Ion wind radiator

Abstract

The present invention discloses an ion wind radiator. The ion wind radiator comprises a metal base plate, a fin array and an ion wind generating device, wherein the fin array is arranged on the lower surface of the metal base plate; the upper surface of the metal base plate is used to place electronic devices to be cooled; the discharge electrode of the ion wind generating device is arranged on the upper part of the fins of the fin array, and the collector electrode of the ion wind generating device is arranged on the lower part of the fins of the fin array. The present invention achieves heat dissipation of the electronic devices to be cooled by introducing high voltage between the discharge electrode and the collector electrode. The ion wind radiator of the present invention has the advantages of no movable parts, simple structure, small size and low energy consumption, and can effectively overcome the shortcomings of the current air-cooled radiator that has too large a space, or the fan radiator that has high noise and low efficiency.

Description

Technical Field

[0001] The invention relates to the field of heat dissipation of electronic devices, and in particular to an ion wind radiator. Background Art

[0002] Heat dissipation of electronic devices has always been a key issue in the industry. Excessive temperature will affect the performance and life of the device, and even cause the device to fail. In particular, the IGBT chip is a high-power chip with a large operating current, complex working conditions, and high switching frequency. If the chip operating temperature is too high, the device loss will increase. At present, the maximum tolerable temperature of the IGBT chip is 150℃, and the maximum working temperature is generally set to no more than 125℃. If the heat dissipation effect is not good, the chip operating temperature will exceed the set temperature or even the maximum tolerable temperature, causing device damage.

[0003] At present, the heat dissipation of IGBT chips is mainly through air cooling, water cooling, heat pipes and thermoelectric cooling. However, air cooling relies on fans, which is noisy and inefficient; water cooling has a large system and needs to be sealed; although heat pipes have good heat dissipation effects, they still need other measures such as auxiliary heat sinks to increase the heat dissipation effect; thermoelectric cooling has high efficiency and low cost. Summary of the invention

[0004] The purpose of the present invention is to provide an ion wind radiator to replace the existing heat dissipation method, so as to reduce heat dissipation noise, improve heat dissipation efficiency and effect, reduce the volume of the heat dissipation system, and reduce heat dissipation costs.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] An ion wind radiator, comprising a metal bottom plate, a fin array and an ion wind generating device;

[0007] The fin array is arranged on the lower surface of the metal base plate; the upper surface of the metal base plate is used to place electronic devices to be cooled;

[0008] The fin array includes a plurality of fins that are equally spaced and arranged parallel to each other, and a line connecting the center points of the plurality of fins is perpendicular to the fins;

[0009] The ion wind generating device comprises a plurality of discharge electrodes and a plurality of collector electrodes; the plurality of discharge electrodes are respectively arranged on the upper part of the plurality of fins, and the plurality of collector electrodes are respectively arranged on the lower part of the plurality of fins;

[0010] The plurality of discharge electrodes are connected in series with each other through discharge electrode series wires and connected to the positive electrode port of the external power supply, and the plurality of collector phases are connected in series with each other through collector series wires and connected to the negative electrode port of the external power supply.

[0011] Optionally, the collector includes a metal block, which is arranged on the upper part of the fin corresponding to the collector, and the metal block is connected in series with the collector series wire.

[0012] Optionally, the collector includes a plurality of metal blocks, the plurality of metal blocks are arranged on the upper part of the fins corresponding to the collector, the plurality of metal blocks are connected in series with each other, and are connected in series to the collector series wire.

[0013] Optionally, the discharge electrode includes a metal needle, which is vertically fixed to the lower part of the fin corresponding to the discharge electrode and connected in series with the discharge electrode series wire.

[0014] Optionally, the discharge electrode includes a plurality of metal needles, which are vertically fixed to the lower part of the fins corresponding to the discharge electrode, and the plurality of metal needles are connected in series with each other and connected in series to the discharge electrode series wire.

