CN112393919A - Air conditioner refrigeration performance test method - Google Patents
Air conditioner refrigeration performance test method Download PDFInfo
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- CN112393919A CN112393919A CN202011303036.9A CN202011303036A CN112393919A CN 112393919 A CN112393919 A CN 112393919A CN 202011303036 A CN202011303036 A CN 202011303036A CN 112393919 A CN112393919 A CN 112393919A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention belongs to the technical field of automobile air conditioner performance test, and discloses an air conditioner refrigeration performance test method, which comprises the following steps: checking and confirming that the automobile state meets the test requirements; if the test requirements are met, correspondingly mounting a temperature sensor and an air pressure sensor at each preset test point of the automobile; sequentially carrying out primary preheating, secondary preheating and temperature rising on the automobile; after the temperature rise is finished, a driver enters the vehicle, the vehicle is adjusted to be in an idle working condition, the air conditioner is controlled to be tested in a refrigeration mode of the preset temperature in the vehicle in a preset time and test environment, and the measurement result of the sensor is obtained to evaluate the refrigeration performance of the air conditioner. The test method is specially used for testing the special use condition of long-time idling in high-temperature environments in high-end business and government affair vehicle using scenes.
Description
Technical Field
The invention relates to the technical field of automobile air conditioner performance testing, in particular to an air conditioner refrigeration performance testing method.
Background
With the development of automobile technology, an automatic air conditioner gradually becomes an important configuration of a mainstream passenger car, the refrigeration performance of the air conditioner is one of important performances in the development process of the passenger car, and the performance index has a crucial influence on the comfort of passengers in a high-temperature environment in summer. The conventional test method is mainly used for testing the refrigeration performance of the air conditioner under the working conditions of idle speed and different vehicle speeds after preheating and heating the vehicle in an environmental laboratory.
The existing whole vehicle air conditioner refrigeration performance test method is mainly carried out by means of a QC/T658-2000 whole vehicle air conditioner cooling performance method, the test working condition is shown in table 1, the idle speed test working condition of the method is only 30min, and the air conditioner mode is A/C opening-maximum air quantity-internal circulation-minimum temperature-wind direction blowing surface.
TABLE 1 test conditions
However, in the scene of vehicles used in high-end business and government affairs, when waiting for visitors, the automobile needs to be kept idling for a long time (more than or equal to 2h), and at the moment, higher requirements are put forward on the reliability and the comfort of the refrigeration performance of the air conditioner of the vehicle. The existing whole vehicle air conditioner testing method cannot be applied to a special use working condition of idling (more than or equal to 2h) for a long time in a high-temperature environment in high-end business and government affair vehicle scenes, and the performance of the air conditioner under the condition cannot be accurately measured by the existing method.
Disclosure of Invention
The invention aims to provide a method for testing the refrigeration performance of an air conditioner, which aims to solve the problem that the existing testing method cannot be applied to a special use condition of long-time idling (more than or equal to 2h) in high-end business and government affair vehicle scenes.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for testing the refrigeration performance of an air conditioner comprises the following steps:
checking and confirming that the automobile state meets the test requirements;
if the test requirements are met, correspondingly mounting a temperature sensor and an air pressure sensor at each preset test point of the automobile;
sequentially carrying out primary preheating, secondary preheating and temperature rising on the automobile;
after the temperature rise is finished, a driver enters the vehicle, the vehicle is adjusted to be in an idle working condition, the air conditioner is controlled to be tested in a refrigeration mode of a preset in-vehicle temperature T in a preset time and in a test environment, and a measurement result of the sensor is obtained to evaluate the refrigeration performance of the air conditioner.
As a preferable scheme of the air conditioner refrigeration performance test method, the step of checking and confirming that the automobile state meets the test requirement comprises the following steps:
confirming that the parts of the air-conditioning system are complete and have no leakage;
confirming that the filling amount of the refrigerant in the air conditioning system meets the technical condition requirement of the vehicle;
confirming that each interface of the air supply pipeline is airtight, and each air outlet valve is flexible to operate;
confirming that the temperature control switch, the air volume control switch, the air direction selection switch and the internal and external circulation control switch are normally operated;
and confirming that the air tightness of the whole vehicle is normal.
