Water heater inlet pipe with built-in buffer umbrella

Abstract

The utility model discloses a water heater water inlet pipe of built -in buffer umbrella, including connecting seat and water inlet pipe, the lower extreme of water inlet pipe is fixedly connected with connecting seat, and the upper end part of water inlet pipe forms and has water inlet pipe water hole, and the upper portion cover of water inlet pipe is equipped with buffer umbrella, and buffer umbrella forms and has umbrella top, and water inlet pipe forms and has water inlet pipe upper end surface, and water inlet pipe upper end surface is close to the downside of umbrella top, and buffer umbrella is equipped with positioning pin, and positioning pin forms and has sealed bolt part, and sealed bolt part passes through umbrella top, and water inlet pipe forms and has upper end pipe orifice, and sealed bolt part is adapted to be inserted in the upper end pipe orifice. The utility model discloses water heater water inlet pipe is favorable to the promotion water -storage type electric water heater's hot water effect, is favorable to buffer umbrella and water inlet pipe convenient installation connection.

Description

Technical Field

[0001] This utility model relates to the field of water inlet pipes for water heaters, specifically to a water inlet pipe for water heaters with an internal buffer umbrella. Background Technology

[0002] Currently, storage-type electric water heaters are equipped with a water inlet pipe, such as the "Water Inlet Pipe of Electric Water Heater" in Chinese Utility Model Patent Publication No. CN201837067U. The upper cylindrical wall of the inlet pipe has several outlet holes. The inlet pipe extends upwards into the lower part of the inner tank of the storage-type electric water heater. The upper end of the outlet pipe is located inside the upper part of the inner tank. Because the hotter water is located at a higher position, the water entering the upper end of the outlet pipe is at a higher temperature. When a user uses the storage-type electric water heater for showering, if the tap water pressure is high, the water jet from the outlet hole has a high velocity. The cold water jet can easily disturb the hot water layer in the inner tank, meaning cold water can easily mix into the upper layer of hot water in the inner tank, resulting in poor hot water output from the storage-type electric water heater. Therefore, the existing water inlet pipe technology needs improvement. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a water inlet pipe for a water heater with an internal buffer umbrella, which is beneficial to improving the hot water output effect of a storage-type electric water heater.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] The water inlet pipe of the water heater with an internal buffer umbrella disclosed in this utility model includes a connecting seat and a water inlet pipe. The lower end of the water inlet pipe is fixedly connected to the connecting seat. The upper end of the water inlet pipe forms a water outlet hole. The upper part of the water inlet pipe is covered with a buffer umbrella, which has an umbrella top. The water inlet pipe has an upper end face, which is attached to the lower side of the umbrella top. The buffer umbrella is provided with a positioning pin, which has a sealing pin portion that passes through the umbrella top. The water inlet pipe has an upper pipe opening, and the sealing pin portion is adapted to be inserted into the upper pipe opening.

[0006] Preferably, the umbrella top and the positioning pin are separate structures.

[0007] Preferably, the positioning pin has a flange portion, which is integrally connected to the upper end of the sealing pin portion, and the flange portion abuts against the upper side of the umbrella top.

[0008] Preferably, the lower end of the sealing pin is provided with a toothed plate, and the end of the toothed plate contacts and connects to the inner wall of the water inlet pipe.

[0009] Preferably, the upper end of the sealing pin is formed with a neck, the neck is adapted to pass through the umbrella top, and the neck is adapted to be connected with a first retaining spring, the first retaining spring being abutted against the upper side of the umbrella top.

[0010] Preferably, the upper end of the sealing pin is integrally connected to the umbrella top.

[0011] Preferably, an inner cover is formed inside the upper end of the buffer umbrella, an inner cover water outlet is formed on the inner cover, the water inlet pipe water outlet is located inside the inner cover, and an inner buffer cavity is formed between the inner wall of the inner cover and the outer wall of the water inlet pipe.

[0012] Preferably, the lower end of the inner cover is formed with an annular groove shell, the outside of the water inlet pipe is formed with an inlet pipe annular groove, the water outlet of the water inlet pipe is located on the upper side of the inlet pipe annular groove, the annular groove shell is adapted to be disposed in the inlet pipe annular groove, and the annular groove shell is adapted to be connected with a second retaining spring.

[0013] Preferably, the lower end of the inner cover is formed with an inner convex ring, the outside of the water inlet pipe is formed with a water inlet pipe annular groove, the water outlet of the water inlet pipe is located on the upper side of the water inlet pipe annular groove, and the inner convex ring is adapted to be disposed in the water inlet pipe annular groove.

