CN212109001U - Heat supply unit of high-efficient heat transfer of electromagnetic heating graphite alkene oil that generates heat - Google Patents

Abstract

The utility model relates to a heating unit of high-efficient heat transfer of electromagnetic heating graphite alkene heating oil, including the cabinet body, converter, and all fix solenoid heater and the heat transfer device in the cabinet body, solenoid heater includes outer closed tube, heating sleeve, first connecting pipe and solenoid, and solenoid coils at outer closed tube lateral wall, and solenoid is connected with the converter electricity, and heating sleeve sets up in outer closed tube, and forms first heating chamber between the heating sleeve outside and outer closed tube inboard, is equipped with the through-hole on the heating sleeve; the heat exchange device comprises an outer barrel, a heat exchange coil and a second communicating pipe, the second communicating pipe is respectively communicated with the outer barrel, and the heat exchange coil is arranged in a water cavity in the outer barrel; the two ends of the heat exchange coil are respectively communicated with the first heating cavity and the heating sleeve through first communicating pipes, and an oil way circulating pump is arranged on each first communicating pipe. The utility model discloses make electromagnetic heating and the complementary realization of graphite alkene oil advantage that generates heat not only safe high-efficient but also longe-lived and maintain simple characteristics.

Description

Heat supply unit of high-efficient heat transfer of electromagnetic heating graphite alkene oil that generates heat

Technical Field

The utility model belongs to electric water heater or electric boiler field, specifically speaking relates to a heating unit of high-efficient heat transfer of electromagnetic heating graphite alkene oil that generates heat.

Background

At present, the traditional old heating equipment such as coal burning and the like fades out the vision of people along with the gradual advance of the coal-to-electricity engineering, and the old heating equipment slowly replaces the old heating equipment which uses clean energy such as electric power, namely an electric water heater, the common heating elements comprise an electric heating tube, a semiconductor PTC heating body, a nanotube and an electromagnetic coil which are used as heating elements for heat energy conversion, but still has a plurality of defects in the using process of the equipment, most prominently, the resistance heating element is easy to scale due to the high surface temperature, not only the later maintenance cost is high, but also the service life is influenced, in addition, the semiconductor heating mode has large current impact and the use of the semiconductor heating mode is influenced by the change of heating power along with the environmental temperature, and moreover, the electromagnetic heating body is directly used for heating water and can rust and corrode after a long time because the heating body is made of a magnetic iron material; therefore, new heat energy conversion equipment appears, namely, the special heat carrier oil is used as a heat exchange medium, particularly graphene heating oil, and heat exchange water supply is carried out after the heating rod heats the oil, so that the scaling risk of the heating pipe is greatly reduced, even obvious scaling risk does not appear for more than ten years, and meanwhile, the thermal inertia of the mode is low, and the heat exchange power is far greater than the heating power of the heating pipe, so that the heating efficiency is higher.

Although the oil-electric water heater using heat carrier oil as a heat medium for heat exchange solves the problems of the maximum energy efficiency and the service life of the existing electric water heater, the oil-electric water heater in the prior art has some defects, the electric water heater in the heat carrier heat exchange form in the market or the heater type adopted by an electric boiler is mainly a resistance type heating pipe, resistance type heating is conducted through a heat-conducting medium no matter inside or outside the resistance material, so that water and electricity are not separated in the true sense, the hidden danger of electric leakage caused by corrosion or breakdown of the medium exists, the electric shock danger is easy to occur to a user when the electric leakage occurs, and the unsafe factor also exists due to the high temperature thermal inertia of the heating rod; the relay directly supplies power to the resistance rod, the impact current is large, and overcurrent impact and voltage fluctuation caused by the large impact current are easy to occur to damage other electrical appliances; for example, patent 200610122514X "high carbon molecule heat carrier oil energy-saving electric water heater", and utility model patent: 2018214065575 high carbon molecular heat carrier oil electric water heater with internal and external spiral heat exchange structure, 2018218506153 high carbon molecular heat carrier oil heat supply unit, and the like, and adopts a resistance type heating pipe as a heating element, so the problems are all existed. On the other hand, on the one hand, the electromagnetic heating mode is water-electricity separated and long in service life, and is applied to a plurality of high-power electric water heaters, meanwhile, the later maintenance is less because an internal circulation pipeline structure is not required to be disassembled during equipment maintenance, for example, in 2017214165579 patent organic heat carrier boiler based on frequency conversion electromagnetic energy heating, the electromagnetic heating technology is applied to heating of heat carrier oil, but the patent is only used for heating other liquid after heat transfer is not carried out as the heating of the heat carrier oil, and meanwhile, the electromagnetic heating body also stays in a simple mode that a traditional coil is wound on a heating pipe for heating, and the structure cannot bring the maximum electromagnetic heating effect into play when the actual heating effect is not ideal due to insufficient heat transfer.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a heating unit of the high-efficient heat transfer of electromagnetic heating graphite alkene oil that generates heat, can have the promotion by a wide margin on this heating unit equipment security, life-span and the equipment stability.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

