CN215601519U

CN215601519U - Phase change heat abstractor and electromagnetic induction heating device

Info

Publication number: CN215601519U
Application number: CN202121316689.0U
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: 2021-06-12
Filing date: 2021-06-12
Publication date: 2022-01-21
Anticipated expiration: 2031-06-12

Abstract

The utility model discloses a phase change heat dissipation device and an electromagnetic induction heating device. The phase change heat dissipation device comprises a heat dissipation body, a phase change material block, a heat conduction plate and a water pipe; the heat dissipation body is provided with an accommodating cavity and a clearance groove communicated with the accommodating cavity; at least part of the water pipes penetrate through the clearance grooves and are arranged in the accommodating cavity, and the water inlet ends and the water outlet ends of the water pipes are exposed out of the heat dissipation body; the heat-conducting plate links to each other with the assembly of heat dissipation body, and the setting of phase change material piece is holding the intracavity, and the last side of phase change material piece links to each other with the heat-conducting piece laminating, and the downside and the water pipe contact of phase change material piece are connected. The phase change heat dissipation device is simple in structure, can play a heat dissipation role of a traditional radiator, and meanwhile enables the phase change material block to store partial heat, so that the heat absorbed by the phase change material block can be transferred to water in a water pipe to preheat the water, and the utilization rate of electric heat is improved by fully utilizing the electric heat.

Description

Phase change heat abstractor and electromagnetic induction heating device

Technical Field

The utility model relates to the field of radiators, in particular to a phase change heat radiator and an electromagnetic induction heating device.

Background

This section merely provides background information related to the present application so as to enable those skilled in the art to more fully and accurately understand the present application, which is not necessarily prior art.

In products such as electromagnetic induction heating water heaters, the IGBT module is used as a control element of heating power, the flowing current is large, the switching frequency is high, the loss of the IGBT module is large, the generated heat is large, the working temperature is high, and the IGBT module is not good in heat dissipation and can be damaged to influence the working operation of the whole machine.

The radiator of the existing IGBT module comprises a plurality of conditions that the radiating fins, the radiating fans, the semiconductor radiating fins or the water-cooling radiators and the like are additionally arranged on the radiating fins, the radiating areas are increased to improve the radiating efficiency, the radiators are used for cooling the IGBT module by quickly guiding away heat generated by the IGBT module, and the electric energy conversion efficiency is lower in the heating process due to the fact that the heat generated by the IGBT module is not fully utilized.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a phase-change heat dissipation device capable of collecting and storing heat for secondary utilization and an electromagnetic induction heating device using the phase-change heat dissipation device.

The utility model provides a phase change heat dissipation device, which comprises a heat dissipation body, a phase change material block, a heat conduction plate and a water pipe, wherein the heat dissipation body is provided with a heat dissipation hole; the heat dissipation body is provided with an accommodating cavity and a clearance groove communicated with the accommodating cavity; at least part of the water pipes penetrate through the clearance grooves and are arranged in the accommodating cavity, and the water inlet ends and the water outlet ends of the water pipes are exposed out of the heat dissipation body; the heat-conducting plate links to each other with the assembly of heat dissipation body, and the setting of phase change material piece is holding the intracavity, and the last side of phase change material piece links to each other with the heat-conducting piece laminating, and the downside and the water pipe contact of phase change material piece are connected.

The lower side surface of the phase-change material block is provided with a groove matched with the outer side surface of the water pipe, and at least part of the water pipe is positioned in the groove.

The extending direction of the grooves on the lower side face of the phase-change material block is consistent with the distribution direction of the water pipes in the accommodating cavity.

Wherein, the water pipe is provided with one or more bending parts which are embedded in the groove.

And a limiting structure for keeping the phase-change material block in contact connection with the water pipe is arranged between the heat conduction plate and the phase-change material block.

Wherein, limit structure includes: the limiting part is arranged on the lower side surface of the heat conducting plate in a downward protruding mode, and the limiting groove corresponding to the limiting part is provided with the surface of the phase change material block; when the heat-conducting plate is assembled on the heat-radiating body, the lower side surface of the heat-conducting plate is attached to the upper side surface of the phase-change material block, and the limiting part is positioned in the limiting groove.

