Air conditioner refrigerant pipe blockage detection device

Abstract

The present invention provides an air-conditioning refrigerant pipe blockage detection device, belonging to the technical field of air-conditioning detection. The air-conditioning refrigerant pipe blockage detection device includes a box body, a control component, a clamping component and a connecting component. The clamping component and the connecting component are used for sealing and connecting to both ends of the refrigerant pipe to connect the refrigerant pipe to the device. Two pressure pipes are installed on the side wall of the box body. The connecting component is installed at one end of the pressure pipe. The clamping component is arranged on the outer wall of the connecting component and is used for clamping the connecting component on the pipe wall of the refrigerant pipe. The connecting component includes a connecting pipe. The clamping component clamps the connecting component on the pipe wall of the refrigerant pipe. By directly connecting both ends of the refrigerant pipe to the device and pumping inert gas into the refrigerant pipe, the pressure and flow rate at both ends of the refrigerant pipe change. When the pressure and flow rate at both ends of the refrigerant pipe are not much different, it indicates that the measured refrigerant pipe is not blocked, and the blockage detection can be carried out on the refrigerant pipe without disassembling it.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioner detection, and particularly relates to a detection device for blocking of an air conditioner refrigerant pipe. Background Art

[0002] The air conditioner refrigerant pipe is an important part of the air conditioner system. It includes an evaporator pipe, a condenser pipe, a compressor pipe, an expansion valve pipe, a return air pipe, and a liquid storage pipe, which enables the refrigerant to circulate in the system and plays a crucial role in the refrigeration effect and operation stability of the air conditioner. It is necessary to regularly check whether it is blocked and leaked and maintain it. Blockage of the air conditioner refrigerant pipe is one of the problems that may occur during the operation of the air conditioner system. After the air conditioner refrigerant pipe is blocked, there are significant differences in the pressures on the high-pressure side and the low-pressure side compared with the normal values. There is a large temperature difference between the pipes before and after the blocked part, the system pressure is unbalanced, and the compressor may start and stop frequently or operate abnormally, resulting in a decrease in the refrigeration or heating effect of the air conditioner or even complete failure.

[0003] In a Chinese patent application document with the publication number of CN117847445A, a pipeline blockage detection device and a detection method are disclosed. It includes a bearing plate, and an ultrasonic detector is arranged on the bearing plate; two clamping and walking mechanisms are respectively arranged at both ends of the bearing plate. The clamping and walking mechanism includes two arc-shaped plates. One ends of the two arc-shaped plates are symmetrically hinged on the bearing plate, and the other ends are both provided with first travel wheels.

[0004] For the existing pipeline blockage detection device, generally, ultrasonic waves are used to gradually detect along the pipeline. However, when detecting the blockage of the air conditioner condenser pipe, since some refrigerant pipes are installed in the outdoor unit and the indoor unit of the air conditioner and are not easy to disassemble, ultrasonic waves cannot be used to detect along the pipeline. Summary of the Invention

[0005] The purpose of the present invention is to provide a detection device for blocking of an air conditioner refrigerant pipe, aiming to solve the problem that the existing pipeline blockage detection device cannot gradually perform ultrasonic detection on the refrigerant pipes located in the outdoor unit and the indoor unit of the air conditioner.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A detection device for blocking of an air conditioner refrigerant pipe includes a box body, a control component, a clamping component, and a connection component. The clamping component and the connection component are used for sealing and connecting to both ends of the refrigerant pipe to connect the refrigerant pipe to the device.

[0007] Two pressure pipes are installed on the side wall of the box body. The connection component is installed at one end of the pressure pipe, and the clamping component is arranged on the outer wall of the connection component and is used for clamping the connection component on the pipe wall of the refrigerant pipe.

