CN216705207U - Thick film heater and steam generating equipment - Google Patents
Thick film heater and steam generating equipment Download PDFInfo
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- CN216705207U CN216705207U CN202121416632.8U CN202121416632U CN216705207U CN 216705207 U CN216705207 U CN 216705207U CN 202121416632 U CN202121416632 U CN 202121416632U CN 216705207 U CN216705207 U CN 216705207U
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Abstract
The utility model relates to a thick film heater and a steam generating device.A first electric heating element and a second electric heating element with two different resistance values are arranged on a substrate. When the thick film heater is in a first working mode, the first electric heating piece is connected with a first voltage, and the second electric heating piece is disconnected and does not work; when the thick film heater is in a second working mode, the second electric heating piece is connected with a second voltage, and the first electric heating piece is disconnected and does not work. Therefore, the first electric heating element and the second electric heating element can be respectively connected with different voltages correspondingly, and the first electric heating element and the second electric heating element do not work simultaneously, so that when different power outputs are needed, the first voltage or the second voltage is selected to be connected, each loop works independently, and the loop structures under different powers are guaranteed to be more concise and ordered. Compared with the traditional coated electric heating tube, the thick film heater adopts a direct heating mode with double heating channels, and has higher thermal efficiency.
Description
Technical Field
The utility model relates to the technical field of electric heating, in particular to a thick film heater and steam generating equipment.
Background
The thick film heater includes a substrate and a resistance heating portion formed thereon, and during the manufacturing process, a superconducting ceramic material fine powder and an organic binder solvent are usually mixed into a paste-like paste, and the paste is printed on the substrate in the form of circuit wiring or pattern by a stencil printing technique. When the device works, water in the flow channel is heated by resistance heating to obtain steam or hot water.
In order to obtain different heating powers, when the resistive heating parts are designed, the conventional thick film heater usually adopts a thermosensitive control device to short circuit or interconnect the heating parts so as to adjust the power output of the heating parts. However, the structure design of the resistance heating part is more complicated; meanwhile, the output power deviation is large in the power adjusting process.
SUMMERY OF THE UTILITY MODEL
Accordingly, there is a need for a thick film heater and a steam generating apparatus, each circuit operates independently at different power outputs, and the thick film heater and the steam generating apparatus have simple structure and high thermal efficiency; meanwhile, the output power precision is higher.
A thick film heater having a first mode of operation and a second mode of operation, said thick film heater comprising: a substrate; the first electric heating element and the second electric heating element are arranged on the substrate at intervals, the resistance value of the first electric heating element is different from that of the second electric heating element, the first electric heating element is used for electrically accessing a first voltage when in a first working mode, the second electric heating element is in a circuit-breaking state, the second electric heating element is used for electrically accessing a second voltage when in a second working mode, the first electric heating element is in a circuit-breaking state, and the first voltage is smaller than the second voltage.
In the thick film heater, the substrate is provided with the first electric heating element and the second electric heating element with two different resistance values. When the thick film heater is in a first working mode, the first electric heating piece is connected with a first voltage, and the second electric heating piece is disconnected and does not work; when the thick film heater is in a second working mode, the second electric heating element is connected to a first voltage, and the first electric heating element does not work when being disconnected. Therefore, the first electric heating element and the second electric heating element can be respectively connected with different voltages correspondingly, and the first electric heating element and the second electric heating element do not work simultaneously, so that when different power outputs are needed, the first voltage or the second voltage is selected to be connected, each loop works independently, and the loop structures under different powers are guaranteed to be more concise and ordered. Compared with the traditional coated electric heating tube, the thick film heater adopts a direct heating mode with double heating channels, and has higher thermal efficiency. In addition, when different powers are output, the first electric heating element and the second electric heating element work independently and asynchronously, so that the resistance value utilized under different powers is the resistance value of the first electric heating element or the second electric heating element, but not the resistance value after mutual combination, and the amplified precision difference of each electric heating element in combination is effectively prevented, thereby effectively reducing the influence on the output power and improving the output of different power precisions.
In one embodiment, the first electrothermal elements and the second electrothermal elements are both disposed along the surface of the substrate in an extending manner, and the first electrothermal elements and the second electrothermal elements are alternately arranged.
