CN215260536U - Liquid electromagnetic heating device and tooth flushing device - Google Patents

Abstract

The utility model relates to a liquid electromagnetic heating device and a tooth flushing device, wherein the liquid electromagnetic heating device comprises a first shell, a second shell, an electromagnetic heating component and a sealing connecting piece, and the first shell and the second shell enclose to form a closed heating channel for transporting liquid by using pressure difference between two ends; the electromagnetic heating assembly comprises a metal rod and an induction coil, and the metal rod is arranged in the heating channel; the utility model utilizes the induction coil to generate alternating magnetic field to make the metal bar generate eddy current to generate heat, and directly heats the liquid flowing in the heating channel, thereby realizing instant heating; the sealing connecting piece is respectively enclosed with the first shell and the second shell to form an airtight cavity, the heating channel and the electromagnetic heating assembly are both positioned in the cavity, water vapor or water drops outside the liquid electromagnetic heating device can be prevented from entering the electromagnetic heating assembly and other electric-related structures, so that the problem of electric shock hazard is caused, and the safety performance is effectively improved.

Description

Liquid electromagnetic heating device and tooth flushing device

Technical Field

The utility model relates to the technical field of household appliances, in particular to a liquid electromagnetic heating device and a tooth flushing device.

Background

Products using heaters such as water dispensers, bathroom water heaters, water taps and the like have instantaneous heating and waterproof requirements, but most of the existing instantaneous liquid heating devices adopt technologies such as thin film heating, thick film heating, PTC and the like to realize liquid heating, and the temperature response speed is slow.

The tooth flusher is an auxiliary tool for cleaning the oral cavity, and flushes teeth and teeth gaps through pulse water flow generated under certain pressure, and the excellent cleaning effect of the tooth flusher is widely accepted by the public. Towards tooth ware for utilizing the impact force that high-speed water column carried to clear away the food detritus of jam in the tooth seam to avoid food detritus to produce the foreign matter sensation at the tooth seam, cause the discomfort, and food detritus remains for a long time and breeds the bacterium easily in the oral cavity, and lead to producing dental plaque, the easy calcification of long-term accumulation of dental plaque, and form dental calculus and gather at root of a tooth portion, oppression and amazing periodontal environment, lead to the periodontal atrophy. For users with sensitive teeth or gums, the pressure of the pulse water flow needs to be adjusted in a targeted mode, the user is easily uncomfortable due to low water temperature, the convenience of use is greatly reduced due to the fact that warm water is prepared additionally, and user experience is affected. In the prior art, a liquid heater is arranged in a tooth flushing device to heat liquid, so that the temperature of generated pulse water flow is increased, and discomfort of a user is avoided.

Aiming at the requirements of the household appliance equipment on instant heating, most of liquid heaters on the market at present belong to a class I appliance in the safety standard of the household appliance, namely, the grounding protection is added through a power line under basic insulation, but for the household appliance such as a tooth flushing device and the like, as the portable design is required to be met, the liquid heaters are generally in a charging type structure, as the water storage structure and a liquid channel are required to be arranged in the household appliance, and the general use scene is a wading environment, in order to ensure the safety, the high safety requirements are required, and the class II appliance realizes reinforced insulation or double insulation under the condition of no grounding protection. Most of the existing liquid heaters cannot meet the insulation requirements of II-type appliances, dry burning and sealing failure easily occur when the existing liquid heaters are heated under abnormal conditions without water, namely after basic insulation failure, water flows into an electromagnetic coil to cause electric shock hazard, and a small part of heaters meeting the requirements of II-type appliances have low heating efficiency and cannot meet the requirement of instantaneous heating.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a liquid electromagnetic heating device, it has simple structure, the high just advantage that the security performance of heating efficiency is high.

An electromagnetic liquid heating device comprises a first shell, a second shell, an electromagnetic heating assembly and a sealing connecting piece; the first shell and the second shell are fixed and enclose to form a closed heating channel for transporting liquid by using pressure difference between two ends; the electromagnetic heating assembly comprises a metal rod and an induction coil, and the metal rod is arranged in the heating channel; the inductance coil is sleeved outside the heating channel; the induction coil is electrically connected with an alternating frequency power supply and can generate an alternating magnetic field, and the metal rod is positioned in the alternating magnetic field and generates eddy current to generate heat; the sealing connecting piece is respectively fixed with the first shell and the second shell and encloses to form a closed cavity, and the heating channel and the electromagnetic heating assembly are both positioned in the cavity.