a heat supply unit for high-efficiency heat exchange of electromagnetic heating graphene heating oil comprises a cabinet body, a frequency converter, an electromagnetic coil heater and a heat exchange device which are fixed in the cabinet body,

the electromagnetic coil heater comprises an outer closed pipe, a heating sleeve, a first communicating pipe and an electromagnetic coil, wherein the electromagnetic coil is wound on the outer side wall of the outer closed pipe, the electromagnetic coil is electrically connected with a frequency converter, the heating sleeve is arranged in the outer closed pipe, a first heating cavity for containing graphene heating oil is formed between the outer side of the heating sleeve and the inner side of the outer closed pipe, and a through hole is formed in the heating sleeve;

the heat exchange device comprises an outer barrel, a heat exchange coil and second communicating pipes, wherein the two second communicating pipes for water inlet and outlet are respectively communicated with the outer barrel;

the two ends of the heat exchange coil are communicated with the first heating cavity and the heating sleeve through first communicating pipes respectively, and an oil way circulating pump is further arranged on the first communicating pipe.

Preferably, a first partition plate and a second partition plate are arranged in the first heating cavity, the upper end and the lower end of the first partition plate are fixed to the outer closed pipe, a gap is reserved between the upper end of the second partition plate and the outer closed pipe, and the lower end of the second partition plate is fixed to the outer closed pipe.

Preferably, a third partition plate is further arranged in the first heating cavity, the upper end of the third partition plate is fixed to the outer closed pipe, a gap is reserved between the lower end of the third partition plate and the outer closed pipe, and the second partition plate and the third partition plate are alternately arranged at intervals.

As a preferable scheme, an inner ring sleeve is further arranged in the heating sleeve, a second heating cavity for accommodating graphene heating oil is formed between the outer side of the inner ring sleeve and the inner side of the heating sleeve, and the inner ring sleeve is also provided with a through hole; and two ends of the heat exchange coil are respectively communicated with the first heating cavity and the inner ring sleeve through a first communicating pipe.

Preferably, the second heating chamber is also provided with a first partition plate, and a plurality of second partition plates and third partition plates alternately arranged at intervals.

Preferably, the upper part of the internal water cavity is provided with an upper oil cavity, and the bottom of the internal water cavity is sequentially provided with a lower transition oil cavity and a lower oil cavity.

According to the preferable scheme, the cabinet body comprises an equipment installation chamber used for installing the electromagnetic coil heater and the heat exchange device and an electric control chamber used for installing the frequency converter, the electric control chamber is arranged at the top of the cabinet body, a top cover is arranged at the top of the electric control chamber, the equipment installation chamber is formed by enclosing a double-layer metal plate with a heat insulation layer in the middle, and the electric control chamber is formed by enclosing a single-layer metal plate.

As the preferred scheme, still be equipped with circuit breaker, the hardware control system who is equipped with the GPRS communication, bend cable bracket and remote control antenna mouth in the automatically controlled room, still be equipped with circuit breaker handle, touch display screen, scram button, pilot lamp and wind net outside the automatically controlled room.

As a preferred scheme, a water flow switch and a temperature probe are further arranged on the second communicating pipe, and the outer barrel is formed by enclosing a double-layer metal plate with a heat-insulating layer in the middle.