As a preferable scheme of the air conditioner refrigeration performance test method, the step of checking and confirming that the automobile state meets the test requirement further comprises: and the hot air system provided with the shut-off valve on the hot air water pipe is confirmed to be normally opened and closed before the test.
As a preferable scheme of the method for testing the refrigeration performance of the air conditioner, the step of correspondingly installing the temperature sensors at the preset test points in the automobile comprises the following steps:
temperature sensors are respectively arranged at the center of the front part of the vehicle and the end face of the blowing surface air outlet, a seat, a condenser, a radiator, a compressor air suction pipe, a compressor exhaust pipe, a condenser inlet pipe, a condenser outlet pipe, the radiator, an evaporator inlet pipe and an evaporator outlet pipe.
As a preferable scheme of the method for testing the refrigeration performance of the air conditioner, the step of correspondingly installing the pressure sensors at the preset test points of the automobile comprises the following steps:
and pressure sensors are respectively arranged at the air conditioner low-pressure pipe filling opening and the air conditioner high-pressure pipe filling opening.
As a preferable scheme of the method for testing the refrigeration performance of the air conditioner, the step of preheating the automobile for the first time includes:
heating for 30 minutes under the conditions that the ambient temperature is 40 ℃, the relative humidity is 50%, the wind speed is 30km/h, the door and the window of the vehicle are fully opened, the engine is closed and the blower is closed.
As a preferable scheme of the method for testing the refrigeration performance of the air conditioner, the step of preheating the automobile for the second time includes:
at the ambient temperature of 40 ℃, the relative humidity of 50 percent and the illumination intensity of 1000W/m2Heating for 30 minutes under the conditions of 10km/h of wind speed, full opening of a door and a window of a vehicle, idling of an engine and medium speed of a blower.
As a preferable scheme of the method for testing the refrigeration performance of the air conditioner, the step of heating the automobile comprises the following steps:
at the ambient temperature of 40 ℃, the relative humidity of 50 percent and the illumination intensity of 1000W/m2Heating for 60 minutes under the conditions of 10km/h of wind speed, full closing of door and window, closing of engine and closing of blower.
As a preferable scheme of the air conditioner refrigeration performance test method, the test environment is as follows: at the ambient temperature of 40 ℃, the relative humidity of 50 percent and the illumination intensity of 1000W/m2And the wind speed is 0 km/h.
As a preferred scheme of the method for testing the refrigeration performance of the air conditioner, after the temperature rise is finished, a driver enters the vehicle, the vehicle is adjusted to an idle working condition, the air conditioner is controlled to test in a refrigeration mode of a preset temperature in the vehicle in a preset time and a test environment, and in the step of obtaining a measurement result of the temperature sensor to evaluate the refrigeration performance of the air conditioner, the preset time is more than 120min, the preset temperature in the vehicle is 25 ℃, and the vehicle is in an N-gear or a P-gear.
The invention has the beneficial effects that: the test method comprises the steps of firstly confirming that the automobile state meets the test requirement, installing a temperature sensor and an air pressure sensor corresponding to each preset test point of the automobile to obtain the temperature and the air pressure of different test positions, preheating and heating the automobile twice to simulate each part of the automobile to enter a normal use state, adjusting the automobile to be in an idle speed state and testing an air conditioner at a fixed temperature, and specially testing the special use condition of idling for a long time (more than or equal to 2h) in a high-temperature environment in a scene of high-end business and government affairs vehicles.
Drawings
Fig. 1 is a flowchart of a method for testing cooling performance of an air conditioner according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The invention provides a method for testing the refrigeration performance of an air conditioner, and referring to fig. 1, the method comprises the following steps:
s1 checks and confirms that the vehicle condition meets the test requirements. In this step, not only the vehicle air conditioning system but also the entire vehicle need to be detected, and the subsequent test stage can be entered only when both the two meet the test conditions.
Specifically, in this step, the following needs to be confirmed:
and a, confirming that the parts of the air-conditioning system are complete and have no leakage, and working is effective.
