Test device

Abstract

The utility model discloses test equipment which comprises a ventilation room, an air draft assembly, an air pipe assembly, a gas sampling assembly and a sampler. The ventilation room is used for accommodating samples; the air draft assembly is installed on the ventilation room and used for sucking air from the ventilation room. The gas pipe assembly comprises a first gas pipe and a second gas pipe, the first gas pipe and the second gas pipe are respectively communicated with a sample in the ventilation room, and the first gas pipe is used for providing detection gas for the sample; the gas sampling assembly is mounted on the second gas pipe and is used for controlling the second gas pipe to extract gas from the sample; the sampler is communicated with the second gas pipe and is used for absorbing the detection gas conveyed in the second gas pipe. In this way, the ventilation room is used for containing the sample, and air is exhausted from the ventilation room through the air exhaust assembly, so that the ventilation room can be kept in a negative pressure state when the testing equipment works, and the situation that testing personnel are harmed due to leakage of detection gas in the sample can be prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field related to odor tests, and particularly relates to a testing device. Background Art

[0002] When testing the removal rate of odor gas in a refrigerator according to the GB 21551.4 standard, the refrigerator is usually placed in the atmospheric environment of an ordinary laboratory for testing. It is impossible to isolate the diffusion of odor gas during the odor test of the refrigerator. If the refrigerator has poor airtightness or the refrigerator itself is designed with an internal and external circulation deodorization function, it is possible that the odor gas detected and introduced into the refrigerator leaks into the air, which will have a certain impact on the test personnel and even pose a hazard. Content of the Utility Model

[0003] In view of this, it is necessary to provide a testing device for solving the above technical problems.

[0004] A testing device is used to test the odor removal function of a sample; the testing device includes:

[0005] A ventilation chamber for accommodating the sample;

[0006] An air extraction assembly installed on the ventilation chamber for extracting air from the ventilation chamber;

[0007] An air pipe assembly includes a first air pipe and a second air pipe. The first air pipe and the second air pipe are respectively communicated with the sample in the ventilation chamber. Among them, the first air pipe is used to provide the detection gas to the sample;

[0008] A gas sampling assembly is installed on the second air pipe, and the gas sampling assembly is used to control the second air pipe to extract air from the sample;

[0009] A sampler is communicated with the second air pipe, and the sampler is used to absorb the detection gas conveyed in the second air pipe.

[0010] It can be understood that the sample is accommodated in the ventilation chamber, and air is extracted from the ventilation chamber through the air extraction assembly, so that the ventilation chamber can be maintained in a negative pressure state when the testing device works, thus preventing the situation that the test personnel are harmed due to the leakage of the detection gas in the sample.

[0011] In one embodiment, the air extraction assembly includes an air extraction pipe, and the air extraction pipe is connected and communicated with the ventilation chamber;

[0012] Among them, a fan is arranged on the air extraction pipe.

[0013] It can be understood that when the fan works, it sucks air through the air extraction pipe to ensure that the ventilation room maintains a negative pressure, which is convenient for the production and preparation of the air extraction component.

[0014] In one embodiment, the air extraction component further includes an activated carbon box, which is communicated with the air extraction pipe, and the air extraction pipe can discharge the extracted air into the activated carbon box.

[0015] It can be understood that discharging the air extracted by the air extraction pipe into the activated carbon box and using the activated carbon box to adsorb the detection gas that may be doped in the air can prevent the detection gas from being discharged into the atmospheric environment and has the effect of preventing environmental pollution.

[0016] In one embodiment, the ventilation room includes ventilation grilles, and the ventilation room can exchange air with the outside atmosphere through the ventilation grilles.

[0017] It can be understood that the ventilation grilles are used to realize the air exchange between the ventilation room and the outside atmosphere, which can meet the use requirement of the air extraction pipe for extracting air from the ventilation room.

[0018] In one embodiment, the ventilation room further includes a viewing window through which the tester can observe the sample located in the ventilation room.

