CN214405996U

CN214405996U - Steam generator for removing scale

Info

Publication number: CN214405996U
Application number: CN202120344637.8U
Authority: CN
Inventors: 吴丰; 赖善昌
Original assignee: Guangdong Gajum Industrial Co ltd
Current assignee: Guangdong Gajum Industrial Co ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-10-15
Anticipated expiration: 2031-02-05

Abstract

The utility model relates to the field of steam electrical appliances, and provides a descaling steam generating device, which comprises a cavity, a valve core arranged in the cavity, and a high-frequency electromagnetic coil arranged outside the cavity, wherein a first heating channel is reserved between the valve core and the cavity, a second heating channel is arranged inside the valve core, and eddy current enables the cavity and the valve core to be heated up rapidly; wherein, rivers flow into first heating channel from the water inlet, and the steam that the rapid boiling produced under the heating condition passes through the through-hole gets into second heating channel further heating, again from the steam outlet blowout, the utility model is used for solve the easy scale deposit of traditional steam generating device and pile up and can't in time rely on self strength to discharge and the scale deposit behind unable manual clearance lead to unable normal use, heating steam outlet efficiency low, the unsatisfactory problem of vaporization effect.

Description

Steam generator for removing scale

Technical Field

The utility model relates to a technical field of steam electrical apparatus, more specifically relates to a steam generator of incrustation scale.

Background

Steam generators are mechanical devices that use the heat energy of a fuel or other energy source to heat water into hot water or steam. The steam generators are classified according to their sizes, and may be classified into an instant heating type steam generator and a boiler type steam generator. The instant heating type steam generator belongs to small equipment and is mainly used in daily life; the boiler type steam generator is generally applied to industrial production, such as thermal power stations, ships, locomotives, industrial and mining enterprises and the like. The instant heating type steam generator adopts a direct-current steam generation technology, so that once tap water is subjected to heat exchange, steam is instantly generated, and the beneficial effects of instant heating after opening, no preheating, safety and convenience are realized.

With the development of science and technology, the instant heating type steam generator is more and more widely applied in the life of people, the requirement of people on the instant heating type steam generator is higher and higher, but the steam generated by the existing instant heating type steam generator is low in temperature and low in dryness; insufficient heat energy utilization, low heating steam outlet efficiency, unsatisfactory vaporization effect, inconvenient use and incapability of meeting the requirements of people. Accordingly, there is an urgent need for improved construction of existing tankless steam generators.

On the other hand, in the conventional steam generator, after a certain period of time, since impurities in water are converted into scale after the water is heated, the scale is adhered to the inner flow passage and the steam outlet hole of the steam generator. After long-term use, most areas on the surface of the heating main body are covered by the water scale, the heat transfer effect is influenced, the energy consumption of the steam generator is increased, the function of the steam generator is influenced by water scale blockage, and explosion danger can occur in serious cases.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at overcoming above-mentioned prior art's at least one defect (not enough), provide a steam generator of incrustation scale for solve traditional steam generator easy scale deposit pile up and can't in time rely on self strength to discharge and the unable manual clearance after the scale deposit lead to unable normal use, heating play vapour inefficiency, the unsatisfactory problem of vaporization effect.

The technical scheme adopted by the utility model is that, a descaling steam generator, including cavity, the case set in the cavity, set up the high frequency solenoid outside the cavity, leave the first heating channel between case and the cavity, the case is inside to be equipped with the second heating channel, the high frequency solenoid is connected with external power mainboard electricity, produces the alternating electric field, and the vortex makes cavity and case heat up fast, the cavity bottom is provided with the water inlet, the water inlet with the first heating channel communicates, the case top is provided with the steam outlet, case upper portion lateral wall is provided with the through-hole; and water flow flows into the first heating channel from the water inlet, steam generated by rapid heating of the first heating channel enters the second heating channel through the through hole for further heating, and then is sprayed out from the steam outlet.

