WO2023165179A1

WO2023165179A1 - Steam generator and steam apparatus

Info

Publication number: WO2023165179A1
Application number: PCT/CN2022/134321
Authority: WO
Inventors: 柯兆民; 赵忠玮
Original assignee: 福建新瓦特科技有限公司
Priority date: 2022-03-04
Filing date: 2022-11-25
Publication date: 2023-09-07

Abstract

The present application provides a steam generator, comprising a heating device, which comprises a heating pipe, a steam pipe and a heater base, wherein the heater base is made of heat conductive material; the heating pipe and the steam pipe are both embedded in the heater base; and the heating pipe and the steam pipe transfer heat by means of the heater base. The steam generator provided in the present application is highly efficient in terms of heat conductivity and generates steam at a high speed; in addition, the steam pipe is heated in a uniform manner, which can ensure the quality of generated steam. The present application further provides a steam apparatus.

Description

Steam generators and steam equipment

technical field

The present application relates to the technical field of steam equipment, in particular to a steam generator and steam equipment.

Background technique

Steam has the characteristics of high temperature, and a small amount of liquid water can produce a large amount of steam. Its application in the cleaning field has the advantages of good cleaning effect and saving water resources. In the prior art, there are products that clean by steam, such as steam car washers, steam mops, steam disinfection cabinets, steam irons, steam garment irons, steam dishwashers, and the like.

The steam generation methods in the prior art are basically the way of heating and evaporating boiler water storage. The boiler is used as a water storage container for heating, and water is stored in it. Electric heating or fuel heating is used to heat the boiler, so that the inside of the boiler The boiling water produces steam, and then the steam is output through the delivery pipeline. It can be understood that, according to different application scenarios, the components and structures of the delivery pipeline and the steam outlet are different. With the boiler heating method, since all the water in the boiler needs to be heated and boiled, the steam generation speed is relatively slow, and the dry humidity of the steam is difficult to adjust. The steam produced by it is usually high in humidity, and dry steam cannot be produced, that is, it is not pure gaseous steam in essence, but a gas-liquid mixed steam mixed with liquid in an atomized state, which cannot be used in situations where dry steam is required ; And because it is steam in a gas-liquid mixed state, the temperature is usually difficult to reach a higher temperature, so it is difficult to apply to the situation that requires high-temperature steam. Moreover, the heat transfer efficiency of boiler heating is low, which not only slows the temperature rise, but also causes waste of energy.

Contents of the invention

The purpose of this application is to provide a steam generator and steam equipment, aiming to solve or at least partly solve the shortcomings of the above-mentioned background technology. Ensure the quality of steam generation.

The present application provides a steam generator, including a heating device, the heating device includes a heating pipe, a steam pipe and a heater base, the heater base is made of a heat-conducting material, the heating pipe and the steam pipe Both are buried in the heater base, and the heating pipe and the steam pipe conduct heat transfer through the heater base.

Further, the heater base is cast aluminum or copper, and the heat pipe and the steam pipe are integrally cast with the heater base.

Further, the heating pipe and the steam pipe are arranged close to each other in the heater base.

Further, both the heating pipe and the steam pipe are bent to form a spiral structure, and the heating pipe and the steam pipe are nested with each other.

Further, the helical structure of the heating pipe is sheathed in the helical structure of the steam pipe, a gap is provided between the steam pipe and the heating pipe, and the heater base fills the steam pipe and the gap between the heat pipe.

Further, the height of the spiral structure of the heating pipe is not higher than the height of the spiral structure of the steam pipe.

Further, the upper and lower ends of the helical structure of the heating pipe are located between the upper and lower ends of the helical structure of the steam pipe.

Further, the pipe diameter of the heating pipe is larger than the pipe diameter of the steam pipe.

Further, the helical structure of the heating pipe is in a densely wound arrangement in which each helix abuts against each other, and the helical structure of the steam pipe is in a sparsely wound arrangement in which each helix is separated from each other.

Further, the heating device further includes a thermal insulation core embedded in the base of the heater, and the thermal insulation core is located in the spiral structure of the heating tube and the steam tube.

Further, the height of the thermal insulation core is not higher than the height of the spiral structure of the heating pipe, and is not higher than the height of the spiral structure of the steam pipe.

Further, the upper and lower ends of the thermal insulation core are located between the upper and lower ends of the spiral structure of the heating pipe and the steam pipe.

Further, the thermal insulation core is a cylindrical metal block.

Further, the spiral structure of the heating pipe is sleeved in the spiral structure of the steam pipe, the heat preservation core is sleeved in the spiral structure of the heat pipe, the heat preservation core, the heat pipe The helical structure of the steam pipe and the helical structure of the steam pipe are set in concentric circles.

