CN213661997U

CN213661997U - Electromagnetic heating device

Info

Publication number: CN213661997U
Application number: CN202022665535.4U
Authority: CN
Inventors: 王后富
Original assignee: Zhongshan Gongzhi New Energy Technology Co ltd
Current assignee: Zhongshan Gongzhi New Energy Technology Co ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-07-09
Anticipated expiration: 2030-11-17

Abstract

The utility model discloses an electromagnetic heating device, which comprises an electromagnetic heating element with a cold water inlet and a hot water outlet, an IGBT power module electrically connected with the electromagnetic heating element, a control circuit board used for controlling the IGBT power module and a water-cooling radiator used for providing heat radiation for the IGBT power module, wherein the water-cooling radiator is connected with the IGBT power module in a thermal contact way; the water-cooled radiator comprises a radiator body, a water flow channel, a water inlet pipe and a water drain pipe, wherein the water flow channel is arranged in the radiator body and is communicated between the water inlet pipe and the water drain pipe, and the water flow channel is arranged in a roundabout way from one end of the radiator body and extends to the other opposite end of the radiator body; the drain pipe is communicated with the cold water inlet. The water-cooling radiator in the electromagnetic heating device is simple in structure and small in size, can provide stable and reliable radiating effect, and does not need energy consumption.

Description

Electromagnetic heating device

Technical Field

The utility model relates to a domestic appliance especially relates to an electromagnetic heating device.

Background

Electromagnetic induction heating is an induction heating device which converts electric energy into magnetic heat energy by using the principle of electromagnetic induction. When the electromagnetic coil is externally connected with alternating current, the power control module (generally an IGBT module) is utilized to generate alternating current to the electromagnetic coil, so that the electromagnetic coil generates an alternating electromagnetic field. According to the law of electromagnetic induction, countless small eddy currents are generated when magnetic lines of force in a magnetic field pass through a metal heating part with high resistance, so that water or food in contact with the metal heating part can be heated, and heating requirements of people for cooking and washing, bathing, cooking and the like are met.

Most of the heat dissipation structures of the existing electromagnetic heating devices adopt a mode of radiating fins and even radiating fans, and the radiating fins and the ambient air are accelerated to convect through the radiating fans to carry out air cooling heat dissipation. The existing heat dissipation structure, although commonly used, has the following defects: the heat dissipation fan increases the power consumption of the electromagnetic induction device and occupies the internal space of the product, thereby resulting in a larger overall size of the product.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an electromagnetic heating device, the water-cooling radiator simple structure and size among this electromagnetic heating device are less, can provide reliable and stable radiating effect good and need not the energy consumption.

The utility model provides an electromagnetic heating device, which comprises an electromagnetic heating element with a cold water inlet and a hot water outlet, an IGBT power module electrically connected with the electromagnetic heating element, a control circuit board used for controlling the IGBT power module and a water-cooling radiator used for providing heat radiation for the IGBT power module, wherein the water-cooling radiator is connected with the IGBT power module in a thermal contact way; the water-cooled radiator comprises a radiator body, a water flow channel, a water inlet pipe and a water drain pipe, wherein the water flow channel is arranged in the radiator body and is communicated between the water inlet pipe and the water drain pipe, and the water flow channel is arranged in a roundabout way from one end of the radiator body and extends to the other opposite end of the radiator body; the drain pipe is communicated with the cold water inlet.

In one embodiment, the radiator body comprises a bottom plate, a cover plate and a sealing element arranged between the bottom plate and the cover plate, wherein a groove corresponding to the water flow channel is arranged on one side surface of the bottom plate, and the cover plate is connected with the bottom plate in a covering mode through the sealing element to seal the groove to form the water flow channel; the water inlet pipe and the water outlet pipe are arranged on the outer side edge of the bottom plate.

In one embodiment, the area of the cross-section of the water flow channel is smaller than or equal to the area of the cross-section of the water inlet pipe.

In one embodiment, the shape of the seal conforms to the shape of the vertical cross-section of the water flow passage.

In one embodiment, the bottom plate is provided with a plurality of studs, the cover plate is provided with a plurality of screw holes, and the cover plate and the bottom plate are fixed by screwing bolts which penetrate through the screw holes and the studs at corresponding positions.

In one embodiment, the IGBT power module is attached to the bottom plate or the cover plate.