Preferably, a shielding cover is further arranged outside the electromagnetic coil, a blow-down valve is further arranged on the outer closed pipe, and a plug and a ball valve are further arranged on the first communication pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model uses the electromagnetic heating technology to effectively utilize the characteristic of small safe and efficient current impact, and simultaneously, the liquid of the electromagnetic heating is graphene heating oil, so that the risk of corrosion and the like of the heating pipe is avoided, and the performance and the safety of the heating equipment are improved; and the graphene heating oil is used for heat exchange to supply circulating water, so that the advantages of electromagnetic heating and the graphene heating oil are complemented to realize the characteristics of safety, high efficiency, long service life and simple maintenance.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic side structure view of the cabinet body of the present invention;

FIG. 3 is a schematic view of the connection structure of the electromagnetic coil heater and the heat exchanger of the present invention;

fig. 4 is a schematic view of the overall structure of the electromagnetic coil heater of the present invention;

fig. 5 is a schematic view of the internal structure of the electromagnetic coil heater of the present invention;

fig. 6 is a schematic sectional view of the electromagnetic coil heater of the present invention;

fig. 7 is a schematic sectional structure view of the heat exchange device of the present invention.

Wherein, 1, a cabinet body; 101. a door body; 102. a top cover; 103. a base; 104. a circuit breaker handle; 105. a touch display screen; 106. an emergency stop button; 107. an indicator light; 108. a wind net; 109. an oil pump power supply interface; 2. an electromagnetic coil heater; 201. an electromagnetic coil; 202. a shield case; 203. a first communication pipe; 204. a through hole; 205. an outer containment tube; 206. a heat-generating sleeve; 207. an inner ring sleeve; 208. a first partition panel; 209. a second partition panel; 210. a third partition panel; 211. a blowoff valve; 3. a heat exchange device; 301. an outer cylinder; 302. an internal water cavity; 303. a heat-insulating layer; 304. a heat exchange coil; 305. a second communicating pipe; 306. an upper oil chamber; 307. a lower transition oil cavity; 308. a lower oil chamber; 309. a water flow switch; 4. an electric control chamber; 401. a frequency converter; 402. bending the cable bracket; 403. a hardware control system; 404. intelligent control hardware; 5. an oil circuit circulating pump; 6. a plug; 7. a ball valve.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and examples.

As shown in fig. 1 and 2, the heating unit for efficient heat exchange of electromagnetic heating graphene heating oil comprises a cabinet body 1, a frequency converter 401, and an electromagnetic coil heater 2 and a heat exchange device 3 both fixed in the cabinet body 1, wherein the cabinet body 1 is further provided with a base 103, the base 103 is formed by welding a steel frame and a metal plate, and a heat insulation layer is filled in the base 103 to play a role of supporting the whole equipment and also perform heat insulation on the bottom, so that the heat insulation effect of the whole system is optimal; the base of the cabinet body is provided with square through holes all around, so that the forklift or hoisting operation is facilitated. The cabinet body 1 is a cuboid, and comprises an equipment installation chamber for installing the electromagnetic coil heater 2 and the heat exchange device 3 and an electric control chamber 4 for installing the frequency converter 401, the cuboid cabinet body is good in stability, compact in structure and attractive in appearance, and the risk of easy tipping caused by a wide and flat structure is avoided. The electric control chamber 4 is arranged at the top of the cabinet body 1, the top cover 102 is arranged at the top of the electric control chamber 4, the equipment installation chamber is formed by enclosing a double-layer metal plate with a heat insulation layer 303 in the middle, and the equipment installation chamber is internally provided with a heating area, so that the metal plate is designed into a double layer structure, and the heat insulation layer is arranged in the double layer structure, so that energy is utilized to the maximum extent; the electric control chamber 4 is formed by enclosing a single-layer metal plate, the metal plate is a single layer and is convenient to dissipate heat, and meanwhile, the two side surfaces of the electric control chamber are also provided with air nets 108, so that heat dissipation is further accelerated; still be equipped with the circuit breaker, be equipped with the hardware control system 403 of GPRS communication, bend cable bracket 402 and remote control antenna mouth 404 in the automatically controlled room 4, still be equipped with the circuit breaker handle 104, touch display screen 105, scram button 106 that supply the user to operate and be used for the pilot lamp 107 of display device state outside automatically controlled room 4.

The top is placed to automatically controlled room and is avoided the bottom pipeline to take place dangerous accidents such as short circuit even explosion because of leaking in getting into the electrical part, and the while automatically controlled room individual layer panel beating all around has radiator fan can effectively dispel the heat to electrical components, increases the component life-span, improves the security simultaneously. The equipment installation chamber is also provided with a door body 101, an oil pump power supply interface 109 and a sewage discharge through hole 110.

