Universal water heater for kitchen bath

Abstract

A kitchen and bath universal water heater comprises an inner container, an electric heating device, a water inlet pipe and a water outlet pipe, at least two containing cavities are formed in the inner container, the upper portions of the adjacent containing cavities are communicated with each other through an upper communication opening, and the lower portions of the adjacent containing cavities are communicated with each other through a lower communication opening; one end of the electric heating device is fixed to the inner container, and the other end of the electric heating device extends into all the containing cavities through the lower communicating opening. A hot water inlet is formed in the top of the water outlet pipe; the bottom end of the water inlet pipe and the bottom end of the water outlet pipe are both fixed to the inner container, and the water inlet pipe and the water outlet pipe extend into the two containing cavities respectively. A preheating water channel is formed between the inner wall of the flow guide pipe and the outer wall of the water inlet pipe, the upper end of the preheating water channel is communicated with the cold water outlet in the top end of the water inlet pipe, and the lower end of the preheating water channel is communicated with the preheating outlet. According to the utility model, the hot water yield can be increased to 1.5-2 times, so that the requirement of a user on a large water yield is met, and the use cost is reduced by reducing the heating time and the energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, specifically to a universal water heater for both kitchen and bathroom use. Background Technology

[0002] Miniature water heaters, also known as small kitchen water heaters, are widely used in homes and commercial settings due to their compact size, easy installation, and ability to quickly provide hot water. Currently, most miniature water heaters on the market have a square design and are fixed to the sink inside a kitchen cabinet using a seated installation method. While meeting users' water supply needs, this design limitation necessitates increasing the size of the unit, resulting in it occupying a significant amount of kitchen space and reducing space utilization efficiency. Furthermore, the relatively enclosed space inside a kitchen cabinet with poor ventilation makes the miniature water heater susceptible to moisture, severely impacting its lifespan, increasing replacement costs and repair frequency, and potentially causing short circuits and other malfunctions, posing serious safety hazards and threatening users' personal safety and property. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a universal water heater for kitchens and bathrooms.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A universal kitchen and bathroom water heater includes an inner tank, an electric heating device, an inlet pipe, and an outlet pipe. The inner tank has at least two cavities, with the upper parts of adjacent cavities connected to each other via an upper connecting port, and the lower parts of adjacent cavities connected to each other via a lower connecting port. One end of the electric heating device is fixed to the inner tank, and the other end extends into all cavities through the lower connecting port. The outlet pipe has a hot water inlet at its top end, communicating with the interior of the outlet pipe.

[0006] The bottom ends of the inlet pipe and the outlet pipe are fixed to the inner liner, and the inlet pipe and the outlet pipe extend into the two cavities respectively;

[0007] The inlet pipe is fitted with a guide pipe. The upper end of the guide pipe is closed, and the lower end is a preheating outlet. A preheating channel is formed between the inner wall of the guide pipe and the outer wall of the inlet pipe. The upper end of the preheating channel is connected to the cold water outlet at the top of the inlet pipe, and the lower end is connected to the preheating outlet.

[0008] In this invention, the preheating outlet is higher than the lower connecting port and the electric heating device.

[0009] In this invention, the top of the guide tube is fixed to the wall of the inner liner, and the top of the guide tube is sealed through the wall of the inner liner.

[0010] In this utility model, the universal kitchen and bathroom water heater also includes a control valve, wherein the tap water outlet of the control valve is connected to the cold water inlet of the inlet pipe, and the hot water inlet of the control valve is connected to the hot water outlet of the outlet pipe.

[0011] In this invention, the mixing water outlet of the control valve is connected to a universal nozzle.

[0012] In this invention, the control valve is a thermostatic valve with an anti-electric shock wall.

[0013] In this utility model, the universal kitchen and bathroom water heater also includes a heat insulation layer wrapped around the outside of the inner tank.

[0014] In this utility model, the universal kitchen and bathroom water heater also includes an outer shell, and the inner tank, insulation layer and control valve are all located inside the outer shell.

[0015] In this utility model, the bottom of the outer shell is an extended shell, the interior of the extended shell serves as a mounting cavity, and the mounting cavity is equipped with a control device for controlling the operation of the electric heating device and the control valve. The control device is connected to a switch control board located outside the extended shell.