The embodiment of the utility model provides a liquid electromagnetic heating device, it adopts the electromagnetic heating technique, directly sets up the metal rod in heating the passageway, and be used for producing alternating magnetic field through inductance coils's setting, make the metal rod produce the vortex and generate heat in alternating magnetic field, directly heat the liquid that flows in the heating passageway, and heating efficiency is high, can satisfy the demand of instant heating; in addition, through the arrangement of the sealing connecting piece, the sealing connecting piece is fixed with the first shell and the second shell to form a closed cavity, the heating channel and the electromagnetic heating assembly are both positioned in the cavity, and water vapor or water drops outside the liquid electromagnetic heating device can be prevented from entering into electric shock structures such as the electromagnetic heating assembly, so that the problem of electric shock hazard is caused, the safety performance is effectively improved, and the requirement for use in the water shock environment is met.

Further, the fuse-link is also included; the fuse piece is arranged on the first shell, and two sides of the fuse piece are respectively communicated with the heating channel and the outside; the metal rod is abutted against the inner side of the fuse-link, and when the metal rod is in a dry-burning state, the metal rod fuses through the fuse-link and enables the heating channel to be communicated with the outside. Through the setting of fuse-link, the produced high temperature of metal rod when unusual dry combustion method can be with its fusing, and makes heating channel and external intercommunication lead to it to be used for carrying the pressure differential of liquid because of leaking gas and can't produce, and liquid can't normally flow, effectively prevents that the unexpected outflow of liquid of high temperature and then causes the injury etc. to the user, and the security performance is high, and simple structure is favorable to reducing the production and processing cost.

Furthermore, the heating channel sequentially comprises a water inlet section, a heating section and a water outlet section along the liquid flowing direction; the first shell comprises a fixing part and a shell body, and the water inlet section penetrates through the fixing part; the shell body is of a hollow cylindrical structure, an inner hole of the shell body is the heating section, and the inductance coil is sleeved outside the shell body; one end of the shell body is fixedly connected with the fixing part, and the other end of the shell body is movably clamped on the second shell; the water outlet section is arranged in the second shell in a penetrating mode, the structure is simple due to the arrangement, occupied space is reduced, and the development trend of portability of household appliances is adapted.

Further, the metal rod comprises a metal rod main body, a first assembling end and a second assembling end, wherein the first assembling end and the second assembling end are fixed at two ends of the metal rod main body; the water inlet section is of an L-shaped structure and comprises a first water inlet section and a second water inlet section along the flowing direction of liquid, the inner diameter of the second water inlet section is matched with the outer diameter of the first assembling end, and the first assembling end penetrates through the second water inlet section and is abutted against the side wall of the first water inlet section; the second assembling end is movably clamped on the water outlet section; the fuse-link with the plastic part of first casing formula as an organic whole, the fuse-link be the lateral wall of first section of intaking with the region of first assembly end contact, this sets up the processing production of being convenient for, helps reduce cost.

Further, the electromagnetic heating assembly further comprises an elastic piece; the inner diameter of the end part of the water outlet section is gradually reduced from one end connected with the heating section to the other end, the second assembling end penetrates through the water outlet section, the elastic piece is sleeved at the second assembling end which is in a compression state, and the two ends of the elastic piece are respectively abutted against the side wall of the water outlet section and the metal rod main body. The elastic piece is arranged to ensure that the first assembling end is abutted against the fuse piece, so that the fuse piece can be fused when the metal rod is abnormally dried.

Further, the induction heating coil comprises an insulating heat conduction protection pipe, wherein the insulating heat conduction protection pipe is sleeved between the heating channel and the induction coil. The insulating heat conduction protection tube is used for protecting the inductance coil, excessive heat is generated when the metal rod is abnormally dried, the shell body is accidentally fused, the insulating heat conduction protection tube can avoid electric shock safety accidents caused by direct contact of hot water in the heating section of the heating channel and the inductance coil, and the safety performance of the device is further improved.

