CN110865147A - Odor test and evaluation method for air conditioner evaporator - Google Patents
Odor test and evaluation method for air conditioner evaporator Download PDFInfo
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- CN110865147A CN110865147A CN201910914724.XA CN201910914724A CN110865147A CN 110865147 A CN110865147 A CN 110865147A CN 201910914724 A CN201910914724 A CN 201910914724A CN 110865147 A CN110865147 A CN 110865147A
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Abstract
The invention belongs to the technical field of automobile indoor air quality testing methods, and particularly relates to an odor testing and evaluating method of an air conditioner evaporator, which comprises the following steps: putting the air-conditioning evaporator into a closed test container meeting the conditions; the second step is that: connecting a condition parameter testing system including ventilation on a port of an air conditioner evaporator; the third step: adjusting and controlling parameters, introducing air into a closed container through a ventilation system, controlling wind speed, opening the container when air is introduced, smelling smell, and recording the odor intensity grade.
Description
Technical Field
The invention belongs to the technical field of automobile indoor air quality testing methods, and provides a method for testing and evaluating smell of an air conditioner evaporator.
Background
With the enhancement of the environmental awareness of consumers, the quality of air in the automobile is more and more concerned by the consumers, and the air pollution in the automobile mainly comes from benzene series, organic volatile matters of aldehydes and ketones, nitrogen oxides, carbon monoxide and the like. These contaminants not only originate from the entry outside the automobile, but also from the release of the materials within the automobile itself. Leather, carpets, textiles, plastic products, foamed rubber materials, air conditioning systems of seats in vehicles, various additives and fillers added in the process of processing and forming and the like are carriers of pollutants. Therefore, the pollution of air in the automobile is prevented, the quality of purified air in the automobile is improved, the emission of pollutants in the running of the automobile is controlled, and the odor detection of automobile parts and materials is required. Based on this, each automobile company has introduced its own odor test standards, such as VDA 270, general GMW 3205, and Q/BYDQ-a1901.408 of biddi automobiles, which are introduced by the german automobile industry association. These odor standards are basically based on heating the material at a specified temperature and then assessing whether it meets the specifications according to the rating specified by the standard. The air conditioner evaporator is made of metal, and has no odor, but material pollution possibly caused in the manufacturing and processing processes, and odor change of an evaporator core in a dry and wet state in the using process make evaluation of odor characteristics of the air conditioner evaporator meaningful, however, the related art in the prior art has many defects, such as odor test of the air conditioner evaporator is different from general parts and materials, if a general odor test method is adopted, a part of the air conditioner evaporator is cut out to be subjected to the odor test, so that only odor emitted by metal parts for preparing the air conditioner evaporator and the material pollution in the processing process can be tested. In the actual use process, the air conditioner evaporator needs to add a refrigerant, raise the temperature or lower the temperature to diffuse the temperature through the air path system, and simultaneously diffuse the odor, so that the odor of the tested material is not enough, and the result of simulating the odor emitted in the actual use process cannot be achieved, and therefore, an odor test and evaluation method is urgently needed to be developed to solve the problems.
Disclosure of Invention
In order to solve at least one of the above problems, the present invention provides an odor test evaluation method for an air conditioner evaporator, comprising the steps of:
the first step is as follows: putting the air-conditioning evaporator into a closed test container meeting the conditions;
the second step is that: connecting a condition parameter testing system including ventilation on a port of an air conditioner evaporator;
the third step: adjusting and controlling parameters, introducing air into the closed container through a ventilation system, controlling the wind speed, opening the container when the air is introduced, smelling the odor, and recording the odor intensity level;
the fourth step: closing the container, introducing air for several minutes, opening the container, evaluating the emitted odor, and recording the intensity grade;
the fifth step: stopping introducing air, recording the time after the wind speed is reduced to zero, evaluating the smell after a plurality of minutes, and recording the strength grade;
and a sixth step: finally, introducing air into the container again, recording the smell of the air-conditioning evaporator at the moment of introducing the air, and recording the strength grade;
the seventh step: sequentially adjusting other condition parameters, and respectively testing the odor intensity levels emitted by the evaporator under the conditions of other parameters;
eighth step: and counting the data recorded in the test to obtain an odor intensity value, and then judging whether the odor of the evaporator is qualified or not by comparing the odor intensity value with the odor intensity evaluation standard value.