[0008] The connecting assembly includes a connecting pipe, an open groove is provided on the pipe wall of the connecting pipe along the axial direction of the connecting pipe, and the upper connecting part and the lower connecting part are respectively installed on the two side walls of the open groove. The upper connecting part and the lower connecting part are both arc-shaped plates arranged concentrically with the connecting pipe. The inner wall of one end of the upper connecting part close to the lower connecting part is in conflict with the outer wall of the lower connecting part, and the clamping assembly clamps the connecting assembly on the pipe wall of the refrigerant pipe.

[0009] The effect is that the two ends of the refrigerant pipe are directly connected to the device through the connecting assembly, and the inert gas is pumped into the refrigerant pipe to change the pressure and flow at the two ends of the refrigerant pipe. When the pressure and flow at the two ends of the refrigerant pipe are not much different, it indicates that the refrigerant pipe being tested is not blocked, and the blockage detection can be carried out without disassembling the refrigerant pipe.

[0010] The connecting pipe, the upper connecting part and the lower connecting part are all made of elastic material. As the clamping assembly clamps the connecting assembly, the open groove of the connecting pipe begins to close under the action of the clamping force and drives the upper connecting part and the lower connecting part to move relative to each other along their circumferential direction, thereby reducing the diameter of the connecting pipe and clamping it on the wall of the refrigerant pipe.

[0011] The effect is that the open groove of the connecting pipe begins to close under the action of the clamping piece and drives the inner wall of the upper connecting part and the lower connecting part to move relative to each other along the circumferential direction, thereby reducing the diameter of the connecting pipe and clamping it on the wall of the refrigerant pipe, thereby ensuring the sealing of the refrigerant pipe when it is connected to the device, and further ensuring the accuracy of the blockage detection result.

[0012] The outer wall of the lower connecting part is provided with a limiting sliding groove along its circumference, and the inner wall of the upper connecting part is fixedly provided with a limiting sliding block which is slidably sleeved in the limiting sliding groove.

[0013] The effect is that, by providing the limiting slider and the limiting groove, it is avoided that when the opening groove of the connecting pipe is closed, there is a gap between the contact part of the upper connecting part and the lower connecting part, thereby affecting the sealing of the refrigerant pipe connection.

[0014] The clamping assembly includes a fixed tube, a rotating sleeve and a clamping mechanism. The inner wall of the fixed tube is provided with four mounting grooves along its circumference. The connecting tube is sleeved in the fixed tube and is concentric with the fixed tube. One of the mounting grooves corresponds to the junction of the upper connecting part and the lower connecting part. The clamping mechanism is arranged in the mounting groove for clamping the connecting tube. The rotating sleeve is rotatably sleeved on the outer wall of one end of the fixed tube to drive the clamping mechanism to move.

[0015] The clamping mechanism includes a bidirectional screw, clamping sliders, clamping members, connecting members, hinge members and fixing members. The bidirectional screw is rotatably installed in the installation groove, and the axis of the bidirectional screw is parallel to the axis of the fixed pipe. There are two clamping sliders, which are respectively threadedly sleeved at both ends of the bidirectional screw. There are two fixing members, which are respectively fixedly installed at both ends of the fixed pipe. There are two clamping members, and one ends of the two clamping members are respectively hinged to the two fixing members. There are two connecting members, and one ends of the two connecting members are respectively hinged to the two clamping sliders. The other ends of the two connecting members are respectively hinged to the middle parts of the two clamping members through hinge members.

[0016] A gear is fixedly installed at one end of the bidirectional screw close to the rotating sleeve. An annular groove is formed on the outer wall of the end of the fixed pipe sleeved with the rotating sleeve. The installation groove communicates with the annular groove. An internal gear ring that is rotatably sleeved in the annular groove is fixedly installed on the inner wall of the rotating sleeve. The gear is meshed and connected with the internal gear ring.

[0017] The effect is that it can seal and connect refrigerant pipes of various different models, enabling the device to seal and connect and detect air conditioners of various models and refrigerant pipes with different diameters in the air conditioner, improving the applicability of the device.

