CN212771611U

CN212771611U - Steam electric iron

Info

Publication number: CN212771611U
Application number: CN202020726211.4U
Authority: CN
Inventors: 陈代国
Original assignee: Shenzhen Ruisente Electronic Technology Co ltd
Current assignee: Shenzhen Ruisente Electronic Technology Co ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2021-03-23
Anticipated expiration: 2030-05-06

Abstract

The utility model discloses a steam electric iron, including casing, flatiron bottom plate, holding water tank and heating thick film, this heating thick film includes two heating coil that resistivity is the same, and second heating coil is thinner, first heating coil is thicker, utilizes first heating coil and second heating coil to work jointly, and total calorific capacity is big, is favorable to steam to produce fast to can only utilize one of them heating coil to heat alone, change the production of steam, promptly the utility model discloses a heating coil of different power matches the production of adjusting steam that comes, need not operating personnel and drops into more attention time, avoids because of the not good mistake that irones that leads to of time control, and operation convenience is better.

Description

Steam electric iron

Technical Field

The utility model relates to a heating technology field, concretely relates to resistance heating field, in particular to steam electric iron.

Background

The process of ironing the laundry using the electric steam iron can be divided into three different processes: fiber finishing, fiber relaxation and fiber setting. The temperature of the fabric is raised to about 100 c during the finishing stage of the fibers and is typically maintained at about 100 c during the relaxation stage of the fibers, thereby maintaining both high temperature and high humidity in the fabric to prevent rapid recovery of the fibers. During the setting stage of the fiber, the temperature of the fabric needs to be gradually reduced so as to keep the fabric set.

In order to better accommodate these three phases, it is necessary to control the steam generator to adjust the amount of heat required to heat the fabric, i.e., to regulate the amount of steam generated. Currently, the power of the steam generator is relatively fixed, and the amount of generated steam is generally adjusted by controlling the heating time, but this method requires much effort of an operator to pay attention to the time, and the operation convenience is poor.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an electric steam iron to solve the problem of poor convenience in operation of adjusting the amount of steam generated by the conventional electric steam iron.

The utility model provides a pair of steam electric iron, include:

a housing;

the iron bottom plate is connected to the bottom of the shell and defines an internal cavity with the shell, and a plurality of steam exhaust holes are formed in the iron bottom plate;

the water containing tank is arranged in the inner cavity and is positioned above the iron bottom plate, the water containing tank is provided with a guide pipe, and the guide pipe is communicated with the steam exhaust holes;

the heating thick film is attached to the wall of the water containing tank and in heat conduction contact with the water containing tank, the heating thick film comprises an insulating packaging layer, and a first heating coil and a second heating coil which are arranged in a staggered mode, the first heating coil is distributed on the wall of the water containing tank in a surrounding mode, the second heating coil is distributed on the wall of the water containing tank in a surrounding mode, the cross section area of a lead of the second heating coil is smaller than that of a lead of the first heating coil, the two heating coils are identical in resistivity, and the insulating packaging layer wraps the first heating coil and the second heating coil.

Optionally, the water containing tank is a cylinder, the bottom surface of the water containing tank faces the soleplate, and the heating thick film is attached to the bottom surface of the water containing tank.

Optionally, the plurality of steam vents are arranged along an edge of the soleplate, and the water reservoir is fixed to the soleplate and located within an area defined by the plurality of steam vents.

Optionally, the bottom surface of the water containing tank is in heat-conducting contact with the iron soleplate, and the iron soleplate is a metal heat-conducting plate.

Optionally, the first heating coil and the second heating coil are respectively arranged around the shape of the wall of the water containing tank.

Optionally, the heating thick film further comprises a plurality of conductive pads for connecting a power supply, and two ends of the first heating coil and two ends of the second heating coil are respectively connected with the conductive pads.

Optionally, one end of the first heat-generating coil and one end of the second heat-generating coil are adjacently disposed and both connected to the first conductive pad, the other end of the first heat-generating coil is connected to the second conductive pad, and the other end of the second heat-generating coil is connected to the third conductive pad.

