CN220931370U - Heating pipe, heating assembly and heating faucet - Google Patents

Abstract

The utility model provides a heating pipe, a heating assembly and a heating faucet. The heating pipe comprises a hot water pipe and an electric heating element for heating the hot water pipe, and the electric heating element is arranged on the outer surface of the hot water pipe; the outer surface of the hot water pipe is provided with a plurality of electric connection parts, each electric connection part comprises a plurality of power supply wiring parts used for being connected with a power supply line, each power supply wiring part is electrically connected with the electric heating element, and the power supply wiring parts are arranged in a row along the axial direction of the hot water pipe. When the heating pipe is inserted into the water inlet joint or the water outlet joint, the water inlet joint or the water outlet joint is only required to be provided with the avoidance position at one position at most, and even the avoidance position is not required, so that the design is simplified, and the strength of the water inlet joint or the water outlet joint is improved. And the insulating glue on the power supply wiring part outside the connector cannot be scraped off by the connector. The power supply line can be bundled into a bundle only by slightly bending, so that the wiring is convenient, and the assembly is simpler.

Description

Heating pipe, heating assembly and heating faucet

Technical Field

The utility model relates to the technical field of faucets, in particular to a heating pipe, a heating component with the heating pipe and a heating faucet with the heating component.

Background

In recent years, heating faucets have been increasingly selected to provide hot water faster and less waiting time than conventional faucets. This allows the user to use the hot water more quickly. Most of the current heating faucets use electric heating.

The heating faucet comprises a hot water pipe and an electric heating element, wherein water inlet joints and water outlet joints can be arranged at two ends of the hot water pipe, water can be led into the hot water pipe through the water inlet joints, and water can be led out of the hot water pipe through the water outlet joints. The length of the electrical heating element is typically close to the length of the hot water pipe, which may enhance the heating effect. The electric heating element is typically connected to the power supply line by a plurality of wire connection portions which are arranged in this order in the circumferential direction of the hot water pipe and are close to the ends of the hot water pipe. Two ends of the hot water pipe are respectively inserted into the water inlet joint and the water outlet joint.

Because the wiring part is close to the end part of the hot water pipe, when the two ends of the hot water pipe are inserted into the water inlet joint and the water outlet joint, the water inlet joint or the water outlet joint may shield the wiring part, and therefore, the water inlet joint and the water outlet joint need to be reserved for avoiding. After the power supply line is connected to the wiring portion, the connection portion is usually protected by covering with an insulating adhesive. When the water inlet joint and the water outlet joint are installed, the corresponding joints may cause the insulation cement to be broken. Also, since the power supply lines are usually bundled when they extend out of the heating faucet, the power supply lines connected to the circumferentially arranged wire connection portions often need to be bypassed within the heating faucet, increasing the difficulty of assembly in the case of miniaturization of the heating faucet.

Disclosure of utility model

In order to at least partially solve the problems of the prior art, according to one aspect of the present utility model, there is provided a heating tube comprising a hot water tube and an electrical heating element for heating the hot water tube, the electrical heating element being provided on an outer surface of the hot water tube; the outer surface of the hot water pipe is provided with a plurality of electric connection parts, each electric connection part comprises a plurality of power supply wiring parts used for being connected with a power supply line, each power supply wiring part is electrically connected with the electric heating element, and the power supply wiring parts are arranged in a row along the axial direction of the hot water pipe.

When the heating pipe is inserted into the water inlet joint or the water outlet joint, the water inlet joint or the water outlet joint is only required to be provided with the avoidance position at one position at most, and even the avoidance position is not required, so that the design is simplified, and the strength of the water inlet joint or the water outlet joint is improved. And the insulating glue on the power supply wiring part outside the connector cannot be scraped off by the connector. The power supply line can be bundled into a bundle only by slightly bending, so that the wiring is convenient, and the assembly is simpler.

Illustratively, the electrical heating element includes an electrically heated film formed on an outer surface of the hot water pipe.

In the technical scheme, the electric heating film has better heat transfer effect, and most of heat can be transferred to water to be heated. The electrothermal film is not easy to be broken, the service life is longer, and the production cost is lower. At the same power, the volume is generally smaller than that of heating pipes adopting other types of electric heating elements, and the heating pipes are more compact. And the heating pipe has small thermal inertia and higher response speed.

The electrothermal film is patterned to include one or more heat generating wires, each heat generating wire including a first free end, a second free end, and a plurality of first and second sub heat generating wires connected between the first and second free ends, wherein the plurality of first sub heat generating wires extend along an axial direction of the hot water pipe, the second sub heat generating wire is connected between ends of the first sub heat generating wires, the first and second free ends of the one or more heat generating wires are spaced apart from each other along the axial direction to form a mounting gap, a plurality of power supply wiring parts are disposed within the mounting gap, and the electrothermal film is electrically connected to the plurality of power supply wiring parts through the first and second free ends.

Therefore, the first sub heating circuit of the heating circuit is wired in a straight line extending along the axial direction, the heating circuits can be arranged more regularly, wiring difficulty is reduced, and circuit parameters of the electrothermal film can be calculated conveniently and follow-up adjustment and optimization can be carried out. By arranging the plurality of power supply wiring parts in the installation gap, enough gaps can be formed between the plurality of power supply wiring parts and the adjacent first sub-heating circuit, and creepage between the plurality of power supply wiring parts and between the power supply wiring parts and the adjacent first sub-heating circuit can be prevented.