As shown in fig. 3 to 6, the electromagnetic coil heater 2 includes an external closed tube 205, a heating sleeve 206, a first communicating tube 203 and an electromagnetic coil 201, the electromagnetic coil 201 is electrically connected to a frequency converter 401, the frequency converter outputs high-frequency alternating current to the electromagnetic coil to generate a magnetic field to heat the heating sleeve, so as to heat the internal circulation graphene heating oil, and the electromagnetic coil is an apparatus heating source, wherein the internal circulation tube is of a three-dimensional labyrinth structure. The frequency converter is a driving part of the heating coil, is arranged in the electric control chamber, converts the externally input 50HZ alternating voltage into direct current voltage, and converts the direct current voltage into high-frequency alternating current voltage with the frequency of 10-30 KHZ through the control circuit to heat the electromagnetic coil.

The electromagnetic coil 201 is wound on the outer side wall of the outer closed pipe 205, a shielding cover 202 is further arranged outside the electromagnetic coil 201, the heating sleeve 206 is arranged in the outer closed pipe 205, a first heating cavity for containing heat carrier oil is formed between the outer side of the heating sleeve 206 and the inner side of the outer closed pipe 205, and a through hole 204 is further formed in the heating sleeve 206; be equipped with first partition panel 208 and second partition panel 209 in the first heating chamber, the upper end and the lower extreme of first partition panel 208 all are fixed with outer closed tube 205, the upper end and the outer closed tube 205 of second partition panel 209 leave the clearance, and the lower extreme is fixed with outer closed tube 205. Still be equipped with third partition panel 210 in the first heating chamber, the upper end and the outer closed tube 205 of third partition panel 210 are fixed, and the lower extreme leaves the clearance with outer closed tube 205, second partition panel 209 and third partition panel 210 interval alternate arrangement.

An inner ring sleeve 207 is further arranged in the heating sleeve 206, a second heating cavity for containing graphene heating oil is formed between the outer side of the inner ring sleeve 207 and the inner side of the heating sleeve 206, and the inner ring sleeve 207 is also provided with a through hole 204; two ends of the heat exchange coil 304 are respectively communicated with the first heating cavity and the inner ring sleeve 207 through a first communication pipe 203. A first partition plate 208, and a plurality of second partition plates 209 and third partition plates 210 alternately arranged at intervals are also disposed in the second heating chamber.

As shown in fig. 5 and 6, the heat carrier oil enters the first heating cavity from the first communication pipe 203, the first partition plate 208 enables the graphene heating oil to flow only in one direction, the second partition plate 209 and the third partition plate 210 enable the graphene heating oil to flow into the next region from the upper portion and the lower portion respectively, the graphene heating oil flows into the second heating cavity through the through holes 204 at the upper portion or the lower portion of the heating sleeve 206 after reaching the last region, the graphene heating oil flows through the whole second heating cavity in the same manner after entering the second heating cavity, and finally the graphene heating oil enters the inner ring sleeve 207 through the through holes 204 on the inner ring sleeve 207 and flows to the heat exchange device through the first communication pipe.

The first partition plate 208, the second partition plate 209, and the third partition plate 210 may be arranged in a cross shape as shown in fig. 6, the first partition plate 208 and the third partition plate 210 are distributed at 180 degrees, and the two second partition plates 209 are distributed at 180 degrees; more second partition plates 209 and third partition plates 210 can be arranged to divide the first heating cavity and the second heat insulation cavity into more areas, and in addition, the circulation direction of the heat carrier oil in the first heating cavity and the circulation direction of the heat carrier oil in the second heating cavity can adopt clockwise or anticlockwise simultaneously, one of the circulation directions can also adopt anticlockwise, the other adopts clockwise, and the latter is more favorable for uniform heat conduction.

The heat exchange area can be formed to the maximum extent by the internal three-dimensional labyrinth circulation heat exchange path of the electromagnetic coil heater, and meanwhile, the internal and external surfaces of the heating tube body are simultaneously subjected to heat exchange utilization, so that the most efficient heat exchange effect of the equipment is sequentially obtained.