[0018] A connector is connected between one side of the clamping assembly and the outer wall of the pressure pipe for installing the clamping assembly onto the pressure pipe.

[0019] Two fixing columns are fixedly installed on the outer wall of the box body where the pressure pipe is installed. The two connecting pipes are respectively slidably sleeved on the two fixing columns.

[0020] The effect is that it avoids dust entering the pressure pipe when the device is not in use, causing blockage of the pressure pipe. At the same time, it avoids the dust in the pressure pipe being easily discharged into the refrigerant pipe when the device is used for detection again, affecting the detection accuracy.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] By directly connecting both ends of the refrigerant pipe to the device through the connection assembly, pumping inert gas into the refrigerant pipe, causing changes in pressure and flow at both ends of the refrigerant pipe. When the pressure and flow at both ends of the refrigerant pipe are not much different, it indicates that the measured refrigerant pipe is not blocked, and the refrigerant pipe can be detected for blockage without disassembling it. At the same time, it can seal and connect refrigerant pipes of various different models, enabling the device to seal and connect and detect air conditioners of various models and refrigerant pipes with different diameters in the air conditioner, improving the applicability of the device. Description of the Drawings

[0023] The drawings are used to provide further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0024] Figure 1 is a schematic structural diagram of the detection device in the present invention;

[0025] Figure 2 is a schematic structural diagram of the pipe orifice connection mechanism in the present invention;

[0026] Figure 3 is a schematic side sectional view of the pipe orifice connection mechanism in the present invention;

[0027] Figure 4 is a schematic structural diagram of the connecting pipe and the clamping assembly in the present invention;

[0028] Figure 5 is a schematic structural diagram of the connecting portion of the connecting pipe in the present invention;

[0029] Figure 6 is a schematic front sectional view of the clamping assembly in the present invention.

[0030] In the figure: 1. Box body; 11. Pressure pipe; 12. Connector; 2. Clamping assembly; 21. Fixed pipe; 211. Annular groove; 22. Rotating sleeve; 221. Internal gear ring; 23. Installation groove; 24. Clamping mechanism; 241. Bi-directional screw; 242. Gear; 243. Clamping slider; 244. Clamping piece; 245. Connecting piece; 246. Hinge piece; 247. Fixed piece; 3. Connecting assembly; 31. Connecting pipe; 32. Upper connecting portion; 33. Lower connecting portion; 34. Limit sliding groove; 35. Limit slider; 4. Control assembly. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1 - 6 , the present invention provides the following technical solutions: An air-conditioning refrigerant pipe blockage detection device, including a box body 1, a clamping assembly 2, a connecting assembly 3, and a control assembly 4. A pressure sensor and a flow sensor for detection and an air pump for pressing inert gas into the refrigerant pipe are provided inside the box body 1. The clamping assembly 2 and the connecting assembly 3 are used to hermetically connect both ends of the refrigerant pipe to connect the refrigerant pipe to the device. The control assembly 4 is installed on the outer wall of the box body 1 and is used to control the device to perform detection.

[0033] Refer to Figures 1 - 3As shown, two pressure pipes 11 are installed on the side wall of the box body 1 and are used to connect to both ends of the refrigerant pipe, so as to introduce the inert gas in the device into the refrigerant pipe. One end of the pressure pipe 11 is connected with a connection component 3 for connecting to the refrigerant pipe. The outer wall of the connection component 3 is provided with a clamping component 2 for clamping the connection component 3 on the pipe wall of the refrigerant pipe. A connection head 12 is connected between one side of the clamping component 2 and the outer wall of the pressure pipe 11, and is used to install the clamping component 2 on the pressure pipe 11.

