A water inlet pipe for a water heater with an externally wrapped buffer umbrella
By designing a buffer umbrella structure on the water inlet pipe of the water heater, the buffer umbrella seals the upper pipe opening and forms a plug-in cavity inside the umbrella, which solves the problem of high-pressure water flow disturbing the hot water layer and achieves a better hot water output effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 蒋琪峰
- Filing Date
- 2025-06-21
- Publication Date
- 2026-05-26
AI Technical Summary
The reason why storage-type electric water heaters have poor hot water output is that the cold water sprayed from the high-pressure tap water can easily disturb the hot water layer inside the tank, causing cold water to mix into the upper layer of hot water and affecting the water output.
An externally-mounted buffer umbrella-shaped water inlet pipe for a water heater was designed. The upper end of the inlet pipe has an outlet hole, the buffer umbrella seals the upper pipe opening, and forms a plug-in cavity inside the umbrella. The upper end of the inlet pipe is fitted into the plug-in cavity. The buffer umbrella buffers the water flow and slows down the water flow speed.
The buffer effect of the umbrella reduces the flow rate of cold water into the inner tank, improving the hot water output of the storage-type electric water heater and ensuring the quality of hot water.
Smart Images
Figure CN224284954U_ABST
Abstract
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 externally wrapped buffer umbrella design. 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 invention is to overcome the shortcomings of the prior art and provide a water inlet pipe for a water heater with an externally wrapped 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] This utility model discloses an externally-mounted buffer umbrella-type water inlet pipe for a water heater, comprising a connecting seat and an inlet pipe. The lower end of the inlet pipe is fixedly connected to the connecting seat. The upper end of the inlet pipe has an inlet outlet hole. The upper part of the inlet pipe is covered with a buffer umbrella, which has an umbrella top. The inlet pipe has an upper end face, which is abutted against the lower side of the umbrella top. The inlet pipe has an upper opening, which is closed by the umbrella top. An insertion cavity is formed inside the upper end of the buffer umbrella, and the upper end of the inlet pipe is adapted to be disposed in the insertion cavity. The insertion cavity is located above the inlet outlet hole.
[0006] 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.
[0007] Preferably, the upper end of the inner cover is integrally connected to the umbrella top, and the insertion cavity is located inside the inner cover.
[0008] 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 retaining spring.
[0009] 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.
[0010] 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, a buffer umbrella is provided on the upper part of the inlet pipe, the buffer umbrella has a top, the inlet pipe has an upper end face, the upper end face of the inlet pipe is attached to the lower side of the top, the inlet pipe has an upper opening, the top of the umbrella closes the upper opening, and a connecting cavity is formed inside the upper end of the buffer umbrella. The upper end of the inlet pipe is fitted into the connecting cavity, which is located above the outlet hole of the inlet pipe. This allows the buffer umbrella to buffer the water flow sprayed from the outlet hole, thus improving the hot water output of the storage-type electric water heater. The connection cavity at the upper end of the buffer umbrella, with the upper end of the inlet pipe fitted into it, simplifies the installation structure of the buffer umbrella and the inlet pipe, facilitating easy installation and connection. Attached Figure Description
[0011] 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.
[0012] 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.
[0013] 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.
[0014] Figure 4 for Figure 3 A partial structural diagram.
[0015] Figure 5 This is a partial three-dimensional cross-sectional view of the water inlet pipe of the water heater according to the first embodiment of the present utility model.
[0016] Figure 6 This is a partial cross-sectional structural diagram of the water inlet pipe of this utility model.
[0017] Figure 7 This is a cross-sectional structural diagram of the buffer umbrella according to the first embodiment of the present invention.
[0018] Figure 8 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.