Optionally, the heated thick film further comprises a temperature controller in communication with the power source, the plurality of conductive pads comprises a fourth conductive pad, and the temperature controller is selectively insertable into the fourth conductive pad.

Optionally, the heating thick film further comprises a substrate base material, the first heating coil and the second heating coil are arranged on the substrate base material, the substrate base material is provided with a first groove and a second groove, the first heating coil is arranged in the first groove, and the second heating coil is arranged in the second groove.

Optionally, the tops of the first and second heat generating coils are lower than or flush with the surface of the substrate base material.

The utility model relates to a steam electric iron has two heating coil that resistivity is the same, and the wire cross-sectional area of second heating coil is less than the wire cross-sectional area of first heating coil, and the second heating coil is thinner promptly, and first heating coil is thicker, utilizes first heating coil and second heating coil to work jointly, and total calorific capacity is big, is favorable to steam to produce fast to only can utilize one of them heating coil to heat alone, change the production of steam, promptly the utility model discloses a heating coil of different power matches the production of adjusting steam, need not operating personnel and drops into more attention time, avoids because of the not good mistake that irones that leads to of time control, and operation convenience is better.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

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

fig. 2 is a schematic view of the sole structure of the electric steam iron shown in fig. 1;

fig. 3 is a schematic structural view of a heated thick film according to an embodiment of the present invention;

FIG. 4 is a schematic view of traces for heating the thick film shown in FIG. 3;

fig. 5 is a partial cross-sectional view of a heated thick film according to an embodiment of the present invention;

fig. 6 is a partial structural cross-sectional view of a heated thick film according to another embodiment of the present invention.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the following description is only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention. The following embodiments and their technical features may be combined with each other without conflict.

Fig. 1 is a schematic structural view of an electric steam iron according to an embodiment of the present invention. Referring to fig. 1, the steam iron 10 includes a housing 11, a soleplate 12, a water tank 13 and a heating thick film 14.

The housing 11 is an outer shell of the electric steam iron 10, the housing 11 is hollow, and defines an overall appearance of the electric steam iron 10, and is usually a splice or an integral molding such as a plastic shell with good insulation and heat insulation, and may be provided with a handle 111 for easy holding.

The soleplate 12 is attached to the bottom of the housing 11 and defines, together with said housing 11, an internal cavity in which other structural elements of the steam iron 10 are arranged, such as a water containing tank 13 and a heating thick film 14, described below.

Fig. 2 is a schematic view of the bottom structure of the electric steam iron shown in fig. 1. Referring to fig. 2, the soleplate 12 is provided with a plurality of steam vents 121, and the steam vents 121 are through holes penetrating the soleplate 12 and at least allowing steam to pass through.

The water containing tank 13 is used for containing water for generating steam, the water containing tank 13 is arranged in the internal cavity and is positioned on the iron bottom plate 12, the water containing tank 13 is provided with a guide pipe 131 for transmitting the steam, and the guide pipe 131 is communicated with the steam exhaust holes 121.

The heating thick film 14 is attached to the wall of the water containing tank 13 and is in heat conductive contact with the water containing tank 13. Referring to fig. 3, the heating thick film 14 includes an insulating packaging layer 22, and a first heat-generating coil 141 and a second heat-generating coil 142 which are alternately arranged. The first heating coil 141 is distributed on the surface of the tank wall of the water tank 13 in a surrounding manner, the second heating coil 142 is distributed on the surface of the tank wall of the water tank 13 in a surrounding manner, the cross-sectional area of the wire of the second heating coil 142 is smaller than that of the wire of the first heating coil 141, the two wires have the same resistivity, and the insulating packaging layer 22 coats the first heating coil 141 and the second heating coil 142.

For the wire having a uniform thickness, the so-called wire cross-sectional area may mean the thickness of the wire, that is, the single wire of the second heat generating coil 142 is thinner than the single wire of the first heat generating coil 141, in other words, the first heat generating coil 141 is thicker and the second heat generating coil 142 is thinner.