In the technical scheme, a high-frequency electromagnetic coil outside a cavity is electrically connected with an external power supply main board to generate an alternating electric field, the wall surfaces of a first heating channel and a second heating channel generate heat due to the action of eddy current, water flow enters the first heating channel from a water inlet and is heated, water rapidly boils due to the narrowness of the first heating channel to generate pressure, the water content of a water-vapor mixture generated by water boiling is greatly reduced after the water-vapor mixture is heated in the first heating channel, the water-vapor mixture enters the second heating channel through a through hole under the action of the pressure and flows into the second heating channel to be further heated, when steam in the second heating channel is accumulated in the whole channel, the steam is changed into saturated steam through the change of speed and the section area of a passage for several times according to the fluid flow principle and the Bernoulli principle, and because the inner wall and the outer wall of the second heating channel are eddy current heating bodies, therefore, the second heating channel can be efficiently heated, the interior of the second heating channel is closed, the water is sprayed out from the steam outlet when the pressure reaches a certain degree, the technical scheme heats the water in the long and narrow first heating channel, water flow is uniformly heated, the heating efficiency is high, the steam generating speed is accelerated, the steam generated after the first heating channel is heated enters the second heating channel to be further heated, the sprayed steam is ensured to reach a saturated state, the vaporization effect is ideal, in addition, the flowing of the steam and the pressure inside the first heating channel ensure that scale formation in the first heating channel is not attached to the wall surface of the first heating channel along with the movement of the steam, the scale formation finally flows out from the steam outlet along with the flowing of the steam, and the problems that scale is accumulated and cannot be discharged by self power in time are solved.

In the technical scheme, in the whole heating process, the water flow and steam mixture wraps the outer wall of the core valve core. The temperature can be more effectively controlled within a reasonable range, and risks are avoided.

Furthermore, the wall surfaces of the inner wall of the cavity and the outer wall of the valve core are smooth.

In the technical scheme, the inner wall of the cavity and the outer wall of the valve core are smooth, the smooth wall surface enables scale to be difficult to adhere to, the scale is difficult to form and accumulate on the wall surface, the heating channel enables fluid circulation efficiency to be high smoothly, scale forming objects are difficult to adhere to the wall surface of the first heating channel, in the fluid flowing process, the scale flows out from the steam nozzle along with steam, and is taken away from the steam generating device, so that the scale in the steam generating device is cleaned in time, blockage caused by accumulation of the scale in the first heating channel is avoided, the performance of the steam generating device is guaranteed, fluid flowing in the steam generating device is smooth, and the speed and the quality of steam generation are guaranteed.

Furthermore, a flow guide valve body is arranged at the upper part of the valve core, the flow guide valve body comprises a first flow guide valve body and a second flow guide valve body which are connected, the first flow guide valve body is positioned above the second flow guide valve body, a check one-way valve is arranged in the first flow guide valve body, a steam nozzle is arranged at the top of the first flow guide valve body, a steam outlet channel is arranged in the second flow guide valve body, and the second flow guide valve body extends into the second heating channel; the second diversion valve body can guide the steam entering from the through hole into the second heating channel.

In the technical scheme, saturated steam generated by the second heating channel flows into the steam outlet channel, because the caliber of the steam outlet channel is smaller, according to the Bernoulli principle, when the saturated steam enters the steam outlet channel, the flow rate is faster, so that pressure difference is generated between the steam outlet channel and two ends of a steam outlet which are separated by the check one-way valve, the check one-way valve is opened due to the pressure difference, the saturated steam is sprayed out from the steam outlet through the steam outlet channel and the check one-way valve, and the check one-way valve is arranged, so that external water flow and gas inflow of the steam outlet are prevented, and the saturation of the steam is ensured.