In one embodiment, the first and second electric heating elements are wound around the center of the substrate and extend layer by layer along a direction from the center of the substrate to the edge of the substrate, and the annular structures formed by the first electric heating elements and the annular structures formed by the second electric heating elements are alternately sleeved and arranged.
In one embodiment, the annular structure formed by the first electric heating element comprises a first open ring, a second open ring and a third open ring which are sequentially sleeved from inside to outside, the openings of the first open ring, the second open ring and the third open ring are all oppositely arranged, one end of the second open ring is connected with one end of the first open ring, and the other end of the second open ring is connected with one end of the third open ring; the second electric heating element forms an annular structure which comprises a fourth split ring, a fifth split ring, a sixth split ring and a seventh split ring which are sequentially sleeved from inside to outside, the fourth split ring and the fifth split ring are both positioned between the first split ring and the second split ring, the sixth split ring and the seventh split ring are both sleeved outside the fourth split ring, one end of the fifth split ring is connected with one end of the fourth split ring, the other end of the fifth split ring is connected with one end of the sixth split ring, and the other end of the sixth split ring is communicated with one end of the seventh split ring.
In one embodiment, the creepage distance of the first electric heating element on the substrate, the creepage distance of the second electric heating element on the substrate and the creepage distance between the first electric heating element and the second electric heating element are all greater than or equal to 3.2 mm.
In one embodiment, a common terminal is disposed on the substrate, and one end of the first electric heating element and one end of the second electric heating element are both electrically connected to the common terminal.
In one embodiment, the thick film heater further comprises a wire holder, and the first electric heating element and the second electric heating element are respectively used for being correspondingly connected with direct current and alternating current through the wire holder.
In one embodiment, the wire holder is provided with a first wire terminal, a second wire terminal and a third wire terminal, one end of the first electric heating element and one end of the second electric heating element are both connected to the first wire terminal, the other end of the first electric heating element is connected to the second wire terminal, and the other end of the second electric heating element is connected to the third wire terminal.
In one embodiment, the thick film heater further comprises a fuse module, and the first and second electrothermal elements are electrically connected to the fuse module.
In one embodiment, the thick film heater further comprises a temperature controller for controlling the operating temperature of the thick film heater.
The utility model provides a steam generation equipment, steam generation equipment includes upper cover, the ware body and above arbitrary one the thick film heater, the ware body install in on the base plate, the upper cover install in on the ware body, the ware body orientation be equipped with first runner on the side of base plate, the ware body orientation be equipped with the second runner on the side of upper cover, still be equipped with the confession on the ware body first runner with the first venthole of second runner intercommunication, the upper cover is equipped with inlet opening and second venthole, the inlet opening with first runner intercommunication, the second venthole with second runner intercommunication.
The steam generating equipment adopts the thick film heater, and the substrate is provided with the first electric heating element and the second electric heating element with two different resistance values. When the thick film heater is in a first working mode, the first electric heating piece is connected with a first voltage, and the second electric heating piece is disconnected and does not work; when the thick film heater is in a second working mode, the second electric heating piece is connected with a second voltage, and the first electric heating piece is disconnected and does not work. At the moment, water enters the first flow channel from the water inlet hole of the upper cover, exchanges heat with the first electric heating piece or the second electric heating piece, and is heated by liquid of the first electric heating piece or the second electric heating piece to become gas; the gas flows into the second flow channel from the first gas outlet hole; then flows into the second air outlet hole from the second flow channel and is discharged for use.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.
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 introduced 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 based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a thick film heater configuration according to one embodiment;
FIG. 2 is a first schematic structural diagram of a steam generating apparatus according to an embodiment;
FIG. 3 is a schematic view of a steam generating apparatus according to an embodiment;
FIG. 4 is a sectional view showing the structure of a steam generating apparatus according to an embodiment;
FIG. 5 is a first diagram illustrating the structure of the device according to an embodiment;
fig. 6 is a schematic diagram of a second exemplary embodiment of the device body.
