Small-sized damp-heat alternating salt spray test box

Abstract

The utility model relates to a small-sized damp and hot alternating salt spray test box, a refrigeration part and a dehumidification part are fixed in a test box body through a first tube plate and a second tube plate, heat exchange is completed through the refrigeration part, water contained in air is separated out through the dehumidification part, so that the air is dried, and due to the fact that the refrigeration part is provided with titanium foil fins, the salt spray resistance is improved, and the service life of the small-sized damp and hot alternating salt spray test box is prolonged. And the service life of the refrigerating part and the titanium foil fins is prolonged, so that the evaporator assembly meets the heat exchange area requirement on the premise of meeting the corrosion requirement.

Description

Technical Field

[0001] The present application relates to the technical field of salt spray test chambers, and in particular to a small-sized hot and humid alternating salt spray test chamber. Background Art

[0002] The salt spray test chamber is a test chamber used to artificially simulate the coastal salt spray environment. It is a test chamber that must be used to test the resistance of electrical and electronic products to salt spray corrosion. Since the salt spray test chamber has a high concentration of salt spray during the salt spray test, it is very corrosive to the components inside the salt spray test chamber, which has a great impact on the service life of the salt spray chamber itself.

[0003] Currently, 316L stainless steel is mostly used as the main metal material for various components of salt spray chambers. However, due to the special nature of salt spray experiments, salt spray chambers currently on the market that use 316L metal materials are still greatly affected by corrosion. Another anti-corrosion method is to spray anti-salt spray coatings on the surface of stainless steel materials, evaporators, and the outer surfaces of electric heaters. However, on the one hand, the relatively poor thermal conductivity of anti-salt spray corrosion coatings will affect the heat exchange performance of the evaporator. On the other hand, the anti-corrosion effect of anti-corrosion coatings currently on the market is still limited. Therefore, the corrosion resistance of salt spray chambers using 316L stainless steel is still not ideal.

[0004] Another consideration is using a titanium tube-wound titanium plate heat exchanger as the evaporator for the salt spray chamber's air handling circuit. However, its production is specialized and the welding process is relatively complex. Furthermore, since the heat exchange area per unit volume of a titanium tube-wound titanium plate evaporator is small, and small salt spray chambers require a small volume, the total heat exchange area is insufficient. In actual design, the only way to achieve the required cooling capacity is to increase the heat transfer temperature difference. This results in a low energy efficiency ratio and high power consumption for the chamber's refrigeration system, which is not conducive to energy conservation and high efficiency.

[0005] In summary, the existing salt spray test chamber made of stainless steel cannot fully meet the corrosion requirements of the salt spray test, while the titanium tube wrapped titanium fin heat exchanger can meet the corrosion requirements, but cannot meet the heat exchange area requirements of the salt spray chamber. Utility Model Content

[0006] Based on this, it is necessary to provide a small wet and hot alternating salt spray test chamber to address the problem that the existing salt spray test chamber made of stainless steel cannot fully meet the corrosion requirements of the salt spray test, while the titanium tube wrapped titanium fin heat exchanger can meet the corrosion requirements, but cannot meet the salt spray chamber's requirements for heat exchange area.

[0007] This application provides a small-scale wet heat alternating salt spray test chamber, comprising:

[0008] Test chamber body;

[0009] An evaporator assembly is provided in the test chamber body. The evaporator assembly includes a refrigeration section, a dehumidification section, titanium foil fins, a first tube sheet, and a second tube sheet. The first tube sheet is fixedly connected to the test chamber body, and the second tube sheet is fixedly connected to the test chamber body. The first tube sheet and the second tube sheet are symmetrically arranged about the center line of the test chamber body. The two ends of the dehumidification section are fixedly connected between the first tube sheet and the second tube sheet. The two ends of the refrigeration section are fixedly connected between the first tube sheet and the second tube sheet. The dehumidification section is arranged parallel to the refrigeration section, and the titanium foil fins are fixedly connected to the refrigeration section.

[0010] The present application relates to a small-scale hot and humid alternating salt spray test chamber, in which a refrigeration section and a dehumidification section are fixed in a test chamber body by means of a first tube sheet and a second tube sheet. Heat exchange is completed by the refrigeration section, and water contained in the air is analyzed out by the dehumidification section, thereby drying the air. Since the refrigeration section is provided with titanium foil fins, the salt spray resistance is improved, and the service life of the refrigeration section and the titanium foil fins is increased, so that the evaporator assembly of the present application ensures the area requirement for heat exchange while meeting the corrosion requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A three-dimensional diagram of a small-scale wet and hot alternating salt spray test chamber provided in one embodiment of the present application.

