CN106679186B - Control method of intelligent electromagnetic air heater - Google Patents
Control method of intelligent electromagnetic air heater Download PDFInfo
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- CN106679186B CN106679186B CN201611254445.8A CN201611254445A CN106679186B CN 106679186 B CN106679186 B CN 106679186B CN 201611254445 A CN201611254445 A CN 201611254445A CN 106679186 B CN106679186 B CN 106679186B
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
- F24H9/2071—Arrangement or mounting of control or safety devices for air heaters using electrical energy supply
- F24H9/2078—Storage heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H2250/00—Electrical heat generating means
- F24H2250/08—Induction
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Central Heating Systems (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The invention discloses a control method of an intelligent electromagnetic air heater, and belongs to the technical field of hot air equipment. The method comprises the steps of setting time required by heating, outlet temperature, outlet air speed and temperature required by room temperature, selecting a preheating heating mode, carrying out indoor heating according to the heating mode corresponding to the selected heating mode after preheating is finished, monitoring the outlet temperature and the outlet air speed, carrying out adaptive adjustment, and using heat storage and heat release of a heat accumulator. The invention has the advantages of high intelligent degree, effective realization of heat energy storage and high heat utilization rate.
Description
Technical Field
The invention relates to a control method of an intelligent electromagnetic air heater, and belongs to the technical field of hot air equipment.
Background
Electromagnetic induction heating equipment comprises solenoid and electromagnetic heating controller, electromagnetic induction heating is one kind and utilizes the electromagnetic induction principle to convert the electric energy into the device of heat energy, electromagnetic controller becomes the direct current with 220V, 50/60Hz alternating current rectification, convert the direct current to the high-frequency high-voltage electricity that the frequency is 20 ~ 40KHz again, the high-frequency high-voltage electricity of high-speed change can produce the alternating magnetic field of high-speed change through the coil, can produce countless little vortex in the metal body when the magnetic line of force in the magnetic field passes through magnetic conduction metal material, make metal material self generate heat at a high speed, thereby reach the purpose of the material in the heating metal material feed cylinder.
The existing air heating equipment has high power consumption, low heat conversion efficiency and short service life, and can not meet the market demand more and more. The control method has low intelligent degree, cannot realize the storage of heat energy and has low heat utilization rate.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the control method of the intelligent electromagnetic air heater, which has the advantages of high intelligent degree, effective realization of heat energy storage and high heat utilization rate.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a control method of an intelligent electromagnetic air heater comprises the following steps:
step A, setting time required by heating of an intelligent electromagnetic air heater, outlet temperature, outlet air speed and temperature required by room temperature, selecting a corresponding temperature rise interval of a heat storage phase change material, and setting and controlling circulation time of heat transfer media with different temperatures;
b, selecting a preheating and temperature rising mode, setting and controlling the circulation time of heat transfer media with different temperatures, and carrying out preheating treatment;
c, after preheating is finished, indoor heating is carried out according to the heating mode corresponding to the selected heating mode;
d, monitoring the outlet temperature and the outlet wind speed of the intelligent electromagnetic air heater, and adaptively adjusting the generated deviation value until the set value is recovered;
and E, when the room temperature reaches the set temperature, storing the redundant heat into the heat accumulator until the heat accumulation volume of the heat accumulator is reached, stopping the heat accumulator, when the room temperature is reduced, firstly extracting the heat from the heat accumulator until the heat accumulation volume of the heat accumulator is reached, then automatically starting the heat accumulator, and returning to the step A.
The technical scheme of the invention is further improved as follows: the preheating and temperature rising mode comprises non-preheating.
The technical scheme of the invention is further improved as follows: the temperature in step C is raised from the normal temperature heat transfer medium, from the high temperature heat transfer medium, or from the steam.
The technical scheme of the invention is further improved as follows: the heat accumulator comprises a shell and a heat accumulation phase change material with the phase change temperature of 10-800 ℃ arranged in the shell.
The technical scheme of the invention is further improved as follows: the shell is made of heat-resistant steel, and the surface of the shell is provided with a heat-insulating material; the heat storage phase change material is one or more of wax, crystalline hydrated salt, fatty acid, stone brick or ceramic; the medium conveyed by the medium conveying pipeline is water or oil.