The heat generating circuit is exemplified by a plurality of power supply wiring parts, the plurality of power supply wiring parts comprise a first power supply wiring part and a second power supply wiring part, the number of the first power supply wiring parts is less than that of the second power supply wiring parts, and the first free ends of the plurality of heat generating circuits are electrically connected to the first power supply wiring parts; and the second free ends of the heating circuits are electrically connected to the second power supply wiring part.

The operation of the first heating circuit, the second heating circuit can thereby be controlled independently, respectively, by a common power supply line connected to the same first power supply wiring section, and by two independent power supply lines connected to the second power supply wiring section, respectively.

Illustratively, a first sub-heating circuit adjacent to the plurality of power supply wiring parts along a circumferential direction around the hot water pipe is disconnected and forms a disconnected end, a dodging gap dodging the plurality of power supply wiring parts is formed between the disconnected end and the disconnected end, and a connecting circuit for electrically connecting the disconnected end is arranged in the dodging gap, wherein the connecting circuit is connected to one side of the disconnected end, which is far away from the plurality of power supply wiring parts.

The offset connecting line can leave an avoidance space for the power supply wiring part, and the line diameter can be unchanged.

The connection line is bent toward a side away from the plurality of power supply wiring portions.

The bent connecting line can also leave an avoidance space for the power supply wiring part.

Illustratively, the connection line is thinner than the first sub-heat generating line.

The thinner connecting line can leave a larger space to avoid the power supply wiring part under the condition of unchanged gap.

Illustratively, the hot water pipe includes an electrically conductive pipe body and an electrically insulating layer formed on an outer surface of the electrically conductive pipe body, and the electrothermal film is formed on the outer surface of the electrically insulating layer.

Therefore, the hot water pipe adopts the conductive pipe body, so that the cost can be reduced. An electrical insulating layer is arranged between the outer surface of the conductive pipe body and the electrical heating element, so that short circuit and electric leakage can be avoided. The electrothermal film can be directly processed on the electric insulating layer, and has good heating effect and lower production cost.

Illustratively, a first gap is provided between the electrically insulating layer and an end of the electrically conductive tube, and the plurality of electrical connections further includes a ground disposed on the electrically conductive tube within the first gap.

The earthing part can protect user's safety when the damage appears in the electric insulating layer and leads to the electric leakage, can also be when electric heating element adopts alternating current power supply, the induced electricity of electricity through the electric insulating layer that leaks.

Illustratively, the ground portion is arranged in the same column as the plurality of power supply wiring portions.

The power supply line and the ground line are usually bundled together, so that the ground portion and the power supply wiring portion provided in the same column are more convenient for wiring. The grounding wire which is closer to the power supply line can form a shielding effect on the power supply line to a certain extent, so that the influence of electromagnetic waves possibly generated by the power supply line on the signal line is reduced.

Illustratively, a second gap is provided between the electrothermal film and the edge of the insulating layer.

The second gap can avoid the arc generated by the breakdown air from damaging the heating pipe.

Illustratively, the hot water pipe is made of an electrically insulating material.

No additional electric insulating layer is needed, and the production is easy and the safety is higher.

Illustratively, the electrical heating element surrounds the hot water pipe.

The contact area of the electric heating element and water is larger, the water is heated more uniformly, and the temperature of the water rises more quickly under the same heating power.

Illustratively, a plurality of power supply wiring portions are provided in the middle of the hot water pipe.

The power supply wiring parts are arranged in the middle of the hot water pipe, interference can be avoided during assembly, the connecting piece is prevented from being worn by insulating glue arranged on the power supply wiring parts, and assembly is facilitated.

According to another aspect of the present utility model, there is provided a heating assembly comprising the heating tube described above; and the heating pipe support is internally provided with an installation cavity, the heating pipe is arranged in the installation cavity, the heating pipe support is also provided with a slot extending along the axial direction, the slot is communicated with the installation cavity, and the slot exposes a plurality of power supply wiring parts.

Compared with the processing of the notch for avoiding the power supply wiring part and the power supply line, the grooving can greatly simplify the processing technology and reduce the processing cost. And wiring can be completed by only slightly bending the power supply line, so that assembly is simpler.

The heating assembly further includes a power supply line, an end of which is electrically connected to the plurality of power supply wiring parts.

The heating assembly further comprises a temperature controller, which is connected to the heating pipe support at the slot.

The temperature controller can timely control the power supply circuit of the heating body to be disconnected, so that accidents are prevented. The temperature controller is arranged at the grooving position, so that the heating assembly can be thinner to a certain extent, and the overlarge volume of the heating faucet is avoided.

Illustratively, the heating assembly further comprises: the water inlet connector is provided with a hot water inlet connector; and a water outlet connector, wherein a hot water outlet connector is arranged on the water outlet connector, two ends of the hot water pipe are respectively connected to the hot water inlet connector and the hot water outlet connector, and a plurality of electric connection parts are positioned between the water inlet connector and the water outlet connector.

Compared with the electric connection part arranged in one of the water inlet joint and the water outlet joint, the water inlet joint or the water outlet joint is not required to be provided with a avoidance bit, so that the structure is simplified. In the case that the electric connection part is covered with insulating glue after connecting the ground wire (if any) and the power supply wire, the electric connection part of the heating pipe does not need to be inserted into a water inlet joint or a water outlet joint, and the possibility of interference does not exist.