And b, confirming that the filling amount of the refrigerant in the air conditioning system meets the technical condition requirement of the vehicle.
c, confirming that each interface of the air supply pipeline is airtight, and flexibly operating each air outlet valve.
d, confirming that the temperature control switch, the air volume control switch, the air direction selection switch and the internal and external circulation control switch are operated normally.
e, confirming that the stop valve can be normally opened and closed before the test is carried out on the warm air system with the stop valve on the warm air water pipe.
The direction of the air outlet grille of the f blowing surface is adjusted to be slightly upward and faces to the upper part of the shoulder of a driver.
And g, the air tightness of the whole vehicle meets the technical condition requirements of the whole vehicle.
If all the parameter indexes meet the preset parameter conditions, the next step can be confirmed.
And S2, if the test requirements are met, correspondingly installing temperature sensors and air pressure sensors at each preset test point of the automobile.
The method specifically comprises the steps of placing an automobile in a complete automobile environment simulation laboratory, and correspondingly installing a temperature sensor and an air pressure sensor at the following test points.
A first temperature sensor is arranged one meter in front of the vehicle and used for acquiring the environmental temperature in a finished vehicle environment simulation laboratory.
And a second temperature sensor is arranged at a position which is 20mm-30mm inward from the center of the end face of the face blowing air outlet and is used for obtaining the temperature of the face blowing air outlet.
And a third temperature sensor is arranged on the longitudinal center plane of the seat at a distance H point of 650-750 mm and forwards from the front edge of the upper end surface of the backrest to 100-180 mm, and is used for obtaining the temperature of the head of the cab.
A fourth temperature sensor is installed at a position which is 10mm-30mm higher from the floor of the vehicle on the longitudinal center plane of the seat and is 200mm-400mm forward from the front edge of the upper surface of the seat cushion for obtaining the temperature of the knees of the driving cabin.
And a fifth temperature sensor is arranged on the longitudinal center plane of the seat and is 10mm-30mm away from the floor height of the vehicle, and is arranged at a position 200mm-400mm forward from the front edge of the upper surface of the seat cushion and is used for obtaining the foot temperature of the driving cabin.
And a sixth temperature sensor is arranged at a position which is 5mm-15mm away from the front surface of the condenser and corresponds to the center of the condenser, and is used for obtaining the front temperature of the condenser.
And a seventh temperature sensor is arranged at a position which is 5mm-15mm away from the rear surface of the condenser and corresponds to the center of the condenser, and is used for obtaining the rear temperature of the condenser.
And an eighth temperature sensor is arranged at a position 5-15 mm away from the rear surface of the radiator and corresponding to the center of the radiator and is used for obtaining the rear temperature of the radiator.
And a ninth temperature sensor is arranged on the surface of the suction pipe wall of the compressor and is not more than 20mm away from the compressor, and is used for obtaining the suction temperature of the compressor.
And a tenth temperature sensor is arranged on the wall surface of the exhaust pipe of the compressor at a position which is not more than 20mm away from the compressor and is used for obtaining the exhaust temperature of the compressor.
And an eleventh temperature sensor is arranged on the surface of the wall of the inlet pipe of the condenser and used for obtaining the inlet temperature of the condenser.
And a twelfth temperature sensor is arranged on the surface of the wall of the outlet pipe of the condenser and used for obtaining the outlet temperature of the condenser.
And a thirteenth temperature sensor is arranged on the surface of the wall of the inlet pipe of the evaporator and used for obtaining the inlet temperature of the evaporator.
And a fourteenth temperature sensor is arranged on the surface of the wall of the outlet pipe of the evaporator and used for obtaining the outlet temperature of the evaporator.
A first pressure sensor is installed at a filling port of a low-pressure pipe of an air conditioner and used for obtaining the low-pressure of an air conditioning system.
And a second pressure sensor is arranged at a filling port of the air-conditioning high-pressure pipe and used for obtaining the high-pressure of the air-conditioning system.
The temperature sensors are arranged at the test points, so that whether the working states of all parts of the air conditioning system are normal or not is monitored, the air conditioning performance is judged according to the temperature data of the three positions of the seat head, the knee and the feet, the air pressure sensors are arranged at the high-pressure pipe and the low-pressure pipe of the air conditioner, the running state of the air conditioner is mainly monitored, the air conditioner does not work for result judgment, and the air conditioner is only used for analyzing and checking the cause of problems when the air conditioning system works abnormally.