[0019] It can be understood that by using the structural characteristics of the viewing window, the use requirement of the tester for observing the sample in the ventilation room can be met.

[0020] In one embodiment, the sampler includes a plurality of sampling bottles, and the plurality of sampling bottles are connected in series to the second air pipe, and the detection gas conveyed by the second air pipe can be discharged into the plurality of sampling bottles in sequence;

[0021] Wherein, each sampling bottle is respectively filled with a sampling solution, and the sampling solution can absorb the detection gas.

[0022] It can be understood that the sampling solution in the plurality of sampling bottles is used to absorb the detection gas in sequence, which can ensure the complete absorption of the detection gas conveyed by the second air pipe. On the one hand, it can ensure the accuracy of the final test result, and on the other hand, it also plays a role in preventing the detection gas from polluting the environment.

[0023] In one embodiment, the number of the sampling bottles is configured to be two. Along the flow direction of the gas, the two sampling bottles are sequentially set as the first sampling bottle and the second sampling bottle;

[0024] Wherein, the capacity of the detection gas absorbed by the sampling solution in the second sampling bottle is not higher than one tenth of the capacity of the detection gas absorbed by the sampling solution in the first sampling bottle.

[0025] It is understandable that through the above structural arrangement, it can be further ensured that the detected gas does not pollute the external environment.

[0026] In one embodiment, an air valve is provided on the second air pipe, and the air valve can control the on / off of the second air pipe.

[0027] It is understandable that the air valve is used to control the on / off of the second air pipe, so as to meet the use requirement of detecting the function of removing peculiar smell from the sample.

[0028] In one embodiment, the gas sampling assembly includes an air extraction pump, and the air extraction pump is used to control the second air pipe to extract gas from the sample.

[0029] It is understandable that the air extraction pump is used to provide the power when the second air pipe extracts gas from the sample, so as to meet the use requirement of the second air pipe extracting gas from the sample.

[0030] In one embodiment, the gas sampling assembly further includes a flowmeter, and the flowmeter is used to control the flow rate of the gas flowing in the second air pipe.

[0031] It is understandable that the flowmeter is used to control the flow rate of the gas flowing in the second air pipe, so as to meet the use requirement of testing the function of removing peculiar smell from the sample.

[0032] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art:

[0033] The test equipment claimed in this application uses a ventilation room to accommodate the sample and extracts air from the ventilation room through an air extraction component, so that the ventilation room can be maintained in a negative pressure state when the test equipment works, thus preventing the situation that the test personnel are harmed due to the leakage of the detected gas in the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0035] Figure 1 It is a partial structural schematic diagram of the test equipment provided by an embodiment of the present application;

[0036] Figure 2 It is a structural schematic diagram when the ventilation room and the air extraction component in the present application are assembled.

[0037] Reference numerals: 100, testing device; 10, ventilation chamber; 11, ventilation grille; 12, viewing window; 20, exhaust assembly; 21, exhaust duct; 22, activated carbon box; 30, gas pipe assembly; 31, first gas pipe; 311, gas cylinder; 312, air pump; 32, second gas pipe; 321, gas valve; 40, gas sampling assembly; 50, sampler; 51, sampling bottle; 511, first sampling bottle; 512, second sampling bottle; 200, sample. Detailed implementation manners

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] It should be noted that when an element is referred to as being "provided on" another element, it can be directly provided on the other element or there may also be an intermediate element. When an element is considered to be "provided on" another element, it can be directly provided on the other element or there may be an intermediate element at the same time. When an element is considered to be "fixed to" another element, it can be directly fixed to the other element or there may be an intermediate element at the same time.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0041] The testing device 100 claimed in this application is used to test the odor removal function of the sample 200. Here, the sample 200 is a refrigerator. Of course, for those skilled in the art, the sample 200 can also be other electrical appliances with odor removal functions.