[0012] Figure 2 A schematic structural diagram of an evaporator assembly of a small-scale hot and humid alternating salt spray test chamber provided in one embodiment of the present application.

[0013] Figure 3 A schematic structural diagram of the first tube plate of a small-scale wet and hot alternating salt spray test chamber provided in one embodiment of the present application.

[0014] Figure 4 A schematic structural diagram of the second tube sheet of a small-scale wet and hot alternating salt spray test chamber provided in one embodiment of the present application.

[0015] Figure 5 A schematic diagram of the internal structure of a test chamber body of a small-scale humidity and heat alternating salt spray test chamber provided in one embodiment of the present application.

[0016] Reference numerals:

[0017] 100, test chamber body; 200, evaporator assembly; 201, refrigeration unit; 202, dehumidification unit;

[0018] 203, titanium foil fin; 204, first tube sheet; 205, second tube sheet; 206, titanium dispensing head;

[0019] 207, refrigeration titanium tube; 208, liquid inlet pipe; 209, titanium liquid separation capillary; 210, first tube plate body;

[0020] 211. First liquid inlet; 212. Second liquid inlet; 213. Second tube sheet body; 214. Titanium U-tube; 215. Liquid inlet threaded titanium joint; 216. First gas outlet; 217. Second gas outlet. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0022] The present application provides a small-sized wet and hot alternating salt spray test chamber.

[0023] like Figure 1 As shown, in one embodiment of the present application, the small-scale humidity and heat alternating salt spray test chamber includes a test chamber body 100 and an evaporator assembly 200 .

[0024] The test chamber body 100 is provided with a cooling evaporator and a dehumidifying evaporator. The evaporator assembly 200 is disposed within the test chamber body 100 and includes a cooling section 201, a dehumidifying section 202, titanium foil fins 203, a first tube sheet 204, and a second tube sheet 205. The first tube sheet 204 is fixedly connected to the test chamber body 100, and the second tube sheet 205 is fixedly connected to the test chamber body 100. The first and second tube sheets 204, 205 are symmetrically arranged about the centerline of the test chamber body 100. The ends of the dehumidifying section 202 are fixedly connected between the first and second tube sheets 204, 205. The ends of the cooling section 201 are fixedly connected between the first and second tube sheets 204, 205. The dehumidifying section 202 is disposed parallel to the cooling section 201, and the titanium foil fins 203 are fixedly connected to the cooling section 201.

[0025] Specifically, the dehumidification section 202 includes a plurality of titanium tubes, and the outer walls of the titanium tubes are not provided with titanium foil fins 203 .

[0026] like Figure 5 As shown, the test box body 100 further includes a refrigeration compressor and an expansion valve, and the outlet of the expansion valve is connected to the titanium liquid dispensing head 206 of the refrigeration part 201.

[0027] In this embodiment, the refrigeration part 201 and the dehumidification part 202 are fixed in the test chamber body 100 by the first tube sheet 204 and the second tube sheet 205. Heat exchange is completed by the refrigeration part 201, and water contained in the air is analyzed out by the dehumidification part 202, thereby drying the air. Since the refrigeration part 201 is provided with titanium foil fins 203, the salt spray protection performance is improved, and the service life of the refrigeration part 201 and the titanium foil fins 203 is increased, so that the evaporator assembly 200 of the present application ensures the area requirement for heat exchange while meeting the corrosion requirements.

[0028] like Figure 3 As shown, in one embodiment of the present application, the refrigeration part 201 includes a titanium separatory head 206, a refrigeration titanium tube 207, a liquid inlet pipe 208 and a titanium separatory capillary 209, one end of the liquid inlet pipe 208 is connected to one end of the refrigeration titanium tube 207, and the titanium separatory capillary 209 is fixedly connected to the titanium separatory head 206.

[0029] Specifically, a plurality of the refrigeration titanium tubes 207 are provided, and the plurality of refrigeration titanium tubes 207 are parallel to each other. The plurality of refrigeration titanium tubes 207 work in coordination to effectively improve the refrigeration efficiency of the refrigeration unit 201 .

[0030] The titanium liquid separation capillary 209 is connected to the titanium liquid separator.

[0031] In this embodiment, external water flows into the refrigeration titanium tube 207 through the liquid inlet pipe 208, and the water completes the refrigeration process in the refrigeration titanium tube 207.