In this technical scheme, in the second water conservancy diversion valve body extends to the second heating channel, the second water conservancy diversion valve volume is less than the second heating channel, form the space with second heating channel upper portion lateral wall, this space makes steam in the first heating channel get into the second heating channel after the through-hole, down flow to the further heating of second heating channel bottom, prevent that the unsaturated steam that flows into the second heating channel from first heating channel from not flowing through steam outlet channel blowout from steam outlet directly without the further heating of second heating channel, the setting of second water conservancy diversion valve body has improved steam outflow's pressure and temperature, it is high temperature high pressure saturated steam to have guaranteed that spun steam.

Furthermore, the through holes are circumferentially formed in the side wall of the upper portion of the valve core, so that the circulation efficiency of steam is improved.

Furthermore, a longitudinal partition is arranged in the second heating channel to divide the second heating channel into a plurality of longitudinal chambers, and the height of the partition is lower than the lower end of the second diversion valve body.

In this technical scheme, separate the second heating channel for the fore-and-aft cavity of a plurality of through vertical separator, the volume of cavity is less than the second heating channel's, and the steam flow in the cavity is to more stable, and it is more even to be heated, and the cooperation of a plurality of cavity and a plurality of through-hole has accelerated saturated steam's formation speed, and the vaporization effect is more ideal.

In this technical scheme, be provided with temperature control device on the separator, temperature control device is through the steam temperature in the monitoring second heating channel, and then adjusts heating power, ensures that the temperature in the heating channel is enough to produce saturated steam fast.

Furthermore, the first heating channel is divided into a primary form conversion chamber, a middle-end expansion chamber and a rear-stage vaporization chamber according to the change state of water flow passing through, the primary form chamber is used for heating water to generate a water-vapor mixture, the middle-end expansion chamber is used for heating the water-vapor mixture to generate primary steam, the rear-stage vaporization chamber is used for further heating the primary steam, and the primary steam enters the second heating channel through the through hole and is further heated to form saturated steam to be sprayed out from the steam outlet.

Among this technical scheme, because the wall heating of the first heating channel of vortex effect, water flows into during the first heating channel, by rapid heating, at this moment, rivers are in the elementary form conversion room of first heating channel, the rivers volume grow that is heated, convert the steam mixture into, the steam mixture should change the volume and constantly upwards flow, it further heats to get into middle-end expansion chamber, the steam mixture water content reduces, form elementary steam, continue to upwards flow again, get into the rear stage vaporizing chamber, elementary steam further heats again, make elementary steam water content greatly reduced, the elementary steam that the water content reduces gets into the second heating channel, flow into the second heating channel bottom further heating back, form saturated steam, upwards flow, go out the vapour passageway through steam, the check valve, spout from the steam outlet.

Furthermore, the cavity is a diversion high-pressure quartz tube, the smoothness of the cavity is extremely high, and due to the viscosity of fluid, scale is not easily adhered to the diversion high-pressure quartz tube, so that generated scale forming objects are taken out of the steam generating device under the motion pressure of the cavity, the scale is reduced, a small amount of scale adhered to the outer wall of the valve core can be directly cleaned after the valve core is disassembled.

Furthermore, a coil support used for mounting the high-frequency electromagnetic coil is arranged between the cavity and the high-frequency electromagnetic coil, and a shielding magnetic strip used for shielding electromagnetic radiation is arranged on the outer wall of the high-frequency electromagnetic coil.

Further, a heat insulation cavity is arranged between the cavity and the coil support, and a heat insulation piece is arranged in the heat insulation cavity. In the technical scheme, the heat insulation cavity is arranged between the heating channel and the high-frequency electromagnetic coil, so that the cavity and the valve core are heated under the action of eddy current to act on the first heating channel and the second heating channel and are not diffused, meanwhile, the external part of the steam generating device is prevented from being overhigh in temperature due to heat diffusion, and the use safety of the steam generating device is ensured.

The utility model discloses a nut is passed through with case upper portion on cavity upper portion and is connected, through front end cover and first sealing washer, rear end cover and second sealing washer, with the case, the cavity, thermal-insulated chamber, a steam generator of coil support connection constitution, make the interior gas tightness of heating channel good, on the other hand, through with its back of pulling down the case from front end cover department coupling nut department, can clean remaining incrustation scale on cavity inner wall and the case outer wall, detachable structure and smooth wall make cleaning more simple and convenient.

