CN216293944U - Tubular steam generator and wireless steam mop - Google Patents

Abstract

The utility model discloses a tubular steam generator and a wireless steam mop, and relates to the field of household floor cleaning devices. This tubulose steam generator includes the screw rod, and the cover is located the screw rod outer, with the screw thread of screw rod constitutes the tubular metal resonator of spiral runner, divide and locate the water inlet and the steam outlet at the both ends of tubular metal resonator, and prevent the water outlet mechanism that prevents of steam outlet outflow water, the outer wall of tubular metal resonator corresponds spiral runner is provided with high temperature resistance insulating layer, be provided with the graphite alkene layer that generates heat on the insulating layer. The wireless steam mop comprises the tubular steam generator. The tubular steam generator is convenient to manufacture, and can output steam in real time on the premise of avoiding water leakage of a steam outlet in the starting stage of the steam generator and avoiding dry burning of the electric heating element.

Description

Tubular steam generator and wireless steam mop

Technical Field

The utility model relates to the field of household floor cleaning devices, in particular to a tubular steam generator and a wireless steam mop adopting the tubular steam generator.

Background

The steam mop can spray steam to the cleaning surface, so that the steam mop has the function of disinfecting the cleaning surface and can effectively remove stubborn stains which cannot be removed by common clear water.

However, the process of changing water into steam needs to consume a large amount of electric energy and wait for a long time, which seriously restricts the popularization and application of the steam mop, in particular to a wireless steam mop. To this end, it is being studied to add a small steam generator which is supplied with water through a fresh water container on the mop and which is used to convert the water into steam in real time, thereby reducing the power requirements and reducing the time to wait for the water to be converted into steam.

The small-sized steam generator generally adopts a ceramic heating plate as an electric heating plate, and particularly relates to an electric heating plate formed by printing a graphene heating wire on a ceramic substrate, which is referred to as MCH for short. Such small steam generators still suffer from the following technical drawbacks: firstly, the electric heating sheet has short service life and is easy to break; secondly, when the steam generator is started, water in the steam generator is not converted into steam, so that the steam generator can spray water for a short time, namely, a phenomenon of water leakage at a steam outlet exists; thirdly, an internal heating box type structure is generally adopted, the ceramic heating plate is arranged in the box body, a water tank needs to be formed on the inner wall of the box body during manufacturing, and an electrode needs to be led out from the inner wall of the box body through the box wall, so that the manufacturing process is complex.

In order to solve the second technical defect, people are studying a scheme that when the steam generator is started, an electric heating plate of the small-sized steam generator is started first, after the electric heating plate is preheated, a water pump is started, water is input into the small-sized steam generator, and water flow is converted into steam to be output after passing through the electric heating plate. The scheme effectively solves the second technical defect, but brings new technical problems, namely: each start-up will dry-burn the electrical heating plate, which will seriously affect the service life of the steam generator.

Accordingly, there is a need for a steam generator suitable for use with cordless steam mops.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a tubular steam generator which is convenient to manufacture, can output steam in real time on the premise of avoiding water leakage at a steam outlet in the starting stage of the steam generator and avoiding dry burning of an electric heating element, and can be suitable for a wireless steam mop.

The present invention provides a steam generator including:

a tubular steam generator, comprising:

a screw;

the metal pipe is sleeved outside the screw rod and forms a spiral flow channel with the threads of the screw rod, a high-temperature-resistant insulating layer is arranged on the outer wall of the metal pipe, and a graphene heating layer is arranged on the insulating layer;

a water inlet which is arranged at one end of the metal pipe and supplies water to the spiral flow passage;

the steam outlet is arranged at the other end of the metal pipe and used for outputting steam by the spiral flow passage; and

and a water outlet prevention mechanism for preventing water from flowing out of the steam outlet.

In the above tubular steam generator, preferably, the steam generator further includes a magnetizer disposed at a side of the water inlet for magnetizing the water flowing toward the spiral flow passage.

In the above tubular steam generator, preferably, the steam generator further includes an ultrasonic transducer, which is disposed on an outer side portion of the metal tube facing the spiral flow channel, and is configured to atomize water in the spiral flow channel.

In the above tubular steam generator, preferably, the screw is a ceramic screw.

In the above tubular steam generator, preferably, the graphene heating layer is disposed corresponding to the spiral flow channel.

In the above tubular steam generator, preferably, the water outflow preventing mechanism includes: a check valve disposed at the water inlet; and the steam valve is arranged at the steam outlet, is communicated when the fluid at the steam outlet is in a gaseous state, and is closed when the fluid at the steam outlet is in a liquid state.

