A water-cooled temperature-controlled environmental test chamber

Abstract

The present invention provides a water-cooled temperature-controlled environmental test chamber, comprising an inner box, an outer box, an isolation wall, a sealed door, a sampling port, a temperature control system and a water circulation loop, wherein the isolation wall is movably arranged in the inner box, and the isolation wall isolates the internal space of the inner box into a test space and a deployment space that are isolated from each other, and the test space is used for sample testing, and a movable isolation wall is arranged inside the inner box, so that the size of the test space can be conveniently adjusted to adapt to the test requirements of test samples of different sizes, thereby improving the versatility of the environmental test chamber and saving purchase costs and installation space; the medium water in the water circulation loop exchanges heat with the wall panel of the inner box on the outside of the inner box, so as to control the temperature of the test space inside the inner box to be maintained within the detection standard range, without affecting the gas environment in the box, and improving the detection accuracy.

Description

Technical Field

[0001] The invention relates to an environmental test chamber, in particular to a water-cooled temperature-controlled environmental test chamber. Background Art

[0002] With the development of my country's economy and the improvement of people's living standards, the demand for all kinds of furniture has increased rapidly. The manufacturing process of modern furniture also causes furniture to volatilize a large amount of formaldehyde and other harmful substances. If these harmful substances are released in excess, they will cause great pollution to the indoor air and seriously endanger the health of users.

[0003] In order to ensure people's health, the state has formulated the national standard GB / T35607 for furniture green product evaluation, in which the formaldehyde and VOC detection in furniture adopts the climate chamber method. When selecting the specifications of the climate chamber, the volume load rate of the climate chamber should meet the range of (0.075~0.3), and the appropriate climate chamber should be selected according to the principle of volume load rate close to 0.15. For furniture of different sizes, if it is selected according to the above volume load rate requirements, it is necessary to configure climate chambers with various volume spaces, which takes up a lot of space and requires a high purchase cost. In addition, there are also requirements for the temperature in the cabin in the national testing standards. If ordinary air conditioning is installed in the cabin for temperature control, the air conditioning itself may volatilize the harmful gases to be measured, which will affect the test results. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies of the prior art, an object of the present invention is to provide a water-cooled temperature-controlled environmental test chamber.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention to solve the technical problem is: a water-cooled temperature-controlled environmental test chamber, comprising:

[0006] An inner box, which is formed by splicing a plurality of wall panel units;

[0007] An outer box, which is located outside the inner box;

[0008] A partition wall is movably disposed in the inner box, and the partition wall separates the inner space of the inner box into a test space and a preparation space that are isolated from each other, and the test space is used for sample testing;

[0009] A sealed door, which is installed on a side wall of the inner box and is used to enter the test space from the outside of the outer box;

[0010] A fan unit, which is installed at one end of the inner box and is used to form air flow in the test space;

[0011] A sampling port, which is installed on the inner box and is used to extract gas samples in the test space;

[0012] A temperature control system is arranged outside the outer box, and the temperature control system includes a compressor, a heat exchanger, a throttle valve and a condenser connected in series;

[0013] A water circulation loop comprises a circulation pump, a first water spray pipe, a second water spray pipe, a water collecting tank and a connecting water path, wherein the first water spray pipe is installed above the front side of the inner box top wall plate, the front side of the inner box top wall plate is slightly higher than the rear side of the top wall plate, and the first water spray pipe is provided with a plurality of water spray outlets facing the upper surface of the inner box top wall plate; the second water spray pipe is installed behind the upper part of the inner box rear wall plate, and the second water spray pipe is provided with a plurality of water spray outlets facing the outer surface of the inner box rear wall plate; the water collecting tank is installed at the bottom of the inner box rear wall plate; water is pumped out to the water path in the heat exchanger through the circulation pump, and then sprayed out from the first water spray pipe and the second water spray pipe, and the water converging into the water collecting tank is then sucked into the circulation pump to form a water circulation.