[0015] Optionally, the metal needle is L-shaped, the length of the first side of the metal needle is equal to half the distance between the two fins, the first side of the metal needle is vertically fixed to the lower part of the fin corresponding to the discharge electrode, and the second side of the metal needle is vertically upward.

[0016] Optionally, the discharge electrode is a metal wire, which is fixed to the lower part of the middle gap between the fin corresponding to the discharge electrode and the fin adjacent to one side of the fin corresponding to the discharge electrode through a fixed frame, and the metal wire is connected in series to the discharge electrode series conductor.

[0017] Optionally, the fixed frame includes two fixed rollers, and the two fixed rollers are fixedly connected to the fins; and a plurality of metal wire mounting holes are provided on the two fixed rollers corresponding to each other.

[0018] Optionally, the fin is provided with a groove, and the groove is used to set the collector series wire and the discharge electrode series wire.

[0019] Optionally, the material of the fin is insulating plastic or rubber.

[0020] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0021] The present invention discloses an ion wind radiator. The ion wind radiator comprises a metal base plate, a fin array and an ion wind generating device, wherein the fin array is arranged on the lower surface of the metal base plate; the upper surface of the metal base plate is used to place electronic devices to be cooled; the discharge electrode of the ion wind generating device is arranged on the upper part of the fins of the fin array, and the collector electrode of the ion wind generating device is arranged on the lower part of the fins of the fin array. By introducing high voltage between the discharge electrode and the collector electrode, the air around the discharge electrode is ionized, and the charged ions move toward the collector electrode under the action of the electric field, collide with the neutral molecules in the air to generate momentum exchange, drive the air movement to form ion wind, and the ion wind can improve the convective heat transfer effect of the metal base plate surface connected to the fin array, and realize the heat dissipation of the electronic devices to be cooled. The ion wind radiator of the present invention has the advantages of no movable parts, simple structure, small size and low energy consumption, and can effectively overcome the shortcomings of the current air-cooled radiator that has too large space, or the fan radiator that has high noise and low efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A three-dimensional diagram of the structure of an ion wind radiator with a discharge electrode being a metal needle provided by the present invention;

[0024] Figure 2 A front view of the structure of an ion wind radiator with a discharge electrode being a metal needle provided by the present invention;

[0025] Figure 3 A right side view of the structure of an ion wind radiator with a discharge electrode being a metal needle provided by the present invention;

[0026] Figure 4 A three-dimensional diagram of the structure of an ion wind radiator with a discharge electrode of a metal wire provided by the present invention;

[0027] Figure 5 A front view of the structure of an ion wind radiator with a discharge electrode of a metal wire provided by the present invention;

[0028] Figure 6 A left side view of the structure of an ion wind radiator with a discharge electrode of a metal wire provided by the present invention;

[0029] Among them, 1 is a metal base plate, 2 is a fin array, 3 is a discharge electrode, 4 is a collector, 5 is a discharge electrode series wire, 6 is a collector series wire, 7 is an electronic device to be cooled, 8 is a fixed frame, 9 is an external power supply positive port, and 10 is an external power supply negative port. DETAILED DESCRIPTION

[0030] The purpose of the present invention is to provide an ion wind radiator to replace the existing heat dissipation method, so as to reduce heat dissipation noise, improve heat dissipation efficiency and effect, reduce the volume of the heat dissipation system, and reduce heat dissipation costs.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] like Figure 1-6 As shown, the ion wind radiator provided by the present invention includes a metal base plate 1, a fin array 2 and an ion wind generating device; the fin array 2 is arranged on the lower surface of the metal base plate 1; the upper surface of the metal base plate 1 is used to place the electronic device 7 to be cooled; the fin array 2 includes a plurality of fins that are equally spaced and arranged parallel to each other, and the line connecting the center points of the plurality of fins is perpendicular to the fins; the ion wind generating device includes a plurality of discharge electrodes 3 and a plurality of collector electrodes 4; the plurality of discharge electrodes 3 are respectively arranged on the upper part of the plurality of fins, and the plurality of collector electrodes 4 are respectively arranged on the lower part of the plurality of fins; the plurality of discharge electrodes 3 are connected in series with each other through the discharge electrode series wire 5, and are connected to the positive electrode port 9 of the external power supply, and the plurality of collector electrodes 4 are connected in series with each other through the collector series wire 6, and are connected to the negative electrode port 10 of the external power supply.

