An electric heating steam and hot water generator

Abstract

The present invention discloses an electrothermal steam and hot water generator, which comprises a cabinet body and at least one electric heating unit. The electric heating unit includes a cylinder barrel and a quartz electric heating tube. The quartz electric heating tube is inserted into the cylinder barrel from the installation opening of the cylinder barrel. The quartz electric heating tube includes a quartz base tube, a pipe orifice sealing and supporting assembly, and two lead-out wires. An electrothermal film layer and two electrodes are provided on the inner surface of the quartz base tube. The pipe orifice sealing and supporting assembly is installed at the pipe orifice of the quartz base tube. The inner ends of the two lead-out wires are respectively welded at the positions where the outer ends of the electrodes are located by soldering. A screw sleeve is sleeved at the pipe orifice of the quartz base tube, and a sealing sleeve is press-fitted between the screw sleeve and the outer wall of the quartz base tube. The quartz base tube is inserted into the cylinder barrel from the installation opening. A flange is provided at the outer end of the screw sleeve, and a sealing gasket is pressed between the flange and the end face of the installation opening. The present invention can freely switch between generating hot water and steam, and can operate stably when generating steam.

Description

Technical Field

[0001] The present invention relates to an electrothermal steam and hot water generator. Background Art

[0002] Hot water generators can be used for heating, cleaning, disinfection, etc., and have been widely used in related industries. In terms of structure, generators can generally be divided into two categories: one is the boiler-type generator, which generally has a relatively large water-containing and water-boiling space, such as the bottom heating plate of a steam boiler or a steamer; the other is the flow-channel type generator, which is characterized by having a flow channel built therein for superheating steam or hot water. This type of generator can generate steam with different degrees of superheat and has been widely used in steam cooking products, such as coffee machines, some clothes steamers or steam cleaners, etc.

[0003] The flow-channel type hot water generator usually installs a plurality of electric heating units in its cabinet. Each electric heating unit is provided with a heating flow channel. The heating flow channels of the plurality of electric heating units are connected in series in sequence, and after being connected in series, they are connected to the water inlet pipe and the water outlet pipe in the cabinet. The electric heating unit includes a cylinder and an electric heating pipe. One end of the cylinder is closed, and the other end is an installation port. The electric heating pipe is inserted into the cylinder from the installation port, and the electric heating pipe extends into the cylinder, and the water flow is heated by the electric heating pipe.

[0004] However, the existing hot water generators cannot be used to generate steam at the same time, and the reasons are as follows:

[0005] 1. The insertion structure of the electric heating pipe of the existing electric heating unit is: a rubber plug is sleeved at the end of the electric heating pipe, and the rubber plug is squeezed between the end of the electric heating pipe and the installation port of the cylinder, so as to fix the electric heating pipe and achieve a sealing effect. The above-mentioned electric heating unit does not have any problems when used to heat hot water. However, if it is used to generate steam, due to the pressure and vaporized moisture, it cannot achieve complete sealing and leakage will occur.

[0006] 2. Such as Figure 16 and Figure 17Shown is a conventional quartz electric heating tube used in the above-mentioned flow-through hot water generator, which includes a quartz base tube 1.1, a nozzle sealing and supporting assembly 2, and two lead wires 1.3. An electric heating film layer 1.2 and two electrodes 1.4 respectively connected to the electric heating film layer 1.2 are provided on the inner surface of the quartz base tube 1.1. The two electrodes 1.4 are respectively located on opposite sides, and the outer ends of the electrodes 1.4 extend to the nozzle of the quartz base tube 1.1. The nozzle sealing and supporting assembly 2 is installed at the nozzle of the quartz base tube 1.1. The nozzle sealing and supporting assembly 2 supports the nozzle outward and forms a seal at the same time. The inner ends of the two lead wires 1.3 are respectively pressed against the inner surface of the quartz base tube 1.1 through the nozzle sealing and supporting assembly 2 and are in close contact with the outer ends of the two electrodes 1.4 respectively. The outer ends of the two lead wires 1.3 are used to connect to a power supply. The electric heating film layer 1.2 has a certain power density, and the electric heating film layer 1.2 will generate heat after the quartz electric heating tube 1.1 is powered on. However, the inventor found that during use, the volume of the nozzle sealing and supporting assembly 2 will expand after being heated, and when water flows through, the temperature of the nozzle sealing and supporting assembly 2 will drop and it will contract, and then the quartz electric heating tube will generate heat again to replenish the heat. Under the action of sudden heating and cooling, since the inner ends of the lead wires 1.3 are fixed by clamping, the connection between the lead wires 1.3 and the electrodes 1.4 will become loose, resulting in poor contact and heat generation at the connection, and finally the electrodes will be burned out by ignition and unable to work, and even penetrate through the wall of the quartz base tube to carbonize the sealing assembly outside the quartz base tube at the position corresponding to the outer ends of the electrodes at high temperature, resulting in the loss of sealing performance. If the above-mentioned quartz electric heating tube is used to generate steam, the degree of sudden heating and cooling will be more intense, and the above-mentioned problems will be more serious, seriously affecting the use of the product.

