Multifunctional water heater

Abstract

The utility model discloses a multifunctional water heater which comprises heat exchange pipes arranged in parallel, electric heating pipes are arranged in the heat exchange pipes, the heat exchange pipes are communicated end to end to form an S-shaped channel, the front end of the S-shaped channel is connected with a water inlet pipeline, the tail end of the S-shaped channel is connected with an electric three-way ball valve, and an upper connector of the electric three-way ball valve is connected with a hot water pipeline. A lower connector of the electric three-way ball valve is connected with a water inlet of the plate heat exchanger, a water outlet of the plate heat exchanger is connected with the water inlet pipeline through a water return pipeline, and the plate heat exchanger is provided with a heating water inlet and a heating water return port. The multifunctional water heater integrates the functions of water heating and heating, and has the advantages of being compact in structure, convenient to connect, low in manufacturing and operating cost and the like.

Description

Technical Field

[0001] This utility model relates to a water heater, and more particularly to a multi-functional water heater. Background Technology

[0002] A water heater is a device that uses various physical principles to raise the temperature of cold water to hot water within a certain time. With the continuous improvement of people's living standards, water heaters have become commonplace in households. However, existing water heaters have a single function: providing only domestic hot water.

[0003] In most parts of my country, the cold winter climate creates a strong demand for heating. Although some cities have implemented centralized heating, the vast rural areas and many cities south of the Huai River still have an urgent need for heating that needs to be met. Purchasing a separate heater is expensive and, due to its limited usage time, not economical. Utility Model Content

[0004] The purpose of this invention is to provide a multifunctional water heater to solve the problems existing in the prior art.

[0005] The purpose of this utility model is achieved as follows: A multi-functional water heater includes parallel heat exchange tubes, each containing an electric heating element. The heat exchange tubes are connected end-to-end to form an S-shaped passage. The front end of the S-shaped passage is connected to an inlet water pipe, and the rear end is connected to an electric three-way ball valve. The upper connector of the electric three-way ball valve is connected to a hot water pipe, and the lower connector is connected to the inlet of a plate heat exchanger. The outlet of the plate heat exchanger is connected to the inlet water pipe via a return water pipe. The plate heat exchanger has a heating inlet and a heating return outlet. This multi-functional water heater integrates hot water and heating functions and has advantages such as compact structure, convenient connection, and low manufacturing and operating costs.

[0006] As a further improvement of this utility model, a T-joint is provided at the front end of the heat exchange tube. The electric heating tube is inserted into the heat exchange tube from the front end of the T-joint and connected to the T-joint by threads. The T-joint facilitates the connection of adjacent heat exchange tubes, provides convenience for the installation and fixing of the electric heating tube, and is easy to disassemble and maintain.

[0007] As a further improvement of this utility model, the heat exchange tubes are arranged in pairs using an integrated U-shaped tube, which further simplifies the structure and reduces costs.

[0008] As a further improvement of this utility model, the electric heating tube is equipped with fins, which not only greatly increases the heat exchange area, but also reduces its size.

[0009] As a further improvement of this utility model, the outer diameter of the electric heating tube is not less than 1 / 2 of the inner diameter of the heat exchange tube to ensure the heat exchange effect.

[0010] As a further improvement of this utility model, a water level probe connection port and a temperature probe connection port are provided between the S-shaped passage and the electric three-way ball valve, which facilitates real-time monitoring of water level and temperature and ensures the effectiveness of use.

[0011] As a further improvement of this utility model, a spare temperature probe connection port is provided between the S-type passage and the electric three-way ball valve to further improve the system reliability.

[0012] As a further improvement of this utility model, the number of heat exchange tubes is 3, the power of the electric heating tube is 7.5kw, and the power of the plate heater is not less than 22.5kw, which can meet the hot water and heating needs of general households. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the internal structure of a multifunctional water heater according to an embodiment of the present invention.

[0014] Figure 2 This is a schematic diagram of the electric heating element structure of the multifunctional water heater of this utility model.

[0015] Figure 3 This is a schematic diagram of the internal structure of a multifunctional water heater according to another embodiment of the present invention.

[0016] Among them, 1 is the first heat exchange tube, 2 is the middle heat exchange tube, 3 is the second heat exchange tube, 4 is the electric heating tube, 5 is the water inlet pipe, 6 is the tee connector, 7 is the short threaded pipe, 8 is the electric tee ball valve, 9 is the hot water pipe, 10 is the plate heat exchanger, 11 is the heating water inlet, 12 is the heating water return, 13 is the fins, 14 is the water level probe connection port, 15 is the temperature probe connection port, and 16 is the spare temperature probe connection port. Detailed Implementation

[0017] like Figure 1-2 The multi-functional water heater shown includes three parallel sets of odd-numbered heat exchange tubes, each containing an electric heating element 4. The heat exchange tubes are connected end-to-end to form an S-shaped path.

