CN112493962A - Steam generating device and sterilizing equipment - Google Patents
Steam generating device and sterilizing equipment Download PDFInfo
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- CN112493962A CN112493962A CN202011378942.5A CN202011378942A CN112493962A CN 112493962 A CN112493962 A CN 112493962A CN 202011378942 A CN202011378942 A CN 202011378942A CN 112493962 A CN112493962 A CN 112493962A
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4234—Steam generating arrangements
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
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Abstract
The utility model relates to a steam generator and disinfecting equipment, the outer wall at airtight heating inner bag is around being provided with heating coil for under heating coil inserts the condition of high frequency alternating current power supply, heating coil produces the magnetic field of the alternation of high frequency, thereby according to Faraday's electromagnetic induction law, thereby will produce the water that the vortex heating held in the inside of airtight heating inner bag, the temperature of avoiding appearing the upper strata can be less than the condition of the temperature of lower floor, effectively improves heating efficiency. Meanwhile, the internal air pressure of the sealed heating liner is continuously increased in the heating process, so that the boiling point of water contained in the sealed heating liner is increased until the boiling point reaches more than 100 ℃, and then water vapor with the temperature higher than 70 ℃ can be obtained. Through the scheme, the disinfection operation of the disinfection equipment can be realized by efficiently obtaining the water vapor with the temperature higher than 70 ℃ in real time, and the disinfection reliability is high.
Description
Technical Field
The application relates to the technical field of disinfection, in particular to a steam generating device and a disinfection device.
Background
Along with the development of science and technology and the continuous improvement of the living standard of people, people pay more and more attention to the disinfection of daily necessities. Because the virus has the characteristics of protein, the protein can be inactivated under a certain temperature condition, so that the virus can be killed in a high-temperature environment, and the disinfection of living goods is realized. Meanwhile, because of the advantages of safety, no pollution, easy availability and the like, high-temperature steam is often used for sterilizing articles in equipment such as dishwashers and the like.
When the traditional dish-washing machine is used for disinfecting, the metal coil or the heating plate arranged at the bottom of the heating inner container is used for heating water in the heating inner container, high-temperature water vapor generated by heating is input into the disinfection bin, and tableware and the like in the disinfection bin are disinfected. However, the water temperature in the upper layer in the heating liner is lower than that in the lower layer in the heating manner, so that the heating time is long, and the heating efficiency is low; meanwhile, the temperature of the water vapor obtained by the method can only reach about 70 ℃ generally, and the aim of sterilizing some high-temperature resistant viruses cannot be achieved. Therefore, the conventional dish washer has a disadvantage of poor sterilization reliability.
Disclosure of Invention
In view of the above, it is necessary to provide a steam generating device and a sterilizing apparatus for solving the problem of poor reliability of sterilization of a conventional dishwasher.
A steam generating device comprising: the heating device comprises a closed heating inner container, a heating coil and an exhaust assembly, wherein the heating coil is arranged around the outer wall of the closed heating inner container, the closed heating inner container is provided with an exhaust hole, the exhaust assembly is arranged in the exhaust hole, and the closed heating inner container is used for containing water to be heated; the heating coil is used for connecting a high-frequency alternating current power supply to carry out eddy current heating on the water in the sealed heating inner container; the exhaust assembly is used for being opened when the water vapor pressure in the sealed heating inner container reaches a threshold value, and the water vapor is discharged from the exhaust hole.
In one embodiment, the steam generating device further comprises a heat insulation sealing layer arranged on the outer wall of the closed heating inner container and used for sealing the heating coil.
In one embodiment, the exhaust assembly is a spring exhaust valve.
In one embodiment, the exhaust assembly is an electromagnetic valve, the steam generating device further comprises a pressure collector and a controller, the pressure collector is arranged inside the closed heating inner container, and the pressure collector and the electromagnetic valve are respectively connected with the controller.
In one embodiment, the heating coil is spirally disposed on the outer wall of the sealed heating inner container.