Further, the heating pipe and the steam pipe are both in the shape of a circular pipe, and the base of the heater is in the shape of a cylinder or a square column.

Further, the heating pipe is an electric heating pipe, which has an electrical connection end extending out of the heater base, both ends of the steam pipe extend out of the heater base, and the extension of the electrical connection end The direction is perpendicular to the extension direction of the two ends of the steam pipe.

Further, the steam generator further includes a temperature sensor, and the temperature sensor is arranged on the base of the heater.

Further, the temperature sensor is arranged close to the heating pipe and the steam pipe, and the temperature sensor is not in contact with the heating pipe and the steam pipe.

Further, the base of the heater is provided with an installation hole, and the temperature sensor is arranged in the installation hole.

Further, the temperature sensor includes a first temperature sensor and a second temperature sensor, the first temperature sensor and the second temperature sensor are both arranged on the heater base and electrically connected to the control circuit, the Both the first temperature sensor and the second temperature sensor are used to detect a preset normal working temperature and a preset shutdown protection temperature of the heating device.

Further, the control circuit controls the heating device to work normally or shut down protection according to the temperature detected by one of the first temperature sensor and the second temperature sensor, the first temperature sensor and the second temperature sensor The two temperature sensors are connected to the same port or different ports of the control circuit.

Further, the preset shutdown protection temperature includes a preset over-temperature protection temperature and a preset power-off protection temperature, the preset power-off protection temperature is greater than the preset over-temperature protection temperature, and the control circuit according to the preset The preset over-temperature protection temperature controls the heating device to stop heating, and controls the steam generator and/or steam equipment to be powered off according to the preset power-off protection temperature.

Further, the temperature sensor includes a first temperature sensor and a second temperature sensor, the first temperature sensor and the second temperature sensor are both arranged on the heater base and electrically connected to the control circuit, the The first temperature sensor is used to detect the preset normal working temperature and the first preset shutdown protection temperature of the heating device, and the second temperature sensor is used to detect the second preset shutdown protection temperature of the heating device.

Further, the first preset shutdown protection temperature includes a first over-temperature protection temperature and a first power-off protection temperature, the first power-off protection temperature is greater than the first over-temperature protection temperature, and the control circuit Control the heating device to stop heating according to the first over-temperature protection temperature, and control the power-off of the steam generator and/or steam equipment according to the first power-off protection temperature; the second preset shutdown protection temperature Including a second over-temperature protection temperature and a second power-off protection temperature, the second power-off protection temperature is greater than the second over-temperature protection temperature, the second over-temperature protection temperature is greater than the first over-temperature protection temperature , the second power-off protection temperature is greater than the first power-off protection temperature.

Further, the steam generator further includes a casing, and the heating device is disposed in the casing.

Further, a thermal insulation layer is provided inside the casing, and the thermal insulation layer is located between the outer wall of the heater base and the inner wall of the casing.

The present application also provides a steam device, including the above-mentioned steam generator, the steam device is a steam car washing machine, a steam mop, a steam disinfection cabinet, a steam iron, a garment steamer, a steam dishwasher, a steam-ozone One of the disinfecting machines.

The steam generator provided by this application uses the heater base to conduct heat transfer between the heating tube and the steam tube, that is, the heat generated by the heating tube is first transferred to the heater base, and then the heat is transferred to the steam tube by the heater base. The steam pipe is heated evenly and the temperature rises rapidly. At the same time, since the heating pipe and the steam pipe are buried in the base of the heater, the heat pipe, the steam pipe and the base of the heater are in close contact, so that the three have good heat conduction performance and reduce the heat loss during the heat conduction process. heat loss. The steam generator not only has high heat transfer efficiency and fast steam generation speed, but also the steam tube is heated evenly, which can ensure the quality of steam generation.

Description of drawings

Fig. 1 is a schematic structural diagram of a steam generator in an embodiment of the present application.

FIG. 2 is a schematic cross-sectional view of FIG. 1 .

FIG. 3 is a schematic diagram of a partial explosion structure in FIG. 1 .

Fig. 4 is a schematic diagram of the exploded structure of the heating device in Fig. 3 .

Fig. 5 is a top view of the heat pipe and the steam pipe in Fig. 4 .

Fig. 6 is a schematic diagram of the exploded structure after further decomposition of the heat pipe and the steam pipe in Fig. 4 .

FIG. 7 is a schematic perspective view of the internal structure of the heater base in FIG. 4 .

Detailed ways

The specific implementation manners of the present application will be further described in detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of this application are used to distinguish similar objects and not necessarily to describe specific sequence or sequence.