Due to the adoption of the technical scheme, the invention has the technical progress that: the heating device has the characteristics of direct air heating, high heating speed, high thermal efficiency, wide heating range, intelligent temperature control, random power regulation, attractive style, space saving and the like, can be widely applied to industries such as electronics, food, pharmacy, printing, packaging, cleaning, heat treatment and the like, is the optimal hot air source configuration of automation machinery in the hot air drying industry, and is particularly suitable for central air conditioning heating, factory workshop heating, overwintering of greenhouses, nursery stocks and farms, special heating in the power generation industry, heat preservation of various machines and equipment, freezing-preventing cement health preserving hot air, outdoor field heating hot air, and drying of foundation and interior decoration.
The heat conversion efficiency is high: the electromagnetic induction heating is adopted, the energy is saved, the heating speed is high, the thermal efficiency is high, a heat dissipation pipeline or a fan coil can be installed according to the heating area, and the energy is saved by more than 35 percent compared with other fuel oil, gas and electric heating equipment.
Energy conservation and environmental protection: electromagnetic heating system adopts frequency conversion technique, converts the low frequency power supply of 50Hz into 25000Hz high frequency power supply, and the noiselessness after the equipment starts, does not release any harmful gas during the use, and fireless, smokeless, tasteless does not have traditional heating equipment a great deal of pollution problem, can not produce naked light at the heating in-process, really accomplishes environmental protection and energy-conserving effect.
The internal part of the heating core part dissipates heat, the external part is electrified, the product has constant power, strong current is controlled by weak current, a soft start soft switch and a non-contact switch are controlled by weak current, starting impact current is avoided, and the use is safe and reliable. The time, the outlet temperature, the outlet air speed and the temperature required by the room temperature required by heating are automatically regulated and controlled, intelligent operation is realized, heat storage is carried out by utilizing the heat accumulator, the storage of heat energy is effectively realized, and the heat energy conversion rate and the utilization rate are improved.
The heating core part adopts electromagnetic induction heating and constant power, and the current can be automatically adjusted downwards when the voltage is high and can be automatically adjusted upwards when the voltage is low through frequency conversion pulse width adjustment, so that the constant electric power is ensured, the service life of the heater is prolonged, and the heating effect of a user is ensured.
The product has small volume, beautiful appearance and simple installation. The intelligent control is realized, the control cabinet is controlled by a microcomputer and is provided with an electronic digital signal power sensor, the temperature control is accurate and sensitive, the indoor temperature is balanced, the constant temperature setting and various alarm functions are realized, and the intelligent control system is simple to operate and easy to learn and use.
The installation and operation cost is low, the device is healthy and comfortable, and the device is very suitable for modern families and small and medium-sized enterprises and public institutions. Compared with similar heating equipment, the overwintering of hotel villas, greenhouse greenhouses, forest nursery gardens and farms has more obvious advantages.
Drawings
FIG. 1 is a schematic structural view of an intelligent electromagnetic air heater of the present invention;
the system comprises a control cabinet 1, a control cabinet 2, an electromagnetic heating system 3, a machine body 4, a medium conveying pipeline 6, a heat dissipation device 61, a branch pipeline 62, heat dissipation fins 7, a blower 8, a drainage device 9, a heat accumulator 91, a high-temperature steam inlet pipeline 92, a condensation medium recovery pipeline 93, a low-temperature medium liquid supplementing pipeline 94 and a high-temperature medium return pipeline.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
as shown in fig. 1, an intelligent electromagnetic air heater, including a control cabinet 1, an electromagnetic heating system 2 disposed in the control cabinet 1, a machine body 3 disposed on one side of the control cabinet, a heat dissipation device 6 connected with the electromagnetic heating system 2 disposed in the machine body 3 through a medium conveying pipeline 4, an air blower 7 disposed at an air inlet of the machine body 3, a flow guiding device 8 disposed at an air outlet of the machine body 3 for diffusing warm air, a heat accumulator 9 disposed above the machine body 3 and communicated with the medium conveying pipeline 4, the heat dissipation device 6 including a plurality of branch pipelines 61 connected with the medium conveying pipeline 4, and heat dissipation fins 62 disposed on the branch pipelines 61 and integrally formed.