[0014] By adopting the technical solution of the present invention, a movable isolation wall is arranged inside the inner box, which facilitates the adjustment of the size of the test space to adapt to the test requirements of test samples of different sizes, thereby improving the versatility of the environmental test chamber and saving purchase cost and installation space; the medium water in the water circulation loop exchanges heat with the wall panel of the inner box on the outside of the inner box, thereby achieving the control of the temperature of the test space inside the inner box to be maintained within the detection standard range, without affecting the gas environment in the box, and improving the detection accuracy.

[0015] Furthermore, a water retaining plate is provided on the outer side of the top of the rear wall plate of the inner box.

[0016] By adopting the above preferred solution, the water sprayed from the top wall plate and the second water spray pipe can be effectively regulated and converged into the water collection tank below along the rear wall plate.

[0017] Furthermore, an infrared sensor for detecting the moving position of the partition wall is provided in the deployment space of the inner box, the length directions of the first water spray pipe and the second water spray pipe are arranged parallel to the moving direction of the partition wall, a first water inlet close to the inner box test space and a second water inlet close to the inner box deployment space are respectively provided at both ends of the first water spray pipe, and a first flow control valve for controlling the water flow entering the first water inlet and the second water inlet is also provided on the connecting water path, the water flow entering the first water inlet is greater than the water flow entering the second water inlet, a plurality of stop valves distributed at intervals are provided on the first water spray pipe, and the first water spray pipe is provided with a plurality of stop valves distributed at intervals. The stop valve closest to the wall is in a closed state, and the other stop valves on the first water spray pipe are in an open state; a third water inlet close to the inner box test space and a fourth water inlet close to the inner box preparation space are respectively provided at both ends of the second water spray pipe, and a second flow control valve for controlling the water flow entering the third water inlet and the fourth water inlet is also provided on the connecting water path. The water flow entering the third water inlet is greater than the water flow entering the fourth water inlet. A plurality of stop valves distributed at intervals are provided on the second water spray pipe, the stop valve on the second water spray pipe closest to the isolation wall is in a closed state, and the other stop valves on the second water spray pipe are in an open state.

[0018] By adopting the above preferred solution, the area matching the test space can be controlled to maintain a large water flow according to the position of the isolation wall, thereby improving the temperature control ability of the test space and achieving energy saving.

[0019] Furthermore, the wall panel unit comprises a plurality of stainless steel plates arranged in parallel and steel bars located at the edges of the stainless steel plates, and copper bars are provided between the steel bars of adjacent wall panel units.

[0020] By adopting the above preferred solution, the inner box is spliced ​​by a plurality of wall panel units, and the wall panel units are composed of a plurality of stainless steel plates and steel bars, which greatly facilitates the disassembly and assembly of the environmental test chamber.

[0021] Furthermore, the steel bar includes a main bar body and a right-angled side extending from the main bar body to one side, the stainless steel plate is fixed on the right-angled side, and the main bar body is provided with a countersunk hole for installing a fastening bolt.

[0022] By adopting the above preferred solution, the position of the stainless steel plate can be easily fixed, and the splicing of adjacent wall panel units is more convenient.

[0023] Furthermore, the steel bars of the wall panel unit include two parallel long steel bars and short steel bars connected to both ends of the long steel bars, a plurality of stainless steel plates are arranged in parallel along the long steel bars, and reinforcing flat tubes are provided on the surfaces of the joints of adjacent stainless steel plates.

[0024] By adopting the above preferred solution, multiple stainless steel plates are connected into one by two integral long steel bars, which can improve the structural stability of the wall panel unit. The reinforced flat tubes not only strengthen the sealing of the joints of adjacent stainless steel plates, but also improve the structural strength.

[0025] Furthermore, the isolation wall includes a main sealing plate, a first round-shaped sealing strip and a second round-shaped sealing strip, and the first round-shaped sealing strip and the second round-shaped sealing strip are respectively arranged on two side surfaces of the surrounding parts of the main sealing plate.

