WO2022068840A1 - Dispositif à vapeur, procédé de commande du dispositif à vapeur et nettoyeur à vapeur - Google Patents

Dispositif à vapeur, procédé de commande du dispositif à vapeur et nettoyeur à vapeur Download PDF

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Publication number
WO2022068840A1
WO2022068840A1 PCT/CN2021/121525 CN2021121525W WO2022068840A1 WO 2022068840 A1 WO2022068840 A1 WO 2022068840A1 CN 2021121525 W CN2021121525 W CN 2021121525W WO 2022068840 A1 WO2022068840 A1 WO 2022068840A1
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WO
WIPO (PCT)
Prior art keywords
water pump
power supply
heating body
voltage
steam
Prior art date
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PCT/CN2021/121525
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English (en)
Chinese (zh)
Inventor
查霞红
吉绍山
李中仲
张凯翔
张健康
Original Assignee
苏州宝时得电动工具有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from CN202121416632.8U external-priority patent/CN216705207U/zh
Application filed by 苏州宝时得电动工具有限公司 filed Critical 苏州宝时得电动工具有限公司
Publication of WO2022068840A1 publication Critical patent/WO2022068840A1/fr

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/20—Mops
    • A47L13/22—Mops with liquid-feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details

Definitions

  • the invention provides a steam device, a control method of the steam device and a steam cleaner.
  • Hand-held steam cleaning equipment is widely used due to its safety and environmental protection.
  • the more common type is hand-held steam cleaning equipment, such as hand-held steam cleaners.
  • Hand-held steam cleaners are mostly used to clean kitchens, bathrooms and other places with a lot of dirt.
  • heating body that can heat liquid under various working conditions indoors and outdoors to produce steam
  • there are usually different forms such as heating tube, resistance heater, etc.
  • the traditional heating body is large in size, resulting in clean steam.
  • the body is bulky, therefore, the traditional heating body has no advantage in heating efficiency.
  • a thermal control device is usually used to short circuit or interconnect each heating part to adjust the power output of the heating part.
  • the structure design of the heating part of the resistor is relatively complicated; meanwhile, the output power deviation is large during the power adjustment process.
  • the technical problem to be solved by the present invention is to provide a steam device and a steam cleaning machine, which supports heating liquid to generate steam in two modes of AC power supply and DC power supply, and the use environment is not limited, and can be used normally indoors and outdoors.
  • the present invention provides a steam device, comprising:
  • the casing includes a liquid inlet and a steam outlet, and a cavity for accommodating the liquid is formed in the casing;
  • heating body which is used for receiving the electric energy of the power supply end to generate heat, heating and vaporizing the liquid in the cavity into steam, and the heating body includes at least one set of heating circuits;
  • the power supply terminal includes an AC power supply terminal and a DC power supply terminal, and the AC power supply connected with the AC power supply terminal and the DC power supply connected with the DC power supply terminal can independently heat and vaporize the liquid entering from the liquid inlet. steam.
  • the heating body includes a first heating loop and a second heating loop, the first heating loop is connected to the power supply terminal of the AC power supply, and the second heating loop is connected to the power supply terminal of the DC power supply.
  • the heating body is configured as a thick film heating body, and the thick film heating body adopts a thick film resistor technology to form a thick film heating circuit on the substrate.
  • the thick film heating circuit includes an AC heating circuit and a DC heating circuit.
  • the AC power is supplied, only the AC heating circuit works; when the DC power is supplied, only the DC heating circuit works.
  • the AC heating circuit includes a first electric heating element
  • the DC heating circuit includes a second electric heating element
  • the first electric heating element and the second electric heating element are both extended along the surface of the substrate, and the The first electric heating elements and the second electric heating elements are alternately arranged.
  • the present invention also provides a steam cleaning machine, which includes the above steam equipment, and also includes a pump and a water tank disposed outside the casing, and the pump is used to receive electrical energy from the AC power supply end or the DC power supply end , pump the liquid in the water tank into the cavity.
  • the purpose of the present invention is to provide another steam device, a control method of the steam device and a steam cleaner.
  • an embodiment of the present invention provides a control method for a steam appliance, the method comprising: detecting a power supply type of a power supply terminal, and outputting a type signal;
  • the power supply type of the power supply terminal is direct current
  • the voltage across the heating body and the water pump is controlled to be constant.
  • the heating body and the water pump are controlled to work according to the control logic that the power supply type is alternating current.
  • the detecting the power supply type of the power supply terminal and outputting the type signal includes:
  • the type signal representing the AC power input is output; when the DC power supply input is detected and the AC power input is not detected, the type signal representing the DC power input is output; when the AC power input is detected When the power supply input and the DC power supply input are used, the output represents the type signal of the alternating current and direct current input at the same time.
  • detecting the temperature of the heating body and outputting the temperature signal includes: detecting the temperature of multiple regions of the heating body, and outputting the temperature signals of the multiple regions respectively.
  • controlling the start and stop of the heating body, and controlling the work of the water pump include:
  • the water pump When the temperature of the heating body is higher than the water pump starting temperature threshold, the water pump is controlled to start working; when the temperature of the heating body is lower than the water pump starting temperature threshold, the water pump is controlled to stop working; When the temperature is higher than the heating stop temperature threshold, the heating body is controlled to stop working; when the temperature of the heating body is lower than the heating start temperature threshold, the heating body is controlled to resume work.
  • the step of controlling the start-up operation of the water pump includes: controlling the water pump to start the operation after delaying the water pump for a preset time.
  • controlling the starting operation of the water pump includes: controlling the water output of the water pump.
  • the method for controlling the water output of the water pump at least includes: controlling the intermittent operation of the water pump or adjusting the rotational speed of the water pump motor; the method of controlling the intermittent operation of the water pump The steps include: controlling the water pump to stop running for a preset pause time every time it starts to work and runs for a preset running time.
  • controlling the intermittent operation of the water pump further includes: after the water pump starts to work and runs for a first preset running time, stopping the operation for the first pause time every time the water pump starts to work and runs for the first time 2. After the preset running duration, stop running for the second pause duration;
  • the first preset running duration is greater than the second preset running duration.
  • control to start the water pump further includes:
  • the preset value of the first water pump voltage is not lower than the preset value of the second water pump voltage.