In one embodiment, the base plate and the cover plate are both made of plastic, stainless steel, copper plate, or glass.

In one embodiment, both the inlet pipe and the drain pipe are exposed out of the bottom plate.

In one embodiment, the bottom plate is further provided with a fixing part.

In one embodiment, the electromagnetic heating body comprises a metal heating tube, an insulating tube which is sleeved on the outer side surface of the metal heating tube and forms a heating cavity with the metal heating tube, and an electromagnetic coil which is wound on the outer side surface of the insulating tube, wherein the cold water inlet and the hot water outlet are both communicated with the water flow channel.

The utility model discloses an electromagnetic heating device overall structure is simple, the size is less, need not the energy consumption just can improve reliable and stable radiating effect: the water flow channel which is arranged in a roundabout mode from one end of the radiator body and extends to the other opposite end of the radiator body provides heat dissipation for the IGBT power module, so that the water-cooled radiator is ensured to provide stable and reliable heat dissipation capacity, and the shape of the water flow channel, the distribution positions of the water inlet pipe and the water outlet pipe are all flexible and diverse, and the water flow channel is convenient to set. Additionally, the utility model provides an electromagnetic heating device utilizes water-cooling radiator to provide reliable radiating effect for IGBT power module, ensures that IGBT power module can keep reliable and stable work, and cold water in the rivers passageway is through absorbing the partial heat that IGBT power module produced and play the effect of preheating to the water simultaneously in the radiating process, and the water after preheating is heated by the electromagnetic heating body again, therefore water-cooling radiator both promoted electromagnetic heating device's rate of heating and for electromagnetic heating device's heating energy saving again.

Drawings

Fig. 1 is a schematic structural view of an electromagnetic heating apparatus.

Fig. 2 is an exploded view of a water-cooled radiator and a schematic view of a first embodiment of a water flow passage shape arrangement.

Fig. 3 is a schematic view of a second embodiment of a water flow channel shape arrangement.

Fig. 4 is a schematic view of a third embodiment of a water flow passage shape arrangement.

Fig. 5 is a schematic view of a fourth embodiment of a water flow passage shape arrangement.

Detailed Description

To further clarify the technical solutions and effects adopted by the present application to achieve the intended purpose, the following detailed description is given with reference to the accompanying drawings and preferred embodiments according to the present application. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 and 2, an electromagnetic heating apparatus includes an electromagnetic heating element 6 having a cold water inlet 65 and a hot water outlet 66, an IGBT power module electrically connected to the electromagnetic heating element 6, a control circuit board for controlling the IGBT power module, and a water-cooled heat sink for providing heat dissipation for the IGBT power module, the water-cooled heat sink is in thermal contact with the IGBT power module; the water-cooled radiator comprises a radiator body 1, a water flow channel 2, a water inlet pipe 3 and a water outlet pipe 4, wherein the water flow channel 2 is arranged in the radiator body 1 and communicated between the water inlet pipe 3 and the water outlet pipe 4, and the water flow channel 2 is arranged in a roundabout manner from one end of the radiator body 1 and extends to the other opposite end of the radiator body 1; wherein, the water outlet pipe 4 is communicated with the cold water inlet 65, and the water inlet pipe 3 is connected with an external water source to realize the water path connection of the electromagnetic heating device.

Wherein, the work of electromagnetic heating device, including the work of intaking and heating work, the work of intaking: the outside water gets into the rivers passageway 2 in the water-cooled radiator from inlet tube 3, discharges from drain pipe 4 through rivers passageway 2, because drain pipe 4 is linked together through pipeline and cold water inlet 65, consequently, drain pipe 4 exhaust water flows to cold water inlet 65 to in getting into electromagnetic heating body 6 from cold water inlet 65, meanwhile, heating work: the electromagnetic heating body 6 heats the water body by the work of the control circuit board and the IGBT power module, and the heated water body flows out from the hot water outlet 66 for a user to use, so that the work of the electromagnetic heating device is realized.

Therefore, when the electromagnetic heating device works, the arranged water-cooling radiator plays two roles, one of the two roles is to radiate heat and cool the IGBT power module through the water flow channel 2 in the water-cooling radiator, so that heat generated in the working process of the IGBT power module is conducted to the water body in the water flow channel 2 and is taken away by the water body, and the IGBT power module can be ensured to work stably and reliably; secondly, cold water in the water channel 2 plays a role in preheating the water body by absorbing partial heat generated by the IGBT power module in the heat dissipation process, and the preheated water body is heated by the electromagnetic heating body 6, so that the water-cooled radiator not only improves the heating speed of the electromagnetic heating device, but also saves energy for heating the electromagnetic heating device.