100. A thick film heater; 110. a substrate; 120. a first electric heating member; 121. a first split ring; 122. a second split ring; 123. a third split ring; 124. a first connection section; 125. a second connection section; 130. a second electric heating element; 131. a fourth split ring; 132. a fifth split ring; 133. a sixth split ring; 134. a seventh split ring; 135. a third connection section; 136. a fourth connection section; 137. a fifth connection section; 140. a common terminal; 150. a wire holder; 151. a first terminal post; 152. a second terminal; 153. a third terminal; 154. a protective sleeve; 160. a temperature controller; 161. a support; 170. an insurance module; 200. a body; 210. a first flow passage; 220. a second flow passage; 230. a first air outlet hole; 240. a partition plate; 250. a spacer ring; 251. a communication port; 300. an upper cover; 310. a water inlet hole; 320. and a second air outlet.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In one embodiment, referring to fig. 1, a thick film heater 100 having a first operating mode and a second operating mode, the thick film heater 100 comprises: a substrate 110, a first heater 120 and a second heater 130. The first electric heating element 120 and the second electric heating element 130 are disposed on the substrate 110 at an interval, and the resistance value of the first electric heating element 120 is different from the resistance value of the second electric heating element 130. In the first operation mode, the first electric heating element 120 is used for electrically connecting to a first voltage, and the second electric heating element 130 is in a broken state, and in the second operation mode, the second electric heating element 130 is used for electrically connecting to a second voltage, and the first electric heating element 120 is in a broken state. The first voltage is less than the second voltage.
In the thick film heater 100, the first electric heating element 120 and the second electric heating element 130 with two different resistance values are disposed on the substrate 110. When the thick film heater 100 is in the first working mode, the first electric heating element 120 is connected to the first voltage, and the second electric heating element 130 is disconnected and does not work; when the thick film heater 100 is in the second operation mode, the second electric heating element 130 is connected to the second voltage, and the first electric heating element 120 is disconnected and does not work. Therefore, the first electric heating element 120 and the second electric heating element 130 can be correspondingly connected with different voltages respectively, and the first electric heating element 120 and the second electric heating element 130 do not work simultaneously, so that when different power outputs are needed, the first voltage or the second voltage is selected to be connected, each loop works independently, and the loop structures under different powers are simpler and more orderly. Meanwhile, compared with the traditional coated electric heating tube, the thick film heater 100 adopts a direct heating mode with double heating channels, and has higher thermal efficiency (the thermal efficiency is as high as 95%). In addition, when different powers are output, the first electric heating element 120 and the second electric heating element 130 work independently and non-simultaneously, so that the resistance value utilized under different powers is the resistance value of the first electric heating element 120 or the second electric heating element 130, but not the resistance value after mutual combination, thereby effectively preventing the amplification precision difference when each electric heating element is combined, further effectively reducing the influence on the output power and improving the output of different power precisions.
It should be noted that the difference between the resistance value of the first electric heating element 120 and the resistance value of the second electric heating element 130 is to be understood as: the resistance of the first electric heating element 120 is different from the resistance of the second electric heating element 130, i.e. the resistance of the first electric heating element 120 can be larger than the resistance of the second electric heating element 130 or smaller than the resistance of the second electric heating element 130.
Meanwhile, in order to realize the first voltage and the second voltage with different voltage values, direct current and alternating current can be selected to be introduced into the thick film heater. In the process of power transmission, the ac power transmission mode is adopted to reduce power loss and ensure that the terminal product has a higher voltage, so that when high power needs to be output (for example, kitchen steam cleaning products under heavy working conditions), the ac current (i.e., the second voltage) is connected to the second electric heating element 130, so that the thick film heater 100 outputs a higher thermal power in a high voltage mode. When a small power (such as a steam cleaning product inside a car, a steam mop, etc.) needs to be output, a direct current (i.e., a first voltage) can be connected to the first electrothermal element 120 to realize a small thermal power output in a low voltage mode.
Specifically, the effective voltage value of the alternating current is 120V or 220V, and the voltage value of the direct current is 18V. Meanwhile, the length of the first electric heating member 120 is 280.5mm, the width is 3.0mm, and the resistance value is 0.78 Ω (tested at 25 ℃); the second electric heating member 130 has a length of 475mm, a width of 2.2mm, and a resistance value of 20 Ω (measured at 25 ℃). In addition, the AC/DC power density of the thick film heater 100 should be controlled to 60W/cm on the premise of satisfying the power demand of the user2The following.