  • controlling the start and stop of the heating body, and controlling the operation of the water pump include:
  • the control is to preferentially use the alternating current to supply power to the steam device; and the alternating current is controlled to selectively charge the direct current.
  • an embodiment of the present invention provides a steam device, including:
  • the power supply detection module is used to detect the power supply type of the power supply end and output the type signal
  • the temperature protection module is used to detect the temperature of the heating body and output the temperature signal
  • the main control module is used to control the start and stop of the heating body and control the operation of the water pump according to the type signal and the temperature signal;
  • the main control module adjusts the voltage across the heating body and the voltage across the water pump according to a preset mode based on the electrical parameters of the direct current;
  • the main control module controls the voltage across the heating body and the water pump to be constant.
  • the main control module controls the heating body and the water pump to work according to the control logic that the power supply type is alternating current.
  • the power supply detection module detects the power supply type of the power supply end, and outputs the type signal including:
  • the power supply detection module When an AC power supply input is detected and a DC power supply input is not detected, the power supply detection module outputs a type signal representing the AC power input; when a DC power supply input is detected and an AC power supply input is not detected, the power supply detection module outputs a representative Type signal of DC power input; when AC power supply input and DC power supply input are detected, the power supply detection module outputs a type signal representing the simultaneous input of AC power and DC power.
  • the temperature protection module at least includes: a first thermistor and a second thermistor, the first thermistor is arranged near the water inlet of the heating body, the The second thermistor is arranged near the steam outlet of the heating body; the first thermistor and the second thermistor detect temperatures in different regions of the heating body and output temperature signals.
  • the main control module controls the heating body to stop working; when the temperature of the heating body is lower than the heating start temperature When the threshold value is reached, the main control module controls the heating body to resume work.
  • the work of the water pump controlled by the main control module also includes:
  • the main control module controls the water pump to start working; when the heating body temperature is lower than the water pump startup temperature threshold, the main control module controls the water pump The water pump stops working;
  • the main control module is configured to control the water pump to start working after delaying the water pump for a preset time.
  • the main control module is used to control the water output of the water pump.
  • the way for the main control module to control the water output of the water pump at least includes: controlling the intermittent operation of the water pump or adjusting the rotational speed of the water pump motor; controlling the water pump intermittently
  • the work includes, every time the water pump starts to work and runs for a preset running time, stop running for a preset pause time.
  • the intermittent operation of the water pump controlled by the main control module further includes:
  • the first preset running duration is greater than the second preset running duration.
  • the main control module adjusts the voltage to make the heating body work at the first voltage preset value, and controls the water pump to preset the first water pump voltage. set value work;
  • the main control module controls the heating body to work with the direct current voltage, and the water pump works with the second water pump voltage preset value; the first The water pump voltage preset value is not lower than the second water pump voltage preset value.
  • the work of the main control module controlling the water pump includes:
  • the control module controls to preferentially use the alternating current to supply power to the steam device; the control module controls the alternating current to selectively charge the direct current.
  • the main control module controls the start and stop of the heating body according to the type signal and the temperature signal, and the operation of controlling the water pump further includes:
  • the working voltage provided by the main control module to the water pump is higher than the working voltage of the water pump when the power supply terminal is direct current.
  • the heating body includes an AC heating circuit and a DC heating circuit
  • the steam equipment further includes:
  • the bypass switch includes a trigger switch, a key switch, and a micro switch
  • the bypass switch is selectively closed to provide an enable signal to the control circuit.
  • the steam equipment further includes a power conversion module connected in series between the AC power supply terminal and the control circuit, and the power conversion module includes a switching power supply and a rectifier;
  • the power conversion module is used for converting the alternating current provided by the alternating current power supply terminal into direct current and supplying the direct current to the control circuit.
  • the heating body includes a metal base, and the AC heating circuit and the DC heating circuit are formed on the insulating layer of the metal base by screen printing technology.
  • an embodiment of the present invention provides a steam cleaning machine, comprising: a water tank, the water tank is used for storing liquid;
  • the steam equipment is used to heat and vaporize the liquid into steam
  • a multi-function nozzle which is selectively connected with various cleaning accessories
  • the water tank is connected to the water pump of the steam equipment, and the liquid is injected into the steam equipment through the water pump;
  • the multifunctional spray head is connected to the steam equipment through a steam channel;
  • the steam equipment body is provided with a control circuit, and the control circuit includes a power conversion module, a power supply detection module, a main control module and a water pump control module that are electrically connected in sequence.
  • an embodiment of the present invention provides a control method for a direct current steam device, wherein the direct current steam device is powered by direct current, and the method includes: detecting the temperature of a heating body and outputting a temperature signal;
  • the voltage across the heating body and the voltage across the water pump are adjusted according to a preset mode.
  • controlling the starting and stopping of the heating body and controlling the operation of the water pump include:
  • the heating body When the temperature of the heating body is higher than the heating stop temperature threshold, the heating body is controlled to stop working; when the temperature of the heating body is lower than the heating start temperature threshold, the heating body is controlled to resume work.
  • controlling the start and stop of the heating body and controlling the operation of the water pump further includes:
  • the water pump When the temperature of the heating body is higher than the water pump starting temperature threshold, the water pump is controlled to start working; when the heating body temperature is lower than the water pump starting temperature threshold, the water pump is controlled to stop working.
  • the step of controlling the starting operation of the water pump further includes:
  • the water pump After the water pump is controlled to delay the preset time, the water pump is controlled to start working.
  • controlling the starting operation of the water pump includes: controlling the water output of the water pump.
  • the method for controlling the water output of the water pump at least includes: controlling the intermittent operation of the water pump or adjusting the rotational speed of the water pump motor;
  • the step of controlling the intermittent operation of the water pump includes: controlling the water pump to stop running for a preset pause time every time it starts to work and runs for a preset running time.
  • controlling the intermittent operation of the water pump further includes:
  • the water pump is controlled to stop running for the first paused time every time it starts to work and runs for the first preset time;
  • the first preset running duration is greater than the second preset running duration.
  • adjusting the voltage across the heating body and the voltage across the water pump according to a preset mode includes:
  • the preset value of the first water pump voltage is not lower than the preset value of the second water pump voltage.
  • the steam equipment and the steam cleaning machine of the present invention support heating liquid to generate steam in two modes of AC power supply and DC power supply, and can be used independently in the case of AC power supply and DC power supply respectively, so that the liquid can be turned into steam, and the use environment is not Limited, can be used normally indoors and outdoors.
