A radiator

Abstract

The present invention relates to a radiator electrode and a radiator used therein, wherein the radiator electrode comprises a tubular main body section, an electrode installation guide section integrally arranged at one end of the main body section, and a water connector installation guide section integrally arranged at the other end of the main body section, and drainage holes are arranged on a portion of the side wall of the main body section close to the electrode installation guide section. The radiator comprises a radiator body with a water inlet and a water outlet, wherein the radiator electrodes are press-fitted into the water inlet and the water outlet respectively, and the radiator electrode jacket is provided with a radiator water connector threadedly fitted into the water outlet and the water inlet. The present invention has a simple structure, a small number of parts, and is easy to install the radiator electrode and the radiator water connector, stable and reliable operation, and strong universal performance.

Description

Technical Field

[0001] The invention belongs to the technical field of water cooling and heat dissipation of power electronics, and in particular relates to a radiator electrode and a radiator applied thereto. Background Art

[0002] With the continuous expansion of the application field of power electronics technology, the operating voltage level of power equipment (converter valve) is also constantly increasing, and the transmission capacity and the resulting losses are increasing accordingly. Traditional air cooling technology is often difficult to meet the use requirements, so water cooling solutions are gradually introduced. The cooling water used in the converter valve equipment is neither an insulating medium nor a completely conductive medium. It is generally deionized water with a certain conductivity. The water channels at different positions in the high-voltage electric field will generate leakage current due to the existence of potential difference. The leakage current will cause the metal parts in the pipeline that are in direct contact with the cooling water to form an electrochemical reaction and corrode and leak. In severe cases, it will cause the pipeline to be punctured and cause a safety accident.

[0003] In response to the above-mentioned application technology problems, engineering and technical personnel have carried out optimization and improvement research on different solutions. By configuring metal electrodes in the form of threaded connections at the pipeline location and effectively connecting them with the surrounding metal pipeline components to form an equipotential, the electrode needles are mainly needle-shaped or spiral-shaped, which can effectively reduce the risk of electrical corrosion of metal connection components in the pipeline, but have no direct effect on the water-cooled radiator used to cool components such as IGBTs and thyristors in the converter valve equipment. The existing technology also has the principle of borrowed protection, which configures electrodes at locations where leakage current is more obvious, controls the electric field distribution around the radiator, reduces the generation of leakage current, and preferentially corrodes the metal electrodes. This method has a complex structure and a large number of accessories, which increases the failure control points in the later operation. At the same time, the application of this structural form also has obvious requirements for the selection of water pipes, and its popularity is not strong enough. Summary of the invention

[0004] The object of the present invention is to provide a radiator electrode and a radiator using the same, so as to solve the problem of complex radiator structure.

[0005] A radiator electrode of the present invention is realized as follows:

[0006] A radiator electrode comprises a tubular main body section, an electrode installation guide section integrally arranged at one end of the main body section and a water joint installation guide section integrally arranged at the other end of the main body section, wherein drainage holes are arranged on a part of the side wall of the main body section close to the electrode installation guide section.

[0007] Furthermore, the electrode installation guide section is a conical structure, and the outer diameter of the free end thereof is smaller than the outer diameter of the main body section.

[0008] Furthermore, the water joint installation guide section is a conical structure, and the outer diameter of the free end thereof is smaller than the outer diameter of the main body section.

[0009] Furthermore, the drainage holes include two holes and are distributed axially symmetrically with respect to the main body segment.

[0010] Secondly, the present invention also provides a radiator, including a radiator body with a water inlet and a water outlet, wherein the water inlet and the water outlet are respectively press-fitted with the above-mentioned radiator electrodes, and the radiator electrode jacket is provided with a radiator water connector threadedly matched with the water outlet and the water inlet.

[0011] Furthermore, the water inlet and the water outlet include a water joint connecting section, an electrode connecting section and a bottom hole section from the outside to the inside, and the inner diameters of the water joint connecting section, the electrode connecting section and the bottom hole section decrease in sequence.

[0012] Furthermore, the electrode installation guide section is installed in the electrode connecting section, and the main body section and the electrode connecting section are interference fit.

[0013] Furthermore, the radiator water joint is installed in the water joint connecting section by means of threads, and a gap is left between the inner wall of the radiator water joint and the outer wall of the radiator electrode.