[0032] Since the refrigerant before the titanium separator 206 contains gaseous and liquid states, the two refrigerants in different states are evenly distributed into each refrigeration titanium tube 207 through the titanium separator 206 and the titanium separator capillary 209 to ensure that the dosage of refrigerant in each line is the same.

[0033] The titanium liquid separation head 206 is used to transport liquid refrigerant, and the titanium liquid separation capillary 209 is used to transport liquid refrigerant.

[0034] like Figure 3 As shown, in one embodiment of the present application, the first tube sheet 204 includes a first tube sheet body 210, a first liquid inlet 211, and a second liquid inlet 212. The first tube sheet body 210 is fixedly connected to the test box body 100. The first tube sheet body 210 is provided with the first liquid inlet 211 and the second liquid inlet 212. The first liquid inlet 211 and the second liquid inlet 212 are symmetrically arranged about the center line of the inlet plate.

[0035] Specifically, both ends of the titanium liquid separation tube are fixedly connected to the first tube sheet body 210 and the second tube sheet body 213 respectively.

[0036] In this embodiment, the titanium liquid distribution tube is fixedly connected to the test box body 100 through the first tube sheet body 210 and the second tube sheet body 213, and the external water flow enters the refrigeration part 201 and the dehumidification part 202 respectively through the first liquid inlet 211 and the second liquid inlet 212.

[0037] like Figure 3 As shown, in one embodiment of the present application, one end of the first liquid inlet 211 is communicated with the refrigeration unit 201, and the other end of the first liquid inlet 211 is communicated with the suction pipe of the compressor.

[0038] Specifically, the first liquid inlet 211 is connected to the refrigeration titanium tube 207 , and the second liquid inlet 212 is connected to the dehumidification part 202 .

[0039] In this embodiment, external water flows into the refrigeration titanium tube 207 of the refrigeration unit 201 through the first liquid inlet 211 to cooperate with the titanium foil fins 203 to complete refrigeration.

[0040] like Figure 3 As shown, in one embodiment of the present application, one end of the second liquid inlet 212 is communicated with one end of the dehumidifying portion 202 , and the other end of the second liquid inlet 212 is communicated with the suction pipe of the compressor.

[0041] In this embodiment, external water flows into the dehumidification section 202 through the second liquid inlet 212. When the humid air enters the dehumidification section 202, since there is low-temperature refrigerant in the tube of the dehumidification section 202, the surface temperature of the dehumidification section 202 is lower than the dew point temperature of the humid air, so that the water contained in the humid air is analyzed out to complete the dehumidification process of the air.

[0042] like Figure 3 As shown, in one embodiment of the present application, the evaporator assembly 200 also includes a first air outlet 216 and a second air outlet 217, and the first air outlet 216 and the second air outlet 217 are both fixedly connected to the first tube plate 204, the first air outlet 216 is connected to the refrigeration part 201, and the second air outlet is connected to the dehumidification part 202.

[0043] Specifically, the other ends of the first air outlet 216 and the second air outlet 217 are connected to the refrigeration compressor through a three-way return air pipe.

[0044] In this embodiment, the air in the refrigeration unit 201 and the dehumidification unit 202 is discharged through the first air outlet 216 and the second air outlet 217 .

[0045] like Figure 4As shown, in one embodiment of the present application, the second tube sheet 205 includes a second tube sheet body 213 and a titanium U-tube 214 . The second tube sheet body 213 is fixedly connected to the test box body 100 , and the titanium U-tube 214 is opened on the surface of the second tube sheet body 213 .

[0046] In this embodiment, the refrigeration unit 201 and the dehumidification unit 202 are fixedly connected in the test box body 100 through the second tube sheet body 213 in coordination with the first tube sheet body 210 .

[0047] like Figure 4 As shown, in one embodiment of the present application, there are multiple titanium U-tubes 214 , and the multiple titanium U-tubes 214 are arranged on the surface of the second tube plate body 213 at equal intervals.

[0048] In this embodiment, the refrigeration titanium tube 207 and the dehumidification unit 202 are connected via the titanium U-tube 214, so that the dehumidification unit 202 and the refrigeration unit 201 form a whole to facilitate air circulation.

[0049] like Figure 2 As shown, in one embodiment of the present application, a plurality of titanium foil fins 203 are provided, and the plurality of titanium foil fins 203 are arranged at equal intervals in the refrigeration portion 201 .

[0050] Specifically, the spacing between the titanium foil fins 203 is generally 3 mm to 4 mm.