[0026] By adopting the above-mentioned preferred solution, the sealing performance of the isolation wall is improved, ensuring that the gas in the test space does not flow into the preparation space, thereby improving the accuracy of the test results.

[0027] Furthermore, it also includes a mobile driving mechanism for driving the movement of the isolation wall, the mobile driving mechanism includes a front long rack, a rear long rack, a left front gear, a right front gear, a left rear gear, a right rear gear, a transmission shaft, a sprocket chain transmission mechanism and a driving motor, the front long rack and the rear long rack are respectively installed on the front and rear sides of the inner box bottom plate, the left front gear, the right front gear, the left rear gear and the right rear gear are all installed on the main cover plate of the isolation wall via bearings and bearing seats, the left front gear and the right front gear are meshed with the front long rack, the left rear gear and the right rear gear are meshed with the rear long rack, and the driving motor drives the right front gear and the right rear gear to rotate synchronously via the sprocket chain transmission mechanism and the transmission shaft.

[0028] Furthermore, it also includes a supporting mechanism for supporting the isolation wall, the supporting mechanism includes four oblique support rods and four groups of roller assemblies respectively distributed in the left front, right front, left rear and right rear directions of the isolation wall, the upper and middle parts of the oblique support rods are respectively fixedly mounted on the main cover plate of the isolation wall, the bottom of the oblique support rods is provided with a support rod base, the roller assembly includes a roller and a roller seat, the roller is rotatably mounted on the roller seat, the roller is a cylindrical roller with a horizontal axis, the axis of the roller is perpendicular to the length direction of the front long rack, the roller seat is provided with a vertically arranged guide shaft, the support rod base is provided with a guide sleeve matching the guide shaft, a compression spring is provided between the support rod base and the roller seat, a limit screw is passed through the center of the compression spring, and the limit screw passes through the through hole on the support rod base and is connected to the roller seat.

[0029] The adoption of the above preferred solution improves the smoothness of movement of the isolation wall.

[0030] Furthermore, a small transition door is provided on the main sealing plate of the isolation wall.

[0031] The above preferred solution makes it convenient to enter the deployment space from the test space for operation and maintenance.

[0032] Furthermore, the first circular sealing strip and the second circular sealing strip are made of Teflon material, and the thickness of the first circular sealing strip and the second circular sealing strip is greater than the tooth spacing of the front long rack.

[0033] With the above preferred solution, the circular sealing strip is made of Teflon material with strong corrosion resistance and outstanding self-lubricating property on the surface, so that the volatile matter of the test sample is not easy to adhere to the surface of the circular sealing strip.

[0034] Furthermore, a long transparent window is provided on the upper part of the inner box along the moving direction of the partition wall, and an image acquisition device and a linear moving mechanism that drives the image acquisition device to move along the transparent window are provided above the outer side of the inner box. The inner box also includes a controller, which is connected to the image acquisition device, the linear moving mechanism and the moving drive mechanism by signal. The controller receives the projection of the sample to be tested acquired by the image acquisition device, calculates the projection area data, and sends a command signal to control the action of the moving drive mechanism.

[0035] By adopting the above preferred solution, the test sample image can be automatically collected to automatically adjust the position of the isolation wall to obtain a test space of a reasonable size.

[0036] Furthermore, the fan unit includes a motor, stainless steel blades, an air guide cover, a motor mounting plate, a guide sleeve and a Teflon gasket. The motor, the motor mounting plate, the guide sleeve and the Teflon gasket are all located on the outside of the inner box. The stainless steel blades and the air guide cover are located on the inside of the inner box. The motor mounting plate is fixed to the outer surface of the stainless steel plate of the inner box wall. A through hole for the motor shaft to pass through is provided on the stainless steel plate on the inner side of the motor mounting plate. The guide sleeve is installed on the motor mounting plate. The motor is installed on the guide sleeve. Teflon gaskets are respectively installed between the joint surfaces of the guide sleeve and the motor mounting plate, and between the joint surfaces of the guide sleeve and the motor. The stainless steel blades are connected to the motor shaft, and the air guide cover is provided on the outer periphery of the stainless steel blades.