It should be further noted that the substrate 110 has various shapes, such as: the substrate 110 has a circular, elliptical, square, pentagonal, or the like outer shape. When the outer shape of the substrate 110 is circular, in order to reduce loss of thermal efficiency, the diameter of the substrate 110 is 60mm at most, and the maximum current value applied to the first electric heating element 120 or the second electric heating element 130 is 20A.
Further, referring to fig. 1, the first electrothermal elements 120 and the second electrothermal elements 130 are disposed along the surface of the substrate 110, and the first electrothermal elements 120 and the second electrothermal elements 130 are alternately arranged. Therefore, the first electric heating elements 120 and the second electric heating elements 130 are alternately arranged on the substrate 110, which is beneficial for the first electric heating elements 120 and the second electric heating elements 130 to be distributed on the surface of the substrate 110, so that the fluid to be heated is heated more uniformly.
It should be noted that the first electric heating element 120 and the second electric heating element 130 are arranged on the substrate 110 in various ways, such as: the first and second electric heating elements 120 and 130 may be arranged on the substrate 110 in a winding manner, a serpentine manner, a zigzag manner, or the like. Wherein, the alternating arrangement of the first electric heating element 120 and the second electric heating element 130 is understood as: in the arrangement process, a portion of the first heating element 120 and a portion of the second heating element 130 are alternately spaced apart on the substrate 110 along a certain direction.
Furthermore, referring to fig. 1, the first electrothermal element 120 and the second electrothermal element 130 are wound around the center of the substrate 110 and extend layer by layer along a direction from the center of the substrate 110 to the edge of the substrate 110. The annular structure formed by the first electric heating element 120 and the annular structure formed by the second electric heating element 130 are alternately sleeved and arranged. The first electric heating element 120 and the second electric heating element 130 of the present embodiment are arranged on the substrate 110 at intervals in a ring shape, so that the first electric heating element 120 and the second electric heating element 130 are better laid on the substrate 110, so as to improve the heating effect of the fluid to be heated. Wherein, the ring structure can be a closed ring or an open ring. In addition, the shape of the ring structure can be various, such as circular, oval, square, etc.
It should be noted that, when the first electric heating element 120 or the second electric heating element 130 is coiled on the substrate 110, the first electric heating element or the second electric heating element can be gradually coiled in the same direction (for example, clockwise or counterclockwise); or the coil can be coiled for a circle along the clockwise direction firstly and then coiled for a circle along the anticlockwise direction, and the above steps are repeated in a circulating way.
In one embodiment, referring to fig. 1, the ring-shaped structure formed by the first electric heating element 120 includes a first open ring 121, a second open ring 122 and a third open ring 123 which are sequentially sleeved from inside to outside. The apertures of the first split ring 121, the second split ring 122, and the third split ring 123 are all disposed opposite one another. One end of the second split ring 122 is connected to one end of the first split ring 121, and the other end of the second split ring 122 is connected to one end of the third split ring 123. That is, the first electrothermal elements 120 are arranged around the center of the substrate 110 and are first coiled in one direction for one circle; then, coiling the steel wire in the opposite direction for one circle again; finally, the coil is wound again in the opposite direction to the previous coil. Specifically, in this embodiment, one end of the second split ring 122 is connected to one end of the first split ring 121 through a first connecting section 124, and the other end of the second split ring 122 is connected to one end of the third split ring 123 through a second connecting section 125. The first connecting section 124 and the second connecting section 125 are respectively located at two opposite sides of the opening of the first split ring 121.
With continued reference to fig. 1, the second electric heating element 130 forms a ring structure including a fourth open ring 131, a fifth open ring 132, a sixth open ring 133 and a seventh open ring 134, which are sequentially sleeved from inside to outside. The fourth split ring 131 and the fifth split ring 132 are both located between the first split ring 121 and the second split ring 122. The sixth opening ring 133 and the seventh opening ring 134 are both sleeved outside the fourth opening ring 131. One end of the fifth split ring 132 is connected to one end of the fourth split ring 131. The other end of the fifth split ring 132 is connected to one end of the sixth split ring 133. The other end of the sixth open ring 133 communicates with one end of the seventh open ring 134. Similarly, the arrangement of the second electric heating element 130 can refer to the arrangement of the first electric heating element 120. Meanwhile, the second electric heating elements 130 need to be matched with the first electric heating elements 120 when being arranged, so that the annular structures formed by the first electric heating elements 120 and the annular structures formed by the second electric heating elements 130 are alternately arranged. Specifically, in the present embodiment, one end of the fifth split ring 132 is connected to one end of the fourth split ring 131 through the third connecting section 135. The other end of the fifth split ring 132 is connected to one end of the sixth split ring 133 by a fourth connecting section 136. The other end of the sixth open ring 133 is communicated with one end of the seventh open ring 134 through a fifth connecting section 137. And the third connecting section 135 and the fourth connecting section 136 are respectively located at two opposite sides of the opening of the fifth split ring 132.