According to the joule law relation 1-1 and the resistance and heat quantity relation 1-2, it can be known that the resistance and the cross-sectional area of the wire are in an inverse proportion relation, and the resistance and the heat quantity of the wire are in an inverse proportion relation, so that the heat quantity and the cross-sectional area are in a direct proportion relation through calculation.

Q＝U²R T relation 1-1

R ═ rho L/S relation 1-2

Wherein Q represents heat in joules (J); u represents a voltage in volts (V); r represents resistance in ohms (Ω); t represents time in seconds(s). ρ represents the resistivity of the wire, S represents the cross-sectional area of the wire, and L represents the length of the wire.

Since the second heat-generating coil 142 is thin and the first heat-generating coil 141 is thick for two heat-generating coils having the same resistivity, the amount of heat generated by the second heat-generating coil 142 is small and the amount of heat generated by the first heat-generating coil 141 is large when the same voltage is received.

Here, the heating thick film 14 is operated by the first heat generating coil 141 and the second heat generating coil 142, and the total heat generation amount is the sum of the heat generation amount Q1 of the first heat generating coil 141 and the heat generation amount Q2 of the second heat generating coil 142, that is, the total heat generation amount Q0 is larger than the heat generation amount of either heat generating coil, Q0 > Q1 and Q0 > Q2, thereby facilitating rapid generation of steam. And in the setting stage of the fiber, or the stage where the amount of steam is small, the electric steam iron 10 may be heated only by the second heat generating coil 142. In summary, the present embodiment can only utilize one of the heat generating coils to heat alone, change the amount of steam generated, that is, adjust the amount of steam generated by the cooperation of the heat generating coils with different powers, without requiring operators to pay more attention to time, avoid ironing errors caused by poor time control, and have better operation convenience.

In addition, the present embodiment can reduce noise generated when the water tank 13 boils by the first and second heat-generating

coils

141 and 142. The first and second heat-generating

coils

141 and 142 serve as heating sources, and by intelligently adjusting the respective heat generation of the first and second heat-generating

coils

141 and 142, when the initial water temperature is low, the water close to the heating sources is not easily vaporized, and the two sets of heat-generating coils can simultaneously operate, and when the water is heated to a certain temperature, only the thicker first heat-generating coil 141 can operate, the possibility that the water close to the heating sources is vaporized is reduced, and when the water is reheated to a higher certain temperature, only the thinner second heat-generating coil 142 can operate, and the possibility that the water close to the heating sources is vaporized is reduced again.

For example, the power of the second heat-generating coil 142 is 600W, the power of the first heat-generating coil 141 is 1200W, when the initial water temperature is low, the water close to the heating source is not easy to be vaporized, the two sets of heat-generating coils heat together, and the heating power is 1800W; when the water is heated to a certain temperature, for example, 60 ℃, only the first heating coil 141 of 1200W is operated, reducing the possibility that the water approaching the heating source is vaporized; when the water is reheated to a certain temperature, such as 90 c, only the second heat generating coil 142 of 600W is operated, again reducing the likelihood that water approaching the heat source will be vaporized. Here, the possibility that the water approaching the heating source is vaporized during the entire heating process is low, thereby contributing to reduction of noise generated when the water tank 13 is boiled.

Referring to fig. 1 and 2, the water in the water tank 13 is vaporized under the heating of the heating thick film 14 to generate steam, and the steam is conducted to the soleplate 12 through the duct 131 and is conducted to the fabric to be ironed through the steam vents 121 formed in the soleplate 12, so as to iron the clothes. In the ironing process, the first heating coil 141 and the second heating coil 142 with different powers are matched to adjust the steam generation amount, so that operators do not need to put more attention to time, ironing errors caused by poor time control are avoided, and the operation is convenient.