[0042] Such as Figure 1 、 Figure 2As shown in the figure, the testing device 100 provided by an embodiment of the present application includes a ventilation chamber 10, an air extraction component 20, a tracheal component 30, a gas sampling component 40, and a sampler 50; the ventilation chamber 10 is used to accommodate the sample 200; the air extraction component 20 is installed on the ventilation chamber 10 and is used to extract air from the ventilation chamber 10; the tracheal component 30 includes a first trachea 31 and a second trachea 32, and the first trachea 31 and the second trachea 32 are respectively communicated with the sample 200 in the ventilation chamber 10. Among them, the first trachea 31 is used to provide a detection gas (not shown in the figure) to the sample 200; the gas sampling component 40 is installed on the second trachea 32, and the gas sampling component 40 is used to control the second trachea 32 to extract gas from the sample 200; the sampler 50 is communicated with the second trachea 32, and the sampler 50 is used to absorb the detection gas transported in the second trachea 32. Here, the air extraction component 20 is used to extract air from the ventilation chamber 10. Among them, the detection gas is trimethylamine or other similar gases, which will not be elaborated here.

[0043] It can be understood that the sample 200 is accommodated in the ventilation chamber 10, and air is extracted from the ventilation chamber 10 through the air extraction component 20, so that the ventilation chamber 10 can be maintained in a negative pressure state when the testing device 100 works, which can prevent the leakage of the detection gas in the sample 200 from harming the test personnel. It should be noted that when the testing device 100 works, the first trachea 31 will inject the detection gas into the sample 200. If the airtightness of the sample 200 is poor and the detection gas leaks, the detection gas will leak into the ventilation chamber 10. In the present application, the air extraction component 20 extracts air from the ventilation chamber 10 to maintain negative pressure, which can prevent the detection gas in the ventilation chamber 10 from leaking out of the ventilation chamber 10 and harming the test personnel.

[0044] As Figure 2 shown in the figure, the ventilation chamber 10 includes ventilation grilles 11, and the ventilation chamber 10 can exchange air with the outside atmosphere through the ventilation grilles 11, which can meet the use requirement of the air extraction component 20 to extract air from the ventilation chamber 10. In addition, using the structural characteristics of the ventilation grilles 11, foreign objects in the outside atmosphere can be prevented from entering the ventilation chamber 10 during the air exchange process between the ventilation chamber 10 and the outside atmosphere. It should be noted that the specific structure of the ventilation grilles 11 and the installation position of the ventilation grilles 11 in the ventilation chamber 10 can be specifically set according to the use requirements, which will not be elaborated here.

[0045] As Figure 2 shown in the figure, the ventilation chamber 10 further includes a viewing window 12, and the viewing window 12 allows the test personnel to observe the sample 200 located in the ventilation chamber 10. In this way, when the testing device 100 tests the deodorization function of the sample 200, the test personnel can observe the sample 200 in the ventilation chamber 10 in real time through the viewing window 12 to meet the use requirement of testing the deodorization function of the sample 200.

[0046] As Figure 2 shown, the air extraction assembly 20 includes an air extraction pipe 21, and the air extraction pipe 21 is connected to and communicated with the ventilation chamber 10; wherein, a fan (not shown in the figure) is provided on the air extraction pipe 21, so that when the testing device 100 works, the fan can be started to extract air from the ventilation chamber 10 through the air extraction pipe 21, thereby ensuring that the ventilation chamber 10 maintains a negative pressure, which is convenient for the production and preparation of the air extraction assembly 20. Here, the air extraction pipe 21 is communicated with the roof of the ventilation chamber 10, and the fan is arranged outside the ventilation chamber 10, which is convenient for the assembly of the air extraction assembly 20 and the ventilation chamber 10. Of course, in other embodiments, the fan can also be directly assembled to the ventilation chamber 10.

