A refrigerant content detection device for air conditioning system

Abstract

The present invention relates to the field of refrigerant detection, and in particular to a refrigerant content detection device for an air conditioning system, comprising a detection machine body, a display screen arranged on the front end surface of the detection machine body, a gas chromatograph arranged inside the detection machine body, a side mounting box fixedly arranged on one side of the detection machine body, a detection box arranged inside the side mounting box, an air inlet interface for connecting an air conditioning pipeline arranged on one side of the detection box, the other side of the detection box is connected to the input end and the output end of the gas chromatograph through an air inlet pipe and an air outlet pipe respectively, a separation cavity is arranged at one end of the inner cavity of the detection box near the air inlet interface, and staggered adsorption plates are fixedly arranged on the upper part of the detection box, and a tortuous cavity is formed between multiple groups of adsorption plates. The present invention can effectively remove particulate impurities in the gas in the air conditioning pipeline, avoid dust particles clogging the detection instrument, and greatly improve the detection accuracy of the refrigerant content.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerant detection, and in particular to a refrigerant content detection device for an air-conditioning system. Background Art

[0002] Refrigerant, commonly known as refrigerant, is a working fluid used to transfer heat energy and produce a refrigeration effect in refrigeration and air conditioning systems. It can be divided into primary refrigerant and secondary refrigerant according to the working method. It can be divided into natural refrigerant and synthetic refrigerant according to the material properties. The existing air conditioning refrigeration system includes a compressor, an outdoor heat exchanger, a throttling device, an indoor heat exchanger, and a certain amount of refrigerant pre-filled. Refrigerant leakage not only causes the performance of the air conditioner to decline, but also makes the compressor run in a poor condition. In severe cases, the compressor may even be damaged. Therefore, refrigerant content detection is an important and indispensable part of the normal operation of the air conditioning system.

[0003] Currently, to detect the refrigerant content in an air-conditioning system, the refrigerant in the internal storage space of the air conditioner needs to be extracted in the form of gas and pumped into the detection instrument for analysis and detection. In this process, due to the narrow and long air-conditioning pipes, the gas is easily mixed with particulate dust and impurities during the flow, which can easily lead to blockage of the detection instrument and interfere with the accuracy of the detection. Summary of the invention

[0004] The purpose of the present invention is to provide a refrigerant content detection device for an air-conditioning system, aiming to solve the above-mentioned technical problems.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A device for detecting refrigerant content in an air-conditioning system comprises a detection machine body, a display screen is arranged on the front end surface of the detection machine body, a gas chromatograph is arranged inside the detection machine body, a side mounting box is fixedly arranged on one side of the detection machine body, a detection box is arranged inside the side mounting box, an air inlet interface for connecting to an air-conditioning pipeline is arranged on one side of the detection box, the other side of the detection box is connected to the input end and the output end of the gas chromatograph through an air inlet pipe and an air outlet pipe respectively, a separation cavity is arranged at one end of the inner cavity of the detection box close to the air inlet interface, and the detection Adsorption plates distributed in a staggered manner are fixedly arranged on the upper part of the test box, and a tortuous cavity is formed between multiple groups of the adsorption plates. The upper end of the separation cavity is connected with the air inlet pipe at the top through the tortuous cavity, and a reflux cavity is arranged at the bottom of the test box. The bottom end of the separation cavity is connected with the air outlet pipe at the bottom through the reflux cavity, and a sedimentation cavity is arranged between the tortuous cavity and the reflux cavity. The gas in the air-conditioning pipeline passes through the tortuous cavity and enters the gas chromatograph from the air inlet pipe for detection. The gas after detection and filtration is discharged from the outlet pipe to the reflux cavity and returns to the air-conditioning pipeline.

[0007] As a further solution of the present invention: an extended shell 1 is provided on one side of the air inlet pipe, and a rotating fan blade 1 is rotatably installed in the extended shell 1; an extended shell 2 is provided on one side of the air outlet pipe, and a rotating fan blade 2 is rotatably installed in the extended shell 2.

