Water flow switch detection counterweight device and water flow switch detection counterweight method

Abstract

The invention provides a water flow switch detection counterweight device and a water flow switch detection counterweight method. The water flow switch detection counterweight device comprises a counterweight block; the connecting piece is detachably connected to one end of the balancing weight; the hook is arranged at one end, far away from the balancing weight, of the connecting piece, the hook extends into the pipeline and is in lap joint with a target piece of the water flow switch during detection, and the connecting piece inclines downwards under the dead weight and abuts against the lower edge of a pipe opening of the pipeline so as to hook the target piece to simulate a water flow signal. The device can simulate a water flow signal under the condition that water and large-flow gas do not need to be introduced, and the target piece is kept to be triggered in the detection process so as to stably detect the on-off state of the water flow switch. As large air flow does not need to be introduced, noise in the water flow switch detection process can be greatly reduced, noise diagnosis and detection of testers on other parts of the air conditioner in the test process are prevented from being influenced, faults of missing detection of other noise are prevented, and quality control observation in the air conditioner production process is guaranteed. In addition, the device also reduces the production and detection cost of the air conditioner.

Description

Technical Field

[0001] This invention relates to the field of water flow switch detection technology, and in particular to a water flow switch detection counterweight device and a water flow switch detection counterweight method. Background Technology

[0002] A flow switch is a key component in an air conditioning piping system, typically used to detect the water flow rate in the refrigeration system piping to ensure normal system operation. Water flow or air flow detection are two commonly used methods in air conditioning systems to simulate water flow signals in the piping to detect the flow switch's status.

[0003] However, for water flow testing, the extended dehydration process after testing increases air conditioning testing costs and reduces production efficiency. Air flow testing is suitable for small-diameter pipes because a small air volume is sufficient to effectively detect the water flow switch status. Furthermore, the smaller inner diameter of small-diameter pipes results in relatively low noise from the flow of small volumes of gas during testing. However, for large-diameter pipes, increasing the air flow rate may be necessary to effectively detect the water flow switch status. Because of the larger inner diameter of large-diameter pipes, the same amount of gas will generate more noise than in small-diameter pipes. Therefore, increasing the air flow rate leads to a significant increase in noise, which in turn affects the tester's ability to diagnose and detect noise issues in other air conditioning components, potentially causing missed noise faults and negatively impacting air conditioning production and quality control. In addition, increased air flow rate leads to a simultaneous increase in machine power and energy consumption, further increasing air conditioning production and testing costs. Summary of the Invention

[0004] This invention proposes a counterweight device and method for detecting water flow switches, in order to solve the technical problems of high noise and low efficiency in traditional water flow switch detection for air conditioning pipelines.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0006] This invention provides a water flow switch detection counterweight device, comprising:

[0007] Counterweight;

[0008] A connector is detachably attached to one end of the counterweight.

[0009] The hook is located at the end of the connector furthest from the counterweight.

[0010] During testing, the hook is inserted into the pipeline and overlaps the target plate of the flow switch. The connector tilts downward under its own weight and abuts against the lower edge of the pipeline opening to hook the target plate and simulate a water flow signal.

[0011] Preferably, the connector is a hollow tube.

[0012] Preferably, the hook is formed by bending the end of a hollow tube away from the counterweight.

[0013] Preferably, the hook includes:

[0014] The arc segment is semi-circular in shape, with one end of the arc segment connected to the end of the hollow tube furthest from the counterweight.

[0015] The straight section is rod-shaped, with one end connected to the other end of the curved section relative to the hollow tube.

[0016] Preferably, the radius of the arc segment is 10mm, the length of the straight segment is 5mm, and the length of the hollow tube is 390mm.

[0017] Preferably, the hollow tube is cylindrical, with an outer diameter of 3 mm and an inner diameter of 1.8 mm.

[0018] Preferably, the counterweight is cylindrical, and a hollow tube is coaxially connected to one end of the counterweight.

[0019] Preferably, the axial length of the counterweight is 48mm and the diameter of the counterweight is 25mm.