[0014] Compared with the prior art, the advantages of this utility model are as follows: By setting an inlet outlet hole at the upper end of the inlet pipe, and a buffer umbrella covering the upper part of the inlet pipe with an umbrella top, the inlet pipe has an upper end face that rests against the lower side of the umbrella top. This buffer umbrella effectively cushions the water flow from the outlet hole, thus improving the hot water output of the storage-type electric water heater. Furthermore, by incorporating a positioning pin with a sealing pin portion that passes through the umbrella top, and an upper opening in the inlet pipe, the sealing pin portion is fitted into the upper opening. This simplifies the installation structure of the buffer umbrella and the inlet pipe, facilitating easy installation and connection. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the water inlet pipe of the water heater according to the first embodiment of this utility model.

[0016] Figure 2 This is an exploded view of the water inlet pipe of the water heater according to the first embodiment of this utility model.

[0017] Figure 3 This is a cross-sectional view of the water inlet pipe of the water heater according to the first embodiment of this utility model.

[0018] Figure 4 for Figure 3 A partial structural diagram.

[0019] Figure 5 This is a partial cross-sectional structural diagram of the water inlet pipe of the water heater according to the second embodiment of this utility model.

[0020] Figure 6 This is a partial cross-sectional structural diagram of the water inlet pipe of the water heater according to the third embodiment of this utility model.

[0021] Figure 7 This is a partial cross-sectional structural diagram of the water inlet pipe of the water heater according to the fourth embodiment of this utility model.

[0022] Figure 8 This is a partial cross-sectional structural diagram of the water inlet pipe of the water heater according to the fifth embodiment of this utility model.

[0023] Figure 9 This is a three-dimensional partial structural diagram of the water inlet pipe of the water heater according to the fifth embodiment of this utility model.

[0024] Figure 10 This is a partial cross-sectional structural diagram of the water inlet pipe of the water heater according to the sixth embodiment of this utility model.

[0025] Labeling: Connector 1; Internal thread mounting notch 101; Water inlet external thread connector 102; Water inlet pipe 2; Water inlet pipe annular groove 21; Water inlet pipe outlet 201; Upper pipe opening 202; Upper end face of water inlet pipe 203; Buffer umbrella 3; Umbrella top 301; Umbrella bottom opening 302; Positioning pin 31; Sealing pin part 311; Reverse toothed plate 3111; Flange part 312; Head 313; Neck 314; Inner cover 30; Inner cover outlet 3001; Annular groove shell 3002; Inner convex ring 3003; Inner buffer cavity 300; First retaining ring 4; Second retaining ring 5. Detailed Implementation

[0026] The present invention will now be further described with reference to the accompanying drawings.

[0027] The water inlet pipe of the water heater with an internally mounted buffer umbrella, as described in this utility model, Figures 1 to 4 As shown, the device includes a connecting seat 1 and a water inlet pipe 2. The lower end of the water inlet pipe 2 is fixedly connected to the connecting seat 1. Specifically, the upper part of the connecting seat 1 has an internal thread mounting recess 101, which is used to screw onto the water inlet of a storage-type electric water heater. For example, the lower end of the water inlet pipe 2 is screwed onto the internal stepped structure of the connecting seat 1, thereby fixing the water inlet pipe 2 relative to the connecting seat 1. The lower end of the connecting seat 1 has an external threaded connector 102, which is used to connect to a tap water pipe and connects to the water inlet pipe 2. Figure 2As shown, an inlet pipe outlet 201 is formed at the upper end of the inlet pipe 2. Specifically, the inlet pipe outlet 201 is formed on the cylindrical wall of the inlet pipe 2. The number of inlet pipe outlets 201 can be four. The two lower inlet pipe outlets 201 are symmetrical about the central axis of the inlet pipe 2, and the two upper inlet pipe outlets 201 are also symmetrical about the central axis of the inlet pipe 2. The two upper inlet pipe outlets 201 and the two lower inlet pipe outlets 201 are circumferentially offset by 90 degrees. Figure 1 and Figure 3 As shown, the upper part of the water inlet pipe 2 is covered with a buffer umbrella 3, that is to say, the buffer umbrella 3 is an upright conical shell, such as... Figure 4 As shown, the buffer umbrella 3 has an umbrella top 301, as... Figure 2 As shown, the water inlet pipe 2 has an upper end face 203, such as Figure 4 As shown, the upper end face 203 of the water inlet pipe abuts against the lower side of the umbrella top 301. The buffer umbrella 3 is provided with a positioning pin 31, which forms a sealing pin portion 311. The sealing pin portion 311 passes through the umbrella top 301, as shown. Figure 2 As shown, the water inlet pipe 2 has an upper pipe opening 202, such as Figure 4 As shown, the sealing pin 311 is fitted into the upper pipe opening 202, meaning that the sealing pin 311 seals the upper pipe opening 202. Therefore, the structure of the buffer umbrella 3 for connecting the water inlet pipe 2 is internally installed within the water inlet pipe 2. Specifically, the sealing pin 311 and the upper pipe opening 202 are interference-fitted, thereby fixing the buffer umbrella 3 and the water inlet pipe 2 relatively. During the assembly process of the buffer umbrella 3 and the water inlet pipe 2, the buffer umbrella 3 is placed over the upper part of the water inlet pipe 2 from top to bottom, and the sealing pin 311 is inserted into the upper pipe opening 202 until the umbrella top 301 contacts the upper end face 203 of the water inlet pipe. Figure 3 As shown, for example, the outer diameter of the lower end of the buffer umbrella 3 is smaller than the inner diameter of the internal thread mounting notch 101, and the buffer umbrella 3 can elastically retract and deform, thus allowing the buffer umbrella 3 to extend into the inner tank of the storage-type electric water heater.

