Liquid cooling heat dissipation device based on LED light source
By using a liquid-cooled heat dissipation device in the LED light source of the fluorescence microscope, and using the combination of the temperature uniform plate and the liquid-cooled component, an efficient heat dissipation effect is achieved, which solves the problems of dust accumulation, noise and vibration in the air-cooled heat dissipation technology, and improves the accuracy and stability of the equipment.
Patent Information
- Application Number
- CN202421330832.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-12
AI Technical Summary
The existing fluorescence microscope LED light sources have insufficient heat dissipation effect, which has intensified the heating problem of LED lamp beads. In addition, air-cooled heat dissipation technology has problems such as dust accumulation, noise and vibration, which affects the accuracy and stability of the equipment.
A liquid-cooled heat dissipation device based on an LED light source is adopted, and the combination of a temperature uniform plate and a liquid-cooled assembly is used to achieve efficient heat dissipation through the evaporation and condensation of the liquid thermal conductivity, reducing heat exchange to external air, and reducing the possibility of dust accumulation and noise.
It significantly improves the heat dissipation ability of LED light sources, reduces the possibility of dust accumulation, and effectively reduces noise and vibration, improving the accuracy and stability of the equipment.
Smart Images
Figure CN222672042U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a light source heat dissipation device, in particular to a liquid cooling heat dissipation device based on an LED light source. Background Art
[0002] With the development of fluorescence imaging technology, more and more application scenarios require brighter fluorescence microscope light sources. At present, LED, as a new type of fluorescent light source, has gradually replaced traditional fluorescent light sources such as mercury lamps and xenon lamps. If you want to further increase the brightness of the LED light source, you must increase the power of the LED lamp beads inside the LED light source, which will further aggravate the heating problem of the LED lamp beads. Existing fluorescence microscope LED light sources generally use air-cooled heat dissipation modules with heat fins and fans, and the problem of heat surge caused by further improving the LED light source is something that traditional air-cooled heat dissipation cannot cope with.
[0003] In addition, the existing air cooling technology has the following problems:
[0004] 1. Air cooling requires frequent material exchanges with the outside world, which will cause dust accumulation inside the LED light source, further affecting the internal light path, and in severe cases, circuit short circuits and other problems may occur.
[0005] 2. Air cooling involves mechanical movement, which will generate vibration and noise, affecting the accuracy and stability of instruments and equipment. Utility Model Content
[0006] The utility model aims to provide a liquid cooling device based on an LED light source, aiming to improve the heat dissipation effect of the LED light source.
[0007] The technical solution of the utility model is as follows:
[0008] A liquid cooling heat dissipation device based on an LED light source includes a heat conducting component, wherein the heat conducting component is a temperature averaging plate, one side of the temperature averaging plate is a heat source surface connected to the LED light source, and the other side of the temperature averaging plate is a condensation surface provided with a liquid cooling component, the temperature averaging plate includes an aluminum shell and a capillary structure layer, the aluminum shell forms a closed cavity, the capillary structure layer is provided in the cavity as a liquid absorbing core layer, and the cavity is filled with a liquid heat conducting medium, and the liquid cooling component includes a liquid cooling pipe for circulating a cooling medium.
[0009] With the heat dissipation device of the utility model, the heat generated by the LED lamp beads is transferred to the heat source surface of the temperature equalizing plate, and the liquid heat-conducting medium attached to the liquid-absorbing core layer will be heated and evaporated to absorb heat, forming convection in the cavity inside the temperature equalizing plate, and the heat-conducting medium vapor flows to the condensation surface of the temperature equalizing plate, encounters the low temperature on the liquid cooling component and the condensation surface on the condensation surface, condenses and releases heat, and the heat is dissipated on the condensation surface of the temperature equalizing plate. The cavity of the temperature equalizing plate is a low vacuum environment, which is conducive to the evaporation of the heat-conducting medium. The utility model can improve the heat dissipation capacity of the LED light source through the combination of the temperature equalizing plate and the liquid cooling component. The heat dissipation device of the utility model does not need to frequently exchange heat between the LED light source and the external air like an air cooling device, which reduces the possibility of dust accumulation.