[0034] Reference Figure 3 and Figure 5 As shown, the connection component 3 includes a connection pipe 31. An opening groove is provided on the pipe wall of the connection pipe 31 along the axis direction of the connection pipe 31. Upper connection parts 32 and lower connection parts 33 are respectively installed on two side walls of the opening groove. Both the upper connection part 32 and the lower connection part 33 are arc-shaped plates concentric with the connection pipe 31. The inner wall of one end of the upper connection part 32 close to the lower connection part 33 abuts against the outer wall of the lower connection part 33. The connection pipe 31, the upper connection part 32 and the lower connection part 33 are all made of elastic materials. The clamping component 2 clamps the connection component 3, so that the opening groove of the connection pipe 31 begins to close under the action of the clamping force and drives the upper connection part 32 and the lower connection part 33 to move relative to each other along their circumferential directions, so that the diameter of the connection pipe 31 becomes smaller and clamps on the pipe wall of the refrigerant pipe.

[0035] A limiting sliding groove 34 is provided on the outer wall of the lower connection part 33 along its circumferential direction, and a limiting sliding block 35 slidably sleeved in the limiting sliding groove 34 is fixedly installed on the inner wall of the upper connection part 32.

[0036] Take down the two connection pipes 31 from the two fixed columns, respectively sleeve them on the outer walls of both ends of the refrigerant pipe, and clamp the connection pipes 31 through the clamping component 2, so that the opening groove of the connection pipe 31 begins to close under the action of the clamping part 244 and drives the inner wall of the upper connection part 32 and the lower connection part 33 to move relative to each other along their circumferential directions, so that the diameter of the connection pipe 31 becomes smaller and clamps on the pipe wall of the refrigerant pipe. Then, control the air pump to work through the control component 4, pump the inert gas into the refrigerant pipe. At the same time, the pressure sensor and the flow sensor start to detect the pressure and flow changes at both ends of the refrigerant pipe. When the pressure and flow at both ends of the refrigerant pipe are not much different, it indicates that the measured refrigerant pipe is not blocked, otherwise it is blocked.

[0037] Reference Figure 3 、 Figure 4 and Figure 6As shown in the figure, the clamping assembly 2 includes a fixed tube 21, a rotating sleeve 22 and a clamping mechanism 24. At least three mounting grooves 23 are formed in the inner wall of the fixed tube 21 along its circumferential direction. In this embodiment, preferably there are 4. The connecting tube 31 is sleeved in the fixed tube 21 and is concentric with the fixed tube 21. One of the mounting grooves 23 corresponds to the junction of the upper connecting portion 32 and the lower connecting portion 33. The clamping mechanism 24 is arranged in the mounting groove 23 for clamping the connecting tube 31. The rotating sleeve 22 is rotatably sleeved on the outer wall of one end of the fixed tube 21 for driving the clamping mechanism 24 to move.

[0038] The clamping mechanism 24 includes a bidirectional screw 241, clamping sliders 243, clamping members 244, connecting members 245, hinge members 246 and fixing members 247. The bidirectional screw 241 is rotatably installed in the mounting groove 23 and the axis of the bidirectional screw 241 is parallel to the axis of the fixed tube 21. There are two clamping sliders 243 which are respectively threadedly sleeved at both ends of the bidirectional screw 241. There are two fixing members 247 which are respectively fixedly installed at both ends of the fixed tube 21. There are two clamping members 244 and one ends of the two clamping members 244 are respectively hinged to the two fixing members 247. There are two connecting members 245 and one ends of the two connecting members 245 are respectively hinged to the two clamping sliders 243. The other ends of the two connecting members 245 are respectively hinged to the middle parts of the two clamping members 244 through the hinge members 246.

[0039] A gear 242 is fixedly installed at one end of the bidirectional screw 241 close to the rotating sleeve 22. An annular groove 211 is formed in the outer wall of the end of the fixed tube 21 sleeved with the rotating sleeve 22. The mounting groove 23 communicates with the annular groove 211. An internal gear ring 221 which is rotatably sleeved in the annular groove 211 is fixedly installed on the inner wall of the rotating sleeve 22. The gear 242 is meshed and connected with the internal gear ring 221.