Illustratively, the slots extend through the heating tube mount in an axial direction.

The through slotting is adopted, and the heating pipe support can adopt the processing mode of an extrusion piece, so that the cost is further reduced.

According to another aspect of the present utility model there is provided a heating faucet comprising a faucet body housing and a heating assembly as described above, the heating assembly being disposed within the faucet body housing.

In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

Advantages and features of the utility model are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings are included to provide an understanding of the utility model and are incorporated in and constitute a part of this specification. Embodiments of the present utility model and their description are shown in the drawings to explain the principles of the utility model. In the drawings of which there are shown,

FIG. 1 is a perspective view of a heating tube in accordance with an exemplary embodiment of the present utility model;

FIG. 2a is a tube wall expansion of the heating tube shown in FIG. 1;

FIG. 2b is an enlarged view of a portion of an installation gap and a relief gap according to another exemplary embodiment of the present utility model;

FIG. 2c is an enlarged view of a portion of a mounting gap and a relief gap in accordance with yet another exemplary embodiment of the present utility model;

FIG. 3 is a perspective view of a heating assembly according to an exemplary embodiment of the present utility model;

FIG. 4 is a perspective view of the heating assembly of FIG. 3 with the heating tube removed;

FIG. 5 is a perspective view of the heating assembly of FIG. 3 after mounting the power and ground wires;

FIG. 6 is a perspective view of a heating faucet of an exemplary embodiment of the present utility model;

FIG. 7 is a perspective view of the heating faucet shown in FIG. 6 with the main faucet body housing removed.

Wherein the above figures include the following reference numerals:

100. Heating pipes; 110. a hot water pipe; 120. an electric heating element; 121. a power supply wiring section; 1211. a first power supply wiring section; 1212. a second power supply wiring section; 122. a heating circuit; 1221. a first free end; 1222. a second free end; 1223. a first sub-heating circuit; 1224. a second sub-heating circuit; 1225. a break end; 122a, a first heating circuit; 122b, a second heating circuit; 123. a conductive tube; 124. an electrically insulating layer; 125. a first gap; 126. a grounding part; 127. a second gap; 128a, mounting gap; 128b, a back-off gap; 129. a connection line; 200. a heating assembly; 210. a heating pipe support; 220. a mounting cavity; 230. slotting; 240. a temperature controller; 241. a mounting portion; 242. a detection section; 251. a power supply line; 252. a ground wire; 260. a water inlet joint; 261. a hot water inlet port; 270. a water outlet joint; 271. a hot water outlet port; 310. a tap body shell.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the utility model. However, it will be understood by those skilled in the art that the following description illustrates preferred embodiments of the utility model by way of example only and that the utility model may be practiced without one or more of these details. Furthermore, some technical features that are known in the art have not been described in detail in order to avoid obscuring the utility model.

According to one aspect of the present utility model, a heating tube is provided. As shown in fig. 1, the heating pipe 100 may include a hot water pipe 110 and an electric heating element 120 for heating the hot water pipe 110. The electric heating element 120 may be provided on an outer surface of the hot water pipe 110. A plurality of electrical connection parts may be provided on the outer surface of the hot water pipe 110, including a plurality of power supply wiring parts 121 for connecting the power supply lines 251. The plurality of power supply wiring parts 121 may be electrically connected with the electric heating element 120, and the plurality of power supply wiring parts 121 may be aligned in a line in the axial direction of the hot water pipe 110.

The hot water pipe 110 is used to deliver hot water to be heated. The electric heating element 120 is provided at an outer surface of the hot water pipe 110. The electric heating element 120 is used to heat the hot water pipe 110 and the water flowing through the hot water pipe 110. For conventional pure resistive heating elements, the electrical heating element 120 disposed on the outer surface of the hot water pipe 110 may have a relatively large surface area for better heating. On the other hand, the electric heating element 120 provided outside the hot water pipe 110 is easier to assemble and produce, is lower in cost, and can be more powerful without considering the problem of insulation with the water inside the hot water pipe 110. In embodiments not shown, the electrical heating element may also include one or more of an infrared heating element, an electromagnetic heating element, and the like.

The electric heating element 120 is required to be supplied with power during operation, and the outer surface of the hot water pipe 110 may be provided with a plurality of power supply wiring parts 121. The plurality of power supply wiring parts 121 are electrically insulated from each other. The electrical heating element 120 may include electrical connections for connecting to a power source. The electric heating element 120 may be electrically connected to the power supply wiring portion 121 through an electrical connection terminal. The power supply wire connection part 121 may include a pad for welding to the power supply wire and/or a metal dome for pressing on the power supply wire. The power supply wiring part 121 may take various structures existing or possible to occur in the future, and the present application is not intended to limit the manner in which the power supply wiring part 121 is connected to the power supply line. Illustratively, the electrical heating element 120 may be powered by alternating current, in which case the electrical connections of the electrical heating element 120 need to be connected to a neutral and a hot wire, respectively. A first portion of the plurality of power supply wiring parts 121 may be electrically connected to one end of the electric heating element 120, and a second portion of the plurality of power supply wiring parts 121 may be electrically connected to the other end of the electric heating element 120. The power supply connection 121 of the first portion may be electrically connected to the neutral power supply line. The power supply connection 121 of the second part may be electrically connected with a live power supply line. For example, the electric heating element 120 may be supplied with direct current, in which case the power supply wiring portion 121 of the first portion may be electrically connected to a power supply line connected to the positive electrode of the power supply. The power supply wiring portion 121 of the second portion may be electrically connected to a power supply line connected to the negative electrode of the power supply. For an electric heating element such as a heating wire, an electromagnetic coil, etc., two ends thereof are respectively formed with two electric connection terminals. For an electric heating element such as an electrothermal film, if the electrothermal film is a film-like structure of a whole piece, the electric connection terminal may be a region thereon to which the power supply wiring portion 121 is connected. Of course, the electrothermal film may also be patterned with a pattern of lines, in which case the electrical connection terminals may be the ends of the lines.

