Heat pump heat exchanger copper pipe cleaning device and heat exchanger

Abstract

The invention discloses a heat pump heat exchanger copper pipe cleaning device and a heat exchanger, and relates to the technical field of air conditioner heat exchangers, in particular to the technical field of air conditioner heat exchanger cleaning. A heat pump heat exchanger copper pipe cleaning device comprises an I-shaped guide rail, a pull rod and descaling support arms, descaling support arm connecting grooves are formed in the two sides of the I-shaped guide rail, connecting parts matched with the descaling support arm connecting grooves in shape are arranged at the ends of one sides of the descaling support arms, and the descaling support arms are symmetrically arranged on the two sides of the I-shaped guide rail through the connecting parts. A heat exchanger comprises a heat exchanger shell and a U-shaped copper pipe, the heat pump heat exchanger copper pipe cleaning device is used, the I-shaped guide rail is arranged in an opening of the U-shaped copper pipe of the heat exchanger, and the descaling supporting arm is connected to a straight pipe of the U-shaped copper pipe in a sleeved mode. According to the technical scheme, scale attached to the surface of the heat exchanger copper pipe is removed in a mechanical mode, a cleaning agent does not need to be added to soak the copper pipe during scale removal, and damage of the cleaning agent to a copper pipe oxidation layer can be reduced or avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioner heat exchanger, in particular to the technical field of air conditioner heat exchanger cleaning, and more particularly to a heat pump heat exchanger copper pipe cleaning device and heat exchanger. BACKGROUND

[0002] The water side heat exchanger is one of the main components of the heat pump, which is used for cold and heat exchange between refrigerant and indoor terminal circulating water. Since the temperature of the heat exchange copper pipe is high, it catalyzes the chemical reaction of the sediment in the water, so that the copper pipe surface in the shell and tube heat exchanger is prone to scale deposition. The scale attached to the surface of the copper pipe affects the heat exchange efficiency and is prone to corrosion of the pipe wall, so it is necessary to clean the scale attached to the surface.

[0003] In the current application scenario, the scale is usually soaked and washed with weak acid solvents such as acetic acid and citric acid. When the weak acid solution is used to wash the scale, the copper pipe is inside the heat exchanger, so the reaction degree of the scale and the weak acid solvent cannot be directly observed, and the cleaning degree cannot be directly grasped, which may result in incomplete reaction and incomplete cleaning. At the same time, the scale has a certain adhesion on the copper pipe, and the water flow impact force cannot completely remove the scale.

[0004] In addition, although the weak acid solvent is not easy to react with copper, it can damage the oxide layer on the surface of the copper pipe. After the oxide layer is damaged, the copper pipe is prone to corrosion, which may cause refrigerant leakage, water inlet into the fluorine path, and damage to the equipment.

[0005] Therefore, there is a need for a heat pump heat exchanger copper pipe cleaning device that can remove the scale on the copper pipe of the heat exchanger by mechanical means, instead of soaking and washing the scale with a solvent, to reduce or avoid damage to the oxide layer of the copper pipe by the solvent, and to grasp the cleaning degree of the scale on the copper pipe. SUMMARY

[0006] The main purpose of the present application is to provide a heat pump heat exchanger copper pipe cleaning device and heat exchanger to solve the problem of additional scale removal agent in the prior art when cleaning the copper pipe of the heat pump heat exchanger.

[0007] To achieve the above purpose, the present application provides a heat pump heat exchanger copper pipe cleaning device, which comprises an I-shaped guide rail and scale removal assemblies symmetrically arranged on both sides of the I-shaped guide rail. Each scale removal assembly has the same structure, which comprises a scale removal arm and a pull rod arranged on both sides of the scale removal arm. The I-shaped guide rail is provided with a scale removal arm connecting groove on both sides. One side end of the scale removal arm is provided with a connecting part which is shaped to match the scale removal arm connecting groove. The scale removal arm is installed on the I-shaped guide rail through the connecting part.

[0008] The connecting part and one side end part of each descaling sub-arm of the descaling assembly are provided with a pull rod through hole, one of the two pull rods of each descaling assembly passes through the pull rod through hole of the connecting part of the descaling sub-arm, and the other pull rod passes through the pull rod through hole of the one side end part of the descaling sub-arm relative to the connecting part, and the pull rod is fixedly connected with the descaling sub-arm, and the descaling sub-arm is driven to reciprocate by pulling the pull rod.

[0009] Preferably, the descaling sub-arm connecting groove is a dovetail groove.

