Liquid medium heating device and electrical equipment with same

Abstract

The utility model provides a liquid medium heating device and electrical equipment with the heating device, the liquid medium heating device comprises a main body, an electric heating tube and a conducting strip, the main body is provided with an inlet connector, an outlet connector, a first channel and a second channel, the shell is provided with a first channel and a second channel which are isolated from each other. The first end shell is provided with an inlet connector. The second end shell is provided with an outlet connector; the electric heating tube is arranged in the second channel and comprises a tube body, a heating film arranged on the outer wall of the tube body and conductive films at least partially covering the two ends of the heating film, and the conductive films are electrically connected with the corresponding conductive sheets; the inlet connector, the first channel, the electric heating tube and the outlet connector are sequentially communicated end to end to form a complete medium flowing channel. Through the optimization design of the medium flowing channel, the medium can be gradually heated in the flowing process, meanwhile, through the two-section type channel structure, heat of the heating channel can be recycled and used for preheating the front-section channel, and the heat utilization rate is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of household electrical appliances, and in particular to a liquid medium heating device and an electrical appliance with the heating device. Background Art

[0002] Due to the high temperature of steam, a large number of household cleaning devices that use steam as a medium have appeared on the market. However, due to the high temperature of steam, more energy is required in the process of heating water, and the power of the whole machine is also larger.

[0003] The patent with publication number CN104976604B discloses a steam generator, which uses a shell of an integrally cast heating tube to directly heat the liquid medium entering the receiving chamber from the water inlet pipe. This structure has a short internal path of the main body and a small heat exchange area per unit mass of the medium, so the efficiency is low and energy consumption is seriously wasted. Moreover, since the liquid medium is heated by the shell to achieve phase change, the steam is further heated by the shell. The power adjustment of the heating tube will directly affect the phase change efficiency and steam temperature, so this type of steam generator has the problem of difficulty in accurately controlling the power. Summary of the invention

[0004] The object of the present invention is to provide a liquid medium heating device and an electrical device with a heating device, which can recover heat energy to improve heat utilization rate.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention discloses a liquid medium heating device, comprising a main body, characterized in that: it also comprises at least two electric heating tubes and a conductive sheet, and the main body has an inlet joint, an outlet joint, and a first channel and a second channel isolated from each other;

[0007] The main body has a first channel and a second channel isolated from each other, a heat transfer path is established between the first channel and the second channel, the first end shell has an inlet joint; the second end shell has an outlet joint;

[0008] The electric heating tube is arranged in the second channel, and comprises a tube body, a heating film arranged on the outer wall of the tube body, and a conductive film at least partially covering both ends of the heating film, and the conductive film is electrically connected to the corresponding conductive sheet;

[0009] The inlet joint, the first channel, the electric heating tube, and the outlet joint are connected end to end in sequence to form a complete medium flow channel.

[0010] Furthermore, the main body includes a shell, a first end shell arranged at one end of the shell, and a second end shell arranged at the other end of the shell.

[0011] Furthermore, the first channel and the second channel are both arranged on the shell, the number of the first channels is at least N, the number of the electric heating tubes is M, N≥2, M≥2;

[0012] The first end shell is provided with a first connecting structure, and the second end shell is provided with a second connecting structure; the end of the first channel and the electric heating tube on the same side is correspondingly connected to the first connecting structure, and the end of the other side of the first channel and the electric heating tube on the same side is correspondingly connected to the second connecting structure to form the medium flow channel;

[0013] If N and M are both even or odd numbers, the inlet connector and the outlet connector are both provided on the first end shell and are correspondingly connected to the first connecting structure on the side;

[0014] If N and M are odd and even numbers respectively, the inlet joint is arranged on the first end shell and communicated with the first communication structure correspondingly, and the outlet joint is arranged on the second end shell and communicated with the second communication structure correspondingly.