  • good steam output can also be obtained when DC power supply is used; the steam equipment can be used normally indoors and outdoors, and has a wider use environment; at the same time, it is convenient to use, safe and reliable, and cost-effective. Lower technical advantage.
  • FIG. 1 is a schematic diagram of a first embodiment of a steam generating device
  • FIG. 2 is a schematic diagram of another implementation manner of the first embodiment
  • Fig. 3 is the schematic diagram of the second embodiment of the heating body in the steam generating device
  • FIG. 4 is a schematic diagram of a second embodiment of a steam generating device
  • Fig. 5 is the structural representation of steam cleaning equipment
  • FIG. 6 is a schematic structural diagram of a thick film heater in one embodiment
  • FIG. 7 is a schematic structural diagram 1 of a steam generating device in an embodiment
  • FIG. 8 is a second structural schematic diagram of a steam generating device in one embodiment
  • Fig. 9 is a structural cross-sectional view of a steam generating device in one embodiment
  • FIG. 10 is a schematic diagram of the structure of the device body in one embodiment
  • FIG. 11 is a second schematic diagram of the device body structure in one embodiment
  • FIG. 12 is a schematic flowchart of a control method of a steam plant provided by an embodiment of the present invention.
  • FIG. 13 is a schematic flowchart of controlling the operation of a water pump and a heating body according to an embodiment of the present invention
  • FIG. 14 is a schematic diagram of a steam device provided by an embodiment of the present invention.
  • a steam generating device 10 includes a casing 20 and a heating body 40, the casing 20 is formed with a cavity 30 for accommodating liquid, a liquid inlet 51 and a steam outlet 52 for liquid to enter the cavity, and the heating body 40 is used for receiving the power supply end.
  • the electric energy generates heat, which heats the liquid in the cavity 30 to generate steam, which is discharged from the steam outlet 52 .
  • the power supply terminal includes an AC power supply terminal 11 and a DC power supply terminal 12. The AC power supply terminal and the DC power supply terminal can independently heat and vaporize the liquid entering from the liquid inlet into steam. When the AC power supply terminal is connected to the AC power supply, the liquid is heated.
  • the liquid entering the inlet enters the cavity 30, and the alternating current independently provides electrical energy for the heating body 40, so that the liquid is vaporized into steam.
  • the heating body 40 is provided with electric power, so that the liquid is vaporized into steam.
  • the heating body 40 is partially surrounded by the casing 20 , but in some other application environments, the heating body 40 can also be completely surrounded by the casing 20 to prevent the heating body 40 from being oxidized, corroded, etc., reducing the heating efficiency.
  • the heating body 40 is preferably a U-shaped heating pipe 41, and the pipe 53 spirally surrounds the periphery of the heating pipe 41 to provide more heating area , so that the liquid circulating in the pipeline 53 can be fully vaporized before reaching the steam outlet 52 .
  • the heating tube 41 can be selectively supplied with electric power by the AC power supply terminal 11 and the DC power supply terminal 12 .
  • the AC power supply terminal 11 when the AC power supply terminal 11 is used, the AC power supply is connected to the step-down module 13 including the first power connection terminal 14, and the step-down module 13 is connected to the second power connection terminal 15 of the heater 10, so that the AC power supply terminal
  • the electrical energy provided by 11 can be converted into suitable direct current and supplied to the heating pipe 41 .
  • the DC power supply terminal 12 can be directly connected to the heating body 40 .
  • the working power of the heating tube 41 in the AC power supply state is 2-4 times that in the DC power supply state. The user can selectively switch the AC power supply or the DC power supply according to the working conditions and use environment.
  • the AC power supply terminal 11 is used to provide power; outdoor Under the circumstance, the DC power supply terminal 12 can be used to provide electrical energy, and the DC power supply terminal 12 can be in the form of a car power supply, a built-in battery, or a detachable rechargeable battery.
  • the heating body 40 includes a first heating tube 41 and a second heating tube 42 , wherein the first heating tube 41 is electrically connected to the AC power supply terminal 11 , and the second heating tube 41 is electrically connected to the AC power supply terminal 11 .
  • the heating tube 42 is electrically connected to the DC power supply terminal 12 .
  • the power of the first heating tube 41 is 600-1500W in the working state, and the power of the second heating tube 42 is 100-500W.
  • the steam generating device is disc-shaped, preferably disc-shaped.
  • the heating body 40' is a thick-film circuit formed by using a thick-film resistor technology, and is formed on the thermally conductive packaging structure 43. As shown in FIG. 3 , the heating body 40 includes a first heating circuit 41' and a second heating circuit 42', and the first heating circuit 41' and the second heating circuit 42' are electrically isolated by an insulating part.
  • the first heating loop 41' is electrically connected to the AC power supply terminal 11, and the second heating loop 42' is electrically connected to the DC power supply terminal 12, and the voltage of the DC power supply terminal is preferably 40-80V.
  • the heating circuit adopts a vortex layout, which can provide more heating area, and can effectively reduce the heating body 40' in an environment with the same electric energy-heat energy conversion efficiency. volume of.
  • the first heating circuit 41' can be used under heavy working conditions, and the heating power is 600-1500W, which can generate 12-25g of steam per minute;
  • the second heating circuit 42' can be used under light working conditions, and the heating power is 100 ⁇ 500W, can produce 3 ⁇ 8g steam per minute.
  • the heating body 40' is arranged at the bottom of the steam generating device 10', the liquid inlet 51 and the steam outlet 52 are arranged above the casing 20, and the cavity 30 containing the liquid is arranged above the heating body 40'. After the liquid enters the cavity 30 through the liquid inlet 51, it is directly heated by the heating body 40', and the generated steam is discharged through the steam outlet 52.
  • the heating body 40' in this embodiment has the advantages of high heating efficiency and small volume, and can greatly reduce the weight and volume of the steam generating device.
  • the present invention also provides a steam cleaning device, the steam cleaning device includes the steam generating device described in any one of the above embodiments, as shown in FIG. 5 , and also includes a water tank 61 and a pump body 62 .
  • the pump body 62 is used to receive the electrical energy from the AC power supply terminal 11 or the DC power supply terminal 12 to pump the liquid into the cavity 30 of the steam generating device.
  • the steam outlet 52 exits.