Compared with the prior art, the beneficial effects of the utility model are that: this technical scheme establishes the case in the cavity, and the first heating passageway confession rivers between through case and the cavity pass through, and utilizes the vortex principle, makes rivers constantly be heated the evaporation through constrictive first heating passageway in-process, and constrictive space makes the heating of rivers more even more abundant, makes the quick boiling of rivers, and steam gets into further heating evaporation behind the second heating passageway and is saturated vapor, has that heating efficiency is fast, the steam capacity is big and safe and reliable's beneficial effect.

In the technical scheme, the inner wall of the cavity and the outer wall of the valve core are smooth, the scale is difficult to adhere to, the scale is difficult to form and pile up on the wall, the heating channel smoothly makes the fluid circulation efficient, the scale formation object is difficult to adhere to on the wall of the first heating channel, the fluid flows in-process, flow out from the steam nozzle along with steam together, the steam generation device is taken away from, the scale in the steam generation device is cleaned in time, the blockage caused by the scale piling up in the first heating channel is avoided, the performance of the steam generation device is ensured, the fluid flows smoothly in the steam generation device, the speed and the quality of steam generation are ensured, in addition, the detachable valve core enables the inner wall of the cavity and the valve core to be further cleaned, and the steam generation device is ensured to maintain the best working state for a long time.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

Fig. 2 is a schematic view of the flow direction of the fluid according to the present invention.

Reference numerals: the steam heating device comprises a water inlet 1, a steam outlet 2, a cavity 3, a front end cover 31, a first sealing ring 32, a second sealing ring 33, a rear end cover 34, a valve core 4, a through hole 41, a second heating channel 42, a flow guide valve body 43, a first flow guide valve body 431, a check one-way valve 4311, a second flow guide valve body 432, a steam outlet channel 4321, a nut 44, a partition 45, a first heating channel 5, a primary form conversion chamber 51, a middle expansion chamber 52, a rear stage vaporization chamber 53, a heat insulation chamber 6, a high-frequency electromagnetic coil 7, a coil support 8 and a shielding magnetic strip 9.

Detailed Description

The drawings of the present invention are for illustration purposes only and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Examples

As shown in fig. 1, the present embodiment provides a scale-removing steam generator, which includes a cavity 3, a valve core 4 disposed in the cavity 3, and a high-frequency electromagnetic coil 7 disposed outside the cavity 3, wherein a coil support 8 for mounting the high-frequency electromagnetic coil 7 is disposed between the cavity 3 and the high-frequency electromagnetic coil 7, a shielding magnetic stripe 9 for shielding electromagnetic radiation is disposed on an outer wall of the high-frequency electromagnetic coil 7, a heat insulation cavity 6 is disposed between the cavity 3 and the coil support 8, and an upper portion of the cavity 3 is connected to an upper portion of the valve core 4 through a nut 44.

Specifically, the volume of the valve core 4 is slightly smaller than the internal volume of the cavity 3, a long and narrow first heating channel 5 is left between the valve core 4 and the cavity 3, a second heating channel 42 is arranged inside the valve core 4, a water inlet 1 is arranged at the bottom of the cavity 3, the water inlet 1 is communicated with the first heating channel 5, a steam outlet 2 is arranged at the top of the valve core 4, a through hole 41 is arranged on the side wall of the upper part of the valve core 4, and a temperature control device is arranged in the heat insulation cavity 6.

Specifically, the first heating passage 5 is divided into a primary form conversion chamber 51, a middle expansion chamber 52, and a rear stage vaporization chamber 53 according to a change state of the water flow passing therethrough.

