Portable air conditioner compressor oil content testing device and testing method thereof

Abstract

The invention relates to the technical field of automobile air conditioners, and discloses a portable air conditioner compressor oil content testing device which comprises a container bottle, the two ends of the container bottle are open, a first switch valve and a second switch valve are installed at the two ends of the container bottle respectively, the second switch valve is further connected with an adjustable quick connector through a connecting pipe, and a detachable filter paper insertion piece is arranged in the middle of the container bottle. And the filter paper insert is sealed with the container bottle when being inserted into the container bottle. The invention further discloses a testing method of the portable air conditioner compressor oil content testing device. According to the portable air conditioner compressor oil content testing device and the testing method thereof, laboratory equipment does not need to be connected, the portable air conditioner compressor oil content testing device can be carried about, and the limitation problem that the oil content of an air conditioner system can only be tested in a third-party laboratory is solved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile air conditioners, and in particular to a portable air conditioner compressor oil content testing device and a testing method thereof. Background Art

[0002] Most domestic manufacturers currently use the acoustic method, transmission method and oil separation method to test the oil content of air conditioning systems. The acoustic method uses the principle of the change in the propagation speed of sound waves in the mixed liquid, and calculates the oil content by measuring the propagation speed and temperature of sound waves in the refrigerant; the transmission method uses optical elements to measure the oil concentration in the compressor exhaust pipe, and calculates the oil volume by measuring the attenuation of the transmitted light; the oil separation method collects lubricating oil through the oil separator, returns it to the low-pressure section of the system in real time, and measures the oil volume.

[0003] However, the above measurement methods all require the construction of an air-conditioning system test bench, and then measurement is performed in the laboratory using special equipment. Although the accuracy is high, the required cycle and cost are very high, and there are great limitations. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies of the above-mentioned technology and to provide a portable air-conditioning compressor oil content testing device and a testing method thereof, which does not need to be connected to laboratory equipment and can be carried with you, thus solving the limitation problem that the oil content of the air-conditioning system can only be tested in a third-party laboratory.

[0005] To achieve the above-mentioned purpose, the portable air-conditioning compressor oil content testing device involved in the present invention includes a container bottle, the two ends of which are open, and a first switch valve and a second switch valve are respectively installed thereon, the second switch valve is also connected to an adjustable quick connector through a connecting pipe, and a detachable filter paper insert is provided in the middle of the container bottle, and the filter paper insert maintains a seal with the container bottle when inserted into the container bottle.

[0006] Preferably, filter paper is provided on the filter paper insert, and the filter paper divides the internal space of the container bottle into two parts, one part is communicated with the first switch valve, and the other part is communicated with the second switch valve.

[0007] Preferably, the filter paper is replaceable filter paper, and after the filtering effect of the filter paper fails, the filter paper can be quickly disassembled and replaced, which is convenient and quick.

[0008] A testing method for a portable air-conditioning compressor oil content testing device comprises connecting the container bottle to a high-pressure pipeline of an air-conditioning system, using the system high pressure to press a mixture of a refrigerant and refrigeration oil into the container bottle, then removing the refrigerant, and measuring the oil content value in the air-conditioning system by a weighing method.

[0009] Preferably, the method comprises the following steps:

[0010] A) After the vehicle has completed the air conditioning system cooling test, continue to turn on the air conditioning;

[0011] B) Use an electronic scale to weigh the initial mass M of the test device 0 ;

[0012] C) keeping the first switch valve and the second switch valve closed, connecting the adjustable quick connector to the high-pressure filling valve of the air conditioning system;

[0013] D) rotating the adjustable quick connector to connect the connecting pipe to the air-conditioning high-pressure pipeline, opening the second switch valve, and waiting for several minutes to collect the mixture of refrigerant and refrigeration oil in the air-conditioning system;

[0014] E) After collecting the mixture of refrigerant and refrigeration oil, disconnect the adjustable quick connector and weigh the mass M of the test device at this time using an electronic scale. 1 ;

[0015] F) Slowly open the first switch valve to slowly release the high-pressure gaseous refrigerant in the container bottle, and the filter paper insert filters the refrigerant oil in the mixture. After the refrigerant is completely released, use an electronic scale to weigh the mass M of the test device at this time. 2 , then the oil content of the air conditioning compressor refrigeration oil

[0016] Preferably, in step A), when the air conditioner continues to be turned on, the speed is controlled at 1500-1600 rpm / min, the air conditioner in the cab is adjusted to external circulation, full cold blowing mode, and the windshield is maximum.