[0008] As a further solution of the present invention: a bottom dust collecting groove is arranged at the bottom of the side installation box, the reflux cavity is connected with the bottom dust collecting groove through a dust collecting groove opening, a groove cover is arranged at one end of the bottom dust collecting groove, an installation cavity is arranged on one side of the side installation box, and a transmission assembly is arranged in the installation cavity.

[0009] As a further solution of the present invention: the transmission assembly includes a transmission shaft, a spur gear plate and a push rod, the upper and lower ends of the transmission shaft are rotatably matched with the side mounting box, the rotating blade one and the rotating blade two are sleeved on the transmission shaft, and the transmission shaft is fixedly sleeved with gear one and gear two, respectively, the gear one is meshed with the spur gear plate, a tooth groove is provided on one side of the push rod, and the gear two is meshed with the tooth groove.

[0010] As a further solution of the present invention: a support plate is extended on one side of the straight tooth plate, and the support plate is slidably sleeved on the sliding rod. Fixed seats are fixed at both ends of the sliding rod. The fixed seats are fixed on the inner wall of the installation cavity, and a reset spring is arranged between the support plate and the fixed seat.

[0011] As a further solution of the present invention: one end of the push rod extends into the bottom dust collection groove and is fixedly connected to the dust scraping slide, both ends of the dust scraping slide are slidably installed on the two side walls of the bottom dust collection groove, both ends of the straight tooth plate are fixedly connected to the connecting plate through a fixing rod, a sliding sleeve is slidably provided on the outer surface of the adsorption plate, a wiping plate is provided on the inner wall of the sliding sleeve, and the sliding sleeve is fixedly connected to the connecting plate through a connecting rod.

[0012] As a further solution of the present invention: a plurality of groups of adsorption plates are staggered, and the installation directions of two adjacent groups of adsorption plates are opposite, and the shape of the sliding sleeve is adapted to the distribution direction of the adsorption plates.

[0013] Beneficial effects of the present invention:

[0014] (1) By setting a unique cavity structure inside the detection box, during the detection process, the air conditioning pipeline is connected to the air inlet interface, and the gas containing refrigerant in the air conditioning pipeline will enter the separation cavity. At this time, the dust particle impurities mixed in the gas will settle to the reflux cavity below under the action of their own gravity, realizing primary separation and filtration, while the gas passes through the tortuous cavity above. The tortuous cavity can effectively extend the flow path length of the gas, so that the gas can fully contact with the adsorption plate, and use the adsorption plate to adsorb the particle impurities, realizing secondary adsorption and filtration. At the same time, the tiny particles in the upper gas will sink again through the sedimentation cavity during the circulation process, thereby effectively removing the particle impurities in the gas in the air conditioning pipeline, avoiding dust particles clogging the detection instrument, and greatly improving the detection accuracy of the refrigerant content.

[0015] (2) By setting up a transmission component, during the air intake detection process, the airflow will drive the rotating fan blade 1 and the transmission shaft to rotate, and the transmission shaft will drive gear 1 and gear 2 to rotate. When rotating, gear 1 will drive the spur plate to move linearly, so that the sliding sleeve slides on the surface of the adsorption plate, and the dust particles adsorbed on the surface of the adsorption plate are cleaned by the wiping plate. When rotating, gear 2 will drive the push rod forward, and the push rod will drive the dust scraping plate to slide in the bottom dust collection groove to push the dust particles out. When the exhaust gas reflux is completed, the airflow will drive the transmission shaft to rotate in the opposite direction through the rotating fan blade 2, so that the gas flow in the detection process can be used to realize the reciprocating dust removal and cleaning process of the adsorption plate and the bottom dust collection groove, thereby improving the dust removal effect and effectively avoiding the residual dust particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the cavity distribution inside the detection box of the present invention.

[0020] Figure 4 It is a schematic diagram of the internal structure of the side installation box in the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the air inlet pipe and the air outlet pipe in the present invention.