In one embodiment, the heating coil is arranged on the outer wall of the sealed heating inner container in a net shape.
In one embodiment, the steam generating device further comprises a fusible piece, and the fusible piece is arranged on the exhaust hole of the closed heating inner container.
In one embodiment, the fusible piece is an aluminum alloy fusible piece.
A sterilizing device comprises the steam generating device.
In one embodiment, the disinfection device is a dishwasher.
Above-mentioned steam generating device and disinfecting equipment, the outer wall at airtight heating inner bag is around being provided with heating coil for under heating coil inserts high frequency alternating current power supply's the condition, heating coil produces the magnetic field of the alternating of high frequency, thereby according to Faraday's electromagnetic induction law, thereby will produce the water that the vortex heating held in the inside of airtight heating inner bag, the temperature of avoiding appearing the upper strata can be less than the condition of the temperature of lower floor, effectively improves heating efficiency. Meanwhile, the internal air pressure of the sealed heating liner is continuously increased in the heating process, so that the boiling point of water contained in the sealed heating liner is increased until the boiling point reaches more than 100 ℃, and then water vapor with the temperature higher than 70 ℃ can be obtained. Through the scheme, the disinfection operation of the disinfection equipment can be realized by efficiently obtaining the water vapor with the temperature higher than 70 ℃ in real time, and the disinfection reliability is high.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a steam generator according to an embodiment;
FIG. 2 is a schematic view of another embodiment of a steam generator;
FIG. 3 is a schematic diagram of a flow chart of the dishwasher sterilization in one embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1, a steam generating apparatus includes: the heating device comprises a closed heating inner container 10, a heating coil 20 and an exhaust assembly 30, wherein the heating coil 20 is arranged around the outer wall of the closed heating inner container 10, the closed heating inner container 10 is provided with an exhaust hole, the exhaust assembly 30 is arranged on the exhaust hole, and the closed heating inner container 10 is used for containing water to be heated; the heating coil 20 is used for connecting a high-frequency alternating current power supply to carry out eddy current heating on the water in the sealed heating inner container 10; the exhaust assembly 30 is used for opening when the water vapor pressure inside the sealed heating inner container 10 reaches a threshold value, and discharging the water vapor from the exhaust hole.
Specifically, the steam generating device is a device that generates water vapor at a relatively high temperature by heating, and is often used in a sterilization apparatus that needs to perform a sterilization system using high-temperature water vapor. If a coil is wound around the outside of a conductor and an alternating current is supplied to the coil, an alternating magnetic field is generated by the coil. Because the conductor in the middle of the coil is a closed circuit which can be equivalent to a circle in the circumferential direction, and the magnetic flux in the closed circuit is constantly changed, induced electromotive force and induced current can be generated in the circumferential direction of the conductor, the direction of the current is rotated along the circumferential direction of the conductor, like a circle of vortex, so that the phenomenon that the electromagnetic induction is generated in the whole conductor to generate the induced current is called as an eddy current phenomenon. The eddy current inside the conductor also generates heat, and if the electrical resistivity of the conductor is small, the generated eddy current is strong and the generated heat is large. The technical scheme of this embodiment just adopts this kind of phenomenon, realizes heating the inside standby hot water that holds of airtight heating inner bag 10. Through the vortex continuous heating, the standby hot water that holds inside airtight heating inner bag 10 is heated to the boiling fast, has higher heating efficiency.
Since the boiling point of water is affected by the gas pressure, the higher the boiling point. At pressures above 1 atm, the water will boil above 100 ℃. This embodiment adopts airtight heating inner bag 10 to heat, the steam that the evaporation of being heated to water produced can not diffuse to the outside, can only remain the inside of airtight heating inner bag 10, the atmospheric pressure that can make the inside of airtight heating inner bag 10 is higher than 1 standard atmospheric pressure, the inside of airtight heating inner bag 10 just forms the high-temperature high-pressure environment like this, the steam temperature that obtains this moment is up to 100 ℃ and above, be higher than 70 ℃ far away, thereby can effectively kill high temperature resistant virus, the disinfection is more complete, thoroughly.
