阅读说明：本技术 一种用于器件冷却的冷却装置及节曲线计算方法 (Cooling device for cooling device and section curve calculation method ) 是由 尹子栋 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种用于器件冷却的冷却装置,其包括振荡腔,振荡腔内设置有叶轮,叶轮通过减速机构与电机的转轴连接,减速机构包括椭圆形的输入轮,输入轮安装在电机的转轴上,输入轮与中间轮啮合,中间轮与输出轮啮合,输入轮与中间轮和输出轮均安装在减速机构上,中间轮为三阶椭圆齿轮,输出轮为四阶椭圆齿轮；输出轮通过传动轴与叶轮连接；振荡腔通过液道与第一外部换热装置连接,振荡腔与水箱连接,水箱与第二外部换热装置连接。节曲线的计算方法为：S1-S4。本发明使得冷却液以周期性振荡的压力和流量输出；增加液道内部流体的扰动,产生紊流以降低热阻,产生强烈的脉动,流体产生稳定的紊流。(The invention discloses a cooling device for cooling a device, which comprises an oscillation cavity, wherein an impeller is arranged in the oscillation cavity, the impeller is connected with a rotating shaft of a motor through a speed reducing mechanism, the speed reducing mechanism comprises an elliptical input wheel, the input wheel is arranged on the rotating shaft of the motor, the input wheel is meshed with a middle wheel, the middle wheel is meshed with an output wheel, the input wheel, the middle wheel and the output wheel are arranged on the speed reducing mechanism, the middle wheel is a third-order elliptical gear, and the output wheel is a fourth-order elliptical gear; the output wheel is connected with the impeller through a transmission shaft; the oscillation cavity is connected with the first external heat exchange device through a liquid channel, the oscillation cavity is connected with the water tank, and the water tank is connected with the second external heat exchange device. The calculation method of the pitch curve comprises the following steps: S1-S4. The invention enables the cooling liquid to be output at the pressure and flow rate of periodic oscillation; the disturbance of the fluid in the liquid channel is increased, the turbulent flow is generated to reduce the thermal resistance, the strong pulsation is generated, and the fluid generates stable turbulent flow.)

1. A cooling device for cooling a device is characterized by comprising an oscillating cavity, wherein an impeller is arranged in the oscillating cavity, the impeller is connected with a rotating shaft of a motor through a speed reducing mechanism, the speed reducing mechanism comprises an elliptical input wheel, the input wheel is installed on the rotating shaft of the motor, the input wheel is meshed with an intermediate wheel, the intermediate wheel is meshed with an output wheel, the input wheel, the intermediate wheel and the output wheel are installed on the speed reducing mechanism, the intermediate wheel is an elliptical gear with three steps, and the output wheel is an elliptical gear with four steps; the output wheel is connected with the impeller through a transmission shaft; the oscillating cavity is connected with a first external heat exchange device through a liquid channel, the oscillating cavity is connected with a water tank, and the water tank is connected with a second external heat exchange device.

2. The cooling apparatus for cooling devices as claimed in claim 1, wherein the fluid passage is formed by connecting a plurality of S-shaped coils.

3. The cooling apparatus for device cooling as claimed in claim 1, wherein the pitch curve of the input wheel is an ellipse having an eccentricity of 0.3, the center of rotation of the input wheel is one focus of the ellipse, and the input wheel has a number of teeth of 18, a tooth height of 4mm, a module of 2.0, and a pressure angle of 20 degrees.

4. The cooling apparatus for device cooling as claimed in claim 1, wherein the center of rotation of the intermediate wheel is its centroid, the number of teeth of the intermediate wheel is 48, the tooth height is 3mm, the module is 3.0, and the transmission pressure angle is 20 degrees.

5. The cooling apparatus for device cooling as claimed in claim 1, wherein the rotation center of the output wheel is the centroid thereof, the number of teeth of the output wheel is 56, the module is 3.0, and the transmission pressure angle is 20 degrees.