[0022] Figure 6 It is a structural schematic diagram of the transmission component in the present invention.

[0023] In the figure: 1. Detection machine body; 101. Display screen; 102. Gas chromatograph; 2. Side mounting box; 201. Bottom dust collecting slot; 202. Slot cover; 203. Mounting cavity; 3. Detection box; 301. Air inlet interface; 302. Separation cavity; 303. Tortuous cavity; 304. Reflux cavity; 305. Sedimentation cavity; 306. Dust collecting slot; 4. Air inlet pipe; 401. Extended housing 1; 402. Rotating fan blade 1; 5. Exhaust pipe; 501, extension shell 2; 502, rotating fan blade 2; 6, adsorption plate; 7, transmission assembly; 71, transmission shaft; 711, gear 1; 712, gear 2; 72, spur plate; 721, support plate; 722, slide bar; 723, fixed seat; 724, return spring; 73, push rod; 731, tooth groove; 74, dust scraping slide plate; 75, connecting plate; 76, sliding sleeve; 761, wiping plate; 762, connecting rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 4 As shown, the present invention is a refrigerant content detection device for an air-conditioning system, comprising a detection machine body 1, a display screen 101 is arranged on the front surface of the detection machine body 1, a gas chromatograph 102 is arranged inside the detection machine body 1, a side installation box 2 is fixedly arranged on one side of the detection machine body 1, a detection box 3 is arranged inside the side installation box 2, an air inlet interface 301 for connecting the air-conditioning pipeline is arranged on one side of the detection box 3, and the other side of the detection box 3 is connected to the input end and the output end of the gas chromatograph 102 through the air inlet pipe 4 and the air outlet pipe 5 respectively, a separation cavity 302 is arranged at one end of the inner cavity of the detection box 3 close to the air inlet interface 301, and the upper The detection box 3 is fixed with staggered adsorption plates 6, and a tortuous cavity 303 is formed between the multiple groups of adsorption plates 6. The upper end of the separation cavity 302 is connected with the air inlet pipe 4 at the top through the tortuous cavity 303, and a reflux cavity 304 is arranged at the bottom of the detection box 3. The bottom end of the separation cavity 302 is connected with the air outlet pipe 5 at the bottom through the reflux cavity 304. A sedimentation cavity 305 is arranged between the tortuous cavity 303 and the reflux cavity 304. The gas in the air-conditioning pipeline passes through the tortuous cavity 303 and enters the gas chromatograph 102 from the air inlet pipe 4 for detection. The gas after detection and filtration is discharged from the air outlet pipe 5 to the reflux cavity 304 and returns to the air-conditioning pipeline.

[0026] Specifically, by setting a unique cavity structure inside the detection box 3, during the detection process, the air-conditioning pipeline is connected to the air inlet interface 301, and the gas containing refrigerant in the air-conditioning pipeline will enter the separation cavity 302. At this time, the dust particle impurities mixed in the gas will settle to the reflux cavity 304 below under the action of their own gravity to achieve primary separation filtration, while the gas passes through the tortuous cavity 303 above. The tortuous cavity 303 can effectively extend the flow path length of the gas, so that the gas can fully and comprehensively contact the adsorption plate 6, and use the adsorption plate 6 to adsorb the particulate impurities to achieve secondary adsorption filtration. At the same time, the tiny particles in the upper gas will sink again through the sedimentation cavity 305 during the circulation process, thereby effectively removing the particulate impurities in the gas in the air-conditioning pipeline, avoiding dust particles from clogging the detection instrument, and greatly improving the detection accuracy of the refrigerant content.

[0027] It should be noted that when the gas containing the refrigerant enters the gas chromatograph 102, the gas is pushed into the chromatographic column. Since the distribution coefficients of the components between the gas phase and the stationary liquid phase in the chromatographic column are different, the running speeds of the components in the chromatographic column are also different. After a certain column length, they leave the chromatographic column in sequence and enter the detector. After detection, they are converted into electrical signals and sent to the data processing workstation, thereby completing the fully automatic qualitative and quantitative analysis of the gas. The detection process of the above-mentioned gas chromatograph 102 is known in the prior art and will not be described in detail here.