  • the pump body 62 preferably uses a direct current pump.
  • a thick film heater 100 has a first working mode and a second working mode.
  • the thick film heater 100 includes: a substrate 110 , a first heating element 120 and a second heating element 130.
  • the first electric heating element 120 and the second electric heating element 130 are disposed on the substrate 110 at intervals, and the resistance value of the first electric heating element 120 is different from that of the second electric heating element 130 .
  • the first electric heating element 120 is used for connecting to the first voltage
  • the second electric heating element 130 is in an open state
  • the second electric heating element 130 is used for connecting the second voltage electrically
  • the second electric heating element 130 is used for electric connection to the second voltage.
  • An electric heating element 120 is in an open state.
  • the first voltage is less than the second voltage.
  • first electric heating elements 120 and second electric heating elements 130 with different resistance values are disposed on the substrate 110 .
  • 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;
  • the second electric heating element The element 130 is connected to the second voltage, and the first electric heating element 120 is disconnected and does not work.
  • the first electric heating element 120 and the second electric heating element 130 can be respectively connected to different voltages, and the first electric heating element 120 and the second electric heating element 130 do not work at the same time, so when different power outputs are required, choose one Connecting to the first voltage or the second voltage makes each loop work independently, ensuring that the loop structure under different powers is more concise and orderly.
  • the thick film heater 100 adopts the direct heating method of double heating channels, and has higher thermal efficiency (the thermal efficiency is as high as 95%) compared with the traditional clad electric heating tube.
  • the resistance value used under different powers is the resistance of the first electric heating element 120 or the second electric heating element 130 itself.
  • the resistance value is not the resistance value after combining with each other, which effectively prevents each electric heating element from amplifying the accuracy difference of each when combined, thereby effectively reducing the impact on the output power and improving the output of different power accuracy.
  • the difference between the resistance value of the first electric heating element 120 and the resistance value of the second electric heating element 130 should be understood as: the resistance value of the first electric heating element 120 and the resistance value of the second electric heating element 130 are different, that is, the first electric heating element 120
  • the resistance value of the electric heating element 120 may be greater than the resistance value of the second electric heating element 130 , and may also be smaller than the resistance value of the second electric heating element 130 .
  • a direct current and an alternating current can be supplied to the thick film heater.
  • the use of AC power transmission can reduce power loss and ensure that the end product can have a higher voltage. Therefore, when high power is required (such as kitchen steam cleaning products under heavy working conditions), the AC power The current (ie, the second voltage) is connected to the second heating element 130, so that the thick film heater 100 outputs a larger heating power in the high voltage mode.
  • the direct current ie, the first voltage
  • the first electric heating element 120 can be connected to the first electric heating element 120, so as to realize the small heat in the low voltage mode. power output.
  • the effective voltage value of the alternating current is 120V or 220V
  • the voltage value of the direct current is 18V.
  • the length of the first heating element 120 is 280.5mm
  • the width is 3.0mm
  • the resistance value is 0.78 ⁇ (tested at 25°C)
  • the length of the second heating element 130 is 475mm
  • the width is 2.2mm
  • the resistance value is 20 ⁇ (25°C). °C test).
  • the AC (alternating current)/DC (direct current) power density of the thick film heater 100 needs to be controlled to be less than 60W/cm 2 .
  • the external shape of the substrate 110 has various designs, for example, the external shape of the substrate 110 is a circle, an ellipse, a square, a pentagon, and the like.
  • the shape of the substrate 110 is circular, in order to reduce the loss of thermal efficiency, the diameter of the substrate 110 is at most 60mm, and the maximum current passed through the first heating element 120 or the second heating element 130 is 20A.
  • the first electric heating elements 120 and the second electric heating elements 130 are both extended along the surface of the substrate 110 , and the first electric heating elements 120 and the second electric heating elements 130 are alternately arranged. It can be seen from this that the first electric heating elements 120 and the second electric heating elements 130 are alternately arranged on the substrate 110 , which is beneficial for both the first electric heating elements 120 and the second electric heating elements 130 to cover the surface of the substrate 110 , so that the The heating fluid is heated more evenly.
  • the arrangement of the first electric heating element 120 and the second electric heating element 130 on the substrate 110 is the same It can be, but not limited to, a coiled arrangement, a serpentine arrangement, a back-shaped arrangement, and the like.
  • the alternating arrangement of the first electric heating element 120 and the second electric heating element 130 should be understood as: during the arrangement process, along a certain direction, a part of the first electric heating element 120 and a part of the second electric heating element 130 are in a certain direction. Alternately spaced distribution on the substrate 110 .
  • the first heating element 120 and the second heating element 130 both surround the center of the substrate 110 and extend in layers along the direction from the center of the substrate 110 to the edge of the substrate 110 .
  • the annular structure formed by the first heating element 120 and the annular structure formed by the second heating element 130 are arranged alternately.
  • the first electric heating element 120 and the second electric heating element 130 are arranged on the substrate 110 in a ring-shaped interval, so that the first electric heating element 120 and the second electric heating element 130 are better laid on the substrate 110 , in order to improve the heating effect of the fluid to be heated.
  • the annular structure may be a closed ring or an open ring.
  • the shape of the annular structure can be various, such as circular, oval, square and so on.
  • first electric heating element 120 or the second electric heating element 130 when the first electric heating element 120 or the second electric heating element 130 is coiled on the substrate 110 , it can always be arranged in the same direction (for example, clockwise or counterclockwise) gradually opening and coiling; The steering wheel goes around once, then around the steering wheel counterclockwise, and so on.
  • the annular structure formed by the first heating element 120 includes a first split ring 121 , a second split ring 122 and a third split ring 123 which are looped from the inside to the outside in sequence.
  • the openings of the first split ring 121 , the second split ring 122 and the third split ring 123 are disposed opposite to each other.
  • One end of the second split ring 122 is connected to one end of the first split ring 121
  • the other end of the second split ring 122 is connected to one end of the third split ring 123 .
  • the first heating element 120 when the first heating element 120 is arranged, it circles around the center of the base plate 110, and firstly circles around a steering wheel; then, it circles again in the opposite direction; Specifically, in this embodiment, one end of the second split ring 122 is connected to one end of the first split ring 121 through the 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 the second connecting section 125 .
  • the first connecting section 124 and the second connecting section 125 are respectively located on opposite sides of the opening of the first split ring 121 .