The plurality of power supply wiring parts 121 may be aligned in a row in the axial direction of the hot water pipe 110. The heating pipe 100 may be inserted into the water inlet joint and the water outlet joint, and at this time, since the plurality of power supply connection parts 121 are spaced apart from each other, a part of the power supply connection parts 121 are exposed from the water inlet joint or the water outlet joint, or all of them are exposed.

In the conventional heating pipes, the power supply connection parts are arranged along the circumferential direction of the hot water pipe, for example, 3 power supply connection parts are arranged around the hot water pipe at 120 degrees, and at this time, if the heating pipe is to be inserted into the water inlet joint, the water inlet joint needs to be provided with three avoidance positions. In contrast, when the heating pipe 100 of the present application is inserted into the water inlet connector or the water outlet connector, the water inlet connector or the water outlet connector only needs to be provided with the avoidance bit at one place at most, and even the avoidance bit is not needed, so that the design is simplified, and the strength of the water inlet connector or the water outlet connector is improved. Further, since the plurality of power supply wiring parts 121 are arranged in the axial direction of the hot water pipe 110, it is inevitable that the power supply wiring parts 121 are located outside the joint based on the conventional joint and the size of the power supply wiring parts, and the insulation paste on the power supply wiring parts 121 located outside the joint is not scraped off by the joint. In addition, the plurality of power supply wiring parts 121 are arranged in a row along the axial direction of the hot water pipe 110, and the power supply wires thereof can be bundled by only slightly bending, so that the wiring is convenient and the assembly is simpler.

Illustratively, the electrical heating element 120 may include an electrically heated film formed on an outer surface of the hot water pipe 110. With continued reference to fig. 1, the electrothermal film formed on the outer surface of the hot water pipe 110 has a better heat transfer effect because there is no gap, and heat can be mostly transferred to the water to be heated, as compared with the heating wire surrounding the hot water pipe 110. The electrothermal film is not easy to be broken, the service life is longer, and the production cost is lower. The heating tube 100 using the electrothermal film is generally smaller and more compact than the heating tube using the other type of electric heating element 120 under the same power. And the heating pipe has small thermal inertia and higher response speed.

The heating element formed by the electrothermal film can be one or more of a thick film heater and a thin film heater. The processes of thick film and thin film heaters themselves are known in the art and the improvements herein are not to the thick film and thin film heaters themselves and therefore their processes will not be described in further detail. As shown in fig. 2a, the electrothermal film may be formed on the hot water pipe 110 to have a predetermined pattern using one or more of printing, photolithography, and 3D printing. The electrothermal film may include an elongated wire-shaped heat generating circuit 122 to increase resistance and heat generating efficiency. By properly patterning the heat generating circuit 122, it may have a smaller parasitic inductance and may maximally convert electrical energy into thermal energy in case of voltage regulation by, for example, alternating current power supply or Pulse Width Modulation (PWM). Compared with the traditional heating wire, the heating efficiency is higher. Preferably, the heating wire 122 should occupy as large an area as possible of the outer surface of the hot water pipe 110, the thickness of the heating wire 122 should be uniform, and the current passing through the heating wire 122 of the same width should be uniform, so that the outer surface area of the hot water pipe 110 can be effectively utilized, and the material utilization rate and heating effect can be improved.

Illustratively, with continued reference to fig. 2a, the electrothermal film may be patterned to include one or more heat-generating wires 122. Each heat generating circuit 122 may include a first free end 1221, a second free end 1222, and a plurality of first and second sub-heat generating circuits 1223, 1224 connected between the first and second free ends 1221, 1222. Wherein a plurality of first sub-heating lines 1223 may extend along an axial direction of the hot water pipe 110, and a second sub-heating line 1224 may be connected between ends of the first sub-heating lines 1223. For example, there may be two first sub-heat generating lines 1223, in which case the ends of the two first sub-heat generating lines 1223 may be connected by one second sub-heat generating line 1224. The number of first sub-heating wires 1223 may be greater, and the number of second sub-heating wires 1224 may be increased. It is understood that the first sub-heat generating circuit 1223 is connected by the second sub-heat generating circuit 1224 to form the heat generating circuit 122, and two ends of the heat generating circuit 122 form the first free end 1221 and the second free end 1222, respectively.

In designing the wiring, it is preferable to lay the heat generating wiring 122 over the outer surface of the hot water pipe 110 because only a single layer wiring is possible, and the wiring cannot be crossed. The first sub-heating wires 1223 are wired in a straight line manner, which is the simplest method, and the end portions of the first sub-heating wires 1223 may be connected by using a second sub-heating wire 1224, that is, the first sub-heating wires 1223 are connected by the second sub-heating wire 1224, and the second sub-heating wires 1224 may be, for example, straight or curved. The wiring can facilitate calculation of circuit parameters of the electrothermal film such as resistance, parasitic capacitance, parasitic inductance and the like, and subsequent adjustment and optimization.