[0010] Preferably, a plurality of descaling sub-arms are arranged on each descaling assembly along the length direction of the I-shaped guide rail, and the connecting parts of the plurality of descaling sub-arms are sequentially inserted into the descaling sub-arm connecting grooves.

[0011] Preferably, the end parts of the plurality of pull rods on the same side are provided with pull rings.

[0012] Preferably, the descaling sub-arm is in a strip shape.

[0013] Preferably, a plurality of copper pipe through holes are arranged on the descaling sub-arm along the length direction of the descaling sub-arm.

[0014] Preferably, the front and back sides of the copper pipe through hole are respectively provided with one annular cutting blade.

[0015] In order to achieve the above-mentioned purpose, the application further provides a heat exchanger, which comprises a heat exchanger shell and a copper pipe arranged inside the heat exchanger shell, and uses the heat pump heat exchanger copper pipe cleaning device, the copper pipe is a U-shaped copper pipe, the I-shaped guide rail is arranged in the opening of the U-shaped copper pipe of the heat exchanger, and the descaling sub-arm is sleeved on the straight pipe of the U-shaped copper pipe.

[0016] Preferably, the number of copper pipe through holes on each descaling sub-arm is consistent with the number of U-shaped copper pipes, the copper pipe through holes at the corresponding positions of the plurality of descaling sub-arms of each descaling assembly are collinear, and the straight pipe of the U-shaped copper pipe passes through all the copper pipe through holes at the corresponding collinear positions.

[0017] Preferably, the diameter of each annular cutting blade gradually decreases from the one side end part close to the descaling sub-arm to the one side end part away from the descaling sub-arm, and the one side end part of the annular cutting blade away from the descaling sub-arm is in contact with the copper pipe.

[0018] Compared with the prior art, the application has the following beneficial effects:

[0019] The application drives each descaling sub-arm to reciprocate along the length direction of the straight pipe part of the copper pipe by pulling the pull rod, and realizes mechanical descaling by means of the annular cutting blade on the descaling sub-arm to strip off the scale, so that when the cleaning device provided by the application is used to clean the scale, the copper pipe does not need to be soaked and washed by adding additional descaling agent, and the problem of damage to the copper pipe oxide layer by the solvent can be reduced or avoided.

[0020] The present application can pull the rod traction descaling branch arm reciprocating flow, the reaction copper pipe scale cleaning degree, at the same time, the cleaning device provided by the present application and heat exchanger adopt integrated design, the descaling branch arm of the cleaning device is sleeved on the U-shaped copper pipe, so that the heat exchanger has the descaling function, and the cleaning is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor. In the drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the heat pump heat exchanger copper pipe cleaning device.

[0023] Figure 2 It is Figure 1 The front view.

[0024] Figure 3 It is Figure 1 The rear view.

[0025] Figure 4 It is Figure 1 The top view.

[0026] Figure 5 It is a schematic diagram of the installation of the heat pump heat exchanger copper pipe cleaning device.

[0027] Figure 6 It is Figure 5 The detail enlargement of A area in the above-mentioned drawing.

[0028] Figure 7 It is a schematic diagram of the structure of the heat exchanger.

[0029] Figure 8 It is a schematic diagram of the structure of the annular cutting blade.

[0030] In the above-mentioned drawing, the reference signs are:

[0031] 1, I-shaped guide rail; 11, descaling branch arm connecting groove; 2, descaling assembly; 21, descaling branch arm; 211, connecting part; 212, copper pipe through hole; 213, annular cutting blade; 214, pull rod through hole; 22, pull rod; 221, pull ring; 3, copper pipe; 4, heat exchanger shell. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1

[0034] like Figures 1 to 4 The heat pump heat exchanger copper tube cleaning device shown includes an I-shaped guide rail 1 and descaling components 2 symmetrically arranged on both sides of the I-shaped guide rail 1. Each descaling component 2 has the same structure, including a descaling support arm 21 and pull rods 22 arranged on both sides of the descaling support arm 21. The I-shaped guide rail 1 has descaling support arm connecting grooves 11 on both sides. One end of the descaling support arm 21 has a connecting part 211 that matches the shape of the descaling support arm connecting groove 11. The descaling support arm 21 is installed on the I-shaped guide rail 1 through the connecting part 211. Each descaling component 2 is provided with multiple parallel descaling support arms 21. The connecting parts 211 of each descaling support arm 21 are sequentially inserted into the descaling support arm connecting grooves 11. Each cleaning device is provided with four pull rods 22, which are parallel to each other. Pull rings 221 are provided at the ends of the four pull rods on the same side. The pull rings 221 are used to pull the pull rods 22 to move. The descaling support arm connecting grooves 11 are preferably dovetail grooves.

