The greenhouse is able to make long-term changes before high temperature and low temperature. It is often used to determine whether physical damage or performance damage occurs when equipment is exposed to extreme changes in temperature. It is an important test tool for aircraft, automobiles, home appliances and scientific research. Check and determine the parameters and performance of complete machines and parts of test equipment, machines, electrical equipment and electronic products after high and low test tests, suitable for exposure to aircraft, air travel – exposure to the desert and land it is air – cold exposure.
The design of the shock test room generally has the following three types:
- Three boxes
First, three caissons of the thermal shock chamber. Three types of boxes have a test area, a high temperature area, a low temperature area, a cold cabinet and a control room. The three-box system requires a lot of cooling and heating.
- Lift up
Second, thermal shock chamber vertical lift type. Vertical lift type consists of upper temperature zone, lower temperature zone, nacelle, cooling cabinet and control cabinet. Because it is thanks to the elevator basket. Therefore, it is a question of avoiding the impact of the environment. However, due to the vertical installation in the high and low areas, if the test space is large, the high number of test boxes is high. Therefore, it will make the work not good. Therefore, this method is usually suitable for small laboratories.
- Horizontal Mobile
Third, horizontal type of thermal shock building. The vertical transport type includes high temperature zone, low temperature zone, removable basket, cold cabinet and control cabinet, and it is installed in line with high temperature zone and low temperature zone, and it is suitable for large box research.
Among them, vertical lifting type and horizontal moving type two box type thermal shock building. First, the selection of test methods will be classified according to different conditions. The most cost-effective test equipment is selected based on the assurance that test standards are met.
Characteristics of thermal shock chambers
When understanding the difference between the three types of heat shock room. Next, we mainly introduce the structural features of the vertical lift thermal shock chamber.
Thermal Shock Cabinet
The cabinet is made of powder-coated galvanized steel, which is beautiful and elegant.
To the right is the control cabinet and to the rear is the refrigeration cabinet. There are two upper and lower entrances in front, which are the upper test area and the lower test area.
The insulation material is polyurethane foam + ultra-fine glass wool, which has good heat insulation properties. Below is a channel steel system that has good performance.
To facilitate the movement and management of equipment, the foundation is supported by screws and legs.
The high temperature of the fire house
The high temperature sensor is located at the top of the tank. Because the high temperature can change the shape of the body or part of the material used. Therefore, the materials used in high temperature tanks must meet the requirements for use in high temperature environments. It is made of 1.0mm SUS #304 stainless steel with high heat resistance and low temperature, which is beautiful and durable.
In front of the high temperature tank is a high temperature test area for use in high temperature tests or heat shock tests.
Behind the high temperature tank is an air distribution line that contains an air distributor, a heater and a heater. Air is heated and air is distributed to the front test area for cycling tests.
When the test sample is tested in the low temperature zone, the high temperature tank is in the temperature storage mode. And when the sample is moved from the low temperature area, the high temperature test conditions can be restored in a short time.
Small heat tank of the thermal shock chamber
The lower temperature is at the bottom of the tank. Because low temperature has a negative effect on almost all matrix materials. Therefore, the materials used in low temperature tanks must meet the requirements for use in low temperature conditions. It is made of SUS #304 stainless steel 1.0mm which is high and low resistance, beautiful and durable.
In front of the lower tank is a lower check point for use in low test or low shock tests.
Behind the lower tank is the circulation channel, which contains the circulation machine, the turbine, the heater, the heater and the recycler. When the air absorbs heat from the evaporator, it reaches the minimum temperature required by the test, and the air in the test area and the air are mixed together, the cycle test is carried out.
When the test sample is tested in the high temperature area, the lower temperature of the tank is in the cold storage condition. And when the sample is moved from the high temperature area, the lower test conditions can be restored in a short time.
The Basket of thermal shock chamber
There are two check boxes in the basket.
The level of the sample holder can be adjusted up and down. Besides, the bracket is made of SUS #304 stainless steel square tubes.
At the top and bottom is a sealed plate, which acts to seal the high temperature zone and the low temperature zone. The cover piece has a silicone band. In addition, it does not move under high and low temperature conditions, and the water performance is not good.
The movement of the basket in the high and low temperature zones is controlled by the jack. The cooperation of the cylinder, the wire rope and the roller makes it possible to pull the basket to perform the thermal shock test, thus avoiding the weakness of the stroke of the classic motor and the deformation of the casing.
When the basket moves to a high temperature test area, the friction between the bottom of the gondola and the high and low temperature areas turns the pulling force of the cylinder into a cover function.
When the basket goes to the lower test area, the person who separates between the upper part and the higher and lower area turns on himself of the suspension basket to work as a cover function. The quality of the chat cover directly affects the performance of the test.
Summary
As we know, the use of thermal shock building is becoming everywhere. Choosing the right test equipment has a direct impact on test accuracy. This article focuses on the lifting model of the thermal shock test chamber.
It has the ability to stabilize the test condition in another test room within 5 minutes of turning the sample. It is worth mentioning that the sample transfer time from one studio to another is less than 10S, which exceeds the requirements of the test standard.
Therefore, the high-lift model of the two-box laboratory has a fast turnaround time and a low test cost. It is the best choice for temperature testing of small test samples.