[0047] As Figure 2 shown, the air extraction assembly 20 further includes an activated carbon box 22, and the activated carbon box 22 is communicated with the air extraction pipe 21, and the air extraction pipe 21 can discharge the extracted gas into the activated carbon box 22. In this way, the activated carbon box 22 can be used to adsorb the detection gas that may be doped in the air pumped in the air extraction pipe 21, so as to prevent the detection gas from being discharged into the atmospheric environment, which can prevent environmental pollution and avoid harm to the test personnel due to the leakage of the detection gas.

[0048] As Figure 1 shown, one end of the first air pipe 31 far from the sample 200 is communicated with a gas cylinder 311, and the gas cylinder 311 can provide the detection gas for the sample 200 through the first air pipe 31. Here, an air pump 312 is installed on the first air pipe 31, which is used to extract the detection gas stored in the gas cylinder 311 and pump it to the sample 200 through the first air pipe 31.

[0049] As Figure 1 shown, a gas valve 321 is provided on the second air pipe 32, and the gas valve 321 can control the on / off of the second air pipe 32, so as to meet the use requirements for detecting the odor removal function of the sample 200. It should be noted that the gas valve 321 can adopt conventional electromagnetic valves, globe valves, etc. in the prior art.

[0050] As Figure 1 shown, the gas sampling assembly 40 includes an air extraction pump (not shown in the figure), and the air extraction pump is used to control the second air pipe 32 to extract air from the sample 200, so that the air extraction pump can provide power for the second air pipe 32 to extract air from the sample 200.

[0051] As Figure 1 shown, the gas sampling assembly 40 further includes a flow meter (not shown in the figure), and the flow meter is used to control the flow rate of the gas flowing in the second air pipe 32, so as to meet the use requirements for testing the odor removal function of the sample 200.

[0052] As Figure 1As shown, the sampler 50 includes a plurality of sampling bottles 51. The plurality of sampling bottles 51 are connected in series to the second air pipe 32, and the detection gas conveyed by the second air pipe 32 can be sequentially discharged into the plurality of sampling bottles 51. Among them, each sampling bottle 51 is respectively filled with a sampling solution, and the sampling solution can absorb the detection gas. When the testing device 100 works, the sampling solution in the plurality of sampling bottles 51 can be used to absorb the detection gas in sequence to ensure the complete absorption of the detection gas conveyed by the second air pipe 32. On the one hand, this can ensure the accuracy of the final test result, and on the other hand, it also plays a role in preventing the detection gas from polluting the environment. Here, the detection solution is a sulfuric acid solution with a volume of 10 ml. The sulfuric acid solution can absorb trimethylamine, and when the sulfuric acid solution has absorbed trimethylamine, other detectors can be used to test and analyze the trimethylamine absorbed by the sulfuric acid solution to obtain the content of the absorbed detection gas.

[0053] Preferably, the number of sampling bottles 51 is configured to be two. Along the gas flow direction, the two sampling bottles 51 are sequentially set as the first sampling bottle 511 and the second sampling bottle 512. Among them, the volume of the detection gas absorbed by the sampling solution in the second sampling bottle 512 is not higher than one-tenth of the volume of the detection gas absorbed by the sampling solution in the first sampling bottle 511. This enables the sampler 50 to have sufficient margin for absorbing the detection gas, which can prevent the sampler 50 from failing to absorb the detection gas in time, thus avoiding the situation of polluting the external environment and causing harm to the testing personnel. Of course, in other embodiments, the ratio between the volume of the detection gas absorbed by the sampling solution in the second sampling bottle 512 and the volume of the detection gas absorbed by the sampling solution in the first sampling bottle 511 can be set to one-eighth, one-sixth, etc. according to the usage requirements, as long as it is ensured that the volume of the detection gas absorbed by the sampling solution in the second sampling bottle 512 does not exceed the volume of the detection gas absorbed by the sampling solution in the first sampling bottle 511.