[0007] In addition, existing electric heating units are all fixed and installed one by one through bolt kits. Generally, at least two bolt kits are required for each electric heating unit for fixation, and the operation in the cabinet is relatively troublesome. Therefore, the installation and disassembly of existing electric heating units are relatively cumbersome and require a large amount of manpower. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide an electric heating steam and hot water generator that can freely switch between generating hot water and steam and can operate stably when generating steam.

[0009] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0010] An electric heating steam and hot water generator, which comprises a cabinet body and at least one electric heating unit. The electric heating unit includes a cylinder barrel and a quartz electric heating tube. One end of the cylinder barrel is closed, and the other end is provided with an installation opening. The quartz electric heating tube is inserted into the cylinder barrel from the installation opening. The two ends of the cylinder barrel are respectively provided with an inlet and an outlet communicating with its interior. The quartz electric heating tube includes a quartz base tube, a pipe orifice sealing and supporting assembly, and two lead-out wires. An electric heating film layer and two electrodes respectively connected to the electric heating film layer are provided on the inner surface of the quartz base tube. The two electrodes are respectively located on opposite sides. The pipe orifice sealing and supporting assembly is installed at the pipe orifice of the quartz base tube. The pipe orifice sealing and supporting assembly supports the pipe orifice outward and forms a seal at the same time. It is characterized in that: the outer ends of the electrodes extend to the outside of the pipe orifice sealing and supporting assembly, and the inner ends of the two lead-out wires are respectively welded at the positions where the outer ends of the electrodes are located through soldering; a screw sleeve is sleeved at the pipe orifice of the quartz base tube, and a sealing sleeve is press-fitted between the screw sleeve and the outer wall of the quartz base tube. The seal between the screw sleeve and the quartz base tube is achieved through the sealing sleeve. The quartz base tube is inserted into the cylinder barrel from the installation opening, and the screw sleeve is threadedly connected with the installation opening. A flange is provided at the outer end of the screw sleeve, and a sealing washer is pressed between the flange and the end face of the installation opening. The seal between the screw sleeve and the cylinder barrel is achieved through the sealing washer.

[0011] Further, the electric heating steam and hot water generator includes at least one electric heating module. The electric heating module includes at least one hanging plate. The electric heating unit is fixedly installed on the hanging plate. A hanging rack is provided in the cabinet body. The hanging plate and the hanging rack are provided with mutually matching detachable hanging and connecting structures, so that the electric heating module can be directly hung on the hanging rack through the hanging plate.

[0012] Further, a pressing sleeve is sleeved on the outside of the quartz base tube, and the position of the pressing sleeve corresponds to the position of the pipe orifice sealing and supporting assembly.

[0013] An implementation structure of the pipe orifice sealing and supporting assembly is: the pipe orifice sealing and supporting assembly includes two inner lining ceramic sheets, a locking bolt and an annular inner lining sleeve. The inner lining sleeve is clamped between the two inner lining ceramic sheets. The two inner lining ceramic sheets are connected through the locking bolt. First conical surfaces are respectively provided on the inner sides of the two ends of the inner lining sleeve, and second conical surfaces are correspondingly provided on the side edges of the inner lining ceramic sheets. The second conical surfaces are in abutment with the first conical surfaces, and the outer surface of the inner lining sleeve is in fit with the inner wall of the quartz base tube.

