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A thyristor cooling device in a coffee machine

A technology for a heat sink and a coffee machine, applied in the field of heat sinks and thyristor heat sinks, can solve problems such as uncontrolled, damaged thyristor, and occupancy of heat sinks, and achieve the effects of relieving heating pressure and improving corrosion resistance.

Active Publication Date: 2016-09-21
NINGBO MEROL COFFEE MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure that the temperature of each cup of brewed coffee is very close, the hot water in the coffee machine needs to be continuously heated to ensure a constant temperature, and the thyristor is an important component in the heating device, so it needs to work for a long time, and the thyristor Heat will be generated during work. If the heat cannot be dissipated in time, it is easy to cause damage to the thyristor due to excessive temperature, thus achieving the purpose of not controlling
[0004] Therefore, some people directly install heat sinks on the circuit board. In order to ensure the heat dissipation effect, it is necessary to install multiple heat sinks on the circuit board to achieve a certain heat dissipation effect. This structural design not only makes the circuit board only lean against the heat sink for heat dissipation , the heat dissipation effect is not good, and because the heat sink is directly soldered and installed on the main circuit board, the heat sink occupies a large area of ​​the main circuit board, so the area of ​​the main circuit board must be increased in the design to make the main circuit board There is a space reserved for the installation of the heat sink on the

Method used

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  • A thyristor cooling device in a coffee machine
  • A thyristor cooling device in a coffee machine
  • A thyristor cooling device in a coffee machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Pre-treatment: Treat the cooling fins with an alkaline chemical degreasing solution at 55°C for 2 minutes, then perform alkali etching in 40g / L NaOH solution at 50°C for 1min, and then in 10mL / L H 2 SO 4 and 6mL / L of HNO 3 Neutralize the residual alkali in the acid etching solution, take it out after 1 minute, wash it, and dry it; the chemical composition of the degreasing solution is: NaOH: 8g / L, NaOH: 8g / L, Na 2 CO 3 : 20g / L, Na 3 PO 4 .12H 2 O: 8g / L, surfactant 1g / L;

[0041] Oxidation coloring: oxidize the pre-treated cooling fins in chromate at 65°C for 5 minutes, and then perform blackening treatment; the chemical composition of chromate is: Na 2 CrO 4 : 15g / L, Na 2 CO 4 : 3g / L, NaOH: 3g / L, NaOH 3 PO 4 : 9g / L; Co(CH 3 COO) 2 : 17g / L, oxidant KMnO 4 : 7g / L, catalyst NiSO 4 : 1.0g / L, with 5g / L HNO 3 Adjust the pH to 4-5, the temperature is 75°C, and blacken for 10 minutes;

[0042] Sealing: The colored heat dissipation fins are sealed by hydrolytic ...

Embodiment 2

[0044] Pre-treatment: Treat the cooling fins with an alkaline chemical degreasing solution at 58°C for 3 minutes, then perform alkali etching in 45g / L NaOH solution at 50-60°C for 1min, and then in 15mL / L H 2 SO 4 and 8mL / L of HNO 3 Neutralize the residual alkali in the acid etching solution, take it out after 2 minutes, wash it, and dry it; the chemical composition of the degreasing solution is: NaOH: 9g / L, NaOH: 9g / L, Na 2 CO 3 : 22g / L, Na 3 PO 4 .12H 2 O: 10g / L, surfactant 1g / L,

[0045] Oxidation coloring: the pre-treated cooling fins were oxidized in chromate at 70°C for 7 minutes, and then blackened; the chemical composition of chromate was: Na 2 CrO 4 : 18g / L, Na 2 CO 4 : 3.5g / L, NaOH: 4g / L, NaOH 3 PO 4 : 9.5g / L; Co(CH 3 COO) 2 : 19g / L, oxidant KMnO 4 : 8g / L, catalyst NiSO 4 : 1.6g / L, with 8g / L HNO 3 Adjust the pH to 4-5, the temperature is 80°C, and the blackening treatment takes 13 minutes;

[0046] Sealing: The colored heat dissipation fins are seale...

Embodiment 3

[0048] Pre-treatment: Treat the cooling fins with alkaline chemical degreasing solution at 60°C for 4 minutes, then perform alkaline etching in 50g / L NaOH solution at 60°C for 2 minutes, and then in 20mL / L H 2 SO 4 and 10mL / L of HNO 3 Neutralize the residual alkali in the acid etching solution, take it out after 3 minutes, wash it, and dry it; the chemical composition of the degreasing solution is: NaOH: 10g / L, Na 2 CO 3 : 23g / L, Na 3 PO 4 .12H 2 O: 12g / L, surfactant 1g / L;

[0049] Oxidation coloring: oxidize the pre-treated cooling fins in chromate at 75°C for 8 minutes, and then perform blackening treatment; the chemical composition of chromate is: Na 2 CrO 4 : 20g / L, Na 2 CO 4 : 4g / L, NaOH: 5g / L, NaOH 3 PO 4 : 10g / L; Co(CH 3 COO) 2 : 20g / L, oxidant KMnO 4 : 10g / L, catalyst NiSO 4 : 2.2g / L, with 10g / L HNO 3 Adjust the pH to 4-5, the temperature is 85°C, and the blackening treatment is 15 minutes;

[0050] Sealing: The colored heat dissipation fins are sealed...

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Abstract

The invention provides a thyristor cooling device in a coffee machine, which belongs to the technical field of coffee machines. It solves the problem of poor cooling effect of silicon controlled silicon in the existing coffee machine. The thyristor cooling device in the coffee machine is equipped with a water tank and a boiler in the coffee machine. This device includes a circuit board, a thyristor and a lead wire installed on the circuit board, and a radiator. The thyristor and the circuit board are solidly connected with the radiator. There are a number of cooling fins on the end face of the cooling body away from the thyristor. The outer surface of the cooling fins is covered with a layer of black film, and a cold water pipeline with an "L" shape is opened in the cooling body. The cold water pipeline is connected to the And it is composed of horizontal pipelines parallel to the thyristor and vertical pipelines parallel to the circuit board. There are cold water inlet pipes and cold water outlet pipes connected to the vertical pipelines installed at both ends of the radiator. The cold water inlet pipes communicate with the water tank and the cold water outlet pipes The water pipe communicates with the boiler. The invention has the advantages of simple structure and good heat dissipation effect.

Description

technical field [0001] The invention belongs to the technical field of coffee machines, and relates to a cooling device, in particular to a thyristor cooling device in a coffee machine. Background technique [0002] Thyristor is the abbreviation of silicon controlled rectifier. It is a high-power semiconductor device with a four-layer structure of three PN junctions. It is also called a thyristor and is one of the more commonly used semiconductor devices. There are several types of thyristors: one-way, two-way, turn-off and light control. It has the advantages of small size, light weight, high efficiency, long life, and convenient control. It is widely used in controllable rectification, voltage regulation, inverter, etc. Various automatic control and high-power electric energy conversion occasions such as transformers and non-contact switches. [0003] Existing coffee machines are generally equipped with a heating device. The cold water injected from the outside is heated ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A47J31/24H01L23/36
Inventor 刘新发
Owner NINGBO MEROL COFFEE MACHINE
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