The temperature control element is arranged on the outer surface of the insulating heat conduction protection tube; the temperature control element detects the temperature of the insulating heat conduction protection tube and controls the on/off of a circuit between the inductance coil and the alternating-frequency power supply; the temperature control element is preset with a temperature threshold value, the measured temperature is compared with the temperature threshold value, when the measured temperature is higher than the temperature threshold value, a circuit between the inductance coil and the alternating-frequency power supply is disconnected, and when the measured temperature is not higher than the temperature threshold value, a circuit between the inductance coil and the alternating-frequency power supply is closed. The temperature control element can detect the temperature of the insulating heat conduction protection tube, can automatically identify temperature abnormity and cut off a circuit between the induction coil and the alternating-frequency power supply, stops heating of the metal rod, avoids the situation that the first shell is burnt through due to overhigh temperature of the metal rod, and further improves the safety performance of the device.

Furthermore, the sealing connecting piece is a potting adhesive shell, and a potting adhesive is poured into the cavity. The pouring sealant can play a role in enhancing insulation, effectively prevents the battery coil from being in direct contact with liquid in the heating channel or outside the device, and further improves the safety performance.

Further, the device also comprises a waterproof piece; the shell is glued to the embedment and is the cavity tubular structure, second casing block wears to locate the shell is glued to the embedment, waterproof set up in the second casing with between the shell is glued to the embedment, play waterproof sealing effect.

In addition, the embodiment of the utility model provides a still provide a tooth flushing device, it includes above liquid electromagnetic heating device.

The embodiment of the utility model provides a tooth flushing device, it has the instant heating function, and heats response speed fast, and heating efficiency is high, and it can produce warm pulse rivers fast and be used for carrying out the oral cavity cleanness, can reduce the stimulation to the oral cavity, improves and uses experience, just its insulating nature of liquid electromagnetic heating device is strong, and the security performance is high, accords with the requirement of domestic appliance II class utensil.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a perspective view of a liquid electromagnetic heating device according to embodiment 1 of the present invention;

fig. 2 is a front view of a liquid electromagnetic heating device according to embodiment 1 of the present invention;

fig. 3 is a longitudinal sectional view of the liquid electromagnetic heating device according to embodiment 1 of the present invention;

fig. 4 is a longitudinal sectional view of the liquid electromagnetic heating device according to embodiment 1 of the present invention;

fig. 5 is an exploded schematic view of a liquid electromagnetic heating device according to embodiment 1 of the present invention;

fig. 6 is a schematic structural view of the first housing according to embodiment 1 of the present invention;

fig. 7 is a schematic structural view of the inductance coil and the first housing according to embodiment 1 of the present invention;

fig. 8 is a schematic structural view of the inductance coil, the first housing and the second housing according to embodiment 1 of the present invention;

fig. 9 is a schematic structural view of the insulating heat-conducting protection tube and the temperature control element according to embodiment 1 of the present invention;

fig. 10 is a schematic view of pouring sealant according to embodiment 1 of the present invention.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1

The embodiment 1 of the utility model provides a liquid electromagnetic heating device, it is applicable to the domestic appliance field, and applicable product has instant heating type warm water towards tooth ware, instant heating type drinking water (or beverage) machine, instant heating type bathroom heater, instant heating tap etc. and it has simple structure, the high just advantage that the security performance is high of heating efficiency.

Referring to fig. 1-5, fig. 1 is a perspective view of a liquid electromagnetic heating device according to embodiment 1 of the present invention, fig. 2 is a front view of a liquid electromagnetic heating device according to embodiment 1 of the present invention, fig. 3 is a longitudinal schematic view of a liquid electromagnetic heating device according to embodiment 1 of the present invention, fig. 4 is a longitudinal schematic view of a liquid electromagnetic heating device according to embodiment 1 of the present invention, fig. 5 is an explosion schematic view of a liquid electromagnetic heating device according to embodiment 1 of the present invention, as shown in the figure, the liquid electromagnetic heating device includes a first shell 10, a second shell 20, an electromagnetic heating assembly and a sealing connector 80, the first shell 10 and the second shell 20 are detachably fixed and enclose to form a closed heating channel 40 for transporting liquid by using a pressure difference between two ends; the electromagnetic heating assembly comprises a metal rod 31 and an induction coil 33, wherein the metal rod 31 is arranged in the heating channel 40; the inductance coil 33 is spirally sleeved outside the heating channel 40; the inductance coil 33 is electrically connected with an alternating frequency power supply and can generate an alternating magnetic field, and the metal bar 31 is positioned in the alternating magnetic field and generates eddy current to generate heat; the sealing connector 80 is detachably fixed to the first housing 10 and the second housing 20, respectively, and encloses a closed cavity, in which the heating channel 40 and the electromagnetic heating element are located.