[0014] An implementation structure of the detachable hanging and connecting structure is: the detachable hanging and connecting structure includes a hook provided on the hanging plate and a hanging hole correspondingly provided on the hanging rack. The hook can be cooperatively hooked in the hanging hole.

[0015] An implementation structure of the hanging rack is: the hanging rack includes a plurality of strip plates arranged side by side horizontally. The hanging holes are provided on the strip plates. Hooks are respectively provided on the two side edges of the hanging plate. When the electric heating module is hung on the hanging rack, the electric heating module is located between two adjacent strip plates.

[0016] Further, vertical hanging plates are respectively arranged on both sides of the electric heating module, and two upper and lower hooks are respectively arranged on the hanging plates.

[0017] Further, an insulating cover is provided at the pipe orifice of the quartz-based tube.

[0018] Among them, the electric heating steam and hot water generator further includes an electric control cabinet, and the electric control cabinet is integrally arranged with the cabinet body.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, the outer ends of the electrodes extend to the outside of the pipe orifice sealing support assembly, and the inner ends of the lead-out wires are fixedly connected by soldering with solder. No matter whether the quartz-based tube expands or contracts thermally, the inner ends of the lead-out wires will be firmly connected to the outer ends of the electrodes. In the case of sudden heating and cooling, loosening, heating, arcing at the connection can be avoided, and even the phenomenon of burning out the electrodes can be avoided. Especially when used for generating steam, stable connection can also be achieved.

[0021] In the present invention, the electric heating unit is fixedly connected to the quartz electric heating tube by means of a screw sleeve in a threaded connection manner, and the seal between the screw sleeve and the electric heating tube is realized through a sealing sleeve, and the seal between the screw sleeve and the cylinder barrel is realized through a sealing washer, and the sealing performance is better. When used for generating steam, leakage will not occur.

[0022] The above characteristics of the present invention enable it to stably generate steam, that is, it can freely switch between generating hot water and steam, and can operate stably when generating steam.

[0023] 2. In the present invention, the electric heating unit is also fixedly installed on the hanging plate as an electric heating module, realizing modularization. Detachable hanging connection structures that cooperate with each other are arranged on the hanging plate and the hanging rack, and the electric heating module is directly hung on the hanging rack through the hanging plate. In this way, both the installation and disassembly of the electric heating unit become very convenient and fast, and it can be directly hung on and taken down, reducing the labor required for installation and disassembly.

[0024] 3. The present invention can also be provided with a compression sleeve. By tightly pressing the corresponding position of the pipe orifice sealing support assembly with the compression sleeve, the degree of outward expansion of the pipe orifice sealing support assembly when heated can be minimized, thereby reducing the influence in the case of sudden heating and cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a side view schematic diagram of the present invention after hiding the side plate;

[0026] Figure 2 is a top view schematic diagram of the present invention after hiding the top plate;

[0027] Figure 3 is a rear view schematic diagram of the present invention after hiding the rear panel;

[0028] Figure 4 is Figure 1 a side view schematic diagram after the electric heating module in

[0029] Figure 5 a front view schematic diagram of the present invention;

[0030] Figure 6 a structural schematic diagram of the electric heating module of the present invention;

[0031] Figure 7 a side view schematic diagram of the hanging plate of the present invention;

[0032] Figure 8 a front view schematic diagram of the hanging plate of the present invention;

[0033] Figure 9 a front view schematic diagram of the strip board of the present invention;

[0034] Figure 10 a side view schematic diagram of the strip board of the present invention;

[0035] Figure 11 a sectional structural schematic diagram of the electric heating unit of the present invention;

[0036] Figure 12 a sectional structural schematic diagram of the cylinder barrel of the electric heating unit of the present invention;

[0037] Figure 13 a structural schematic diagram of the quartz electric heating tube and the screw sleeve of the electric heating unit of the present invention after assembly;

[0038] Figure 14 a sectional structural schematic diagram of the quartz electric heating tube of the present invention in one side view direction;

[0039] Figure 15 a sectional structural schematic diagram of the quartz electric heating tube of the present invention in another side view direction;

[0040] Figure 16 a sectional structural schematic diagram of an existing quartz electric heating tube in one side view direction;

[0041] Figure 17 a sectional structural schematic diagram of an existing quartz electric heating tube in another side view direction.