[0010] The utility model also has the following preferred designs:
[0011] The capillary structure layer of the utility model is a liquid-absorbing core layer formed by sintering copper powder, which can well absorb liquid heat-conducting medium and provide a larger area for evaporation and condensation of the heat-conducting medium.
[0012] The liquid heat-conducting medium of the utility model is deionized water, which has high thermal conductivity.
[0013] The liquid cooling pipe of the utility model is a single-line flow channel, and the liquid cooling pipe has a serpentine coil attached to the condensing surface of the temperature equalizing plate, and the serpentine coil is connected to a peristaltic pump for the flow of the cooling medium. Reducing the cross-sectional area of the flow channel facilitates increasing the flow rate of the cooling medium. The faster the fluid flow rate, the better the heat dissipation effect.
[0014] The peristaltic pump of the utility model is a liquid pump with adjustable speed or flow rate. The peristaltic pump uses a step pulse frequency to control the speed of the motor. The step pulse frequency refers to the frequency of the pulse signal sent to the motor by the driver or controller that controls the stepper motor. These pulse signals are used to drive the stepper motor to rotate, and each pulse signal drives the motor to move a step angle. For example, when a single fluorescent channel is output, the initial velocity of the water inlet of the liquid cooling pipe is adjusted to 1m / s; when the full fluorescent channel is output, the initial velocity of the water inlet of the liquid cooling pipe is adjusted to 2m / s. The flow rate of the cooling medium can be adjusted according to the power change of the LED light source to achieve the best heat dissipation effect.
[0015] Compared with the prior art, the beneficial effects achieved by the utility model are as follows:
[0016] 1. In the heat dissipation device of the utility model, the heat generated by the LED lamp beads is transferred to the heat source surface of the temperature equalizer, and the liquid heat-conducting medium attached to the liquid-absorbing core layer will be heated and evaporated to absorb heat, forming convection in the cavity inside the temperature equalizer, and the heat-conducting medium vapor flows to the condensation surface of the temperature equalizer, encounters the liquid cooling component and the low temperature on the condensation surface, condenses and releases heat, and the heat is dissipated on the condensation surface of the temperature equalizer. The heat dissipation capacity of the LED light source is improved.
[0017] 2. The utility model reduces the possibility of dust accumulation, and liquid cooling can also effectively reduce noise and vibration, reducing the impact on LED light sources. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The utility model provides a three-dimensional liquid cooling device based on LED light source Figure 1 ,The figure does not include the peristaltic pump;
[0019] Figure 2 for Figure 1 The heat sink is three-dimensional at another angle Figure 2 ;
[0020] Figure 3 for Figure 1 The heat sink is three-dimensional at another angle Figure 3 ;
[0021] Figure 4 This is an exploded view of the temperature equalizing plate of the utility model.
[0022] Description of reference numerals:
[0023] 1-LED light source; 2-temperature averaging board; 3-liquid cooling pipe; 21-aluminum housing; 22-capillary structure layer. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the utility model more obvious, the exemplary embodiments according to the utility model will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments of the utility model, and it should be understood that the utility model is not limited to the exemplary embodiments described here. Based on the embodiments of the utility model described in the utility model, all other embodiments obtained by those skilled in the art without creative work should fall within the protection scope of the utility model.
[0025] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.
[0026] It should be understood that the utility model can be implemented in different forms and should not be interpreted as being limited to the embodiments proposed herein. On the contrary, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
[0027] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be a limitation of the present invention. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising" when used in this specification determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.
[0028] In order to thoroughly understand the present invention, a detailed structure will be presented in the following description to illustrate the technical solution proposed by the present invention. The optional embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.
[0029] like Figures 1 to 4 As shown, a liquid cooling heat dissipation device based on an LED light source includes a heat conducting component, wherein the heat conducting component is a temperature averaging plate 2, one side of the temperature averaging plate 2 is a heat source surface connected to an LED light source 1, and the other side of the temperature averaging plate 2 is a condensation surface provided with a liquid cooling component, the temperature averaging plate 2 includes an aluminum shell 21 and a capillary structure layer 22, the aluminum shell 21 forms an enclosed cavity, the capillary structure layer 22 is provided in the cavity as a liquid absorbing core layer, and the cavity is filled with a liquid heat conducting medium, and the liquid cooling component includes a liquid cooling pipe 3 for circulating a cooling medium.