[0040] Rotate the rotating sleeve 22 to drive the internal gear ring 221 to rotate. Since the gear 242 meshes with the internal gear ring 221, when the internal gear ring 221 rotates, the four gears 242 drive the four bidirectional screws 241 to rotate synchronously. As the bidirectional screws 241 rotate, the two clamping sliders 243 mounted thereon move away from each other. Since one end of the clamping member 244 is hinged to the fixing member 247, one end of the connecting member 245 is hinged to the middle of the clamping member 244 and the other end is hinged to the clamping slider 243. Therefore, as the two clamping sliders 243 move away from each other, the connecting member 245 jacks up one end of the clamping member 244, causing the jacked-up ends of the clamping members 244 on the four clamping mechanisms 24 to squeeze the connecting pipe 31, so that the opening groove of the connecting pipe 31 begins to close under the action of the clamping member 244 and drives the inner wall of the upper connecting portion 32 and the lower connecting portion 33 to move relative to each other in the circumferential direction, thereby reducing the diameter of the connecting pipe 31 and clamping it on the pipe wall of the refrigerant pipe. The device can perform sealed connection on refrigerant pipes of various different models, enabling the device to perform sealed connection and detection on various models of air conditioners and refrigerant pipes with different diameters inside the air conditioner, improving the applicability of the device.

[0041] Two fixing columns are fixedly installed on the outer wall of the box body 1 where the pressure pipe 11 is installed. The two connecting pipes 31 are respectively slidably sleeved on the two fixing columns. After the detection is completed, the two ends of the two connecting pipes 31 connected to the refrigerant pipe are removed and respectively sleeved on the two fixing columns, preventing dust from entering the pressure pipe 11 when the device is not in use, causing blockage of the pressure pipe 11, and at the same time avoiding discharging the dust in the pressure pipe 11 into the refrigerant pipe when the device is used for detection again, which affects the detection accuracy.

[0042] The implementation principle of the embodiment of the present invention is as follows: When detecting the refrigerant pipe, the two connecting pipes 31 are removed from the two fixing columns and respectively sleeved on the outer walls of both ends of the refrigerant pipe. Rotate the rotating sleeve 22 to drive the internal gear ring 221 to rotate. Since the gear 242 meshes with the internal gear ring 221, when the internal gear ring 221 rotates, the four gears 242 drive the four bidirectional screws 241 to rotate synchronously. As the bidirectional screws 241 rotate, the two clamping sliders 243 mounted thereon move away from each other. Since one end of the clamping member 244 is hinged to the fixing member 247, one end of the connecting member 245 is hinged to the middle of the clamping member 244, and the other end is hinged to the clamping slider 243. Therefore, as the two clamping sliders 243 move away from each other, the connecting member 245 jacks up one end of the clamping member 244, causing the jacked-up ends of the clamping members 244 on the four clamping mechanisms 24 to squeeze the connecting pipe 31, so that the opening groove of the connecting pipe 31 begins to close under the action of the clamping member 244 and drives the upper connecting portion 32 and the lower connecting portion 33 to move relative to each other along their circumferential directions, thereby reducing the diameter of the connecting pipe 31 and clamping it on the pipe wall of the refrigerant pipe. Then, the control component 4 is used to control the air pump to work, and the inert gas is pumped into the refrigerant pipe. At the same time, the pressure sensor and the flow sensor start to detect the pressure and flow changes at both ends of the refrigerant pipe. When the pressure and flow at both ends of the refrigerant pipe are not much different, it indicates that the measured refrigerant pipe is not blocked; otherwise, it is blocked. At the same time, the device can perform sealed connection on various different models of refrigerant pipes, enabling the device to perform sealed connection and detection on various models of air conditioners and refrigerant pipes with different diameters inside the air conditioner, improving the applicability of the device.