[0042] Meanings of the reference numerals in the figure:

[0043] 1 - Quartz electric heating tube; 1.1 - Quartz base tube; 1.1.1 - Tube opening; 1.2 - Electric heating film layer; 1.3 - Lead wire; 1.3.1 - Inner end of the lead wire; 1.4 - Electrode; 1.5 - Compression sleeve; 2 - Tube opening sealing and supporting assembly; 2.1 - Inner lining ceramic sheet; 2.1.1 - Second conical surface; 2.2 - Inner lining sleeve; 2.2.1 - First conical surface; 2.3 - Locking bolt; 2.4 - Nut; 3 - Electric heating unit; 3.1 - Cylinder barrel; 3.1.1 - Inlet; 3.1.2 - Outlet; 3.1.3 - Mounting opening; 3.2 - Heating flow channel; 3.3 - Insulation cover; 3.4 - Stud; 3.4.1 - Flange; 3.5 - Sealing sleeve; 3.6 - Sealing washer; 4 - Cabinet; 4.1 - Base; 4.2 - Frame; 5 - Electric control cabinet; 5.1 - Control panel; 6 - Water inlet pipe; 6.1 - Water inlet pipe connecting flange; 7 - Water outlet pipe; 7.1 - Water outlet pipe connecting flange; 8 - Electric heating module; 9 - Hanging rack; 9.1 - Strip board; 9.2 - Hanging hole; 10 - Intermediate hose; 11 - Inlet water temperature sensor; 12 - Outlet water temperature sensor; 13 - Cross beam; 14 - Bolt; 15 - Flat washer; 16 - Elastic washer; 17 - Nut; 18 - Water supply hose; 19 - Water outlet hose; 20 - Short - circuit assembly; 21 - Hanging board; 21.1 - Hook; 22 - Support leg; 23 - Side beam. Detailed implementation mode

[0044] The present invention will be further described below in conjunction with embodiments.

[0045] As Figures 1 to 5 shown is the electric heating steam and hot water generator of this embodiment, which includes a cabinet 4 and ten electric heating modules 8. As Figure 6 shown, each electric heating module 8 includes a hanging board 21 and three electric heating units 3. The number of electric heating modules 8 and electric heating units 3 can be set according to specific heating requirements, cabinet size and other requirements.

[0046] As Figures 11 to 13 shown is the electric heating unit 3 of this embodiment, which includes a cylinder barrel 3.1 and a quartz electric heating tube 1. One end of the cylinder barrel 3.1 is closed, and the other end is a mounting opening 3.1.3. The quartz electric heating tube 1 is inserted into the cylinder barrel 3.1 from the mounting opening 3.1.3. The end of the quartz base tube 1.1 where the tube opening is located is hermetically connected to the mounting opening 3.1.3. There is a heating flow channel 3.2 of a certain size between the quartz base tube 1.1 and the inner wall of the cylinder barrel 3.1. Inlets 3.1.1 and outlets 3.1.2 communicating with the heating flow channel inside are respectively provided at both ends of the cylinder barrel 3.1. During use, water flows into the heating flow channel 3.2 from the inlet 3.1.1, and the water is heated by the quartz electric heating tube 1 in the heating flow channel, and then the water flows out from the outlet 3.1.2.

[0047] As Figure 14 and Figure 15The quartz electric heating tube 1 of this embodiment is shown as follows. It includes a quartz base tube 1.1, a pipe orifice sealing and supporting assembly 2, and two lead wires 1.3. An electric heating film layer 1.2 and two electrodes 1.4 respectively connected to the electric heating film layer 1.2 are provided on the inner surface of the quartz base tube 1.1. The two electrodes 1.4 are respectively located on opposite sides, and the outer ends of the electrodes 1.4 extend to the orifice 1.1.1 of the quartz base tube 1.1. The pipe orifice sealing and supporting assembly 2 is installed at the orifice 1.1.1 of the quartz base tube. The pipe orifice sealing and supporting assembly 2 supports the orifice 1.1.1 outward and forms a seal at the same time.

[0048] In this embodiment, the outer ends of the electrodes 1.4 are further extended outward to the outside of the pipe orifice sealing and supporting assembly 2. The inner ends 1.3.1 of the two lead wires 1.3 are respectively soldered at the positions where the outer ends of the electrodes 1.4 are located to fix the inner ends of the lead wires 1.3. The two lead wires 1.3 are respectively connected to the two electrodes 1.4. The outer ends of the two lead wires 1.3 are used to connect to an external power supply. After being energized, the electric heating film layer 1.2 will generate heat.