6. A pitch curve calculation method for an input wheel, an intermediate wheel and an output wheel in a cooling apparatus for device cooling according to any one of claims 1 to 6, comprising the steps of:

s1: calculating the gear ratio i of the reduction mechanism₁₃：i₁₃＝i₁₂·i₂₃Wherein i₁₂For the transfer ratio of input wheel to intermediate wheel, i₂₃The transmission ratio of the middle wheel to the output wheel;

s2: according to the central torch a of the input wheel and the middle wheel and the pitch curve equation r of the input wheel₁Comprises the following steps:

s3: according to the pitch-curve equation r₁Calculating a pitch curve equation of the intermediate wheel:

s4: from the centre torch b between the intermediate wheel and the output wheel, the pitch curve equation of the output wheel 3 is calculated:

Technical Field

The invention relates to the technical field of cooling, in particular to a cooling device for cooling a device and a section curve calculation method.

Background

High heat dissipation power density requires a large flow of coolant, and the large flow of coolant generally requires a large diameter fluid passage, which has several problems:

1. the bending of the large-diameter liquid channel needs larger bending radius, the heat exchange area of unit volume is small, and the thermal resistance is large;

2. the liquid in the large-diameter liquid channel generally flows in a laminar flow, turbulence is not easy to generate, and the heat exchange coefficient is low.

3. The turbulators are typically two separate devices from the hydrodynamic pump, adding to the complexity of the system.

According to experimental verification, as long as certain hydraulic parameters are matched, self-excited oscillation pulse jet flow can be generated inside the liquid channel, and the pulse jet flow is introduced into the heat exchanger, so that the heat exchange can be strengthened by 10% -30%. The pulsation of the fluid has obvious influence on the heat exchange effect, and the flow has obvious influence on the pulsation enhanced heat exchange.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a cooling device for cooling a device and a section curve calculation method, which can increase the heat exchange effect.

In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:

the cooling device comprises an oscillation cavity, wherein an impeller is arranged in the oscillation cavity, the impeller is connected with a rotating shaft of a motor through a speed reducing mechanism, the speed reducing mechanism comprises an elliptical input wheel, the input wheel is arranged on the rotating shaft of the motor, the input wheel is meshed with a middle wheel, the middle wheel is meshed with an output wheel, the input wheel, the middle wheel and the output wheel are arranged on the speed reducing mechanism, the middle wheel is an elliptical gear with three steps, and the output wheel is an elliptical gear with four steps; the output wheel is connected with the impeller through a transmission shaft; the oscillation cavity is connected with the first external heat exchange device through a liquid channel, the oscillation cavity is connected with the water tank, and the water tank is connected with the second external heat exchange device.

Furthermore, the liquid channel is formed by connecting a plurality of S-shaped coil pipes.

Further, the pitch curve of the input wheel is an ellipse with an eccentricity of 0.3, the rotation center of the input wheel is a focus of the ellipse, the number of teeth of the input wheel is 18, the tooth height is 4mm, the modulus is 2.0, and the pressure angle is 20 degrees.

Furthermore, the rotation center of the middle wheel is the centroid, the number of teeth of the middle wheel is 48, the tooth height is 3mm, the modulus is 3.0, and the transmission pressure angle is 20 degrees.

Further, the rotation center of the output wheel is the centroid, the number of teeth of the output wheel is 56, the modulus is 3.0, and the transmission pressure angle is 20 degrees.

There is provided a pitch curve calculation method of an input wheel, an intermediate wheel and an output wheel in the above cooling apparatus for device cooling, comprising the steps of:

s1: calculating the gear ratio i of the reduction mechanism₁₃：i₁₃＝i₁₂·i₂₃Wherein i₁₂For the transfer ratio of input wheel to intermediate wheel, i₂₃The transmission ratio of the middle wheel to the output wheel;

s2: according to the central torch a of the input wheel and the middle wheel and the pitch curve equation r of the input wheel₁Comprises the following steps:

s3: according to the pitch-curve equation r₁Calculating a pitch curve equation of the intermediate wheel:

s4: from the centre torch b between the intermediate wheel and the output wheel, the pitch curve equation of the output wheel 3 is calculated:

the invention has the beneficial effects that: the invention sets up an oscillating chamber at the inlet of the liquid channel, the oscillating chamber is fitted with the impeller, carry on the disturbance through the rotation of the impeller, the impeller realizes the transmission through the retarding mechanism of the non-uniform reduction ratio and electrical machinery; the motor works at a set constant rotating speed to enable the impeller to generate periodic variation rotation, so that the cooling liquid is output at the pressure and flow of periodic oscillation; the disturbance of the fluid in the liquid channel is increased, the turbulent flow is generated to reduce the thermal resistance, the strong pulsation is generated, and the fluid generates stable turbulent flow. The pitch curve equation can be accurately calculated by utilizing the transmission ratio among the input wheel, the intermediate wheel and the output wheel, so that accurate meshing is ensured, and stable transmission is realized.