In the above tubular steam generator, preferably, two end portions of the screw are respectively recessed along a direction of a central axis of the screw to form an accommodating cavity, a through hole or a notch is formed in a cavity wall of the accommodating cavity, and the check valve and the steam valve are arranged through the corresponding accommodating cavity.

In the above tubular steam generator, preferably, the steam valve is a pressure valve, and the opening threshold of the pressure valve is set as: the opening threshold value of the pressure valve is smaller than or equal to the pressure in the metal pipe when the fluid at the steam outlet is in a gaseous state and is larger than the pressure in the metal pipe when the fluid at the steam outlet is in a liquid state.

In the above tubular steam generator, preferably, the steam valve is an electromagnetic valve, and the steam generator further includes: an identifier for identifying whether the fluid at one end of the spiral flow passage near the steam outlet is in a liquid state; and when the identification result of the identifier is liquid, the controller controls the electromagnetic valve to enter a closed state.

In the above-described tubular steam generator, preferably, the identifier includes a pressure sensor.

In the above tubular steam generator, preferably, the identifier includes a timer for counting a time when the graphene heat generating layer enters the power-on state.

The present invention also provides a wireless steam mop, comprising:

a steam generator configured to spray steam towards a wipe of the cleaning surface and/or floor brush;

a fresh water vessel configured to supply a source of water to the steam generator;

wherein: the steam generator is a tubular steam generator as described in any one of the above; the wireless steam mop is also provided with a battery pack for supplying power to the tubular steam generator.

Compared with the prior art, the utility model has at least the following beneficial effects:

the steam generator utilizes the graphene heating layer on the metal pipe as an electric heating element, and utilizes the threads of the screw rod in the metal pipe to form a flow passage with the metal pipe, and the pipe body and the end cover of the pipe body can be combined and sealed through welding.

Compared with an MCH electric heating sheet, the metal tube is used as a base material of the graphene heating layer in the steam generator, and the metal has good toughness and the thermal expansion coefficient is closer to that of graphene, so that the metal-graphene composite electric heating element in the steam generator has the characteristics of difficult fracture and long service life. Meanwhile, the metal substrate has the characteristics of high temperature rise speed and high heat conduction speed, so that the time for water vaporization is further shortened, and particularly the time for waiting for water vaporization in the starting stage is shortened. The combined application of the metal-graphene composite electric heating element and the spiral flow channel is beneficial to outputting steam at a steam outlet in real time.

Prevent the setting of water mechanism for at the start-up stage, when water pump and graphite alkene generate heat the layer and add power, perhaps when the water pump adds power and then generates heat the layer and add power for graphite alkene earlier, steam outlet can not take place the phenomenon of leaking, consequently can avoid giving graphite alkene earlier and generate heat the dry combustion method phenomenon that the layer adds power and lead to at the start-up stage.

The combined application of the metal-graphene composite electric heating element, the spiral flow channel and the water outlet prevention mechanism shortens the time for waiting for water vaporization in the starting stage of the steam generator, can output steam at a steam outlet in real time after starting, and does not generate the phenomena of water leakage of the steam outlet and dry burning of an electric heating body in the starting stage, thereby being beneficial to the industrialization of the wireless steam mop.

Drawings

FIG. 1 is a perspective view of a tubular steam generator;

FIG. 2 is a sectional view thereof;

FIG. 3 is an exploded view thereof;

FIG. 4 is a schematic view of the first end of the screw;

FIG. 5 is a schematic view of the second end of the screw;

FIG. 6 is a schematic view of a cordless steam mop;

FIG. 7 is a schematic view of the steam supply system of the present cordless steam mop;

reference numerals:

10. a steam generator;

11. a metal tube; 12. a first end cap; 121. a water inlet; 13. a check valve; 131. a spring; 132. a valve stem; 14. a screw; 141. a first accommodating cavity; 142. a notch; 143. a through hole; 144. a step portion; 145. a second accommodating cavity; 15. a steam valve; 16. a second end cap; 161. a steam outlet; 17. a spiral flow channel;

20. a floor brush;

30. a recovery vessel;

40. a body;

50. a clear water container;

60. a handle;

70. a battery pack;

80. a pump;

90. and a control device.

Detailed Description

The utility model is further illustrated with reference to the following figures and examples.

Referring to fig. 1 to 5, the tubular steam generator 10 includes a screw 14 and a metal tube 11.

