CN115875659A - Steam generator for steam household appliance and steam household appliance - Google Patents

Abstract

The invention discloses a steam generator for a steam household appliance and the steam household appliance. The water pipe is constructed in a telescopic mode along with the change of the temperature of the water pipe; the heating member is disposed inside and/or outside the water pipe to heat the water pipe. This steam generator can remove accumulational incrustation scale in the water pipe automatically in the use, has avoided influencing steam generator's normal operating because of the accumulation of incrustation scale to improved steam household electrical appliances's reliability and security, and this steam generator's simple structure, the size is littleer, the arrangement in steam household electrical appliances of being more convenient for, so that steam household electrical appliances' overall structure is compacter, and space utilization is higher.

Description

Steam generator for steam household appliance and steam household appliance

Technical Field

The invention relates to the technical field of steam household appliances, in particular to a steam generator for a steam household appliance and the steam household appliance.

Background

The inside incrustation scale that easily deposits of water pipe in traditional steam generator after long-time the use leads to steam generator water pipe to block up, influences the normal operating of steam household electrical appliances, causes steam generator's reliability and security lower to, steam generator's size is great, needs to occupy great space in steam household electrical appliances inside, leads to steam generator's arranging more difficult, influences steam household electrical appliances's internal volume, exists and improves the space.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. To this end, the present invention proposes a steam generator for a steam appliance, which is capable of automatically removing scale accumulated in a water pipe during use, so that the reliability and safety of the steam generator are improved, and the steam generator has a simpler overall structure, is smaller in size, and is more conveniently disposed in the steam appliance.

The invention also provides a steam household appliance with the steam generator for the steam household appliance.

A steam generator for a steam home appliance according to an embodiment of the present invention includes: a water pipe configured to be retractable according to a change in temperature to which the water pipe is subjected; a heating member disposed inside and/or outside the water pipe to heat the water pipe.

According to the steam generator for the steam household appliance, disclosed by the embodiment of the invention, the scale accumulated in the water pipe can be automatically removed in the use process, the influence on the normal operation of the steam generator due to the accumulation of the scale is avoided, so that the reliability and the safety of the steam household appliance are improved, and the steam generator is simple in structure, smaller in size and more convenient to arrange in the steam household appliance, so that the whole structure of the steam household appliance is more compact, and the space utilization rate is higher.

In addition, the steam generator for the steam household appliance according to the embodiment of the invention can also have the following additional technical characteristics:

according to some embodiments of the invention, the water tube is adapted to elongate as its temperature increases and to shorten as its temperature decreases.

According to some embodiments of the invention, the water tube is configured as a memory alloy piece.

According to some embodiments of the invention, the water tube is constructed as a piece of copper zinc aluminium shape memory alloy.

According to some embodiments of the invention, the heating element comprises: the heating pipe, the water pipe structure is the pipe, the heating pipe spiral winding is in the outside of pipe.

According to some embodiments of the invention, the heating element comprises: the hot plate, the water pipe structure is square pipe, the hot plate is attached on at least one lateral wall of square pipe.

According to some embodiments of the invention, a heat conducting layer is arranged between the heating element and the water pipe.

According to some embodiments of the invention, the heating element comprises: and the electromagnetic induction coil is sleeved outside the water pipe.

According to some embodiments of the invention, the inner wall of the water tube is configured as a smooth inner wall.

According to another aspect of the invention, the steam household appliance comprises the steam generator for the steam household appliance.

Drawings

Fig. 1 is a schematic structural view of a steam generator according to an embodiment of the present invention;

fig. 2 is a perspective view of a steam generator according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a steam generator according to another embodiment of the present invention.

Reference numerals:

the steam generator 100, pipe 1, heating pipe 2, square pipe 3, hot plate 4.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

A steam generator 100 for a steam home appliance according to an embodiment of the present invention will be described with reference to fig. 1 to 3.

The steam generator 100 for a steam home appliance according to an embodiment of the present invention may include: a water pipe and a heating element.

As shown in fig. 1 to 3, a steam generator 100 according to an embodiment of the present invention is a device for generating steam by heating liquid water, and is suitable for steam home appliances such as a steam box, a steam oven, and a microwave oven to cook food using the steam. Because the inside incrustation scale that easily deposits of water pipe in traditional steam generator after long-time the use leads to steam generator water pipe to block up, influences the normal operating of steam household electrical appliances, causes steam generator's reliability and security lower to, steam generator's size is great, needs to occupy great space in steam household electrical appliances inside, leads to steam generator's arranging more difficult, influences the internal volume of steam household electrical appliances.