[0014] Furthermore, the water joint connection section located inside the radiator water joint forms a water collecting tank;

[0015] The inner end surface of the water joint connecting section is an inclined surface, and the inner edge of the inclined surface intersects with the drainage hole, or the drainage hole is tangent to the edge of the electrode installation guide section.

[0016] Furthermore, a sealing member located between the radiator body and the radiator water joint is installed on the outer end surfaces of the water inlet and the water outlet.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects:

[0018] (1) The radiator electrode disclosed in the present invention has a simple overall structure and is easy to install, and can provide good anti-corrosion protection without affecting the flow capacity;

[0019] (2) The radiator provided by the present invention has a simple overall structure, a small number of parts, easy installation of radiator electrodes and radiator water joints, stable and reliable operation, and strong universal performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 is a structural diagram of a radiator electrode of a preferred embodiment of the present invention;

[0022] Figure 2is a cross-sectional view of a radiator electrode according to a preferred embodiment of the present invention;

[0023] Figure 3 is a cross-sectional view of the water inlet of the radiator according to a preferred embodiment of the present invention;

[0024] In the figure: radiator electrode 1, main body section 11, electrode installation guide section 12, water joint installation guide section 13, drainage hole 14, radiator body 2, water joint connecting section 21, electrode connecting section 22, bottom hole section 23, water collecting trough 24, inclined surface 25, radiator water joint 3, sealing member 4. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] like Figure 1-2 As shown, a radiator electrode includes a cylindrical main body section 11, an electrode installation guide section 12 integrally arranged at one end of the main body section 11, and a water joint installation guide section 13 integrally arranged at the other end of the main body section 11, and a drainage hole 14 is arranged on the side wall of the main body section 11 close to the electrode installation guide section 12.

[0028] The radiator electrode 1 is made of high-strength metal with bipolar anti-corrosion protection function. The base material is 316L stainless steel, which has anti-corrosion effect on the non-neutral deionized water flowing through it, preventing the formation of floating rust and affecting the water quality. At the same time, the surface of the material has a passivation film with conductive function, which does not affect the flow (current) of the electronic components carried by the radiator, while further enhancing the corrosion resistance of the radiator electrode 1 and improving the service life.

[0029] In addition, in order to adapt to the application environment and further improve the performance of the radiator electrode 1, its material can also adopt higher specification metal, such as 316-Ti, etc., and the surface of the material can also be plated with a metal coating with stronger corrosion resistance, such as nickel, zinc, etc.

[0030] In order to improve the installation efficiency of the radiator electrode 1 , the electrode installation guide section 12 is a conical structure, and the outer diameter of the free end thereof is smaller than the outer diameter of the main body section 11 .

[0031] Specifically, the taper of the electrode installation guide section 12 is 30°-60°, and the length is 1 / 10-1 / 6 of the length of the entire radiator electrode 1 .

[0032] The provision of the electrode installation guide section 12 can play a guiding role during the installation process, realize rapid and effective positioning of the radiator electrode 1 , and reduce the risk of the radiator electrode 1 and the electrode connecting section 22 being out of coaxiality.

[0033] Since the radiator electrode 1 is installed first and then the radiator water joint 3 is installed during the installation process, in order to improve the efficiency of installing the radiator water joint 3, the water joint installation guide section 13 is a conical structure, and the outer diameter of its free end is smaller than the outer diameter of the main section 11.

[0034] Specifically, the taper of the water joint installation guide section 13 is 45°, which can avoid cross interference between the radiator water joint 3 and the radiator electrode 1 during installation, thereby affecting the installation.

[0035] In order to guide the cooling water accumulated outside the radiator electrode 1 , the drainage holes 14 include two and are axially symmetrically distributed with respect to the main body section 11 .

[0036] The drainage hole 14 can be a circular or elliptical through hole, and its area is 1 / 10-1 / 6 of the flow area of ​​the radiator electrode 1.

[0037] Secondly, if Figure 3 As shown, the present invention also provides a radiator, including a radiator body 2 with a water inlet and a water outlet, the water inlet and the water outlet are respectively press-fitted with the above-mentioned radiator electrodes 1, and the radiator electrode 1 is outerly covered with a radiator water connector 3 threadedly fitted in the water outlet and the water inlet.

[0038] In order to achieve the coordinated installation of the water inlet, the water outlet, the radiator electrode 1 and the radiator water joint 3, the water inlet and the water outlet include a water joint connecting section 21, an electrode connecting section 22 and a bottom hole section 23 from the outside to the inside, and the inner diameters of the water joint connecting section 21, the electrode connecting section 22 and the bottom hole section 23 decrease successively.