[0016] In this utility model, a hanging bracket is provided on the top of the outer shell. The hanging bracket includes two connecting arms. The lower ends of the two connecting arms are connected to the top of the outer shell, and the upper ends of the two connecting arms are connected together to form a hanging hole. The two connecting arms and the top of the outer shell form a triangular structure.

[0017] The beneficial effects of this invention are as follows: A preheating channel is formed by an inlet pipe and a guide pipe. Tap water flows into the inlet pipe from the cold water inlet at the bottom and then into the preheating channel from the cold water outlet. During the process of the tap water passing through the preheating channel, the hot water in the container heats the guide pipe. The heat on the guide pipe preheats the tap water passing through the preheating channel. Then, the water flows from the preheating outlet at the bottom to the bottom of each cavity, where it is directly heated by the electric heating device for targeted heating, achieving rapid water temperature rise. Since the tap water already has a certain initial temperature after preheating, the electric heating device does not need to start heating from room temperature. This significantly shortens the heating time to the target temperature, reduces power loss during the heating process, and improves the hot water production efficiency per unit time. At the same time, the newly generated hot water naturally rises due to its decreased density caused by the increased temperature. During the upward flow, it generates power to push the existing hot water in the cavity to flow synchronously towards the hot water inlet. Through this dynamic cycle of "heating-pushing-displacement," the hot water output of the water heater can be increased by 1.5-2 times without increasing the physical volume. This satisfies users' demand for large water volumes while reducing operating costs by decreasing heating time and energy consumption.

[0018] In addition, the two connecting arms of the hanging bracket and the top of the outer shell form a triangular structure, which makes the water heater less likely to shake or tip over. This makes the water heater particularly suitable for wall mounting, eliminating the need to install it inside a cabinet. This reduces the risk of electrical faults caused by moisture, improves the safety of the water heater during use, and protects the personal and property safety of users. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of the structure of this embodiment. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0022] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0023] Furthermore, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection using welding, a detachable connection using bolts, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0025] Reference Figure 1 A kitchen and bathroom universal water heater includes an inner tank 1, an electric heating device 2, an inlet pipe 3 and an outlet pipe 4. The inner tank 1 is provided with at least two cavities 11. The upper parts of adjacent cavities 11 are connected to each other through an upper connecting port 12, and the lower parts of adjacent cavities 11 are connected to each other through a lower connecting port 13.

[0026] Furthermore, the electric heating device 2 uses an electric heating tube. One end of the electric heating device 2 is fixed to the inner liner 1, and the other end extends into all the cavities 11 through the lower connecting port 13, so that the electric heating device 2 can simultaneously and directly heat the water in the lower part of the cavities 11.

[0027] Furthermore, the bottom end of the water inlet pipe 3 has a cold water inlet communicating with its inner cavity, and the top end has a cold water outlet communicating with its interior; the bottom end of the water outlet pipe 4 has a hot water outlet communicating with its inner cavity, and the top end has a hot water inlet communicating with its interior; the bottom ends of both the water inlet pipe 3 and the water outlet pipe 4 are fixed to the inner liner 1, and the water inlet pipe 3 and the water outlet pipe 4 extend into the two cavities 11 respectively; the tops of the water inlet pipe 3 and the water outlet pipe 4 extend upwards close to the top wall of the cavity 11, and there is a gap between the top of the water outlet pipe 4 and the top wall of the cavity 11, and between the top of the water inlet pipe 3 and the top wall of the cavity 11, so as to avoid affecting the flow of water.

[0028] Furthermore, the inlet pipe 3 is fitted with a guide pipe 5. The upper end of the guide pipe 5 is closed, and the lower end is a preheating outlet 51. A preheating channel 100 is formed between the inner wall of the guide pipe 5 and the outer wall of the inlet pipe 3. The upper end of the preheating channel 100 is connected to the cold water outlet at the top of the inlet pipe 3, and the lower end is connected to the preheating outlet 51.

[0029] Tap water flows into the inlet pipe 3 from the cold water inlet at the bottom of the inlet pipe 3, and then flows into the preheating water channel 100 from the cold water outlet. During the process of the tap water passing through the preheating water channel 100, the hot water in the container heats the guide pipe 5, and the heat on the guide pipe 5 preheats the tap water passing through the preheating water channel 100.

[0030] In this embodiment, the preheating outlet 51 is higher than the lower connecting port 13 and the electric heating device 2, so that the tap water flowing out of the preheating outlet 51 can flow downward and pass through the electric heating device 2, and be heated by the electric heating device 2 to become hot water. At the same time, it is also beneficial for the tap water flowing out of the preheating outlet 51 to be dispersed and flow into the bottom of each cavity 11, making full use of each part of the electric heating device 2 to heat the water.

