Steam generating device

Abstract

The utility model relates to a steam generating device which comprises an electric heating pipe and a water pipe sleeved on the outer side of the electric heating pipe, a flow guide groove is arranged on the outer side of the electric heating pipe, the flow guide groove is circuitously arranged on the outer side wall of the electric heating pipe along the length direction of the electric heating pipe, and a water heating channel for water flow to pass through is formed between the flow guide groove and the water pipe. The flow guide groove is formed in the surface of the electric heating pipe, so that the overall length of the water heating channel is relatively increased, the water flow heating time of the electric heating pipe is prolonged, the water heating efficiency of the electric heating pipe is improved, the power of the electric heating pipe and the length of a water pipe do not need to be additionally increased, and the material cost and the use cost of a product are prevented from being additionally increased; the outer surface of the water pipe can be kept flat, and the whole product can be more attractive.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating devices, in particular to a steam generating device. Background Art

[0002] A steam generator is a device that heats water to boiling to produce steam, and is often used in cooking, disinfection and other fields.

[0003] Steam generators are generally heated by electric heating devices, which usually include heating tubes and water pipes. Under normal circumstances, water will flow in a straight line between the water pipes and the heating tubes. The water flow speed of this heating method will be relatively fast, resulting in low thermal efficiency. It is usually necessary to increase the power of the heating tubes or extend the length of the water pipes to achieve better heating effects, but this increases the equipment material cost and usage cost.

[0004] Therefore, further improvement is needed. Utility Model Content

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to provide a steam generating device that improves the heating efficiency of water without increasing the power of the electric heating tube and the length of the water pipe.

[0006] The purpose of this utility model is achieved in this way:

[0007] A steam generating device includes an electric heating tube and a water pipe sleeved on the outside of the electric heating tube. A guide groove is provided on the outside of the electric heating tube. The guide groove is arranged on the outer wall of the electric heating tube in a circuitous manner along the length direction of the electric heating tube. A heating water channel for water flow to pass through is formed between the guide groove and the water pipe.

[0008] As a specific solution, the outer side of the electric heating pipe and the inner side of the water pipe are respectively provided with anti-scaling coatings, and the electric heating pipe and the water pipe are tightly connected.

[0009] As a specific solution, the electric heating tube is provided with inner connecting surfaces at both ends, and the water pipe is provided with outer connecting surfaces corresponding to the inner connecting surfaces at both ends, and the inner connecting surfaces are liquid-tightly matched with the outer connecting surfaces.

[0010] As a specific solution, the water pipe is provided with a water inlet and a water outlet, and the water inlet and the water outlet are respectively connected to the head and tail ends of the heating water channel.

[0011] As a specific solution, the water inlet and / or water outlet is connected to a joint portion, the head end of the joint portion is connected and fixed to the water inlet or water outlet, and the tail end thereof is extended outward.

[0012] As a specific solution, the head end of the joint portion is provided with a connecting flange, and the connecting flange is liquid-tightly matched with the inner side of the water inlet or the water outlet.

[0013] As a specific solution, bosses are provided on the water pipe at positions corresponding to the water inlet and the water outlet, the bosses protrude outward, and the joint portion abuts and cooperates with the bosses.

[0014] The beneficial effects of the utility model are:

[0015] By setting guide grooves on the surface of the electric heating tube, the overall length of the heating water channel is relatively increased, which increases the time the electric heating tube heats the water flow and improves the heating efficiency of the electric heating tube for water. There is no need to increase the power of the electric heating tube and the length of the water pipe, thereby avoiding additional increases in the material cost and usage cost of the product. At the same time, the outer surface of the water pipe can be kept smooth, and the overall product can be made more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an exploded schematic diagram of an embodiment of the present utility model.

[0017] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the present utility model.

[0018] Figure 3 It is a structural schematic diagram of an embodiment of the present utility model.

[0019] Figure 4 It is an enlarged view of A in embodiment of the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] See also Figures 1-4 The steam generating device includes an electric heating tube 1 and a water pipe 2 sheathed on the outside of the electric heating tube 1. A guide groove 11 is provided on the outside of the electric heating tube 1. The guide groove 11 is arranged on the outer wall of the electric heating tube 1 in a circuitous manner along the length direction of the electric heating tube 1. A heating water channel for water to flow through is formed between the guide groove 11 and the water pipe 2. By arranging the guide groove 11 on the surface of the electric heating tube 1, the overall length of the heating water channel is relatively increased, the time for the electric heating tube 1 to heat the water flow is increased, and the heating efficiency of the electric heating tube 1 to the water is improved. There is no need to additionally increase the power of the electric heating tube 1 and the length of the water pipe 2, thereby avoiding additional increase in material cost and use cost of the product. At the same time, the outer surface of the water pipe 2 can be kept flat, and the overall product can be made more beautiful.