Wherein, the upper side of the heat conducting plate is coated with heat conducting silicone grease, or the upper side of the heat conducting plate is provided with a heat conducting insulating layer.

The utility model also discloses an electromagnetic induction heating device, which comprises an electromagnetic heating body, an IGBT module electrically connected with the electromagnetic heating body and a control circuit board used for controlling the IGBT module; and the phase change heat dissipation device, the IGBT module and the heat conducting plate are arranged in a fitting mode.

The electromagnetic heating body comprises a metal heating tube, an insulating tube, an electromagnetic coil, a cold water inlet and a hot water outlet, wherein the insulating tube is sleeved on the outer side surface of the metal heating tube and forms a heating cavity with the metal heating tube; the water inlet end of the water pipe is connected with a water source, and the water outlet end of the water pipe is connected with a cold water inlet.

Compared with the prior art, the utility model has the following beneficial effects:

the phase-change heat dissipation device capable of storing heat for secondary utilization is simple in overall structure, heat generated by the IGBT module during working is transferred to the phase-change material block through the heat conduction plate, so that the phase-change material block partially absorbs heat generated by the IGBT module 9 during working, the effect of dissipating heat of the IGBT module is achieved, meanwhile, the phase-change material block stores partial heat generated by the IGBT module, the heat absorbed by the phase-change material block can be transferred to water in a water pipe to preheat the water, and therefore the utilization rate of electric heat is improved by fully utilizing electric heat.

Drawings

Fig. 1 is an exploded view of a phase change heat dissipation device.

Fig. 2 is a schematic view of the installation of an IGBT module onto a phase change heat sink.

Fig. 3 is a schematic structural diagram of an IGBT module mounted on a phase change heat sink.

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 to 3, the present invention provides a phase change heat dissipation device capable of storing heat for secondary use, which includes a heat dissipation body 1, a phase change material block 2, a heat conduction plate 3 and a water pipe 4; the heat dissipation body 1 is provided with an accommodating cavity 11 and a clearance groove 12 communicated with the accommodating cavity 11; at least part of the water pipe 4 passes through the clearance groove 12 and is arranged in the accommodating cavity 11, and the water inlet end 41 and the water outlet end 42 of the water pipe 4 are exposed out of the heat dissipation body 1; the phase-change material block 2 is arranged in the accommodating cavity 11 and is in contact connection with the water pipe 4; the heat-conducting plate 3 is fixed continuous with the heat dissipation body 1 in order to spacing phase change material piece 2 in holding chamber 11, ensures that phase change material piece 2 can keep linking to each other with the contact of water pipe 4 in holding chamber 11.

IGBT module 9 links to each other with the phase change heat abstractor assembly, and IGBT module 9 is connected with the contact of heat-conducting plate 3, in order to transmit the heat transfer that IGBT module 9 during operation produced for phase change material block 2 through heat-conducting plate 3, thereby let phase change material block 2 part absorb the heat that IGBT module 9 during operation produced, both played the radiating effect for IGBT module 9, simultaneously let phase change material block 2 store up the partial heat that IGBT module 9 produced again, so that the water in water pipe 4 can be given in the heat that phase change material block 2 absorbed can be given in order to preheat water, thereby be favorable to make full use of electric heat to improve the electrothermal rate of utilization.

The volume of phase change material 2 is made of any existing solid phase change material. The lower side surface of the phase change material block 2 is provided with a groove 21 matched with the outer side surface of the water pipe 4, and the extending direction of the groove 21 on the lower side surface of the phase change material block 2 is consistent with the distribution direction of the water pipe 4; at least part of the water pipe 4 is positioned in the groove 21, the contact area between the phase-change material block 2 and the water pipe 4 is increased through the groove 21, and further the heat transfer of the phase-change material block 2 to the water pipe 4 is favorably increased.