Preferably, the first step is followed by the step of placing a thermometer in the container to monitor the real-time temperature of the air conditioner evaporator.
Preferably, the qualified closed container in the first step is a container made of aluminum or polycarbonate, one side of which can be opened in a sliding manner or the other side of which is fixed or has no odor.
Preferably, the ports in the second step include an inlet and an outlet and an external connection port.
Preferably, the condition parameter testing system in the second step comprises a temperature control and power system for introducing the refrigerant and controlling the temperature of the refrigerant, and a system for exchanging the type of the refrigerant.
Preferably, the parameter of the third step is to adjust the temperature of the introduced refrigerant to stabilize the temperature of the air conditioner evaporator at (0 ± 2) ° c, and after the temperature is stabilized, air is introduced into the closed container through a ventilation system and the wind speed is controlled at 108m 3/h.
Preferably, the number of minutes in the above step is 5 minutes.
Preferably, the seventh step adjusts other condition parameters to adjust temperature, and tests the odor intensity level of the air conditioner evaporator at (5 + -2) ° c, (10 + -2) ° c, (20 + -2) ° c and (30 + -2) ° c.
Preferably, the odor intensity evaluation is based on the standard GMW16151-2011, and if the odor intensity value is smaller than 9 after statistics of data recorded in the test, the odor characteristic of the air conditioner evaporator is not qualified; on the contrary, the odor intensity value obtained after statistics of the data recorded in the test is greater than or equal to 9, and the odor characteristic of the air-conditioning evaporator is qualified.
The beneficial effects of the invention are embodied in at least the following points:
the method scheme of the invention obtains the result by comprehensively evaluating the odor by considering the material, the processing process and the dynamic combination of each condition parameter process of the refrigerant, and the specific test evaluation method firstly considers the odor characteristic of the air conditioner evaporator manufacturing material and the influence of the odor formed by material pollution in the processing process; and secondly, considering the influence of temperature and wind speed on smell in the actual use process of the air conditioner evaporator, and evaluating the smell change of different use temperatures, the air conditioner is started and the stable operation and a period of time after the operation are finished by introducing the refrigerant and starting the air path system, so that the smell evaluation result obtained by the method scheme further embodies the beneficial effect of being more closely attached to the actual use condition of the air conditioner evaporator.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings: the following drawings of embodiments of the invention are included as part of the present invention for an understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings;
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
FIG. 1 is a flow chart of a process scheme of the present invention, which includes the following steps;
the first step is as follows: putting the air-conditioning evaporator into a closed test container meeting the conditions;
the second step is that: connecting a condition parameter testing system including ventilation on a port of an air conditioner evaporator;
the third step: adjusting and controlling parameters, introducing air into the closed container through a ventilation system, controlling the wind speed, opening the container when the air is introduced, smelling the odor, and recording the odor intensity level;
the fourth step: closing the container, introducing air for several minutes, opening the container, evaluating the emitted odor, and recording the intensity grade;
the fifth step: stopping introducing air, recording the time after the wind speed is reduced to zero, evaluating the smell after a plurality of minutes, and recording the strength grade;
and a sixth step: finally, introducing air into the container again, recording the smell of the air-conditioning evaporator at the moment of introducing the air, and recording the strength grade;
the seventh step: sequentially adjusting other condition parameters, and respectively testing the odor intensity levels emitted by the evaporator under the conditions of other parameters;
eighth step: and counting the data recorded in the test to obtain an odor intensity value, and then judging whether the odor of the evaporator is qualified or not by comparing the odor intensity value with the odor intensity evaluation standard value.