As shown in FIGS. 1 to 4 , the steam generator 1 provided by the embodiment of the present application includes a heating device 11 , and the heating device 11 includes a heating pipe 111 , a steam pipe 112 and a heater base 113 . The heater base 113 is made of heat-conducting material, the heating pipe 111 and the steam pipe 112 are embedded in the heater base 113 , and the heating pipe 111 and the steam pipe 112 conduct heat transfer through the heater base 113 .

Specifically, the steam generator 1 provided in this embodiment uses the heater base 113 to conduct heat transfer between the heating tube 111 and the steam tube 112, that is, the heat generated by the heating tube 111 is first transferred to the heater base 113, and then the heat Heater base 113 conducts heat to steam pipe 112, so that steam pipe 112 is heated evenly and heats up rapidly. At the same time, since the heat pipe 111 and the steam pipe 112 are buried in the heater base 113, the heat pipe 111, the steam pipe 112 and the heater base 113 are in close contact, so that the three have good thermal conductivity, And reduce the heat loss in the heat conduction process. The steam generator 1 not only has high heat transfer efficiency and fast steam generation speed, but also the steam pipe 112 is evenly heated, which can ensure the quality of steam generation (the temperature uniformity of steam, the uniformity of dry humidity, etc. are better).

Specifically, in this embodiment, the heating device 11 is an electric heating device, that is, the heating pipe 111 is an electric heating pipe, and the two ends of the heating pipe 111 are respectively provided with a first electrical connection end 1111 and a second electrical connection end 1112. The first electrical connection end 1111 and the second electrical connection end 1112 of the heat pipe 111 are connected to an external circuit to generate heat energy by means of electric heating. Both ends of the steam pipe 112 are provided with a water inlet 1121 and a steam outlet 1122 respectively. The first and second electrical connection ends 1111 , 1112 of the heating pipe 111 and the two ends of the steam pipe 112 , ie, the water inlet 1121 and the steam outlet 1122 , both extend from the heater base 113 . The extension direction of the first and second electrical connection ends 1111, 1112 of the heating pipe 111 is perpendicular to the extension direction of the two ends of the steam pipe 112, which facilitates the arrangement of pipelines and wires. Preferably, both ends of the steam pipe 112 extend laterally from the side of the heater base 113 , and the two electrical connection ends of the heat pipe 111 extend vertically from the top surface of the heater base 113 out.

Further, in this embodiment, the heater base 113 is formed by casting, and the heater base 113 is cast aluminum or copper, and the heating pipe 111 and the steam pipe 112 are integrally cast with the heater base 113 .

Specifically, during manufacture, the fabricated heat pipe 111 and steam pipe 112 can be placed in a mold (not shown), and then molten aluminum or copper is cast or die-cast into the mold, and after the aluminum or copper is cooled The heater base 113 can be obtained. Since the heater base 113 is formed by casting or die-casting, the heater base 113 can be in close contact with the heating pipe 111 and the steam pipe 112, that is, the heating pipe 111 and the steam pipe 112 are tightly covered by the heater base 113; at the same time, Because the heater base 113 adopts a material with excellent thermal conductivity, such as copper or aluminum, the heat generated by the heating pipe 111 can be quickly transferred to the heater base 113, and the heater base 113 conducts the heat to the steam pipe 112 again, so that The steam pipe 112 is heated evenly and rapidly, and can reduce heat loss during heat conduction. Of course, in other embodiments, the heater base 113 can also be formed in other ways.

Further, as shown in FIG. 7 , in this embodiment, an accommodating chamber 1131 is formed in the heater base 113 , the shape and size of the accommodating chamber 1131 are the same as those of the heating tube 111 and the steam tube 112 , and the heating tube 111 and the steam pipe 112 are located in the accommodating chamber 1131 .

Further, as shown in Fig. 2 and Fig. 4, in this embodiment, the heating pipe 111 and the steam pipe 112 are arranged close to each other in the heater base 113, thereby improving the heat transfer efficiency between the heating pipe 111 and the steam pipe 112 .

Further, as shown in FIG. 4 and FIG. 6 , in this embodiment, both the heating pipe 111 and the steam pipe 112 are bent to form a spiral structure, and the heating pipe 111 and the steam pipe 112 are nested in concentric circles.

