CN201764657U - a heat exchanger - Google Patents

Abstract

The utility model discloses a heat exchanger, including water container subassembly and electric heating element, the water container subassembly is coiled spiral hollow tube, electric heating element be shape and size with water container subassembly supporting spiral tubular heater and its positive and negative extremely set up at the same one end of water container subassembly, the cooperation is compact between the two. The heat exchanger with the structure of the utility model has the advantages of compact structure, high safety performance, easy processing, and is suitable for various electric water heaters of instant heating or quick heating type, electric water heating taps and other electric water boiling appliances.

Description

a heat exchanger

technical field

The utility model relates to a heat exchanger, in particular to a heat exchanger for a small electric heating water boiling appliance.

Background technique

Instant or fast heating electric water heaters, electric faucets and other electric heating water boiling appliances have been accepted by more and more people because they save more electricity than similar products of water storage type, can be used at any time, and do not waste. . Currently commercially available products of this type usually use a shell-and-tube heat exchanger in which a high-power electric heating tube 1 is directly immersed in a water container 2 (as shown in FIG. 1 ). The surface of the electric heating tube with this structure is prone to scaling and there is a danger of electric shock. In order to solve the above-mentioned disadvantages, someone has manufactured an integral heat exchanger as shown in Figure 2. The hollow tubular water container 2 is wound around the periphery of the electric heating tube 1 and is not in contact with the electric heating tube 1. Between the water container 2 and the electric heating tube 1 Heat conduction material 3 is filled between the electric heating tubes 1, and the water container 2, electric heating tube 1 and heat conduction material 3 are made into an inseparable whole by means of casting or the like. However, since the heat exchanger with this structure uses a U-shaped or W-shaped heating element, when the volume of the heat exchanger itself is small, the distance between the two ends of the bending part of the heating element is very small, which not only increases the difficulty of processing, but also easily causes The heating element is damaged at the bending part, causing a safety accident.

Utility model content

Aiming at the deficiencies of the prior art, the utility model proposes a heat exchanger with compact structure, high safety and easy processing.

A heat exchanger, including a water container assembly and an electric heating assembly, the water container assembly is a hollow tube wound into a spiral shape, and its function is to allow water to pass through the middle and be heated; the electric heating assembly is in shape and size The spiral tubular heater matched with the water container assembly can heat the water in the water container assembly, and its positive and negative electrodes are arranged at the same end of the water container assembly.

In the present invention, most of the electric heating components are accommodated inside the water container component.

In the present invention, a conductive medium with good thermal conductivity is filled between the electric heating component and the water container component.

In the present invention, the water container component, the electric heating component and the heat conduction medium can be made into a tightly combined whole by casting or the like.

Compared with the prior art, the beneficial effect of the present invention is that since the electric heating assembly is made into a spiral shape matching the shape and size of the water container assembly, the cooperation between the two is more compact, and U-shaped or The W-shaped heating element is a potential safety hazard in the bending part, and the processing is also easier.

Because the utility model has the above-mentioned advantages, the heat exchanger using the utility model structure is compact in structure, high in safety performance, and easy to process, and can be applied to various instant or rapid heating electric water heaters, electric faucets and other electric heating water boiling appliances.

Description of drawings

Fig. 1 is the structural representation of shell-and-tube heat exchanger in the prior art;

Fig. 2 is a structural schematic diagram of an integral cast heat exchanger in the prior art;

Fig. 3 is the exploded view of the utility model device embodiment (heat-conducting medium is not drawn among the figure);

Fig. 4 is a schematic diagram of the overall structure of an embodiment of the device of the present invention.

Detailed ways

The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 3 and Figure 4, the heat exchanger of the electric heating water boiling appliance includes an electric heating assembly 1 and a water container assembly 2, the water heating assembly 2 is a hollow tube wound into a spiral shape, and the electric heating assembly 1 is shaped and The spiral tubular heater whose size matches the water container assembly 2 is mostly accommodated in the spiral cavity of the water container assembly 2, and a heat-conducting medium 3 with good thermal conductivity is filled between the two, and the electric heating assembly 1 The positive and negative electrodes are both arranged at one end close to the water inlet of the water container assembly. When the heat exchanger is in the heating working state, the cold water flows in from the water inlet of the water container assembly, and is heated by the electric heating assembly when flowing through its internal pipe, and the hot water flows out from the water outlet.

Claims (4)

1. heat exchanger, comprise water receptacle assembly and electric heating assembly, the water receptacle assembly is the hollow pipe of coiling type, it is characterized in that: described electric heating assembly is that match with described water receptacle assembly screw type tubulose heater and its both positive and negative polarity of shape and size is arranged on the same end of described water receptacle assembly.

2. heat exchanger according to claim 1 is characterized in that: described electric heating assembly major part is contained in the helical cavity of described water receptacle assembly.

3. heat exchanger according to claim 2 is characterized in that: be filled with the good transmitting medium of thermal conductive property between described electric heating assembly and the described water receptacle assembly.

4. heat exchanger according to claim 3 is characterized in that: described water receptacle assembly and electric heating assembly and heat-conducting medium are made an integral body of combining closely by forging type.

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