[0022] Furthermore, the outer side of the electric heating tube 1 and the inner side of the water pipe 2 are respectively provided with an anti-scale coating, and the electric heating tube 1 and the water pipe 2 are tightly connected. The anti-scale coating can preferably be a nano-coating, which has excellent wear resistance and corrosion resistance. Therefore, applying the nano-coating on the electric heating tube 1 and the water pipe 2 can play a role in anti-scale, and at the same time can protect the electric heating tube 1 and the water pipe 2 and extend the service life.

[0023] Furthermore, the electric heating tube 1 is provided with an inner connecting surface 12 at both ends, and the water pipe 2 is provided with an outer connecting surface 21 corresponding to the inner connecting surface 12 at both ends. The inner connecting surface 12 and the outer connecting surface 21 are liquid-tightly matched, thereby improving the connection strength between the electric heating tube 1 and the water pipe 2.

[0024] Furthermore, a water inlet 22 and a water outlet 23 are provided on the water pipe 2, and the water inlet 22 and the water outlet 23 are respectively connected to the head and tail ends of the heating water channel, and the water flow can completely pass through the heating water channel through the water inlet 22 and the water outlet 23.

[0025] Furthermore, the water inlet 22 and / or the water outlet 23 are connected to a joint part 3, the head end of the joint part 3 is connected and fixed to the water inlet 22 or the water outlet 23, and the tail end thereof is extended outward. The joint part 3 can make the external waterway more easily installed and connected to the water inlet 22 or the water outlet 23. In this embodiment, the water inlet 22 and the water outlet 23 are both connected to corresponding joint parts 3.

[0026] Furthermore, a connecting flange 31 is provided at the head end of the joint part 3 , and the connecting flange 31 is liquid-tightly matched with the inner side of the water inlet 22 or the water outlet 23 to improve the connection strength between the joint part 3 and the water inlet 22 or the water outlet 23 .

[0027] Furthermore, a boss portion 24 is provided on the water pipe 2 at positions corresponding to the water inlet 22 and the water outlet 23. The boss portion 24 protrudes outward, and the joint portion 3 abuts against the boss portion 24. The boss portion 24 can improve the structural strength of the water pipe 2 and the connection strength with the joint portion 3.

[0028] The above embodiments are only preferred embodiments of the present invention, and other embodiments are possible. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all within the scope set by the claims of this application.

Claims

1. A steam generating device, comprising an electric heating tube (1) and a water tube (2) sleeved outside the electric heating tube (1), characterized in that: A flow guide groove (11) is provided on the outer side of the electric heating tube (1), and the flow guide groove (11) is arranged on the outer side wall of the electric heating tube (1) in a circuitous manner along the length direction of the electric heating tube (1), and a heating water channel for water flow to pass through is formed between the flow guide groove (11) and the water tube (2).

2. The steam generating device according to claim 1, characterized in that: The outer side of the electric heating pipe (1) and the inner side of the water pipe (2) are respectively provided with anti-scaling coatings, and the electric heating pipe (1) and the water pipe (2) are tightly fitted and connected.

3. The steam generating device according to claim 1, characterized in that: The electric heating tube (1) is provided with inner connecting surfaces (12) at both ends, and the water tube (2) is provided with outer connecting surfaces (21) corresponding to the inner connecting surfaces (12) at both ends, and the inner connecting surfaces (12) and the outer connecting surfaces (21) are matched in a liquid-tight manner.

4. The steam generating device according to any one of claims 1 to 3, characterized in that: The water pipe (2) is provided with a water inlet (22) and a water outlet (23), and the water inlet (22) and the water outlet (23) are respectively connected to the head and tail ends of the heating water channel.

5. The steam generating device according to claim 4, characterized in that: The water inlet (22) and / or the water outlet (23) are connected to a joint part (3); the head end of the joint part (3) is connected and fixed to the water inlet (22) or the water outlet (23), and the tail end thereof is arranged to extend outwards.

6. The steam generating device according to claim 5, characterized in that: The head end of the joint portion (3) is provided with a connecting flange (31), and the connecting flange (31) is in liquid-tight cooperation with the inner side of the water inlet (22) or the water outlet (23).

7. The steam generating device according to claim 5, characterized in that: A boss portion (24) is provided on the water pipe (2) at positions corresponding to the water inlet (22) and the water outlet (23); the boss portion (24) protrudes toward the outside, and the joint portion (3) abuts against the boss portion (24).

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