[0031] In this embodiment, there are four cavities 11 arranged from left to right. Each cavity 11 is formed by a partition 14 dividing the inner cavity of the inner liner 1. The front and rear ends of the partition 14 are fixedly connected to the inner liner 1. An upper connection port 12 is formed between the top of the partition 14 and the top of the inner wall of the inner liner 1, and a lower connection port 13 is formed between the bottom of the partition 14 and the bottom of the inner wall of the inner liner 1. In other embodiments, the upper connection port 12 and the lower connection port 13 may be directly formed on the partition 14.

[0032] In this embodiment, the top of the guide tube 5 is fixed to the wall of the inner liner 1, and the top of the guide tube 5 is sealed by the wall of the inner liner 1, thereby not only fixing the guide tube 5, but also sealing the top of the guide tube 5.

[0033] In this embodiment, the kitchen and bathroom universal water heater also includes a control valve 6. The tap water inlet of the control valve 6 is connected to the tap water pipe, the tap water outlet of the control valve 6 is connected to the cold water inlet of the inlet pipe 3, the hot water inlet of the control valve 6 is connected to the hot water outlet of the outlet pipe 4, and the mixed water outlet of the control valve 6 is connected to the universal shower head 61. Furthermore, the control valve 6 is a thermostatic valve with an anti-electric shock wall. The thermostatic valve with an anti-electric shock wall has a water resistance function, which is highly safe; it can also resist the fluctuating water temperature under 0.1-0.7 MPa water pressure changes, and at the same time, it can control the turbulence phenomenon in the inner tank 1, always protecting the hot water on top and the cold water at the bottom. When combined with the water heater, it has more than twice the water output compared with ordinary valves, achieving a capacity increase effect. Thermostatic valves are a conventional technology in the field of water heater technology. You can refer to the applicant's previous patent applications, such as the technical solutions of CN201610131173.6 and CN201720160398.4.

[0034] In this embodiment, the kitchen and bathroom universal water heater also includes a heat insulation layer 7 wrapped around the outside of the inner tank 1, thereby reducing the efficiency of heat leakage from the inner tank 1 to the outside. The heat insulation layer 7 can be a foamed heat insulation layer 7.

[0035] In this embodiment, the kitchen and bathroom universal water heater also includes a shell 8. The inner tank 1, insulation layer 7, and control valve 6 are all located inside the shell 8, thereby improving the aesthetics of the water heater. Furthermore, the bottom of the shell 8 is an extended shell, the interior of which serves as a mounting cavity. The mounting cavity houses a control device for controlling the operation of the electric heating device 2 and the control valve 6. This control device is connected to a switch control board 9 located outside the extended shell. The switch control board 9 is used to input control signals from the user to the control device. The control device is not shown in the accompanying drawings.

[0036] In this embodiment, a hanging bracket 10 is provided on the top of the outer casing 8. The hanging bracket 10 includes two connecting arms. The lower ends of the two connecting arms are connected to the top of the outer casing 8, and the upper ends of the two connecting arms are connected together to form a hanging hole 101. The hanging hole 101 is used to cooperate with a hanging device located on the wall, which is an expansion bolt fixed to the wall. The two connecting arms and the top of the outer casing 8 form a triangular structure, which makes the water heater less prone to shaking or tipping. This makes the water heater particularly suitable for wall installation, eliminating the need for installation inside a cabinet. This not only avoids the impact of the small and humid environment inside the cabinet on the water heater, reducing the risk of circuit failure caused by moisture, extending the service life of the water heater, and reducing the user's maintenance costs and replacement frequency, but also makes the water heater's location more conspicuous, facilitating daily inspection, maintenance, and operation by the user, reducing safety hazards during water heater use, improving the safety of water heater use, and protecting the user's personal and property safety.

[0037] The working principle of this utility model is as follows: When tap water passes through the control valve 6, it is divided into two streams. The first stream of tap water flows into the preheating channel from the inlet pipe 3 and is preheated by the guide pipe 5 during the process of passing through the preheating hot water channel 100. Then, it flows from the preheating outlet 51 to the electric heating device 2, so that this stream of water is quickly heated into hot water. The hot water flows upward to the top of the cavity 11 and then flows through the outlet pipe 4 to the control valve 6. The hot water flowing out of the outlet pipe 4 mixes with the second stream of tap water in the control valve 6 and then flows from the mixed water outlet end of the control valve 6 to the universal spray head 61, thereby supplying water for the kitchen or for bathing.

