Instant heating device, electric water heater and electric heating faucet

Abstract

The utility model discloses an instant heating type heating device, an electric water heater and an electric heating faucet, the heating device comprises heat exchange tubes and a heating tube, the two heat exchange tubes are tightly attached to the outer surface of the heating tube, the contact surface between the heat exchange tubes and the heating tube is a plane, and the heating tube emits heat after being electrified. Heat is transferred to the heat exchange pipe through the contact surface between the heat exchange pipe and the heating pipe, so that fluid in the heat exchange pipe is heated, the heat exchange pipe and the heating pipe are in contact through a plane, surface contact is achieved, the contact area of heat conduction is increased, and therefore the heat transfer efficiency and the heating efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating devices, in particular to an instant heating device, an electric water heater and an electric water faucet. Background Art

[0002] Instant electric water heaters, electric faucets and other electric water-boiling appliances have been accepted by more and more people because they are more energy-saving than similar water storage products, can be used at any time, and take up less space.

[0003] At present, most of the hot water devices of electric water-boiling appliances such as instant electric water heaters and electric water faucets use the method of contacting the electric heating tube with the cold water in the container, that is, the electric heating tube is in direct contact with the water. Since the surface temperature of the electric heating tube is very high during operation, it is easy to form scale on its surface. When the scale with extremely low thermal conductivity accumulates to a certain extent, the heat generated by the electric heating tube cannot be absorbed by the water in time, and the electric heating tube overheats, which may cause the wall of the electric heating tube to burn through, resulting in dangerous leakage.

[0004] In order to solve the problem of electric heating tube fouling and burn-through, the industry began to adopt tubular heating, that is, installing electric heating tubes on the outer wall of a section of the pipeline, and using the electric heating tubes to quickly heat the cold water flowing through the pipeline. However, in the existing pipeline heating devices, since the outer wall shapes of the electric heating tubes and the pipelines are generally circular, a line contact is formed between the circles, resulting in a small contact surface between the two, low heat transfer efficiency, and thus reduced heating efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide an instant heating device, an electric water heater and an electric water faucet, wherein the heat exchange tube and the heating tube are in contact through a plane to achieve surface contact, thereby increasing the contact area of ​​heat conduction, thereby improving the heat transfer efficiency and heating efficiency.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The instant heating device comprises a heat exchange tube and a heating tube, wherein two heat exchange tubes are provided and the two heat exchange tubes are closely attached to the outer surface of the heating tube;

[0008] The contact surface between the heat exchange tube and the heating tube is a plane;

[0009] The heating tube generates heat after being energized, and the heat is transferred to the heat exchange tube through the contact surface between the heat exchange tube and the heating tube, thereby heating the fluid in the heat exchange tube.

[0010] In some embodiments, the two heat exchange tubes are arranged opposite to each other, and the heating tube is located between the two heat exchange tubes.

[0011] In some embodiments, the cross-section of the heating tube is trapezoidal; and the cross-section of the heat exchange tube is triangular.

[0012] In some embodiments, the heating tube includes a heat-conducting sleeve and a heating wire, the heating wire is arranged inside the heat-conducting sleeve, and an insulating powder layer is filled between the heating wire and the heat-conducting sleeve;

[0013] The cross section of the thermal sleeve is trapezoidal

[0014] In some embodiments, a fixing member is further included, the fixing member including a base wall, a side wall and a top wall;

[0015] One of the heat exchange tubes is in contact with the base wall and is fixed to the base wall by welding; the other heat exchange tube is in contact with the top wall.

[0016] In some embodiments, the heat exchange tube and the heating tube are both U-shaped;

[0017] The fixing piece is also provided with a vertical wall, which is arranged opposite to the side wall and abuts against the U-shaped bending section of the heat exchange tube or the heating tube;

[0018] The tube ends of the two heat exchange tubes are both extended away from the heating tube, and a top wall is arranged above the tube ends of the heat exchange tubes.

[0019] In some embodiments, the fixing member further comprises a stud, and the stud is disposed on the base wall.

[0020] The beneficial effects of the utility model are as follows: the heat exchange tube and the heating tube are in contact through a plane, thereby achieving surface contact and increasing the contact area of ​​heat conduction, thereby improving the heat transfer efficiency and the heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an axonometric diagram of the instant heating device of the utility model;

[0022] Figure 2 It is a top view of the instant heating device of the utility model;

[0023] Figure 3 It is a cross-sectional view of the instant heating device of the utility model;

[0024] Among them: 1-heat exchange tube; 2-heating tube; 21-heat-conducting sleeve; 22-heating wire; 23-insulating powder layer; 3-fixing part; 31-base wall; 32-side wall; 33-top wall; 34-vertical wall; 35-stud; 4-solder. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] refer to Figures 1 to 3The instant heating device comprises a heat exchange tube 1 and a heating tube 2. The heat exchange tube 1 is provided with two heat exchange tubes 1, and the two heat exchange tubes 1 are closely attached to the outer surface of the heating tube 2;

[0027] The contact surface between the heat exchange tube 1 and the heating tube 2 is a plane;

[0028] The heating tube 2 generates heat after being energized, and the heat is transferred to the heat exchange tube 1 through the contact surface between the heat exchange tube 1 and the heating tube 2 , thereby heating the fluid in the heat exchange tube 1 .

[0029] As a result, the heat exchange tube 1 and the heating tube 2 are in contact through a plane, achieving surface contact, increasing the contact area of ​​heat conduction, and thus improving the heat transfer efficiency and the heating efficiency.

[0030] Furthermore, the heating tube 2 can heat the two heat exchange tubes 1 at the same time, further improving the heating efficiency and the utilization rate of heat, wherein the two heat exchange tubes 1 can be independently arranged or individually controlled to meet different usage requirements.

