A refrigerant leak detection device for air conditioner maintenance

Abstract

This utility model relates to the field of refrigerant leak detection technology, specifically a refrigerant leak detection device for air conditioner maintenance. It solves the problems mentioned in the background art. The device includes an adsorption head, a universal cable, and a detector body. The detector body includes a protective shell, a detection block, a suction fan, and an electrostatic generator with short-circuit and overload protection functions. The universal cable connects to the adsorption head, and a through hole is provided at the bottom. The adsorption head, universal cable, detector body cavity, and through hole form a gas channel. This utility model, through the cooperation of the electrostatic generator and the adsorption head, generates an electrostatic field in the area to be detected, actively adsorbing and enriching low-concentration refrigerant molecules from micro-leaks. These molecules are then drawn to the detection block by the suction fan for precise analysis, improving detection sensitivity and solving the problems of low efficiency and easy missed detection of micro-leaks in traditional negative pressure suction leak detectors. This ensures the electrical and operational safety of the device.

Description

Technical Field

[0001] This utility model relates to the field of refrigerant leak detection technology, specifically a refrigerant leak detection device for air conditioner maintenance. Background Technology

[0002] Refrigerant is the key working fluid for heat transfer in air conditioning systems. Refrigerant leakage is one of the most common malfunctions during the manufacturing, installation, and long-term operation of air conditioning equipment. Leaks not only reduce the cooling and heating efficiency of the air conditioning system and increase energy consumption, but also harm the environment. Furthermore, some refrigerants, when accumulated to a certain concentration in a confined space, pose safety risks such as flammability, explosiveness, or asphyxiation. Therefore, quickly and accurately locating the refrigerant leak point is a core aspect of air conditioning maintenance.

[0003] Currently, devices used for detecting refrigerant leaks on the market mainly fall into the following categories: First, contact leak detectors. The disadvantages of this type of equipment are slow response speed, low sensitivity, and the sensor is easily affected by interference from other gases in the environment, leading to false alarms. Additionally, the sensor is at risk of "poisoning" and has a limited lifespan. Second, infrared absorption leak detectors, which have higher accuracy and sensitivity but are expensive and are typically used for qualitative or quantitative analysis. They have poor ability to accurately locate leak points, making it inconvenient for maintenance personnel to perform point-by-point checks on complex piping systems. Third, negative pressure suction leak detectors, which are currently the most mainstream handheld leak detectors. The device uses a built-in small suction fan to draw gas from the area to be tested into the instrument and send it to the detection unit for analysis. Compared with simply waiting for the gas to diffuse, this method improves detection efficiency and response speed. However, the detection effect still depends heavily on the natural diffusion of the gas and the suction force of the fan. For tiny leaks or when the initial concentration of the leak is extremely low, the leaked refrigerant molecules are easily diluted by the air and are difficult to be effectively drawn into the detector, leading to missed detections. This limitation is particularly evident when detecting parts of the air conditioning system with low pressure or in complex environments with weak airflow interference.

[0004] In summary, existing refrigerant leak detection devices still have shortcomings in terms of detection sensitivity and micro-leakage location capabilities. The main problem is that they cannot effectively enrich refrigerant molecules in low-concentration leak areas, making it difficult to achieve rapid and accurate leak point location. To address this, we propose a refrigerant leak detection device for air conditioning maintenance. Utility Model Content

[0005] To solve the above problems, this utility model provides the following technical solution: a refrigerant leak detection device for air conditioner maintenance, comprising an adsorption head, a universal cable, and a detector body. The detector body is connected to the adsorption head via the universal cable. A through hole is provided at the bottom of the detector body. The adsorption head, the universal cable, the inner cavity of the detector body, and the through hole can form a gas channel. The detector body includes a protective shell, a detection block, a suction fan, and an electrostatic generator with short-circuit and overload protection functions. The electrostatic generator is electrically connected to the adsorption head. The detection block and the suction fan are sequentially arranged between the adsorption head and the through hole. The suction fan faces the adsorption head to draw gas into the gas channel.

[0006] Preferably, the adsorption head is made of aluminum alloy, and the outer wall of the adsorption head is coated with an insulating antistatic coating.

[0007] Preferably, the lower part of the inner wall of the adsorption head is provided with an annular groove, and the grooved part of the annular groove faces the opening of the adsorption head.

[0008] Preferably, the front of the detector body is provided with a display and buttons, with the display positioned above the buttons.

[0009] Preferably, the side walls of the detector body are provided with anti-slip grooves.

[0010] Preferably, the surface of the detector body is provided with an anti-slip coating, which is made of rubber.

[0011] Compared with existing technologies, the advantages of this invention are as follows: by combining the electrostatic generator and the adsorption head, an electrostatic field is generated in the area to be detected, which can actively adsorb and enrich the low-concentration refrigerant molecules of micro-leaks. Then, the molecules are drawn to the detection block by the suction fan for precise analysis, which improves the detection sensitivity and response speed. This solves the problems of low detection efficiency and easy missed detection of micro-leaks by traditional negative pressure suction leak detectors. At the same time, the electrostatic generator with short circuit and overload protection functions, the insulating antistatic coating, and the design of the anti-slip groove and anti-slip coating ensure the electrical safety and operational safety of the device, and realize the rapid and accurate location of refrigerant leak points. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0014] Figure 2This is a cross-sectional structural diagram of the main body of the detector of this utility model;

[0015] Figure 3 This is a three-dimensional cross-sectional structural diagram of the adsorption head part of this utility model.