[0015] Further, the first communication structure includes a first inlet-side communication portion, a second inlet-side communication portion, a first inlet-side channel, and a second inlet-side channel;

[0016] The second communication structure includes a first outlet-side communication portion, a second outlet-side communication portion, a first outlet-side channel and a second outlet-side channel;

[0017] There are two first inlet-side communication parts and two first outlet-side communication parts, and there are three second inlet-side communication parts and two outlet-side communication parts;

[0018] One of the first inlet-side connecting parts is connected to the inlet joint, another of the first inlet-side connecting parts is connected to one of the second inlet-side connecting parts through the first inlet-side channel, and the other two of the second inlet-side connecting parts are connected through the second inlet-side channel;

[0019] One of the second outlet-side communicating parts is connected to the outlet joint, and the other two second outlet-side communicating parts are connected through the second outlet-side channel; and the two first outlet-side communicating parts are connected through the first outlet-side channel.

[0020] Furthermore, the shell is a metal shell.

[0021] Furthermore, the first inlet-side channel and the second inlet-side channel are both structures extending away from the shell and ending with a first opening, and the first outlet-side channel is both structures extending away from the shell and ending with a second opening;

[0022] The first opening is provided with a first sealing plug, and the second opening is provided with a second sealing plug.

[0023] Furthermore, it also includes an inlet-side end cover and an outlet-side end cover;

[0024] The inlet side end cover is arranged at an end of the first end shell away from the housing and forms a limit for the first sealing plug;

[0025] The outlet side end cover is arranged at an end of the second end shell away from the shell body and forms a limit for the second sealing plug.

[0026] Furthermore, one of the conductive sheets includes a first conductive sheet and a second conductive sheet, wherein the first conductive sheet is electrically connected to a conductive film on a portion of the electric heating tubes close to the start of the medium flow direction, and the second conductive sheet is electrically connected to the conductive films on the remaining electric heating tubes.

[0027] Furthermore, it also includes a first temperature sensor and a second temperature sensor, the first temperature sensor detects the inlet temperature, and the second temperature sensor detects the outlet temperature.

[0028] Further, the first end shell is provided with a first mounting seat connected to the inlet joint, the second end shell is provided with a second mounting seat connected to the outlet joint, the first temperature sensor is installed in the first mounting seat, and the second temperature sensor is installed in the second mounting seat.

[0029] The present invention also provides an electrical device with a heating device, wherein the heating device is the above-mentioned liquid medium heating device.

[0030] Furthermore, the electrical equipment is a coffee machine, an electric water heater, a water dispenser, an integrated stove, an electric iron, an electric steamer, a steam mop, a floor scrubber, a dishwasher, a washing machine, a steam cleaner, a steam sterilizer, an egg steamer, and a hanging iron.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1) The present invention optimizes the design of the medium flow channel so that the medium can be gradually heated during the flow process. At the same time, the heat of the heating channel can be recovered and used for preheating the front channel through the "two-stage" channel structure, thereby improving the heat utilization rate and realizing the miniaturization of the heating device, thereby meeting the requirements of instant heating appliances and small household appliances.

[0033] 2) The present invention controls a plurality of heating tubes in groups. When applied to steam production, segmented control can be performed according to the working pressure of the liquid-gas phase change section and the steam heating section, which helps to reduce the pressure of the steam section and facilitates the adjustment and control of the overall power.

[0034] 3) The present invention adopts an axial split structure, which is easy to manufacture and assemble.

[0035] 4) The present invention provides temperature sensors at the water inlet and steam outlet to obtain the medium temperature at the inlet and outlet, thereby facilitating accurate power control according to the temperature difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural stereogram of the liquid medium heating device in the present invention;

[0037] Figure 2 for Figure 1 A front view of the structure of the liquid medium heating device shown;

[0038] Figure 3 for Figure 2 A structural cross-sectional view taken along the AA axis (in the figure, a solid arrow indicates the flow direction of the medium in the unillustrated channel, and a hollow arrow indicates the flow direction of the medium in the illustrated channel);

[0039] Figure 4 for Figure 3 Structural cross-section view along the BB direction;

[0040] Figure 5 for Figure 3 Structural cross-section view in CC direction;

[0041] Figure 6 for Figure 1 An exploded view of a first structure of the liquid medium heating device shown;

[0042] Figure 7 for Figure 1 A second structural exploded view of the liquid medium heating device shown;