The screw 14 has threads for forming a flow passage of water, and the screw 14 is preferably made of, but not limited to, ceramic.

An insulating layer (not shown) is coated on the outer surface of the metal tube 11, the insulating layer is preferably made of a high-temperature-resistant insulating material, such as high-temperature-resistant silica gel, alumina, magnesium oxide, and the like, and a graphene heating layer (not shown) is printed or silk-screened on the insulating layer to form the metal-graphene composite electric heating element. The material of the metal tube 11 is preferably, but not limited to, stainless steel and copper.

Compared with an MCH electric heating element, the metal-graphene composite electric heating element of the embodiment has the base material of a metal tube, and the metal substrate has the characteristics of good toughness and a thermal expansion coefficient closer to that of graphene, so the metal-graphene composite electric heating element of the embodiment is not easy to break and has a long service life. Meanwhile, the metal base material also has the characteristics of high temperature rising speed and high heat conduction speed, so that the time for water vaporization can be further shortened, and particularly the time for waiting for water vaporization in the starting stage is shortened.

The metal tube 11 is sleeved on the outer side of the screw rod 14, so that a spiral flow channel 17 is formed between the thread of the screw rod 14 and the tube wall of the metal tube 11, wherein the graphene heating layer corresponds to the spiral flow channel 17, and when the graphene heating layer is electrified to heat, water flowing through the spiral flow channel 17 can be better heated.

The first end of the metal pipe 11 is welded with a first end cap 12, and the first end cap 12 has a water inlet 121 through which water is continuously supplied to the spiral flow passage 17. The second end of the metal tube 11 is welded with a second end cover 16, the second end cover 16 is provided with a steam outlet 161, and the steam of the spiral flow passage 17 can be continuously output outwards through the steam outlet 161.

The spiral flow passage 17 allows the time for the water to reach the steam outlet 161 after entering from the water inlet 121 to be greatly increased. The length of the spiral flow passage 17 satisfies the following condition: when water flows along the spiral flow channel 17 from the water inlet 121 to the steam outlet 161, the metal-graphene composite electric heating element can heat the water flow, so that the water flow is vaporized and converted into steam, and finally the steam outlet 161 outputs the steam. The cooperation of the spiral flow channel 17 with the metal-graphene composite electric heating element enables real-time steam output at the steam outlet 161.

The present tubular steam generator 10 further includes a water outflow preventing mechanism for preventing the steam outlet 161 from flowing out of water.

The water outlet prevention mechanism specifically comprises a check valve 13 arranged at the water inlet 121, and further comprises a steam valve 15 arranged at the steam outlet 161, which is conducted when the fluid at the steam outlet 161 is in a gaseous state and is closed when the fluid at the steam outlet 161 is in a liquid state.

In this embodiment, the check valve 13 is disposed at the water inlet 121 through a receiving cavity at the end of the screw 14. Specifically, a first accommodating cavity 141 is concavely formed at the first end of the screw 14 along the central axis direction of the screw 14, a notch 142 is formed at the opening edge of the first accommodating cavity 141, the valve rod 132 of the check valve 13 and the spring 131 are accommodated in the first accommodating cavity 141, and under the action of the spring 131, the head of the valve rod 132 of the check valve 13 is located between the notch 142 and the inner end of the water inlet 121, so that the spiral flow passage 17 is separated from the water inlet 121.

The steam valve 15 is disposed at the steam outlet 161 through a receiving cavity at the end of the screw 14. Specifically, a second accommodating cavity 145 is formed at the second end of the screw 14 in a recessed manner along the central axis direction of the screw 14, a through hole 143 is formed in the cavity wall of the second accommodating cavity 145, the spiral flow passage 17 is communicated with the second accommodating cavity 145 through the through hole 143, a step portion 144 is formed on the inner peripheral wall of the second accommodating cavity 145, and the steam valve 15 is installed on the step portion 144.

As an embodiment, the steam valve 15 is a pressure valve, and the opening threshold of the pressure valve is set as follows: the opening threshold of the pressure valve is less than or equal to the pressure in the metal pipe 11 when the fluid at the steam outlet 161 is in a gaseous state, and is greater than the pressure in the metal pipe 11 when the fluid at the steam outlet 161 is in a liquid state. Here, the natural law is used that the pressure in the container increases when the water is vaporized to be steam, with the volume being constant. When the fluid in the spiral flow channel 17 near the steam outlet 161 is gaseous, the air pressure in the metal tube 11 is higher, and under the action of the higher air pressure, the pressure valve is automatically conducted, and the steam is output from the steam outlet 161 after passing through the pressure valve; when the fluid in the spiral flow path 17 near the steam outlet 161 is in a liquid state, the pressure in the metal pipe 11 is low, and the pressure valve is closed by the low pressure, so that water does not leak from the steam outlet 161.