The heat accumulator 9 is provided with a high-temperature steam inlet pipeline 91, a condensing medium recovery pipeline 92, a low-temperature medium liquid supplementing pipeline 93 and a high-temperature medium return pipeline 94 which are respectively connected with the medium conveying pipeline 4.
The heating element in the electromagnetic heating system 2 is a stainless steel electric heating tube, and a plurality of baffle plates for guiding the gas flow direction are arranged in the air duct of the machine body 3 between the blower 7 and the heat sink 6.
The periphery of the electromagnetic heating system 2 is provided with an insulating layer and a heat insulating layer, the insulating layer and the heat insulating layer can be materials commonly found in the market, for example, the insulating layer can be phenolic resin, epoxy resin glass fiber or polyester resin glass fiber, and the heat insulating layer can be aerogel felt, a vacuum plate and the like.
A temperature sensor and an air speed sensor which are connected with a controller of the control cabinet 1 are arranged at the drainage device 8, and the drainage device 8 can be an induced draft fan or an exhaust fan.
The heat accumulator 9 comprises a shell and a heat accumulation phase change material with the phase change temperature of 10-800 ℃ arranged in the shell.
The shell is made of heat-resistant steel, and the surface of the shell is provided with a heat-insulating material; the heat storage phase change material is one or more of wax, crystalline hydrated salt, fatty acid, stone brick or ceramic; the medium conveyed by the medium conveying pipeline is water or oil.
The heating element of the air heater is a stainless steel electric heating pipe, the inner cavity of the heater is provided with a plurality of baffle plates (guide plates), and the detention time of gas in the inner cavity is prolonged, so that the gas is fully heated, the gas is uniformly heated, and the heat exchange efficiency is improved. A stainless steel heating tube as heating element of air heater is made up by installing electrothermal wire in seamless steel tube and filling the magnesium oxide powder with good thermal conductivity and insulativity in the gap and then shrinking the tube. When current passes through the high-temperature resistance wire, the generated heat is diffused to the surface of the heating pipe through the crystallized magnesium oxide powder and then is transferred to heated air, so that the heating purpose is achieved.
After the power is supplied, the electromagnetic wire in the electromagnetic heating system 2 is powered on to generate electromagnetic eddy current to heat the iron pipe and the aluminum core, so that the temperature of the medium in the medium conveying pipeline 4 is increased. The air blower 7 blows air in the working environment into the heat dissipation device 6, so that the air can uniformly pass through the inner side and the outer side of the heat dissipation fins 62, the high-temperature probe at the air outlet timely feeds back the detected air outlet temperature and air outlet speed to the controller in the control cabinet, the controller monitors the actual working temperature and actual working air speed according to the set temperature and air speed, and the air outlet temperature and the air outlet speed are constant. And controls whether the electromagnetic heating system 2 operates.
The device is provided with a multiple overheating overload protection device, fully ensures the safety of the equipment, and can work continuously all the year around 365 days.
The heat accumulator 9 can store heat energy, and the heat energy is stored and used through a high-temperature steam inlet pipeline 91, a condensing medium recovery pipeline 92, a low-temperature medium liquid supplementing pipeline 93 and a high-temperature medium return pipeline 94 which are connected with the medium conveying pipeline 4.
The heat insulation material on the surface of the shell of the heat accumulator 9 is fiber heat insulation cotton, so that the heat insulation effect is good, the shell is firm, and the use is safe and reliable.
The heat storage phase change material is one or more of wax, crystalline hydrated salt, fatty acid, stone brick or ceramic; the medium conveyed by the medium conveying pipeline is water or oil. The temperature is continuously controlled to be 0-800 ℃, and the application is wide.