It should be noted that in one embodiment, the steam generating device further comprises a high-frequency ac power generating circuit, which specifically includes several parts of a rectifying circuit, a filtering circuit and an inverting circuit, and the high-frequency ac power generating circuit can form a high-frequency ac power to be supplied to the heating coil 20 by rectifying, filtering and inverting the power supplied by the external power grid, so as to realize the heating operation by using the eddy current effect. It is understood that the heating coil 20 is a metal coil in this embodiment for converting electrical energy into thermal energy.
In one embodiment, the side wall and the bottom of the closed heating liner 10 are made of metal material, and the top thereof is sealed by other materials with heat insulation function, and at the same time, an exhaust hole is opened on the top, and an exhaust assembly 30 is arranged at the exhaust hole. The exhaust assembly 30 is used for controlling whether the water vapor generated in the sealed heating inner container 10 is discharged to an external disinfection cabin or the like, the exhaust assembly 30 is in a closed state under a normal condition, and when a user utilizes the requirement of the water vapor, the exhaust assembly 30 is opened to enable the water vapor to flow out to the corresponding part.
Further, in an embodiment, referring to fig. 2, in order to facilitate a user to add water to the sealed heating inner container 10, a water inlet 11 is further formed on a side wall of the sealed heating inner container 10 near the bottom, the water inlet 11 is used for being connected with an external water source, and when the user needs to add water, the water adding operation can be realized through the water inlet 11.
Referring to fig. 2, in one embodiment, the steam generator further includes a heat insulation sealing layer 40, and the heat insulation sealing layer 40 is disposed on an outer wall of the sealed heating inner container 10 for sealing the heating coil 20.
Specifically, the present embodiment seals the heating coil 20 with a heat insulating material, so that heat generated from the heating coil 20 is hardly dissipated to the outside, and has high power density, energy saving, and higher heating efficiency. Simultaneously, through the scheme of this embodiment, can also avoid heating coil 20 when outwards giving off heat for the ageing of external device temperature rising and accelerating external device, for traditional bottom heating mode, can also effectively promote the life of steam generating device place equipment. It should be noted that the type of the heat-insulating seal layer 40 is not exclusive, and any material having a heat-insulating effect may be used for the heat-insulating seal layer 40.
It will be appreciated that the particular form of the insulating seal layer 40 is not exclusive as long as the heating coil 20 can be isolated from the external environment. For example, referring to fig. 2 in combination, the closed heating inner container 10 adopted in the present embodiment is the closed heating inner container 10 with a wider top, and at this time, a cylindrical heat insulation sealing layer 40 with an open top and a closed bottom is adopted to seal the heating coil 20. Through the scheme of this embodiment, not only seal heating coil 20, can also keep apart whole airtight heating inner bag 10 and external environment simultaneously, effectively avoid the temperature loss of airtight heating inner bag 10 among the heating process, further guarantee heating coil 20's heating efficiency.
It is understood that, in another embodiment, the heat-insulating sealing layer 40 may be a cylindrical structure with an open bottom and an open top, and the heat-insulating sealing layer 40 may also be a cylindrical structure with an open top and a bottom, so that the sealing operation of the heating coil 20 can be performed without considering the isolation of the bottom of the hermetic heating inner container 10 from the external environment.
In one embodiment, the exhaust assembly 30 is a spring exhaust valve.