To this end, the embodiment of the present invention designs the steam generator 100 composed of the water pipe and the heating member for heating the water pipe, and enables the water pipe of the steam generator 100 to automatically expand and contract with the change of the temperature. From this for the incrustation scale in the water pipe can drop automatically at the automatic flexible in-process of water pipe, and along with rivers discharge, and steam generator 100's overall structure is simpler, and the size is littleer, is more convenient for arrange, and can select the level or the side is installed according to the shape of steam household electrical appliances inner space in steam household electrical appliances inside, makes steam household electrical appliances inner space obtain effectual utilization.

Wherein, steam generator 100 comprises water pipe and heating member, and liquid water is suitable for inside getting into steam household electrical appliances through the water pipe to turn into steam by liquid water in the water pipe, and carry steam inside steam household electrical appliances, so that the steam after the heating can heat the inside food of steam household electrical appliances and boil. Optionally, the heating element is disposed inside and/or outside the water pipe to heat the water pipe, so as to heat the liquid water in the water pipe through the heating water pipe or directly heat the liquid water, so that the liquid water is converted into water vapor after being heated. That is, the heating member may be disposed inside or outside the water pipe, or both inside and outside the water pipe, so as to improve heating efficiency, and thus, the generation efficiency of the steam can be improved.

Further, the water pipe is configured to be retractable according to a change of a temperature received by the water pipe, and since the water pipe changes in temperature during operation of the steam generator 100, that is, the heater continuously heats the water pipe, so that the temperature of the water pipe continuously rises, and when cold water flows into the water pipe, the temperature of the water pipe temporarily decreases, so that the water pipe can be continuously and automatically retracted along with the change of the temperature, and since the retraction of the water pipe changes an area of an inner wall of the water pipe, scale accumulated on the inner wall of the water pipe falls off from the inner wall of the water pipe during the retraction of the water pipe and is discharged outside the water pipe along with the flow of the water flow, so that it is unnecessary to manually add cleaning substances such as citric acid to clean the scale in the water pipe, thereby facilitating cleaning of the scale in the steam generator 100, and avoiding damage to the steam generator 100 due to accumulation of the scale in the water pipe.

In addition, because the embodiment of the invention adopts the form of the flow channel type steam generator with the heating element matched with the water pipe, the integral structure is relatively flat, the integral size is relatively small, the requirement on the installation space is lower, the arrangement is more convenient, and the installation requirements of horizontal or side standing and the like can be met.

According to the steam generator 100 for the steam household appliance, the steam generator 100 can automatically remove scale accumulated in the water pipe in the use process, and the influence on the normal operation of the steam generator 100 due to the accumulation of the scale is avoided, so that the reliability and the safety of the steam household appliance are improved, and the steam generator 100 is simple in structure, smaller in size and more convenient to arrange in the steam household appliance, so that the whole structure of the steam household appliance is more compact, and the space utilization rate is higher.

According to some embodiments of the present invention, the water pipe is adapted to extend with the increase of the temperature and to shorten with the decrease of the temperature, that is, during the operation of the steam generator 100, the temperature of the water pipe gradually increases under the heating effect of the heating element, the water pipe gradually extends with the gradual increase of the temperature, and after the steam generator 100 stops heating, the heating element stops heating the water pipe, the temperature of the water pipe gradually decreases to the room temperature, the water pipe gradually shortens with the decrease of the temperature, or, during normal heating, the water flow in the water pipe rapidly takes away the heat of the water pipe, and the water pipe shortens with the abrupt decrease of the temperature.

From this, at steam generator 100's operation in-process, the water pipe can carry out the flexible of many times shape to break away from the adnexed incrustation scale of inner wall at flexible in-process, so that the incrustation scale can discharge the pipe along with rivers together, thereby avoided the pile up of incrustation scale, and then improved steam generator 100's security.

According to some embodiments of the invention, the water tube is configured as a memory alloy piece. The memory alloy is a material composed of more than two metal elements, and the memory alloy part has a shape memory effect through thermoelasticity and martensite phase transformation and inversion thereof. Specifically, the water pipe has a two-way memory effect, so that the water pipe can be stretched under the shape memory effect of the memory alloy part after being heated and can be shortened after the temperature is reduced, and the water pipe can be separated from scale attached to the inner wall in the stretching and shortening processes.

Preferably, the water pipe is constructed as a copper-zinc-aluminum shape memory alloy member. Since the copper-zinc-aluminum shape memory alloy member has a relatively low price and a relatively stable property, and does not generate harmful substances during a high-temperature heating process, the manufacturing cost of the water pipe can be reduced and the safety of the steam generator 100 can be improved by manufacturing the water pipe using the copper-zinc-aluminum shape memory alloy. Of course, the embodiments of the present invention are not limited thereto, and the water pipe may be made of one or more of copper-zinc-tin shape memory alloy, copper-zinc-silicon shape memory alloy, or iron-manganese-silicon shape memory alloy.