The first free end 1221 and the second free end 1222 of the heat generating circuit 122 may be spaced apart from each other along the axial direction to form the mounting gap 128a. The plurality of power supply wiring parts 121 may be disposed in the installation gap 128a, and the electrothermal film may be electrically connected to the plurality of power supply wiring parts 121 through the first free end 1221 and the second free end 1222 of the heating wire 122. In embodiments where the heat generating circuit 122 includes a plurality of heat generating circuits, the mounting gap 128a between the first free end 1221 and the second free end 1222 may be formed by all of the heat generating circuits in common. In other words, the first free ends 1221 of the different heat generating circuits may be proximate to one another and the second free ends 1222 of the different heat generating circuits may be proximate to one another, with all of the first free ends 1221 being spaced apart from all of the second free ends 1222 to collectively form the mounting gap 128a. This makes it possible to make the installation gap 128a sufficiently large, and to make all of the first free end 1221 and the second free end 1222 relatively close to the power supply wiring part 121 in the installation gap 128a, and to electrically connect the first free end 1221 and the second free end 1222 to the power supply wiring part 121. The power supply wiring parts 121 need to be connected to power supply lines, and thus, the potential difference between the plurality of power supply wiring parts 121 is maximized. In order to prevent the creepage from occurring due to the excessively small interval between the power supply wiring parts 121, the heat generating wires 122 form the installation gap 128a in the axial direction, and the provision of the power supply wiring parts 121 in the installation gap 128a can appropriately increase the gap between the power supply wiring parts 121 and the adjacent heat generating wires 122.

To ensure that the heating power of the electrothermal film meets the requirement, the heating circuit 122 cannot be too fine. In addition, since the plurality of power supply wiring parts 121 are disposed along the axial direction, the first sub-heating circuit 1223 of the heating circuit 122 is in a straight line extending along the axial direction, so that the heating circuits 122 can be arranged more regularly, the wiring difficulty is reduced, and the circuit parameters of the electrothermal film can be calculated and the subsequent adjustment and optimization can be performed. By disposing the plurality of power feeding wire parts 121 in the mounting gap 128a, a sufficiently large gap can be provided between the plurality of power feeding wire parts 121 and between the adjacent first sub-heat generating circuit 1223, and creepage between the plurality of power feeding wire parts 121 and between the power feeding wire parts 121 and the adjacent first sub-heat generating circuit 1223 can be prevented.

Illustratively, the heat generating wires 122 may be plural, and the plurality of power supply wiring parts 121 may include a first power supply wiring part 1211 and a second power supply wiring part 1212. The number of the first power supply wiring parts 1211 may be less than the number of the second power supply wiring parts 1212, wherein the first free ends 1221 of the plurality of heat generating wires 122 may be electrically connected to the first power supply wiring parts 1211, and the second free ends 1222 of the plurality of heat generating wires 122 may be electrically connected to the second power supply wiring parts 1212. In the specific embodiment shown in fig. 2a, the heat generating circuit 122 may include a first heat generating circuit 122a and a second heat generating circuit 122b. The first and second heat generating wires 122a and 122b are meandering and interposed to increase the lengths of the first and second heat generating wires 122a and 122b in a limited space, thereby increasing the resistance. The first and second free ends 1221 and 1222 of the first and second heat generating wires 122a and 122b respectively form electrical connection terminals. One electrical connection end of the first heating wire 122a is connected to the first power supply wiring portion 1211, and one electrical connection end of the second heating wire 122b is also connected to the same first power supply wiring portion 1211. The second power supply wiring parts 1212 may be two, and 1212a and 1212b, respectively. The other electrical connection end of the first heating wire 122a is connected to the second power supply wiring portion 1212a, and the other electrical connection end of the second heating wire 122b is connected to the other second power supply wiring portion 1212b. Thus, the operations of the first heating wire 122a and the second heating wire 122b can be controlled independently by the common power supply wire connected to the same first power supply wire portion 1211 and the two independent power supply wires connected to the second power supply wire portion 1212, respectively. For example, the first heating line 122a may be controlled to operate by supplying power to the first power supply wiring portion 1211 and the second power supply wiring portion 1212 a; the second heat generating circuit 122b can be controlled to operate by supplying power to the first power supply wiring portion 1211 and the second power supply wiring portion 1212 b; or by supplying power to the first power supply wiring portion 1211, the second power supply wiring portion 1212a, and the second power supply wiring portion 1212b, both the first heating wire 122a and the second heating wire 122b may be controlled to operate. Preferably, the first and second heat generating lines 122a and 122b may have different levels of heat generating power, and thus, the heat generating lines 122 may have three different levels of heat generating power. Also, the number of the heat generating wires 122 and/or the number of the second power supply wiring parts 1212 may be increased, and more levels of heat generating power may be obtained. Of course, the heating line connected to the same first power supply wiring portion 1211 has its upper limit limited by the current-carrying capacity of the power supply line.