[0049] In order to better reduce the influence in the case of sudden heating and cooling, in this embodiment, a compression sleeve 1.5 is sleeved outside the quartz base tube 1.1. The position of the compression sleeve 1.5 corresponds to the position of the pipe orifice sealing and supporting assembly 2. By tightly pressing the corresponding position of the pipe orifice sealing and supporting assembly 2 through the compression sleeve 1.5, the degree of outward expansion of the pipe orifice sealing and supporting assembly 2 when heated can be minimized as much as possible.

[0050] As Figure 14 shown, the pipe orifice sealing and supporting assembly 2 of this embodiment includes two inner lining ceramic sheets 2.1, a locking bolt 2.3, and an annular inner lining sleeve 2.2. The inner lining sleeve 2.2 is clamped between the two inner lining ceramic sheets 2.1, and there is a certain distance between the two inner lining ceramic sheets 2.1. A perforation is provided in the middle of the two inner lining ceramic sheets 2.2. The locking bolt 2.3 passes through the perforation, is sleeved with a flat washer, and is threadedly connected with a nut 2.4, so as to be connected through the locking bolt 2.3. First tapered surfaces 2.2.1 are respectively provided on the inner sides of both ends of the inner lining sleeve 2.2, and second tapered surfaces 2.1.1 are correspondingly provided on the sides of the inner lining ceramic sheets 2.1. The second tapered surfaces 2.1.1 are in contact with the first tapered surfaces 2.2.1, and the second tapered surfaces 2.1.1 and the first tapered surfaces 2.2.1 can slide relative to each other. The outer surface of the inner lining sleeve 2.2 fits with the inner wall of the quartz base tube 1.1. In the process of gradually tightening the locking bolt 2.3, the two inner lining ceramic sheets 2.1 will continuously approach each other. Through the interaction between the second tapered surfaces 2.1.1 and the first tapered surfaces 2.2.1, the inner lining sleeve 2.2 is extruded outward, so as to tightly press on the inner wall of the quartz base tube 1.1 to complete the support and seal of the orifice 1.1.1. The inner lining sleeve 2.2 can be a sealing rubber ring.

[0051] Among them, the structure of the end of the quartz-based tube where the tube opening is hermetically connected to the mounting port is as follows: As Figure 11 shown, at the tube opening 1.1.1 of the quartz-based tube 1.1, a stud 3.4 is sleeved through a sealing sleeve 3.5. The sealing sleeve 3.5 is pressed between the stud 3.4 and the outer wall of the quartz-based tube 1.1. The sealing between the stud 3.4 and the quartz-based tube 1.1 is achieved through the sealing sleeve 3.5. The stud 3.4 is provided with an external thread, and the mounting port 3.1.3 is provided with an internal thread. The stud 3.4 is threadedly connected to the mounting port 3.1.3. A flange 3.4.1 is provided at the outer end of the stud 3.4. A sealing washer 3.6 is pressed between the flange 3.4.1 and the end face of the mounting port 3.1.3. The sealing between the stud 3.4 and the cylinder block 3.1 is achieved through the sealing washer 3.6. The sealed insertion of the electric heating tube is achieved through the sealing sleeve 3.5 and the sealing washer 3.6.

[0052] To ensure safety, an insulating cover 3.3 is provided at the tube opening 1.1.1 of the quartz-based tube 1.1.

[0053] As shown in 6, the three electric heating units 3 of the electric heating module 8 in this embodiment are vertically arranged side by side and fixedly installed on the left and right hanging plates 21. The fixing method is by fixing with a bolt kit. The hanging plates 21 are arranged vertically, and the heating channels 3.2 of the three electric heating units 3 are connected in series in sequence.

[0054] The cabinet 4 is provided with a base 4.1 and a frame 4.2. Support feet 22 for supporting on the ground are provided under the base 4.1. The frame 4.2 is installed on the upper surface of the base 4.1. A hanging rack 9 is provided inside the cabinet 4. The hanging plates 21 and the hanging rack 9 are provided with a detachable hanging structure that cooperates with each other, so that the electric heating module 8 can be directly hung on the hanging rack 9 through the hanging plates 21.