Specifically, when the heating coil 20 is used to perform eddy current heating on water inside the sealed heating liner 10, the air pressure inside the sealed heating liner 10 cannot be increased infinitely, otherwise a safety accident may be caused. Therefore, an exhaust assembly 30 is provided at the exhaust hole to perform high-temperature (100 ℃ and above) water vapor discharge. In this embodiment, a spring exhaust valve is specifically used for controlling the discharge of high-temperature water vapor, a threshold value used for comparing the pressure of the water vapor in the sealed heating liner 10 in this embodiment is a spring pre-tightening force, the opening and closing actions of the spring exhaust valve are realized by automatically opening and closing a valve core through air pressure change and the spring pre-tightening force, and when the medium pressure (the pressure in the sealed heating liner 10) is increased to a lifting force which is larger than the spring pre-tightening force, the valve core is automatically opened by overcoming the spring pre-tightening force, and excess water vapor is discharged to reduce the internal pressure; and due to the action of the spring force, when the internal pressure is reduced to a safe value, the valve core is automatically closed, and the release of the water vapor is stopped. At this time, the spring exhaust valve is closed to seal the closed heating inner container 10, heating is continued, the temperature of the water vapor in the closed heating inner container 10 is continuously increased, so that the temperature of the gas molecules in the closed heating inner container 10 is increased, namely the movement of the gas molecules is intensified, the average speed of the molecules is increased, the acting force of the molecules impacting the wall of the container is increased, the pressure is increased, and when the pressure is increased to a certain value (namely the spring pretightening force), the spring exhaust valve is opened again. This embodiment adopts spring discharge valve to carry out the release of high temperature steam, has with low costs and the simple advantage of control.
It is understood that the type of the exhaust assembly 30 is not exclusive, and in another embodiment, the exhaust assembly 30 is a solenoid valve, and the steam generating device further includes a pressure collector and a controller, wherein the pressure collector is disposed inside the sealed heating inner container 10, and the pressure collector and the solenoid valve are respectively connected to the controller.
Specifically, in this embodiment, the electromagnetic valve is used as a control device for releasing the high-temperature water vapor, and at this time, the control is realized by combining the air pressure inside the sealed heating inner container 10, so the steam generating device in this embodiment further includes two parts, namely a pressure collector and a controller. The controller is pre-stored with a threshold, the pressure collector collects pressure data in the sealed heating inner container 10 in real time and sends the pressure data to the controller for comparison and analysis with the threshold, and when the pressure data reaches the threshold, the controller controls the electromagnetic valve to be opened, so that the discharge control of water vapor is realized. When the pressure drops below the threshold value, the controller controls the electromagnetic valve to be closed, so that the water vapor flowing out of the air inlet and outlet holes is high-temperature water vapor, and the water vapor can be thoroughly disinfected when being disinfected.
It should be noted that the manner in which the heating coil 20 is disposed around the outer wall of the sealed heating inner container 10 is not exclusive, as long as it can ensure that when the heating coil 20 is connected with high-frequency alternating current, eddy current can be generated to heat the water in the sealed heating inner container 10. For example, in one embodiment, referring to fig. 2, the heating coil 20 is spirally disposed on the outer wall of the sealed heating inner container 10. In this embodiment, a metal wire is wound around the outer wall of the heating liner 10 in a clockwise or counterclockwise direction, so that the heating coil 20 is spirally wound around the outer wall of the heating liner 10.
In another embodiment, the heating coil 20 may be disposed in a net shape on the outer wall of the sealed heating inner container 10. The heating coil 20 may be a net shape, and is specifically realized by winding two or more heating coils around the outer wall of the sealed heating inner container 10 in different directions. The heating coil 20 provided in a spiral or net shape in the above embodiment can increase the contact area between the heating coil 20 and the air, and the heat generated by the heating coil 20 is more easily transferred to the sealed heating inner container 10 by heat transfer, thereby completing the heating operation.
In one embodiment, the steam generating apparatus further includes a fusible sheet disposed to close an exhaust hole (not shown) of the heating inner container 10.
Specifically, the fusible pieces are devices which are easily fused when the temperature reaches a certain level. In this embodiment, in order to ensure safety, a fusible link is installed at the exhaust assembly 30, and the fusible link plays a role of backup safety when the exhaust assembly 30 fails, and is made of a material with a low melting point. Once the exhaust component 30 fails, the pressure inside the sealed heating liner 10 is too high, the temperature rises along with the pressure, when the temperature reaches the melting point of the fusible pieces, the fusible pieces are continuously heated to start melting, so that the gas inside the sealed heating liner 10 is sprayed out from the positions of the fusible pieces, the pressure inside the sealed heating liner 10 is reduced, and explosion accidents are prevented.