As another embodiment, the steam valve 15 is an electromagnetic valve, and further the tubular steam generator 10 further includes: an identifier for identifying whether the fluid in the spiral flow path 17 at an end thereof adjacent to the steam outlet 161 is in a liquid state; and when the identification result of the identifier is liquid, the controller controls the electromagnetic valve to enter a closed state.

The identifier is preferably a pressure sensor, and the controller judges whether the fluid is in a liquid state or a gaseous state according to the priori knowledge of the state of the fluid corresponding to the pressure value by using the pressure value output by the pressure sensor.

The identifier preferably selects a timer, the timer counts the time of the graphene heating layer entering the power-on state, and the controller determines the state of the fluid in the spiral flow channel 17 according to the priori knowledge of the power-on time required from the start of power-on of the graphene heating layer to the time of enabling the water in the spiral flow channel 17 to be converted from the liquid state to the gaseous state by utilizing the time counted by the timer.

When the controller determines that the fluid of the spiral flow passage 17 at the end close to the steam outlet 161 is in a liquid state through the identifier, the controller controls the solenoid valve to be in a closed state so that water is not leaked from the steam outlet 161.

The steam valve 15 and the check valve 13 are matched, so that when the water supply pump 80 and the graphene heating layer are powered on at the same time or the water supply pump 80 is powered on first and then the graphene heating layer is powered on, the water leakage phenomenon does not occur at the steam outlet 161. That is, in the starting stage of the steam generator 10, the electric heating element does not need to be powered up first, and when the electric heating element is preheated and then the water pump 80 is used for adding water into the steam generator 10, water leakage from the steam outlet 161 of the steam generator 10 can be avoided. The control sequence effectively avoids the dry burning phenomenon caused by electrifying the electric heating element in the starting stage, and can effectively prolong the service life.

It can be seen that the combined application of the metal-graphene composite electric heating element, the spiral flow channel 17 and the water outlet prevention mechanism shortens the time for waiting for water vaporization in the starting stage of the steam generator 10, steam can be output at the steam outlet 161 in real time after the steam generator is started, and the phenomena of water leakage of the steam outlet 161 and dry burning of the electric heating element cannot occur in the starting stage, so that the industrialization of the wireless steam mop is facilitated.

Some materials have the property of being permeable to vapor and impermeable to water. The water-outflow preventing mechanism of the tubular steam generator 10 may also be made of such a material, and the material may be disposed at the steam outlet 191 to prevent water from flowing out of the steam outlet 191.

In a preferred embodiment, the tubular steam generator 10 further comprises a magnetizer (not shown) disposed at a side of the water inlet 121 for magnetizing the water flowing toward the spiral flow passage 17. The magnetization reduces the impurities entering the metal tube 11, so that the probability of scale generation in the steam generator 10 is reduced, and the service life is prolonged.

In a preferred embodiment, the tubular steam generator 10 further comprises an ultrasonic transducer (not shown) disposed at an outer side portion of the metal tube 11 facing the spiral flow channel 17 for atomizing water in the spiral flow channel 17. After the atomization treatment, the contact area of the water and the electric heating element is diffused, thereby greatly shortening the time for converting the water into the steam.

A cordless steam mop is shown in fig. 6.

This wireless steam mop includes: the floor brush comprises a body 40, a floor brush 20 and a handle 60, wherein the floor brush 20 is hinged at the bottom end of the body 40, the angle between the body 40 and the floor brush 20 can be adjusted relative to the hinged part, the handle 60 is arranged at the top end of the body 40, and a control key is arranged on the handle 60.

The body 40 is provided with a clean water container 50 and a recovery container 30, wherein the clean water container 50 is a clean water tank, and the recovery container 30 is a sewage tank.

The wireless steam mop also comprises the tubular steam generator 10 of the above embodiment, the steam generator 10 can be arranged on the top of the floor brush 20 or inside the floor brush 20, and the steam generator 10 can also be arranged on the machine body 40.