Specifically, by arranging the heat pipe 111 and the steam pipe 112 in a spiral structure, the heat transfer area of the heat pipe 111 and the steam pipe 112 in the heater base 113 can be increased, and each spiral of the heat pipe 111 can correspond to One or a plurality of adjacent spirals of the steam pipe 112 are heated in subregions, so that the heating effect is good; the heating pipe 111 and the steam pipe 112 are arranged in concentric circles, so that the distances from the heating pipe 111 to the steam pipe 112 remain the same, and there is It is conducive to uniform heating; at the same time, because the heating pipe 111 and the steam pipe 112 are nested with each other, the space occupied by the heating pipe 111 and the steam pipe 112 can be reduced, thereby reducing the volume of the steam generator 1, and the heat generated by the heating pipe 111 can be reduced. The heat is evenly conducted to various positions of the steam pipe 112 to ensure the uniformity of the steam.

Further, as shown in FIG. 2 and FIG. 5 , in this embodiment, the winding diameter of the steam pipe 112 is larger than the winding diameter of the heating pipe 111, and the spiral structure of the heating pipe 111 is sheathed in the spiral structure of the steam pipe 112. In the structure, the overall length of the steam pipe 112 can be increased in this way, which is beneficial to the generation of dry steam, and when the heat of the heating pipe 111 is transferred from the inside to the outside, the steam pipe 112 can also be heated quickly, and the thermal efficiency will be higher. high. Certainly, as an alternative modified embodiment, in other embodiments, the heating pipe 111 may also be sleeved outside the steam pipe 112 . Further, a gap 114 is provided between the steam pipe 112 and the heating pipe 111 , and the heater base 113 fills the gap 114 between the steam pipe 112 and the heating pipe 111 .

Specifically, in this embodiment, since there is a gap 114 between the steam pipe 112 and the heating pipe 111, that is, the steam pipe 112 does not directly contact the heating pipe 111 to transfer heat, but indirectly transfers heat through the heater base 113, which can Avoid the uneven heating of the steam pipe 112 caused by direct contact between the steam pipe 112 and the heating pipe 111 .

Further, as shown in FIG. 2 , in this embodiment, the height of the helical structure of the heating pipe 111 is not higher than the height of the helical structure of the steam pipe 112, and the upper and lower ends of the helical structure of the heating pipe 111 Located between the upper and lower ends of the spiral structure of the steam pipe 112 . Such arrangement makes the heat generated by the heat pipe 111 pass through the steam pipe 112 during the process of conducting outward along the radial direction of the spiral body, which can enhance heat transfer efficiency and heat utilization rate.

Further, as shown in FIG. 2, the diameter of the heat pipe 111 is larger than that of the steam pipe 112, that is, the heat pipe 111 is formed by bending a relatively thick pipe fitting, and the steam pipe 112 is formed by bending a relatively thin pipe fitting. made. The heating pipe 111 is thicker, which can increase the heating area, and the steam pipe 112 is thinner so that it can be heated quickly and evenly, so that the quality of the steam formed by heating the steam pipe 112 can be improved.

Further, as shown in FIG. 2 and FIG. 6 , the helical structure of the heating pipe 111 is closely wound with each helix abutting against each other, and the helical structure of the steam pipe 112 is sparsely wound with each helix separated from each other. The steam pipe 112 is loosely wound so that the surrounding environment of each spiral of the steam pipe 112 is consistent, that is, the periphery of each spiral is covered by the heater base 113, compared with the dense winding of each spiral in contact with each other. In other words, some positions of the outer wall of each spiral are in contact with the heater base 113 , and some positions are in contact with adjacent spirals, which may result in uneven heating.

Further, as shown in FIG. 4 , in this embodiment, both the heating pipe 111 and the steam pipe 112 are circular pipes, and the heater base 113 is a cylindrical structure. Certainly, in other embodiments, the heater base 113 may also be a square column structure (ie, a rectangular parallelepiped or a cube structure) or other shapes.

Further, as shown in Figure 3 and Figure 4, in this embodiment, the heater base 113 is provided with a first through hole 1132 and a second through hole 1133, the water inlet 1121 and the steam outlet 1122 of the steam pipe 112 are respectively After passing through the first through hole 1132 and the second through hole 1133 , it is exposed to the outside of the heater base 113 , so as to facilitate the connection between the steam pipe 112 and the external pipeline. The heater base 113 is provided with a first through hole 1134 and a second through hole 1135, and the first electrical connection end 1111 and the second electrical connection end 1112 of the heat pipe 111 respectively pass through the first through hole 1134 and the second through hole 1135 and are exposed to the Outside the heater base 113, so as to facilitate the connection of the heating tube 111 and the external circuit.

Further, as shown in FIG. 2, in this embodiment, the heating device 11 also includes a thermal insulation core 116, the thermal insulation core 116 is buried in the heater base 113, and the thermal insulation core 116 is located in the spiral of the heating pipe 111 and the steam pipe 112. within the structure.