[0020] Preferably, the connector is threaded to one end of the counterweight.

[0021] Preferably, the hollow tube is a copper tube.

[0022] The present invention also provides a method for detecting the counterweight of a water flow switch, which utilizes the above-mentioned water flow switch detection counterweight device. The water flow switch detection method includes the following steps:

[0023] S1: Insert the hook into the pipe and attach it to the target plate of the water flow switch inside the pipe. The connector without the counterweight will tilt downward under its own weight and abut against the lower edge of the pipe opening to hook the target plate and realize the simulated water flow signal.

[0024] S2: Measure the angle θ formed between the connector and the horizontal plane;

[0025] S3: Substitute the pulling force f, which enables the flow switch to be turned on and acts vertically downward on the target plate, into the following formula: m = Calculate the minimum weight m of the counterweight that will turn on the flow switch;

[0026] S4: Select a counterweight with a weight greater than or equal to m and connect it to the connector to turn on the water flow switch and start the test.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The water flow switch detection counterweight device provided by this invention can simulate water flow signals without the need for water or high-flow-rate gas, and maintain the trigger target during the detection process to stably detect the on / off state of the water flow switch. Since a large airflow is not required, the noise during the water flow switch detection process is significantly reduced, thus avoiding interference with the tester's noise diagnosis and detection of other air conditioner components, preventing missed detection of other noise issues, and ensuring quality control observation during the air conditioner production process. This device also reduces air conditioner production and testing costs. Attached Figure Description

[0029] To more clearly illustrate the technical solution proposed by this invention, the invention will be described in detail below with reference to embodiments and accompanying drawings. It should be understood that the embodiments and drawings described in the following detailed description and specification are merely some embodiments of this invention, and those skilled in the art can make changes to these drawings within the framework of this invention.

[0030] Figure 1 This is a front view of an embodiment of the water flow switch detection counterweight device of the present invention;

[0031] Figure 2 This is a top view of an embodiment of the water flow switch detection counterweight device of the present invention;

[0032] Figure 3 This is a side view of an embodiment of the water flow switch detection counterweight device of the present invention;

[0033] Figure 4 This is a schematic front view of an embodiment of the water flow switch detection counterweight device of the present invention;

[0034] Figure 5 This is a three-dimensional structural diagram of the water flow switch detection counterweight device of the present invention applied to pipeline detection and concealing the pipeline;

[0035] Figure 6 This is a front view schematic diagram of the water flow switch detection counterweight device of the present invention applied to pipeline detection;

[0036] Figure 7 This is a top view schematic diagram of the water flow switch detection counterweight device of the present invention applied to pipeline detection;

[0037] Figure 8 The water flow switch detection counterweight device of the present invention is along Figure 7 A schematic diagram of the cross-sectional structure along the AA direction;

[0038] Figure 9 The water flow switch detection counterweight device of the present invention is along Figure 4 A schematic diagram of the cross-sectional structure along the BB direction;

[0039] Figure 10 This is a side view of the water flow switch detection counterweight device of the present invention applied to pipeline detection.

[0040] The main markings in the attached figures are as follows:

[0041] 1. Counterweight;

[0042] 2. Connecting parts;

[0043] 3. Hook; 31. Curved section; 32. Straight section;

[0044] 4. Pipeline; 41. Pipe opening;

[0045] 5. Flow switch; 51. Target plate. Detailed Implementation

[0046] To make the technical problem to be solved, the technical solution and the beneficial effects of the present invention clearer, the following description is provided in conjunction with the appendix. Figure 1-10 The present invention will be further described in detail below with reference to the embodiments.

[0047] Please refer to the following: Figure 1-10 The water flow switch 5 detection counterweight device provided by the present invention includes:

[0048] Counterweight 1;

[0049] Connector 2 is detachably connected to one end of counterweight 1;

[0050] Hook 3 is located at the end of connector 2 furthest from counterweight 1.