[0043] Figure 8 To adopt Figure 1 A schematic diagram of the structure of an automatic coffee machine with a liquid medium heating device shown (the solid line portion represents the outline of the liquid medium heating device, and the dotted line portion represents the outline of the machine);

[0044] Fig. 9 To adopt Figure 1 A schematic diagram of the structure of a capsule coffee machine with a liquid medium heating device (the solid line portion represents the outline of the liquid medium heating device, and the dotted line portion represents the outline of the machine);

[0045] Fig.10 To adopt Figure 1 A schematic diagram of the structure of an electric water heater of a liquid medium heating device shown (the solid line portion represents the outline of the liquid medium heating device, and the dotted line portion represents the outline of the machine);

[0046] Fig.11 To adopt Figure 1A schematic diagram of the structure of a water dispenser with a liquid medium heating device shown (the solid line portion represents the outline of the liquid medium heating device, and the dotted line portion represents the outline of the machine);

[0047] Fig.12 To adopt Figure 1 A schematic diagram of the structure of an integrated stove with a liquid medium heating device shown (the solid line portion represents the outline of the liquid medium heating device, and the dotted line portion represents the outline of the machine);

[0048] Fig.13 To adopt Figure 1 A schematic diagram of the structure of an electric iron with a liquid medium heating device shown (the solid line portion represents the outline of the liquid medium heating device, and the dotted line portion represents the outline of the machine);

[0049] Fig.14 To adopt Figure 1 A schematic diagram of the structure of the electric steamer of the liquid medium heating device shown (the solid line portion represents the outline of the liquid medium heating device, and the dotted line portion represents the outline of the machine);

[0050] Fig.15 To adopt Figure 1 A schematic diagram of the structure of a steam mop with a liquid medium heating device shown (the solid line portion represents the outline of the liquid medium heating device, and the dotted line portion represents the outline of the machine);

[0051] Fig.16 To adopt Figure 1 A schematic diagram of the structure of a floor scrubber with a liquid medium heating device (the solid line portion represents the outline of the liquid medium heating device, and the dotted line portion represents the outline of the machine);

[0052] Fig.17 To adopt Figure 1 A schematic diagram of the structure of a dishwasher with a liquid medium heating device shown (the solid line portion represents the outline of the liquid medium heating device, and the dotted line portion represents the outline of the machine);

[0053] Fig.18 To adopt Figure 1 A schematic diagram of the structure of a washing machine with a liquid medium heating device shown (the solid line portion represents the outline of the liquid medium heating device, and the dotted line portion represents the outline of the machine);

[0054] Fig.19 To adopt Figure 1 A schematic diagram of the structure of a steam cleaning machine with a liquid medium heating device (the solid line portion represents the outline of the liquid medium heating device, and the dotted line portion represents the outline of the machine);

[0055] Fig. 20 To adopt Figure 1 A schematic diagram of the structure of a steam sterilizer with a liquid medium heating device shown (the solid line portion represents the outline of the liquid medium heating device, and the dotted line portion represents the outline of the machine);

[0056] Fig.21 To adopt Figure 1 A schematic diagram of the structure of an egg steamer with a liquid medium heating device (the solid line portion represents the outline of the liquid medium heating device, and the dotted line portion represents the outline of the machine);

[0057] Fig. 22 To adopt Figure 1 The structural schematic diagram of a garment steamer with a liquid medium heating device is shown (the solid line portion represents the outline of the liquid medium heating device, and the dotted line portion represents the outline of the machine). DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] like Figures 1 to 7 As shown, this embodiment discloses a liquid medium heating device, including a main body, three electric heating tubes 16 and a conductive sheet 11. The main body includes a shell 1, a first end shell 3 arranged at one end of the shell 1 and a second end shell 4 arranged at the other end of the shell 1.

[0060] The housing 1 is a metal structure, so it can conduct heat. The housing 1 is preferably an aluminum or stainless steel structure. The housing 1 is processed to form a first channel 1.1 and a second channel 1.2 that are parallel and isolated from each other. The number of the first channels 1.1 is two, and the number of the second channels 1.2 is three. The plane where the axes of the two first channels 1.1 are located is parallel to the plane where the axes of the three second channels 1.2 are located.