The embodiment 1 of the present invention provides an electromagnetic liquid heating device, which adopts an electromagnetic heating technology, directly sets a metal rod in a heating channel, and is used for generating an alternating magnetic field through the setting of an inductance coil, so that the metal rod generates a vortex in the alternating magnetic field to generate heat, and directly heats the liquid flowing in the heating channel, and the electromagnetic liquid heating device has high heating efficiency, and can meet the demand of instant heating; in addition, through the arrangement of the sealing connecting piece, the sealing connecting piece is detachably fixed with the first shell and the second shell to form a closed cavity, the heating channel and the electromagnetic heating assembly are both positioned in the cavity, and water vapor or water drops outside the liquid electromagnetic heating device can be prevented from entering the electromagnetic heating assembly and other electricity-related structures, so that the problem of electric shock hazard is caused, the safety performance is effectively improved, and the requirement for use in the water-related environment is met.

As an optional implementation manner, the liquid electromagnetic heating device further includes a fuse, the fuse is disposed in the first casing 10, and two sides of the fuse are respectively communicated with the heating channel 40 and the outside; the metal rod 31 abuts against the inner side of the fuse element, and fuses through the fuse element when the metal rod 31 is in a dry-fire state, and the heating channel is communicated with the outside. Through the setting of fuse-link, the produced high temperature of metal rod 31 when unusual dry combustion method can be with its fusing to make heating channel 40 and external intercommunication, lead to it because of gas leakage can't produce the pressure differential that is used for carrying liquid, the unable normal flow of liquid effectively prevents that the unexpected outflow of heating channel 40 of too high temperature and then causes the injury etc. to the user, the security performance is high, and simple structure is favorable to reducing the production and processing cost.

Specifically, the cross section of the heating channel 40 is circular, and the metal rod 31 is a cylindrical structure and is disposed in the heating channel 40 along the extending direction of the heating channel 40, so that the metal rod 31 can uniformly heat the liquid flowing through the heating channel 40, and is convenient for processing and forming.

The heating channel 40 comprises a water inlet section 41, a heating section 42 and a water outlet section 43 in sequence along the liquid flow direction. Referring to fig. 6, fig. 6 is a schematic view of the first housing structure according to embodiment 1 of the present invention, as shown in the figures, the first housing 10 includes a housing body 11 and a fixing portion 12, the housing body 11 is a hollow cylindrical structure, an inner hole thereof is a heating section 42, an inductance coil 33 is sleeved outside the housing body 11, specifically, referring to fig. 7-8, fig. 7 is a schematic view of the inductance coil and the first housing structure according to embodiment 1 of the present invention, fig. 8 is a schematic view of the inductance coil, the first housing and the second housing structure according to embodiment 1 of the present invention, as shown in the figures, the inductance coil 33 is fixedly sleeved outside the housing body 11 by using a fixing structure, which may be a band, a rope, a fixing device or an article, etc., in this embodiment, the fixing band 34, the number of which is 1, in other embodiments, may be a plurality, to ensure stability of the fixation. The fixing part 12 is fixedly connected with one end of the shell body 11, and the water inlet section 41 penetrates through the fixing part 12; the surface of the second casing 20 is provided with an annular groove (not shown) matching with the casing body 11, the water outlet section 43 is arranged in the second casing 20 in a penetrating manner, the opening of the water outlet section is located in the annular groove, and the end of the casing body 11 is clamped in the annular groove. The clamping between the first shell 10 and the second shell 20 is realized by the arrangement of the annular groove, and the structure is simple.

The metal rod 31 comprises a metal rod main body 311, and a first assembling end 312 and a second assembling end 313 which are fixed at two ends of the metal rod main body 311; further preferably, the metal rod main body 311, the first assembling end 312 and the second assembling end 313 are all cylindrical structures, and the outer diameters of the first assembling end 312 and the second assembling end 313 are smaller than the outer diameter of the metal rod main body 311; the cylindrical structure of the metal rod main body 311, the first assembling end 312 and the second assembling end 313 facilitates the processing and forming, the assembling and assembling operation, and in addition, the uniformity of heating the liquid flowing in the heating channel can be effectively improved.