[0017] Preferably, in the step D), the second switch valve is opened and the mixture is left to stand for 5-10 minutes.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. It does not need to be connected to the laboratory equipment in a specific laboratory environment. It can be carried with you and used in a wider geographical range. It effectively solves the limitation that the oil content of the air-conditioning system can only be tested in a third-party laboratory, and the test cost is lower.

[0020] 2. Simple structure, easy operation and accurate testing;

[0021] 3. The filter paper can be quickly disassembled and replaced. When the filtering effect of the filter paper fails, it can be quickly disassembled and replaced, which is convenient and quick.

[0022] 4. It can quickly detect the oil content of the air-conditioning system, greatly shorten the analysis time of the compressor oil return failure problem, and reduce the cost of after-sales fault investigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a structural schematic diagram of a portable air-conditioning compressor oil content testing device.

[0024] The components in the figure are numbered as follows:

[0025] Container bottle 1, first switch valve 2, second switch valve 3, connecting pipe 4, adjustable quick connector 5, filter paper insert 6, filter paper 7. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figure 1 As shown, a portable air-conditioning compressor oil content testing device includes a container bottle 1. The two ends of the container bottle 1 are open, and a first switch valve 2 and a second switch valve 3 are respectively installed. The second switch valve 3 is also connected to an adjustable quick connector 5 through a connecting pipe 4. A detachable filter paper insert 6 is provided in the middle of the container bottle 1. When the filter paper insert 6 is inserted into the container bottle 1, it maintains a seal with the container bottle 1.

[0030] Among them, filter paper 7 is provided on the filter paper insert 6, and the filter paper 7 divides the internal space of the container bottle 1 into two parts, one part is connected with the first switch valve 2, and the other part is connected with the second switch valve 3. The filter paper 7 is a replaceable filter paper. After the filtering effect of the filter paper fails, the filter paper can be quickly disassembled and replaced, which is convenient and quick.

[0031] The testing method of the portable air-conditioning compressor oil content testing device of the present embodiment is to connect the container bottle 1 to the high-pressure pipeline of the air-conditioning system, use the system high pressure to press the mixture of refrigerant and refrigeration oil into the container bottle 1, then remove the refrigerant, and measure the oil content value in the air-conditioning system according to the weighing method.

[0032] Specifically, the steps include:

[0033] A) After the vehicle has completed the air conditioning system cooling test, continue to turn on the air conditioner, control the speed at 1500-1600rpm / min, adjust the air conditioner in the cab to external circulation, full cold blowing mode, and the windshield is at its maximum;

[0034] B) Use an electronic scale to weigh the initial mass M of the test device 0 ;

[0035] C) Keep the first switch valve 2 and the second switch valve 3 closed, and connect the adjustable quick connector 5 to the high-pressure filling valve of the air conditioning system;

[0036] D) Rotate the adjustable quick connector 5 to connect the connecting pipe 4 to the air-conditioning high-pressure pipeline, open the second switch valve 3, and wait for 5-10 minutes, 5 minutes in this embodiment, to collect the mixture of refrigerant and refrigeration oil in the air-conditioning system;

[0037] E) After collecting the mixture of refrigerant and refrigeration oil, disconnect the adjustable quick connector 5 and weigh the mass M of the test device at this time using an electronic scale. 1 ;

[0038] F) Slowly open the first switch valve 2 to slowly release the high-pressure gaseous refrigerant in the container bottle 1, and filter the refrigerant oil in the mixture with the filter paper insert 6. After all the refrigerant is released, use an electronic scale to weigh the mass M of the test device at this time. 2 , then the oil content of the air conditioning compressor refrigeration oil

[0039] The portable air-conditioning compressor oil content testing device and the testing method of the present invention do not need to be connected to laboratory equipment under a specific laboratory environment, can be carried around, and can be used in a wider geographical range, effectively solving the limitation problem that the oil content of the air-conditioning system can only be tested in a third-party laboratory, and the testing cost is lower; the structure is simple, the operation is convenient and the test is accurate; the filter paper can be quickly disassembled and replaced, and after the filtering effect of the filter paper fails, the filter paper can be quickly disassembled and replaced, which is convenient and fast; the oil content of the air-conditioning system can be quickly detected, and the analysis time due to the compressor oil return failure problem is greatly shortened, and the after-sales failure investigation cost is reduced.