[0039] In order to realize the installation of the radiator electrode 1 , the electrode installation guide section 12 is installed in the electrode connecting section 22 , and the main body section 11 and the electrode connecting section 22 are interference fit.

[0040] When the radiator electrode 1 is installed, its electrode installation guide section 12 is pressed inwardly into the electrode connecting section 22, and at the same time, part of the main body section 11 at the end where the electrode installation guide section 12 is located is also installed in the electrode connecting section 22. The main body section 11 is tightly fitted with the electrode connecting section 22 through interference fit, thereby ensuring the stability of the installation of the radiator electrode 1.

[0041] In addition, since the inner diameter of the bottom hole section 23 is smaller than the inner diameter of the electrode connecting section 22 and the two are connected via a plane, this structure has a secondary limiting effect on the installed radiator electrode 1.

[0042] Specifically, the outer diameter base value of the main body section 11 is consistent with the inner diameter of the electrode connecting section 22, and the tolerance is controlled within 15μm-80μm to ensure the stability of the fit between the two. The tolerance here is a positive tolerance, that is, the outer diameter of the main body section 11 is greater than the inner diameter of the electrode connecting section 22.

[0043] In order to realize the installation of the radiator water joint 3 , the radiator water joint 3 is installed in the water joint connecting section 21 by means of threads, and a gap is left between the inner wall of the radiator water joint 3 and the outer wall of the radiator electrode 1 .

[0044] Preferably, the inner wall of the water joint connecting section 21 is provided with metric threads or non-sealed pipe threads, and the radiator water joint 3 is installed in the water joint connecting section 21 through threaded fitting.

[0045] Choosing metric threads or non-sealed pipe threads can simplify the installation of radiator water joints.

[0046] Specifically, the radiator water joint 3 is made of high-strength engineering plastic.

[0047] Taking the water inlet as an example, after the radiator electrode 1 and the radiator water joint 3 are installed, a very small gap is left between the two. The cooling water mainly enters the radiator directly through the radiator electrode 1 via the radiator water joint 3. A small amount may flow into the water inlet through the gap between the radiator water joint 3 and the radiator electrode 1. If this part of cooling water accumulates in the water inlet for a long time, it is easy to form "dead water" and corrode the radiator substrate. In order to collect this part of cooling water, the water joint connecting section 21 located on the inner side of the radiator water joint 3 forms a water collecting tank 24.

[0048] In order to facilitate the discharge of cooling water accumulated in the collection tank, the inner end surface of the water joint connecting section 21 is a slope 25, the inner edge of the slope 25 intersects with the drainage hole 14, or the drainage hole 14 is tangent to the edge of the electrode installation guide section 12.

[0049] The positional relationship between the drainage hole 14 and the inner edge of the inclined surface 25 can ensure that the cooling water in the water collecting tank 24 completely enters the radiator.

[0050] Preferably, in order to ensure the flow efficiency of the cooling water in the water collecting tank 24 into the radiator, the area of ​​the exposed portion of the drainage hole 14 at the water collecting tank 24 is much larger than the area of ​​the portion blocked by the electrode connecting section 22 .

[0051] A small amount of water entering the water inlet will gather in the water collection tank 24 due to gravity, and then enter the radiator electrode 1 through the drainage hole 14, and then enter the inside of the radiator. At the same time, when the cooling water flow rate directly from the radiator water joint 3 through the radiator electrode 1 reaches a certain value, it will form a siphon effect on the cooling water accumulated in the water collection tank 24, accelerate its flow, and reduce the risk of corrosion to the radiator.

[0052] At the water outlet of the radiator, cooling water flows out from the inside of the radiator through the radiator electrode, enters the radiator water joint 3, and continues to flow out. Since there is a difference between the flow diameter of the radiator electrode 1 and the flow diameter of the radiator water joint 3, the cooling water diffuses at the junction of the electrode connecting section 22 and the water joint connecting section 21. A small amount of cooling water hits the radiator water joint 3 and flows into the water collecting tank 24 under the action of gravity. Like the water inlet, due to the setting of the drainage hole 14, the cooling water accumulated in the water collecting tank 24 can be introduced into the inside of the radiator electrode 1, and then discharged again through the radiator water joint 3, avoiding the formation of dead water in the water collecting tank 24 and preventing corrosion of the radiator.

