241 for matching with the second sealing ring 80 . In this way, water seepage at the joint between the valve cover and the drain valve pipe section 23 of the 24 can be prevented, and the sealing performance of the sewage pipe 20 can be improved.

In a further optional implementation example, the second sealing ring 80 includes: an annular sealing rib and a flat plate. The annular sealing rib is snapped into the slot. The lower surface of the flat plate is attached to the upper end surface of the valve cover 24 , and the upper surface of the flat plate cooperates with the smooth surface of the supporting tile 234 . Thereby, the sealing performance of the blowdown pipe 20 can be further improved.

In some other embodiments of the present utility model, the drain valve further includes: a handle 26 and an extension tube 27, the handle 26 is rotatably connected to the knob 25 and has a drainage channel communicated with the valve chamber, and the extension tube 27 is connected to the handle 26 and is connected to the valve chamber. The drainage channels are connected. That is, the user can turn the handle 26 by hand to drive the knob to rotate, so that the knob 25 drives the rotation of the tile 231 to realize the conduction or closure of the water outlet channel.

Other configurations of the water heater 100 according to the present invention are well understood by those skilled in the art, and will not be repeated here.

In the description of the present utility model, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "bottom", "inner" and "outer" are based on the orientations or positions shown in the accompanying drawings. The relationship is only for the convenience of describing the utility model and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the utility model.

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

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

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be construed as limitations of the present invention. The above-mentioned embodiments can be changed, modified, replaced and modified within the scope of the present utility model under the principle and purpose.

Claims (14)

1. A water heater, characterized in that, comprising: an inner tank, the inner tank has a sewage outlet; A sewage pipe, the sewage pipe is connected to the sewage outlet, and the sewage pipe includes: A drain valve pipe section, the drain valve pipe section has a water outlet passage connected to the sewage outlet, a drain valve is installed in the drain valve pipe section, a valve cavity is formed in the drain valve pipe section, and the surrounding wall of the drain valve pipe section forms There is a chute extending along its circumferential direction and communicating with the valve cavity, and the drain valve includes: The fixed ceramic piece and the movable ceramic piece radially installed along the pipe section of the drain valve, the movable ceramic piece and the fixed ceramic piece are provided with drain holes that pass through the upper and lower surfaces of the movable ceramic piece and the fixed ceramic piece, and the drain holes are connected to the upper and lower surfaces of the fixed ceramic piece. The valve cavity is connected to form a water outlet channel, the fixed ceramic piece is fixed in position relative to the valve cavity, the moving ceramic piece is rotatably installed in the valve cavity, and the outer peripheral wall of the moving ceramic piece is provided with a first connecting part; A knob, the knob is rotatably arranged around the outer peripheral surface of the drain valve pipe section and is opposite to the chute, the inner peripheral surface of the knob is provided with a second connecting portion, and the second connecting portion is connected to the The first connecting part cooperates, and the knob drives the moving ceramic piece to rotate between the first position and the second position. When the moving ceramic piece is in the first position, the water outlet channel is connected. When the tile is in the second position, the drainage holes of the movable tile and the fixed tile cannot be connected, the water outlet channel is closed, and the thickness of the knob is less than or equal to 3.5 mm; A valve cover with a channel, the valve cover is connected to the lower part of the pipe wall of the drain valve to limit the degree of freedom of the moving ceramic piece and the fixed ceramic piece in the axial direction, the channel and the valve cavity connected. 2 . The water heater according to claim 1 , wherein the knob is a circular ring, and the circular ring is formed by splicing at least two arc-shaped segments. 3. The water heater according to claim 2, wherein the knob is composed of a first arc segment and a second arc segment, and the end of the first arc segment has a first buckle structure or a second As for the fastening structure, the end of the second arc segment has the second fastening structure or the first fastening structure matched with the first fastening structure or the second fastening structure. 4. The water heater according to claim 3, wherein the first fastening structure is a T-shaped sinker, the first fastening structure is a T-shaped protrusion, and the T-shaped protrusion sinks into the bottom. connected to the T-shaped sinker. 5. The water heater according to claim 2, characterized in that the knob is formed by splicing a first arc segment and a second arc segment, and the circumference of the first arc segment is the total circumference of the ring three-quarters of the length, and the circumference of the second arc segment is one-fourth of the total circumference of the ring. 6. The water heater according to claim 5, characterized in that, the inner peripheral surface of the first arc section is provided with two second connecting parts, and the connecting line between the two second connecting parts and the The diameters of the circular rings coincide, and the peripheral wall of the pipe section of the drain valve is provided with two slide grooves, and the two slide grooves are arranged symmetrically with respect to the central axis of the pipe section of the drain valve. 7. The water heater according to claim 6, characterized in that, the notch of the first connecting part is formed radially inwardly along the peripheral surface of the moving ceramic piece, and the second The connecting portion is a protrusion, and the protrusion is formed extending radially inward along the inner peripheral surface of the knob. 8. The water heater according to claim 1, wherein the sewage pipe further comprises: The extension rod pipe section extending into the inner container, the side wall of the extension rod pipe section is formed with a water outlet hole, the water in the inner container enters the sewage pipe through the water outlet hole and is discharged, and the lowest end surface of the water outlet hole lower than the inner bottom wall of the inner container or flush with the inner bottom wall of the inner container; A fixed connection pipe section for connecting with the sewage outlet of the inner tank, the fixed connection pipe section is connected to the lower part of the extension rod pipe section, and the fixed connection pipe section communicates with both the valve cavity and the water outlet hole. 9. The water heater according to claim 8, wherein the pipe section of the extension rod is a U-shaped frame, and the U-shaped frame is configured with at least two symmetrical water outlet holes, and the longitudinal section of the water outlet holes is square. 10. The water heater according to claim 9, wherein the pipe section of the extension rod comprises: a first connecting arm and a second connecting arm, the lower ends of the first connecting arm and the second connecting arm are connected to the upper end of the fixed connecting pipe section; A mounting plate, the mounting plate is connected to the upper ends of the first connecting arm and the second connecting arm, and a mounting hole is formed on the mounting plate, the water heater also includes a magnesium rod, one end of the magnesium rod installed in the mounting hole. 11. The water heater according to claim 1, characterized in that, the drain valve further comprises: a supporting tile, the supporting tile is radially installed in the valve cavity for supporting the fixed tile and The moving ceramic piece, wherein, the contact surface between the supporting ceramic piece and the moving porcelain piece is a smooth surface. 12. The water heater according to claim 11, characterized in that, the supporting ceramic piece is a hollow ring structure or the shape and structure of the supporting ceramic piece and the moving ceramic piece are the same. 13. The water heater according to claim 1, wherein the diameter of the knob is larger than 3MM and smaller than 5MM. 14. The water heater according to claim 1, wherein a plurality of reinforcing ribs are provided on the outer peripheral surface of the knob.