Specifically, in this embodiment, the thermal insulation core 116 is provided in the spiral structure of the heating pipe 111 and the steam pipe 112, and the thermal insulation core 116 can further enhance heat preservation and heat storage, so that when the steam generator 1 stops heating, The temperature will not decrease rapidly, and the heat utilization rate is high; at the same time, since the heating pipe 111, the steam pipe 112 and the heat preservation core 116 are all buried in the heater base 113, the heat loss in the heat conduction process is reduced. Therefore, the steam generator 1 has high thermal efficiency.

Further, as shown in FIG. 2 , in this embodiment, the height of the thermal insulation core 116 is not higher than the height of the spiral structure of the heating pipe 111 , and is not higher than the height of the spiral structure of the steam pipe 112 . The upper and lower ends of the thermal insulation core 116 are located between the upper and lower ends of the spiral structure of the heating pipe 111 and the steam pipe 112 . By setting in this way, in the height direction, the thermal insulation core 116 does not protrude from both ends of the heating pipe 111 and the steam pipe 112 , so as to maintain heat storage inside the steam pipe 112 .

Further, in this embodiment, the thermal insulation core 116 is a cylindrical metal block, preferably a cast iron block. Since cast iron has better heat storage capacity, the cast iron block is used as the heat preservation core 116, which has good heat preservation and heat storage performance. In this embodiment, the spiral structure of the heating pipe 111 is sleeved in the spiral structure of the steam pipe 112, the thermal insulation core 116 is sleeved in the spiral structure of the heating pipe 111, the thermal insulation core 116, the spiral structure of the heating pipe 111 The structure and the helical structure of the steam pipe 112 are arranged in concentric circles. In another embodiment, there may be multiple thermal insulation cores 116 , which may be arranged equidistantly in a ring in the generator base 113 . In other embodiments, the thermal insulation core 116 can also be a square, round, oval or other shaped metal body, and its material can be steel, iron or other metals.

Further, as shown in FIG. 3 and FIG. 4 , in this embodiment, the steam generator 1 further includes a temperature sensor 14 , and the temperature sensor 14 is disposed on the heater base 113 .

Specifically, in this embodiment, the temperature sensor 14 is set on the heater base 113, and the temperature sensor 14 can be used to accurately control the temperature of the steam (because the heating pipe 111 is a heat source, its temperature is higher than the temperature of the steam, and its temperature It cannot characterize the temperature of the steam; while there is water flowing through the steam pipe 112, the temperature of each part of the steam pipe 112 is uneven, so the temperature sensor 14 cannot be installed on the heating pipe 111 or the steam pipe 112, otherwise the temperature detection value will be inaccurate ), and then control the dry humidity of the steam. The steam generator 1 not only has high heat transfer efficiency and fast steam generation speed, but also the steam pipe 112 is heated evenly, which can ensure the quality of steam generation (good temperature uniformity, dry humidity uniformity, etc. of steam), and can control the temperature of steam at the same time. and dry humidity. During operation, when the temperature sensor 14 detects that the temperature of the heater base 113 reaches a set value, the control circuit (not shown) controls water into the steam pipe 112 to generate steam.

Further, as shown in FIG. 3 and FIG. 4 , in this embodiment, the temperature sensor 14 is arranged close to the heating pipe 111 and the steam pipe 112, and the temperature sensor 14 is not in contact with the heating pipe 111 and the steam pipe 112, so as to prevent the heating pipe 111 from and the steam pipe 112 affect the temperature detection value of the temperature sensor 14 .

Further, as shown in FIG. 4 , in this embodiment, the heater base 113 is provided with a mounting hole 115 , and the temperature sensor 14 is disposed in the mounting hole 115 .

Further, as shown in FIG. 4 , in this embodiment, the inner wall of the mounting hole 115 is threaded to facilitate the installation of the temperature sensor 14 , that is, the temperature sensor 14 is connected to the mounting hole 115 through threads.

Further, as shown in FIG. 3 and FIG. 4, in this embodiment, the temperature sensor 14 includes a first temperature sensor 141 and a second temperature sensor 142, and the first temperature sensor 141 and the second temperature sensor 142 are both arranged on the heater on the base 113.

In one embodiment, the first temperature sensor 141 and the second temperature sensor 142 are at the same position to detect the state of the heating device 11 . Specifically, the first temperature sensor 141 and the second temperature sensor 142 are both arranged on the heater base 113 and electrically connected to the control circuit, and both the first temperature sensor 141 and the second temperature sensor 142 are used to detect the preset Set normal working temperature and preset shutdown protection temperature. The control circuit controls the heating device 11 to work normally or shut down the protection according to the temperature detected by one of the first temperature sensor 141 and the second temperature sensor 142, and the first temperature sensor 141 and the second temperature sensor 142 can be connected to the same control circuit. port or a different port. With such setting, when one of the two temperature sensors fails, normal temperature measurement and control can still be guaranteed.