[0033] The collector 4 includes one or more metal sheets. Specifically, the collector 4 includes a metal block, which is arranged on the upper part of the fin corresponding to the collector 4, and the metal block is connected in series to the collector series wire 6. Or the collector 4 includes multiple metal blocks, multiple metal blocks are arranged on the upper part of the fin corresponding to the collector 4, multiple metal blocks are connected in series to each other, and are connected in series to the collector series wire 6.

[0034] The discharge electrode 3 is a metal needle or metal wire structure. Specifically, if the collector 4 is a metal needle structure, the discharge electrode 3 includes one or more metal needles. Further, the discharge electrode 3 includes a metal needle, which is vertically fixed to the lower part of the fin corresponding to the discharge electrode 3 and connected in series to the discharge electrode series wire 5. Or the discharge electrode 3 includes multiple metal needles, multiple metal needles are vertically fixed to the lower part of the fin corresponding to the discharge electrode 3, multiple metal needles are connected in series with each other, and connected in series to the discharge electrode series wire 5. The shape of the metal needle is L-shaped, the length of the first side of the metal needle is equal to half of the distance between the two fins, the first side of the metal needle is vertically fixed to the lower part of the fin corresponding to the discharge electrode 3, and the second side of the metal needle is vertically upward.

[0035] If the discharge electrode 3 is a metal wire, the metal wire is fixed to the lower part of the middle gap between the fin corresponding to the discharge electrode 3 and the fin adjacent to one side of the fin corresponding to the discharge electrode 3 through a fixing frame 8, and the metal wire is connected in series to the discharge electrode series conductor 5.

[0036] The fixed frame 8 includes two fixed rollers, and the two fixed rollers are fixedly connected to the fins; a plurality of metal wire installation holes are arranged corresponding to each other on the two fixed rollers.

[0037] The fins are provided with grooves for arranging collector series wires 6 and discharge series wires 5 .

[0038] With respect to the technical solution of the present invention, the present invention provides four specific embodiments, but the implementation of the present invention is not limited to the implementation methods defined by the four specific embodiments provided by the present invention.

[0039] Example 1

[0040] like Figure 1 , Figure 2 and Figure 3 As shown, the ion wind radiator of the present invention includes a metal base plate 1, a fin array 2, a discharge electrode 3, a collector electrode 4, a discharge electrode series wire 5, a collector electrode series wire 6, an external power supply positive electrode port 9 and an external power supply negative electrode port 10.

[0041] The upper surface of the metal base plate 1 is bonded to the metal substrate of the IGBT module 7 (the electronic device 7 to be cooled, the electronic device 7 to be cooled in the present invention can be an IGBT module, but is not limited to an IGBT module), and the lower surface of the metal base plate 1 is provided with a fin array 2, and the collector 4 is distributed on the upper part of the fin array 2, that is, close to the side of the metal base plate 1, and the collector 4 is distributed on both sides of the inner wall of the fin array 2. The collector 4 on one side of the inner wall of each fin (one side of the inner wall of the fin array 2 is the left surface of the rightmost fin, the right surface of the leftmost fin, or the left surface or right surface of the middle fin) is composed of two metal sheets connected in series. The discharge electrode 3 is made of a metal needle and is arranged at the lower part of the fin array 2, that is, at a symmetrical position away from the center of the gap of the metal base plate 1, and the discharge electrode 3 is fixed on the fin array 2. The discharge electrode 3 and the collector 4 are connected in series through the discharge electrode series wire 5 and the collector series wire 6, respectively. As shown Figure 3 As shown, the side of the fin array 2 has an external power positive terminal 9 and an external power negative terminal 10 which are respectively connected to the discharge electrode series wire 5 and the collector electrode series wire 6 for inputting high voltage between the discharge electrode and the collector electrode.