The water tube 4 is provided with one or more bent portions 40, the bent portions 40 being disposed in the groove 21. The contact area between the phase change material block 2 and the water pipe 4 can be further increased by arranging the bending part 40, so that the capability of further improving the heat transfer of the phase change material block 2 to the water pipe 4 is achieved.

And a limiting structure for keeping the phase-change material block 2 in contact connection with the water pipe 4 is arranged between the heat conduction plate 3 and the phase-change material block 2. In one embodiment, the limiting structure comprises: a limiting piece 31 which is arranged on the lower side of the heat conducting plate 3 in a downward protruding mode, and a limiting groove 22 which corresponds to the limiting piece 31 and is arranged on the surface of the phase change material block 2; when the heat-conducting plate 3 is assembled on the heat-dissipating body 1, the lower side surface of the heat-conducting plate 3 is attached to the upper side surface of the phase-change material block 2, the limiting part 31 is located in the limiting groove 22, and the limiting part 31 is matched with the limiting groove 22 to ensure that the heat-conducting plate 3, the phase-change material block 2 and the water pipe 4 can form a quick heat-conducting whole body, so that the heat conduction capability of the phase-change heat-dissipating device is improved, and the working reliability of the phase-change heat-dissipating device is ensured.

During the assembly, put into from avoiding empty groove 12 with water pipe 4 earlier and hold chamber 11 in, then put into holding chamber 11 with phase change material block 2 to let in water pipe 4 imbeds the recess 21 of 2 downside of phase change material block, then assemble heat-conducting plate 3 on heat dissipation body 1, just formed phase change heat abstractor. There are various ways in which the heat conductive plate 3 is assembled to the heat dissipation body 1. For example, the heat conductive plate 3 is provided with a plurality of first fitting holes 32, the heat dissipating body 1 is correspondingly provided with a plurality of second fitting holes 23, the heat dissipating body 1 is correspondingly provided with a plurality of third fitting holes 13, and the three are assembled and fixed integrally by fitting members (e.g., screws) sequentially passing through the first fitting holes 32, the second fitting holes 23, and the third fitting holes 13.

Particularly, as shown in fig. 2 and 3, the IGBT module 9 is attached to the heat conducting plate 3, and heat generated by the IGBT module 9 is transferred to the phase-change material block 2 through the heat conducting plate 3 to be absorbed, so as to perform a heat dissipation function of cooling the IGBT module 9.

In addition, in order to further improve the heat conduction performance between the IGBT module 9 and the heat conduction plate 3, a heat conduction silicone grease is thermally coated on the surface of the heat conduction plate 3 to increase the heat conduction capacity to the IGBT module.

In one embodiment, a heat conducting insulating layer (e.g., an insulating and heat conducting silicone sheet) is disposed between the IGBT module 9 and the heat conducting plate 3, and the heat conducting insulating layer not only ensures that the IGBT module 9 and the heat conducting plate 3 have good heat conducting capability, but also electrically isolates the IGBT module 9 from the heat conducting plate 3, thereby avoiding potential safety hazards caused by leakage of the IGBT module 9.

The utility model also discloses an electromagnetic induction heating device, which comprises an electromagnetic heating body, an IGBT module 9 electrically connected with the electromagnetic heating body, the phase change heat dissipation device for dissipating heat for the IGBT module 9 and a control circuit board (not shown) for controlling the IGBT module 9.

The electromagnetic heating body can adopt any one of the existing structures. For example, 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, an electromagnetic coil which is wound on the outer side surface of the insulating tube, and a cold water inlet and a hot water outlet which are communicated with the heating cavity; wherein, the water inlet end 41 of the water pipe 4 is connected with a water source, and the water outlet end 42 of the water pipe 4 is connected with a cold water inlet.

The electromagnetic coil is electrically connected with the IGBT module 9 so that alternating current is provided for the electromagnetic coil by the IGBT module 9, the electromagnetic coil generates an alternating magnetic field, the metal heating tube generates heat in the alternating magnetic field in an induction mode to heat water in the heating cavity, and the heated hot water is output from the hot water outlet.

