Supplier of constant temperature and humidity test chamber

Product Introduction:Humidity ChamberUsed for analyzing and evaluating the performance and behavior of aviation, aerospace, electronics, instrumentation, electrical products, materials, components, equipment, etc. under high and low temperature, humidity and heat tests, cold resistance tests, low-temperature storage, and constant temperature and humidity test chambers under specified environmental conditions.

structural process
1.Sheet metal machining equipment. Using one imported German laser machine and one AMADA CNC bending machine; Multiple carbon oxide welding machines and argon arc welding machines. Autodesk Inventor 3D drawing software is used for 3D sheet metal disassembly and virtual assembly design.
2. The shell is made of high-quality galvanized steel plate and coated with electrostatic powder coating paint.
3. The inner box is made of imported SUS-304S stainless steel brushed plate and fully welded with argon arc welding process to prevent leakage and penetration of high temperature and high humidity air inside the box; The rounded corner design of the inner container allows for better drainage of condensed water from the side walls.

1. Adopting a design of upper air outlet and lower return air circulation to better ensure temperature uniformity in the testing area.
2. There is a pressure groove at the bottom of the test box, which facilitates the discharge of condensed water during wet and hot processes. The inner chamber of the box adopts a circular arc design, which can better maintain hygiene and cleanliness.
3. Standard power on test holes and a dedicated power on test cork are standard.

Refrigeration series process
1. Standardize the refrigeration system of the entire machine by charging nitrogen and maintaining pressure for 24 hours to ensure that there are no leaks in the refrigeration system.
2. Standardization of high-quality steel pipe piping technology and welding; According to the standard piping layout, ensure the stability and reliability of the refrigeration system in the test chamber.
3. Imported Italian pipe bending machine bends the entire copper pipe, greatly reducing the operating resistance of the refrigeration system and providing stable pressure operation of the refrigeration system.

Seismic resistance and support of pipelines
1. Shanghai Qingsheng has strict requirements for the support and shock resistance of refrigeration copper pipelines. It fully considers the shock resistance of pipelines and adds circular bends to the refrigeration pipelines, using specialized nylon fixing clamps to avoid pipeline deformation and leakage caused by circular vibration and temperature changes, and improve the reliability of the entire refrigeration system.
2. High quality oxygen free copper pipes and nitrogen filled welding are used for low-temperature pipelines (traditional methods use ordinary copper pipes, and direct welding can easily cause oxides to form on the inner wall of the copper pipes, resulting in blockage of the refrigeration system and slow cooling of the test chamber).
3. We also use imported components for other auxiliary parts in the refrigeration system of this test chamber, such as solenoid valves, filters, etc; If using Italian CASTEL solenoid valves, bypass valves, check valves, etc., other accessories are also made of high-quality domestic refrigeration accessories.
4. The bottom of the refrigeration compressor unit is equipped with a condensate drain pan, which is discharged outside the box.

Control circuit technology
1. The distribution layout operation is based on the distribution assembly diagram issued by the technical department, and international high-quality brands such as Omron, Schneider, and German Phoenix terminal blocks are selected for the installation of electrical components, with clear identification of wire codes.
Select high-quality domestic brands (Shanghai Qifan Cable) to ensure wire quality; The minimum size for the control circuit is 0.75 square RV soft copper wire, and all major loads such as motors and compressors are selected with recessed diameter according to the EC trunking wiring safety current standard! The cable ports of the compressor machine wire box are treated with sealant to prevent frost from causing short circuits in the terminals inside the junction box.
All terminal fixing screws are connected to standard fixing torque to ensure reliable fastening and prevent potential hazards such as loosening and sparking!

Refrigeration System Technology
Shanghai Qingsheng adopts cutting-edge temperature balance technology (single-stage automatic cascade system) in the industry. By using two different refrigerants with different evaporation temperatures and changing the cooling effect of the refrigerants through electromagnetic valves, the ideal low temperature for single-stage automatic cascade refrigeration can be achieved, truly realizing the refrigeration of a single compressor.
Compared to the previous method of using two-stage cascade refrigeration for temperatures below -35 ℃, which used two-stage cascade refrigeration, the energy consumption is very high and the noise from the two compressors is also high. The application of this technology can minimize customers' operating costs and extend the lifespan of compressors to the greatest extent possible, saving electricity costs throughout the equipment lifecycle.
Adopting compressor rubber pads and spring vibration reduction measures; The refrigeration system pipeline adopts the method of adding R and elbows to avoid the deformation of copper pipes caused by vibration and temperature changes, which may cause the refrigeration system pipeline to rupture.