Still be equipped with blowoff valve 211 on the outer closed tube 205, blowoff valve 211 and corresponding blowdown pipeline are connected to the outside through the blowdown through-hole on the cabinet body 1, the blowdown pipe-line is installed on the mouth of pipe of 2 bottoms division alone of solenoid heater, install the ball valve simultaneously, the inside unnecessary graphite alkene of unloading equipment oil that generates heat for the maintenance and when not using the heat supply unit, still be equipped with end cap 6 on the first connecting pipe 203 that is located 2 tops of solenoid heater, can use suggestion cleaning means to carry out the cleanness on heating pipe internal surface after opening end cap 6, and need not unload the heating pipe alone, effective heating pipe and sealing member of not damaging simultaneously fast.

Still be equipped with oil circuit circulating pump 5 on the first connecting pipe 203, and the both ends of oil circuit circulating pump 5 still are equipped with ball valve 7, built-in small-size oil circuit circulating pump, the installation of both ends loose joint, graphite alkene heating oil pump after heat transfer in the heat transfer device sends electromagnetic coil heater to go into the heat exchanger once more after heating, and the circulation goes on, can close the ball valve at its both ends and pull down the loose joint and carry out quick replacement when the change that the oil circuit circulating pump needs maintenance change in addition and do not influence the normal use of equipment.

As shown in fig. 7, the heat exchanging device 3 includes an outer cylinder 301, a heat exchanging coil 304 and a second communicating pipe 305, the outer cylinder 301 is formed by enclosing a double-layer metal plate with a heat insulating layer 303 in the middle, the two second communicating pipes 305 for water inlet and outlet are respectively communicated with the outer cylinder 301, the second communicating pipe is further provided with a water flow switch 309 and a temperature probe, the inner part of the outer cylinder 301 is hollow to form an inner water cavity 302, the upper part of the inner water cavity 302 is provided with an upper oil cavity 306, the bottom of the inner water cavity is sequentially provided with a lower transition oil cavity 307 and a lower oil cavity 308, and the heat exchanging coil 304 is arranged in the; the heat exchange coils 304 are multiple groups, oil inlets of the heat exchange coils 304 are welded at the central position of the upper oil cavity, oil outlets of the heat exchange coils 304 are welded in the lower transition oil cavity, and the multiple groups of heat exchange coils 304 form a heat exchange system of heat carrier oil and water. The lower surface of the lower transition oil cavity is provided with a central hole, and heat carrier oil in the heat exchange coil pipe flows into the lower oil cavity through the central hole and then enters the oil-way circulating pump through the first communicating pipeline for circulating heating and heat exchange. The second communicating pipe is provided with a flange structure, and a nut is welded at the position of the mounting hole, so that the pipeline can be quickly and effectively mounted on a use site conveniently.

The heat exchange effect of high efficiency can be achieved by carrying out heat exchange in a compact space in a largest area through the circumferential uniform distribution of a plurality of groups of heat exchange coil pipes in the heat exchange device, and the efficiency is not reduced along with the increase of the service life and is always kept in a high-efficiency running state. In addition, the oil inlet pipe of the heat exchanger is in a central position, the oil outlet of the lower transition oil cavity is also in a central position, and therefore the total length of an oil path from the oil inlet to the oil outlet is the same, the graphene heating oil flow speed in each coil pipe is the same, the maximum effective utilization of heating power is guaranteed, and excessive waste dissipation or heat accumulation is avoided without effective heat exchange.

The electric control system in the electric control room comprises a circuit breaker and a circuit breaker handle thereof, a contactor, an air switch, a switching power supply, a control panel, a remote module, a cooling fan and an air network thereof, a power supply measuring transmitter, a temperature sensor, a water flow switch, a power supply protector, a touch display screen, an emergency stop button, a yellow-green-red state display lamp and the like; the control panel automatically controls the on-off of the contactor and the sending of data according to parameters set by the touch screen, data of the transmitter, numerical values of the temperature sensor and signals of the power protector, and the yellow-green-red display lamp displays the running state of the equipment, and can rapidly turn off the equipment to heat and run through the emergency stop button if the emergency situation occurs. The touch screen can be used for operating the water temperature of equipment operation, alarming to set a threshold value, operating time periods and temperature values of the time periods, checking past operating parameters and past fault records, manually operating heating pipes and circulating water pumps, starting and stopping equipment and setting relevant operating parameters of the equipment.