Specifically, the upper portion of the valve core 4 is provided with a flow guide valve body 43, the flow guide valve body 43 is respectively a first flow guide valve body 431 and a second flow guide valve body 432, the first flow guide valve body 431 is located above the second flow guide valve body 432, a check one-way valve 4311 is arranged in the first flow guide valve body 431, the top of the first flow guide valve body 431 is a steam nozzle, a steam outlet channel 4321 is arranged in the second flow guide valve body 432, and the second flow guide valve body 432 extends into the second heating channel 42.

In this embodiment, in order to ensure the upper parts of the first heating channel 5 and the second heating channel 42 to be in a sealed state, so that the heating channels can have enough pressure to control the flow direction of steam, the upper part of the cavity 3 and the upper part of the valve core 4 are further connected with the front end cover 31 and the first sealing ring 32; the bottom of the cavity 3 is provided with a rear end cover 34 and a second sealing ring 33, the water inlet 1 is arranged on the rear end cover 34, and the detachable rear end cover 34 enables the lower part of the cavity 3 to be cleaned more easily.

In order to improve the circulation efficiency of the steam, a plurality of through holes 41 are formed along the circumferential direction of the side wall of the upper part of the valve core.

In this embodiment, a longitudinal partition 45 is disposed in the second heating passage 42, the second heating passage 42 is divided into a plurality of longitudinal chambers, the partition 45 passes through the rear end cover 34 and the bottom of the valve core 4 and extends into the second heating passage 42, the height of the partition 45 is lower than the lower end of the second flow guide valve body 432, and specifically, the partition 45 may be a temperature sensor.

In order to reduce the accumulation of scale and facilitate cleaning, the inner wall of the cavity 3 and the outer wall of the valve core 4 have smooth wall surfaces, and the outer wall of the valve core 4 can be made of stainless steel.

Specifically, the cavity 3 is a diversion high-pressure quartz tube, the smoothness of the cavity is extremely high, and due to the viscosity of fluid, scale is not easily adhered to the diversion high-pressure quartz tube, so that generated scale forming objects are taken out of the steam generating device under the motion pressure of the cavity, the scale is reduced, a small amount of scale adhered to the outer wall of the valve core 4 can be directly cleaned after being detached.

As shown in fig. 2, in this embodiment, the high-frequency electromagnetic coil 7 outside the cavity 3 is electrically connected to an external power main board to generate an alternating electric field, due to the eddy current effect, the walls of the first heating channel 5 and the second heating channel 42 generate heat, water flow enters the first heating channel 5 from the water inlet 1 at the bottom of the cavity 3 and is heated, water boils rapidly to generate pressure, and a water-vapor mixture generated by water boiling flows upward along the first heating channel 5 and flows into the second heating channel 42 through the through hole 41 to be further heated to form saturated steam to be sprayed out from the steam outlet 2.

Specifically, the first heating channel 5 is divided into a primary form conversion chamber 51, a middle expansion chamber 52 and a rear vaporization chamber 53 according to the change state of water flow passing through, the primary form chamber is used for heating water to generate a water vapor mixture, the middle expansion chamber 52 is used for heating the water vapor mixture to generate primary steam, the rear vaporization chamber 53 is used for further heating the primary steam, the water flow enters the primary form conversion chamber through the water inlet 1, the heated water flow is increased in volume and converted into the water vapor mixture, the water vapor mixture continuously flows upwards due to the change of volume and enters the middle expansion chamber 52 for further heating, the water content of the water vapor mixture is reduced to form primary steam, the primary steam continues to flow upwards and enters the rear vaporization chamber 53, the primary steam is further heated, the water content of the primary steam is greatly reduced, and the primary steam with the reduced water content enters the second heating channel 42, according to the fluid flow principle and Bernoulli principle, the steam flows into the bottom of the second heating channel 42 for further heating, the vaporized steam forms saturated steam through several changes of speed and section area of the channel, flows upwards, passes through the steam outlet channel 4321 and the check valve 4311, and is sprayed out from the steam outlet 2.