[0051] In this embodiment, since the heat transfer coefficient of titanium metal is relatively low, the titanium foil fins 203 are used to make the heat exchange fins larger, thereby increasing the heat exchange area to enhance the heat exchange on the air side outside the refrigeration titanium tube 207.

[0052] The unit volume heat exchange area of the evaporator using the refrigeration titanium tube 207 and the titanium foil fin 203 is much larger than the unit volume heat exchange area of the existing process titanium tube wrapped around titanium sheet evaporator. Therefore, the installation space of the evaporator using the refrigeration titanium tube 207 and the titanium foil fin 203 is between the copper tube sheath copper fin evaporator and the titanium tube wrapped titanium fin evaporator, and the raw material cost is also between the two evaporators, so the overall cost is basically within an acceptable range.

[0053] like Figure 2 As shown, in one embodiment of the present application, the inlets of the first liquid inlet 211 and the second liquid inlet 212 are both sleeved with liquid inlet threaded titanium joints 215 .

[0054] In this embodiment, the dehumidifying part 202 and / or the refrigeration part 201 is connected to external components through the liquid inlet threaded titanium joint 215.

[0055] The various technical features of the above-described embodiments can be combined arbitrarily, and the execution order of the method steps is not restricted. In order to make the description concise, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A small hot and humid salt spray test chamber, characterized in that: The small-scale wet heat alternating salt spray test chamber comprises: Test chamber body; An evaporator assembly includes a refrigeration section, a dehumidification section, titanium foil fins, a first tube sheet, and a second tube sheet. The first tube sheet is fixedly connected to the test chamber body, the second tube sheet is fixedly connected to the test chamber body, and the first tube sheet and the second tube sheet are symmetrically arranged about the center line of the test chamber body. The two ends of the dehumidification section are fixedly connected between the first tube sheet and the second tube sheet, and the two ends of the refrigeration section are fixedly connected between the first tube sheet and the second tube sheet. The dehumidification section is arranged parallel to the refrigeration section, and the titanium foil fins are fixedly connected to the refrigeration section.

2. The small-scale wet heat alternating salt spray test chamber according to claim 1, characterized in that: The refrigeration part includes a titanium liquid separation head, a refrigeration titanium tube, a liquid inlet pipe and a titanium liquid separation capillary. One end of the liquid inlet pipe is connected to one end of the refrigeration titanium tube, and the titanium liquid separation capillary is fixedly connected to the titanium liquid separation head.

3. The small-scale wet heat alternating salt spray test chamber according to claim 2, characterized in that: The first tube sheet includes a first tube sheet body, a first liquid inlet and a second liquid inlet. The first tube sheet body is fixedly connected to the test box body. The first tube sheet body is provided with a first liquid inlet and a second liquid inlet. The first liquid inlet and the second liquid inlet are symmetrically arranged about the center line of the inlet plate.

4. The small-scale wet heat alternating salt spray test chamber according to claim 3, characterized in that: One end of the first liquid inlet is communicated with the refrigeration unit, and the other end of the first liquid inlet is communicated with the suction pipe of the compressor.

5. The small-scale wet heat alternating salt spray test chamber according to claim 4, characterized in that: One end of the second liquid inlet is communicated with one end of the dehumidifying portion, and the other end of the second liquid inlet is communicated with the suction pipe of the compressor.

6. The small-scale wet heat alternating salt spray test chamber according to claim 5, characterized in that: The evaporator assembly further comprises: A first air outlet and a second air outlet, wherein the first air outlet and the second air outlet are both fixedly connected to the first tube plate, the first air outlet is communicated with the refrigeration part, and the second air outlet is communicated with the dehumidification part.

7. The small-scale wet heat alternating salt spray test chamber according to claim 6, characterized in that: The second tube sheet includes a second tube sheet body and a titanium U-tube. The second tube sheet body is fixedly connected to the test box body, and the titanium U-tube is opened on the surface of the second tube sheet body.

8. The small-scale wet heat alternating salt spray test chamber according to claim 7, characterized in that: There are multiple titanium U-tubes, and the multiple titanium U-tubes are arranged on the surface of the second tube plate body at equal intervals.

9. The small-scale wet heat alternating salt spray test chamber according to claim 8, characterized in that: A plurality of the titanium foil fins are provided, and the plurality of titanium foil fins are arranged at equal intervals in the refrigeration part.

10. The small-scale wet heat alternating salt spray test chamber according to claim 9, characterized in that: The inlets of the first liquid inlet and the second liquid inlet are both sleeved with liquid inlet threaded titanium joints.

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