According to some embodiments of the present invention, as shown in fig. 1 and 2, a heating element includes: the heating pipe 2, wherein, the water pipe structure is pipe 1, and the spiral winding of heating pipe 2 is in the outside of pipe 1 to make the area of contact between heating pipe 2 and the pipe 1 bigger, thereby can ensure the heating effect of heating pipe 2 to pipe 1. And, the spiral winding of heating pipe 2 is in the outside of pipe 1, can make everywhere of pipe 1 be heated more evenly to avoid because pipe 1 is heated uneven and the water pipe that leads to appears warping at the extension in-process that is heated, thereby improved steam generator 100 set up the security.

According to other embodiments of the present invention, referring to fig. 3, a heating element includes: the heating plate 4, the water pipe structure is square pipe 3, and heating plate 4 is attached on at least one lateral wall of square pipe 3, and heating plate 4 heats the liquid water in order to heat square pipe 3 through the lateral wall to square pipe 3 to make the liquid water in the square pipe 3 can be turned into steam by liquid in square pipe 3, and carry inside the steam household electrical appliances. Moreover, the overall structure of the steam generator 100 consisting of the heating plate 4 and the square tube 3 can be a flat square structure and can be attached to the inner wall of the inner space of the steam household appliance, so that the overall structure of the steam household appliance is more compact, and the utilization rate of the inner space of the steam household appliance is improved.

According to some embodiments of the present invention, a heat conduction layer (not shown) is disposed between the heating element and the water pipe, so as to make the water pipe heated more uniformly, and avoid the deformation of the water pipe in the heating elongation process caused by uneven heating of the water pipe, thereby further improving the safety of the steam generator 100.

As a preferred embodiment, the heating member includes: the electromagnetic induction coil is sleeved on the outer side of the water pipe so as to heat the water pipe through an electromagnetic induction heating principle. Therefore, the heating effect is better, the structure is simpler, and the manufacturing cost is lower.

According to some embodiments of the present invention, the inner wall of the water pipe is configured as a smooth inner wall, so that the scale accumulated on the inner wall of the water pipe is more easily removed, and thus the scale can be completely separated from the water pipe during the extension and retraction of the water pipe, so as to further improve the descaling effect of the steam generator 100.

In other embodiments, the water pipe may be configured as a resistance pipe having a certain resistance value according to a material property thereof, and capable of converting electric energy into heat energy, and the power supply unit may be capable of supplying the electric energy to the resistance pipe so that the resistance pipe can generate heat by itself. The resistance tube is internally provided with a liquid flowing space, one end of the liquid flowing space in the resistance tube is connected with an external liquid source, the other end of the liquid flowing space is connected with an air outlet channel of the steam generator, liquid water is converted into water vapor from liquid in the liquid flowing space in the resistance tube, and the power supply device is electrically connected with the resistance tube so as to supply power to the resistance tube and enable the resistance tube to generate heat. After power supply unit supplied power to the resistance tube, the resistance tube can turn into heat energy with the electric energy, and the heat that the resistance tube produced can direct liquid water in the liquid flow space of heating liquid to make the liquid water that flows into in the liquid flow space from external liquid source can be turned into steam by liquid after being heated, and steam after will converting is carried inside the steam household electrical appliances from steam generator's outlet channel, so that the steam after the heating can heat the inside food of steam household electrical appliances and cook.

Further, the resistance tube can be arranged in the space of the steam household appliance along with the shape, is not limited by space installation, and can enable the internal space arrangement of the steam household appliance to be more reasonable, so that the volume ratio of the steam household appliance is further improved.

Wherein, the steam generator still includes: the water box can store liquid water so as to provide the liquid water for the resistance tube in time to generate water vapor, the water pipe is connected between one end of the resistance tube and the water box so as to convey the liquid water stored in the water box into the resistance tube, and the water pump is arranged on the water pipe between the water box and the resistance tube so as to provide power for conveying the liquid water.

According to some embodiments of the invention, the power supply device comprises: the power supply can be DC power supply or AC power supply, and the power supply wire is electrically connected between the power supply and the resistance tube to transmit the current of the power supply to the two ends of the resistance tube, thereby heating the liquid water by the heat effect generated by the current flowing through the resistance tube and converting the liquid water into water vapor.

Furthermore, the number of the power supply leads is two, and the two power supply leads are respectively connected to the two outermost ends of the resistance tube in the extending direction. Two power supply wires are suitable for and connect respectively at the feed liquor end of resistance tube and give vent to anger to hold promptly to make whole resistive material of resistance tube can both receive adding of both ends voltage, make whole resistance tube can both produce heat under the effect of power, thereby make the resistance tube can have the biggest area of generating heat, and then make the heating effect of resistance tube better. From this, improved the heating efficiency of resistance tube, and then promoted steam generator's steam production efficiency.