Specifically, the saturated steam generated by the second heating channel 42 flows into the steam outlet channel 4321, and since the caliber of the steam outlet channel 4321 is small, according to bernoulli's principle, when the saturated steam enters the steam outlet channel 4321, the flow rate becomes fast, so that a pressure difference is generated between the two ends of the steam outlet channel 4321 and the steam outlet 2 separated by the check one-way valve 4311, the check one-way valve 4311 opens due to the pressure difference, the saturated steam is ejected from the steam outlet 2 through the steam outlet channel 4321 and the check one-way valve 4311, and the check one-way valve 4311 is arranged, so that the water flow and the gas flow outside the steam outlet 2 are prevented, and the saturation of the steam is ensured.

Specifically, the second flow valve 432 extends into the second heating channel 42, the second flow valve 432 is smaller than the second heating channel 42, and forms a space with the upper side wall of the second heating channel 42, the space enables the steam in the first heating channel 5 to flow downward to the bottom of the second heating channel 42 for further heating after entering the second heating channel 42 through the through hole 41, so that the unsaturated steam flowing into the second heating channel 42 from the first heating channel 5 is prevented from directly flowing through the steam outlet channel 4321 and being ejected from the steam outlet 2 without further heating of the second heating channel 42, and the ejected steam is high-temperature and high-pressure saturated steam.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not limitations to the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A descaling steam generating device comprises a cavity, a valve core arranged in the cavity and a high-frequency electromagnetic coil arranged outside the cavity, wherein a first heating channel is reserved between the valve core and the cavity, a second heating channel is arranged inside the valve core, the high-frequency electromagnetic coil is electrically connected with an external power supply main board to generate an alternating electric field, and eddy current enables the cavity and the valve core to be rapidly heated;

and water flow flows into the first heating channel from the water inlet, steam generated by rapid heating of the first heating channel enters the second heating channel through the through hole for further heating, and finally is sprayed out from the steam outlet.

2. The scale-removing steam generating device as claimed in claim 1, wherein the upper part of the valve core is provided with a flow guide valve body, the flow guide valve body comprises a first flow guide valve body and a second flow guide valve body which are connected, the first flow guide valve body is positioned above the second flow guide valve body, a check one-way valve is arranged in the first flow guide valve body, the top of the first flow guide valve body is provided with a steam nozzle, the second flow guide valve body is internally provided with a steam outlet channel, and the second flow guide valve body extends into the second heating channel; the second diversion valve body can guide the steam entering from the through hole into the second heating channel.

3. The steam generator for removing scale as claimed in claim 1, wherein said through holes are provided in a plurality along the circumference of the upper side wall of said valve body.

4. The steam generator for removing scale as claimed in claim 2, wherein a longitudinal partition member is provided in the second heating passage to partition the second heating passage into a plurality of longitudinal chambers, and the height of the partition member is lower than the lower end of the second deflector.

5. The scale-removing steam generator as claimed in claim 1, wherein the first heating channel is divided into a primary form conversion chamber for heating the water to generate the water-vapor mixture, a middle expansion chamber for heating the water-vapor mixture to generate the primary steam, and a rear vaporization chamber for further heating the primary steam, the primary steam enters the second heating channel through the through hole and is further heated to form saturated steam, and the saturated steam is ejected from the steam outlet.

6. The steam generator as claimed in claim 1, wherein the inner wall of the chamber and the outer wall of the valve core are smooth.

7. The scale-removing steam generator as claimed in claim 6, wherein the chamber is a flow-guiding high-pressure quartz tube.

8. The steam generator for removing scale as claimed in claim 1, wherein a coil support for mounting the high frequency electromagnetic coil is disposed between the chamber and the high frequency electromagnetic coil, and a shielding magnetic stripe for shielding electromagnetic radiation is disposed on an outer wall of the high frequency electromagnetic coil.

9. A scale removing steam generator as claimed in claim 8, wherein a thermally insulating chamber is provided between the chamber and the coil support.

10. The steam generator for removing scale as claimed in claim 1, wherein the upper part of the valve core is connected with the upper part of the chamber by a nut.