[0040] It should be noted that the description of the above technical solutions is exemplary, and this specification can be embodied in different forms and should not be interpreted as being limited to the technical solutions set forth herein. On the contrary, providing these descriptions will make the disclosure of the present invention thorough and complete, and will fully convey the scope disclosed in this specification to those skilled in the art. In addition, the technical solutions of the present invention are limited only by the scope of the claims.

[0041] Finally, it should be pointed out that the above content is a further detailed description of the invention in combination with specific implementation methods. It cannot be considered that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, simple replacements made without departing from the concept of the present invention should be regarded as belonging to the protection scope of the present invention. The above embodiments are only more representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments, and there can be many variations. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention should be considered to belong to the protection scope of the present invention.

[0042] For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, and the above structures should be regarded as belonging to the protection scope of the present invention.

Claims

1. A portable air-conditioning compressor oil content test device, characterized in that: The invention comprises a container bottle (1), wherein both ends of the container bottle (1) are open and are respectively provided with a first switch valve (2) and a second switch valve (3), wherein the second switch valve (3) is also connected to an adjustable quick connector (5) via a connecting pipe (4), and a detachable filter paper insert (6) is provided in the middle of the container bottle (1), and when the filter paper insert (6) is inserted into the container bottle (1), a seal is maintained between the container bottle (1).

2. The portable air-conditioning compressor oil content testing device according to claim 1 is characterized in that: The filter paper insert (6) is provided with a filter paper (7), and the filter paper (7) divides the internal space of the container bottle (1) into two parts, one part is communicated with the first switch valve (2), and the other part is communicated with the second switch valve (3).

3. The portable air-conditioning compressor oil content testing device according to claim 2 is characterized in that: The filter paper (7) is replaceable.

4. A testing method for the portable air-conditioning compressor oil content testing device as claimed in claim 1, characterized in that: The container bottle (1) is connected to the high-pressure pipeline of the air-conditioning system, and the mixture of the refrigerant and the refrigeration oil is pressed into the container bottle (1) using the high pressure of the system. Then, the refrigerant is removed, and the oil content value in the air-conditioning system is measured by weighing method.

5. The testing method of the portable air-conditioning compressor oil content testing device according to claim 4, characterized in that: The steps include: A) After the vehicle has completed the air conditioning system cooling test, continue to turn on the air conditioning; B) Weigh the initial mass M0 of the test device using an electronic scale; C) keeping the first switch valve (2) and the second switch valve (3) closed, and connecting the adjustable quick connector (5) to the high-pressure filling valve of the air conditioning system; D) rotating the adjustable quick connector (5) to connect the connecting pipe (4) to the air-conditioning high-pressure pipeline, opening the second switch valve (3), and waiting for several minutes to collect the mixture of refrigerant and refrigeration oil in the air-conditioning system; E) After collecting the mixture of the refrigerant and the refrigeration oil, disconnect the adjustable quick connector (5) and weigh the mass M1 of the test device at this time using an electronic scale; F) Slowly open the first switch valve (2) to slowly release the high-pressure gaseous refrigerant in the container bottle (1), and the filter paper insert (6) filters the refrigerant oil in the mixture. After all the refrigerant is released, use an electronic scale to weigh the mass M2 of the test device at this time, and then the oil content of the refrigerant oil in the air conditioner compressor is 6. The testing method of the portable air-conditioning compressor oil content testing device according to claim 5, characterized in that: In the step A), when the air conditioner is still turned on, the speed is controlled at 1500-1600 rpm / min, the air conditioner in the cab is adjusted to external circulation, full cold blowing mode, and the windshield is at its maximum.

7. The testing method of the portable air-conditioning compressor oil content testing device according to claim 5, characterized in that: In the step D), the second switch valve (3) is opened and the reaction mixture is left to stand for 5-10 minutes.

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