[0042] Example 2

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, the ion wind radiator of the present invention includes a metal base plate 1, a fin array 2, a discharge electrode 3, a collector electrode 4, a discharge electrode series wire 5, a collector electrode series wire 6, an external power supply positive electrode port 9 and an external power supply negative electrode port 10.

[0044] The upper surface of the metal base plate 1 is bonded to the metal substrate of the IGBT module 7, and the fin array 2 is arranged on the lower surface of the metal base plate 1. The collector 4 is distributed on the upper part of the fin array 2, that is, close to the side of the metal base plate 1. The collector 4 is distributed on only one side of the inner wall of the fin array 2. The collector 4 on one side of the inner wall of each fin is composed of two small metal sheets connected in series. The discharge electrode 3 is made of a metal needle and arranged at the lower part of the fin array 2, that is, a symmetrical position away from the center of the gap of the metal base plate 1. The discharge electrode 3 is fixed on the fin array 2. The discharge electrode 3 and the collector 4 are connected in series through the discharge electrode series wire 5 and the collector series wire 6 respectively. The side of the fin array 2 has an external power supply positive electrode port 9 and an external power supply negative electrode port 10, which are respectively connected to the discharge electrode series wire 5 and the collector series wire 6, for inputting high voltage between the discharge electrode and the collector.

[0045] Example 3

[0046] like Figure 4 , Figure 5 and Figure 6As shown, the ion wind radiator of the present invention includes a metal base plate 1, a fin array 2, a discharge electrode 3, a collector 4, a discharge electrode series wire 5, a collector series wire 6, a discharge electrode fixing frame 8, a collector external power positive port 9 and an external power negative port 10.

[0047] The upper surface of the metal bottom plate 1 is bonded to the metal substrate of the IGBT module 7, and the fin array 2 is arranged on the lower surface of the metal bottom plate 1. The collector 4 is distributed on the upper part of the fin array 2, that is, close to the side of the metal bottom plate 1. The contact surface between the fin array 2 and the metal bottom plate 1 is a hollow structure, so that the surface of the metal bottom plate 1 is exposed and directly in contact with the air. Figure 6 As shown. Collectors 4 are distributed on both sides of the inner wall of the fin array 2, and the collector 4 on one side of the inner wall of each fin 2 is composed of a whole piece of metal sheet. The discharge electrode 3 is made of metal wire and is arranged at a symmetrical position in the center of the gap of the fin array 2 away from the metal bottom plate 1. The discharge electrode 3 is fixed to the fin array 2 through a fixed frame 8. The discharge electrode 3 and the collector 4 are connected in series through a discharge electrode series wire 5 and a collector series wire 6, respectively. The discharge electrode series wire 5 is arranged in the groove on the fin array 2 and in the fixed frame 8, and the collector series wire 6 is arranged in the groove on the fin array 2. There are external power supply positive port 9 and external power supply negative port 10 on the side of the fin array 2, which are respectively connected to the discharge electrode series wire 5 and the collector series wire 6, for inputting high voltage between the discharge electrode and the collector.

[0048] Example 4

[0049] like Figure 4 , Figure 5 and Figure 6 As shown, the ion wind radiator of the present invention includes a metal base plate 1, a fin array 2, a discharge electrode 3, a collector 4, a discharge electrode series wire 5, a collector series wire 6, a discharge electrode fixing frame 8, a collector external power positive port 9 and an external power negative port 10.