Referring to fig. 1, the water containing tank 13 may be a cylinder with a bottom surface facing the soleplate 12, specifically, the heating thick film 14 is attached to the bottom surface of the water containing tank 13, the water containing tank 13 is fixed on the soleplate 12 and is located in an area defined by the steam vents 121, and the steam vents 121 are arranged along the edge of the soleplate 12.

In order to achieve a high heat conduction efficiency, the bottom surface of the water tank 13 may also be directly in heat conductive contact with the soleplate 12, while the heating thick film 14 may be attached to the sidewall of the water tank 13, and the soleplate 12 may be a metal heat-conducting plate with good heat conductivity.

The heated thick film 14 may also be provided with other structural elements such as the substrate shown in fig. 3. Referring to fig. 1 to 3, the substrate 21 may be a plate for supporting the structural elements thereon, such as the first heat-generating coil 141 and the second heat-generating coil 142. Which corresponds to the base plate for heating the thick film 14, where the heating of the thick film 14 can be regarded as an electrical heating plate.

The shape (for example, the shape in a plan view) of the substrate base 21 is not limited, and may be, for example, a circular, rectangular or polygonal shape, and may be adapted to the water tank 13 to which the thick film 14 is heated. In addition, according to the design requirement of the applied water containing tank 13, other structural properties of the substrate base material 21 can also be designed adaptively, for example, when the electric heating plate needs to have higher structural strength for the water containing tank 13, the substrate base material 21 can be a metal base plate, and of course, the substrate base material can also be mainly made of other materials with better structural strength; for example, when the water containing tank 13 requires an electric heating plate and the non-heating side is required to have good heat insulating performance, the base material 21 may be a plastic plate or a base plate made of another heat insulating material.

When the substrate base 21 is made of a metal material, in order to avoid short circuit caused by electrical connection between the conductive first and second heat-generating

coils

141 and 142 and the metal material of the substrate base 21, an insulating layer may be provided for insulation isolation in this embodiment.

For example, as shown in fig. 5 and 6, the substrate base 21 may include a metal base 211 and an insulating layer 212 coated thereon, and the first and second

heat generating coils

141 and 142 are disposed on the insulating layer 212. The insulating layer 212 is used to prevent the first and second

heat generating coils

141 and 142 from being electrically connected to the metal substrate 211 made of a conductive material. The insulating layer 212 may be formed directly on the metal substrate 211 by a film formation method such as sputtering using an insulating material, or the insulating layer 212 may be attached to the metal substrate 211 by adhesion.

Referring to fig. 3 and 4, the first heating coil 141 and the second heating coil 142 are disposed on the substrate 21 as heating sources, and they are arranged on the plane of the substrate 21 in a surrounding manner. It should be understood that the surrounding manner is only a ring-to-ring arrangement as a whole, and not every ring is connected end to end, for example, as shown in fig. 3, a ring of the first heating coil 141 located at the outermost side has a gap at the lower part, and the gap can be used for arranging the bonding pads; in the direction from the outside to the center of the substrate base material 21, the second loop of the second heat generating coil 142 needs to bypass the alignment mechanism 143 of the heating thick film 14, the alignment mechanism 143 is used for placing the heated device (for example, the tank wall of the water tank 13) on the heating thick film 14 according to a predetermined position, for example, three alignment mechanisms 143 arranged in a triangle as shown in fig. 1 are provided with a notch on one side of the heated device, and the three alignment mechanisms 143 are inserted into the three notches arranged in a triangle in a one-to-one correspondence manner, so as to place the heated device on the heating thick film 14 according to the predetermined position.

In order to reduce the occupied area of the first and second heat-generating

coils

141 and 142, the first and second heat-generating

coils

141 and 142 may be respectively disposed around the substrate base material 21, and the loops of the first and second heat-generating

coils

141 and 142 are arranged at staggered intervals, as shown in fig. 3, the substrate base material 21 is a circular base plate, the first heat-generating coil 141 may be a heating resistance wire, and the whole of the first heat-generating coil 141 may be arranged in a plurality of loops, and similarly, the second heat-generating coil 142 may also be a heating resistance wire, and the whole of the second heat-generating coil may be arranged in a plurality of loops.