Specifically, the metal bar 31 is specifically a steel member, which is preferably a stainless steel member having a high iron content whose surface is subjected to an anti-rust treatment such as a chromium plating, a nickel plating, or a teflon treatment, and specifically, stainless steel of the grades SUS420, SUS430, SUS431, and the like can be selected. The inductance coil 33 is electrically connected with a high-frequency high-voltage alternating-frequency power supply, alternating-frequency current exists on a lead of the inductance coil 33, and an alternating electromagnetic field which changes at a high speed is generated near the inductance coil 33 due to the magnetic effect of the current; the metal bar 31 is positioned in the alternating electromagnetic field, the stainless steel part with high iron content has good magnetic permeability, in the alternating electromagnetic field with high-speed change, the outer circle surface of the metal bar 31 cuts alternating magnetic lines, and induced alternating current, namely alternating eddy current, is generated inside the metal bar. The eddy current makes the current carrier inside the metal rod 31 generate random motion, the current carrier collides with each other and generates heat through friction, so that the metal rod 31 generates heat, the liquid in the heating channel 40 flows through the surface of the metal rod 31, and the purpose of heating the liquid is realized after heat exchange, and because the alternating electromagnetic field generated by the inductance coil 33 is changed at a high speed, the metal rod 31 generates heat quickly, the heating efficiency is high, and the demand of instant heating can be met.

The water inlet section 41 is an L-shaped structure and comprises a first water inlet section 411 and a second water inlet section 412 along the liquid flowing direction, the inner diameter of the second water inlet section 412 is matched with the outer diameter of the second assembling end 313, and the first assembling end 312 is arranged in the second water inlet section 412 in a penetrating manner and is abutted against the side wall of the first water inlet section 411; the fuse-link and the plastic part of first casing 10 formula as an organic whole, the fuse-link is the area of the lateral wall of first section 411 of intaking and the contact of first assembly end 312, and this setting is convenient for processing production, helps reduce cost.

Further, the electromagnetic heating assembly further includes an elastic member 32; the inner diameter of the end of the water outlet section 43 gradually decreases from the end connected with the heating section 42 to the other end, the second assembling end 313 penetrates through the water outlet section 43, the elastic member 32 is sleeved on the second assembling end 313, and is in a compressed state, and the two ends of the elastic member are respectively abutted against the side wall of the water outlet section 43 and the metal rod 31 body.

As an optional implementation manner, in this embodiment, the liquid electromagnetic heating apparatus further includes an insulating heat-conducting protection tube 50 and a temperature control element 60.

Referring to fig. 9, fig. 9 is a schematic structural view of the insulating heat conducting protection tube and the temperature control element according to embodiment 1 of the present invention, wherein the insulating heat conducting protection tube 50 is sleeved between the heating channel 40 and the inductance coil 33. Insulating heat conduction protection tube 50 is used for protecting inductance coils 33, produces too much heat and then leads to the unexpected fusing of casing body 11 when metal rod 31 is unusual dry combustion method, and insulating heat conduction protection tube 50 can avoid heating channel 40 to heat the hot water in the section 42 and cause the electric shock incident with inductance coils 33 direct contact, further improves the security performance of device. Further preferably, the insulating and heat-conducting protection tube 50 is made of quartz glass, which is an excellent electrical insulating material, has good insulating property even at high temperature, and has high mechanical property; a buffer glue 52 is disposed between the insulating and heat-conducting protection tube 50 and the second housing 20, and is a soft glue, which has a buffer effect and can prevent the insulating and heat-conducting protection tube 50 made of quartz glass from being broken due to impact.

The temperature control element 60 is arranged on the outer side surface of the insulated heat-conducting protection tube 50; the temperature control element 60 detects the temperature of the insulating heat-conducting protection tube 50 and controls the on/off of the circuit between the inductance coil 33 and the alternating-frequency power supply; the temperature control element 60 is preset with a temperature threshold and compares the measured temperature with the temperature threshold, when the measured temperature is greater than the temperature threshold, the circuit between the inductor 33 and the ac power supply is opened, and when the measured temperature is not greater than the temperature threshold, the circuit between the inductor 33 and the ac power supply is closed. The temperature control element 60 can detect the temperature of the insulating heat-conducting protection tube 50, automatically recognize temperature abnormality, cut off a circuit between the inductance coil 33 and the alternating-current power supply, stop heating the metal rod 31, avoid the situation that the first shell 10 is burnt through due to the overhigh temperature of the metal rod 31, and further improve the safety performance of the device.