[0030] As a preferred embodiment:
[0031] The capillary structure layer 22 is a liquid-absorbing core layer formed by sintering copper powder, which can well absorb liquid heat-conducting medium and provide a larger area for evaporation and condensation of the heat-conducting medium. The liquid heat-conducting medium is preferably deionized water with high thermal conductivity.
[0032] In this embodiment, for example, the liquid cooling pipe 3 is a single-line flow channel, and the liquid cooling pipe 3 has a serpentine coil attached to the condensing surface of the temperature equalizing plate 2, and the serpentine coil is connected to a peristaltic pump for the flow of the cooling medium. Reducing the cross-sectional area of the flow channel facilitates increasing the flow rate of the cooling medium. The faster the fluid flow rate, the better the heat dissipation effect. The peristaltic pump is a liquid pump with adjustable speed or flow. The peristaltic pump uses a step pulse frequency to control the speed of the motor. The step pulse frequency refers to the frequency of the pulse signal sent to the motor by the driver or controller that controls the stepper motor. These pulse signals are used to drive the stepper motor to rotate, and each pulse signal drives the motor to move a step angle. For example, the peristaltic pump in this embodiment uses a BPG peristaltic pump, model BJ28D26. When a single fluorescent channel is output, the initial velocity of the water inlet of the liquid cooling pipe 3 is adjusted to 1m / s; when the full fluorescent channel is output, the initial velocity of the water inlet of the liquid cooling pipe 3 is adjusted to 2m / s. The flow rate of the cooling medium can be adjusted according to the power change of the LED light source 1 to achieve the best heat dissipation effect.
[0033] By adopting the heat dissipation device of the utility model, the heat generated by the LED lamp beads is transferred to the heat source surface of the temperature equalizing plate 2, and the liquid heat-conducting medium attached to the liquid-absorbing core layer will be heated and evaporated to absorb heat, forming convection in the cavity inside the temperature equalizing plate 2, and the heat-conducting medium vapor flows to the condensation surface of the temperature equalizing plate 2, encounters the low temperature on the liquid cooling component and the condensation surface on the condensation surface, condenses and releases heat, and the heat is dissipated on the condensation surface of the temperature equalizing plate 2. The cavity of the temperature equalizing plate 2 is a low vacuum environment, which is conducive to the evaporation of the heat-conducting medium. The utility model can improve the heat dissipation capacity of the LED light source through the combination of the temperature equalizing plate and the liquid cooling component. The use of the heat dissipation device of the utility model does not require the LED light source to frequently exchange heat with the external air like air cooling, which reduces the possibility of dust accumulation.
[0034] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A liquid cooling device based on an LED light source, comprising a heat conducting component, characterized in that: The heat conducting component is a temperature averaging plate, one side of which is a heat source surface connected to an LED light source, and the other side of which is a condensation surface provided with a liquid cooling component. The temperature averaging plate includes an aluminum shell and a capillary structure layer, and the aluminum shell forms a closed cavity, in which the capillary structure layer is provided as a liquid absorbing core layer, and the cavity is filled with a liquid heat conducting medium, and the liquid cooling component includes a liquid cooling pipe for circulating a cooling medium.
2. According to claim 1, a liquid cooling device based on an LED light source is characterized in that: The capillary structure layer is a liquid-absorbing core layer formed by sintering copper powder.
3. The liquid cooling device based on LED light source according to claim 2, characterized in that: The liquid heat-conducting medium is deionized water.
4. A liquid cooling device based on an LED light source according to any one of claims 1 to 3, characterized in that: The liquid cooling pipeline is a single-line flow channel, and the liquid cooling pipeline has a serpentine coil attached to the condensing surface of the temperature homogenizing plate, and the serpentine coil is connected to a peristaltic pump for the flow of the cooling medium.
5. The liquid cooling device based on LED light source according to claim 4, characterized in that: The peristaltic pump is a liquid pump with adjustable speed or flow rate.