[0028] like Figure 5 As shown, an extension shell 401 is provided on one side of the air inlet pipe 4, and a rotating fan blade 402 is rotatably installed in the extension shell 401. An extension shell 501 is provided on one side of the air outlet pipe 5, and a rotating fan blade 502 is rotatably installed in the extension shell 501.

[0029] Specifically, during the test, the gas enters the gas chromatograph 102 from the air inlet pipe 4, and the gas will drive the rotating blade 1 402 to rotate during the flow process. After the test is completed, the gas will be discharged through the air outlet pipe 5, and the airflow will drive the rotating blade 2 502 to rotate. It should be noted that since the flow directions of the gas are opposite during the intake and exhaust, the rotation directions of the rotating blade 1 402 and the rotating blade 2 502 are also opposite.

[0030] like Figure 2 As shown, a bottom dust collecting groove 201 is arranged at the bottom of the side installation box 2, the return cavity 304 is connected with the bottom dust collecting groove 201 through a dust collecting groove opening 306, a groove cover 202 is arranged at one end of the bottom dust collecting groove 201, and an installation cavity 203 is arranged at one side of the side installation box 2, and a transmission assembly 7 is arranged in the installation cavity 203.

[0031] Specifically, by setting up a bottom dust collecting trough 201, the dust particles and impurities settled in the return cavity 304 will fall into the bottom dust collecting trough 201 through the dust collecting trough opening 306 for collection. At the same time, the transmission assembly 7 is used to realize the dust removal process. When cleaning the dust particles, the trough cover 202 can be opened to facilitate the effective discharge of the dust and impurities accumulated in the bottom dust collecting trough 201.

[0032] like Figure 5 and Figure 6 As shown, the transmission assembly 7 includes a transmission shaft 71, a spur plate 72 and a push rod 73. The upper and lower ends of the transmission shaft 71 are rotatably matched with the side mounting box 2. The rotating blade 1 402 and the rotating blade 2 502 are sleeved on the transmission shaft 71. The transmission shaft 71 is respectively fixedly sleeved with a gear 1 711 and a gear 2 712. The gear 1 711 and the spur plate 72 are meshed with each other. A tooth groove 731 is provided on one side of the push rod 73, and the gear 2 712 is meshed with the tooth groove 731.

[0033] Furthermore, one end of the push rod 73 extends into the bottom dust collection groove 201 and is fixedly connected to the dust scraping slide 74. Both ends of the dust scraping slide 74 are slidably installed on the two side walls of the bottom dust collection groove 201. Both ends of the straight tooth plate 72 are fixedly connected to the connecting plate 75 through a fixing rod. A sliding sleeve 76 is slidably provided on the outer surface of the adsorption plate 6. A wiping plate 761 is provided on the inner wall of the sliding sleeve 76. The sliding sleeve 76 is fixedly connected to the connecting plate 75 through a connecting rod 762.

[0034] Specifically, by setting the transmission component 7, during the air intake detection process, the airflow will drive the rotating fan blade 1 402 and the transmission shaft 71 to rotate, and the transmission shaft 71 will drive the gear 1 711 and the gear 2 712 to rotate. When the gear 1 711 rotates, it will drive the spur plate 72 to make a linear displacement, so that the sliding sleeve 76 slides on the surface of the adsorption plate 6, and uses the wiping plate 761 to clean the dust particles adsorbed on the surface of the adsorption plate 6. When the gear 2 712 rotates, it will drive the push rod 73 to push forward, and the push rod 73 will drive the dust scraping slide plate 74 to slide in the bottom dust collecting groove 201 to push the dust particles outward. When the exhaust gas reflux detection is completed, the airflow will drive the transmission shaft 71 to rotate in the opposite direction through the rotating fan blade 2 502, so that the gas flowability in the detection process can be used to realize the reciprocating dust removal and cleaning process of the adsorption plate 6 and the bottom dust collecting groove 201, thereby improving the dust removal effect and effectively avoiding the residual dust particles.