It is understood that the mounting position of the fusible pieces is not exclusive, and the fusible pieces may be directly contacted with the high-temperature steam in the sealed heating inner container 10. For example, in another embodiment, a small hole may be formed at a position different from the vent hole on the top of the sealed heating inner container 10, and then the fusible piece may be disposed in the small hole, so as to prevent the explosion accident.
It should be noted that the type of fusible pieces is not exclusive, and different choices can be made according to the sealed heating liner 10 and the actual user requirements, as long as the safety event caused by the over-high internal pressure of the sealed, i.e. heating liner can be effectively avoided. For example, in one embodiment, the fusible piece is an aluminum alloy fusible piece.
Above-mentioned steam generating device, the outer wall at airtight heating inner bag 10 is around being provided with heating coil 20 for under heating coil 20 inserts the condition of high frequency alternating current power supply, heating coil 20 produces the alternating magnetic field of high frequency, thereby according to Faraday's electromagnetic induction law, will produce the water that the vortex heating held in the inside of airtight heating inner bag 10, avoid appearing the condition that the temperature on upper strata can be less than the temperature of lower floor, effectively improve heating efficiency. Meanwhile, in the heating process of the sealed heating liner 10, the internal air pressure of the sealed heating liner 10 is continuously increased, so that the boiling point of water contained in the sealed heating liner 10 is increased until the boiling point reaches more than 100 ℃, and then water vapor with the temperature higher than 70 ℃ can be obtained. Through the scheme, the disinfection operation of the disinfection equipment can be realized by efficiently obtaining the water vapor with the temperature higher than 70 ℃ in real time, and the disinfection reliability is high.
A sterilizing device comprises the steam generating device.
Specifically, the steam generating device comprises a closed heating inner container 10, a heating coil 20 and an exhaust assembly 30, wherein the heating coil 20 is arranged around the outer wall of the closed heating inner container 10, the closed heating inner container 10 is provided with an exhaust hole, the exhaust assembly 30 is arranged in the exhaust hole, and the closed heating inner container 10 is used for containing water to be heated; the heating coil 20 is used for connecting a high-frequency alternating current power supply to carry out eddy current heating on the water in the sealed heating inner container 10; the exhaust assembly 30 is used for opening to discharge the water vapor when the water vapor pressure inside the sealed heating inner container 10 reaches a threshold value.
The steam generating device is a device for generating high-temperature water vapor by heating, and is often applied to a sterilizing device requiring a sterilization system using high-temperature water vapor. If a coil is wound around the outside of a conductor and an alternating current is supplied to the coil, an alternating magnetic field is generated by the coil. Because the conductor in the middle of the coil is a closed circuit which can be equivalent to a circle in the circumferential direction, and the magnetic flux in the closed circuit is constantly changed, induced electromotive force and induced current can be generated in the circumferential direction of the conductor, the direction of the current is rotated along the circumferential direction of the conductor, like a circle of vortex, so that the phenomenon that the electromagnetic induction is generated in the whole conductor to generate the induced current is called as an eddy current phenomenon. The eddy current inside the conductor also generates heat, and if the electrical resistivity of the conductor is small, the generated eddy current is strong and the generated heat is large. The technical scheme of this embodiment just adopts this kind of phenomenon, realizes heating the inside standby hot water that holds of airtight heating inner bag 10. Through the vortex continuous heating, the standby hot water that holds inside airtight heating inner bag 10 is heated to the boiling fast, has higher heating efficiency.