[0016] In the diagram: 1. Adsorption head; 2. Universal cable; 3. Main body of the detector; 4. Through hole; 5. Protective shell; 6. Detection block; 7. Suction fan; 8. Static generator; 9. Annular groove; 10. Display; 11. Button; 12. Anti-slip groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1 As shown, the refrigerant leak detection device for air conditioner maintenance in this embodiment includes an adsorption head 1, a universal cable 2, and a detector body 3. The detector body 3 is connected to the adsorption head 1 through the universal cable 2. A through hole 4 is provided at the bottom of the detector body 3. The adsorption head 1, the universal cable 2, the inner cavity of the detector body 3, and the through hole 4 can form a gas channel. The detector body 3 includes a protective shell 5, a detection block 6, an air intake fan 7, and an electrostatic generator 8 with short circuit and overload protection functions. The electrostatic generator 8 is electrically connected to the adsorption head 1. The detection block 6 and the air intake fan 7 are arranged sequentially between the adsorption head 1 and the through hole 4. The air intake fan 7 generates a stable airflow, facing the adsorption head 1 to draw the gas into the gas channel.

[0019] The adsorption head 1 is made of aluminum alloy, and the outer wall of the adsorption head 1 is coated with an insulating antistatic coating.

[0020] The lower part of the inner wall of the adsorption head 1 is provided with an annular groove 9. The grooved part of the annular groove 9 faces the opening of the adsorption head 1. The electrostatic field at the opening of the adsorption head 1 first polarizes and attracts extremely small substances from a certain distance, causing them to adhere to the annular groove 9 structure on the inner wall of the adsorption head, thus achieving preliminary enrichment.

[0021] The front of the main body 3 of the detector is equipped with a display 10 and a button 11, with the display 10 positioned above the button 11.

[0022] The side walls of the main body 3 of the detector are provided with anti-slip grooves 12.

[0023] The surface of the main body 3 of the detector is provided with an anti-slip coating, which is made of rubber.

[0024] The electrostatic generator 8 is not for adsorbing large amounts of dust, but to create a strong electrostatic field for the adsorption head 1, giving it an instantaneous dipole moment, making it easier for the sensor in the detection block 6 to identify. This is the key to improving detection sensitivity. In addition, the electrostatic field can also polarize the leaked refrigerant gas molecules, strongly adsorbing extremely small particles in the air that adsorb or contain leaked refrigerant molecules.

[0025] The working principle of this utility model is as follows: When performing refrigerant leak detection on an air conditioner, the operator holds the anti-slip groove 12 on the main body 3 of the detector and inserts the adsorption head 1 into the detection position. After the device is started, the electrostatic generator 8 first applies a high-voltage electrostatic field to the adsorption head 1, forming a strong electric field region at the opening of the adsorption head 1. When there is a refrigerant leak, the leaking gas molecules and attached particles are polarized and adsorbed under the action of the electrostatic field and enriched in the annular groove 9 structure on the inner wall of the adsorption head 1. Then, the suction fan 7 is started, forming a directional airflow from the adsorption head 1 to the detection block 6. The enriched gas sample is transported to the detection block 6 through the gas channel formed by the universal wire 2 and the inner cavity of the detector body 3. Finally, the detection block 6 accurately analyzes the gas sample and displays the detection results in real time on the display 10, thereby achieving high-sensitivity detection and rapid location of trace refrigerant leaks.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A refrigerant leak detection device for air conditioner maintenance, characterized in that: The device includes an adsorption head (1), a universal cable (2), and a detector body (3). The detector body (3) is connected to the adsorption head (1) via the universal cable (2). A through hole (4) is provided at the bottom of the detector body (3). The adsorption head (1), the universal cable (2), the inner cavity of the detector body (3), and the through hole (4) can form a gas channel. The detector body (3) includes a protective shell (5), a detection block (6), an air intake fan (7), and an electrostatic generator (8) with short-circuit and overload protection functions. The electrostatic generator (8) is electrically connected to the adsorption head (1). The detection block (6) and the air intake fan (7) are arranged sequentially between the adsorption head (1) and the through hole (4). The air intake fan (7) faces the adsorption head (1) to draw gas into the gas channel.

2. The refrigerant leak detection device for air conditioner maintenance according to claim 1, characterized in that: The adsorption head (1) is made of aluminum alloy and the outer wall of the adsorption head (1) is coated with an insulating antistatic coating.

3. A refrigerant leak detection device for air conditioner maintenance according to claim 2, characterized in that: The lower part of the inner wall of the adsorption head (1) is provided with an annular groove (9), and the groove part of the annular groove (9) faces the opening of the adsorption head (1).

4. A refrigerant leak detection device for air conditioner maintenance according to claim 3, characterized in that: The main body (3) of the detector has a display (10) and a button (11) on the front, with the display (10) positioned above the button (11).

5. A refrigerant leak detection device for air conditioner maintenance according to claim 4, characterized in that: The side walls of the main body (3) of the detector are provided with anti-slip grooves (12).

6. A refrigerant leak detection device for air conditioner maintenance according to claim 5, characterized in that: The surface of the main body (3) of the detector is provided with an anti-slip coating, which is made of rubber.

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