In one embodiment, referring to fig. 1, the creepage distance of the first electric heating element 120 on the substrate 110, the creepage distance of the second electric heating element 130 on the substrate 110, and the creepage distance between the first electric heating element 120 and the second electric heating element 130 are all greater than or equal to 3.2mm, so that the first electric heating element 120 and the second electric heating element 130 operate stably, the occurrence of electric polarization due to too close distance is avoided, and the electric safety of the thick film heater 100 is improved.
In one embodiment, referring to fig. 1, the substrate 110 is provided with a common terminal 140. One end of the first electric heating element 120 and one end of the second electric heating element 130 are both electrically connected to the common terminal 140, so that the common terminal 140 is utilized to electrically connect the first electric heating element 120 and the second electric heating element 130 to a common terminal, thereby reducing the number of terminals and facilitating the wiring operation.
It should be noted that the common terminal 140 can be used as a common terminal for both ac and dc currents during the wiring process.
In one embodiment, referring to fig. 2, the thick film heater 100 further includes a wire holder 150. The first electric heating element 120 and the second electric heating element 130 are respectively used for being correspondingly connected with direct current and alternating current through the wire holder 150. In this way, the user can conveniently perform the wiring operation on the first electric heating element 120 and the second electric heating element 130.
When selecting the material of the wire holder 150, the temperature resistance of the wire holder 150 should be considered, for example: the wire holder 150 is made of ceramic material.
Further, referring to fig. 3, the wire holder 150 is provided with a first wire terminal 151, a second wire terminal 152 and a third wire terminal 153. One end of the first electric heating element 120 and one end of the second electric heating element 130 are both connected to the first terminal 151. The other end of the first electric heating element 120 is connected to the second terminal 152. The other end of the second electric heating element 130 is connected to the third terminal 153, so that the ac and dc are correspondingly connected to the first electric heating element 120 and the second electric heating element 130 through the first terminal 151, the second terminal 152 and the third terminal 153.
Specifically, a direct current is connected between the first terminal 151 and the second terminal 152, and an alternating current is connected between the first terminal 151 and the third terminal 153.
Further, referring to fig. 3, the first terminal 151, the second terminal 152 and the third terminal 153 are all sleeved with a protective sheath 154, for example: the protective sheath 154 is a silica gel sheath made of 20A current high temperature resistant material.
In one embodiment, referring to fig. 2, the thick film heater 100 further comprises a fuse module 170. The first electric heating element 120 and the second electric heating element 130 are electrically connected to the safety module 170 to protect each circuit from safe and stable operation.
In one embodiment, referring to fig. 2, the thick film heater 100 further includes a temperature controller 160. The temperature controller 160 is used to control the operating temperature of the thick film heater 100.
Further, referring to fig. 2, the thermostat 160 is mounted on a side of the substrate 110 opposite to the first and second electric heating elements 120 and 130 by a bracket 161.
In one embodiment, referring to fig. 4, a steam generating device includes a cover 300, a body 200 and the thick film heater 100 of any of the above embodiments. The body 200 is mounted on the substrate 110. The upper cover 300 is mounted on the container body 200. A first flow channel 210 is disposed on a side surface of the base plate 110 facing the base plate 200, a second flow channel 220 is disposed on a side surface of the base plate 200 facing the upper cover 300, and a first air outlet 230 for communicating the first flow channel 210 and the second flow channel 220 is disposed on the base plate 200. The upper cover 300 is provided with a water inlet 310 and a second air outlet 320. The inlet opening 310 communicates with the first flow path 210, and the second outlet opening 320 communicates with the second flow path 220.