S3 the automobile is sequentially preheated for the first time, the second time and the temperature.
A first preheating stage: the environmental temperature is 40 ℃, the relative humidity is 50%, the air speed is 30km/h, the door and the window of the automobile are completely opened, the engine and the blower are closed, and the automobile runs for 30min under the conditions.
And a second preheating stage: the ambient temperature is 40 ℃, the relative humidity is 50%, and the illumination intensity is 1000W/m2And the wind speed is 10km/h, all doors and windows of the automobile are opened, the engine is controlled to be in an idle state, the blower is adjusted to be at a medium speed, and the automobile runs for 30min under the condition.
A temperature rising stage: ring (C)The ambient temperature is 40 ℃, the relative humidity is 50%, and the illumination intensity is 1000W/m2And the wind speed is 10km/h, all doors and windows of the automobile are closed, the engine and the blower are closed, and the automobile runs for 30min under the condition.
It is noted that the environmental chamber is heated to the target environmental temperature for the first preheating; the second preheating aims at balancing the temperature in the vehicle and the temperature in the bin in a short time, namely the temperature inside and outside the vehicle is the same; the purpose of heating is to simulate the use state in the actual environment, further raise the temperature in the vehicle by simulating sunshine, and simulate the harsher vehicle environment.
And the environment conditions are researched and developed through actual use environments and are relatively harsh environments for high-temperature, high-humidity and high-intensity illumination vehicles, the limit of the air conditioner performance can be fully tested by taking the environment conditions as an air conditioner refrigeration performance testing environment, and the reliability of the air conditioner refrigeration performance in other environments is ensured.
S4, after the temperature rise is finished, the driver enters the automobile, the automobile is adjusted to the idle working condition, the environmental temperature is 40 ℃, the relative humidity is 50%, and the illumination intensity is 1000W/m within the preset time of 300min2And controlling the air conditioner to test in a refrigeration mode with preset in-vehicle temperature T (25 ℃) in the test environment of full closing of the door and the window of the vehicle, and obtaining a measurement result of the temperature sensor to evaluate the refrigeration performance of the air conditioner.
In step S4, the vehicle is placed in P-gear or neutral.
The following are the experimental evaluation criteria for this example:
step S4 is carried out for 20 minutes, and the temperature of all the seats is required to be not more than 25 ℃ for the head, not more than 27 ℃ for the knees and not more than 28 ℃ for the feet.
Step S4 is performed for 20 to 300 minutes, and the head temperature, the knee temperature, and the foot temperature of each seat are required to be maintained at 25 ℃. + -. 1 ℃, 27 ℃. + -. 1 ℃, and 28 ℃. + -. 1 ℃.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The method for testing the refrigeration performance of the air conditioner is characterized by comprising the following steps of:
checking and confirming that the automobile state meets the test requirements;
if the test requirements are met, correspondingly mounting a temperature sensor and an air pressure sensor at each preset test point of the automobile;
sequentially carrying out primary preheating, secondary preheating and temperature rising on the automobile;
after the temperature rise is finished, a driver enters the vehicle, the vehicle is adjusted to be in an idle working condition, the air conditioner is controlled to be tested in a refrigeration mode of a preset in-vehicle temperature T in a preset time and in a test environment, and a measurement result of the temperature sensor is obtained to evaluate the refrigeration performance of the air conditioner.
2. The method for testing the refrigerating performance of an air conditioner according to claim 1, wherein the step of checking and confirming that the state of the vehicle satisfies the test requirements comprises:
confirming that the parts of the air-conditioning system are complete and have no leakage;
confirming that the filling amount of the refrigerant in the air conditioning system meets the technical condition requirement of the vehicle;
confirming that each interface of the air supply pipeline is airtight, and each air outlet valve is flexible to operate;
confirming that the temperature control switch, the air volume control switch, the air direction selection switch and the internal and external circulation control switch are normally operated;
and confirming that the air tightness of the whole vehicle is normal.