Since the boiling point of water is affected by the gas pressure, the higher the boiling point. At pressures above 1 atm, the water will boil above 100 ℃. This embodiment adopts airtight heating inner bag 10 to heat, the steam that the evaporation of being heated to water produced can not diffuse to the outside, can only remain the inside of airtight heating inner bag 10, the atmospheric pressure that can make the inside of airtight heating inner bag 10 is higher than 1 standard atmospheric pressure, the inside of airtight heating inner bag 10 just forms the high-temperature high-pressure environment like this, the steam temperature that obtains this moment is up to 100 ℃ and above, be higher than 70 ℃ far away, thereby can effectively kill high temperature resistant virus, the disinfection is more complete, thoroughly.
It should be noted that in one embodiment, the steam generating device further comprises a high-frequency ac power generating circuit, which specifically includes several parts of a rectifying circuit, a filtering circuit and an inverting circuit, and the high-frequency ac power generating circuit can form a high-frequency ac power to be supplied to the heating coil 20 by rectifying, filtering and inverting the power supplied by the external power grid, so as to realize the heating operation by using the eddy current effect. It is understood that the heating coil 20 is a metal coil in this embodiment for converting electrical energy into thermal energy.
In one embodiment, the side wall and the bottom of the closed heating liner 10 are made of metal material, and the top thereof is sealed by other materials with heat insulation function, and at the same time, an exhaust hole is opened on the top, and an exhaust assembly 30 is arranged at the exhaust hole. The exhaust assembly 30 is used for controlling whether the water vapor generated in the sealed heating inner container 10 is discharged to an external disinfection cabin or the like, the exhaust assembly 30 is in a closed state under a normal condition, and when a user utilizes the requirement of the water vapor, the exhaust assembly 30 is opened to enable the water vapor to flow out to the corresponding part.
Further, in an embodiment, in order to facilitate the user to add water to the sealed heating inner container 10, a water inlet 11 is further formed in a side wall of the sealed heating inner container 10 close to the bottom, the water inlet 11 is used for being connected with an external water source, and when the user needs to add water, the water adding operation can be achieved through the water inlet 11.
Referring to fig. 2, in one embodiment, the steam generator further includes a heat insulation sealing layer 40, and the heat insulation sealing layer 40 is disposed on an outer wall of the sealed heating inner container 10 for sealing the heating coil 20.
Specifically, the present embodiment seals the heating coil 20 with a heat insulating material, so that heat generated from the heating coil 20 is hardly dissipated to the outside, and has high power density, energy saving, and higher heating efficiency. Simultaneously, through the scheme of this embodiment, can also avoid heating coil 20 when outwards giving off heat for the ageing of external device temperature rising and accelerating external device, for traditional bottom heating mode, can also effectively promote the life of steam generating device place equipment. It should be noted that the type of the heat-insulating seal layer 40 is not exclusive, and any material having a heat-insulating effect may be used for the heat-insulating seal layer 40.
It will be appreciated that the particular form of the insulating seal layer 40 is not exclusive as long as the heating coil 20 can be isolated from the external environment. For example, referring to fig. 2 in combination, the closed heating inner container 10 adopted in the present embodiment is the closed heating inner container 10 with a wider top, and at this time, a cylindrical heat insulation sealing layer 40 with an open top and a closed bottom is adopted to seal the heating coil 20.
In one embodiment, the exhaust assembly 30 is a spring exhaust valve.
Specifically, when the heating coil 20 is used to perform eddy current heating on water inside the sealed heating liner 10, the air pressure inside the sealed heating liner 10 cannot be increased infinitely, otherwise a safety accident may be caused. Therefore, an exhaust assembly 30 is provided at the exhaust hole to perform high-temperature (100 ℃ and above) water vapor discharge. In this embodiment, a spring exhaust valve is specifically used for controlling the discharge of high-temperature steam, the opening and closing of the spring exhaust valve is realized by automatically opening and closing a valve core through air pressure change and spring pre-tightening force, and when the medium pressure (the pressure inside the sealed heating liner 10) is increased to a level higher than the spring pre-tightening force, the valve core overcomes the spring pre-tightening force to automatically open, and excess steam is discharged to reduce the internal pressure; and due to the action of the spring force, when the internal pressure is reduced to a safe value, the valve core is automatically closed, and the release of the water vapor is stopped. At this time, the spring exhaust valve is closed to seal the closed heating inner container 10, heating is continued, the temperature of the water vapor in the closed heating inner container 10 is continuously increased, so that the temperature of the gas molecules in the closed heating inner container 10 is increased, namely the movement of the gas molecules is intensified, the average speed of the molecules is increased, the acting force of the molecules impacting the wall of the container is increased, the pressure is increased, and when the pressure is increased to a certain value (namely the spring pretightening force), the spring exhaust valve is opened again. This embodiment adopts spring discharge valve to carry out the release of high temperature steam, has with low costs and the simple advantage of control.