Illustratively, as shown in fig. 2a, the first sub-heat generating line 1223 adjacent to the plurality of power supply wiring parts 121 in the circumferential direction around the hot water pipe 110 (i.e., the up-down direction in fig. 2 a) is disconnected and a disconnected end 1225 is formed. The disconnected ends 1225 are spaced apart and form the escape gaps 128b that escape the plurality of power supply wiring portions 121. A connection line 129 that electrically connects the disconnected end 1225 may be provided in the relief gap 128b. The connection line 129 may be connected at a side of the disconnection end 1225 remote from the plurality of power supply wiring parts 121. In fig. 2a, an embodiment of two heat generating wires 122 is shown, each heat generating wire 122 being broken at a straight first sub heat generating wire 1223 and forming two broken ends 1225. Wherein the connection line 129 connected between the upper two break ends 1225 is connected to a side of the break ends 1225 remote from the plurality of power supply wiring parts 121. In this way, the upper connection line 129 can be kept at a sufficient interval with the first sub-heat generating line 1223 adjacent thereto (above the connection line 129). And the connection line 129 connected between the lower two disconnected ends 1225 may be bent toward a side away from the plurality of power supply wiring parts 121. Therefore, the connection line 129 may also be bent toward a side away from the plurality of power supply wiring parts 121, for example. In the embodiment shown in fig. 2a, the connection line 129 is thinner than the first sub-heat generating line 1223 to provide a space for avoiding the power supply wiring part 121. For example, as shown in fig. 2b to 2c, a part of the connection line 129 (for example, the connection line 129 on the upper side) may be bent only in a direction away from the power supply wiring portion 121, and the width thereof may be kept unchanged. Of course, in other embodiments not shown, all of the connection lines 129 may have the same width as the first sub-heat generating line 1223. When a part or all of the connecting lines 129 are large in width, it may be necessary to adjust the positions of the first sub-heat generating lines 1223 adjacent to the connecting lines 129 so as to ensure that the gaps between the heating lines are not excessively small. For example, in the case where a part or all of the connection lines 129 are thinner than the first sub-heat generating line 1223, a larger space may be left to avoid the power supply wiring part 121 without changing the gap.

Since the thickness of the heating line is the same, the smaller the width thereof, the greater the resistance. Therefore, a material having a smaller resistivity can be used for the connection line 129 thinner than the first sub-heat generating line 1223, and the excessive resistance at this point can be prevented, and the voltage division is large, so that the line is burned out.

Illustratively, with continued reference to fig. 2a, the hot water pipe 110 may include an electrically conductive pipe body 123 and an electrically insulating layer 124 formed on an outer surface of the electrically conductive pipe body 123, with an electrically heated film formed on an outer surface of the electrically insulating layer 124. Typical thermally conductive materials are metallic and therefore also electrically conductive, while thermally conductive electrically insulating materials are relatively costly. To avoid short-circuiting the electric heating element 120 to the conductive pipe body 123 or to leak electricity to the conductive pipe body 123 and thus charge the hot water, an electric insulation layer 124 may be provided between the outer surface of the conductive pipe body 123 and the electric heating element 120. The electrothermal film described above may be directly processed on the electrically insulating layer 124. By way of example and not limitation, the hot water pipe 110 may include a copper tube and a ceramic insulating layer on its outer surface. Thus, the use of the conductive pipe body 123 for the hot water pipe 110 can reduce the cost. An electrical insulation layer 124 is provided between the outer surface of the conductive pipe body 123 and the electrical heating element 120, so that short circuits and electric leakage can be avoided. The electrothermal film can be directly processed on the electric insulation layer 124, and has good heating effect and lower production cost.

Illustratively, the hot water pipe 110 may be made of an electrically insulating material. The hot water pipe 110 may also be made of, for example, alumina ceramic. Alumina ceramic has excellent thermal conductivity and electrical insulation properties, and the electric heating element 120 may be disposed thereon. Illustratively, the electrothermal film may be directly printed on the outer surface of the hot water pipe 110 of the electrically insulating material, without providing an additional electrically insulating layer 124, which is easy to manufacture and safer.

Illustratively, a first gap 125 may be provided between the electrically insulating layer 124 and the end of the electrically conductive tubular body 123. The plurality of electrical connections also includes a ground 126. The grounding portion 126 is disposed on the conductive tube 123 and is located in the first gap 125. The grounding portion 126 may protect the safety of a user when the electrical insulation layer 124 is broken to cause electric leakage, and may bleed off the induced electricity passing through the electrical insulation layer 124 when the electrical heating element 120 is powered by alternating current.

For example, a second gap 127 may be provided between the edge of the electrical heating element 120 and the edge of the insulating layer 124. To ensure the power of the heating tube 100, the voltage of the electric heating element 120 is generally high, and therefore, if the edge of the electric heating element 120 is too close to the grounded first gap 125 or the grounded portion 126, the air may be broken down to generate an arc, and the heating tube 100 may be damaged. Accordingly, the second gap 127 needs to have an appropriate width, and the specific width may be designed according to the rated voltage of the heating pipe 100.

Illustratively, the ground portion 126 is arranged in the same column as the plurality of power supply wiring portions 121, referring back to fig. 1. The power supply line and the ground line are usually bundled together, so that the ground portion and the power supply wiring portion provided in the same column are more convenient for wiring. Since the heating tap is not too bulky, the supply line is spaced less from the signal line for controlling the tap. The grounding wire which is closer to the power supply line can form a shielding effect on the power supply line to a certain extent, so that the influence of electromagnetic waves possibly generated by the power supply line on the signal line is reduced.