Further, the preset shutdown protection temperature includes a preset over-temperature protection temperature and a preset power-off protection temperature, the preset power-off protection temperature is greater than the preset over-temperature protection temperature, and the control circuit controls the heating device according to the preset over-temperature protection temperature 11 Stop heating, and control the steam generator 1 and/or steam equipment to be powered off according to the preset power-off protection temperature. That is, the shutdown protection is divided into two levels of protection. When the first level of protection is overtemperature, the heating device 11 is controlled to stop heating. The second level of protection is that when the temperature exceeds the temperature of the overtemperature protection and continues to rise to the power-off protection temperature, then Control the power off of the whole machine.

In another embodiment, the two temperature sensors 14 can also be set as the main temperature control for working control and shutdown protection, and the other as the auxiliary temperature control for starting when the main temperature control fails. to the protective effect. Specifically, during operation, when the first temperature sensor 141 detects that the temperature of the heater base 113 reaches a set value, the control circuit controls water into the steam pipe 112 to generate steam. Under normal circumstances, when the first temperature sensor 141 works normally (that is, the first temperature sensor 141 is not damaged), the temperature of the heating device 11 will be controlled near the normal operating temperature, and the heating device 11 will not overheat, but When the first temperature sensor 141 fails to detect the temperature, the heating device 11 will continue to heat and dry, posing safety hazards. Therefore, setting the second temperature sensor 142 is mainly used for over-temperature protection. When the temperature detected by the second temperature sensor 142 reaches the set shutdown protection temperature, the control circuit controls the steam generator 1 to stop working. Text or sound warning to remind the user that the temperature detection is invalid and needs to be repaired in time. Wherein, the setting value of the shutdown protection temperature should be higher than the setting value of the normal working temperature.

Specifically, the first temperature sensor 141 and the second temperature sensor 142 are both arranged on the heater base 113 and electrically connected to the control circuit. The first temperature sensor 141 is used to detect the preset normal working temperature of the heating device 11 and the first The preset shutdown protection temperature, the second temperature sensor 142 is used to detect the second preset shutdown protection temperature of the heating device 11 . The first preset shutdown protection temperature includes the first over-temperature protection temperature and the first power-off protection temperature, the first power-off protection temperature is greater than the first over-temperature protection temperature, and the control circuit controls the heating device 11 according to the first over-temperature protection temperature Stop heating, and control the steam generator 1 and/or the steam equipment to be powered off according to the first power-off protection temperature. The second preset shutdown protection temperature includes a second over-temperature protection temperature and a second power-off protection temperature, the second power-off protection temperature is greater than the second over-temperature protection temperature, and the second over-temperature protection temperature is greater than the first over-temperature protection temperature , the second power-off protection temperature is greater than the first power-off protection temperature. In this way, when the over-temperature detection and power-off temperature detection of the first temperature sensor 141 fail, the second temperature sensor 142 performs over-temperature temperature detection and power-off temperature detection to realize protection. In one embodiment, the second over-temperature protection temperature is set to be 10-20° C. higher than the first over-temperature protection temperature; the second power-off protection temperature is set to be 10-20° C. higher than the first power-off protection temperature.

Further, as shown in FIG. 4 , in this embodiment, the installation hole 115 includes a first installation hole 1151 and a second installation hole 1152 arranged at intervals, and the first temperature sensor 141 and the second temperature sensor 142 are respectively arranged on the first inside the installation hole 1151 and the second installation hole 1152 .

Further, as shown in FIG. 1 and FIG. 2 , in this embodiment, the steam generator 1 further includes a casing 12 , and the heating device 11 is disposed in the casing 12 .

Further, as shown in FIG. 2 , in this embodiment, the housing 12 is provided with an insulating layer 13 , and the insulating layer 13 is located between the outer wall of the heater base 113 and the inner wall of the housing 12 . By setting the thermal insulation layer 13, the thermal insulation function of the steam generator 1 can be improved, the heat dissipation inside the steam generator 1 can be reduced, the heating efficiency of the steam generator 1 can be improved, and the thermal radiation of the steam generator 1 to peripheral equipment can be reduced.