Further, the first step is followed by placing a thermometer in the container to monitor the real-time temperature of the air conditioner evaporator.
Further, the qualified closed container in the first step is a container made of aluminum or polycarbonate, one side of which can be opened in a sliding manner or the other side of which is fixed or has no odor.
Further, the ports in the second step include an inlet and an outlet and an external connection port.
Further, the condition parameter testing system in the second step comprises a temperature control and power system for introducing the refrigerant and controlling the temperature of the refrigerant, and a system with replaceable refrigerant types.
Furthermore, the regulation and control parameters in the third step are that the temperature of the introduced refrigerant is regulated to ensure that the temperature of the air conditioner evaporator is stabilized at (0 +/-2) DEG C, after the temperature is stabilized, air is introduced into the closed container through a ventilation system, and the air speed is controlled at 108m 3/h.
Further, the number of minutes in the above step was 5 minutes.
Further, in the seventh step, other condition parameters are adjusted to be the adjustment temperature in sequence, and the odor intensity grades emitted by the air conditioner evaporator at the temperature of (5 +/-2) ° c, (10 +/-2) ° c, (20 +/-2) ° c and (30 +/-2) ° c are respectively tested.
Further, the odor intensity evaluation is based on the standard GMW16151-2011, and if the odor intensity value obtained after the statistics of the data recorded in the test is less than 9, the odor characteristic of the air conditioner evaporator is unqualified; on the contrary, the odor intensity value obtained after statistics of the data recorded in the test is greater than or equal to 9, and the odor characteristic of the air-conditioning evaporator is qualified.
Example 1
On the basis of the above-mentioned method scheme of the present invention, the preferred embodiment of the present invention is as follows:
firstly, the air-conditioning evaporator is put into a container which is provided with one side capable of sliding to open and the other three sides which are fixed and are sealed and odorless and made of aluminum or polycarbonate. A thermometer is placed in the container to monitor the real-time temperature of the air conditioning evaporator. The inlet and outlet of the air conditioner evaporator are connected with a temperature control and power system which can be introduced with refrigerant and control the temperature of the refrigerant, and the type of the refrigerant can be changed according to the type of actual use. In addition, the glass container is externally connected with a ventilation system, and the ventilation system can regulate and control the wind speed and ensure the stability of the wind speed. The whole test is carried out in an odorless and closed room with the temperature of (23 +/-2) DEG C and the relative humidity of more than or equal to 60 percent.
And adjusting the temperature of the introduced refrigerant to stabilize the temperature of the air-conditioning evaporator at (0 +/-2) ° C, introducing air into the closed container through a ventilation system after the temperature is stabilized, and controlling the air speed at 108m 3/h. When air is introduced, the container door is opened, the odor emitted outwards is slightly smelled, and the odor intensity level is recorded. The door was then closed and the time recorded, and after 5min of aeration the door was opened again and the odor emitted was evaluated and the intensity rating recorded. And then stopping introducing air, recording the time after the wind speed is reduced to 0, evaluating the smell after 5min, and recording the strength grade. And finally, introducing air into the container again, recording the smell of the air-conditioning evaporator at the moment of introducing the air, and recording the strength grade. Then, the temperature is adjusted in sequence, and the odor intensity grades of the air conditioner evaporator at 5 +/-2 ℃, 10 +/-2 ℃, 20 +/-2 ℃ and 30 +/-2 ℃ are respectively tested. The data of the test record is then filled into the table below.
Table for evaluating smell and taste
The odor intensity evaluation was in accordance with the standard GMW 16151-2011. The table is as follows:
watch two
According to the recorded experimental data in the table I and the table II, if the data result is less than 9, the odor characteristic of the air conditioner evaporator is unqualified; otherwise, the data result is more than or equal to 9, and the odor characteristic of the air conditioner evaporator is qualified.