The plurality of loops of the second heat generation coil 142 and the plurality of loops of the first heat generation coil 141 are alternately arranged in the direction toward the center along the outside of the base material 21. For example, the first heat-generating coil 141 includes a first heat-generating ring 141a, a second heat-generating ring 141b, and a third heat-generating ring 141c in this order from the outside toward the inside, and the ring diameters of the three decrease in this order. As shown in fig. 4, between the first heat generation ring 141a and the second heat generation ring 141b, two rings of the second heat generation coil 142 are arranged, any one ring of the second heat generation coil 142 is not disposed between the second heat generation ring 141b and the third heat generation ring 141c, and the remaining rings of the second heat generation coil 142 are arranged in the third heat generation ring 141 c. In addition, one ends of the third heat generation ring 141c and the first heat generation ring 141a serve as two power supply terminals of the first heat generation coil 141, respectively, and two power supply terminals of the second heat generation coil 142 are adjacent to the two power supply terminals of the first heat generation coil 141, and are arranged at the lower end of the substrate base 21 shown in fig. 3.

Since the first heating coil 141 is thick, in order to prevent the conductive connection from being affected by the rupture at the bent portion when the first heating coil 141 is arranged around the rings, the first heating coil 141 may be provided with reinforcing members 141d, each reinforcing member 141d is provided at the connection portion of two adjacent heating rings, the structural strength of the reinforcing member 141d is higher than that of any one of the rings of the first heating coil 141, and the conductive performance thereof is equal to or higher than that of any one of the rings, thereby ensuring stable electrical connection between the rings of the first heating coil 141. The reinforcing member 141d may be built in the first heat-generating coil 141, or may be disposed outside the first heat-generating coil 141.

The embodiment of the utility model provides an in, connect the electricity respectively to first heating coil 141 and second heating coil 142, both produce the heat under voltage drive, media such as heat transfer feedwater, guarantee higher heating efficiency, and first heating coil 141 and second heating coil 142 winding distribute on substrate 21 place plane, heating resistor's distribution area is great, the heat of production is more dispersed, avoid forming local overheat region, the time of bubble thermal expansion grow slows down, can reduce the ruptured quantity of bubble, reduce the noise that the boiling water produced.

In addition, the first heating coil 141 and the second heating coil 142 have large distribution areas and relatively dispersed heat, so that a local overheating area is avoided, the time for forming steam bubbles by boiling and vaporizing water close to the two heating resistors is also delayed, the vibration caused by the fact that the steam bubbles are changed into water drops when the steam bubbles are cooled is avoided, and the noise generated by water boiling is further reduced.

To achieve this, the first heating coil 141 and the second heating coil 142 are used as electrical heating sources to be connected to a power source, and with continued reference to fig. 3, the heating thick film 14 may further be provided with a plurality of conductive pads for connecting the two heating coils.

In one embodiment, as shown in fig. 3, the conductive pads may be three, i.e., a first conductive pad 301, a second conductive pad 302, and a third conductive pad 303. Since one end of the first heat-generating coil 141 and one end of the second heat-generating coil 142 are disposed adjacent to each other, both are connected to the first conductive pad 301, the other end of the first heat-generating coil 141 is connected to the second conductive pad 302, and the other end of the second heat-generating coil is connected to the third conductive pad 303.

In another embodiment, the number of the conductive pads may be four, two of which are provided at both ends of the first heat generating coil 141 and the other two of which are provided at both ends of the second heat generating coil 142.

Further, as shown in fig. 3, the heating thick film 14 may also be provided with a fourth conductive pad 304 and a temperature controller (not shown). The fourth conductive pad 304 may be arranged at the upper end of the substrate base 21, for example, between the first heat ring 141a and the second heat ring 141 b. The temperature controller can be selectively inserted into the fourth conductive pad 304, and the temperature controller can detect the current heating temperature during insertion, so as to control and switch the rapid heating and heat preservation functions.