[0043] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An air conditioning refrigerant pipe blockage detection device, comprising a housing and a control component, characterized in that: It also includes a clamping assembly and a connecting assembly, which are used to be sealed and connected to both ends of the refrigerant pipe to connect the refrigerant pipe to the detection device; Two pressure pipes are installed on the side wall of the box body, the connecting assembly is installed on one end of the pressure pipe, and the clamping assembly is arranged on the outer wall of the connecting assembly to clamp the connecting assembly on the pipe wall of the refrigerant pipe; The connection assembly includes a connection pipe, an open groove is provided on the pipe wall of the connection pipe along the axial direction of the connection pipe, an upper connection part and a lower connection part are respectively installed on two side walls of the open groove, and both the upper connection part and the lower connection part are arc-shaped plates arranged concentrically with the connection pipe, and the inner wall of one end of the upper connection part close to the lower connection part conflicts with the outer wall of the lower connection part, and the clamping assembly clamps the connection assembly on the pipe wall of the refrigerant pipe; The clamping assembly includes a fixed tube, a rotating sleeve and a clamping mechanism. The inner wall of the fixed tube is provided with four mounting grooves along its circumference. The connecting tube is sleeved in the fixed tube and is concentric with the fixed tube. One of the mounting grooves corresponds to the junction of the upper connecting part and the lower connecting part. The clamping mechanism is arranged in the mounting groove for clamping the connecting tube. The rotating sleeve is rotatably sleeved on the outer wall of one end of the fixed tube for driving the clamping mechanism to move. The clamping mechanism includes a bidirectional screw, a clamping slider, a clamping piece, a connecting piece, a hinge and a fixing piece. The bidirectional screw is rotatably installed in the installation groove and the axis of the bidirectional screw is parallel to the axis of the fixing tube. There are two clamping sliders and they are respectively threadedly sleeved on the two ends of the bidirectional screw. There are two fixing pieces and they are respectively fixedly installed on the two ends of the fixing tube. There are two clamping pieces and one end of the two clamping pieces is respectively hinged to the two fixing pieces. There are two connecting pieces and one end of the two connecting pieces is respectively hinged to the two clamping sliders. The other ends of the two connecting pieces are respectively hinged to the middle parts of the two clamping pieces through hinges. A gear is fixedly installed on one end of the bidirectional screw near the rotating sleeve, an annular groove is opened on the outer wall of one end of the fixed tube sleeve connected to the rotating sleeve, the installation groove is communicated with the annular groove, an inner gear ring is fixedly installed on the inner wall of the rotating sleeve and the rotating sleeve is connected in the annular groove, and the gear and the inner gear ring are meshed and connected with each other.

2. The air conditioning refrigerant pipe blockage detection device according to claim 1, characterized in that: The connecting pipe, the upper connecting part and the lower connecting part are all made of elastic material. As the clamping assembly clamps the connecting assembly, the open groove of the connecting pipe begins to close under the action of the clamping force and drives the upper connecting part and the lower connecting part to move relative to each other along their circumferential direction, thereby reducing the diameter of the connecting pipe and clamping it on the wall of the refrigerant pipe.

3. The air conditioning refrigerant pipe blockage detection device according to claim 2, characterized in that: The outer wall of the lower connecting part is provided with a limiting sliding groove along its circumference, and the inner wall of the upper connecting part is fixedly provided with a limiting sliding block which is slidably sleeved in the limiting sliding groove.

4. The air conditioning refrigerant pipe blockage detection device according to claim 1, characterized in that: A connector is connected between one side of the clamping assembly and the outer wall of the pressure pipe, and is used to install the clamping assembly on the pressure pipe.

5. The air conditioning refrigerant pipe blockage detection device according to claim 1, characterized in that: Two fixing columns are fixedly installed on the outer wall of the box body on which the pressure pipe is installed, and two connecting pipes are respectively slidably sleeved on the two fixing columns.

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