[0050] The upper surface of the metal base plate 1 is bonded to the metal substrate of the IGBT module 7, and the fin array 2 is arranged on the lower surface of the metal base plate 1. The collector 4 is distributed on the upper part of the fin array 2, that is, close to the side of the metal base plate 1. The contact surface between the fin array 2 and the metal base plate 1 is a hollow structure, so that the surface of the metal base plate 1 is exposed and directly in contact with the air. The collector 4 is distributed on one side of the inner wall of the fin array 2, and the collector 4 on one side of the inner wall of each fin 2 is composed of multiple metal sheets connected in series. The discharge electrode 3 is made of metal wire and is arranged at a symmetrical position of the gap center of the fin array 2 away from the metal base plate 1. The discharge electrode 3 is fixed on the fin array 2 through a fixed frame 8. The discharge electrode 3 and the collector 4 are connected in series through a discharge electrode series wire 5 and a collector series wire 6 respectively. The discharge electrode series wire 5 is arranged in the groove on the fin array 2 and in the fixed frame 8, and the collector series wire 6 is arranged in the groove on the fin array 2. The side of the fin array 2 is provided with an external power positive terminal 9 and an external power negative terminal 10 which are respectively connected to the discharge electrode series wire 5 and the collector electrode series wire 6 for inputting high voltage between the discharge electrode and the collector electrode.

[0051] When the ion wind radiator of the present invention is used, high voltage is added between the discharge electrode and the collector electrode to generate ion wind to drive air flow, thereby improving the heat exchange efficiency of the metal base plate. The fins are made of insulating materials such as plastic and rubber. The ion wind generating device has a simple structure and a small size. The entire ion wind radiator has the characteristics of small size, compact structure and light weight.

[0052] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0053] This article uses specific examples to illustrate the principles and implementation methods of the invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

Claims

1. An ion wind radiator, characterized in that: The ion wind radiator comprises a metal base plate, a fin array and an ion wind generating device; The fin array is arranged on the lower surface of the metal base plate; the upper surface of the metal base plate is used to place the electronic devices to be cooled; the contact surface between the fin array and the metal base plate is a hollow structure; the material of the fin is insulating plastic or rubber; The fin array includes a plurality of fins that are equally spaced and arranged parallel to each other, and a line connecting the center points of the plurality of fins is perpendicular to the fins; The ion wind generating device comprises a plurality of discharge electrodes and a plurality of collector electrodes; the plurality of discharge electrodes are respectively arranged on the upper part of the plurality of fins, and the plurality of collector electrodes are respectively arranged on the lower part of the plurality of fins; The plurality of discharge electrodes are connected in series with each other through discharge electrode series wires and connected to the positive electrode port of the external power supply, and the plurality of collector electrodes are connected in series with each other through collector electrode series wires and connected to the negative electrode port of the external power supply; The discharge electrode comprises a metal needle, which is vertically fixed to the lower part of the fin corresponding to the discharge electrode and connected in series to the discharge electrode series wire; or the discharge electrode comprises a plurality of metal needles, which are vertically fixed to the lower part of the fin corresponding to the discharge electrode, and the plurality of metal needles are connected in series to each other and connected in series to the discharge electrode series wire; The metal needle is in an L-shape, the length of the first side of the metal needle is equal to half of the distance between the two fins, the first side of the metal needle is vertically fixed to the lower part of the fin corresponding to the discharge electrode, and the second side of the metal needle is vertically upward; Or the discharge electrode is a metal wire, the metal wire is fixed to the lower part of the gap between the fin corresponding to the discharge electrode and the fin adjacent to one side of the fin corresponding to the discharge electrode through a fixed frame, and the metal wire is connected in series to the discharge electrode series conductor; the fixed frame includes two fixed rollers, and the two fixed rollers are fixedly connected to the fin; a plurality of metal wire mounting holes are arranged on the two fixed rollers corresponding to each other; The collector includes a metal block, which is arranged on the upper part of the fin corresponding to the collector, and the metal block is connected in series to the collector series wire; or the collector includes a plurality of metal blocks, which are arranged on the upper part of the fin corresponding to the collector, and the plurality of metal blocks are connected in series to each other and connected in series to the collector series wire; The fin is provided with a groove, and the groove is used to set the collector series wire and the discharge electrode series wire.

Images