[0037] By adopting the above preferred solution, only the stainless steel blades and the air guide cover of the fan unit are inside the inner box, so as to prevent the motor from generating exhaust gas and waste heat to the test space when running. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1It is a structural schematic diagram of an implementation mode of the environmental test chamber of the present invention;

[0040] Figure 2 It is a structural schematic diagram of the hidden outer box of the environmental test chamber of the present invention;

[0041] Figure 3 It is a schematic diagram of the temperature control system and water circulation loop of the present invention;

[0042] Figure 4 is a vertical cross-sectional schematic diagram of the environmental test chamber of the present invention along the length direction;

[0043] Figure 5 is a schematic diagram of a vertical section of the environmental test chamber of the present invention along the width direction;

[0044] Figure 6 is a structural schematic diagram of the wall panel unit;

[0045] Figure 7 It is a schematic diagram of the local structure of the steel bar;

[0046] Figure 8 It is a right structural schematic diagram of the mobile driving mechanism and the supporting mechanism of the isolation wall;

[0047] Fig. 9 It is a left structural schematic diagram of the mobile driving mechanism and the supporting mechanism of the isolation wall;

[0048] Fig.10 It is a schematic diagram of the local structure of the lower part of the oblique support rod;

[0049] Fig.11 It is a structural schematic diagram of the fan unit.

[0050] The numbers and letters in the figure represent the names of the corresponding parts:

[0051] 10-inner box; 101-stainless steel plate; 102-long steel bar; 1021-main bar body; 1022-right angle edge; 1023-countersunk hole; 103-short steel bar; 104-reinforced flat tube; 11-test space; 12-adjustment space; 20-outer box; 30-partition wall; 301-main sealing plate; 302-first round-shaped sealing strip; 303-second round-shaped sealing strip; 31-mobile drive mechanism; 311-front long rack; 312-rear long rack; 313-left front gear; 314-right front gear; 315-left rear gear; 316-right rear gear; 317-transmission shaft; 32-support mechanism; 321 - oblique support rod; 322-support rod base; 323-roller; 324-roller seat; 325-guide shaft; 326-guide sleeve; 327-compression spring; 328-limiting screw; 33-transition small door; 40-sealed door; 50-fan unit; 501-motor; 502-stainless steel fan blades; 503-wind guide cover; 504-motor mounting plate; 505-guide sleeve; 506-Teflon gasket; 60-sampling port; 71-compressor; 72-heat exchanger; 73-throttle valve; 74-condenser; 81-circulating pump; 82-first water spray pipe; 83-second water spray pipe; 84-water collecting tank; 85-water baffle. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] like Figure 1-5 As shown, one embodiment of the present invention is: a water-cooled temperature-controlled environmental test chamber, comprising:

[0054] The inner box 10 is formed by splicing a plurality of wall panel units;

[0055] An outer box 20, which is located outside the inner box 10;

[0056] A partition wall 30 is movably disposed in the inner box 10. The partition wall 30 separates the inner space of the inner box 10 into a test space 11 and a preparation space 12 which are isolated from each other. The test space 11 is used for sample testing.

[0057] A sealed door 40, which is installed on a side wall of the inner box 10 and is used to enter the test space 11 from the outside of the outer box 20;

[0058] A fan unit 50, which is installed at one end of the inner box 10 and is used to form air flow in the test space 11;

[0059] A sampling port 60, which is installed on the inner box 10 and is used to extract a gas sample in the test space 11;

[0060] A temperature control system is arranged outside the outer box, and the temperature control system includes a compressor 71, a heat exchanger 72, a throttle valve 73 and a condenser 74 connected in series;