[0018] Specifically, the heat exchange tubes include a first-side heat exchange tube 1, a second-side heat exchange tube 3, and a middle heat exchange tube 2 located on the upper and lower sides. The first-side heat exchange tube 1 and the middle heat exchange tube 2 are paired together using an integrated U-shaped tube to simplify the structure and reduce costs. The front end of the first-side heat exchange tube 1 is connected to the inlet water pipe 5, adjacent integrated U-shaped tubes are connected to each other, and the integrated U-shaped tube is connected to the second-side heat exchange tube 3 via a tee joint 6 and a short threaded pipe 7. The rear end of the second-side heat exchange tube 3 is connected to an electric tee ball valve 8. The upper connector of the electric tee ball valve 8 is connected to the hot water pipe 9, and the lower connector of the electric tee ball valve 8 is connected to the inlet of the plate heat exchanger 10. The outlet of the plate heat exchanger 10 is connected to the inlet water pipe 5 via a return water pipe. The plate heat exchanger 10 is provided with a heating inlet 11 and a heating return water inlet 12, which are connected to the indoor heating pipes or radiators.

[0019] The electric heating element 4 is inserted into the heat exchange tube from the front end of the tee connector 6 and connected to the tee connector 6 via a thread, making connection convenient and maintenance easy. The electric heating element 4 is equipped with fins 13. The outer diameter of the electric heating element 4 is not less than 1 / 2 of the inner diameter of the heat exchange tube, and the outer diameter of the fins is slightly smaller than the inner diameter of the heat exchange tube to ensure heat exchange efficiency. By adopting a finned electric heating heat exchange design, the convective heating surface is multiplied, greatly improving heating efficiency, significantly reducing power consumption, and simultaneously reducing its overall size. Throughout the equipment operation, the medium can be rapidly heated to the designated temperature according to the water flow control.

[0020] The second heat exchange tube 3 has a water level probe connection port 14 on the upper side and a temperature probe connection port 15 on the lower side at its end (i.e., the end of the S-shaped passage), which facilitates real-time monitoring of water level and temperature to ensure effective operation. A spare temperature probe connection port 16 is also provided on the upper side of the second heat exchange tube 3 to further improve system reliability.

[0021] In this embodiment, the electric heating element 4 has a power of 7.5 kW, and the plate heater has a power of not less than 22.5 kW, which can meet the hot water and heating needs of a typical household. This multi-functional water heater, by incorporating an electric three-way ball valve 8, can automatically switch between heating and hot water functions as needed, thus achieving dual-purpose functionality. It features high thermal efficiency, high temperature resistance, long service life, simple manufacturing, low cost, stable operation, and low maintenance costs.

[0022] Figure 3 Another embodiment of the multifunctional water heater of this utility model is given. Figure 1The main difference in this embodiment is that, in this embodiment, the number of heat exchange tubes is an even number (specifically 4 groups), and all heat exchange tubes are paired together using an integrated U-shaped tube structure. The plate heat exchanger 10 is positioned on the upper side of the S-shaped passage, and the S-shaped passage is connected to the electric three-way ball valve 8 via a short threaded pipe 7. This structure results in a different overall shape for the multi-functional water heater (narrower width and longer length), allowing users to choose according to their specific needs based on their home installation space.

[0023] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A multi-functional water heater, comprising parallel heat exchange tubes, characterized in that: The heat exchange tubes are equipped with electric heating tubes. The heat exchange tubes are connected end to end to form an S-shaped passage. The front end of the S-shaped passage is connected to the inlet water pipe and the end is connected to an electric three-way ball valve. The upper connector of the electric three-way ball valve is connected to the hot water pipe, and the lower connector of the electric three-way ball valve is connected to the inlet of the plate heat exchanger. The outlet of the plate heat exchanger is connected to the inlet water pipe through the return water pipe. The plate heat exchanger is equipped with a heating inlet and a heating return outlet.

2. The multifunctional water heater according to claim 1, characterized in that: The heat exchange tube is provided with a T-joint at the front end, and the electric heating tube is inserted into the heat exchange tube from the front end of the T-joint and connected to the T-joint by threads.

3. The multifunctional water heater according to claim 1, characterized in that: The heat exchange tubes are arranged in pairs using an integrated U-shaped tube.

4. The multifunctional water heater according to claim 3, characterized in that: The electric heating tube has fins on its outside.

5. The multifunctional water heater according to claim 4, characterized in that: The outer diameter of the electric heating tube is not less than 1 / 2 of the inner diameter of the heat exchange tube.

6. The multifunctional water heater according to claim 1, characterized in that: The S-shaped passage is connected to the electric three-way ball valve by a water level probe connection port and a temperature probe connection port.

7. The multifunctional water heater according to claim 6, characterized in that: A spare temperature probe connection port is provided between the S-shaped passage and the electric three-way ball valve.

8. The multifunctional water heater according to any one of claims 1-7, characterized in that: The heat exchange tubes consist of 3 groups, the electric heating tubes have a power of 7.5 kW, and the plate heaters have a power of not less than 22.5 kW.

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