[0061] The electric heating tubes 16 are respectively arranged in the second channels 1.2, and include a tube body, a heating film arranged on the outer wall of the tube body, and a conductive film at least partially covering both ends of the heating film. Two groups of conductive sheets 11 are provided, and the conductive films are electrically connected to the corresponding conductive sheets 11. The tube body is a quartz tube, the heating film is a FTO film material, and the conductive film is a silver mesh film.

[0062] like Figure 6 and 7As shown, the first end shell 3 is a heat-resistant plastic structure. The function of the first end shell 3 is to realize the connection between the electric heating pipe 16 and the first channel 1.1 at the end. Therefore, it is formed with an inlet joint 3.1 and a first connecting structure through an injection molding process. The first connecting structure specifically includes a first inlet side connecting portion 3.2, a second inlet side connecting portion 3.6, a first inlet side channel 3.3 and a second inlet side channel 3.4. Among them, the inlet joint 3.1, the first inlet side connecting portion 3.2, and the second inlet side connecting portion 3.6 all pass through the end surface of the first end shell 3. The inlet joint 3.1 is connected to the equipment pipeline to input liquid medium into the heating device. The first inlet side channel 3.3 and the second inlet side channel 3.4 are arranged on one side end surface of the first end shell 3 facing the shell 1. One of the first inlet side connecting portions 3.2 is connected to the inlet joint 3.1, and the other first inlet side connecting portion 3.2 is connected to one of the second inlet side connecting portions 3.6 through the first inlet side channel 3.3, and the other two second inlet side connecting portions 3.6 are connected through the second inlet side channel 3.4.

[0063] Similar to the first end shell 3, the second end shell 4 is a heat-resistant plastic structure, which is formed with an outlet joint 4.1 and a second connecting structure by an injection molding process. The second connecting structure includes a first outlet side connecting portion 4.2, a second outlet side connecting portion 4.6, a first outlet side channel 4.3 and a second outlet side channel 4.4. Among them, the outlet joint 4.1, the first outlet side connecting portion 4.2 and the second outlet side connecting portion 4.6 all pass through the end surface of the second end shell 4. The outlet joint 4.1 is connected to the equipment pipeline and is used to output high-temperature gaseous medium or high-temperature liquid medium. The first outlet side channel 4.3 and the second outlet side channel 4.4 are arranged on one side end surface of the second end shell 4 facing the shell 1. One of the second outlet side connecting portions 4.6 is connected to the outlet joint 4.1, and the other two second outlet side connecting portions 4.6 are connected through the second outlet side channel 4.4. The two first outlet side connecting portions 4.2 are connected through the first outlet side channel 4.3.

[0064] Obviously, the first inlet-side connecting portion 3.2, the first outlet-side connecting portion 4.2 and the first channel 1.1 are provided in equal numbers. The first inlet-side connecting portion 3.2 is sealed and connected to the inlet-side end of the corresponding first channel 1.1 through the first seal 10, and the first outlet-side connecting portion 4.2 is sealed and connected to the outlet-side end of the corresponding first channel 1.1 through the first seal 10. The second inlet-side connecting portion 3.6, the second outlet-side connecting portion 4.6 and the electric heating pipe 16 are provided in equal numbers. The second inlet-side connecting portion 3.6 is sealed and connected to the inlet-side end of the corresponding electric heating pipe 16 through the second seal 9. The second outlet-side connecting portion 4.6 is sealed and connected to the outlet-side end of the corresponding electric heating pipe 16 through the second seal 9. The connecting portion is connected in the form of a through hole or a tube body according to design requirements.

[0065] Through the above connection method, a complete medium flow channel is formed, and the flow path of the medium is: inlet joint 3.1, first channel 1.1, first outlet side channel 4.3, first channel 1.1, first inlet side channel 3.3, electric heating pipe 16, second outlet side channel 4.4, electric heating pipe 16, second inlet side channel 3.4, outlet joint 4.1. Obviously, the liquid medium is heated in the electric heating pipe 16, and the heat generated by the electric heating pipe 16 will be dissipated into the second channel 1.2. Since the shell 1 is made of metal, the heat will be further conducted to the first channel 1.1, thereby realizing heat recovery for the waste heat of the medium that has not entered the electric heating pipe 16, and improving the heat utilization rate.