[0061] The water circulation loop includes a circulation pump 81, a first water spray pipe 82, a second water spray pipe 83, a water collecting tank 84 and a connecting water channel. The first water spray pipe 82 is installed above the front side of the top wall plate of the inner box, and the front side of the top wall plate of the inner box is slightly higher than the rear side of the top wall plate. The first water spray pipe 82 is provided with a plurality of water spray outlets facing the upper surface of the top wall plate of the inner box; the second water spray pipe 83 is installed behind the upper part of the rear wall plate of the inner box, and the second water spray pipe 83 is provided with a plurality of water spray outlets facing the outer surface of the rear wall plate of the inner box; the water collecting tank 84 is installed at the bottom of the rear wall plate of the inner box; water is pumped out to the water channel in the heat exchanger 72 through the circulation pump, and then sprayed out from the first water spray pipe 82 and the second water spray pipe 83. The water converging into the water collecting tank 84 is then sucked into the circulation pump 81 to form a water circulation.

[0062] The beneficial effects of adopting the above technical solution are: a movable isolation wall is set inside the inner box to facilitate the adjustment of the size of the test space to adapt to the test requirements of test samples of different sizes, thereby improving the versatility of the environmental test chamber and saving purchase costs and installation space; the medium water in the water circulation loop exchanges heat with the wall panel of the inner box on the outside of the inner box, thereby controlling the temperature of the test space inside the inner box to be maintained within the detection standard range, without affecting the gas environment in the box, and improving the detection accuracy.

[0063] like Figure 2 As shown, in some other embodiments of the present invention, a water retaining plate 85 is provided on the outer side of the top of the rear wall of the inner box. The beneficial effect of adopting the above technical solution is that the water spray from the top wall and the second water spray pipe can be effectively regulated and converged into the water collection tank below along the rear wall.

[0064] In some other embodiments of the present invention, an infrared sensor for detecting the moving position of the partition wall is provided in the deployment space of the inner box, the length directions of the first water spray pipe and the second water spray pipe are arranged parallel to the moving direction of the partition wall, a first water inlet close to the inner box test space and a second water inlet close to the inner box deployment space are respectively provided at both ends of the first water spray pipe, and a first flow control valve for controlling the water flow entering the first water inlet and the second water inlet is also provided on the connecting water path, the water flow entering the first water inlet is greater than the water flow entering the second water inlet, a plurality of stop valves distributed at intervals are provided on the first water spray pipe, and the first water spray pipe controls the flow of water entering the first water inlet and the second water inlet. The stop valve on the pipe closest to the isolation wall is in a closed state, and the other stop valves on the first water spray pipe are in an open state; a third water inlet close to the inner box test space and a fourth water inlet close to the inner box deployment space are respectively provided at both ends of the second water spray pipe, and a second flow control valve for controlling the water flow entering the third water inlet and the fourth water inlet is also provided on the connecting waterway, and the water flow entering the third water inlet is greater than the water flow entering the fourth water inlet, and multiple stop valves are provided at intervals on the second water spray pipe, and the stop valve on the second water spray pipe closest to the isolation wall is in a closed state, and the other stop valves on the second water spray pipe are in an open state. The beneficial effect of adopting the above technical solution is that it can control the area matching the test space to maintain a large water flow according to the position of the isolation wall, thereby improving the temperature control ability of the test space and playing an energy-saving role.

[0065] like Figure 6 , 7 As shown, in some other embodiments of the present invention, the wall panel unit includes a plurality of parallel stainless steel plates 101 and steel bars located at the edges of the stainless steel plates 101, and a copper bar is provided between the steel bars of adjacent wall panel units; the steel bar includes a main bar body 1021 and a right-angled side 1022 extending from the main bar body to one side, the stainless steel plate 101 is fixed on the right-angled side 1022, and the main bar body 1021 is provided with a countersunk hole 1023 for installing a fastening bolt. The beneficial effect of adopting the above technical solution is that it can facilitate the position fixing of the stainless steel plate and make the splicing of adjacent wall panel units more convenient.