[0038] The above structure forms a preheating channel 100 through the inlet pipe 3 and the guide pipe 5. After the tap water enters through the inlet pipe 3, it flows into the preheating channel 100 and is preheated in the preheating channel 100. Then, it flows from the preheating outlet 51 at the lower end to the bottom of each cavity 11 and is heated by the electric heating device 2. In this way, the heating efficiency of the tap water is improved by preheating and then reheating the tap water, so that the hot water output of the water heater can be increased by 1.5-2 times. For example, when the rated volume of the water heater is 6L, it can output 15-18L of hot water to meet the user's water supply needs.

[0039] The above description is only a preferred embodiment of the present utility model. Any technical solution that achieves the purpose of the present utility model by essentially the same means shall fall within the protection scope of the present utility model.

Claims

1. A kitchen and bathroom universal water heater comprising an inner container (1), an electric heating device (2), a water inlet pipe (3) and a water outlet pipe (4), characterized in that: The inner liner (1) has at least two cavities (11). The upper parts of adjacent cavities (11) are connected to each other through an upper connecting port (12), and the lower parts of adjacent cavities (11) are connected to each other through a lower connecting port (13). One end of the electric heating device (2) is fixed to the inner liner (1), and the other end extends into all cavities (11) through the lower connecting port (13). The bottom ends of the water inlet pipe (3) and the water outlet pipe (4) are both fixed to the inner liner (1). 4) The water outlet pipe (4) is inserted into the two cavities (11) respectively. The top end of the water outlet pipe (4) has a hot water inlet that communicates with its interior. The water inlet pipe (3) is fitted with a guide pipe (5). The upper end of the guide pipe (5) is closed and the lower end is a preheating outlet (51). The inner wall of the guide pipe (5) and the outer wall of the water inlet pipe (3) form a preheating hot water channel (100). The upper end of the preheating hot water channel (100) is connected to the cold water outlet at the top of the water inlet pipe (3) and the lower end is connected to the preheating outlet (51).

2. The kitchen and bathroom universal water heater according to claim 1, characterized in that: The preheating outlet (51) is higher than the lower connecting port (13) and the electric heating device (2).

3. The kitchen and bathroom universal water heater according to claim 1, characterized in that: The top of the guide tube (5) is fixed to the wall of the inner liner (1), and the top of the guide tube (5) is closed through the wall of the inner liner (1).

4. The kitchen and bath universal water heater of claim 1, wherein: The kitchen and bathroom universal water heater also includes a control valve (6), the tap water outlet of the control valve (6) is connected to the cold water inlet of the inlet pipe (3), and the hot water inlet of the control valve (6) is connected to the hot water outlet of the outlet pipe (4).

5. A general kitchen and bath water heater as defined in claim 4, wherein: The mixing water outlet of the control valve (6) is connected to the universal nozzle (61).

6. The kitchen and bath universal water heater of claim 4, wherein: The control valve (6) is a thermostatic valve with an anti-electric shock wall.

7. A general kitchen and bath water heater as claimed in any one of claims 1 to 6, characterized in that: The kitchen and bathroom water heater also includes an insulation layer (7) wrapped around the outside of the inner tank (1).

8. The kitchen and bathroom universal water heater according to claim 7, characterized in that: The kitchen and bathroom universal water heater also includes an outer shell (8), and the inner tank (1), the insulation layer (7) and the control valve (6) are all located inside the outer shell (8).

9. A general kitchen and bath water heater as defined in claim 8, wherein: The bottom of the outer shell (8) is an extension shell, and the interior of the extension shell serves as an installation cavity. The installation cavity is equipped with a control device for controlling the operation of the electric heating device (2) and the control valve (6). The control device is connected to a switch control board (9) located outside the extension shell.

10. The kitchen and bath universal water heater of claim 8, wherein: The top of the outer shell (8) is provided with a hanging bracket (10), which includes two connecting arms. The lower ends of the two connecting arms are connected to the top of the outer shell (8), and the upper ends of the two connecting arms are connected together to form a hanging hole (101). The two connecting arms and the top of the outer shell (8) form a triangular structure.

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