[0066] The state of the outlet medium of the outlet connector 4.1 is determined according to different usage scenarios. For example, in some scenarios, the liquid medium heating device only provides a liquid medium with a certain temperature, and the medium does not need to undergo a phase change. In other scenarios, the liquid medium heating device provides a gaseous medium with a certain temperature, and the medium needs to undergo a phase change to transform into a gaseous state.

[0067] For the insulation installation of the conductive sheet 11, the liquid medium heating device further includes two groups of conductive sheet fixing seats 2. One of the conductive sheet fixing seats 2 is installed between the body 1 and the first end shell 3, and the other conductive sheet fixing seat 2 is installed between the body 1 and the second end shell 4. The two groups of conductive sheets 11 are respectively installed in the corresponding conductive sheet fixing seats 2. The conductive sheet fixing seats 2 have avoidance holes to meet the communication connection of the corresponding components or structures.

[0068] like Figure 6 and 7 As shown, the first inlet side channel 3.3 and the second inlet side channel 3.4 are both structures extending away from the shell and ending with the first opening, and the first outlet side channel 4.3 is both a structure extending away from the shell and ending with the second opening. The first opening is provided with a first sealing plug 7, and the second opening is provided with a second sealing plug 8.

[0069] In order to firmly fix the sealing plug to prevent it from expanding under the action of internal pressure, the liquid medium heating device also includes an inlet side end cover 5 and an outlet side end cover 6. The inlet side end cover 5 is arranged at the end of the first end shell 3 away from the shell 1 and forms a limit for the first sealing plug 7, and it has an inlet joint avoidance hole 5.1. The outlet side end cover 6 is arranged at the end of the second end shell 4 away from the shell 1 and forms a limit for the second sealing plug 8, and it has an outlet joint avoidance hole 6.1. Obviously, the liquid medium heating device is assembled in the axial direction according to the inlet side end cover 5, the first end shell 3, the conductive sheet fixing seat 2, the shell 1, the conductive sheet fixing seat 2, the second end shell 4, and the outlet side end cover 6. The fixing method is to use four long screws 15 from both ends to fix the above components in sequence.

[0070] In the scenario of providing steam, the working pressure of the electric heating tube 16 is different according to the stage. The working pressure in the liquid heating stage is low, while the working pressure in the gas heating stage is high. In this example, there are three electric heating tubes 16, and the rated power of a single tube is set to 500W according to actual conditions. One of the electric heating tubes 16 is used to heat the liquid medium to produce a phase change, that is, to produce steam. The other two electric heating tubes 16 are used to heat steam. Since the phase change temperature is much lower than the temperature of the outlet steam, the pressure of the two electric heating tubes 16 at the end of the path is relatively large, and a larger control margin needs to be reserved, while the pressure of one electric heating tube 16 at the beginning of the path is relatively small, and a smaller control margin needs to be reserved. In order to better control the power, the aforementioned two electric heating tubes 16 and the other electric heating tube 16 are independently controlled. That is, one of the conductive sheets 11 is an integral structure and is connected to the ends of the three electric heating tubes 16, while the other conductive sheet 11 is a split structure, including a first conductive sheet 11.1 and a second conductive sheet 11.2. The first conductive sheet 11.1 is electrically connected to a conductive film on an electric heating tube 16 near the beginning of the medium flow direction, and the second conductive sheet 11.2 is electrically connected to the conductive films on two electric heating tubes 16 near the end of the medium flow direction. In this way, the three electric heating tubes 16 are controlled separately by two power supply circuits, which helps to improve the life of the electric heating tubes 16. It can be known that when the number of electric heating tubes 16 is two, four or more, the number of electric heating tubes 16 should also be allocated according to the heating conditions of the medium to achieve the purpose of segmented control, that is, the heating and phase change stage is controlled separately, and the heating gaseous medium stage is controlled separately.