[0051] When testing the flow switch 5, the hook 3 extends into the pipe 4 and overlaps the target plate 51 of the flow switch 5. The connector 2 tilts downward under its own weight and abuts against the lower edge of the pipe opening 41 of the pipe 4 to hook the target plate 51 and realize the simulated water flow signal.

[0052] The counterweight device for detecting the water flow switch 5 provided by this invention can simulate water flow signals without the need for water or high-flow-rate gas, and maintain the trigger target 51 during the detection process to stably detect the on / off state of the water flow switch 5. Since a large airflow is not required, the noise during the detection process of the water flow switch 5 is significantly reduced. Actual testing has shown that the noise level during the detection process can be reduced to below 75 decibels, thereby avoiding interference with the tester's noise diagnosis and detection of other air conditioning components, preventing the omission of other noise malfunctions, and ensuring quality control observation during the air conditioning production process. Furthermore, this device also reduces the production and testing costs of air conditioning systems.

[0053] Furthermore, the counterweight detection device for the water flow switch 5 provided by the present invention, through its ingenious mechanical design, enables the weight of the counterweight block 1 to be accurately transmitted to the target plate 51 of the water flow switch 5, thereby realizing reliable simulated water flow signal operation to reliably detect the on / off state of the water flow switch 5, and stably cooperating with the water flow switch 5 detection device for online testing.

[0054] Meanwhile, the counterweight detection device for the water flow switch 5 provided by this invention takes into account the ease of installation. The testing personnel can easily install it on the water flow switch 5 without special tools or professional knowledge.

[0055] Please refer to the following: Figure 1-4 In one embodiment of the water flow switch 5 detection counterweight device provided by the present invention, the connecting member 2 is a hollow tube.

[0056] Please refer to the following: Figure 1-4 In one embodiment of the water flow switch 5 detection counterweight device provided by the present invention, the hook 3 is formed by bending the end of the hollow tube (connector 2) away from the counterweight 1, that is, the hook 3 and the hollow tube (connector 2) are integrally formed, and the outer diameter and inner diameter of the arc section 31 and the straight section 32 are equal to the outer diameter and inner diameter of the hollow tube (connector 2).

[0057] Please refer to the following: Figure 1-4 In a preferred embodiment of the water flow switch 5 counterweight detection device provided by the present invention, the hook 3 includes:

[0058] Arc segment 31, which is semi-circular, with one end connected to the end of the hollow tube (connector 2) away from the counterweight 1;

[0059] The straight section 32 is rod-shaped, with one end connected to the other end of the arc segment relative to the hollow tube (connector 2). The straight section 32 is arranged parallel to the hollow tube (connector 2).

[0060] The hollow tube (connector 2), the arc-shaped section 31 and the straight section 32 form a U-shaped hook structure to firmly hook the target piece 51.

[0061] Please refer to the following: Figure 1-4 In a more preferred embodiment of the water flow switch 5 detection counterweight device provided by the present invention, the hollow tube is cylindrical, the outer diameter of the hollow tube is 3mm, and the inner diameter of the hollow tube (connector 2) is 1.8mm.

[0062] Please refer to the following: Figure 1-4 In a preferred embodiment of the water flow switch 5 detection counterweight device provided by the present invention, the radius of the arc segment 31 is 10mm, the length of the straight segment 32 is 5mm, and the length of the hollow tube is 390mm.

[0063] In other embodiments of the water flow switch 5 detection counterweight device provided by the present invention, the connecting member 2 can also be a solid connecting rod.

[0064] In one embodiment of the counterweight detection device of the water flow switch 5 provided by the present invention, the counterweight block 1 is cylindrical, and a hollow tube is coaxially connected to one end of the counterweight block 1.

[0065] Please refer to the following: Figure 1-4 In a preferred embodiment of the counterweight detection device for the water flow switch 5 provided by the present invention, the axial length of the counterweight 1 is 48mm and the diameter of the counterweight 1 is 25mm.

[0066] In a preferred embodiment of the water flow switch 5 counterweight detection device provided by the present invention, the connector 2 is threaded (detachably connected by a threaded structure) to one end of the counterweight 1, which facilitates the free combination of connectors 2 and counterweights 1 of different sizes and types.