[0031] The two heat exchange tubes 1 are arranged opposite to each other, and the heating tube 2 is located between the two heat exchange tubes 1, so that heat is more evenly transferred to the two heat exchange tubes 1. In addition, the heat exchange tubes 1 and the heating tubes 2 are stacked, which is convenient for assembly and saves space.

[0032] refer to Figure 3 The cross section of the heating tube 2 can be in a trapezoidal, square, rectangular or other shapes. If it is set in a trapezoidal shape, the strength is more stable and the flatness of the upper and lower contact surfaces is better.

[0033] The cross section of the heat exchange tube 1 can be in a trapezoidal, square, rectangular, semicircular or other shapes, among which a triangle shape has a more stable strength and a better flatness of the contact surface.

[0034] refer to Figure 3 The heating tube 2 includes a heat-conducting sleeve 21 and a heating wire 22. The heating wire 22 is arranged inside the heat-conducting sleeve 21. An insulating powder layer 23 is filled between the heating wire 22 and the heat-conducting sleeve 21. The insulating powder layer 23 can be magnesium oxide (MgO) powder, which has good thermal conductivity.

[0035] Both ends of the heating wire 22 have lead-out rods or lead-out wires for connecting with the lead wires;

[0036] The cross section of the heat-conducting sleeve 21 is trapezoidal. The heating tube 2 has strong sealing and insulation properties and is easy to process and shape.

[0037] refer to Figure 1 and Figure 3 , further comprising a fixing member 3, the fixing member 3 comprising a base wall 31, a side wall 32 and a top wall 33;

[0038] One of the heat exchange tubes 1 contacts the base wall 31 and is fixed to the base wall 31 by welding through the solder 4 ; the other heat exchange tube 1 contacts the top wall 33 .

[0039] Thus, the base wall 31, the side wall 32 and the top wall 33 form a space for accommodating the heat exchange tube 1 and the heating tube 2. The connection between one heat exchange tube 1 and the base wall 31 is welded and fixed with solder 44, so that the subsequent assembly of the heating tube 2 and the other heat exchange tube 1 is more tightly connected.

[0040] The heat exchange tube 1 and the heating tube 2 are both U-shaped;

[0041] The fixing member 3 is further provided with a vertical wall 34, which is arranged opposite to the side wall 32, and the vertical wall 34 conflicts with the U-shaped bending section of the heat exchange tube 1 or the heating tube 2, so as to limit the heat exchange tube 1 or the heating tube 2 to a certain extent;

[0042] The ends of the two heat exchange tubes 1 are both extended away from the heating tube 2. A top wall 33 is provided above the ends of the heat exchange tubes 1. The ends of the two heat exchange tubes 1 form an expansion structure to achieve a certain degree of limitation.

[0043] The fixing member 3 further includes a stud 35, which is disposed on the base wall 31. The base wall 31 may be provided with studs 35 on one side close to the top wall 33 and on one side away from the top wall 33. The control element may be connected to the fixing member 3 through the relevant studs 35, and the fixing member 3 may also be fixed to an electric water heater, an electric water faucet or other electric water boiling equipment through the relevant studs 35, so as to fix the entire heating device.

[0044] An electric water heater comprises the instant heating device.

[0045] An electric water faucet comprises the instant heating device.

[0046] The above disclosure is only some embodiments of the utility model. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the utility model, and these all belong to the protection scope of the utility model.

Claims

1. Instant heating device, characterized in that: It comprises a heat exchange tube (1) and a heating tube (2), wherein two heat exchange tubes (1) are provided, and the two heat exchange tubes (1) are closely attached to the outer surface of the heating tube (2); The contact surface between the heat exchange tube (1) and the heating tube (2) is a plane; The heating tube (2) generates heat when powered on, and the heat is transferred to the heat exchange tube (1) through the contact surface between the heat exchange tube (1) and the heating tube (2), thereby heating the fluid in the heat exchange tube (1); The two heat exchange tubes (1) are arranged opposite to each other, and the heating tube (2) is located between the two heat exchange tubes (1); It also includes a fixing member (3), wherein the fixing member (3) includes a base wall (31), a side wall (32) and a top wall (33); One of the heat exchange tubes (1) contacts the base wall (31) and is fixed to the base wall (31) by welding; the other heat exchange tube (1) contacts the top wall (33).

2. The instant heating device according to claim 1, characterized in that: The cross section of the heating tube (2) is trapezoidal; The cross section of the heat exchange tube (1) is triangular.

3. The instant heating device according to claim 2, characterized in that: The heating tube (2) comprises a heat-conducting sleeve (21) and a heating wire (22), wherein the heating wire (22) is arranged inside the heat-conducting sleeve (21), and an insulating powder layer (23) is filled between the heating wire (22) and the heat-conducting sleeve (21); The cross section of the heat-conducting sleeve (21) is trapezoidal.

4. The instant heating device according to claim 1, characterized in that: The heat exchange tube (1) and the heating tube (2) are both U-shaped; The fixing member (3) is further provided with a vertical wall (34), the vertical wall (34) being arranged opposite to the side wall (32), and the vertical wall (34) being in conflict with the U-shaped bending section of the heat exchange tube (1) or the heating tube (2); The tube ends of the two heat exchange tubes (1) are both extended away from the heating tube (2), and a top wall (33) is provided above the tube ends of the heat exchange tubes (1).

5. The instant heating device according to claim 4, characterized in that: The fixing member (3) further comprises a stud (35), wherein the stud (35) is arranged on the base wall (31).

6. An electric water heater, characterized in that: The instant heating device comprises the instant heating device as described in any one of claims 1 to 4.

7. An electric water faucet, characterized in that: The instant heating device comprises the instant heating device as described in any one of claims 1 to 4.

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