The utility model provides a high-frequency drive solenoid of three-dimensional maze heat transfer access structure high efficiency safety sends out hot oil for heating element heating graphite alkene, and the rethread heat exchanger carries out the intelligent control's of heat transfer for the circulating water electrical heating equipment. The utility model relates to a component among the heating system uses with other equipment are supporting, for example holding water tank, outside water system circulating pump, fin, pipeline etc to electricity is as energy source, but local or remote starting equipment operation.

The utility model discloses the on-the-spot back of connecing with other equipment pipelines of equipment fixing, the circuit breaker is installed to power cord access equipment, pulls circuit breaker handle equipment after all instruments of inspection do not have the problem and goes up, and red pilot lamp is bright this moment. Set for after each item parameter on the touch-sensitive screen and press start button equipment and get into automatic operation state, green pilot lamp is bright this moment, external circulating water pump is opened, the cold water of outside water tank passes through the bottom that the inside water cavity in the middle of the second communicating pipe entering equipment, the graphite alkene through heat exchange coil generates heat oil heat transfer back hot water flows out to outside water tank from the upper portion second communicating pipe of middle water cavity, touch water flow switch this moment and make water flow switch signal input give electrical system, thereby the contactor is corresponding opens in proper order, if this process water flow switch does not send the signal for electrical system then system failure alarm in setting for reaction time, the operating condition changes into fault state simultaneously, yellow pilot lamp lights. After the equipment normally operates, the output power of the electromagnetic coil heater 2 is correspondingly adjusted when the water temperature reaches a certain set value, the electromagnetic coil heater 2 is closed until the water temperature reaches the final operation heating temperature, at the moment, the equipment is still in an automatic operation state, and the electromagnetic coil heater 2 is automatically opened as long as the water temperature is lower than the set temperature. Because the oil inlet pipe is welded at the central position of the upper oil cavity, and the oil outlet of the lower transition oil cavity is also at the central position, the total length of oil paths passing through each coil pipe from the oil inlet to the oil outlet is the same, and therefore the parallel heat exchange effect of the heat exchange coil pipes can be ensured. When the detection value of any sensor exceeds the set value in the running process, an alarm is given and the heating is closed.

The equipment can be manually operated, when in debugging or maintenance, the touch screen can enter a manual operation interface to respectively and independently control the external circulating water pump and the electromagnetic coil heater 2, and at the moment, each sensor still plays a role in detection and protection. When equipment needs to be maintained, a blowdown ball valve is opened after a water inlet and outlet valve of an external circulating water pump is closed, and corresponding operation is carried out after redundant graphene heating oil in an electromagnetic coil heater is emptied, and when an electromagnetic coil is detached, maintenance and maintenance of parts related to a heating element can be carried out without any operation of an oil circuit circulating pipeline and a water circulating pipeline.

The inner ring sleeve 207 of the electromagnetic coil heater 2 can be cleaned by directly opening the plug at the top of the electromagnetic coil heater 2 without complicated cleaning tools by using a simple cleaning tool at ordinary times if the cleaning of the inner ring sleeve 207 is required. The utility model discloses still can long-rangely carry out local all function operations to equipment, supervisory equipment's behavior can in time receive the warning notice by the SMS simultaneously, can carry out the plant maintenance fast. Of course, the limitation of partial functions can be performed according to the account authority. Remote monitoring has made things convenient for the later stage inspection and the maintenance of equipment greatly, but the very first time discovery problem simultaneously reduces the loss that consequently brought the equipment shut down.

Claims (10)

1. The utility model provides a heat supply unit of high-efficient heat transfer of electromagnetic heating graphite alkene oil that generates heat, includes the cabinet body (1), converter (401) and all fixes solenoid heater (2) and heat transfer device (3) in the cabinet body (1), its characterized in that:

the electromagnetic coil heater (2) comprises an outer closed pipe (205), a heating sleeve (206), a first communicating pipe (203) and an electromagnetic coil (201), the electromagnetic coil (201) is wound on the outer side wall of the outer closed pipe (205), the electromagnetic coil (201) is electrically connected with a frequency converter (401), the heating sleeve (206) is arranged in the outer closed pipe (205), a first heating cavity for containing graphene heating oil is formed between the outer side of the heating sleeve (206) and the inner side of the outer closed pipe (205), and a through hole (204) is further formed in the heating sleeve (206);