[0035] like Figure 6 As shown, a support plate 721 is extended from one side of the straight tooth plate 72, and the support plate 721 is slidably sleeved on the slide rod 722. Fixed seats 723 are fixedly provided at both ends of the slide rod 722. The fixed seats 723 are fixedly provided on the inner wall of the installation cavity 203, and a return spring 724 is provided between the support plate 721 and the fixed seat 723.

[0036] Specifically, the spur plate 72 will always slide on the slide bar 722 during the linear movement, and will squeeze the return spring 724 on one side during the movement. When the spur plate 72 slides in the opposite direction, the compressed return spring 724 will begin to restore its deformation, which is conducive to the stable sliding process of the spur plate 72 on the slide bar 722.

[0037] like Figure 6 As shown, a plurality of groups of adsorption plates 6 are arranged in a staggered manner, and the installation directions of two adjacent groups of adsorption plates 6 are opposite, and the shape of the sliding sleeve 76 is adapted to the distribution direction of the adsorption plates 6 .

[0038] Specifically, there are three groups of adsorption plates 6 in this embodiment, wherein the middle group of adsorption plates 6 is arranged downward, and the adsorption plates 6 arranged alternately on both sides are installed upward, which is conducive to forming a tortuous cavity 303. In order to simultaneously perform reciprocating sliding dust scraping processing on the adsorption plates 6, a sliding groove is arranged upward in the middle of the sliding sleeve 76, and sliding grooves are arranged downward on both sides of the sliding sleeve 76, so that the sliding sleeve 76 can be slidably sleeved on the surfaces of the three groups of adsorption plates 6 at the same time.

[0039] The working principle of the present invention is as follows: Figure 1-Figure 6 As shown, during the detection process, the air-conditioning pipeline is connected to the air inlet interface 301, and the gas containing refrigerant in the air-conditioning pipeline will enter the separation chamber 302. At this time, the dust particle impurities mixed in the gas will settle to the reflux chamber 304 below under the action of their own gravity, realizing primary separation and filtration, while the gas passes through the tortuous chamber 303 above. The tortuous chamber 303 can effectively extend the flow path length of the gas, so that the gas can fully and comprehensively contact the adsorption plate 6, and use the adsorption plate 6 to adsorb the particulate impurities to realize secondary adsorption and filtration. At the same time, the tiny particles in the upper gas will sink again through the sedimentation chamber 305 during the circulation process, thereby effectively removing the particulate impurities in the gas in the air-conditioning pipeline. During the air intake detection process, the airflow will drive the rotating fan blade 402 and the transmission shaft 71 to rotate, and the transmission shaft 71 will drive the gear 1 711 and the gear 2 712 to rotate. When rotating, the gear 1 711 will drive the straight tooth plate 72 to move linearly, so that the sliding sleeve 76 slides on the surface of the adsorption plate 6, and the wiping plate 761 is used to clean the dust particles adsorbed on the surface of the adsorption plate 6. When the gear 2 712 rotates, it will drive the push rod 73 to push forward, and the push rod 73 will drive the dust scraping slide 74 to slide in the bottom dust collecting groove 201 to push the dust particles outward. When the exhaust reflux detection is completed, the airflow will drive the transmission shaft 71 to rotate in the opposite direction through the rotating fan blade 2 502, so that the gas flowability during the detection process can be used to realize the reciprocating dust removal and cleaning process of the adsorption plate 6 and the bottom dust collecting groove 201.