3. The method for testing the refrigerating performance of an air conditioner according to claim 2, wherein the step of checking and confirming that the state of the vehicle meets the test requirements further comprises: and the hot air system provided with the shut-off valve on the hot air water pipe is confirmed to be normally opened and closed before the test.
4. The method for testing the refrigeration performance of the air conditioner as claimed in claim 1, wherein the step of correspondingly installing the temperature sensor at each preset test point of the automobile comprises the following steps:
temperature sensors are respectively arranged at the center of the front part of the vehicle and the end face of the blowing surface air outlet, a seat, a condenser, a radiator, a compressor air suction pipe, a compressor exhaust pipe, a condenser inlet pipe, a condenser outlet pipe, the radiator, an evaporator inlet pipe and an evaporator outlet pipe.
5. The method for testing the refrigeration performance of the air conditioner as claimed in claim 4, wherein the step of correspondingly installing the pressure sensor at each preset test point of the automobile comprises the following steps:
and pressure sensors are respectively arranged at the air conditioner low-pressure pipe filling opening and the air conditioner high-pressure pipe filling opening.
6. The method for testing the refrigeration performance of the air conditioner according to any one of claims 1 to 5, wherein the step of preheating the automobile for the first time comprises the following steps:
heating for 30 minutes under the conditions that the ambient temperature is 40 ℃, the relative humidity is 50%, the wind speed is 30km/h, the door and the window of the vehicle are fully opened, the engine is closed and the blower is closed.
7. The method for testing the refrigeration performance of the air conditioner as recited in claim 6, wherein the step of preheating the automobile for the second time comprises the steps of:
at the ambient temperature of 40 ℃, the relative humidity of 50 percent and the illumination intensity of 1000W/m2Heating for 30 minutes under the conditions of 10km/h of wind speed, full opening of a door and a window of a vehicle, idling of an engine and medium speed of a blower.
8. The method for testing the refrigeration performance of the air conditioner as recited in claim 7, wherein the step of heating the automobile comprises the steps of:
at the ambient temperature of 40 ℃, the relative humidity of 50 percent and the illumination intensity of 1000W/m2Heating for 60 minutes under the conditions of 10km/h of wind speed, full closing of door and window, closing of engine and closing of blower.
9. The method for testing the refrigeration performance of the air conditioner as claimed in claim 1, wherein the test environment is as follows: at the ambient temperature of 40 ℃, the relative humidity of 50 percent and the illumination intensity of 1000W/m2And the wind speed is 0 km/h.
10. The method for testing the refrigeration performance of the air conditioner according to claim 9, wherein after the temperature rise is finished, a driver enters the vehicle to adjust the vehicle to an idle working condition after the temperature rise is finished, the air conditioner is controlled to test in a refrigeration mode of a preset in-vehicle temperature in a test environment within a preset time, and in the step of obtaining a measurement result of the temperature sensor to evaluate the refrigeration performance of the air conditioner, the preset time is more than 120min, the preset in-vehicle temperature T is 25 ℃, and the vehicle is in an N gear or a P gear.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113029626A (en) * | 2021-03-29 | 2021-06-25 | 重庆长安汽车股份有限公司 | Test method for pure electric vehicle air conditioner refrigeration performance rack |
| CN113295430A (en) * | 2021-05-11 | 2021-08-24 | 中国第一汽车股份有限公司 | Whole vehicle rack test method for verifying performance of air-cooled intercooler of passenger vehicle |
| CN114136653A (en) * | 2021-08-23 | 2022-03-04 | 上汽大通房车科技有限公司 | Temperature rise and temperature drop test method in vehicle |
| CN114441192A (en) * | 2022-01-26 | 2022-05-06 | 重庆长安汽车股份有限公司 | Method for testing and evaluating heat accumulation and power attenuation of passenger vehicle at normal temperature |
| CN114509633A (en) * | 2022-02-11 | 2022-05-17 | 山东豪驰智能汽车有限公司 | A kind of environmental simulation air conditioning test method |
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| CN114509633A (en) * | 2022-02-11 | 2022-05-17 | 山东豪驰智能汽车有限公司 | A kind of environmental simulation air conditioning test method |
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