Further, in this embodiment, the material of the thermal insulation layer 13 is thermal insulation cotton. Insulation cotton not only has the advantages of high temperature resistance, non-combustibility, and low thermal conductivity, but also has relatively low cost. Of course, in other embodiments, the insulation layer 13 can also be made of materials such as airgel and vacuum board.

Further, as shown in FIG. 2 , in this embodiment, at least part of the casing 12 has a double-wall structure, and a heat insulating cavity 121 is provided between the inner wall and the outer wall of the casing 12 .

Specifically, in this embodiment, the casing 12 is configured as a double-wall structure, and a heat insulation cavity 121 is provided between the inner wall and the outer wall of the casing 12. The heat insulation cavity 121 can play a good role in heat insulation, that is, the casing 12 has a good heat insulation function, thereby further improving the heat preservation function of the steam generator 1 .

Further, as shown in FIG. 2 , in this embodiment, the heat insulation cavity 121 is a vacuum environment.

Specifically, since a vacuum cannot conduct heat, setting the heat insulation cavity 121 as a vacuum environment can effectively improve the heat insulation performance of the casing 12 . The vacuum environment in the heat insulation cavity 121 can be formed when the shell 12 is fabricated (that is, the shell 12 is fabricated in a vacuum environment), or formed by evacuating the heat insulation cavity 121 after the shell 12 is fabricated.

The embodiment of the present application also provides a steam device, including the above-mentioned steam generator 1 . Specifically, the steam device can be one of a steam car washing machine, a steam mop, a steam disinfection cabinet, a steam iron, a garment steamer, a steam dishwasher, and a steam-ozone disinfection machine.

The steam generator 1 provided in the embodiment of the present application utilizes the heater base 113 to conduct heat transfer between the heating tube 111 and the steam tube 112, that is, the heat generated by the heating tube 111 is first transferred to the heater base 113, and then transferred to the heater base 113. The seat 113 conducts heat to the steam pipe 112, so that the steam pipe 112 is heated evenly and rapidly. At the same time, since the heat pipe 111 and the steam pipe 112 are buried in the heater base 113, the heat pipe 111, the steam pipe 112 and the heater base 113 are in close contact, so that the three have good thermal conductivity, And reduce the heat loss in the heat conduction process. The steam generator 1 not only has high heat transfer efficiency and fast steam generation speed, but also the steam pipe 112 is evenly heated, which can ensure the quality of steam generation.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims

A steam generator, characterized in that it includes a heating device (11), the heating device (11) includes a heating pipe (111), a steam pipe (112) and a heater base (113), and the heater base The seat (113) is made of heat-conducting material, the heating pipe (111) and the steam pipe (112) are buried in the heater base (113), and the heating pipe (111) and the steam pipe (112) The steam pipe (112) conducts heat transfer through the heater base (113).
The steam generator according to claim 1, characterized in that, the heater base (113) is cast aluminum or cast copper, and the heating pipe (111) and the steam pipe (112) are connected with the The heater base (113) is cast as one.
The steam generator according to claim 1, characterized in that, the heating pipe (111) and the steam pipe (112) are arranged close to each other in the heater base (113).
The steam generator according to claim 1, characterized in that, both the heating pipe (111) and the steam pipe (112) are bent to form a spiral structure, and the heating pipe (111) and the steam pipe (112) mutually socket.
The steam generator according to claim 4, characterized in that, the helical structure of the heating pipe (111) is sleeved in the helical structure of the steam pipe (112), and the steam pipe (112) and A gap (114) is provided between the heating pipes (111), and the heater base (113) fills the gap (114) between the steam pipe (112) and the heating pipe (111).
The steam generator according to claim 4, characterized in that, the height of the spiral structure of the heating pipe (111) is not higher than the height of the spiral structure of the steam pipe (112).
The steam generator according to claim 6, characterized in that, the upper and lower ends of the helical structure of the heating pipe (111) are located at the upper and lower ends of the helical structure of the steam pipe (112) between.
The steam generator according to claim 4, characterized in that, the pipe diameter of the heating pipe (111) is larger than the pipe diameter of the steam pipe (112).
The steam generator according to claim 8, characterized in that, the helical structure of the heating pipe (111) is tightly wound with each helix against each other, and the helical structure of the steam pipe (112) is Open-wound arrangement where each helix is separated from each other.
The steam generator according to claim 4, characterized in that, the heating device (11) further comprises a thermal insulation core (116), and the thermal insulation core (116) is embedded in the heater base (113), And the heat preservation core (116) is located in the spiral structure of the heating pipe (111) and the steam pipe (112).
The steam generator according to claim 10, characterized in that, the height of the heat preservation core (116) is not higher than the height of the spiral structure of the heating pipe (111), and is not higher than the steam pipe ( 112) the height of the helical structure.
The steam generator according to claim 11, characterized in that, the upper and lower ends of the heat preservation core (116) are located at the upper and lower ends of the spiral structure of the heating pipe (111) and the steam pipe (112) between the ends.
The steam generator according to claim 10, characterized in that, the heat preservation core (116) is a cylindrical metal block.
The steam generator according to claim 10, characterized in that, the spiral structure of the heating pipe (111) is sleeved in the spiral structure of the steam pipe (112), and the heat preservation core (116) is sleeved Set in the helical structure of the heating pipe (111), the thermal insulation core (116), the helical structure of the heating pipe (111) and the helical structure of the steam pipe (112) are concentric circle set.
The steam generator according to claim 1, characterized in that, the heat pipe (111) and the steam pipe (112) are both circular pipe structures, and the heater base (113) is a cylindrical structure or square columnar structure.
The steam generator according to claim 1, characterized in that, the heating pipe (111) is an electric heating pipe, which has an electrical connection end extending out of the heater base (113), and the steam pipe ( Both ends of 112) extend out of the heater base (113), and the extension direction of the electrical connection end is perpendicular to the extension direction of the two ends of the steam pipe (112).
The steam generator according to claim 1, characterized in that, the steam generator (1) further comprises a temperature sensor (14), and the temperature sensor (14) is arranged on the heater base (113) .
The steam generator according to claim 17, characterized in that, the temperature sensor (14) is arranged close to the heating pipe (111) and the steam pipe (112), and the temperature sensor (14) is not connected to The heating pipe (111) is in contact with the steam pipe (112).
The steam generator according to claim 17, characterized in that, the heater base (113) is provided with an installation hole (115), and the temperature sensor (14) is arranged in the installation hole (115) .
The steam generator according to claim 17, characterized in that, the temperature sensor (14) comprises a first temperature sensor (141) and a second temperature sensor (142), and the first temperature sensor (141) and the The second temperature sensor (142) is both arranged on the heater base (113) and electrically connected to the control circuit, the first temperature sensor (141) and the second temperature sensor (142) are used for Detecting the preset normal working temperature and the preset shutdown protection temperature of the heating device (11).
The steam generator according to claim 20, characterized in that, the control circuit controls the heating according to the temperature detected by one of the first temperature sensor (141) and the second temperature sensor (142) The device (11) works normally or is shut down for protection, and the first temperature sensor (141) and the second temperature sensor (142) are connected to the same port or different ports of the control circuit.
The steam generator according to claim 20 or 21, wherein the preset shutdown protection temperature includes a preset over-temperature protection temperature and a preset power-off protection temperature, and the preset power-off protection temperature is greater than the preset The preset over-temperature protection temperature, the control circuit controls the heating device (11) to stop heating according to the preset over-temperature protection temperature, and controls the steam generator (1) according to the preset power-off protection temperature and/or the steam appliance loses power.
The steam generator according to claim 17, characterized in that, the temperature sensor (14) comprises a first temperature sensor (141) and a second temperature sensor (142), and the first temperature sensor (141) and the The second temperature sensors (142) are all arranged on the heater base (113) and electrically connected to the control circuit, the first temperature sensor (141) is used to detect the preset temperature of the heating device (11) The normal working temperature and the first preset shutdown protection temperature, the second temperature sensor (142) is used to detect the second preset shutdown protection temperature of the heating device (11).
The steam generator according to claim 23, wherein the first preset shutdown protection temperature includes a first over-temperature protection temperature and a first power-off protection temperature, and the first power-off protection temperature is greater than the set The first over-temperature protection temperature, the control circuit controls the heating device (11) to stop heating according to the first over-temperature protection temperature, and controls the steam generator (1) according to the first power-off protection temperature And/or the steam equipment is powered off; the second preset shutdown protection temperature includes a second over-temperature protection temperature and a second power-off protection temperature, and the second power-off protection temperature is greater than the second over-temperature protection temperature , the second over-temperature protection temperature is greater than the first over-temperature protection temperature, and the second power-off protection temperature is greater than the first power-off protection temperature.
The steam generator according to claim 1, characterized in that, the steam generator (1) further comprises a casing (12), and the heating device (11) is arranged in the casing (12); The casing (12) is provided with an insulating layer (13), and the insulating layer (13) is located between the outer wall of the heater base (113) and the inner wall of the casing (12).
A steam device, characterized in that it comprises the steam generator (1) according to any one of claims 1-25, the steam device is a steam car washing machine, a steam mop, a steam disinfection cabinet, a steam iron, a steam One of garment steamers, steam dishwashers, and steam-ozone sterilizers.