[0066] like Figure 6 As shown, in some other embodiments of the present invention, the steel bars of the wall panel unit include two parallel long steel bars 102 and short steel bars 103 connected to both ends of the long steel bars, and multiple stainless steel plates 101 are arranged in parallel along the long steel bars 102, and a reinforcing flat tube 104 is provided on the surface of the joint of adjacent stainless steel plates. The beneficial effect of adopting the above technical solution is that the structural stability of the wall panel unit can be improved by connecting multiple stainless steel plates into one by two integrated long steel bars, and the reinforcing flat tube not only strengthens the sealing of the joint of adjacent stainless steel plates, but also improves the structural strength.

[0067] like Figure 8As shown, in other embodiments of the present invention, the isolation wall 30 includes a main sealing plate 301, a first round-shaped sealing strip 302 and a second round-shaped sealing strip 303, and the first round-shaped sealing strip 302 and the second round-shaped sealing strip 303 are respectively arranged on two sides of the four peripheral parts of the main sealing plate 301. The beneficial effects of adopting the above technical solution are: improving the sealing performance of the isolation wall, ensuring that the gas in the test space does not flow into the deployment space, and improving the accuracy of the test results.

[0068] like Figure 8-10 As shown, in some other embodiments of the present invention, a mobile driving mechanism 31 for driving the separation wall to move is also included, and the mobile driving mechanism 31 includes a front long rack 311, a rear long rack 312, a left front gear 313, a right front gear 314, a left rear gear 315, a right rear gear 316, a transmission shaft 317, a sprocket chain transmission mechanism (not shown in the figure) and a driving motor (not shown in the figure), and the front long rack 311 and the rear long rack 312 are respectively installed at the bottom of the inner box On the front and rear sides of the plate, the left front gear 313, the right front gear 314, the left rear gear 315, and the right rear gear 316 are all installed on the main sealing plate 301 of the isolation wall via bearings and bearing seats. The left front gear 313 and the right front gear 314 are meshed with the front long rack 311, and the left rear gear 315 and the right rear gear 316 are meshed with the rear long rack 312. The drive motor drives the right front gear 314 and the right rear gear 316 to rotate synchronously via the sprocket chain transmission mechanism and the transmission shaft. The support structure 32 is used to support the isolation wall. The support structure 32 includes four oblique support rods 321 and four roller assemblies respectively distributed in the left front, right front, left rear and right rear directions of the isolation wall. The upper and middle parts of the oblique support rods 321 are respectively fixedly mounted on the main sealing plate 301 of the isolation wall. The bottom of the oblique support rods 321 is provided with a support rod base 322. The roller assembly includes a roller 323 and a roller seat 324. The roller 323 is rotatably mounted on the roller seat 324. The roller 323 is a cylindrical roller with a horizontal axis, the axis of the roller 323 is perpendicular to the length direction of the front long rack 311, a vertical guide shaft 325 is provided on the roller seat 324, a guide sleeve 326 matching the guide shaft 325 is provided on the support rod base 322, a compression spring 327 is provided between the support rod base 322 and the roller seat 324, a limiting screw 328 is passed through the center of the compression spring 327, and the limiting screw 328 passes through the through hole on the support rod base and is connected to the roller seat 324. The beneficial effect of adopting the above technical solution is that the stability of the movement of the isolation wall is improved.

[0069] like Figure 5 As shown, in some other embodiments of the present invention, a transitional small door 33 is provided on the main sealing plate 301 of the isolation wall 30. The beneficial effect of adopting the above technical solution is that it is convenient to enter the deployment space from the test space for operation and maintenance.

[0070] In some other embodiments of the present invention, the first and second circular sealing strips are made of Teflon material, and the thickness of the first and second circular sealing strips is greater than the tooth spacing of the front long rack. The beneficial effect of the above technical solution is that the circular sealing strip is made of Teflon material with strong corrosion resistance, and the surface has outstanding self-lubricating properties, and the volatiles of the sample to be tested are not easy to adhere to the surface of the circular sealing strip.