[0040] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A refrigerant content detection device for an air conditioning system, comprising a detection machine body (1), a display screen (101) being arranged on the front end surface of the detection machine body (1), and a gas chromatograph (102) being arranged inside the detection machine body (1), characterized in that: A side mounting box (2) is fixedly arranged on one side of the detection machine body (1), a detection box (3) is arranged inside the side mounting box (2), an air inlet interface (301) for connecting to an air conditioning pipeline is arranged on one side of the detection box (3), the other side of the detection box (3) is connected to the input end and the output end of the gas chromatograph (102) through an air inlet pipe (4) and an air outlet pipe (5), respectively, a separation cavity (302) is arranged at one end of the inner cavity of the detection box (3) close to the air inlet interface (301), and staggered adsorption plates (6) are fixedly arranged on the upper part of the detection box (3), and a tortuous cavity (303) is formed between the multiple groups of the adsorption plates (6). ), the upper end of the separation cavity (302) is connected to the air inlet pipe (4) at the top through the tortuous cavity (303), the bottom of the detection box (3) is provided with a reflux cavity (304), the bottom end of the separation cavity (302) is connected to the air outlet pipe (5) at the bottom through the reflux cavity (304), a sedimentation cavity (305) is provided between the tortuous cavity (303) and the reflux cavity (304), the gas in the air conditioning pipeline passes through the tortuous cavity (303) and enters the gas chromatograph (102) from the air inlet pipe (4) for detection, and the gas after detection and filtration is discharged from the air outlet pipe (5) to the reflux cavity (304) and returns to the air conditioning pipeline; An extension shell 1 (401) is provided on one side of the air inlet pipe (4), and a rotating blade 1 (402) is rotatably mounted in the extension shell 1 (401); an extension shell 2 (501) is provided on one side of the air outlet pipe (5), and a rotating blade 2 (502) is rotatably mounted in the extension shell 2 (501); A mounting cavity (203) is provided on one side of the side mounting box (2), a transmission assembly (7) is provided in the mounting cavity (203), the transmission assembly (7) comprising a transmission shaft (71), a spur plate (72) and a push rod (73), the upper and lower ends of the transmission shaft (71) being rotatably matched with the side mounting box (2), the rotating blade one (402) and the rotating blade two (502) being sleeved on the transmission shaft (71), and the transmission shaft (71) being respectively sleeved with a gear one (711) and a gear two ( 712), the gear one (711) and the spur plate (72) are meshed with each other, a tooth groove (731) is provided on one side of the push rod (73), the gear two (712) is meshed with the tooth groove (731), both ends of the spur plate (72) are fixedly connected to the connecting plate (75) through a fixing rod, a sliding sleeve (76) is slidably provided on the outer surface of the adsorption plate (6), a wiping plate (761) is provided on the inner wall of the sliding sleeve (76), and the sliding sleeve (76) is fixedly connected to the connecting plate (75) through a connecting rod (762).

2. The refrigerant content detection device for an air conditioning system according to claim 1, characterized in that: A bottom dust collecting groove (201) is provided at the bottom of the side installation box (2); the return cavity (304) is connected to the bottom dust collecting groove (201) via a dust collecting groove opening (306); and a groove cover (202) is provided at one end of the bottom dust collecting groove (201).

3. The refrigerant content detection device for an air conditioning system according to claim 1, characterized in that: A support plate (721) is extended from one side of the spur plate (72), the support plate (721) is slidably sleeved on the slide bar (722), fixed seats (723) are fixedly provided at both ends of the slide bar (722), the fixed seats (723) are fixedly provided on the inner wall of the installation cavity (203), and a return spring (724) is provided between the support plate (721) and the fixed seat (723).

4. The refrigerant content detection device for an air conditioning system according to claim 2, characterized in that: One end of the push rod (73) extends into the bottom dust collecting groove (201) and is fixedly connected to the dust scraping slide plate (74), and the two ends of the dust scraping slide plate (74) are slidably mounted on the two side walls of the bottom dust collecting groove (201).

5. The refrigerant content detection device for an air conditioning system according to claim 1, characterized in that: The plurality of groups of adsorption plates (6) are arranged in a staggered manner, and the installation directions of two adjacent groups of adsorption plates (6) are opposite, and the shape of the sliding sleeve (76) is adapted to the distribution direction of the adsorption plates (6).

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