[0054] As can be seen from the above, when the testing device 100 of the present application tests the odor removal function of the sample 200, it is necessary to first inject a certain amount of detection gas into the sample 200 through the first air pipe 31 so that the concentration of the detection gas in the sample 200 is between 2 mg / m 3 ~12 mg / m 3, during this process, the sampler 50 can be used to analyze the absorption of the detected gas in the sample 200 to ensure the concentration of the detected gas in the sample 200. After being purified by the odor removal function of the sample 200 itself, the gas sampling assembly 40 uses the second air pipe 32 to extract gas from the sample 200 under the flow control of 0.5 L / min to 1.0 L / min, continuously sample for no less than 20 minutes, and achieve the absorption of the detected gas by the sampler 50, and analyze to obtain the concentration of the detected gas. When the detected concentration is less than the previous concentration, it can prove that the odor removal function of the sample 200 is effective; otherwise, it proves that the odor removal function of the sample 200 is ineffective.

[0055] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0056] Those of ordinary skill in the art of this technology should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as it is within the scope of the essential spirit of the present invention, appropriate changes and variations made to the above embodiments fall within the scope of protection required by the present invention.

Claims

1. A testing device for testing the odor removal function of a sample (200); characterized in that, The test device (100) includes: A ventilation chamber (10) for accommodating the sample (200); An air extraction assembly (20) installed on the ventilation chamber (10) for extracting air from the ventilation chamber (10); An air pipe assembly (30) including a first air pipe (31) and a second air pipe (32), the first air pipe (31) and the second air pipe (32) are respectively communicated with the sample (200) in the ventilation chamber (10), wherein the first air pipe (31) is used to provide a detection gas to the sample (200); A gas sampling assembly (40) installed on the second air pipe (32), and the gas sampling assembly (40) is used to control the second air pipe (32) to extract gas from the sample (200); A sampler (50) communicated with the second air pipe (32), and the sampler (50) is used to absorb the detection gas conveyed in the second air pipe (32).

2. The testing device according to claim 1, wherein, The air extraction assembly (20) includes an air extraction pipe (21), and the air extraction pipe (21) is connected and communicated with the ventilation chamber (10); Wherein, a fan is provided on the air extraction pipe (21).

3. The test device according to claim 2, characterized in that, The air extraction assembly (20) further includes an activated carbon box (22), the activated carbon box (22) is communicated with the air extraction pipe (21), and the air extraction pipe (21) can discharge the extracted air into the activated carbon box (22).

4. The test device according to claim 1, characterized in that, The ventilation chamber (10) includes ventilation grilles (11), and the ventilation chamber (10) can exchange air with the outside atmosphere through the ventilation grilles (11).

5. The test device according to claim 1, characterized in that, The ventilation chamber (10) further includes a window (12), and the window (12) allows the test personnel to observe the sample (200) located in the ventilation chamber (10).

6. The test device according to claim 1, wherein, The sampler (50) includes a plurality of sampling bottles (51), and the plurality of sampling bottles (51) are connected in series to the second air pipe (32), and the detection gas conveyed by the second air pipe (32) can be sequentially discharged into the plurality of sampling bottles (51); Wherein, each of the sampling bottles (51) is filled with a sampling solution, and the sampling solution can absorb the detection gas.

7. The testing device according to claim 6, wherein, The number of the sampling bottles (51) is configured to be two, and along the flow direction of the gas, the two sampling bottles (51) are sequentially set as a first sampling bottle (511) and a second sampling bottle (512); Wherein, the capacity of the detection gas absorbed by the sampling solution in the second sampling bottle (512) is not higher than one-tenth of the capacity of the detection gas absorbed by the sampling solution in the first sampling bottle (511).

8. The test device according to claim 1, wherein, A gas valve (321) is provided on the second air pipe (32), and the gas valve (321) can control the on / off of the second air pipe (32).

9. The testing device according to claim 1, wherein The gas sampling assembly (40) includes an air extraction pump, and the air extraction pump is used to control the second air pipe (32) to extract gas from the sample.

10. The test device according to claim 1, characterized in that, The gas sampling assembly (40) further includes a flow meter, and the flow meter is used to control the flow rate of the gas flowing in the second air pipe (32).

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