Customization Process

01

Gather Requirements

We provide design sketches and price estimates for customer evaluation.

02

Provide Design
and Quote

We provide design sketches and price estimates for customer evaluation.

03

Sample Production

We provide design sketches and price estimates for customer evaluation.

04

Sample Testing

We provide design sketches and price estimates for customer evaluation.

05

Mass Production

We provide design sketches and price estimates for customer evaluation.

06

Product Delivery

We provide design sketches and price estimates for customer evaluation.

01

Gather Requirements

02

Provide Design and Quote

03

Sample Production

04

Sample Testing

05

Mass Production

06

Product Delivery

Custom Service Case

Huajing temperature control assembly is widely used in reagent compartment of biochemical immunodiagnostic equipment.

• Application：

  The temperature control module of in vitro diagnostic equipment is mainly used to provide temperature protection for chemical reactions, enzymatic reactions, bacterial culture, reagent storage, etc., and can be divided into heating constant temperature module and cooling constant temperature module.

• Why Need to Customize：

  The reagent compartment of the biochemical immunodiagnostic equipment usually includes: a refrigeration compartment, a semiconductor refrigeration module, a temperature control system, etc., and the equipment absorbs a certain amount of reagent from the reagent bottle in the reagent compartment when sampling and analyzing.

  
  

  In order to ensure the safety of the reagents in the reagent chamber, the reagent chamber needs to be controlled by the refrigeration and temperature control system of the semiconductor refrigeration module within 30 minutes of starting up to make the reagent chamber reach and maintain a temperature of 2-8°C, and it needs to be adjusted according to specific needs. Make corresponding solutions. At present, in the temperature control system of the reagent warehouse, the semiconductor cooling assemblies designed by Huajing mostly use air cooling and liquid cooling, and the liquid cooling has the highest cooling efficiency.

• Solution：

  Internal and external forced convection：

  
  

  The reagent pot is an important part for storing the detection kit. Usually the reagent must be stored at a suitable temperature. Therefore, it is particularly important to use good thermal control means to control the air temperature inside the reagent pot. The original structure model of a reagent pot is shown in the figure below. The upper part of the model is the main structure of the reagent pot, and the lower part is the corresponding temperature control cooling system.

  
  

  
  

       

  
  

  
  

  
  

   
  

  
  

  
  

  
  

  
  

  
  

  
  

  
  

  
  

  
  

  The figure below is a cross-sectional view of the central section of the reagent pot. It can be seen that the upper area of the reagent pot is a closed space with corresponding insulation cotton, Al6063 inner shell, multiple rotating shafts and reagent tubes, etc. built in. A fan is arranged inside the reagent pot, which pumps up the internal air to flow, so that the cold air (TEC cooling) in the lower part flows upward, which further leads to the uniform temperature of the entire reagent pot; the lower part is a heat dissipation control device, and the original heat dissipation control device includes TEC , 2 parallel fans, a fork-fin radiator and a guide air duct made of sheet metal. The external ambient temperature of the reagent pot is 30°C.

  
  

  
  

  

  
  

  
  

  
  

  
  

  
  

  
  

  
  

  
  

  
  

  
  

  
  

  
  

  Model building and calculation conditions
  

  According to the configuration of the reagent pot provided by the customer, considering the actual geometric structure and the requirements of the thermal simulation model, the screws, nuts, mounting holes, etc. in the structure are omitted. Through simulation analysis, the flow field and temperature field of the system are analyzed, and the heat dissipation effect of TEC on the thermal control of the reagent pot is simulated. The simulation results are as follows:

  
  

  
  

  
  

  

  

  
  

  
     

     The temperature vector animation of the X-section                                                             

  

     Velocity vector animation of X-section
  

  

  
  

  
  

  It can be seen from the simulation results that by 2700s, the air temperature in the reagent pot has dropped by about 21°C, which is close to the requirement of cooling down to 8°C; the cold surface of the TEC conducts part of the cold energy to the solid device at the lower part of the tray; Then, until 2950s, the temperature in the reagent pot further decreased, and the temperature of the air in the pot dropped to 8°C; as of 3600s, the temperature of the air in the pot further dropped to about 5°C.