In the steam generating device, the thick film heater 100 is adopted, and the first electric heating element 120 and the second electric heating element 130 with two different resistance values are arranged on the substrate 110. When the thick film heater 100 is in the first working mode, the first electric heating element 120 is connected to the first voltage, and the second electric heating element 130 is disconnected and does not work; when the thick film heater 100 is in the second operation mode, the second electric heating element 130 is connected to the second voltage, and the first electric heating element 120 is disconnected and does not work. At this time, water enters the first flow channel 210 from the water inlet 310 of the upper cover 300, exchanges heat with the first electric heating element 120 or the second electric heating element 130, and is heated by liquid thereof to become gas; the gas flows into the second flow channel 220 through the first gas outlet 230; and then flows from the second flow channel 220 to the second outlet hole 320 and is discharged for use.
Further, referring to fig. 6, the inner wall of the second flow channel 220 is provided with a partition 240. The first outlet hole 230 and the second outlet hole 320 are respectively located at two opposite sides of the partition 240. A gap is left between the partition 240 and the upper cover 300 for the gas flowing out from the first gas outlet 230 to pass through, so as to separate the liquid in the gas and ensure that the humidity of the gas flowing into the second gas outlet 320 is low.
It should be noted that the gap between the partition 240 and the upper cover 300 may be determined according to the actual product size, and is not particularly limited herein.
In one embodiment, referring to fig. 5, a plurality of spacer rings 250 are disposed on a side of the device body 200 facing the substrate 110. The separating rings 250 extend around the center of the device body 200, the separating rings 250 are provided with communicating ports 251, and the communicating ports 251 on two adjacent separating rings 250 are distributed in a staggered manner. A first flow passage 210 is formed between two adjacent separating rings 250 and the body 200.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the utility model.
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 to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited 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 or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.
Claims (10)
1. A thick film heater having a first mode of operation and a second mode of operation, said thick film heater comprising:
a substrate;
the first electric heating element and the second electric heating element are arranged on the substrate at intervals, the resistance value of the first electric heating element is different from that of the second electric heating element, the first electric heating element is used for electrically accessing a first voltage when in a first working mode, the second electric heating element is in a circuit-breaking state, the second electric heating element is used for electrically accessing a second voltage when in a second working mode, the first electric heating element is in a circuit-breaking state, and the first voltage is smaller than the second voltage.
2. The thick film heater of claim 1, wherein the first and second electrically heated members each extend along a surface of the substrate, and the first and second electrically heated members alternate.
3. The heater of claim 2, wherein the first and second electric heating elements are wound around the center of the substrate and extend in a layer-by-layer manner along a direction from the center of the substrate to the edge of the substrate, and the ring-shaped structures of the first electric heating elements and the ring-shaped structures of the second electric heating elements are alternately arranged in a sleeved manner.
4. The thick film heater of claim 3, wherein the annular structure formed by the first electric heating element comprises a first open ring, a second open ring and a third open ring which are sequentially sleeved from inside to outside, the openings of the first open ring, the second open ring and the third open ring are all oppositely arranged, one end of the second open ring is connected with one end of the first open ring, and the other end of the second open ring is connected with one end of the third open ring;
the second electric heating element forms an annular structure which comprises a fourth split ring, a fifth split ring, a sixth split ring and a seventh split ring which are sequentially sleeved from inside to outside, the fourth split ring and the fifth split ring are both positioned between the first split ring and the second split ring, the sixth split ring and the seventh split ring are both sleeved outside the fourth split ring, one end of the fifth split ring is connected with one end of the fourth split ring, the other end of the fifth split ring is connected with one end of the sixth split ring, and the other end of the sixth split ring is communicated with one end of the seventh split ring.
5. The thick film heater of claim 1, wherein a creepage distance for routing of said first electrically heated member on said substrate, a creepage distance for routing of said second electrically heated member on said substrate, and a creepage distance between said first electrically heated member and said second electrically heated member are each greater than or equal to 3.2 mm.
6. The thick film heater of claim 1, wherein a common terminal is disposed on said substrate, and one end of said first electrical heating element and one end of said second electrical heating element are electrically connected to said common terminal.
7. The thick film heater of any one of claims 1 to 6, further comprising a wire holder through which each of said first and second electrical heating elements is adapted to be connected to a respective one of a direct current and an alternating current.