[0019] Labeling: Connector 1; Internal thread mounting notch 101; Water inlet external thread connector 102; Water inlet pipe 2; Water inlet pipe annular groove 21; Upper convex ring 211; Conical guide surface 2111; Lower convex ring 212; Water inlet pipe outlet hole 201; Upper end pipe opening 202; Upper end face of water inlet pipe 203; Buffer umbrella 3; Umbrella top 301; Umbrella bottom opening 302; Insertion cavity 303; Inner cover 30; Inner cover outlet hole 3001; Annular groove shell 3002; Inner convex ring 3003; Inner buffer cavity 300; Snap ring 5. Detailed Implementation
[0020] The present invention will now be further described with reference to the accompanying drawings.
[0021] The water inlet pipe of the water heater with the externally wrapped buffer umbrella of this utility model, such as 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 2 As 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, the buffer umbrella 3 is an upright conical shell, and the water outlet 201 of the water inlet pipe is located inside the buffer umbrella 3, as shown. Figure 4 As shown, the buffer umbrella 3 has an umbrella top 301, and the water inlet pipe 2 has 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, as shown. Figure 2 and Figure 6 As shown, the water inlet pipe 2 has an upper pipe opening 202, such as Figure 4 As shown, the umbrella top 301 closes the upper end of the pipe opening 202, as... Figure 7 As shown, a insertion cavity 303 is formed in the upper end of the buffer umbrella 3, as... Figure 4 As shown, the upper end of the water inlet pipe 2 is fitted into the insertion cavity 303. That is, the insertion cavity 303 is circular (from a downward viewing angle). Therefore, the insertion cavity 303 fits the cylindrical shape of the upper end of the water inlet pipe 2. For example, the upper end of the water inlet pipe 2 is interference-fitted with the insertion cavity 303, thus fixing the upper end of the buffer umbrella 3 relative to the water inlet pipe 2. The insertion cavity 303 is located above the water outlet 201 of the water inlet pipe, preventing the inner wall of the insertion cavity 303 from sealing the water outlet 201. During the assembly 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, so that the upper end of the water inlet pipe 2 is inserted into the insertion cavity 303 until the umbrella top 301 contacts the upper end face 203 of the water inlet pipe. At this point, the upper end of the buffer umbrella 3 is essentially covering the upper end of the water inlet pipe 2. 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.
[0022] like Figure 3 As 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 into the buffer umbrella 3. The water flow is slowed down by the obstruction effect of the inner wall of the buffer umbrella 3. The water 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, and is discharged into the lower part of the inner tank of the storage electric water heater. Because the buffer umbrella 3 obstructs and buffers the water flow sprayed from the outlet hole 201 of the inlet pipe, the water discharged through the bottom opening 302 has a small flow velocity. Since the buffer umbrella 3 is an upright conical shell, the bottom opening 302 has a large water flow cross-sectional area. Therefore, although the flow velocity of the water discharged from the bottom opening 302 is 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 outer wall of the inlet pipe 2 and the upper end face 203 of the inlet pipe to install the positioning buffer umbrella 3, and simply seals the upper pipe opening 202 through the umbrella top 301, the installation structure of the buffer umbrella 3 and the inlet pipe 2 is simple, facilitating easy installation and connection between the buffer umbrella 3 and the inlet pipe 2.
[0023] Furthermore, such as Figure 4 , Figure 5 and Figure 8As 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 inner cover water outlet 3001 is staggered with the water inlet pipe water outlet 201. The water inlet pipe water 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, tap water sprayed from the water inlet pipe water outlet 201 First, the water enters the inner buffer chamber 300. The inner cover 30 obstructs the tap water sprayed from the water outlet 201 of the inlet pipe, thereby slowing down the water flow. Then, the water in the inner buffer chamber 300 is discharged through the water outlet 3001 of the inner cover to the space between the inner wall of the buffer umbrella 3 and the outer wall of the inner cover 30. The water flow is obstructed by the inner wall of the buffer umbrella 3. After that, the water flows downward to the umbrella bottom opening 302, thus providing a double buffering effect on the water flow sprayed from the water outlet 201 of the inlet pipe.