[0071] In some other embodiments of the present invention, a long transparent window is provided on the upper part of the inner box along the moving direction of the partition wall, an image acquisition device and a linear moving mechanism for driving the image acquisition device to move along the transparent window are provided above the outer side of the inner box, and a controller is also included. The controller is connected to the image acquisition device, the linear moving mechanism and the moving drive mechanism by signal. The controller receives the projection of the sample to be tested acquired by the image acquisition device, calculates the projection area data, and sends a command signal to control the movement of the moving drive mechanism. The beneficial effect of adopting the above technical solution is that the image of the test sample can be automatically acquired to automatically adjust the position of the partition wall to obtain a test space of a reasonable size.

[0072] like Fig.11 As shown, in some other embodiments of the present invention, the fan unit 50 includes a motor 501, a stainless steel fan blade 502, an air guide cover 503, a motor mounting plate 504, a guide sleeve 505 and a Teflon gasket 506, the motor 501, the motor mounting plate 504, the guide sleeve 505 and the Teflon gasket 506 are all located outside the inner box, the stainless steel fan blade 502 and the air guide cover 503 are located inside the inner box, and the motor 501 mounting plate is fixed to the outer side of the stainless steel plate of the inner box wall On the stainless steel plate on the inner side of the motor mounting plate 504, a through hole for the motor shaft to penetrate is provided, a guide sleeve 505 is installed on the motor mounting plate 504, a motor 501 is installed on the guide sleeve 505, Teflon washers 506 are respectively installed between the joint surfaces of the guide sleeve 505 and the motor mounting plate 504, and between the joint surfaces of the guide sleeve 505 and the motor 501, a stainless steel blade 502 is connected to the motor shaft, and an air guide cover 503 is provided on the outer periphery of the stainless steel blade 502. The beneficial effect of adopting the above technical solution is that only the stainless steel blade and the air guide cover of the fan unit are inside the inner box, preventing the motor from generating waste gas and waste heat to the test space when it is running.