Continuing with fig. 5 and 6, the heated thick film 14 may also be provided with an insulating encapsulation layer 22. The insulating encapsulation layer 22 covers the first heat-generating coil 141 and the second heat-generating coil 142, and covers the base substrate 21. The insulating encapsulation layer 22 is an electrical insulating layer, and further, has good thermal conductivity, and is beneficial to directly transferring heat generated by the first heating coil 141 and the second heating coil 142 to media such as water to be heated.

Referring to fig. 5, the upper surface of the substrate base 21 may be a plane on which the first and second heat-generating

coils

141 and 142 are disposed. Of course, the first heat-generating coil 141 and the second heat-generating coil 142 may also be embedded in the substrate base 21, specifically, as shown in fig. 3, 4 and 6, the substrate base 21 is provided with a first groove 213 and a second groove 214, the first heat-generating coil 141 is disposed in the first groove 213, and the second heat-generating coil 142 is disposed in the second groove 214. Further, the tops of the first and second

heat generating coils

141 and 142 may be lower than or even with the surface of the substrate base 21, i.e., the first and second

heat generating coils

141 and 142 are not higher than the substrate base 21.

Although the invention has been shown and described with respect to one or more implementations, equivalent alterations and modifications will occur to others skilled in the art based upon a reading and understanding of this specification and the annexed drawings. The present invention includes all such modifications and variations, and is limited by the scope of the following claims. In particular regard to the various functions performed by the above described components, the terms used to describe such components are intended to correspond, unless otherwise indicated, to any component which performs the specified function of the described component (e.g., that is functionally equivalent), even though not structurally equivalent to the disclosed structure which performs the function in the herein illustrated exemplary implementations of the specification.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the accompanying drawings, such as the combination of technical features between the embodiments, or the direct or indirect application to other related technical fields, are also included in the scope of the present invention.

In addition, in the description of the foregoing embodiments, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention. In addition, the present invention may be identified by the same or different reference numerals for structural elements having the same or similar characteristics. 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 features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Claims

1. An electric steam iron, comprising:

a housing;

2. The electric steam iron of claim 1, wherein the water containing tank is a cylinder, the bottom surface of the water containing tank faces the soleplate, and the heating thick film is attached to the bottom surface of the water containing tank.

3. An electric steam iron as claimed in claim 1, wherein said plurality of steam vents are arranged along an edge of said soleplate, and said water reservoir is secured to said soleplate in an area defined by said plurality of steam vents.

4. An electric steam iron as claimed in claim 1, wherein the bottom surface of the water holding tank is in heat conducting contact with a soleplate, the soleplate being a metal heat conducting plate.

5. An electric steam iron as recited in claim 1, wherein said first and second heat-generating coils are respectively circumferentially disposed along a shape of a wall of said water containing tank.

6. The electric steam iron of claim 1, wherein the heating thick film further comprises a plurality of conductive pads for connection to a power source, the conductive pads being connected to both ends of the first heat-generating coil and both ends of the second heat-generating coil, respectively.

7. An electric steam iron as recited in claim 6, wherein one end of said first heat-generating coil and one end of said second heat-generating coil are disposed adjacent to each other and both connected to a first electrically conductive pad, the other end of said first heat-generating coil is connected to a second electrically conductive pad, and the other end of said second heat-generating coil is connected to a third electrically conductive pad.

8. The steam iron of claim 6, wherein the heated thick film further comprises a temperature controller in communication with the power source, the plurality of electrically conductive pads comprising a fourth electrically conductive pad, the temperature controller being plugged into the fourth electrically conductive pad.

9. The electric steam iron of claim 1, wherein the heated thick film further comprises a substrate base material, the first and second heat-generating coils being disposed on the substrate base material, the substrate base material being provided with a first groove and a second groove, the first heat-generating coil being disposed in the first groove, the second heat-generating coil being disposed in the second groove.

10. An electric steam iron as recited in claim 9, wherein the tops of the first and second heat generating coils are lower than or flush with the surface of the substrate base material.