[0024] Furthermore, such as Figure 4 and Figure 8 As shown, the upper end of the inner cover 30 is integrally connected to the umbrella top 301, thus avoiding the need for a complex installation structure for the inner cover 30 and the umbrella top 301. The insertion cavity 303 is located inside the inner cover 30. More specifically, the cylindrical wall structure of the insertion cavity 303 is integrally set with the inner cover 30, and the top wall of the insertion cavity 303 is specifically the bottom of the umbrella top 301.
[0025] In some embodiments, such as Figure 4 and Figure 5 As shown, the lower end of the inner cover 30 has an annular groove shell 3002, and the outside of the water inlet pipe 2 has an inlet pipe annular groove 21. Specifically, as shown... Figure 6 As shown, an upper convex ring 211 and a lower convex ring 212 are formed on the outer wall of the water inlet pipe 2. A water inlet pipe annular groove 21 is located between the upper convex ring 211 and the lower convex ring 212. The water inlet pipe outlet 201 is located on the upper side of the water inlet pipe annular groove 21. Figure 4 and Figure 5 As shown, the annular groove shell 3002 is adapted to be disposed within the annular groove 21 of the water inlet pipe. The annular groove shell 3002 is adapted to be connected with a retaining spring 5, meaning that the retaining spring 5 engages with the annular groove shell 3002, so that the bottom of the annular groove shell 3002 is clamped between the retaining spring 5 and the annular groove 21 of the water inlet pipe, thus sealing the lower end of the inner buffer cavity 300. The inner cover 30 and the buffer umbrella 3 are an integral structure, and the inner cover 30 and the buffer umbrella 3 can be made of silicone rubber. During assembly, the buffer umbrella 3 is first elastically flipped upwards, then the inner cover 30 is placed over the upper end of the water inlet pipe 2, with the upper end of the water inlet pipe 2 inserted into the insertion cavity 303. The annular groove shell 3002 elastically opens, allowing it to pass over the upper protruding ring 211. Then, the annular groove shell 3002 is inserted into the annular groove 21 of the water inlet pipe, the retaining spring 5 is installed, and then the buffer umbrella 3 is flipped downwards to return to its original position. Figure 4As 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.
[0026] In some embodiments, such as Figure 8 As shown, an inner convex ring 3003 is formed at the lower end of the inner cover 30, and an inlet pipe annular groove 21 is formed on the outside of the inlet pipe 2. The inlet pipe outlet 201 is located on the upper side of the inlet pipe annular groove 21. The inner convex ring 3003 is adapted to fit inside the 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, thus the inner cover 30 has good elasticity, such as... Figure 6 As shown, a conical guide surface 2111 is formed on the upper side of the upper convex ring 211. When the buffer umbrella 3 is installed on the water inlet pipe 2, the buffer umbrella 3 covers the water inlet pipe 2 from top to bottom. The upper end of the water inlet pipe 2 first enters the inner cover 30. Then, the conical guide surface 2111 contacts and squeezes open the inner convex ring 3003. At the same time, the upper end of the water inlet pipe 2 is inserted into the insertion cavity 303. 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 externally wrapped 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 water inlet pipe (2) is provided with an upper end opening (202). The umbrella top (301) closes the upper end opening (202). The upper end of the buffer umbrella (3) is provided with a plug-in cavity (303). The upper end of the water inlet pipe (2) is adapted to be provided in the plug-in cavity (303). The plug-in cavity (303) is located above the water outlet hole (201).
2. The water inlet pipe of the water heater with an externally wrapped buffer umbrella as described in claim 1, characterized in that: 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).
3. The water inlet pipe of the water heater with an externally wrapped buffer umbrella as described in claim 2, characterized in that: The upper end of the inner cover (30) is integrally connected to the umbrella top (301), and the insertion cavity (303) is located inside the inner cover (30).
4. The water inlet pipe of the water heater with an externally wrapped buffer umbrella as described in claim 2 or 3, 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 retaining ring (5).
5. The water inlet pipe of the water heater with an externally wrapped buffer umbrella as described in claim 2 or 3, 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).