[0071] In order to control the power more accurately, the liquid medium heating device further includes a first temperature sensor 12 and a second temperature sensor 13. The first temperature sensor 12 detects the inlet temperature, and the second temperature sensor 13 detects the outlet temperature. Compared with the method of controlling the power by only detecting the outlet temperature, this example can better determine the heating power and reduce energy consumption by the difference between the two temperatures.

[0072] The temperature sensor is fixed in the following manner: the first end shell 3 is provided with a first mounting seat 3.5 connected to the inlet joint 3.1, the second end shell 4 is provided with a second mounting seat 4.5 connected to the outlet joint 4.1, the first temperature sensor 12 is installed in the first mounting seat 3.5, and the second temperature sensor 13 is installed in the second mounting seat 4.5. The probe of the first temperature sensor 12 is inserted into the inlet joint 3.1 to obtain the inlet temperature data, and the probe of the second temperature sensor 13 is inserted into the outlet joint 4.1 to obtain the outlet temperature data. The temperature sensor is sealed and installed in the mounting seat through a sealing ring 14.

[0073] As an alternative, the number of the first channel 1.1 and the electric heating tube 16 can also be other combinations, such as two, three, or three for the former and two for the latter. It should be noted that when the number of the first channel 1.1 and the electric heating tube 16 are both odd numbers or even numbers, the inlet connector 3.1 and the outlet connector 4.1 are both arranged on the end shell on the same side, otherwise, they are arranged separately as described above. It can be known that according to the number of the two, the first connecting structure and the second connecting structure will also be adjusted accordingly, but the purpose is still to realize the series connection of the medium flow channel. Based on this concept, those skilled in the art can deduce and know the form and number of the corresponding structures of the first connecting structure and the second connecting structure, and the structure should be regarded as implicitly disclosed, so it will not be repeated.

[0074] The present invention also discloses an electrical device with the above-mentioned liquid medium heating device, in which the liquid medium is transported to the liquid medium heating device through a pipeline system with a pump, and is heated to the working temperature under the heating of the electric heating tube 16. Since this patent does not improve the components and structures of other electrical devices except the heating device, they are not described in detail.

[0075] As a preferred example, Figure 8 As shown, the electrical device is an automatic coffee machine, the inlet medium of the liquid medium heating device is low-temperature or normal-temperature drinking water, and the outlet medium is drinking water or steam reaching a preset temperature. The liquid medium heating device heats the medium and changes the state of the medium according to the working mode.

[0076] As a preferred example, Fig. 9 As shown, the electrical device is a capsule coffee machine, the inlet medium of the liquid medium heating device is low-temperature or room-temperature drinking water, and the outlet medium is drinking water reaching a preset temperature. The liquid medium heating device heats the medium but does not change the state of the medium.

[0077] As a preferred example, Fig.10 As shown, the electrical device is an electric water heater, the inlet medium of the liquid medium heating device is low-temperature or normal-temperature tap water, and the outlet medium is tap water reaching a preset temperature. The liquid medium heating device heats the medium but does not change the state of the medium.

[0078] As a preferred example, Fig.11 As shown, the electrical device is a water dispenser, the inlet medium of the liquid medium heating device is low-temperature or normal-temperature drinking water, and the outlet medium is drinking water reaching a preset temperature. The liquid medium heating device heats the medium but does not change the state of the medium.

[0079] As a preferred example, Fig.12As shown, the electrical device is an integrated stove, the inlet medium of the liquid medium heating device is low-temperature or normal-temperature tap water, and the outlet medium is steam reaching a preset temperature. The liquid medium heating device heats the medium and changes the state of the medium.

[0080] As a preferred example, Fig.13 As shown, the electrical device is an electric iron, the inlet medium of the liquid medium heating device is low-temperature or normal-temperature tap water, and the outlet medium is steam reaching a preset temperature. The liquid medium heating device heats the medium and changes the state of the medium.

[0081] As a preferred example, Fig.14 As shown, the electrical device is an electric steamer, the inlet medium of the liquid medium heating device is low-temperature or normal-temperature tap water, and the outlet medium is steam reaching a preset temperature. The liquid medium heating device heats the medium and changes the state of the medium.