Wherein, the heat that produces in the IGBT module 9 course of operation transmits for phase-change material block 2 through heat-conducting plate 3 and carries out the heat absorption to play the radiating effect of giving IGBT module 9 cooling, ensure that the work of IGBT module 9 is in order to keep reliable and stable work in safe temperature range. Meanwhile, the heat absorbed by the phase-change material blocks 2 is transferred to the water pipe 4, when cold water at a water source flows to the electromagnetic heating body from the water pipe 4, the cold water exchanges heat with the water pipe 4, the cold water in the water pipe 4 is preheated by the heat absorbed by the phase-change material blocks 2, and the preheated cold water is sent to a cold water inlet of the electromagnetic heating body through a pipeline to be supplied to the electromagnetic heating body for heating, so that the heating speed is high, and the energy conversion efficiency is high.

The utility model relates to a control circuit board, an IGBT module and an electromagnetic coil, wherein the control circuit board, the IGBT module and the electromagnetic coil are matched with each other to realize electromagnetic induction heating, the prior art (for example, CN 201010178308) is maturely used in products such as an electromagnetic stove and an electromagnetic water heater, the structure, the working mode and the like of the IGBT module are not improved in any way, but in view of the fact that the IGBT module is a heating source of an electromagnetic heating device, the utility model adopts a water-cooling radiator to replace a traditional radiating fin or a radiating fin and a radiating fan to radiate the IGBT module.

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. A phase change heat dissipation device is characterized by comprising a heat dissipation body, a phase change material block, a heat conduction plate and a water pipe; the heat dissipation body is provided with an accommodating cavity and a clearance groove communicated with the accommodating cavity; at least part of the water pipes penetrate through the clearance grooves and are arranged in the accommodating cavity, and the water inlet ends and the water outlet ends of the water pipes are exposed out of the heat dissipation body; the heat-conducting plate links to each other with the assembly of heat dissipation body, and the setting of phase change material piece is holding the intracavity, and the last side of phase change material piece links to each other with the heat-conducting piece laminating, and the downside and the water pipe contact of phase change material piece are connected.

2. The phase-change heat sink as claimed in claim 1, wherein a recess is formed in the lower side of the phase-change material block to fit the outer side of the water pipe, and at least a part of the water pipe is located in the recess.

3. The phase-change heat sink as claimed in claim 2, wherein the grooves extend along the lower side of the phase-change material block in the same direction as the water pipes are distributed in the accommodating chamber.

4. The phase-change heat dissipating device as claimed in claim 2, wherein the water pipe has one or more bent portions embedded in the groove.

5. The phase-change heat sink according to claim 1, wherein a limiting structure is disposed between the heat conducting plate and the phase-change material block for keeping the phase-change material block in contact with the water pipe.

6. The phase-change heat dissipating device according to claim 5, wherein the limiting structure comprises: the limiting part is arranged on the lower side surface of the heat conducting plate in a downward protruding mode, and the limiting groove corresponding to the limiting part is provided with the surface of the phase change material block; when the heat-conducting plate is assembled on the heat-radiating body, the lower side surface of the heat-conducting plate is attached to the upper side surface of the phase-change material block, and the limiting part is positioned in the limiting groove.

7. The phase-change heat dissipating device as claimed in claim 1, wherein the heat conductive plate is coated with a heat conductive silicone grease on an upper side thereof, or a heat conductive insulating layer is provided on the upper side thereof.

8. An electromagnetic induction heating device comprises an electromagnetic heating body, an IGBT module electrically connected with the electromagnetic heating body and a control circuit board used for controlling the IGBT module; the phase-change heat dissipation device as recited in any one of claims 1 to 7, further comprising an IGBT module attached to the heat conductive plate.

9. The electromagnetic induction heating device according to claim 8, wherein the electromagnetic heating element 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, an electromagnetic coil which is wound on the outer side surface of the insulating tube and is electrically connected with the IGBT module, and a cold water inlet and a hot water outlet which are communicated with the heating cavity; the water inlet end of the water pipe is connected with a water source, and the water outlet end of the water pipe is connected with a cold water inlet.