[0053] In order to ensure the sealing of the installation of the radiator water joint 3, a sealing member 4 located between the radiator body 2 and the radiator water joint 3 is installed on the outer end surfaces of the water inlet and the water outlet.

[0054] The sealing member 4 is arranged on the outer end surfaces of the water inlet and the water outlet, which reduces the selection restrictions of the radiator water pipe and the radiator water joint 3, is convenient for disassembly, assembly and maintenance during use, and has strong versatility.

[0055] Preferably, the sealing member 4 can be an annular sealing gasket or an O-ring.

[0056] During the assembly process of the radiator of this embodiment, the electrode installation guide section 12 is used to perform preliminary positioning and matching with the electrode connection section 22, and then the main section 11 is crimped and installed until the drainage hole 14 is tangent to or slightly intersecting with the outer end of the electrode connection section 22. At this time, the radiator electrode 1 is flush with or slightly lower than the outer end face of the water outlet or water inlet, and the installation of the radiator electrode 1 is completed. Next, the radiator water joint 3 is installed. In this process, the water joint installation guide section 13 and the water joint connection section 21 can form a preliminary positioning to reduce the risk of local damage caused by cross interference. Then, the radiator water joint 3 is installed and connected through threads, and the seal 4 is used to seal with the outer end face of the water inlet or water outlet to complete the installation of the radiator water joint 3. At this time, the radiator water joint 3 and the radiator electrode 1 form a cross gap match.

[0057] The radiator electrode 1 of the present invention adopts a crimping installation form with a simple structure, which reduces the difficulty of design selection. In the application structure, the installation coordination with the water inlet and outlet of the radiator, as well as the radiator water joint 3 adopts a limiting guide structure, which improves the operability of the installation, reduces the passive sealing structure, reduces the risk of leakage during operation, and the overall operation is stable and reliable with strong economy.

[0058] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A radiator, characterized in that: It comprises a radiator body (2) with a water inlet and a water outlet, wherein radiator electrodes (1) are press-fitted into the water inlet and the water outlet respectively, and the outer cover of the radiator electrode (1) is provided with a radiator water connector (3) threadedly fitted into the water outlet and the water inlet; The radiator electrode (1) comprises a cylindrical main body section (11), an electrode installation guide section (12) integrally arranged at one end of the main body section (11), and a water connector installation guide section (13) integrally arranged at the other end of the main body section (11), and a drainage hole (14) is arranged on a portion of the side wall of the main body section (11) close to the electrode installation guide section (12); The water inlet and the water outlet sequentially comprise a water joint connection section (21), an electrode connection section (22) and a bottom hole section (23) from the outside to the inside, and the inner diameters of the water joint connection section (21), the electrode connection section (22) and the bottom hole section (23) decrease sequentially; The radiator water joint (3) is installed in the water joint connecting section (21) via threads, and a gap is left between the inner wall of the radiator water joint (3) and the outer wall of the radiator electrode (1); A water joint connecting section (21) located inside the radiator water joint (3) forms a water collecting tank (24); The water in the water inlet will gather in the water collecting tank (24) due to gravity, then enter the radiator electrode (1) through the drainage hole (14), and then enter the interior of the radiator; The area of ​​the exposed portion of the drainage hole (14) at the water collecting tank (24) is much larger than the area of ​​the portion blocked by the electrode connecting section (22).

2. The heat sink according to claim 1, characterized in that: The electrode installation guide section (12) is installed in the electrode connection section (22), and the main body section (11) and the electrode connection section (22) are in interference fit.

3. The heat sink according to claim 1, characterized in that: The inner end surface of the water joint connection section (21) is a slope (25), and the inner edge of the slope (25) intersects with the drainage hole (14), or the drainage hole (14) is tangent to the edge of the electrode installation guide section (12).

4. The heat sink according to claim 1, characterized in that: A sealing member (4) located between the radiator body (2) and the radiator water joint (3) is installed on the outer end surfaces of the water inlet and the water outlet.

5. The heat sink electrode according to claim 1, characterized in that: The electrode installation guide section (12) is a conical structure, and the outer diameter of the free end thereof is smaller than the outer diameter of the main body section (11).

6. The heat sink electrode according to claim 1, characterized in that: The water joint installation guide section (13) is a conical structure, and the outer diameter of its free end is smaller than the outer diameter of the main body section (11).

7. The heat sink electrode according to claim 1, characterized in that: The drainage holes (14) include two and are distributed in an axisymmetric manner relative to the main body section (11).

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