[0028] like Figure 3 and Figure 4As shown by the dotted arrow, tap water enters the connector 1 through the inlet threaded connector 102, then flows upward into the inlet pipe 2. The water then flows out through the outlet hole 201 of the inlet pipe into the buffer umbrella 3. Specifically, the water is ejected onto the inner wall of the buffer umbrella 3, and then flows downward between the inner wall of the buffer umbrella 3 and the outer wall of the inlet pipe 2 to the bottom opening 302. Thus, the water is discharged into the lower part of the inner tank of the storage electric water heater. Because the buffer umbrella 3 impedes and buffers the water flow ejected from the outlet hole 201 of the inlet pipe, the water discharged through the bottom opening 302 has a relatively low flow velocity. Furthermore, because the buffer umbrella 3 is an upright conical shell, the bottom opening 302 has a large cross-sectional area for water flow. Therefore, although the flow velocity of the water discharged from the bottom opening 302 is relatively slow, the flow rate is sufficient for bathing. Because the flow rate of tap water flowing into the inner tank from the water inlet pipe of this utility model is relatively slow, it can prevent cold water from easily mixing into the upper layer of hot water in the inner tank, thus improving the hot water output of the storage-type electric water heater. Since this utility model utilizes the upper end port 202 of the water inlet pipe 2 to install and connect the buffer umbrella 3, and seals the upper end port 202 with the sealing pin part 311, the installation structure of the buffer umbrella 3 and the water inlet pipe 2 is simple, facilitating easy installation and connection between the buffer umbrella 3 and the water inlet pipe 2.

[0029] In some embodiments, such as Figures 4 to 6 As shown, the umbrella top 301 and the positioning pin 31 are separate structures, that is, the main body of the buffer umbrella 3 and the positioning pin 31 are separate structures. Therefore, the main body of the buffer umbrella 3 and the positioning pin 31 can be made of different materials. For example, the main body of the buffer umbrella 3 can be made of silicone rubber, while the positioning pin 31 can be made of ABS.

[0030] In some embodiments, such as Figure 4 and Figure 5 As shown, in order to prevent the umbrella top 301 from shifting upward, the positioning pin 31 has a flange portion 312, which is integrally connected to the upper end of the sealing pin portion 311, and the flange portion 312 is attached to the upper side of the umbrella top 301; the upper end of the positioning pin 31 may have a head 313, which may be square and may be located on the upper side of the flange portion 312.

[0031] In some embodiments, such as Figure 5As shown, the lower end of the sealing pin 311 is provided with a toothed plate 3111. The end of the toothed plate 3111 contacts the inner wall of the water inlet pipe 2. Therefore, when the sealing pin 311 moves upward relative to the water inlet pipe 2, the toothed plate 3111 hooks and scrapes the inner wall of the water inlet pipe 2, thereby making the upward movement of the sealing pin 311 more difficult and conducive to the stable installation of the positioning pin 31 and the water inlet pipe 2. The toothed plate 3111 is V-shaped and can be made of stainless steel. The toothed plate 3111 and the sealing pin 311 are integrally injection molded.