In this way, the water flow channel 2 is arranged to be roundabout from one end of the radiator body 1 and extends to the other opposite end of the radiator body 1, and has the following functions: firstly, the water flow channels 2 are arranged in a circuitous manner to effectively increase the length of the water flow channels 2, so that the heat conduction contact area of the water flow channels 2 and the IGBT power module is increased, and the heat conduction contact time of a flowing water body in the water flow channels 2 and the IGBT power module is prolonged, so that the heat dissipation efficiency of the water-cooled radiator is improved, and in addition, the length of the water flow channels 2 can be further increased by reducing the distance between the circuitous channels in the water flow channels 2, so that the heat dissipation efficiency of the water-cooled radiator is improved; secondly, the water flow channel 2 extends to the other opposite end of the radiator body 1 from one end of the radiator body 1, so that the upper end and the lower end of the IGBT power module can radiate heat through the water flow channel 2, and the condition that the heat radiation of the IGBT power module is unbalanced and local overheating exists is avoided.

Wherein, the electromagnetic heating device can be embodied as a water heater or a water dispenser, and the like in practice, therefore, the electromagnetic heating device is vertically arranged, in the first embodiment of the water flow channel 2 shape arrangement, the water flow channel 2 is arranged as shown in fig. 2, the water inlet pipe 3 and the water discharge pipe 4 are arranged at the bottom end of the radiator body 1, one end of the water flow channel 2 is communicated with the water inlet pipe 3 and is circuitously arranged from the bottom end to be gradually lifted to the top end of the radiator body 1 and then flows back to the bottom end and is communicated with the water discharge pipe 4, the trend of the water flow channel 2 can be set according to requirements, fig. 2 shows only one shape, in practice, the water flow channel 2 can be arranged in various shapes, in the second embodiment of the water flow channel 2 shape arrangement, as shown in fig. 3, the water inlet pipe 3 and the water discharge pipe 4 are arranged at the bottom end of the radiator body 1, one end of the water flow channel 2 is, then the water is circuitously arranged from the bottom end and gradually lifted to the top end of the radiator body 1, and then the water flows back to the bottom end and is communicated with a water drainage pipe 4; in a third embodiment of the shape arrangement of the water flow channel 2, for example, as shown in fig. 4, the water inlet pipe 3 is arranged at the bottom end of the radiator body 1, the water outlet pipe 4 is arranged at the top end of the radiator body 1, and one end of the water flow channel 2 is communicated with the water inlet pipe 3 and is arranged to be roundly and gradually lifted from the bottom end to the top end of the radiator body 1 and is communicated with the water outlet pipe 4; in a fourth embodiment of the shape of the water flow channel 2, for example, as shown in fig. 5, the water inlet pipe 3 is disposed at the bottom end of the radiator body 1, the water outlet pipe 4 is disposed at the top end of the radiator body 1, and one end of the water flow channel 2 is communicated with the water inlet pipe 3 and is arranged to detour up and down from the bottom end to the top end of the radiator body 1, so that the water flow channel 2 is arranged from one side of the radiator body 1 to the other opposite side and extends to the top end to be communicated with the water outlet. From this it can be known, the arranging of rivers passageway 2 sets up in a flexible way various, can set up to different shapes according to the demand of difference, in order to satisfy different demands, it is same, inlet tube 3 and drain pipe 4's distribution position is nimble various, inlet tube 3 and drain pipe 4 both can all set up in the top of radiator body 1, below or side, also can separately set up around radiator body 1 as required, for example, inlet tube 3 is located radiator body 1's top and drain pipe 4 is located radiator body 1's below, or inlet tube 3 is located radiator body 1's left side or right side and drain pipe 4 is located radiator body 1's top.