[0073] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable ordinary technicians in the field to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A water-cooled temperature-controlled environmental test chamber, characterized in that: include: An inner box, which is formed by splicing a plurality of wall panel units; An outer box, which is located outside the inner box; A partition wall is movably disposed in the inner box, and the partition wall separates the inner space of the inner box into a test space and a preparation space that are isolated from each other, and the test space is used for sample testing; A sealed door, which is installed on a side wall of the inner box and is used to enter the test space from the outside of the outer box; A fan unit, which is installed at one end of the inner box and is used to form air flow in the test space; A sampling port, which is installed on the inner box and is used to extract gas samples in the test space; A temperature control system is arranged outside the outer box, and the temperature control system includes a compressor, a heat exchanger, a throttle valve and a condenser connected in series; A water circulation loop, comprising a circulation pump, a first water spray pipe, a second water spray pipe, a water collection tank and a connecting water path, wherein the first water spray pipe is installed above the front side of the inner box top wall plate, the front side of the inner box top wall plate is slightly higher than the rear side of the top wall plate, the first water spray pipe is provided with a plurality of water spray ports facing the upper surface of the inner box top wall plate; the second water spray pipe is installed behind the upper part of the inner box rear wall plate, the second water spray pipe is provided with a plurality of water spray ports facing the outer surface of the inner box rear wall plate; the water collection tank is installed at the bottom of the inner box rear wall plate; water is pumped out to the water path in the heat exchanger through the circulation pump, and then sprayed out from the first water spray pipe and the second water spray pipe, and the water converging to the water collection tank is then sucked into the circulation pump to form a water cycle; A water retaining plate is provided on the outer side of the top of the rear wall plate of the inner box; An infrared sensor for detecting the moving position of the partition wall is arranged in the deployment space of the inner box. The length directions of the first water spray pipe and the second water spray pipe are arranged parallel to the moving direction of the partition wall. A first water inlet close to the inner box test space and a second water inlet close to the inner box deployment space are arranged at both ends of the first water spray pipe, respectively. A first flow control valve for controlling the water flow entering the first water inlet and the second water inlet is also arranged on the connecting water path. The water flow entering the first water inlet is greater than the water flow entering the second water inlet. A plurality of stop valves distributed at intervals are arranged on the first water spray pipe. The first water spray pipe is provided with a stop valve for controlling the water flow entering the first water inlet and the second water inlet. The nearest stop valve is in a closed state, and the other stop valves on the first water spray pipe are in an open state; a third water inlet close to the inner box test space and a fourth water inlet close to the inner box deployment space are respectively provided at both ends of the second water spray pipe, and a second flow control valve for controlling the water flow entering the third water inlet and the fourth water inlet is also provided on the connecting water path, the water flow entering the third water inlet is greater than the water flow entering the fourth water inlet, a plurality of stop valves distributed at intervals are provided on the second water spray pipe, the stop valve on the second water spray pipe closest to the isolation wall is in a closed state, and the other stop valves on the second water spray pipe are in an open state; It also includes a mobile driving mechanism for driving the isolation wall to move, the mobile driving mechanism includes a front long rack, a rear long rack, a left front gear, a right front gear, a left rear gear, a right rear gear, a transmission shaft, a sprocket chain transmission mechanism and a driving motor, the front long rack and the rear long rack are respectively mounted on the front and rear sides of the inner box bottom plate, the left front gear, the right front gear, the left rear gear and the right rear gear are all mounted on the main cover plate of the isolation wall via bearings and bearing seats, the left front gear and the right front gear are meshed with the front long rack, the left rear gear and the right rear gear are meshed with the rear long rack, and the driving motor drives the right front gear and the right rear gear to rotate synchronously via the sprocket chain transmission mechanism and the transmission shaft; The cam is an angular channel that is fixedly provided with a plurality of roller assemblies, each of which is provided with a plurality of roller assemblies and a plurality of roller assemblies, each of which is provided with a plurality of roller assemblies and a plurality of roller assemblies. The fan unit includes a motor, stainless steel blades, an air guide cover, a motor mounting plate, a guide sleeve and a Teflon gasket. The motor, the motor mounting plate, the guide sleeve and the Teflon gasket are all located on the outside of the inner box. The stainless steel blades and the air guide cover are located on the inside of the inner box. The motor mounting plate is fixed to the outer surface of the stainless steel plate of the inner box wall. A through hole for the motor shaft to penetrate is provided on the stainless steel plate on the inner side of the motor mounting plate. The guide sleeve is installed on the motor mounting plate. The motor is installed on the guide sleeve. Teflon gaskets are respectively installed between the joint surfaces of the guide sleeve and the motor mounting plate, and between the joint surfaces of the guide sleeve and the motor. The stainless steel blades are connected to the motor shaft, and the air guide cover is arranged on the outer periphery of the stainless steel blades.

2. The water-cooled temperature-controlled environmental test chamber according to claim 1 is characterized in that: The isolation wall comprises a main sealing plate, a first round-shaped sealing strip and a second round-shaped sealing strip, wherein the first round-shaped sealing strip and the second round-shaped sealing strip are respectively arranged on two side surfaces of the peripheral portion of the main sealing plate.

3. The water-cooled temperature-controlled environmental test chamber according to claim 2 is characterized in that: A small transition door is arranged on the main sealing plate of the isolation wall.

4. The water-cooled temperature-controlled environmental test chamber according to claim 2, characterized in that: The first circular sealing strip and the second circular sealing strip are made of Teflon material, and the thickness of the first circular sealing strip and the second circular sealing strip is greater than the tooth spacing of the front long rack.

5. The water-cooled temperature-controlled environmental test chamber according to claim 4, characterized in that: A long transparent window is provided on the upper part of the inner box along the moving direction of the partition wall, an image acquisition device and a linear moving mechanism for driving the image acquisition device to move along the transparent window are provided above the outer side of the inner box, and a controller is also included. The controller is connected to the image acquisition device, the linear moving mechanism and the moving drive mechanism by signal. The controller receives the projection of the sample to be tested acquired by the image acquisition device, and sends a command signal for controlling the action of the moving drive mechanism after processing.

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