Automobile interior trim part and material pretreatment cabin

Abstract

The utility model relates to an automotive upholstery and material pretreatment cabin. Comprising a cabin body, a cabin door mounted on one side of the cabin body, partition plates arranged in the cabin body and used for dividing a plurality of treatment chambers, a temperature and humidity control device mounted in the cabin body and used for adjusting the indoor temperature and humidity, a flame ionization detector connected with the cabin body and used for detecting the concentration of volatile organic compounds, and sample racks placed at the positions of the treatment chambers, the temperature and humidity control device comprises a refrigerator, a heater, a humidifier, a ventilation device and a temperature and humidity sensor, an air inlet of the ventilation device is formed in the upper portion of the cabin body, and an air outlet of the ventilation device is formed in the lower portion of the cabin body; the flame ionization detector is installed at the position close to the cabin body, a sampling pipe of the flame ionization detector extends into the cabin body, and the flame ionization detector collects air in the cabin body through the sampling pipe and monitors the total hydrocarbon content in real time; the utility model has the advantage of solving the problems of long background concentration detection period and tedious process of the existing pretreatment cabin.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile interior decoration part pretreatment, in particular to an automobile interior decoration part and a material pretreatment cabin. Background Art

[0002] Automotive interior components and materials typically require pre-treatment under constant temperature and humidity conditions during testing. Currently, European and American OEMs typically pre-treat unpackaged samples under constant temperature and humidity conditions. Domestic OEMs typically pre-treat samples packaged under constant temperature and humidity conditions.

[0003] For emissions testing of automotive interior parts and materials, such as those for volatile organic compounds (VOCs), formaldehyde, total carbon, and odor, if all samples are placed in a preconditioning chamber, there is a risk of cross-contamination due to the continued emission of VOCs and other pollutants from the samples into the air. Some domestic OEMs advocate preconditioning the samples while they are still packaged, i.e., maintaining constant temperature and humidity. However, preconditioning with packaging fails to regulate sample humidity, which significantly impacts subsequent emissions testing results, such as VOCs. Consequently, significant seasonal variations in test results often occur for batches of samples tested in different seasons. This is due to the significant seasonal variations in ambient humidity, which prevents proper humidity control during preconditioning. Furthermore, each OEM has requirements for background pollutant concentrations in emissions testing to ensure that the measured values reflect the concentration of pollutants emitted by the sample itself. Typically, air samples are taken from various test areas and equipment, and then measured for background pollutant concentrations using analytical instruments such as gas chromatography-mass spectrometry (GCMS) and high-performance liquid chromatography (HPLC). This method requires a long testing cycle and only periodic sampling, not real-time monitoring of background pollutants.

[0004] In the prior art, a pretreatment chamber is used to provide constant temperature and humidity for sample processing. Chinese patent CN212514486U, a multi-chamber pretreatment environmental chamber, is used for plate pretreatment. Multiple chambers and a buffer chamber are arranged in the same jacket, and the humidity is uniformly controlled. Air is supplied to each chamber separately through a flow meter, and the switches are independent and do not affect each other. The risk of cross-contamination during the pretreatment process is reduced because the size and volume of the sample for plate pretreatment are regular and fixed, meeting the requirements of plate pretreatment. However, the types of automotive interior parts and materials are complicated, and the size and volume are uncertain. When applied to automotive interior parts products, they cannot be flexibly processed according to the size of the samples. And the concentration of pollutants during the pretreatment process cannot be monitored in real time. CN209198165U is a combined pretreatment environmental chamber. It combines a sampling constant temperature chamber, a working chamber and an equipment chamber, and has low cost, but only controls the temperature in the cabin, and has no control over the air humidity and pollutants in the cabin. Utility Model Content

[0005] In view of the above problems, the purpose of this utility model is to provide an automotive interior parts and material pretreatment chamber to solve the cross-contamination problems that may exist in the pretreatment chamber treatment and the problem of not being able to monitor the background pollutant concentration in real time, so as to overcome the shortcomings of the above-mentioned existing technology.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A pretreatment chamber for automotive interior parts and materials, comprising: a chamber body, a chamber door mounted on one side of the chamber body, a partition disposed within the chamber body for partitioning the chamber body into a plurality of treatment chambers, a temperature and humidity control device mounted within the chamber body for adjusting the indoor temperature and humidity, a flame ionization (FID) detector connected to the chamber body for detecting the concentration of volatile organic compounds, and a sample rack positioned at the treatment chamber location;

[0008] The hatch covers the entire side of the cabin and is opened in a double-door manner;

[0009] Wherein, a plurality of said partitions are vertically erected in the cabin, said partitions are in the shape of foldable plates, and the height of said partitions is the same as the height of the sample rack;