  • the annular structure formed by the second heating element 130 includes a fourth split ring 131 , a fifth split ring 132 , a sixth split ring 133 and a seventh split ring 134 which are looped from the inside to the 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 split ring 133 and the seventh split ring 134 are both sleeved outside the fourth split 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 split ring 133 communicates with one end of the seventh split ring 134 .
  • the arrangement of the second heating element 130 may refer to the arrangement of the first heating element 120 .
  • the second electric heating element 130 needs to cooperate with the first electric heating element 120 when arranging, so that 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 arranged.
  • one end of the fifth split ring 132 is connected to one end of the fourth split ring 131 through the third connecting segment 135 .
  • the other end of the fifth split ring 132 is connected to one end of the sixth split ring 133 through the fourth connecting segment 136 .
  • the other end of the sixth split ring 133 communicates with one end of the seventh split ring 134 through the fifth connecting segment 137 .
  • the third connection segment 135 and the fourth connection segment 136 are respectively located on opposite sides of the opening of the fifth split ring 132 .
  • the wiring creepage distance of the first heating element 120 on the substrate 110 the wiring creepage distance of the second heating element 130 on the substrate 110 , and the wiring creepage distance of the first heating element 120 and the second heating element 120 .
  • the creepage distance between the components 130 is greater than or equal to 3.2mm, so that the first electric heating element 120 and the second electric heating element 130 can operate stably, avoid the electric polarization phenomenon due to the distance is too close, which is beneficial to improve the thick film heater 100 electricity safety.
  • a common terminal 140 is provided on the substrate 110 .
  • 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 end 140 .
  • the common end 140 is used to make the electrical connection of the first electric heating element 120 and the second electric heating element 130 share one end, thereby reducing wiring.
  • the setting of the terminal is convenient for wiring operation.
  • the common terminal 140 can be used as the common terminal of the alternating current and the direct current.
  • the thick film heater 100 further includes a terminal block 150 .
  • Both the first electric heating element 120 and the second electric heating element 130 are respectively used for connecting with the direct current and the alternating current through the wiring seat 150 . In this way, it is convenient for the user to perform wiring operations on the first electric heating element 120 and the second electric heating element 130 .
  • the temperature resistance performance of the terminal block 150 should be considered, for example, the terminal block 150 is made of ceramic material.
  • the terminal block 150 is provided with a first terminal 151 , a second terminal 152 and a third terminal 153 .
  • One end of the first heating element 120 and one end of the second heating element 130 are both connected to the first terminal 151 .
  • the other end of the first heating element 120 is connected to the second terminal 152 .
  • the other end of the second heating element 130 is connected to the third terminal 153 .
  • the alternating current and the direct current are correspondingly connected to the first heating element 120 and the third terminal 153 . on the second heating element 130 .
  • a direct current is connected between the first terminal 151 and the second terminal 152
  • an alternating current is connected between the first terminal 151 and the third terminal 153 .
  • the first terminal 151 , the second terminal 152 and the third terminal 153 are all covered with a protective cover 154 , for example, the protective cover 154 is a silicone cover made of high temperature resistant material for over 20A current.
  • the thick film heater 100 further includes a fuse module 170 .
  • the first electric heating element 120 and the second electric heating element 130 are both electrically connected to the insurance module 170 to protect the safe and stable operation of each circuit.
  • the thick film heater 100 further includes a thermostat 160 .
  • the thermostat 160 is used to control the operating temperature of the thick film heater 100 .
  • the temperature controller 160 is mounted on the side surface of the substrate 110 facing away from the first electric heating element 120 and the second electric heating element 130 through the bracket 161 .
  • a steam generating device the steam generating device includes an upper cover 300 , a body 200 and the thick film heater 100 in any one of the above embodiments.
  • the device body 200 is mounted on the substrate 110 .
  • the upper cover 300 is mounted on the body 200 .
  • the side surface of the body 200 facing the base plate 110 is provided with a first flow channel 210
  • the side surface of the body 200 facing the upper cover 300 is provided with a second flow channel 220
  • the body 200 is also provided with the first flow channel 210 and the second flow channel 220 .
  • the first air outlet 230 communicated with the two flow passages 220 .
  • the upper cover 300 is provided with a water inlet hole 310 and a second air outlet hole 320 .
  • the water inlet hole 310 is communicated with the first flow channel 210
  • the second air outlet hole 320 is communicated with the second flow channel 220 .
  • the above steam generating device adopts the above thick film heater 100 , and two types of first electric heating elements 120 and second electric heating elements 130 with different resistance values are arranged on the substrate 110 .
  • 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;
  • the second electric heating element The element 130 is connected to the second voltage, and the first electric heating element 120 is disconnected and does not work.
  • the water enters the first flow channel 210 from the water inlet hole 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 the liquid into gas;
  • An air outlet 230 flows into the second flow channel 220 ; and then flows into the second air outlet 320 from the second flow channel 220 , and is discharged for use.
  • the inner wall of the second flow channel 220 is provided with a partition 240 .
  • the first air outlet 230 and the second air outlet 320 are located on opposite sides of the partition plate 240 respectively.
  • a gap is left between the separator 240 and the upper cover 300 for the gas flowing out of the first air 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 air outlet 320 is low.
  • the gap between the partition plate 240 and the upper cover 300 may be determined according to the actual product size, which is not specifically limited herein.
  • a plurality of separating rings 250 are arranged on one side of the device body 200 facing the substrate 110 .
  • the dividing ring 250 is extended around the center of the device body 200 .
  • the dividing ring 250 is provided with a communication port 251 , and the communicating ports 251 on two adjacent dividing rings 250 are staggered.
  • a first flow channel 210 is formed between two adjacent partition rings 250 and the device body 200 .
  • the steam plant heats the input liquid, producing a steam output.
  • the steam plant heats the input liquid, producing a steam output.
  • a steam output Including: shell, power supply terminal, water pump, heating body and control circuit.
  • the casing is used for accommodating the water pump, the heating body and the control circuit.
  • the power supply end is installed on the casing to provide power input to the steam equipment.
  • One end of the power supply end is formed with a connection part for connecting with an external power source, and the other end is connected to the control circuit and the heating body inside the casing.
  • the heating body is connected to the power supply end, and is used to heat the input liquid by using electric energy, and vaporize it into steam.