Further, in one embodiment, the steam generating device further includes a fusible sheet disposed at the exhaust hole of the hermetically heated inner container 10.
Specifically, the fusible pieces are devices which are easily fused when the temperature reaches a certain level. In this embodiment, in order to ensure safety, a fusible link is installed at the exhaust assembly 30, and the fusible link plays a role of backup safety when the exhaust assembly 30 fails, and is made of a material with a low melting point. Once the exhaust component 30 fails, the pressure inside the sealed heating liner 10 is too high, the temperature rises along with the pressure, when the temperature reaches the melting point of the fusible pieces, the fusible pieces are continuously heated to start melting, so that the gas inside the sealed heating liner 10 is sprayed out from the positions of the fusible pieces, the pressure inside the sealed heating liner 10 is reduced, and explosion accidents are prevented.
In one embodiment, the disinfection device is a dishwasher.
Specifically, referring to fig. 3, in the present embodiment, the steam generating device is disposed at the bottom of the inner container of the dishwasher, and the exhaust hole formed on the sealed heating inner container 10 of the steam generating device is connected to the steam jet of the dishwasher. When the dishwasher is in operation, a controller main board of the dishwasher forms a high-frequency alternating current power supply to the heating coil 20 by rectifying, filtering and inverting the power supplied by a power supply grid, the heating coil 20 can be in a net shape or a spiral shape, and the contact area with air can be increased, so that heat generated by metal can be transferred to the sealed heating inner container 10 more easily through heat transfer. The heating coil 20 generates a high-frequency alternating magnetic field, and generates eddy current in the sealed heating inner container 10 according to the faraday's law of electromagnetic induction to heat water therein. Since the boiling point of water is affected by atmospheric pressure, the higher the boiling point, and at atmospheric pressures greater than 1 standard atmosphere, the water will boil at temperatures above 100 ℃.
Because the sealed heating inner container 10 is tightly sealed by using the heat-insulating and heat-preserving sealing material, water vapor generated by water evaporation under heating cannot be diffused to the outside and only can be remained in the sealed heating inner container 10, so that the air pressure in the sealed heating inner container 10 is higher than 1 standard atmospheric pressure, and a high-temperature and high-pressure environment is formed in the sealed heating inner container 10. The pressure in the heating inner container can not rise infinitely, the spring exhaust valve can be opened when the air pressure reaches a certain degree, and the steam is discharged to the inner container of the dish washing machine, so that the disinfection operation is realized. The opening and closing actions of the spring exhaust valve are realized by the automatic opening and closing of the valve core through the air pressure change and the spring pretightening force. When the medium pressure (internal pressure) rises to a lifting force larger than the pre-tightening force of the spring, the valve core overcomes the pre-tightening force of the spring to automatically open, redundant water vapor is discharged, the internal pressure is reduced, and due to the action of the spring force, when the internal pressure is reduced to a safety value, the valve core automatically closes, and the discharge stops. At the moment, the heating inner container is sealed and continuously heated, the temperature in the heating inner container is continuously raised, so that the temperature of gas molecules in the heating inner container is raised, namely the movement of the gas molecules is intensified, the average speed of the molecules is increased, the acting force of the molecules impacting the wall of the container is increased, the pressure is increased, when the pressure is increased to a certain value, the gas can flush the spring exhaust valve again, and the generated high-temperature water vapor is continuously sprayed into the inner container of the dish washer from the top of the steam generating device, so that the effect of disinfecting dishes and chopsticks is achieved.