[0010] Wherein, the temperature and humidity control device includes: a refrigerator for cooling the cabin, a heater for heating the cabin, a humidifier for adjusting the humidity in the cabin, a ventilation device and a temperature and humidity sensor; the temperature and humidity control device monitors the overall temperature and humidity in the cabin through the temperature and humidity sensor; the temperature and humidity control device controls the refrigerator and the heater to adjust the temperature in the cabin according to the specific temperature of the temperature and humidity sensor; the temperature and humidity control device controls the humidifier to adjust the humidity in the cabin according to the specific humidity of the temperature and humidity sensor; the ventilation device is used to replace the air in the cabin; the air inlet of the ventilation device is arranged above the cabin, and the air outlet of the ventilation device is arranged below the cabin;

[0011] The flame ionization detector is installed near the cabin, and the sampling tube of the flame ionization detector extends into the cabin. The flame ionization detector collects air inside the cabin through the sampling tube and monitors the total hydrocarbon content in real time. When the total hydrocarbon content is higher than the set value, the ventilation device is started to replace the air.

[0012] As a preferred embodiment of the present invention, the cabin is a rectangular parallelepiped, and the inner wall of the cabin is made of mirror-finished stainless steel.

[0013] As a preferred embodiment of the present invention, the sampling tube extends into the cabin and is connected to a metal sampling tube inside the cabin, and the sampling position is adjusted through the metal sampling tube.

[0014] As a preferred embodiment of the present invention, universal wheels are provided at the bottom of the partition, and the partition moves in the cabin through the universal wheels at the bottom.

[0015] As a preferred embodiment of the present invention, the partition is composed of a support frame and a sealing surface provided on the support frame, and the support frame is folded along a frame folding line.

[0016] As a preferred embodiment of the present invention, the sample rack is a multi-layer vertical rack, and a plurality of ventilation holes are provided on the surface of each layer of the vertical rack.

[0017] The advantages and positive effects of this utility model include: partitions separating the interior of the pretreatment chamber, with movable partitions providing greater flexibility and convenience depending on the volume of the sample. The upward air supply and downward exhaust function of the temperature and humidity control system significantly reduces the risk of cross-contamination of samples within the chamber. The composite FID detection system monitors the total hydrocarbon content in the pretreatment chamber in real time, with high test accuracy, enabling timely determination of whether the VOC pollutant concentration within the pretreatment chamber meets requirements, resolving the long and cumbersome process associated with existing pretreatment chamber background concentration detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0019] Figure 2 It is the FID curve diagram of the pretreatment chamber in the utility model.

[0020] Figure 3 It is the FID curve diagram of the processing chamber in the prior art.

[0021] Reference numerals: cabin 1 , cabin door 2 , partition 3 , temperature and humidity control device 4 , flame ionization detector 5 , sample rack 6 . DETAILED DESCRIPTION

[0022] See Figure 1This embodiment provides a pretreatment chamber for automotive interior parts and materials, comprising: a chamber 1, a door 2 installed on one side of the chamber 1, a partition 3 provided inside the chamber 1 for partitioning the chamber 1 into a plurality of treatment chambers, a temperature and humidity control device 4 installed in the chamber 1 for adjusting the indoor temperature and humidity, a flame ionization (FID) detector 5 connected to the chamber 1 for detecting the concentration of volatile organic compounds, and a sample rack 6 placed at the position of the treatment chamber; the chamber 1 is a rectangular parallelepiped, the inner wall of the chamber 1 is made of mirror-finished stainless steel, and the door 2 covers the chamber 1. The entire side of the cabin 1 and the cabin door 2 are opened in a double-door manner; multiple partitions 3 are vertically erected in the cabin 1, and the partitions 3 are foldable folding plates, and the height of the partitions 3 is the same as the height of the sample rack 6; the partitions 3 are composed of a support frame and a sealing surface provided on the support frame, and the support frame is folded along the frame folding line. The bottom of the partition 3 is provided with a universal wheel, and the partition 3 moves in the cabin 1 through the universal wheel at the bottom; the temperature and humidity control device 4 includes: a refrigerator for cooling the cabin, a heater for heating the cabin, and a A humidifier, ventilation device and temperature and humidity sensor are used to adjust the humidity in the cabin. The temperature and humidity control device monitors the overall temperature and humidity in the cabin through the temperature and humidity sensor. The temperature and humidity control device controls the refrigerator and heater to adjust the temperature in the cabin according to the specific temperature of the temperature and humidity sensor. The temperature and humidity control device controls the humidifier to adjust the humidity in the cabin according to the specific humidity of the temperature and humidity sensor. The ventilation device is used to replace the air in the cabin. The air inlet of the ventilation device is set above the cabin, and the air outlet of the ventilation device is set below the cabin; the flame ionization detector 5 is installed at a position close to the cabin 1, and the sampling tube of the flame ionization detector 5 extends into the cabin. The flame ionization detector 5 collects the air inside the cabin 1 through the sampling tube and monitors the total hydrocarbon content in real time. When the total hydrocarbon content is higher than the set value, the ventilation device is started to replace the air. The sampling tube extends into the cabin 1 and is connected to the metal sampling tube inside the cabin 1. The sampling position is adjusted through the metal sampling tube. The sample rack 6 is a multi-layer vertical rack, and each layer of the vertical rack table is provided with multiple ventilation holes.