[0055] The more specific structure of this embodiment is: The detachable hanging structure includes hooks 21.1 provided on the hanging plates 21 and corresponding hanging holes 9.2 provided on the hanging rack 9. Two upper and lower hooks 21.1 are respectively provided on the left and right hanging plates 21. The hooks 21.1 are downward-facing inverted hooks. The hanging rack 9 includes six strip plates 9.1 arranged horizontally side by side. The number of strip plates 9.1 can also be changed according to actual design requirements. As shown in 4, there is a certain spacing between adjacent strip plates 9.1, and the hanging holes 9.2 are correspondingly provided on the strip plates 9.1. One side of the strip plate 9.1 of this embodiment close to the cabinet 4, and the hanging plates 21 are provided at the rear of the electric heating module 8. The upper and lower ends of the strip plate 9.1 are fixedly connected to the upper and lower cross beams 13 inside the cabinet 4 through a bolt kit, and the two ends of the upper and lower cross beams 13 are supported by side beams 23. The bolt kit includes a bolt 14, a flat washer 15, a spring washer 16, and a nut 17.

[0056] The process of hanging the electric heating module 8 is as follows: The electric heating module 8 is fed into the cabinet body 4 from the side where the hanging rack 9 is located. The electric heating module 8 passes through the gap between the two strip plates 9.1, adjusts its position until the hook 21.1 is correspondingly hooked in the hanging hole 9.2. At this time, the electric heating module 8 is located between two adjacent strip plates 9.1.

[0057] Of course, after the hanging of the electric heating module 8 is completed, the electric heating modules 8 in the same column still need to be connected through the intermediate hose 10. In this embodiment, there are three columns of electric heating modules 8. The two electric heating modules 8 in each column are connected in series, and after the series connection, they are respectively connected to the water inlet pipe 6 and the water outlet pipe 7 in the cabinet body 4 through the water inlet hose 18 and the water outlet hose 19. The outer ends of the water inlet pipe 6 and the water outlet pipe 7 are respectively provided with a water inlet pipe connection flange 6.1 and a water outlet pipe connection flange 7.1 for connecting with external pipelines.

[0058] Of course, the electric steam and hot water generator is also provided with an electric control cabinet 5 for controlling it. The electric control cabinet 5 in this embodiment is integrally arranged with the cabinet body 4 and is arranged at the front end of the cabinet body 4. As Figure 5 shown, a control panel 5.1 is provided in front of the electric control cabinet 5. In order to detect the temperatures in the water inlet pipe 6 and the water outlet pipe 7, a water inlet temperature sensor 11 and a water outlet temperature sensor 12 are respectively arranged in the water inlet pipe 6 and the water outlet pipe 7. The water inlet temperature sensor 11, the water outlet temperature sensor 12 and the quartz electric heating tube 1 are respectively electrically connected to the electric control cabinet 5.

[0059] The inlets and outlets of the electric heating units 3 both extend outwards and protrude. The inlets and outlets are respectively located at the bottom and the top. The inlets and outlets between the adjacent upper and lower electric heating units 3 correspond to each other and are connected through the short-circuit assembly 20, so as to connect the heating flow channels 3.2 of the electric heating units 3 of the same electric heating module 8 in series. The electrical connection ends of the quartz electric heating tubes 1 are located on the outside. When the electric heating module 8 is hung on the hanging rack 9, the electrical connection ends of the quartz electric heating tubes 1 are located on the side where the hanging rack 9 is located, which is convenient for the connection of wires.

[0060] The generator of the present invention can be used to generate steam or hot water simultaneously. When in use, the water source enters from the water inlet pipe, and the steam or hot water obtained after being heated by the electric heating unit in sequence is output from the water outlet pipe.

[0061] During actual use, when hot water needs to be generated, the function selection knob or button is set to the hot water gear. At this time, the thermostat in the electric control cabinet of the generator controls the water boiling temperature, and the maximum can only reach 100°C. It is impossible to further increase the temperature setting. On the contrary, when steam needs to be generated, the function selection knob or button is set to the steam gear, and the thermostat loses its function and only displays the real-time temperatures of the water inlet pipe and the water outlet pipe, without playing a control role. The control part is to control the pressure setting inside the pressure vessel by a pressure control sensor. The general operation is: set the steam function, set and adjust the pressure, turn on the water pump, and start the machine to work.