[0067] In a preferred embodiment of the water flow switch 5 counterweight detection device provided by the present invention, the mating end of the connector 2 and the counterweight 1 is provided with an external thread, and the mating end of the counterweight 1 and the connector 2 is provided with an internal thread that matches the external thread.

[0068] In other embodiments of the counterweight detection device of the water flow switch 5 provided by the present invention, the connector 2 can also be detachably connected to one end of the counterweight block 1 through a snap-fit ​​structure or other connection structure.

[0069] In a preferred embodiment of the water flow switch 5 detection counterweight device provided by the present invention, the hollow tube (connector 2) is a copper tube.

[0070] In other embodiments of the water flow switch 5 detection counterweight device provided by the present invention, the hollow tube (connector 2) may also be made of iron or other metals or alloys.

[0071] In a preferred embodiment of the counterweight detection device for the water flow switch 5 provided by the present invention, the counterweight block 1 can be made of iron, copper, lead or other metals or alloys. Under the transmission of the hollow tube (connector 2), it can provide a stable force to the target plate 51 of the water flow switch 5, so that the on and off of the target plate 51 type water flow switch 5 is more stable, and the detection misoperation caused by the unstable counterweight force is reduced.

[0072] In addition, the use of copper tubing and iron / copper counterweights can reduce the material cost of the device while maintaining its performance.

[0073] Please refer to the following: Figure 4-10In one embodiment of the counterweight detection device for the water flow switch 5 provided by the present invention, the minimum pulling force required for the water flow switch 5 to be turned on, acting on the target plate 51 and in a vertically downward direction is f. The mass of the counterweight 1 is m, and it is known that G=mg. The hook 3 is inserted into the pipe 4 and attached to the target plate 51 of the water flow switch 5 inside the pipe 4. The connecting piece 2, which is not connected to the counterweight 1, tilts downward under its own weight and abuts against the lower edge of the pipe opening 41 of the pipe 4 to hook the target plate 51. At this time, the angle θ formed between the connecting piece 2 and the horizontal plane can be directly measured.

[0074] In summary, assuming that the tension force transmitted by the counterweight 1 to the target plate 51 through the connector 2 is F, the mass m of the counterweight 1 can be calculated according to the following set of equations:

[0075] F= ;

[0076] G = mg;

[0077] F·sinθ=mg;

[0078] F = mg / sinθ = G / sinθ.

[0079] In summary, it can be deduced that:

[0080] (1) m= .

[0081] Please refer to the following: Figure 4-10 In a preferred embodiment of the water flow switch 5 detection counterweight device provided by the present invention, the minimum pulling force required for the water flow switch 5 to be turned on, acting on the target plate 51 and in a vertically downward direction is 1N, and the minimum pulling force f is slightly greater than 1N, i.e., 1.2N, with an included angle θ=30 degrees. Substituting f=1.2N and g=10m / s2 into the above formula (1), we can obtain:

[0082] m= 69.3 (g).

[0083] Therefore, the water flow switch 5 detection counterweight device provided by the present invention has high adaptability and versatility, and can be applied to target plate 51 type water flow switches 5 of different sizes, specifications, models and brands, thus expanding the application range of the device.

[0084] Furthermore, the counterweight detection device for the water flow switch 5 provided by the invention can calculate the required mass of the counterweight block 1 by measuring the included angle θ according to the minimum opening pull value required by different water flow switches 5. By adopting a variable mass counterweight block 1, it can be flexibly matched to the target plate 51 type water flow switch 5 with different pull requirements, so that the device has a wide range of applications.

[0085] Please refer to the following: Figure 4-10 The present invention also provides a method for detecting the counterweight of a water flow switch 5, which utilizes the aforementioned water flow switch 5 detection counterweight device. The method for detecting the water flow switch 5 includes the following steps:

[0086] S1: Insert the hook 3 into the pipe 4 and attach it to the target plate 51 of the water flow switch 5 inside the pipe 4, so that the connector 2, which is not connected to the counterweight 1, tilts downward under its own weight and abuts against the lower edge of the pipe opening 41 of the pipe 4, so as to hook the target plate 51 to realize the simulated water flow signal.