[0032] In some embodiments, such as Figure 6 As shown, a neck 314 is formed at the upper end of the sealing pin portion 311, meaning that the neck 314 is a portion with a relatively small outer diameter of the sealing pin portion 311. The neck 314 is adapted to pass through the umbrella top 301. Specifically, the umbrella top 301 has a central hole, and the neck 314 is adapted to connect to the central hole. A first retaining spring 4 is also adapted to connect to the neck 314, meaning that the first retaining spring 4 engages with the neck 314 and rests against the upper side of the umbrella top 301. Therefore, the upward movement of the umbrella top 301 is blocked by the first retaining spring 4. During the process of inserting the sealing pin portion 311 into the upper end port 202, the central hole can elastically open.

[0033] In some embodiments, such as Figure 7 , Figure 8 and Figure 10 As shown, the upper end of the sealing pin 311 is integrally connected to the umbrella top 301. In other words, the main body of the buffer umbrella 3 and the positioning pin 31 are integral structures, which is equivalent to the umbrella top 301 having a central hole. The upper end of the sealing pin 311 is located in the central hole. However, the upper end of the sealing pin 311 is integrally connected to the hole wall of the central hole, which helps to reduce the number of parts.

[0034] In some embodiments, such as Figures 8 to 10 As shown, an inner cover 30 is formed inside the upper end of the buffer umbrella 3, and an inner cover water outlet 3001 is formed on the inner cover 30. The water inlet pipe outlet 201 is located inside the inner cover 30, that is, the upper end of the water inlet pipe 2 is located inside the inner cover 30. An inner buffer cavity 300 is formed between the inner wall of the inner cover 30 and the outer wall of the water inlet pipe 2. Thus, the tap water sprayed from the water inlet pipe outlet 201 first enters the inner buffer cavity 300, which slows down the water flow. Then, the water in the inner buffer cavity 300 is discharged through the inner cover water outlet 3001 to the space between the inner wall of the buffer umbrella 3 and the outer wall of the inner cover 30. After that, the water flows downward to the umbrella bottom opening 302, thus achieving a double buffering effect on the water flow sprayed from the water inlet pipe outlet 201.

[0035] In some embodiments, such as Figure 8 and Figure 9As shown, the lower end of the inner cover 30 has an annular groove shell 3002, the outside of the water inlet pipe 2 has an inlet pipe annular groove 21, the water outlet 201 of the water inlet pipe is located on the upper side of the inlet pipe annular groove 21, the annular groove shell 3002 is adapted to be disposed in the inlet pipe annular groove 21, and the annular groove shell 3002 is adapted to be connected with a second retaining spring 5, that is, the second retaining spring 5 engages with the annular groove shell 3002, so that the bottom of the annular groove shell 3002 is clamped between the second retaining spring 5 and the inlet pipe annular groove 21, thus sealing the lower end of the inner buffer cavity 300. The inner wall of the upper end of the inner cover 30 is adapted to be attached to the outer wall of the water inlet pipe 2, and the upper end of the inner cover 30 is connected to the umbrella top 301 as a whole, that is, the inner cover 30 and the buffer umbrella 3 are an integral structure, and the inner cover 30 can be made of silicone rubber. During assembly, the buffer umbrella 3 is first elastically flipped upwards, then the inner cover 30 is fitted over the upper end of the water inlet pipe 2, and the sealing pin 311 is inserted into the upper pipe opening 202. During this process, the annular groove shell 3002 can elastically open, and then the annular groove shell 3002 elastically returns to its original position and contracts, fitting into the annular groove 21 of the water inlet pipe. The second retaining spring 5 is then installed, and finally the buffer umbrella 3 is flipped downwards to its original position. Figure 8 As shown, the water inlet pipe annular groove 21 prevents the inner cover 30 from shifting up and down, which facilitates the reliable installation of the buffer umbrella 3 and the water inlet pipe 2, and further prevents the buffer umbrella 3 from detaching from the water inlet pipe 2.