[0062] The above embodiments of the present invention do not limit the protection scope of the present invention. The implementation manners of the present invention are not limited thereto. All such modifications, substitutions or changes in various other forms made to the above structure of the present invention according to the above content of the present invention, in accordance with the common general knowledge and conventional means in the art, without departing from the above basic technical idea of the present invention, shall fall within the protection scope of the present invention.

Claims

1. An electric heating steam and hot water generator, which comprises a cabinet body and at least one electric heating unit. The electric heating unit includes a cylinder and a quartz electric heating tube. One end of the cylinder is closed, and the other end is provided with an installation port. The quartz electric heating tube is inserted into the cylinder from the installation port. Both ends of the cylinder are respectively provided with an inlet and an outlet communicating with its interior. The quartz electric heating tube includes a quartz base tube, a pipe orifice sealing and supporting assembly, and two lead wires. An electric heating film layer and two electrodes respectively connected to the electric heating film layer are provided on the inner surface of the quartz base tube. The two electrodes are respectively located on opposite sides. The pipe orifice sealing and supporting assembly is installed at the pipe orifice of the quartz base tube. The pipe orifice sealing and supporting assembly supports the pipe orifice outwards and forms a seal at the same time. It is characterized in that: The outer ends of the electrodes extend to the outside of the pipe orifice sealing and supporting assembly, and the inner ends of the two lead wires are respectively soldered to the positions where the outer ends of the electrodes are located; a screw sleeve is sleeved at the pipe orifice of the quartz base tube, and a sealing sleeve is press-fitted between the screw sleeve and the outer wall of the quartz base tube to achieve the seal between the screw sleeve and the quartz base tube. The quartz base tube is inserted into the cylinder through the installation port, and the screw sleeve is threadedly connected to the installation port. A flange is provided at the outer end of the screw sleeve, and a sealing washer is pressed between the flange and the end face of the installation port to achieve the seal between the screw sleeve and the cylinder. The electrothermal steam and hot water generator includes at least one electric heating module. The electric heating module includes at least one hanging plate, and the electric heating unit is fixedly installed on the hanging plate. A hanging rack is provided in the cabinet, and the hanging plate and the hanging rack are provided with a detachable hanging structure that cooperates with each other, so that the electric heating module can be directly hung on the hanging rack through the hanging plate. A pressing sleeve is sleeved on the outside of the quartz base tube, and the position of the pressing sleeve corresponds to the position of the pipe orifice sealing and supporting assembly.

2. The electric heating steam and hot water generator according to claim 1, characterized in that: The pipe orifice sealing and supporting assembly includes two inner ceramic linings, locking bolts and an annular inner lining sleeve. The inner lining sleeve is clamped between the two inner ceramic linings, and the two inner ceramic linings are connected by the locking bolts. First tapered surfaces are respectively provided on the inner sides of both ends of the inner lining sleeve, and second tapered surfaces are correspondingly provided on the sides of the inner ceramic linings. The second tapered surfaces are in contact with the first tapered surfaces, and the outer surface of the inner lining sleeve fits with the inner wall of the quartz base tube.

3. The electric heating steam and hot water generator according to claim 2, characterized in that: The detachable hanging structure includes a hook provided on the hanging plate and a hanging hole correspondingly provided on the hanging rack, and the hook can be cooperatively hooked in the hanging hole.

4. The electric heating steam and hot water generator according to claim 3, characterized in that: The hanging rack includes a plurality of strip plates arranged side by side horizontally. The hanging holes are provided on the strip plates. Hooks are respectively provided on both sides of the hanging plate. When the electric heating module is hung on the hanging rack, the electric heating module is located between two adjacent strip plates.

5. The electric heating steam and hot water generator according to claim 4, characterized in that: Vertical hanging plates are respectively provided on both sides of the electric heating module, and two hooks are respectively provided on the hanging plates, one above the other.

6. The electric heating steam and hot water generator according to claim 1, characterized in that: An insulating cover is provided at the pipe orifice of the quartz base tube.

7. The electric heating steam and hot water generator according to claim 1, characterized in that: The electrothermal steam and hot water generator further includes an electric control cabinet, and the electric control cabinet is integrally provided with the cabinet.

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