As an alternative embodiment, in the present embodiment, the sealing connector 80 is a potting adhesive shell, and the cavity is filled with a potting adhesive 82; the liquid electromagnetic heating device further comprises a waterproof ring 90. Specifically, the fixing portion 12 of the first housing 10 and the potting compound shell 80 are detachably fixed by the fixing screws 13, so that the fixing stability is good and the mounting and dismounting are convenient. The potting adhesive 82 can play a role in enhancing insulation, effectively prevents the battery coil from being in direct contact with liquid in the heating channel or outside the device, further improves safety performance, and in addition, the potting adhesive 82 can also absorb heat generated by the inductance coil 33, so that a certain heat dissipation effect is achieved. The potting rubber shell 80 is a hollow cylindrical structure, the second shell 20 is clamped in a penetrating manner in the potting rubber shell 80, and the waterproof ring 90 is arranged between the second shell 20 and the potting rubber shell 80 to play a role in sealing and waterproofing.

Further, please refer to fig. 10, fig. 10 is a schematic view illustrating pouring of the pouring sealant according to embodiment 1 of the present invention, a sealant pouring opening 83 is provided at a splicing position of the pouring sealant shell 80 and the first housing 10, the liquid electromagnetic heating device is integrally inverted during the pouring process, and the pouring sealant 82 is poured into the cavity from the sealant pouring opening 83, as shown by an arrow X in fig. 10, until the liquid level is higher than the electric interference position such as the inductance coil 33 by at least 2 mm.

Further, in the embodiment of the utility model provides an in the embodiment, inductance coils 33 is the enameled wire rod, and temperature control element 60 is through first wire 71 and control circuit electric connection, control circuit is used for control the opening or closing of alternating current power supply, inductance coils 33 through second wire 72 with alternating current power supply electric connection, first wire 71 and second wire 72 are double-insulated wire, have two sinle silks in the double-insulated wire, first wire 71 or second wire 72 respectively with temperature control element 60 or inductance coils 33's both ends welding back with insulating material parcel, welding position submergence in the casting glue, and with the distance of casting glue liquid level is 2mm at least to guarantee insulating effect.

The embodiment 1 of the present invention provides an electromagnetic liquid heating device, which adopts an electromagnetic heating technology, directly sets a metal rod in a heating channel, and is used for generating an alternating magnetic field through the setting of an inductance coil, so that the metal rod generates a vortex in the alternating magnetic field to generate heat, and directly heats the liquid flowing in the heating channel, and the electromagnetic liquid heating device has high heating efficiency, and can meet the demand of instant heating; in a preferred embodiment, the structures of the metal rod, the first shell and the second shell are preferably limited, and through the arrangement of the fuse element, the metal rod can be fused by high temperature generated during abnormal dry burning, and the heating channel is communicated with the outside, so that pressure difference for conveying liquid cannot be generated due to air leakage, the liquid cannot flow normally, and the accidental outflow of the liquid with too high temperature, further, the injury to a user and the like are effectively prevented; in addition, in preferred embodiment, through insulating heat conduction protection tube, effectively avoid liquid in the heating channel is in the unexpected damaged in-process of first casing with inductance coil direct contact and then cause the electric shock incident, and further combine the setting of embedment rubber shell, through pouring into the pouring sealant, further avoid liquid in the heating channel and the liquid outside the device get into and wade the electric region, effectively improve the security performance, and simple structure is favorable to reducing production and processing cost.

Example 2

The embodiment 2 of the utility model also provides a tooth flushing device, which comprises the liquid electromagnetic heating device of the embodiment 1.