[0036] In some embodiments, such as Figure 10 As shown, the lower end of the inner cover 30 has an inner convex ring 3003, and the outside of the water inlet pipe 2 has a water inlet pipe annular groove 21. The water outlet 201 of the water inlet pipe is located on the upper side of the water inlet pipe annular groove 21. The inner convex ring 3003 is adapted to be placed in the water inlet pipe annular groove 21, thus sealing the lower end of the inner buffer cavity 300. The inner cover 30 and the buffer umbrella 3 are an integral structure. The inner cover 30 can be made of silicone rubber, so the inner cover 30 has good elasticity. The water inlet pipe 2 has a conical guide surface formed on the upper side of the water inlet pipe annular groove 21. When the buffer umbrella 3 is installed on the water inlet pipe... At time 2, the buffer umbrella 3 is placed from top to bottom over the water inlet pipe 2. The upper end of the water inlet pipe 2 is first inserted into the inner cover 30. Then, the conical guide surface contacts and squeezes open the inner convex ring 3003. At the same time, the sealing pin 311 is inserted into the upper end pipe opening 202. When the upper end face 203 of the water inlet pipe contacts the umbrella top 301, the inner convex ring 3003 is located in the water inlet pipe annular groove 21. Through the elastic reset and contraction of the inner convex ring 3003, the inner convex ring 3003 enters the water inlet pipe annular groove 21. Thus, the water inlet pipe annular groove 21 prevents the inner cover 30 from moving up and down.

Claims

1. A water inlet pipe for a water heater with an internal buffer umbrella, comprising a connector (1) and an inlet pipe (2), wherein the lower end of the inlet pipe (2) is fixedly connected to the connector (1), characterized in that: The upper end of the water inlet pipe (2) is provided with a water outlet hole (201). The upper part of the water inlet pipe (2) is covered with a buffer umbrella (3). The buffer umbrella (3) is provided with an umbrella top (301). The water inlet pipe (2) is provided with an upper end face (203). The upper end face (203) of the water inlet pipe is attached to the lower side of the umbrella top (301). The buffer umbrella (3) is provided with a positioning pin (31). The positioning pin (31) is provided with a sealing pin part (311). The sealing pin part (311) passes through the umbrella top (301). The water inlet pipe (2) is provided with an upper pipe opening (202). The sealing pin part (311) is adapted to be inserted into the upper pipe opening (202). The upper end of the sealing pin (311) is integrally connected to the umbrella top (301); An inner cover (30) is formed inside the upper end of the buffer umbrella (3), and an inner cover water outlet (3001) is formed on the inner cover (30). The water outlet (201) of the water inlet pipe is located inside the inner cover (30), and an inner buffer cavity (300) is formed between the inner wall of the inner cover (30) and the outer wall of the water inlet pipe (2).

2. The water inlet pipe of the water heater with an internal buffer umbrella as described in claim 1, characterized in that: The umbrella top (301) and the positioning pin (31) are separate structures.

3. The water inlet pipe of the water heater with an internal buffer umbrella as described in claim 2, characterized in that: The positioning pin (31) has a flange (312) which is integrally connected to the upper end of the sealing pin (311) and the flange (312) is attached to the upper side of the umbrella top (301).

4. The water inlet pipe of the water heater with an internal buffer umbrella as described in claim 3, characterized in that: The lower end of the sealing pin (311) is provided with a toothed plate (3111), and the end of the toothed plate (3111) contacts and connects to the inner wall of the water inlet pipe (2).

5. The water inlet pipe of the water heater with an internal buffer umbrella as described in claim 2, characterized in that: The upper end of the sealing pin (311) is formed with a neck (314), the neck (314) is adapted to pass through the umbrella top (301), and the neck (314) is adapted to be connected with a first retaining spring (4), the first retaining spring (4) abutting against the upper side of the umbrella top (301).

6. The water inlet pipe of the water heater with an internal buffer umbrella as described in claim 1, characterized in that: The lower end of the inner cover (30) is formed with an annular groove shell (3002), the outside of the water inlet pipe (2) is formed with an inlet pipe annular groove (21), the water outlet hole (201) of the water inlet pipe is located on the upper side of the inlet pipe annular groove (21), the annular groove shell (3002) is adapted to be disposed in the inlet pipe annular groove (21), and the annular groove shell (3002) is adapted to be connected with a second retaining spring (5).

7. The water inlet pipe of the water heater with an internal buffer umbrella as described in claim 6, characterized in that: The lower end of the inner cover (30) is formed with an inner convex ring (3003), the outside of the water inlet pipe (2) is formed with a water inlet pipe annular groove (21), the water outlet hole (201) of the water inlet pipe is located on the upper side of the water inlet pipe annular groove (21), and the inner convex ring (3003) is adapted to be disposed in the water inlet pipe annular groove (21).

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