The steam supply system of the present cordless steam mop is shown in fig. 7. The electrical signal is shown in dashed lines, water or steam is shown in dashed lines, and the flow direction is shown by the arrows. Referring to fig. 7, the water inlet 121 of the steam generator 10 is communicated with the clean water container 50 through a pump 80, a water source is supplied to the spiral flow passage 17 of the steam generator 10 through the pump 80, and the steam outlet 161 of the steam generator 10 is connected with the air nozzle of the floor brush 20 through a pipe. Wherein the air nozzles can be arranged towards the surface of the brush roll of the floor brush 20 and can also be arranged towards the cleaning ground, and one part of the air nozzles can also be arranged towards the surface of the brush roll of the floor brush 20 and the other part of the air nozzles can be arranged towards the cleaning ground.

The electric heating elements of the steam generator 10 and the pump 80 are operated under the control of the control device 90: when the start key is pressed, the control device 90 controls the pump 80 and the electric heating element to be simultaneously powered on, or the pump 80 is powered on first and then the electric heating element is powered on again, the pump 80 inputs the water in the clean water container 50 into the steam generator 10, the electric heating element heats the water in the steam generator 10 and converts the water into steam, at the moment, the steam valve is conducted, and the steam is output to the cleaning cloth for cleaning the floor or the floor brush 20 from the steam outlet 161 through the steam valve, or is output to the cleaning cloth for cleaning the floor and the floor brush 20 simultaneously.

A battery pack 70 is disposed in the body 40, and the battery pack 70 supplies power to the steam generator 10, the pump 80, and other electrical components of the steam mop.

The present invention has been described in detail with reference to the specific embodiments, and the detailed description is only for the purpose of helping those skilled in the art understand the present invention, and is not to be construed as limiting the scope of the present invention. Various modifications, equivalent changes, etc. made by those skilled in the art under the spirit of the present invention shall be included in the protection scope of the present invention.

Claims (12)

1. A tubular steam generator, comprising:

a screw;

the metal pipe is sleeved outside the screw rod and forms a spiral flow channel with the threads of the screw rod, a high-temperature-resistant insulating layer is arranged on the outer wall of the metal pipe, and a graphene heating layer is arranged on the insulating layer;

a water inlet which is arranged at one end of the metal pipe and supplies water to the spiral flow passage;

the steam outlet is arranged at the other end of the metal pipe and used for outputting steam by the spiral flow passage; and

and a water outlet prevention mechanism for preventing water from flowing out of the steam outlet.

2. The tubular steam generator of claim 1, further comprising a magnetizer disposed at a side of the water inlet for magnetizing the water flowing toward the spiral flow passage.

3. The tubular steam generator of claim 1, further comprising an ultrasonic transducer disposed at an outer side of the metal tube facing the spiral flow channel for atomizing water of the spiral flow channel.

4. The tubular steam generator of claim 1, wherein the screw is a ceramic screw.

5. The tubular steam generator of claim 1, wherein the graphene heat generating layer is disposed in correspondence with the spiral flow channel.

6. The tubular steam generator of claim 1, wherein the water outflow prevention mechanism comprises:

a check valve disposed at the water inlet; and

the steam valve is arranged at the steam outlet, is communicated when the fluid at the steam outlet is in a gaseous state and is closed when the fluid at the steam outlet is in a liquid state.

7. The tubular steam generator of claim 6, wherein the two ends of the screw are respectively recessed along the central axis of the screw to form a receiving cavity, the cavity wall of the receiving cavity is provided with a through hole or a notch, and the check valve and the steam valve are arranged through the corresponding receiving cavities.

8. The tubular steam generator of claim 6, wherein the steam valve is a pressure valve having an opening threshold set to: the opening threshold value of the pressure valve is smaller than or equal to the pressure in the metal pipe when the fluid at the steam outlet is in a gaseous state and is larger than the pressure in the metal pipe when the fluid at the steam outlet is in a liquid state.

9. The tubular steam generator of claim 6,

the steam valve is an electromagnetic valve,

the steam generator further includes:

an identifier for identifying whether the fluid at one end of the spiral flow passage near the steam outlet is in a liquid state; and

and the controller is used for controlling the electromagnetic valve to enter a closed state when the identification result of the identifier is liquid.

10. The tubular steam generator of claim 9, wherein the identifier comprises a pressure sensor.

11. The tubular steam generator of claim 9, wherein the identifier comprises a timer that counts the time the graphene heating layer enters a powered state.

12. A cordless steam mop, comprising:

a steam generator configured to spray steam towards a wipe of the cleaning surface and/or floor brush;

a fresh water vessel configured to supply a source of water to the steam generator; the steam generator is a tubular steam generator according to any one of claims 1 to 11;

the wireless steam mop is also provided with a battery pack for supplying power to the tubular steam generator.

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