Refrigeration system technology and other energy-saving technologies

A) VRF technology based on PID+PWM principle (electronic expansion valve controls cold flow rate according to thermal energy conditions)
VRF technology (refrigerant flow control) based on PID++PWM principle is used to achieve low-temperature energy-saving operation (electronic expansion based on which operating condition cold flow servo control technology is used); In the low-temperature working state, the heater does not participate in the operation. The flow rate and direction of the refrigerant are adjusted through PID+PWM, and the three-way flow rate of the refrigeration pipeline, cold side pipeline, and hot side pipeline is regulated to achieve automatic constant temperature during operation. This method can achieve automatic constant temperature of the working room under low-temperature conditions, and can reduce energy consumption by 30% under low-temperature conditions. This technology is based on the ETS system electronic expansion valve of Danish company Danfoss, which can be used to adjust the refrigeration for different cooling capacity requirements, and can achieve compressor cooling capacity adjustment at different cooling rate requirements.
B) Design technology for grouping 2 sets of compressors of different sizes, automatically starting and stopping according to load conditions (large series is designed)
The refrigeration unit is equipped with a binary cascade refrigeration system consisting of one semi enclosed compressor and one fully enclosed single-stage refrigeration system. Configure the mother; According to the load conditions and cooling rate requirements inside the box, different compressor units are intelligently turned on to achieve the best match between the cooling capacity conditions inside the box and the output power of the compressor, thereby achieving a circular shape of the compressor in the optimal operating range to extend its service life. More importantly, compared to traditional designs, the energy-saving effect is very obvious, which can achieve over 30% constant temperature and short control time. Cooperate with VRF technology)

Specifications:

Pre sales/in sales/after-sales service:

Product Warranty and After sales Service

All environmental test chambers sold by Shanghai Qingsheng Test Instrument Equipment Co., Ltd. (hereinafter referred to as "Shanghai Qingsheng") meet the requirements of the contract and the relevant national or international standards implemented in the contract. If there are any quality issues, our company will focus on safeguarding customer rights and take necessary remedial measures.

What Shanghai Qingsheng pursues is an efficient and high-quality service that respects the protection of the rights and interests of both buyers and sellers. Customers who purchase Shanghai Qingsheng's test chambers can enjoy a one-year quality warranty and lifetime after-sales service protection. The responsibilities of both buyers and sellers are clearly defined, as detailed in the following rules:

1、 Usage Regulations:

This warranty service is only applicable to the original purchaser or their subsidiary. The original purchaser shall provide the purchase contract or test box warranty card as proof. Our company is committed to maintaining the warranty validity period of the contract and this warranty card, adhering to efficient service commitments, and providing timely and professional services.

2、 Warranty Regulations:

Shanghai Qingsheng provides quality warranty in the manufacturing of testing equipment and test chambers, responsible for repairing damaged parts of replaceable original test chambers. Customers should keep the damaged parts of the product and its accessories.

3、 Applicable regulations:

If the equipment sold by the seller is damaged due to quality issues, the seller is responsible for repairing or replacing it (excluding non-standard customized test boxes), and bears the resulting costs such as shipping, installation, and travel expenses.

For example: high and low temperature test chamberHumidity ChamberIf the test chamber does not heat up or cool down and there are electrical problems caused by quality issues with the testing equipment, the seller shall bear the responsibility and provide free maintenance services.

4、 Non applicable regulations:

*Damage caused by natural disasters such as typhoons, floods, and earthquakes;

*Due to improper use or human damage, such as severe collisions, incorrect operation of the test chamber, excessive placement of products in the test chamber, and poor air circulation, services must be charged at discretion before being provided;

*Non company transportation and installation or non company after-sales maintenance, replacement of replacement parts that do not match our company, resulting in damage or relocation of the test chamber beyond the same city without repair;

*Shanghai Qingsheng Company shall not be held responsible for any indirect losses incurred by the purchaser due to damage to the goods or failure to maintain the test chamber according to the prescribed time.

pre-sales service

Shanghai Qingsheng Company will provide professional laboratory renderings and beautifully crafted product configuration plans, detailing the model, specifications, power, and accessory specifications of the test box for the product project, and providing a quotation for the test box

On site observation and feedback from container inspection usersSmall high and low temperature test chamberWe provide temporary borrowing or leasing services to help you plan the layout of laboratory equipment.

in-sales service

A customer service center for test chambers composed of professional engineers follows up and provides installation training to ensure the transportation, installation, and commissioning services of test chambers.

After-sales service

Main functions: on-site engineer service, product return to factory repair service, product spare parts replacement and supply service.

After receiving maintenance requests from customers, Shanghai Qingsheng Customer Service Center will provide a response within 2 hours;

After receiving maintenance requests from customers within the province, Shanghai Qingsheng Customer Service Center will send personnel to provide maintenance within 12 working days;

After receiving maintenance requests from customers outside the province, Shanghai Qingsheng Customer Service Center will send personnel to provide maintenance within 24 working days;

After you became a customer of Shanghai Qingsheng Company, our commitment to you did not terminate as a result.

The Shanghai Qingsheng Customer Service Center is dedicated to handling customer inquiries, complaints, maintenance, emergency services, and even friendly visits, striving to solve all customer needs;

During the warranty period, if there is any performance damage to the product, our company will be responsible for taking necessary remedial measures to meet the needs of customers and safeguard their consumer rights.

Outside the warranty period, if there is any performance damage or difficult problems with the environmental testing chamber:

Shanghai Qingsheng Instrument will provide lifelong tracking service. If there is any malfunction or problem with the environmental test chamber you purchased outside the warranty period, you can call our customer service center and enjoy free technical support; If the malfunction is severe, on-site service explanation is required, and only the travel expenses and basic cost of parts to and from your company need to be borne.