[0082] As a preferred example, Fig.15 As shown, the electrical device is a steam mop, the inlet medium of the liquid medium heating device is low-temperature or normal-temperature tap water, and the outlet medium is steam reaching a preset temperature. The liquid medium heating device heats the medium and changes the state of the medium.

[0083] As a preferred example, Fig.16 As shown, the electrical equipment is a floor scrubber, the inlet medium of the liquid medium heating device is low-temperature or normal-temperature tap water, and the outlet medium is steam reaching a preset temperature. The liquid medium heating device heats the medium and changes the state of the medium.

[0084] As a preferred example, Fig.17 As shown, the electrical device is a dishwasher, the inlet medium of the liquid medium heating device is low-temperature or normal-temperature tap water, and the outlet medium is tap water or steam reaching a preset temperature. The liquid medium heating device heats the medium and changes the state of the medium according to the working mode.

[0085] As a preferred example, Fig.18 As shown, the electrical device is a washing machine, the inlet medium of the liquid medium heating device is low-temperature or normal-temperature tap water, and the outlet medium is tap water or steam reaching a preset temperature. The liquid medium heating device heats the medium and changes the state of the medium according to the working mode.

[0086] As a preferred example, Fig.19 As shown, the electrical device is a steam cleaner, the inlet medium of the liquid medium heating device is low-temperature or normal-temperature tap water, and the outlet medium is tap water or steam reaching a preset temperature. The liquid medium heating device heats the medium and changes the state of the medium according to the working mode.

[0087] As a preferred example, Fig. 20As shown, the electrical equipment is a steam sterilizer, the inlet medium of the liquid medium heating device is low-temperature or normal-temperature tap water, and the outlet medium is steam reaching a preset temperature. The liquid medium heating device heats the medium and changes the state of the medium.

[0088] As a preferred example, Fig.21 As shown, the electrical device is an egg steamer, the inlet medium of the liquid medium heating device is low-temperature or room-temperature tap water, and the outlet medium is steam reaching a preset temperature. The liquid medium heating device heats the medium and changes the state of the medium.

[0089] As a preferred example, Fig. 22 As shown, the electrical device is a garment steamer, the inlet medium of the liquid medium heating device is low-temperature or normal-temperature tap water, and the outlet medium is steam reaching a preset temperature. The liquid medium heating device heats the medium and changes the state of the medium.

[0090] It should be noted that the control part in the present invention is prior art, so it will not be described in detail.

[0091] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0092] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation of the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0093] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0094] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A liquid medium heating device, comprising a main body, characterized in that: It also comprises at least two electric heating tubes (16) and a conductive sheet (11), wherein the main body comprises an inlet joint (3.1), an outlet joint (4.1), and a first channel (1.1) and a second channel (1.2) that are isolated from each other; The main body comprises a first channel (1.1) and a second channel (1.2) which are isolated from each other, a heat transfer path is established between the first channel (1.1) and the second channel (1.2), the first end shell (3) of the main body comprises an inlet joint (3.1), and the second end shell (4) thereof comprises an outlet joint (4.1); The electric heating tube (16) is arranged in the second channel (1.2), and comprises a tube body, a heating film arranged on the outer wall of the tube body, and a conductive film at least partially covering both ends of the heating film, wherein the conductive film is electrically connected to a corresponding conductive sheet (11); The inlet joint (3.1), the first channel (1.1), the electric heating pipe (16), and the outlet joint (4.1) are connected end to end in sequence to form a complete medium flow channel.

2. A liquid medium heating device according to claim 1, characterized in that: The main body comprises a shell (1), a first end shell (3) arranged at one end of the shell (1), and a second end shell (4) arranged at the other end of the shell (1).