Illustratively, the electrical heating element 120 may surround the hot water pipe 110. Since the electric heating element 120 generates heat after being energized, heat needs to be transferred to the water in the hot water pipe 110, the larger the contact area between the electric heating element 120 and the water is, the more uniform the heating of the water is, and the faster the temperature of the water rises under the same heating power.

Illustratively, a plurality of power supply wiring parts 121 may be provided at the middle of the hot water pipe 110. The two ends of the hot water pipe 110 may be plugged with connectors (e.g., water inlet connector and water outlet connector) for connecting waterways, and the plurality of power supply connection parts 121 are arranged in the middle of the hot water pipe 110, so that interference can be avoided during assembly, and the connectors are prevented from wearing insulating glue arranged on the power supply connection parts 121, so that assembly is facilitated.

According to another aspect of the present utility model, there is provided a heating assembly, as shown in fig. 3-4, the heating assembly 200 may include the heating tube 100 described above, and a heating tube holder 210. As shown in fig. 4, a mounting cavity 220 may be provided in the heating tube holder 210, and the heating tube 100 may be provided in the mounting cavity 220. The heating tube holder 210 may be further provided with a slot 230 extending in an axial direction, and the slot 230 may communicate with the mounting cavity 220. Illustratively, the slots 230 extend through the heater tube holder 210 in an axial direction to facilitate machining. The slot 230 may expose the plurality of power supply wire parts 121. Since the heating pipe 100 has a large power, a large current is generally required to supply power, and thus the power supply wire portion 121 and the connected power supply wire 251 are thick. The provision of the slot 230 may reserve an installation space for the power supply wire connection 121 and the power supply wire 251. The heating pipe support 210 is in a C-shaped structure, the reserved slots 230 avoid the power supply wiring part 121 and the power supply wires 251, and the heating pipe support 210 can adopt the processing mode of an extrusion piece. Compared with the processing of the notch for avoiding the power supply wiring part 121 and the power supply line 251, the processing technology can be greatly simplified, and the processing cost can be reduced. As described above, the circumferentially arranged power supply wiring portion may require the power supply line to be circumferentially arranged within the heating faucet, and the assembly is simpler than the wiring can be completed by only slightly bending the power supply line 251 as shown in fig. 6.

For example, referring to fig. 5, the heating assembly 200 may further include a power supply line 251, an end of the power supply line 251 being electrically connected to the plurality of power supply wire parts 121. The power supply line 251 may be connected to the power supply wiring part 121 through the slot 230. Therefore, excessive bending of the circuit can be avoided, wiring is simplified, and assembly cost is reduced. Alternatively, the grounding portion 126 may be a metal spring, and the metal spring may rest on the heating tube bracket 210 after the heating assembly 200 is assembled. The hot water pipe 110 may also be grounded by grounding the heating pipe bracket 210. Alternatively, the ground 126 may be grounded through a ground line 252. The ground wire 252 may be connected to the ground 126 through the slot 230. The ground wire 252 is arranged in the same column as the plurality of power supply wiring parts 121, so that the slot 230 can expose the ground part 126, which also facilitates wiring.

Illustratively, the heating assembly 200 may further include a thermostat 240, the thermostat 240 being connected to the heating body bracket 210 at the slot 230. Referring to fig. 3 to 5 in combination, the thermostat 240 may include a mounting portion 241 and a detecting portion 242, and the mounting portion 241 may be fixed to the heating body bracket 210. A portion of the sensing portion 242 of the thermostat 240 is in contact with the heating tube 100 or is closely spaced from the heating tube 100. When the temperature of the heating pipe 100 is too high during dry heating or failure, the temperature controller 240 can timely control the power supply circuit of the heating pipe 100 to be disconnected, so as to prevent accidents. The temperature controller 240 is usually a standard component, and may include a temperature control switch that is turned off when reaching a preset temperature, and its volume is generally slightly larger, and the temperature controller 240 is disposed at the slot 230, so that the heating assembly 200 may be made thinner to a certain extent, and the volume of the heating faucet is prevented from being excessively large. The contact area between the temperature controller 240 and the heating body bracket 210 is smaller, so that the heat of the heating pipe 100 can be further prevented from being transferred to the heating body bracket 210 through the temperature controller 240, the energy is saved, and the external heating of the heating faucet is avoided.

Illustratively, the heating assembly 200 may further include a water inlet connector 260 and a water outlet connector 270, wherein the water inlet connector 260 may be provided with a hot water inlet connector 261 and the water outlet connector 270 may be provided with a hot water outlet connector 271. Wherein both ends of the hot water pipe 110 may be connected to the hot water inlet 261 and the hot water outlet 271, respectively. Thereby, the hot water pipe 110 is fixed between the water inlet joint 260 and the water outlet joint 270, and completes waterway connection with the water inlet joint 260 and the water outlet joint 270.

A plurality of electrical connections may be located between the water inlet connector 260 and the water outlet connector 270. Compared with the electric connection part arranged in one of the water inlet joint 260 and the water outlet joint 270, the water inlet joint 260 or the water outlet joint 270 does not need to be provided with a avoidance bit, so that the structure is simplified. In the case that the electric connection portion is covered with an insulating paste after connecting the ground wire (if any) and the power supply wire, the electric connection portion of the heating pipe 100 is not required to be inserted into the water inlet joint 260 or the water outlet joint 270, and there is no possibility of interference.