The embodiment 2 of the utility model provides a tooth flushing device, it has the instant heating function, and heating response speed is fast, and heating efficiency is high, and it can produce warm pulse rivers fast and be used for carrying out the oral cavity cleanness, can reduce the stimulation to the oral cavity, improves and uses experience, just its insulating nature of liquid electromagnetic heating device is strong, and the security performance is high, accords with the requirement of domestic appliance II class utensil.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (10)

1. An electromagnetic liquid heating device, characterized in that: the electromagnetic heating device comprises a first shell, a second shell, an electromagnetic heating assembly and a sealing connecting piece; the first shell and the second shell are fixed and enclose to form a closed heating channel for transporting liquid by using pressure difference between two ends; the electromagnetic heating assembly comprises a metal rod and an induction coil, and the metal rod is arranged in the heating channel; the inductance coil is sleeved outside the heating channel; the induction coil is electrically connected with an alternating frequency power supply and can generate an alternating magnetic field, and the metal rod is positioned in the alternating magnetic field and generates eddy current to generate heat; the sealing connecting piece is respectively fixed with the first shell and the second shell and encloses to form a closed cavity, and the heating channel and the electromagnetic heating assembly are both positioned in the cavity.

2. Electromagnetic liquid heating device according to claim 1, characterized in that: the fuse also comprises a fuse element; the fuse piece is arranged on the first shell, and two sides of the fuse piece are respectively communicated with the heating channel and the outside; the metal rod is abutted against the inner side of the fuse-link, and when the metal rod is in a dry-burning state, the metal rod fuses through the fuse-link and enables the heating channel to be communicated with the outside.

3. Electromagnetic liquid heating device according to claim 2, characterized in that: the heating channel sequentially comprises a water inlet section, a heating section and a water outlet section along the flowing direction of the liquid; the first shell comprises a fixing part and a shell body, and the water inlet section penetrates through the fixing part; the shell body is of a hollow cylindrical structure, an inner hole of the shell body is the heating section, and the inductance coil is sleeved outside the shell body; one end of the shell body is fixedly connected with the fixing part, and the other end of the shell body is movably clamped on the second shell; the water outlet section is arranged in the second shell in a penetrating way.

4. An electromagnetic liquid heating apparatus according to claim 3, wherein: the metal rod comprises a metal rod main body, a first assembling end and a second assembling end, wherein the first assembling end and the second assembling end are fixed at two ends of the metal rod main body; the water inlet section is of an L-shaped structure and comprises a first water inlet section and a second water inlet section along the flowing direction of liquid, the inner diameter of the second water inlet section is matched with the outer diameter of the first assembling end, and the first assembling end penetrates through the second water inlet section and is abutted against the side wall of the first water inlet section; the second assembling end is movably clamped on the water outlet section; the fuse piece and the first shell are integrated into a whole, and the fuse piece is an area where the side wall of the first water inlet section is in contact with the first assembling end.

5. Electromagnetic liquid heating device according to claim 4, characterized in that: the electromagnetic heating assembly further comprises an elastic piece; the inner diameter of the end part of the water outlet section is gradually reduced from one end connected with the heating section to the other end, the second assembling end penetrates through the water outlet section, the elastic piece is sleeved at the second assembling end which is in a compression state, and the two ends of the elastic piece are respectively abutted against the side wall of the water outlet section and the metal rod main body.

6. Electromagnetic liquid heating device according to claim 1, characterized in that: the induction heating coil is characterized by further comprising an insulating heat conduction protection pipe, wherein the insulating heat conduction protection pipe is sleeved between the heating channel and the induction coil.

7. Electromagnetic liquid heating device according to claim 6, characterized in that: the temperature control element is arranged on the outer surface of the insulating heat conduction protection pipe; the temperature control element detects the temperature of the insulating heat conduction protection tube and controls the on/off of a circuit between the inductance coil and the alternating-frequency power supply; the temperature control element is preset with a temperature threshold value, the measured temperature is compared with the temperature threshold value, when the measured temperature is higher than the temperature threshold value, a circuit between the inductance coil and the alternating-frequency power supply is disconnected, and when the measured temperature is not higher than the temperature threshold value, a circuit between the inductance coil and the alternating-frequency power supply is closed.

8. Electromagnetic liquid heating device according to claim 1, characterized in that: the sealing connecting piece is a potting adhesive shell, and a potting adhesive is poured into the cavity.

9. Electromagnetic liquid heating device according to claim 8, characterized in that: the device also comprises a waterproof part; the shell is glued to the embedment is cavity tubular structure, second casing block wears to locate the shell is glued to the embedment, waterproof set up in the second casing with between the shell is glued to the embedment.

10. A tooth flusher is characterized in that: electromagnetic liquid heating apparatus comprising a device according to any one of claims 1 to 9.

Images