Drawings

Fig. 1 is a structural view of a cooling apparatus for device cooling.

Fig. 2 is a schematic diagram of the speed reducing mechanism.

The device comprises a first external heat exchange device 1, a liquid channel 2, a speed reducing mechanism 3, a motor 4, an impeller 5, an impeller 6, an oscillation cavity 7, a water tank 8, a second external heat exchange device 9, an intermediate wheel 10, an output wheel 11 and an input wheel.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.

As shown in fig. 1 and 2, the cooling device for cooling a device in the present scheme includes an oscillation cavity, an impeller is disposed in the oscillation cavity, the impeller is connected to a rotating shaft of a motor through a speed reducing mechanism, the speed reducing mechanism includes an elliptical input wheel, the input wheel is mounted on the rotating shaft of the motor, the input wheel is meshed with an intermediate wheel, the intermediate wheel is meshed with an output wheel, the input wheel, the intermediate wheel and the output wheel are mounted on the speed reducing mechanism, the intermediate wheel is a three-step elliptical gear, and the output wheel is a four-step elliptical gear; the output wheel is connected with the impeller through a transmission shaft; the oscillation cavity is connected with the first external heat exchange device through a liquid channel, the oscillation cavity is connected with the water tank, and the water tank is connected with the second external heat exchange device.

The liquid channel is formed by connecting a plurality of S-shaped coils, the circulation stroke of the liquid channel is increased, and heat dissipation and heat exchange are facilitated. The pitch curve of the input wheel is an ellipse with the eccentricity ratio of 0.3, the rotation center of the input wheel is a focus of the ellipse, the number of teeth of the input wheel is 18, the tooth height is 4mm, the modulus is 2.0, and the pressure angle is 20 degrees.

The center of rotation of the middle wheel is the centroid, the number of teeth of the middle wheel is 48, the tooth height is 3mm, the modulus is 3.0, and the transmission pressure angle is 20 degrees. The rotation center of the output wheel is the centroid, the number of teeth of the output wheel is 56, the modulus is 3.0, and the transmission pressure angle is 20 degrees.

The pitch curve calculation method for the input wheel, the intermediate wheel and the output wheel in the cooling device for cooling the device comprises the following steps:

s1: calculating the gear ratio i of the reduction mechanism₁₃：i₁₃＝i₁₂·i₂₃Wherein i₁₂For the transfer ratio of input wheel to intermediate wheel, i₂₃The transmission ratio of the middle wheel to the output wheel;

s2: according to the central torch a of the input wheel and the middle wheel and the pitch curve equation r of the input wheel₁Comprises the following steps:

s3: according to the pitch-curve equation r₁Calculating a pitch curve equation of the intermediate wheel:

s4: from the centre torch b between the intermediate wheel and the output wheel, the pitch curve equation of the output wheel 3 is calculated:

the invention sets up an oscillating chamber at the inlet of the liquid channel, the oscillating chamber is fitted with the impeller, carry on the disturbance through the rotation of the impeller, the impeller realizes the transmission through the retarding mechanism of the non-uniform reduction ratio and electrical machinery; the motor works at a set constant rotating speed to enable the impeller to generate periodic variation rotation, so that the cooling liquid is output at the pressure and flow of periodic oscillation; the disturbance of the fluid in the liquid channel is increased, the turbulent flow is generated to reduce the thermal resistance, the strong pulsation is generated, and the fluid generates stable turbulent flow. The pitch curve equation can be accurately calculated by utilizing the transmission ratio among the input wheel, the intermediate wheel and the output wheel, so that accurate meshing is ensured, and stable transmission is realized.