According to another aspect of the present utility model, there is provided a heating faucet, referring in combination to FIGS. 6-7, comprising a faucet body housing 310 and the heating assembly 200 described above, the heating assembly 200 being disposed within the faucet body housing 310.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front", "rear", "upper", "lower", "left", "right", "transverse", "vertical", "horizontal", and "top", "bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely for convenience of describing the present utility model and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, without limiting the scope of protection of the present utility model; the orientation terms "inner" and "outer" refer to the inner and outer relative to the outline of the components themselves.

For ease of description, regional relative terms, such as "over … …," "over … …," "on the upper surface of … …," "over," and the like, may be used herein to describe regional positional relationships of one or more components or features to other components or features shown in the figures. It will be understood that the relative terms of regions include not only the orientation of the components illustrated in the figures, but also different orientations in use or operation. For example, if the element in the figures is turned over entirely, elements "over" or "on" other elements or features would then be included in cases where the element is "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". Moreover, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and all such cases are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, components, assemblies, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The present utility model has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. In addition, it will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (15)

1. A heating pipe, characterized in that the heating pipe comprises a hot water pipe and an electric heating element for heating the hot water pipe, the electric heating element being arranged on an outer surface of the hot water pipe;

The outer surface of the hot water pipe is provided with a plurality of electric connection parts, each electric connection part comprises a plurality of power supply wiring parts used for being connected with a power supply line, each power supply wiring part is electrically connected with the electric heating element, and the plurality of power supply wiring parts are arranged in a row along the axial direction of the hot water pipe.

2. The heating tube of claim 1, wherein the electrical heating element comprises an electrically heated film formed on an outer surface of the hot water tube.

3. The heating pipe of claim 2, wherein the electrothermal film is patterned to include one or more heat-generating circuits, each of the heat-generating circuits including a first free end, a second free end, and a plurality of first and second sub-heat-generating circuits connected between the first and second free ends, wherein the plurality of first sub-heat-generating circuits extend along an axial direction of the hot water pipe, the second sub-heat-generating circuit is connected between ends of the first sub-heat-generating circuits,

The first free ends and the second free ends of the one or more heating wires are spaced apart from each other along the axial direction to form an installation gap, the plurality of power supply wiring parts are arranged in the installation gap, and the electrothermal film is electrically connected to the plurality of power supply wiring parts through the first free ends and the second free ends.

4. The heating tube of claim 3, wherein the heating wires are a plurality of, the plurality of power supply wiring sections including a first power supply wiring section and a second power supply wiring section, the number of first power supply wiring sections being less than the number of second power supply wiring sections, wherein

The first free end is electrically connected to the first power supply wiring portion; and is also provided with

The second free end is electrically connected to the second power supply wiring portion.

5. A heating pipe according to claim 3, wherein a first sub-heating wire adjacent to the plurality of power supply wiring parts in a circumferential direction around the hot water pipe is disconnected and forms a disconnected end, the disconnected end is separated and forms a dodging gap dodging the plurality of power supply wiring parts, a connecting wire electrically connecting the disconnected end is provided in the dodging gap, wherein:

The connecting line is connected to one side of the broken end, which is far away from the power supply wiring parts; and/or

The connection line is bent toward a side away from the plurality of power supply wiring parts; and/or

The connecting circuit is thinner than the first sub heating circuit.

6. The heating pipe of claim 2, wherein the hot water pipe comprises an electrically conductive pipe body and an electrically insulating layer formed on an outer surface of the electrically conductive pipe body, the electrothermal film being formed on an outer surface of the electrically insulating layer.

7. A heating pipe as claimed in claim 6, characterized in that,

A first gap is arranged between the electric insulation layer and the end part of the conductive pipe body, and the plurality of electric connection parts further comprise grounding parts which are arranged on the conductive pipe body and are positioned in the first gap; and/or

The ground portion and the plurality of power supply wiring portions are arranged in the same column.

8. The heating tube of claim 7, wherein a second gap is provided between the electrothermal film and an edge of the insulating layer.

9. The heating tube of claim 2, wherein the hot water tube is made of an electrically insulating material.

10. A heating pipe as claimed in claim 1, characterized in that,

The electric heating element surrounds the hot water pipe; and/or

The plurality of power supply wiring parts are arranged in the middle of the hot water pipe.

11. A heating assembly, the heating assembly comprising:

The heating tube of any one of claims 1-10; and

The heating pipe support, be provided with the installation cavity in the heating pipe support, the heating pipe sets up in the installation cavity, still be provided with on the heating pipe support along the fluting of axial direction extension, the fluting with the installation cavity intercommunication, the fluting exposes a plurality of power supply wiring portions.

12. The heating assembly of claim 11, further comprising:

A power supply line whose end is electrically connected to the plurality of power supply wiring parts; and/or

And the temperature controller is connected to the heating pipe bracket at the grooving position.

13. The heating assembly of claim 11, further comprising:

The water inlet connector is provided with a hot water inlet connector; and

A water outlet connector, a hot water outlet connector is arranged on the water outlet connector,

The two ends of the hot water pipe are respectively connected to the hot water inlet interface and the hot water outlet interface, and the electric connection parts are positioned between the water inlet joint and the water outlet joint.

14. The heating assembly of claim 11, wherein the slot extends through the heating tube mount in the axial direction.

15. A heating faucet comprising a faucet body housing and a heating assembly according to any one of claims 11-14, the heating assembly disposed within the faucet body housing.