Therefore, the utility model discloses an electromagnetic heating device overall structure is simple, the size is less, need not the energy consumption just can improve reliable and stable radiating effect: the water flow channel 2 which is arranged in a roundabout mode from one end of the radiator body and extends to the other opposite end of the radiator body provides heat dissipation for the IGBT power module, so that the water-cooled radiator is ensured to provide stable and reliable heat dissipation capacity, and the shape of the water flow channel 2, the distribution positions of the water inlet pipe and the water outlet pipe are all flexible and diverse, and the water flow channel is convenient to set. Additionally, the utility model provides an electromagnetic heating device utilizes water-cooling radiator to provide reliable radiating effect for IGBT power module, ensures that IGBT power module can keep reliable and stable work, and cold water in the rivers passageway 2 in the radiating process simultaneously plays the effect of preheating to the water through the partial heat that absorbs IGBT power module production, and the water after preheating is heated by electromagnetic heat-generating body 6 again, therefore water-cooling radiator both promotes electromagnetic heating device's rate of heating and for electromagnetic heating device's heating energy saving again.

In the electromagnetic heating apparatus, it should be noted that the electromagnetic heating element 6 may be any one of the structures in the related art. For example, the electromagnetic heating element 6 includes a metal heating tube 61, an insulating tube 62 sleeved on the outer side surface of the metal heating tube 61 and forming a heating chamber 64 with the metal heating tube 61, and an electromagnetic coil 63 wound on the outer side surface of the insulating tube 62, and the cold water inlet 65 and the hot water outlet 66 are both communicated with the water flow channel 2. Wherein, the metal heating tube 61 is provided with a water hole to communicate the heating cavity 64 with the inner cavity of the metal heating tube 61, and the electromagnetic coil 63 is electrically connected with the IGBT power module to provide alternating current for the electromagnetic coil 63 by the IGBT power module.

Still, mutually support between control circuit board, IGBT power module and the solenoid 63 among the electromagnetic heating device and realize the electromagnetic induction heating, this is prior art (for example refer to CN 201010178308), has maturely used among products such as electromagnetism kitchen range, electromagnetic water heater, the utility model discloses do not carry out any improvement to IGBT power module's structure, working method etc. nevertheless in view of IGBT power module is electromagnetic heating device's the source that generates heat, and the utility model discloses a water-cooling radiator has been adopted and has been replaced traditional fin or fin and radiator fan to IGBT power module's radiating mode.

As shown in fig. 2, in order to facilitate the manufacture of the water-cooled heat sink, the heat sink body 1 includes a bottom plate 11, a cover plate 12 and a sealing member 13 disposed between the bottom plate 11 and the cover plate 12, a groove corresponding to the water flow channel 2 is disposed on one side surface of the bottom plate 11, and the cover plate 12 is covered and connected with the bottom plate 11 through the sealing member 13 to seal the groove to form the water flow channel 2; the water inlet pipe 3 and the water outlet pipe 4 are arranged on the outer side edge of the bottom plate 11. Therefore, the bottom plate 11, the sealing element 13 and the cover plate 12 are arranged, so that the groove, the sealing element 13 and the cover plate 12 can be enclosed together to form the water flow channel 2, and the water-cooled radiator is simple in structure and convenient to produce; correspondingly, when the water-cooling radiator is installed, the sealing element 13 is only required to be placed on the end face of the groove, and then the cover plate 12 is fixedly connected with the bottom plate 11 to enable the sealing element 13 to be hermetically pressed on the end face of the groove, so that installation can be completed, and installation is convenient.

Wherein, the area of the cross section of rivers passageway 2 is less than or equal to the area of the cross section of inlet tube 3, makes the velocity of flow that gets into the water in rivers passageway 2 from inlet tube 3 become fast, and then is favorable to accelerating the whole velocity of flow of water in rivers passageway 2 to the heat that IGBT power module produced is taken away to faster, promotes water-cooling radiator to the radiating efficiency of IGBT power module, the job stabilization of guarantee equipment.

Wherein, the shape of sealing member 13 is unanimous with the shape of the vertical cross-section of rivers passageway 2, then the installation location of the slot of being convenient for and sealing member 13, when the installation, only need through the diagonal angle location of sealing member 13 and slot, can realize the whole location of slot and sealing member 13, the location is simple and can not misplace, has the convenient advantage of location.

The bottom plate 11 is provided with a plurality of studs 112, the cover plate 12 is provided with a plurality of screw holes 121, and the cover plate 12 and the bottom plate 11 are fixed by screwing bolts penetrating through the screw holes 121 and the studs 112 at corresponding positions, so that the structure is simple and the installation is convenient.

