Water heater

Abstract

The utility model relates to the field of heaters, in particular to an underwater heater. The water heater comprises a heater body, the heater body comprises bent heating pipes and a spiral heating pipe, the number of the bent heating pipes is two, the lower ends of the two bent heating pipes are communicated through the spiral heating pipe, and the interior of the spiral heating pipe and the interior of the bent heating pipes are in a hollow state; heating resistance wires are arranged in the bent heating pipe and the spiral heating pipe; the water heater is formed by assembling bent heating pipes and spiral heating pipes which are detached in a segmented mode and can be installed into a whole, and the spiral heating pipes are located at the bottom ends of the two bent heating pipes. Through the structural design, the heating length of the whole heating pipe can be prolonged, meanwhile, the heating pipe can be quickly and conveniently disassembled and assembled, and filling of the heating resistance wire in the heating pipe is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of heaters, in particular to an underwater heater. Background Art

[0002] The water heater is mainly used in bathtubs or sinks, or in devices for seed germination, making liquid fertilizers, and microbial fermentation devices; it maintains a certain temperature of the above devices according to the set temperature by heating with electricity; when installed, the water heater directly contacts the liquid substance;

[0003] A related art provides an underwater ceramic heater, comprising a heater body and a connection device connected to an external power source, wherein the heater body is covered with one or more ceramic rings; a portion of the heater body is formed into a spiral shape;

[0004] Since the ceramic layer is not directly provided on the heater body, the underwater ceramic heater fundamentally solves the problem of ceramic layer peeling; however, the underwater ceramic heater also has some defects. For example, the heater body is assembled by a half spiral tube and a half straight tube, and the half spiral tube surrounds the outside of the half straight tube. Although this can extend the length of the entire heating tube, it is not conducive to the assembly of the half spiral tube and the half straight tube. It must be formed in one piece and cannot be disassembled and assembled. At the same time, it also increases the filling and assembly of the heating wire surrounding the inside of the heating tube.

[0005] In view of the problems in the above background technology, the utility model aims to provide a water heater. Utility Model Content

[0006] The utility model aims to provide an underwater heater to solve the problem that the heating tube of the heater proposed in the above background technology must be integrally molded and cannot be disassembled and assembled.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An in-water heater, comprising:

[0009] The heater body includes a bent heating tube and a spiral heating tube both made of copper material. There are two bent heating tubes, and the upper ends of the two bent heating tubes are connected to the wiring head; one end of the wiring head is connected to the thermostat, a temperature pointer is installed on the surface of the thermostat, and one end of the thermostat is connected to the output line;

[0010] The lower ends of the two bent heating tubes are connected by a spiral heating tube, and the interior of the spiral heating tube and the bent heating tube are both hollow; a spiral heating resistance wire made of a nickel-chromium heat-resistant alloy material is provided inside the bent heating tube and the spiral heating tube; in addition, the inside of the bent heating tube is filled with magnesium oxide powder around the periphery of the heating resistance wire, and ceramic rings are symmetrically distributed on the outer surface of the bent heating tube.

[0011] As a further solution of the utility model: a solid-state relay and a temperature controller are provided inside the temperature controller, and a temperature sensor is installed on the circuit connected to the temperature controller; at the same time, a wire is arranged inside the terminal head, and the wire is electrically connected to the heating resistor wire, the solid-state relay and the temperature controller at the same time.

[0012] As a further solution of the utility model: a ground wire is also installed between the end portions of the upper ends of the two bent heating tubes extending into the interior of the wiring head.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] Compared with the current ceramic water heater, the water heater has the following advantages:

[0015] First, it is assembled by a bent heating tube and a spiral heating tube that can be disassembled in sections and installed as one, and the spiral heating tube is located at the bottom of the two bent heating tubes; through this structural design, the heating length of the entire heating tube can be extended, and at the same time, it can be quickly and conveniently disassembled and installed, which is conducive to the filling of the heating resistance wire inside the heating tube;

[0016] Second, a thermostat is also provided, and the thermostat is used to control the temperature of the entire water heater when heating water. When the specified temperature is reached, the power will be automatically cut off to disconnect the power supply to the energized bent heating tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention.