[0023] A main control cabinet is also provided in this embodiment, which includes: a refrigerator control module electrically connected to the refrigerator, a heater control module electrically connected to the heater, a humidifier control module electrically connected to the humidifier, a ventilation device control module electrically connected to the ventilation device, a temperature and humidity sensor control module electrically connected to the temperature and humidity sensor, and a flame ionization detector control module electrically connected to the flame ionization detector.

[0024] Working Principle: When multiple samples are pre-processed, partitions are used to separate the areas and the samples are placed on shelves. The temperature and humidity control system supplies air from the top of the compartment and exhausts air from the bottom, maintaining a constant temperature and humidity. The flame ionization detector (FID) 5 monitors the background contaminants in the compartment in real time. If the FID 5 detects excessive background contaminants, the temperature and humidity control system 4 adjusts the air supply and exhaust volume to prevent cross-contamination of the samples in the compartment.

[0025] See Figure 2 and Figure 3 In this embodiment, two real-time monitoring tests of the FID data in the treatment chamber are performed. It can be seen that the total hydrocarbon content in the chamber in the two tests is at a very low level, both below 5 ppm, thus meeting the requirements of the background environment for pollutants in the chamber.

[0026] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An automotive interior parts and material pretreatment chamber, characterized in that: include: A cabin, a cabin door installed on one side of the cabin, a partition installed inside the cabin for dividing the cabin into multiple processing chambers, a temperature and humidity control device installed in the cabin for adjusting the indoor temperature and humidity, a flame ionization detector connected to the cabin for detecting the concentration of volatile organic compounds, and a sample rack placed at the processing chamber position; The hatch covers the entire side of the cabin and is opened in a double-door manner; Wherein, a plurality of said partitions are vertically erected in the cabin, said partitions are in the shape of foldable plates, and the height of said partitions is the same as the height of the sample rack; Wherein, the temperature and humidity control device includes: a refrigerator for cooling the cabin, a heater for heating the cabin, a humidifier for adjusting the humidity in the cabin, a ventilation device and a temperature and humidity sensor; the temperature and humidity control device monitors the overall temperature and humidity in the cabin through the temperature and humidity sensor; the temperature and humidity control device controls the refrigerator and the heater to adjust the temperature in the cabin according to the specific temperature of the temperature and humidity sensor; the temperature and humidity control device controls the humidifier to adjust the humidity in the cabin according to the specific humidity of the temperature and humidity sensor; the ventilation device is used to replace the air in the cabin; the air inlet of the ventilation device is arranged above the cabin, and the air outlet of the ventilation device is arranged below the cabin; The flame ionization detector is installed near the cabin, and the sampling tube of the flame ionization detector extends into the cabin. The flame ionization detector collects air inside the cabin through the sampling tube and monitors the total hydrocarbon content in real time. When the total hydrocarbon content is higher than the set value, the ventilation device is started to replace the air.

2. The automotive interior parts and material pretreatment chamber according to claim 1, characterized in that: The cabin is a rectangular parallelepiped, and the inner wall of the cabin is made of mirror-finished stainless steel.

3. The automotive interior parts and material pretreatment chamber according to claim 1, characterized in that: The sampling tube extends into the cabin and is connected to a metal sampling tube inside the cabin, and the sampling position is adjusted through the metal sampling tube.

4. The automotive interior parts and material pretreatment chamber according to claim 1, characterized in that: Universal wheels are provided at the bottom of the partition, and the partition moves in the cabin through the universal wheels at the bottom.

5. The automotive interior parts and material pretreatment chamber according to claim 1, characterized in that: The partition is composed of a support frame and a sealing surface arranged on the support frame, and the support frame is folded along a frame folding line.

6. The automotive interior parts and material pretreatment chamber according to claim 1, characterized in that: The sample rack is a multi-layer vertical rack, and a plurality of ventilation holes are provided on the surface of each layer of the vertical rack.

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