In order to ensure safety, an fusible piece is arranged at the position of the spring exhaust valve and is made of aluminum alloy materials with lower melting points. Once the spring exhaust valve fails, the pressure in the sealed heating inner container 10 is too high, the temperature rises along with the pressure, when the temperature reaches the melting point of the fusible pieces, the fusible pieces are continuously heated to start melting, and the gas in the sealed heating inner container 10 is sprayed out from the fusible pieces, so that the internal pressure of the sealed heating inner container 10 is reduced, and explosion accidents are prevented.
Above-mentioned disinfecting equipment, the outer wall at airtight heating inner bag 10 is around being provided with heating coil 20 for under heating coil 20 inserts the condition of high frequency alternating current power supply, heating coil 20 produces the alternating magnetic field of high frequency, thereby according to Faraday's electromagnetic induction law, will produce the water that the vortex heating held in the inside of airtight heating inner bag 10, avoid appearing the condition that the temperature on upper strata can be less than the temperature of lower floor, effectively improve heating efficiency. Meanwhile, in the heating process of the sealed heating liner 10, the internal air pressure of the sealed heating liner 10 is continuously increased, so that the boiling point of water contained in the sealed heating liner 10 is increased until the boiling point reaches more than 100 ℃, and then water vapor with the temperature higher than 70 ℃ can be obtained. Through the scheme, the disinfection operation of the disinfection equipment can be realized by efficiently obtaining the water vapor with the temperature higher than 70 ℃ in real time, and the disinfection reliability is high.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A steam generating apparatus, comprising: the heating coil is arranged around the outer wall of the closed heating liner, the closed heating liner is provided with an exhaust hole, and the exhaust assembly is arranged in the exhaust hole;
the closed heating inner container is used for containing water to be heated; the heating coil is used for connecting a high-frequency alternating current power supply to carry out eddy current heating on the water in the sealed heating inner container; the exhaust assembly is used for being opened when the water vapor pressure in the sealed heating inner container reaches a threshold value, and the water vapor is discharged from the exhaust hole.
2. The steam generator of claim 1, further comprising a heat insulating and sealing layer provided on an outer wall of the hermetic heating inner container for sealing the heating coil.
3. The steam generating device of claim 1, wherein the exhaust assembly is a spring exhaust valve.
4. The steam generating device of claim 1, wherein the exhaust assembly is a solenoid valve, the steam generating device further comprises a pressure collector and a controller, the pressure collector is arranged inside the sealed heating liner, and the pressure collector and the solenoid valve are respectively connected with the controller.
5. The steam generator according to claim 1, wherein the heating coil is provided spirally on an outer wall of the sealed heating inner container.
6. The steam generator as claimed in claim 1, wherein the heating coil is disposed in a mesh shape on an outer wall of the hermetic heating inner container.
7. The steam generating device of claim 1, further comprising a fusible sheet disposed at the vent of the hermetic heating liner.
8. The steam generator of claim 7, wherein the fusible sheet is an aluminum alloy fusible sheet.
9. A disinfection apparatus, comprising a steam generating device according to any one of claims 1-8.
10. A disinfection apparatus as claimed in claim 9, characterized in that said disinfection apparatus is a dishwasher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378942.5A CN112493962A (en) | 2020-11-30 | 2020-11-30 | Steam generating device and sterilizing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378942.5A CN112493962A (en) | 2020-11-30 | 2020-11-30 | Steam generating device and sterilizing equipment |
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| Publication Number | Publication Date |
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| CN112493962A true CN112493962A (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011378942.5A Pending CN112493962A (en) | 2020-11-30 | 2020-11-30 | Steam generating device and sterilizing equipment |
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Application publication date: 20210316 |