Specifically, one of the power supply leads is connected at a position close to the joint of the water pipe and the resistance pipe, and the other power supply lead is connected at a position close to the joint of the resistance pipe and the air outlet channel of the steam generator. Therefore, the whole resistance tube can generate heat, so that the resistance tube has the largest heat generation area.

According to some embodiments of the invention, the outer side of the resistance tube is provided with an insulating protective layer, wherein the insulating protective layer can play an effective insulating role. From this, when the resistance tube leakage or other trouble appeared, the insulating protection layer can avoid the resistance tube to take place the short circuit to can improve steam generator's operating stability, and still can avoid the resistance tube and the phenomenon that the lapped condition appears and take place the short circuit with peripheral spare.

Further, the resistance value of the resistance tube is related to the material of the resistance tube, and the resistance tube can be constructed into a metal tube, a silicone tube or a graphite tube, wherein the manufacturing materials of the metal tube, the silicone tube and the graphite tube are low in price, the whole manufacturing cost of the steam generator can be reduced, and the resistance tube has good resistivity, is hard in texture and not easy to damage, so that the resistance tube has better heating effect and setting stability.

According to some embodiments of the present invention, the resistance value of the resistance tube is further related to the tube length and the wall thickness of the resistance tube, specifically, the thinner the wall thickness of the resistance tube, the larger the resistance, the lower the power, the longer the tube length of the resistance tube, the larger the resistance, the lower the power, therefore, the wall thickness of the resistance tube is D, D is greater than or equal to 0.1mm and less than or equal to 10mm, that is, the wall thickness of the resistance tube is controlled between 0.1mm and 10mm, so as to enable the resistance tube to have a larger resistance value on the premise of ensuring the overall strength of the resistance tube, so that the resistance tube can release more heat to heat the liquid water to generate water vapor.

Furthermore, the length of the resistance tube is L, L is more than or equal to 5cm and less than or equal to 3m, namely, the length of the resistance tube 1 is controlled between 5cm and 3m, so that the resistance tube has a larger resistance value on the premise of ensuring the whole weight and volume of the resistance tube within a reasonable range, and the resistance tube can release more heat to heat liquid water to generate water vapor.

According to some embodiments of the invention, the power supply lead is provided with an on-off protection device, which can ensure the operation safety of the steam generator. When the water in the water box is insufficient or the circuit is short-circuited, the on-off protection device is suitable for automatically disconnecting the electric connection between the power supply and the resistance tube, so that the dangerous conditions of circuit damage or thermal runaway and the like caused by the fact that the power supply continuously supplies power to the resistance tube are avoided, and the reliability and the safety of the steam household appliance can be improved.

According to some embodiments of the invention, in order to conveniently adjust the temperature and efficiency of steam generated by the steam generator so as to realize free switching of different cooking modes, the embodiment of the invention is further provided with a voltage adjusting device on the power supply wire so as to adjust the heating power of the resistance tube by adjusting the voltage at two ends of the resistance tube, thereby achieving the purpose of changing the efficiency of the resistance tube for generating steam and the temperature of the generated steam.

A steam home appliance according to another aspect of the present invention includes the steam generator 100 for a steam home appliance described in the above embodiments. Other configurations of steam appliances are known in the art and well known to those skilled in the art, and therefore, are not described in detail herein.

In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A steam generator for a steam appliance, comprising:

a water pipe configured to be retractable according to a change in temperature to which the water pipe is subjected;

a heating member disposed inside and/or outside the water pipe to heat the water pipe.

2. A steam generator for a steam appliance as claimed in claim 1, wherein the water tube is adapted to elongate as its temperature increases and to shorten as its temperature decreases.

3. The steam generator for a steam appliance according to claim 2, wherein the water pipe is constructed as a memory alloy member.

4. The steam generator for a steam appliance according to claim 3, wherein the water pipe is constructed of a copper zinc aluminum shape memory alloy member.

5. The steam generator for a steam appliance of claim 2, wherein the heating element comprises: the heating pipe, the water pipe structure is the pipe, the heating pipe spiral winding is in the outside of pipe.

6. The steam generator for a steam appliance of claim 2, wherein the heating element comprises: the hot plate, the water pipe structure is square pipe, the hot plate is attached on at least one lateral wall of square pipe.

7. A steam generator for a steam appliance as claimed in claim 5 or claim 6, wherein a heat conducting layer is provided between the heating element and the water tube.

8. A steam generator for a steam appliance according to claim 3, wherein the heating element comprises: and the electromagnetic induction coil is sleeved outside the water pipe.

9. The steam generator for a steam home appliance according to claim 1, wherein the inner wall of the water pipe is constructed as a smooth inner wall.

10. A steam appliance comprising a steam generator for a steam appliance according to any one of claims 1 to 9.

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