  • the water pump connected with the heating body, injects the liquid into the heating body.
  • the control circuit is connected to the power supply end, the heating body and the water pump, receives the electric energy from the power supply end, controls the electrical connection between the power supply end and the heating body and the water pump, and adjusts the electric energy supplied to the water pump and the heating body to make it follow the preset mode Work.
  • an embodiment of the present invention provides a control method for a steam device, the method includes:
  • S1 detect the power supply type of the power supply terminal, and output the type signal
  • the voltage across the heating body and the water pump is controlled to be constant.
  • the steam device can be powered by an AC power supply or a DC power supply
  • the power supply terminal includes an AC power supply terminal and a DC power supply terminal.
  • the AC power supply end is connected to an external AC power supply by means of a wired cable, such as an AC socket, a generator, etc., and receives the AC input.
  • the DC power supply terminal can be connected to portable energy storage units, such as nickel-metal hydride battery packs, lead-acid batteries, lithium-ion battery packs, etc., to receive DC power input.
  • the DC power supply terminal can also be connected to an external DC power supply through a cable, such as a switching power supply.
  • the power supply parameters of the AC power supply or the DC power supply are detected, and a type signal is output.
  • parameters such as voltage and current of the power supply can be detected, and the detected parameters represent different power supply types respectively.
  • the type signal representing the AC power input is output; when the DC power supply input is detected and the AC power supply input is not detected, the output represents the DC power input.
  • step S2 during the working process of the heating body, the electric energy is converted into heat energy to increase the temperature of the heating body.
  • the temperature information of the heating body is detected, and the temperature information is converted into an electrical signal output representing the temperature, which can better control the work of the heating body based on the temperature signal.
  • the temperatures of multiple regions of the heating body are detected simultaneously, so that more reliable temperature information can be obtained. These areas include but are not limited to the positions of the top and bottom of the heating body close to the water inlet, and the positions of the bottom and top of the heating body close to the steam outlet, and output temperature signals representing temperature information at these positions respectively.
  • step S3 the electrical connection between the power supply terminal and the heating body is turned on; when the temperature of the heating body is higher than the water pump startup temperature threshold , control the water pump to start working; when the temperature of the heating body is lower than the water pump start temperature threshold, control the water pump to stop working; when the temperature of the heating body is higher than the heating stop temperature threshold, control the heating body Stop working; when the temperature of the heating body is lower than the heating start temperature threshold, control the heating body to resume work.
  • the heating body starts to work.
  • the heating body does not reach a certain temperature, that is, does not reach the preset water pump start-up temperature threshold, the liquid cannot be vaporized by heat. At this time, there is no need to inject liquid into the heating body, and the water pump will not start to work.
  • the water pump is controlled to start working, and the liquid is injected into the heating body, and the heating body vaporizes the liquid through heat.
  • the water pump is controlled to stop working, so that the internal temperature of the heating body can be maintained at a high level to ensure the vaporization effect of the liquid.
  • the heating body When the temperature of the heating body continues to rise to a certain level, that is, higher than the preset heating stop temperature threshold, continued heating may damage the heating body and peripheral equipment, and the heating body is controlled to stop working at this time.
  • the temperature of the heating body drops below the heating stop temperature threshold due to the vaporization of the liquid or the increase of the liquid injection amount, the heating body is controlled to resume work to maintain the temperature level in the heating body.
  • the heating efficiency of the heating body is different when the steam equipment is powered by DC power supply and AC power supply, so the threshold value of the starting temperature of the water pump is also different under the conditions of DC power supply and AC power supply.
  • the steam equipment uses AC power supply
  • the water pump does not start to work
  • the temperature in the heating body is not lower than 150 °C
  • the water pump starts to work.
  • the steam equipment uses DC power supply
  • the temperature in the heating body is lower than 190 °C
  • the water pump does not start to work
  • the temperature in the heating body is not lower than 190 °C
  • the water pump when the temperature in the heating body is not lower than the preset water pump startup temperature threshold, water is injected into the water pump immediately, which may cause the temperature in the heated body to drop below the preset water pump startup temperature threshold, resulting in The water pump starts and stops frequently, so when the temperature inside the heating body is not lower than the pre-set water pump start temperature threshold, the water pump will be started after a delay of 3 seconds.
  • the temperature of multiple regions in the heating body is detected, and the temperature detected in different regions has a more accurate reference significance for controlling the start and stop of the water pump and the start and stop of the heating body.
  • the temperature closest to the water inlet of the heating body is selected; when evaluating the start and stop of the heating body, the temperature of any area in the heating body is selected.
  • the average temperature in the heating body can also be calculated from the temperature statistics of each area, as the temperature basis for evaluating the start and stop of the water pump and the start and stop of the heating body.
  • the starting and stopping of the water pump and the starting and stopping of the heating body are not based on a fixed threshold value, but are based on a preset temperature range, and the temperature range has a preset lower temperature limit and upper temperature limit.
  • the water pump When the temperature of the heating body exceeds the preset upper limit of the starting temperature of the water pump, the water pump is controlled to start working; when the temperature of the heating body is lower than the lower limit of the starting temperature of the pump, the water pump is controlled to stop working; when the temperature of the heating body exceeds the preset temperature limit, the water pump is controlled to stop working; When the heating stop temperature upper limit is set, the heating body is controlled to stop working, and when the temperature of the heating body is lower than the preset heating stop temperature lower limit, the heating body is controlled to start working.
  • the stability of the circuit is improved, and the start and stop of the water pump or the heating body will not be frequently controlled due to slight changes in temperature.
  • step S3 the intermittent operation of the water pump is controlled, and each time the water pump starts to work and runs for a preset running time, it stops running for a preset pause time.
  • the water pump is controlled to work intermittently according to a preset period to control the amount of water injected by the water pump into the heating body per unit time. After the pump runs for a preset working time, it stops running for a preset pause time; after stopping for a preset pause time, it continues to run for a preset working time.
  • the water supply volume of the water pump per unit time is calculated, thereby determining the preset working time and pause time of the water pump.