[0087] S2: Measure the angle θ formed between connector 2 and the horizontal plane;

[0088] S3: Substitute the pulling force f, which enables the water flow switch 5 to turn on and acts vertically downward on the target plate 51, into the following formula: m = Calculate the minimum weight m of counterweight 1 that can turn on the flow switch 5;

[0089] S4: Select a counterweight 1 with a weight greater than or equal to m and connect it to the connector 2 to turn on the water flow switch 5 and start the test.

[0090] The method for detecting counterweights in the water flow switch 5 provided by this invention is simple and easy to use, and can significantly improve the efficiency of testing.

[0091] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art should understand that any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A counterweight detection device for a water flow switch, characterized in that, include: Counterweight (1); The connector (2) is detachably connected to one end of the counterweight (1); The hook (3) is located at the end of the connector (2) away from the counterweight (1). During testing, the hook (3) extends into the pipe (4) and connects to the target plate (51) of the water flow switch (5). The connector (2) tilts downward under its own weight and abuts against the lower edge of the pipe opening (41) of the pipe (4) to hook the target plate (51) and realize the simulated water flow signal.

2. The water flow switch detection counterweight device as described in claim 1, characterized in that, The connector (2) is a hollow tube.

3. The water flow switch detection counterweight device as described in claim 2, characterized in that, The hook (3) is formed by bending the end of the hollow tube away from the counterweight (1).

4. The water flow switch detection counterweight device as described in claim 2, characterized in that, The hook (3) includes: Arc segment (31), the arc segment (31) is semi-circular, one end of the arc segment is connected to the end of the hollow tube away from the counterweight (1); The straight section (32) is rod-shaped, with one end of the straight section (32) connected to the other end of the arc section relative to the hollow tube.

5. The water flow switch detection counterweight device as described in claim 4, characterized in that, The radius of the arc segment (31) is 10 mm, the length of the straight segment (32) is 5 mm, and the length of the hollow tube is 390 mm.

6. The water flow switch detection counterweight device as described in claim 4, characterized in that, The hollow tube is cylindrical, with an outer diameter of 3 mm and an inner diameter of 1.8 mm.

7. The water flow switch detection counterweight device as described in any one of claims 2-6, characterized in that, The counterweight (1) is cylindrical, and the hollow tube is coaxially connected to one end of the counterweight (1).

8. The water flow switch detection counterweight device as described in claim 7, characterized in that, The axial length of the counterweight (1) is 48mm, and the diameter of the counterweight (1) is 25mm.

9. The water flow switch detection counterweight device as described in any one of claims 1-6, characterized in that, The connector (2) is threaded to one end of the counterweight (1).

10. The water flow switch detection counterweight device as described in any one of claims 2-6, characterized in that, The hollow tube is a copper tube.

11. A method for detecting the counterweight of a water flow switch, using the water flow switch detection counterweight device as described in any one of claims 1-10, wherein the water flow switch (5) detection method includes the following steps: S1: Insert the hook (3) into the pipe (4) and attach it to the target plate (51) of the water flow switch (5) inside the pipe (4), so that the connector (2) that is not connected to the counterweight (1) tilts downward under its own weight and abuts against the lower edge of the pipe opening (41) of the pipe (4) to hook the target plate (51) to realize the simulated water flow signal; S2: Measure the angle θ formed between the connector (2) and the horizontal plane; S3: Substitute the pulling force f, which enables the water flow switch (5) to turn on and acts on the target plate (51) in a vertically downward direction, into the following formula: m = Calculate the minimum weight m that the counterweight (1) can turn on the water flow switch (5); S4: Select a counterweight (1) with a weight greater than or equal to m and connect it to the connector (2) so that the water flow switch (5) is turned on and the test begins.

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