the heat exchange device (3) comprises an outer barrel (301), a heat exchange coil (304) and second communicating pipes (305), wherein the two second communicating pipes (305) for water inlet and outlet are respectively communicated with the outer barrel (301), the inner part of the outer barrel (301) is hollow to form an inner water cavity (302), and the heat exchange coil (304) is arranged in the inner water cavity (302);

two ends of the heat exchange coil (304) are respectively communicated with the first heating cavity and the interior of the heating sleeve (206) through a first communicating pipe (203), and an oil-way circulating pump (5) is further arranged on the first communicating pipe (203).

2. The heating unit of efficient heat exchange of electromagnetic heating graphene heating oil according to claim 1, wherein a first partition plate (208) and a second partition plate (209) are arranged in the first heating cavity, the upper end and the lower end of the first partition plate (208) are both fixed to the outer closed pipe (205), a gap is reserved between the upper end of the second partition plate (209) and the outer closed pipe (205), and the lower end of the second partition plate is fixed to the outer closed pipe (205).

3. The heating unit of efficient heat exchange of electromagnetic heating graphene heating oil according to claim 2, wherein a third partition panel (210) is further disposed in the first heating cavity, an upper end of the third partition panel (210) is fixed to the outer closed tube (205), a gap is left between a lower end of the third partition panel and the outer closed tube (205), and the second partition panel (209) and the third partition panel (210) are alternately disposed at intervals.

4. The heating unit for efficient heat exchange of the electromagnetic heating graphene heating oil according to claim 3, wherein an inner ring sleeve (207) is further arranged in the heating sleeve (206), a second heating cavity for accommodating the graphene heating oil is formed between the outer side of the inner ring sleeve (207) and the inner side of the heating sleeve (206), and the inner ring sleeve (207) is also provided with a through hole (204); two ends of the heat exchange coil (304) are respectively communicated with the first heating cavity and the inner part of the inner ring sleeve (207) through a first communicating pipe (203).

5. The heating unit of claim 4, wherein a first partition plate (208), and a plurality of second partition plates (209) and third partition plates (210) alternately arranged at intervals are also arranged in the second heating chamber.

6. The heating unit for efficient heat exchange of the electromagnetic heating graphene heating oil as claimed in claim 1, wherein an upper oil chamber (306) is arranged at the upper part of the internal water cavity (302), and a lower transition oil chamber (307) and a lower oil chamber (308) are sequentially arranged at the bottom of the internal water cavity.

7. The heating unit of efficient heat exchange of electromagnetic heating graphene heating oil according to claim 1, characterized in that the cabinet body (1) comprises an equipment installation chamber for installing the electromagnetic coil heater (2) and the heat exchange device (3) and an electric control chamber (4) for installing the frequency converter (401), the electric control chamber (4) is arranged at the top of the cabinet body (1), a top cover (102) is arranged at the top of the electric control chamber (4), the equipment installation chamber is formed by enclosing a double-layer sheet metal with a heat insulation layer (303) in the middle, and the electric control chamber (4) is formed by enclosing a single-layer sheet metal.

8. The heating unit of efficient heat exchange of electromagnetic heating graphene heating oil according to claim 7, characterized in that a circuit breaker, a hardware control system (403) equipped with GPRS communication, a bent cable bracket (402) and a remote control antenna port (404) are further arranged in the electric control room (4), and a circuit breaker handle (104), a touch display screen (105), an emergency stop button (106), an indicator light (107) and a wind network (108) are further arranged outside the electric control room (4).

9. The heating unit for the efficient heat exchange of the electromagnetic heating graphene heating oil according to claim 1, wherein a water flow switch (309) and a temperature probe are further arranged on the second communicating pipe, and the outer cylinder (301) is formed by enclosing a double-layer metal plate with a heat insulation layer (303) in the middle.

10. The heating unit for the efficient heat exchange of the electromagnetic heating graphene heating oil according to claim 1, wherein a shielding cover (202) is further arranged outside the electromagnetic coil (201), a blowdown valve (211) is further arranged on the outer sealing pipe (205), and a plug (6) and a ball valve (7) are further arranged on the first communication pipe (203).

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