  • the heat loss during the heating process of the heating body is Q
  • the heat loss includes the ineffective work of the heating body (such as external heat transfer, heat radiation, heat convection and heat conduction, etc.);
  • the specific heat capacity of water is C
  • the mass of water is M;
  • the temperature difference of water from room temperature to boiling point is ⁇ T;
  • the latent heat of vaporization of water at the boiling point is ⁇ Q, and the amount of steam is S1
  • the planned water supply amount S0 (unit: g) of the water pump can be calculated as:
  • the rated power of the heating body is 600W
  • the water supply rate of the water pump is 28.7ml/min
  • the preset running time of the water pump is 15 seconds
  • the preset operation time of the water pump is suspended. The duration is 3 seconds.
  • step S3 if it is detected that the power supply type is direct current; then when the voltage of the direct current is higher than the first voltage preset value, the voltage is adjusted so that the heating body uses the first voltage.
  • a voltage preset value is operated, the water pump is controlled to work at the first water pump voltage preset value, and every time the water pump starts to work and runs for a first preset running time, stop running for a first pause time;
  • the steam equipment When the steam equipment is powered by direct current, especially when the energy storage unit is used, it is limited by the energy of the energy storage unit. With the continuous discharge of the energy storage unit, its voltage will continue to decrease. In this case, the working power of the heating body and the The amount of steam produced will be affected. Therefore, the power supply of the steam equipment by the energy storage unit is chopped, so as to ensure that the working power of the heating body is stable within a certain period of time.
  • the power supply of the DC power to the heating body is chopped, so that the heating body works at the first voltage preset value; at the same time, the power supply is supplied according to the preset energy storage unit voltage and the water pump.
  • the water pump is controlled to work intermittently according to a preset period to control the amount of water injected by the water pump into the heating body per unit time. After each running for the first preset running time, the water pump stops running for the preset first pause duration; after stopping the running for the preset first pause duration, it continues to run for the first preset running duration.
  • the energy storage unit continues to discharge, when the voltage of the direct current is not higher than the first voltage preset value, the chopping of the power supply to the heating body is stopped, so that the energy storage unit outputs full power.
  • the voltage of the energy storage unit decreases, according to the preset relationship between the voltage of the energy storage unit and the supply voltage of the water pump (water output of the water pump), the supply voltage of the water pump is reduced to reduce the water output, so that the water supply and heating power are consistent, so as to reduce the water output. To achieve the effect of stable steam output.
  • the water pump stops running for the second preset pause duration; after stopping for the second preset pause duration, it continues to run for the second preset running duration.
  • the second preset running duration is smaller than the first preset running duration.
  • the voltage of the energy storage unit is 20V
  • the rated power of the heating body is 400W
  • the first voltage preset value can be set to 17V.
  • the power supply of the direct current to the heating body is chopped, so that the heating body works under the working voltage of 17V, and the power is controlled at about 350W to 360W.
  • the working voltage of the water pump is adjusted, and the water pump is controlled to work at a voltage of 2V, so as to ensure the water supply of the water pump and the work of the heating body.
  • the water pump is controlled to work intermittently according to the preset cycle to control the amount of water injected by the water pump into the heating body within a unit time. The pump stops running for 3 seconds every 15 seconds.
  • step S3 when it is detected that the power supply terminal is powered by both alternating current and direct current, the alternating current is controlled to provide electrical energy to the heating body, and the direct current is controlled to provide electrical energy to the water pump.
  • alternating current can provide more and stable electric energy, so control the alternating current to supply power to the heating body, so as to obtain better heating effect and generate stable steam output.
  • direct current is used to provide electrical energy for the water pump, avoiding the energy loss caused by the conversion of alternating current to direct current and then supplying power to the water pump and avoiding the heat generated during the energy conversion process.
  • an embodiment of the present invention provides a steam device 400 implementing the above method.
  • the steam device 400 includes a power supply detection module 410 , a temperature protection module 420 , and a main control module 430 .
  • the power supply detection module 410 is used to detect the power supply type of the power supply terminal, and output a type signal;
  • the temperature protection module 420 is used to detect the temperature of the heating body and output a temperature signal
  • the main control module 430 is used to control the start and stop of the heating body and control the operation of the water pump according to the type signal and the temperature signal;
  • the main control module adjusts the voltage across the heating body and the voltage across the water pump according to a preset mode based on the voltage of the direct current;
  • the main control module controls the voltage across the heating body and the water pump to be constant.
  • the temperature protection module 200 includes: a first thermistor and a second thermistor, the first thermistor is disposed near the water inlet of the heating body, the The second thermistor is arranged near the steam outlet of the heating body; the first thermistor and the second thermistor detect temperatures in different regions of the heating body and output temperature signals.
  • the temperature protection module uses a thermistor to detect the temperature, and the thermistor can be used to control the temperature within the range between the upper limit and the lower limit, that is, the switch of the circuit is only controlled when the upper limit or lower limit temperature threshold is exceeded, and no exact temperature is required.
  • the fixed value of the temperature is used as the threshold value, which improves the stability of the loop, and avoids frequent switching when the temperature is unstable.
  • the circuit design makes the circuit design more compact and the cost is lower.
  • Those skilled in the art can think that other types of temperature sensors, such as non-contact sensors, can also be used to detect the temperature.
  • the temperature protection module includes four thermistors, two of which are disposed on the first casing, respectively located directly below the water inlet and below the air outlet; the other two are disposed on the second casing On the body, they are located on the side of the water inlet and the side of the air outlet.
  • the power supply detection module 410 is also used to implement the above step S1; the temperature protection module 420 is also used to implement the above step S2; the main control module 430 is also used to implement the above step S3.
  • the main control module 300 of the steam equipment controls the start and stop of the heating body, and controls the operation of the water pump, including:
  • the operating voltage provided by the main control module to the water pump is higher than the operating voltage of the water pump when the power supply terminal is direct current.
  • the working power of the heating body can be higher than that when using direct current.
  • the water pump can work at a higher working voltage, so that it can inject more liquid into the heating body and generate more steam.
  • the heating body includes an AC heating circuit and a DC heating circuit; when the AC power is supplied, only the AC heating circuit works; when the DC power is supplied, only the DC heating circuit works.
  • the steam equipment can work with a larger power when using alternating current, generate more steam, and meet the working requirements under the conditions of large demand for steam; at the same time, the steam equipment can use alternating current. At the same time, it can work with controllable power and generate stable steam, and at the same time prolong the working time as much as possible, avoiding the problem of short working time of steam equipment under the direct current condition.