3. A liquid medium heating device according to claim 2, characterized in that: The first channel (1.1) and the second channel (1.2) are both arranged on the housing (1), the number of the first channels (1.1) is at least N, the number of the electric heating tubes (16) is M, N≥2, M≥2; The first end shell (3) is provided with a first connecting structure, and the second end shell (4) is provided with a second connecting structure; the end of the first channel (1.1) and the electric heating pipe (16) on the same side is correspondingly connected to the first connecting structure, and the end of the other side of the first channel (1.1) and the electric heating pipe (16) is correspondingly connected to the second connecting structure, thereby forming the medium flow channel; If N and M are both even numbers or odd numbers, the inlet joint (3.1) and the outlet joint (4.1) are both arranged on the first end shell (3) and are correspondingly connected to the first connecting structure on this side; If N and M are odd and even numbers respectively, the inlet joint (3.1) is arranged on the first end shell (3) and is correspondingly connected to the first connecting structure, and the outlet joint (4.1) is arranged on the second end shell (4) and is correspondingly connected to the second connecting structure.

4. A liquid medium heating device according to claim 3, characterized in that: The first communication structure comprises a first inlet-side communication portion (3.2), a second inlet-side communication portion (3.6), a first inlet-side channel (3.3) and a second inlet-side channel (3.4); The second communication structure comprises a first outlet side communication portion (4.2), a second outlet side communication portion (4.6), a first outlet side channel (4.3) and a second outlet side channel (4.4); The number of the first inlet-side connecting portion (3.2) and the number of the first outlet-side connecting portion (4.2) are both two, and the number of the second inlet-side connecting portion (3.6) and the number of the second outlet-side connecting portion (4.6) are both three; One of the first inlet-side connecting parts (3.2) is connected to the inlet joint (3.1), another of the first inlet-side connecting parts (3.2) is connected to one of the second inlet-side connecting parts (3.6) via the first inlet-side channel (3.3), and the other two of the second inlet-side connecting parts (3.6) are connected via the second inlet-side channel (3.4); One of the second outlet side connecting parts (4.6) is connected to the outlet joint (4.1), and the other two second outlet side connecting parts (4.6) are connected via the second outlet side channel (4.4); and the two first outlet side connecting parts (4.2) are connected via the first outlet side channel (4.3).

5. A liquid medium heating device according to claim 4, characterized in that: The first inlet side channel (3.3) and the second inlet side channel (3.4) are both structures extending in a direction away from the shell and ending with a first opening, and the first outlet side channel (4.3) is both a structure extending in a direction away from the shell and ending with a second opening; The first opening is provided with a first sealing plug (7), and the second opening is provided with a second sealing plug (8).

6. A liquid medium heating device according to claim 5, characterized in that: It also includes an inlet side end cover (5) and an outlet side end cover (6); The inlet-side end cover (5) is arranged at an end of the first end shell (3) away from the housing (1) and forms a limit for the first sealing plug (7); The outlet-side end cover (6) is arranged at an end of the second end shell (4) away from the housing (1) and forms a limit for the second sealing plug (8).

7. The liquid medium heating device according to claim 5, characterized in that: One of the conductive sheets (11) comprises a first conductive sheet (11.1) and a second conductive sheet (11.2), wherein the first conductive sheet (11.1) is electrically connected to a conductive film on a portion of the electric heating tubes (16) close to the start of the medium flow direction, and the second conductive sheet (11.2) is electrically connected to the conductive films on the remaining electric heating tubes (16).

8. A liquid medium heating device according to any one of claims 1 to 7, characterized in that: It also includes a first temperature sensor (12) and a second temperature sensor (13), wherein the first temperature sensor (12) detects the inlet temperature and the second temperature sensor (13) detects the outlet temperature.

9. A liquid medium heating device according to claim 8, characterized in that: The first end shell (3) is provided with a first mounting seat (3.5) connected to the inlet joint (3.1), the second end shell (4) is provided with a second mounting seat (4.5) connected to the outlet joint (4.1), the first temperature sensor (12) is mounted in the first mounting seat (3.5), and the second temperature sensor (13) is mounted in the second mounting seat (4.5).

10. An electrical device with a heating device, characterized in that: The heating device is a liquid medium heating device as described in claim 1.

11. The electrical device with a heating device according to claim 10, characterized in that: The electrical appliance is a coffee machine, an electric water heater, a water dispenser, an integrated stove, an electric iron, an electric steamer, a steam mop, a floor scrubber, a dishwasher, a washing machine, a steam cleaner, a steam sterilizer, an egg steamer or a hanging iron.

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