[0018] Figure 1 The utility model is a schematic structural diagram of a water heater in an embodiment of the present utility model.

[0019] Figure 2 The utility model is a schematic diagram of the installation of a heating tube and a resistance heating wire of a water heater in an embodiment of the utility model.

[0020] Figure 3 The present invention is a temperature control principle diagram of a water heater in an embodiment of the present utility model.

[0021] In the figure: 1- spiral heating tube, 2- bent heating tube, 3- ceramic ring, 4- terminal head, 5- thermostat, 6- temperature pointer, 7- output line, 8- magnesium oxide powder, 9- heating resistance wire, 10- neutral line, 11- live line, 12- conductor wire, 13- heater body, 14- solid state relay, 15- temperature sensor, 16- temperature controller. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] Example

[0024] See also Figure 1 , Figure 2 and Figure 3 , an underwater heater provided in an embodiment of the utility model, the underwater heater comprises:

[0025] The heater body 13 includes a bent heating tube 2 and a spiral heating tube 1. There are two bent heating tubes 2. The upper ends of the two bent heating tubes 2 are connected to the wiring head 4. The wiring head 4 is used to provide the bent heating tube 2 with the power required for temperature heating; one end of the wiring head 4 is connected to the thermostat 5, and a temperature pointer 6 is installed on the surface of the thermostat 5. One end of the thermostat 5 is connected to the output line 7; the connected thermostat 5 is used to control the temperature of the entire water heater when heating water. After reaching the specified temperature, it will automatically cut off the power and disconnect the power supply to the energized bent heating tube 2; and the temperature pointer 6 installed on the outside of the thermostat 5 is used to indicate the heating temperature; the connected output line 7 is used to provide power to the entire water heater when heating water;

[0026] The lower ends of the two bent heating tubes 2 are connected by a spiral heating tube 1, and the connected spiral heating tube 1 is used to make the lower ends of the bent heating tubes 2 pass through, so that the bent heating tube 2 and the spiral heating tube 1 form an integral body; the bent heating tube 2 and the spiral heating tube 1 are both made of copper material, and the inside of the bent heating tube 2 and the inside of the spiral heating tube 1 are both hollow, and a heating resistance wire 9 is provided inside the bent heating tube 2 and the inside of the spiral heating tube 1, and the heating resistance wire 9 is spiral inside the bent heating tube 2 and the inside of the spiral heating tube 1, and the installed heating resistance wire 9 is made of nickel-chromium heat-resistant alloy material; at the same time, the inside of the bent heating tube 2 is also filled with magnesium oxide powder 8 on the periphery of the heating resistance wire 9, and ceramic rings 3 are symmetrically distributed on the outer surface of the bent heating tube 2;

[0027] In the embodiment of the utility model, when the water heater is used, the heating end, i.e., the bent heating tube 2 and the spiral heating tube 1, are simultaneously inserted into the water to be heated, and the entire water heater is powered by the output line 7. After the output line 7 provides power, the current is shunted to the inside of the bent heating tube 2 through the terminal head 4, and after the power is provided to the spiral heating resistance wire 9 placed inside the bent heating tube 2, the heating resistance wire 9 is connected to the power supply for resistance heating, and this heat is quickly transferred to the bent heating tube 2, so that the outer side of the bent heating tube 2 is heated to heat the water to be heated;

[0028] Compared with the traditional U-shaped heating tube, the spiral design of the heating resistance wire 9, the bending design of the bent heating tube 2 and the spiral design of the spiral heating tube 1 are all aimed at extending the heating length of the heating resistance wire 9, thereby increasing the heating speed; and by filling the bent heating tube 2 with magnesium oxide powder 8, the filled magnesium oxide powder 8 has multiple functions. First, the position of the heating resistance wire 9 can be fixed to ensure that the heating resistance wire 9 placed inside the bent heating tube 2 is not prone to shaking; second, the higher thermal conductivity can quickly transfer the heat generated by the heating resistance wire 9 when it is heated by resistance to the bent heating tube 2; third, the excellent insulation performance, because the magnesium oxide powder has sufficient insulation performance and electrical strength, so the heating resistance wire 9 can generate heat to transfer the heat to the bent heating tube 2 while not transferring the current to the surface of the bent heating tube 2, thereby reducing the risk of leakage of the bent heating tube 2;