As can be seen from the above method scheme and the specific embodiments of the present invention, the method scheme of the present invention obtains the result by comprehensively evaluating the odor by considering the material itself and the processing process and combining the dynamic combination of the various condition parameter processes of the refrigerant, and the specific test evaluation method firstly considers the odor characteristics of the air conditioner evaporator manufacturing material itself and the influence of the odor caused by material pollution in the processing process; secondly, the influence of temperature and wind speed on smell is considered in the actual use process of the air conditioner evaporator, and the change of smell in different use temperatures, when the air conditioner is started, and in a period of time after stable operation and operation are finished is evaluated by introducing the refrigerant and starting the air path system, so that the smell evaluation result obtained by the method scheme further reflects the actual use condition of the air conditioner evaporator.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Claims (9)
1. An odor test and evaluation method of an air conditioner evaporator is characterized by comprising the following steps:
the first step is as follows: putting the air-conditioning evaporator into a closed test container meeting the conditions;
the second step is that: connecting a condition parameter testing system including ventilation on a port of an air conditioner evaporator;
the third step: adjusting and controlling parameters, introducing air into the closed container through a ventilation system, controlling the wind speed, opening the container when the air is introduced, smelling the odor, and recording the odor intensity level;
the fourth step: closing the container, introducing air for several minutes, opening the container, evaluating the emitted odor, and recording the intensity grade;
the fifth step: stopping introducing air, recording the time after the wind speed is reduced to zero, evaluating the smell after a plurality of minutes, and recording the strength grade;
and a sixth step: finally, introducing air into the container again, recording the smell of the air-conditioning evaporator at the moment of introducing the air, and recording the strength grade;
the seventh step: sequentially adjusting other condition parameters, and respectively testing the odor intensity levels emitted by the evaporator under the conditions of other parameters;
eighth step: and counting the data recorded in the test to obtain an odor intensity value, and then judging whether the odor of the evaporator is qualified or not by comparing the odor intensity value with the odor intensity evaluation standard value.
2. The method of claim 1, wherein the first step is further followed by the step of placing a thermometer in the container to monitor the real time temperature of the air conditioner evaporator.
3. The method according to claim 2, wherein the container in the first step is an aluminum or polycarbonate container having one side capable of sliding open or the other three sides fixed or odorless.
4. The method of claim 3, wherein the ports in the second step include an inlet and an outlet and an outer coupling port.
5. The method as set forth in claim 3, wherein the condition parameter testing system in the second step includes a temperature control and power system for introducing the refrigerant and controlling the temperature of the refrigerant, and a system for changing kinds of the refrigerant.
6. The method as claimed in claim 5, wherein the control parameter in the third step is to adjust the temperature of the introduced refrigerant to make the temperature of the air-conditioning evaporator stable at 0 ± 2 ℃, after the temperature is stable, introducing air into the closed container through the ventilation system and controlling the wind speed at 108m 3/h.
7. The method of claim 6, wherein the number of minutes in said step is 5 minutes.
8. The method as claimed in claim 7, wherein the seventh step sequentially adjusts other condition parameters to adjust temperature, and tests the intensity levels of the odor emitted from the air conditioner evaporator at 5 ± 2 ℃, 10 ± 2 ℃, 20 ± 2 ℃ and 30 ± 2 ℃ respectively.
9. The method according to any one of claims 1 to 8, characterized in that the odor intensity evaluation is according to the standard GMW16151-2011, and if the data recorded in the test is counted to obtain an odor intensity value smaller than 9, the odor characteristic of the air conditioner evaporator is not qualified; on the contrary, the odor intensity value obtained after statistics of the data recorded in the test is greater than or equal to 9, and the odor characteristic of the air-conditioning evaporator is qualified.
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Cited By (1)
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| CN112285283A (en) * | 2020-09-29 | 2021-01-29 | 奇瑞新能源汽车股份有限公司 | Subjective evaluation method for air quality in vehicle |
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