The IGBT power module is attached to the bottom plate 11 or the cover plate 12, and in order to improve the heat dissipation efficiency of the water-cooled heat sink, a heat conductive silicone grease is preferably coated on the outer surface of the bottom plate 11 or the cover plate 12 to increase the heat conduction capability to the IGBT power module.

Further, the base plate 11 and the cover plate 12 are made of plastic, stainless steel, copper plate, or glass. In order to facilitate the manufacture of the bottom plate 11, the bottom plate 11 can be integrally formed by adopting an injection molding mode, and the production is simple; in order to further improve the heat dissipation efficiency of the water-cooled heat sink, the bottom plate 11 and the cover plate 12 are preferably made of a material having excellent heat conduction performance, such as stainless steel, copper plate or glass; in addition, when the electromagnetic heating device is a water dispenser, the water dispenser needs to meet the relevant food standards for the material of the parts in direct contact with water, and therefore, the water-cooled radiator is preferably made of glass or food-grade stainless steel.

Wherein, inlet tube 3 and drain pipe 4 all expose bottom plate 11 to make things convenient for other mouths of a river to connect with inlet tube 3 and drain pipe 4 and connect.

The bottom plate 11 is further provided with a fixing portion 113, so that the water-cooled heat sink can be conveniently fixed on other objects through the fixing portion 113.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electromagnetic heating device comprises an electromagnetic heating body (6) with a cold water inlet (65) and a hot water outlet (66), an IGBT power module electrically connected with the electromagnetic heating body (6), a control circuit board used for controlling the IGBT power module and a water-cooling radiator used for providing heat dissipation for the IGBT power module, wherein the water-cooling radiator is in thermal contact connection with the IGBT power module; the water-cooled radiator is characterized by comprising a radiator body (1), a water flow channel (2), a water inlet pipe (3) and a water drain pipe (4), wherein the water flow channel (2) is arranged in the radiator body (1) and communicated between the water inlet pipe (3) and the water drain pipe (4), and the water flow channel (2) is arranged in a roundabout manner from one end of the radiator body (1) and extends to the other opposite end of the radiator body (1); the drain pipe (4) is communicated with the cold water inlet (65).

2. The electromagnetic heating device according to claim 1, wherein the radiator body (1) comprises a bottom plate (11), a cover plate (12) and a sealing member (13) arranged between the bottom plate (11) and the cover plate (12), a groove corresponding to the water flow channel (2) is arranged on one side surface of the bottom plate (11), and the water flow channel (2) is formed by sealing the groove when the cover plate (12) is connected with the bottom plate (11) in a covering manner through the sealing member (13); the water inlet pipe (3) and the water outlet pipe (4) are arranged on the outer side of the bottom plate (11).

3. Electromagnetic heating device according to claim 1, characterized in that the cross-sectional area of the water flow channel (2) is smaller than or equal to the cross-sectional area of the water inlet pipe (3).

4. Electromagnetic heating device, according to claim 2, characterized in that the shape of the seal (13) corresponds to the shape of the vertical section of the water flow channel (2).

5. The electromagnetic heating device according to claim 2, wherein the base plate (11) is provided with a plurality of studs (112), the cover plate (12) is provided with a plurality of screw holes (121), and the cover plate (12) and the base plate (11) are fixed by screwing screws through the screw holes (121) and the studs (112) at corresponding positions.

6. Electromagnetic heating device according to claim 2, characterized in that the IGBT power modules are arranged attached to the base plate (11) or the cover plate (12).

7. Electromagnetic heating device according to claim 2, characterized in that the base plate (11) and the cover plate (12) are made of plastic, stainless steel, copper plate or glass.

8. Electromagnetic heating device according to claim 2, characterized in that the inlet pipe (3) and the outlet pipe (4) are exposed from the bottom plate (11).

9. Electromagnetic heating device according to claim 2, characterised in that the base plate (11) is further provided with a fixing portion (113).

10. The electromagnetic heating device according to claim 1, wherein the electromagnetic heating element (6) comprises a metal heating tube (61), an insulating tube (62) sleeved on the outer side surface of the metal heating tube (61) and forming a heating cavity (64) with the metal heating tube (61), and an electromagnetic coil (63) wound on the outer side surface of the insulating tube (62), and the cold water inlet (65) and the hot water outlet (66) are both communicated with the water flow channel (2).