[0035] Each descaling component 2 has a connecting portion 211 and a pull rod through hole 214 at one end of the descaling support arm 21 relative to the connecting portion 211. Of the two pull rods 22 in each descaling component 2, one pull rod 22 passes through the pull rod through hole 214 at the connecting portion 211 of each descaling support arm 21, and the other pull rod 22 passes through the pull rod through hole 214 at one end of the descaling support arm 21 relative to the connecting portion 211. The pull rod 22 is fixedly connected to the descaling support arm 21. By pulling the pull rod 22, the descaling support arm 21 is moved back and forth along the copper pipe 3 to be cleaned, cleaning the scale adhering to the outer wall of the copper pipe 3. The connecting portion 211 and the pull rod through hole 214 at one end of the descaling support arm 21 of each descaling component 2 are collinear. The end of the pull rod 22 without a pull ring 221 passes through all the collinear pull rod through holes 214 at the corresponding positions.

[0036] Specifically, such as Figure 2 and Figure 3 As shown, the descaling arm 21 is long and narrow.

[0037] Specifically, a plurality of copper pipe through holes 212 are arranged on the length direction of the descaling branch arm 21. The copper pipe 3 to be descaled passes through the copper pipe through hole 212, so that the descaling branch arm 21 can be sleeved on the copper pipe 3 to be descaled. The descaling branch arm 21 is sleeved on the straight pipe portion of the U-shaped copper pipe. The descaling branch arm 21 is pulled on the copper pipe 3 by the pull rod 22 to move back and forth to strip the scale on the copper pipe 3. The degree of scale cleaning is determined by the smoothness of the movement of the descaling branch arm 21 driven by the pull rod 22. The degree of scale cleaning of the copper pipe inside the heat exchanger is determined.

[0038] Specifically, as shown in Figure 4 , the front and back of the copper pipe through hole 212 are respectively provided with one annular cutting blade 213. The two annular cutting blades 213 are symmetrically arranged on both sides of the through hole. The scale attached to the copper pipe 3 is better stripped by the annular cutting blade 213.

[0039] Embodiment 2

[0040] As shown in Figures 5 to 7 , a heat exchanger includes a heat exchanger shell 4 and a copper pipe 3 arranged inside the heat exchanger shell 4. A heat pump heat exchanger copper pipe cleaning device described in embodiment 1 is used. The copper pipe 3 of the heat exchanger is a U-shaped copper pipe 3. The I-shaped guide rail 11 is arranged in the opening of the U-shaped copper pipe 3 of the heat exchanger. The descaling branch arm 21 is sleeved on the straight pipe of the U-shaped copper pipe 3. The straight pipe of the U-shaped copper pipe 3 passes through the copper pipe through hole 212 of the descaling branch arm 21.

[0041] Specifically, as shown in Figure 6 , the number of copper pipe through holes 212 of each descaling branch arm 21 is consistent with the number of U-shaped copper pipes 3. The copper pipe through holes 212 at the corresponding positions of the plurality of descaling branch arms 21 of each descaling assembly 2 are collinear. It is equivalent to that the copper pipe through holes 212 at the corresponding positions of the plurality of descaling branch arms 21 on the same side of the I-shaped guide rail 1 are collinear. The straight pipe of the U-shaped copper pipe 3 passes through all the copper pipe through holes 212 at the corresponding positions which are collinear.

[0042] Specifically, as shown in Figure 4 , the front and back of the copper pipe through hole 212 are respectively provided with one annular cutting blade 213. As shown in Figure 8 , a group of annular cutting blades 213 are symmetrically arranged on each copper pipe through hole 212. The diameter of each annular cutting blade 213 gradually decreases from the side end portion (a) close to the descaling branch arm 21 to the side end portion (b) away from the descaling branch arm 21. The side end portion (b) of the annular cutting blade 213 away from the descaling branch arm 21 is in contact with the copper pipe 3. Since the annular cutting blade 213 is in an inclined state, and the side end portion of the annular cutting blade 213 is in contact with the copper pipe 3, when the descaling branch arm 21 is pulled to move back and forth on the copper pipe 3, the annular cutting blade 213 can better and faster strip the scale and other substances attached to the copper pipe 3.