[0029] In addition, the ceramic ring 3 set on the outside of the bent heating tube 2 also has multiple functions. For example, after power is turned on, the heating resistor 9 can radiate a far red line when heating, which greatly increases the heating efficiency; secondly, it can also limit the outer side of the heated bent heating tube 2 for isolation protection; for example, when the underwater heater is placed at the heating pipe position of the fish tank, the ceramic ring 3 set on the outside of the bent heating tube 2 can be squeezed and contacted with the inner wall of the heating pipe to fix the position of the entire underwater heater, and secondly, it has good insulation and heat insulation protection performance to prevent the high-temperature or charged bent heating tube 2 from directly contacting the inner wall of the heating tube and causing damage to the inner wall of the heating tube;

[0030] See also Figure 1 and Figure 3 In the embodiment of the utility model, a solid-state relay 14 and a temperature controller 16 are provided inside the thermostat 5, and a temperature sensor 15 is installed on the circuit connected to the temperature controller 16; at the same time, a wire 12 is arranged inside the terminal head 4, and the wire 12 is electrically connected to the heating resistor wire 9, the solid-state relay 14 and the temperature controller 16 at the same time; in addition, a ground wire is also installed between the end portions of the upper ends of the two bent heating tubes 2 extending into the terminal head 4;

[0031] In the embodiment of the utility model, when the operation is adjusted to the temperature to be heated, the temperature sensor 15 is used to sense the change in water temperature, and the neutral line 10 and the live line 11 inside the output line 7 simultaneously provide power to the wire 12 inside the terminal head 4 (a ground wire is also installed inside the power output line 7, which is not drawn in the drawings of the specification due to drawing reasons), and the wire 12, the solid-state relay 14 and the heater body 13 constitute a complete circuit loop, which is used to conduct energized resistance heating to the heating resistance wire 9 filled in the heater body 13;

[0032] When the specified temperature is reached, the temperature sensor immediately feeds back a signal, causing a circuit breaker in the complete circuit loop, and stops heating the water.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water heater, comprising: The heater body (13) is characterized in that: The heater body (13) comprises a bent heating tube (2) and a spiral heating tube (1) both made of copper material. The number of the bent heating tubes (2) is two, and the upper ends of the two bent heating tubes (2) are connected to a wiring head (4); one end of the wiring head (4) is connected to a temperature controller (5), a temperature pointer (6) is installed on the surface of the temperature controller (5), and one end of the temperature controller (5) is connected to an output line (7); the lower ends of the two bent heating tubes (2) are connected via the spiral heating tube (1); The interior of the spiral heating tube (1) and the interior of the bent heating tube (2) are both in a hollow state; a spiral heating resistance wire (9) made of a nickel-chromium heat-resistant alloy material is provided inside the bent heating tube (2) and the interior of the spiral heating tube (1); In addition, the interior of the bent heating tube (2) is filled with magnesium oxide powder (8) around the periphery of the heating resistance wire (9), and ceramic rings (3) are symmetrically distributed on the outer surface of the bent heating tube (2).

2. The underwater heater according to claim 1, characterized in that: The temperature controller (5) is provided with a solid-state relay (14) and a temperature controller (16), and a temperature sensor (15) is installed on the circuit connected to the temperature controller (16); at the same time, a wire (12) is arranged inside the wiring head (4), and the wire (12) is electrically connected to the heating resistance wire (9), the solid-state relay (14) and the temperature controller (16) at the same time.

3. The underwater heater according to claim 1, characterized in that: A ground wire is also installed between the end portions of the two bent heating tubes (2) extending into the interior of the wiring head (4).

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