  • the heating body includes a metal base, and the AC heating circuit and the DC heating circuit are formed on the insulating layer of the metal base by screen printing technology.
  • the metal base is provided with a metal substrate, and the metal substrate is preferably made of stainless steel.
  • the metal substrate is provided with an insulating layer, and the AC heating circuit and the DC heating circuit are formed on the insulating layer of the metal substrate by screen printing technology, so that the heat can be more directly and efficiently conducted into the pipeline to heat the water flow, Significantly reduces heat loss and improves thermal efficiency.
  • the steam equipment further includes: a main circuit switch and a bypass switch, the bypass switch includes a trigger switch, a key switch, and a micro switch; the bypass switch can be selectively closed, An enable signal is provided to the control circuit.
  • a start signal is provided to the control circuit by triggering the bypass switch, and the main circuit switch is controlled to be closed by the control circuit to electrically connect the power source and the heating body.
  • the combination of the bypass switch and the main circuit switch enables users to obtain a more comfortable and lightweight operating experience.
  • the main circuit switch is provided with a redundant circuit.
  • the redundant circuit can disconnect the electrical connection between the power supply and the heating body to avoid the heating body. The overheating situation makes the reliability and safety of the steam equipment higher.
  • the steam equipment further includes a power conversion module connected in series between the AC power supply terminal and the control circuit, and the power conversion module includes a switching power supply and a rectifier; The alternating current provided by the alternating current power supply terminal is converted into direct current and provided to the control circuit.
  • the steam cleaning machine includes: a water tank, the water tank is used for storing liquid; the steam device according to any one of claims 8-20, the steam device is used for The liquid is heated and vaporized into steam; the multifunctional nozzle is selectively connected with various cleaning accessories; the water tank is connected with the water pump of the steam equipment, and the liquid is injected into the steam equipment through the water pump; the multifunctional The spray head is connected to the steam equipment through a steam channel; the steam equipment body is provided with a control circuit, and the control circuit includes a power conversion module, a power supply detection module, a main control module and a water pump control module that are electrically connected in sequence.
  • the present invention also provides a control method for a steam appliance powered by a DC power supply, and the control method is the above-mentioned control method when the power supply terminal is a DC power supply The control method is not repeated here.
  • the present invention also provides a steam device powered by a DC power supply, the steam device includes the DC heating circuit described above, and a main control module, so The main control module operates the control method when the power supply terminal is a DC power supply as described above.
  • the device in the above embodiment is used to implement the control method of the corresponding steam device in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.
  • the steam equipment and the control method thereof provided by the present invention can selectively use AC power supply or DC power supply, and combined with the pre-configured control method of the steam equipment, a good steam output effect can also be obtained when the DC power supply is used;
  • the use of DC power supply for the equipment has become a reality, and the steam equipment can be used normally indoors and outdoors, and has a wider use environment; at the same time, it has the technical advantages of convenient use, safety and reliability, low cost and compact structure.

Landscapes

  • Control Of Resistance Heating (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

La présente invention concerne un dispositif à vapeur, un procédé de commande du dispositif à vapeur et un nettoyeur à vapeur. Le dispositif à vapeur comprend : un boîtier (20), le boîtier (20) comprenant une entrée de liquide (51) et une sortie de vapeur (52), et une cavité (30) destinée à recevoir un liquide formé dans le boîtier (20); et un corps chauffant (40) au moins partiellement disposé dans le boîtier (20), le corps chauffant (40) étant utilisé pour recevoir l'énergie électrique d'une extrémité d'alimentation électrique pour générer de la chaleur de manière à chauffer et vaporiser le liquide dans la cavité (30) en vapeur, le corps chauffant comprenant au moins un groupe de circuits de chauffage. L'extrémité d'alimentation électrique comprend une extrémité d'alimentation en courant alternatif (11) et une extrémité d'alimentation en courant continu (12), et une alimentation en courant alternatif et une alimentation en courant continu peuvent chauffer et vaporiser indépendamment le liquide entrant par l'entrée de liquide (51) en vapeur.
PCT/CN2021/121525 2020-09-30 2021-09-29 Dispositif à vapeur, procédé de commande du dispositif à vapeur et nettoyeur à vapeur WO2022068840A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202011061018.4 2020-09-30
CN202011061018 2020-09-30
CN202121416632.8U CN216705207U (zh) 2020-09-30 2021-06-24 厚膜加热器及蒸汽发生设备
CN202121416632.8 2021-06-24

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WO2022068840A1 true WO2022068840A1 (fr) 2022-04-07

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WO (1) WO2022068840A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2515904A (en) * 2013-06-11 2015-01-07 Bissell Homecare Inc Surface cleaning apparatus with hydrogen peroxide generator
CN105520696A (zh) * 2014-10-17 2016-04-27 百得有限公司 蒸汽清洁装置
CN107176143A (zh) * 2017-06-09 2017-09-19 青岛理工大学 一种新型蒸汽洗车装置
CN108401309A (zh) * 2018-05-10 2018-08-14 东莞市可乐狗电子科技有限公司 一种多电压适用厚膜发热盘
US20190084677A1 (en) * 2017-05-30 2019-03-21 Charles VanHaelst Quadcopter pressure washer
CN109499967A (zh) * 2018-12-06 2019-03-22 天津宏信设备租赁有限公司 工业设备的高温高压自动加热清洗系统
CN110560407A (zh) * 2019-09-19 2019-12-13 上海奇佳电子有限公司 一种清洗机系统

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2515904A (en) * 2013-06-11 2015-01-07 Bissell Homecare Inc Surface cleaning apparatus with hydrogen peroxide generator
CN105520696A (zh) * 2014-10-17 2016-04-27 百得有限公司 蒸汽清洁装置
US20190084677A1 (en) * 2017-05-30 2019-03-21 Charles VanHaelst Quadcopter pressure washer
CN107176143A (zh) * 2017-06-09 2017-09-19 青岛理工大学 一种新型蒸汽洗车装置
CN108401309A (zh) * 2018-05-10 2018-08-14 东莞市可乐狗电子科技有限公司 一种多电压适用厚膜发热盘
CN109499967A (zh) * 2018-12-06 2019-03-22 天津宏信设备租赁有限公司 工业设备的高温高压自动加热清洗系统
CN110560407A (zh) * 2019-09-19 2019-12-13 上海奇佳电子有限公司 一种清洗机系统

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