8. The thick film heater of claim 7, wherein the wire holder is provided with a first terminal, a second terminal and a third terminal, one end of the first electric heating element and one end of the second electric heating element are both connected to the first terminal, the other end of the first electric heating element is connected to the second terminal, and the other end of the second electric heating element is connected to the third terminal.
9. The thick film heater of any one of claims 1-6, further comprising a safety module, wherein the first and second electrothermal elements are electrically connected to the safety module; and/or the presence of a gas in the atmosphere,
the thick film heater further comprises a temperature controller, wherein the temperature controller is used for controlling the working temperature of the thick film heater.
10. A steam generating device, comprising a top cover, a body and a thick film heater according to any one of claims 1 to 9, wherein the body is mounted on the substrate, the top cover is mounted on the body, a first flow channel is provided on a side of the body facing the substrate, a second flow channel is provided on a side of the body facing the top cover, a first air outlet for communicating the first flow channel with the second flow channel is further provided on the body, a water inlet and a second air outlet are provided on the top cover, the water inlet is communicated with the first flow channel, and the second air outlet is communicated with the second flow channel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| PCT/CN2021/121525 WO2022068840A1 (en) | 2020-09-30 | 2021-09-29 | Steam device, method for controlling steam device, and steam cleaner |
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| CN202122306878.6U Active CN216262266U (en) | 2020-09-30 | 2021-09-23 | Steam cleaning machine |
| CN202111147483.4A Active CN114308799B (en) | 2020-09-30 | 2021-09-29 | Steam appliance, control method of steam appliance and steam cleaner |
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| CN115381334A (en) * | 2022-08-25 | 2022-11-25 | 安克创新科技股份有限公司 | Cleaning device and steam control method thereof |
| CN219500927U (en) * | 2022-09-23 | 2023-08-11 | 苏州宝时得电动工具有限公司 | Hand-held steam cleaning device |
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| BR9406592A (en) * | 1993-05-10 | 1996-01-30 | Singer Co Nv | Steam ironing press |
| JP2003052134A (en) * | 2001-08-07 | 2003-02-21 | Mitsubishi Electric Corp | Control method for uninterruptible power supply apparatus, and the uninterruptible power supply apparatus employing the method |
| TWM240277U (en) * | 2003-07-21 | 2004-08-11 | Tse Ken Electronic Co Ltd | Steam adjustment of steam cleaning machine |
| JP5780074B2 (en) * | 2011-09-09 | 2015-09-16 | ダイキン工業株式会社 | Switching power supply circuit control device and heat pump unit |
| CN102589120A (en) * | 2011-11-22 | 2012-07-18 | 戴利杰 | Foot bath device |
| JP2013158657A (en) * | 2012-02-01 | 2013-08-19 | Sharp Corp | Active species generation device, air cleaning device, sewage purification device, and steam cleaner |
| CN104550074B (en) * | 2014-04-01 | 2017-05-17 | 盘锦森达鑫石油技术有限公司 | Full-automatic electric heating steam washing device |
| EP3009060B1 (en) * | 2014-10-17 | 2017-04-26 | Black & Decker Inc. | Steam cleaning device |
| CN205496128U (en) * | 2016-03-04 | 2016-08-24 | 佛山市顺德区顺佳利电器有限公司 | Frequency conversion steam washing device |
| CN107238067B (en) * | 2016-03-28 | 2019-03-22 | 佛山市顺德区美的电热电器制造有限公司 | Steam generator control method, system and Garment Steamer Machine |
| CN107176143A (en) * | 2017-06-09 | 2017-09-19 | 青岛理工大学 | A kind of Novel steam car washer |
| CN207277038U (en) * | 2017-08-31 | 2018-04-27 | 广东顺德布神乐电气有限公司 | Hand-held ironer |
| CN108401309A (en) * | 2018-05-10 | 2018-08-14 | 东莞市可乐狗电子科技有限公司 | A kind of multivoltage applicable thick film heat-generating disc |
| CN208643462U (en) * | 2018-08-15 | 2019-03-26 | 黄永华 | Household electrical appliances steam cleaner |
| CN110560407B (en) * | 2019-09-19 | 2021-07-30 | 上海奇佳电子有限公司 | Cleaning machine system |
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| CN114308799A (en) | 2022-04-12 |
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