The control method of the intelligent electromagnetic air heater comprises the following steps:
step A, setting time required by heating of an intelligent electromagnetic air heater, outlet temperature, outlet air speed and temperature required by room temperature, selecting a corresponding temperature rise interval of a heat storage phase change material, and setting and controlling circulation time of heat transfer media with different temperatures;
b, selecting a preheating and temperature rising mode, setting and controlling the circulation time of heat transfer media with different temperatures, and carrying out preheating treatment;
c, after preheating is finished, indoor heating is carried out according to the heating mode corresponding to the selected heating mode;
d, monitoring the outlet temperature and the outlet wind speed of the intelligent electromagnetic air heater, and adaptively adjusting the generated deviation value until the set value is recovered;
and E, when the room temperature reaches the set temperature, storing the surplus heat into the heat accumulator 9, stopping the heat accumulator 9 until the heat accumulation volume of the heat accumulator is reached, and when the room temperature is reduced, extracting heat from the heat accumulator 9 until the heat accumulation volume of the heat accumulator 9 is reached, automatically starting the machine and returning to the step A.
The preheating and temperature rising mode comprises no preheating, namely no preheating.
The temperature in step C is raised from the normal temperature heat transfer medium, from the high temperature heat transfer medium, or from the steam.
The method for starting temperature rise from the normal-temperature heat transfer medium comprises the following steps: according to the circulation time of different heat transfer media, the normal temperature heat transfer medium enters and exits, the high temperature heat transfer medium enters and exits, and the high temperature heat transfer medium enters and exits.
The method for starting the temperature rise from the high-temperature heat transfer medium comprises the following steps: and controlling the high-temperature heat transfer medium to enter and the normal-temperature heat transfer medium to exit, and controlling the high-temperature heat transfer medium to enter and the high-temperature heat transfer medium to exit according to the circulation time of different heat transfer media.
The method for starting temperature rise from steam comprises the following steps: and controlling the steam to enter and exit from the high-temperature heat transfer medium according to the circulation time of different heat transfer media.
The heat transfer medium during temperature reduction comprises a high-temperature heat transfer medium, a normal-temperature heat transfer medium and a freezing heat transfer medium, and the temperature reduction mode is to start temperature reduction from the high-temperature heat transfer medium, start temperature reduction from the normal-temperature heat transfer medium or start temperature reduction from the freezing heat transfer medium.
The method for reducing the temperature from the high-temperature heat transfer medium comprises the following steps: according to the circulation time of different heat transfer media, the high-temperature heat transfer medium is controlled to enter and exit, the normal-temperature heat transfer medium enters and exits, the frozen heat transfer medium enters and exits, the normal-temperature heat transfer medium enters and exits, and the normal-temperature heat transfer medium enters and exits.
The method for cooling from the normal-temperature heat transfer medium comprises the following steps: the normal temperature heat transfer medium enters and exits from the high temperature heat transfer medium, the normal temperature heat transfer medium enters and exits from the normal temperature heat transfer medium, the freezing heat transfer medium enters and exits from the freezing heat transfer medium, the normal temperature heat transfer medium enters and exits from the freezing heat transfer medium, and the normal temperature heat transfer medium enters and exits from the normal temperature heat transfer medium;
the method for reducing the temperature from the beginning of freezing the heat transfer medium comprises the following steps: the freezing heat transfer medium enters and exits from the normal temperature heat transfer medium, the freezing heat transfer medium enters and exits from the freezing heat transfer medium, the normal temperature heat transfer medium enters and exits from the freezing heat transfer medium, and the normal temperature heat transfer medium enters and exits from the normal temperature heat transfer medium.
Claims (1)
1. A control method of an intelligent electromagnetic air heater is characterized by comprising the following steps:
step A, setting time required by heating of an intelligent electromagnetic air heater, outlet temperature, outlet air speed and temperature required by room temperature, selecting a corresponding temperature rise interval of a heat storage phase change material, and setting and controlling circulation time of heat transfer media with different temperatures;
b, selecting a preheating mode, setting and controlling the circulation time of heat transfer media with different temperatures, and carrying out preheating treatment, wherein the preheating mode comprises no preheating;
step C, after preheating is finished, indoor heating is carried out according to a heating mode corresponding to the selected heating mode, wherein the heating mode is to start heating from a normal-temperature heat transfer medium, start heating from a high-temperature heat transfer medium or start heating from steam;
d, monitoring the outlet temperature and the outlet wind speed of the intelligent electromagnetic air heater, and adaptively adjusting the generated deviation value until the set value is recovered;
step E, after the room temperature reaches the set temperature, storing the surplus heat into the heat accumulator (9), stopping the machine until the surplus heat reaches the heat accumulation volume of the heat accumulator (9), and when the room temperature is reduced, firstly extracting the heat from the heat accumulator (9) until the surplus heat reaches the heat accumulation volume of the heat accumulator (9), automatically starting the machine, and returning to the step A;
the intelligent electromagnetic air heater comprises a control cabinet (1), an electromagnetic heating system (2) arranged in the control cabinet (1), a machine body (3) arranged on one side of the control cabinet, a heat dissipation device (6) connected with the electromagnetic heating system (2) in the machine body (3) through a medium conveying pipeline (4), a blower (7) arranged at an air inlet of the machine body (3), a drainage device (8) arranged at an air outlet of the machine body (3) and used for diffusing warm air, and a heat accumulator (9) arranged above the machine body (3) and communicated with the medium conveying pipeline (4), wherein the heat dissipation device (6) comprises a plurality of branch pipelines (61) connected with the medium conveying pipeline (4) and heat dissipation fins (62) arranged on the branch pipelines (61) and formed integrally; a heating element in the electromagnetic heating system (2) is a stainless steel electric heating pipe, and a plurality of baffle plates for guiding the gas to flow are arranged in an air duct of the machine body (3) between the blower (7) and the heat dissipation device (6); a heating element stainless steel heating pipe of an air heater is formed by arranging an electric heating wire in a seamless steel pipe, filling magnesium oxide powder with good heat conductivity and insulativity in a gap part and then shrinking the magnesium oxide powder into the gap part;
the heat accumulator (9) comprises a shell and a heat accumulation phase change material with the phase change temperature of 10-800 ℃ arranged in the shell, wherein the shell is made of heat-resistant steel, and a heat insulation material is arranged on the surface of the shell; the heat storage phase change material is one or more of wax, crystalline hydrated salt, fatty acid, stone brick or ceramic; the medium conveyed by the medium conveying pipeline is water or oil.
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| CN201611254445.8A CN106679186B (en) | 2016-12-30 | 2016-12-30 | Control method of intelligent electromagnetic air heater |
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| CN201611254445.8A CN106679186B (en) | 2016-12-30 | 2016-12-30 | Control method of intelligent electromagnetic air heater |
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| CN106679186B true CN106679186B (en) | 2020-08-28 |
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| CN109019522A (en) * | 2018-07-24 | 2018-12-18 | 上海三夫工程技术有限公司 | The technique of high-purity sulfur gas is quickly produced based on electrical induction |
| CN112944440B (en) * | 2021-03-16 | 2022-12-27 | 西北大学 | Electric heating heat storage heating system and heating method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005180889A (en) * | 2003-12-18 | 2005-07-07 | Takashi Yamaguchi | Electric heater using i.h (electromagnetic heating) |
| CN203628797U (en) * | 2013-11-20 | 2014-06-04 | 乐山希尔电子有限公司 | Integrated intelligent electromagnetic water heating warmer |
| CN104290233A (en) * | 2014-09-25 | 2015-01-21 | 东莞市乔迪麦贸易有限公司 | Control method of shift mold cooling and heating machine |
| CN205191703U (en) * | 2015-11-16 | 2016-04-27 | 杨斯涵 | Phase -change thermal's room heater |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666517B (en) * | 2009-08-25 | 2012-07-04 | 中国电子科技集团公司第十四研究所 | Solar energy hierarchical heating system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005180889A (en) * | 2003-12-18 | 2005-07-07 | Takashi Yamaguchi | Electric heater using i.h (electromagnetic heating) |
| CN203628797U (en) * | 2013-11-20 | 2014-06-04 | 乐山希尔电子有限公司 | Integrated intelligent electromagnetic water heating warmer |
| CN104290233A (en) * | 2014-09-25 | 2015-01-21 | 东莞市乔迪麦贸易有限公司 | Control method of shift mold cooling and heating machine |
| CN205191703U (en) * | 2015-11-16 | 2016-04-27 | 杨斯涵 | Phase -change thermal's room heater |
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