[0043] Specifically, inside the heat exchanger shell 4, a detachable scale storage box is arranged below the heat pump heat exchanger copper pipe cleaning device, and the top of the storage box is open. The peeled off scale falls into the storage box, facilitating subsequent cleaning of the scale.

[0044] The heat pump heat exchanger copper pipe cleaning device and the heat exchanger provided by the application have the following specific working conditions:

[0045] The I-shaped guide rail 1 of the heat pump heat exchanger copper pipe cleaning device is arranged in the opening of the U-shaped copper pipe 3, and the descaling arm 21 of the heat pump heat exchanger copper pipe cleaning device is sleeved on the straight pipe of the U-shaped copper pipe 3 through the copper pipe through hole 212, so that the heat exchanger is provided with the copper pipe cleaning device. When it is necessary to clean the scale on the outer side of the copper pipe 3, the side plate of the heat exchanger is opened, the pull rod 22 is pulled through the pull ring 221, the descaling arm 21 is driven to reciprocate on the copper pipe 3, and the annular cutting blade 213 on the copper pipe through hole 212 peels off the scale adhered to the copper pipe 3 in the reciprocating movement of the descaling arm 21. With the peeling and falling off of the scale, the movement of the cleaning device on the copper pipe 3 becomes smoother and smoother, and when the movement of the cleaning device is almost unobstructed, the cleaning work of the scale on the copper pipe 3 is completed. The scale on the straight pipe part of the U-shaped copper pipe 3 can be quickly cleaned through the cleaning device, and the scale on the curved part of the U-shaped copper pipe 3 can be cleaned through the cleaning brush after the side plate of the heat exchanger is opened.

[0046] Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples. Changes, modifications, additions or replacements made by those skilled in the art within the scope of the present application should also be within the protection scope of the present application.

Claims

1. A copper tube cleaning device for a heat pump heat exchanger, characterized in that, The device includes an I-shaped guide rail and descaling components symmetrically arranged on both sides of the I-shaped guide rail. Each descaling component has the same structure, including a descaling support arm and a pull rod arranged on both sides of the descaling support arm. The I-shaped guide rail has descaling support arm connecting grooves on both sides. One end of the descaling support arm has a connecting part that matches the shape of the descaling support arm connecting groove. The descaling support arm is installed on the I-shaped guide rail through the connecting part. Each descaling component has a connecting part of the descaling arm and a pull rod through hole on one side of the connecting part. Of the two pull rods of each descaling component, one pull rod passes through the pull rod through hole of the connecting part of the descaling arm, and the other pull rod passes through the pull rod through hole on one side of the descaling arm relative to the connecting part. The pull rods are fixedly connected to the descaling arm, and the descaling arm is moved back and forth by traction pull rods.

2. The heat pump heat exchanger copper tube cleaning device according to claim 1, characterized in that, The descaling support arm connecting groove is a dovetail groove.

3. The heat pump heat exchanger copper tube cleaning device according to claim 1, characterized in that, Each descaling component is equipped with several descaling arms, which are arranged along the length of the I-shaped guide rail. The connecting parts of the multiple descaling arms are inserted into the descaling arm connecting grooves in sequence.

4. A heat pump heat exchanger copper tube cleaning device according to claim 1, characterized in that, A pull ring is provided at one end of the pull rod.

5. A heat pump heat exchanger copper tube cleaning device according to claim 1, characterized in that, The descaling arm is long and narrow.

6. A heat pump heat exchanger copper tube cleaning device according to claim 5, characterized in that, The descaling arm has several copper tube through holes arranged along its length.

7. A heat pump heat exchanger copper tube cleaning device according to claim 6, characterized in that, A ring-shaped cutting blade is provided on both the front and rear sides of the copper tube through hole.

8. A heat exchanger, comprising a heat exchanger shell and copper tubes disposed inside the heat exchanger shell, characterized in that, The heat pump heat exchanger copper tube cleaning device as described in claim 7 is used, wherein the copper tube is a U-shaped copper tube, an I-shaped guide rail is set inside the opening of the U-shaped copper tube of the heat exchanger, and a descaling support arm is sleeved on the straight tube of the U-shaped copper tube.

9. A heat exchanger according to claim 8, characterized in that, The number of copper tube through holes on each descaling arm is the same as the number of U-shaped copper tubes. The copper tube through holes at corresponding positions of multiple descaling arms of each descaling component are collinear, and the straight tube of the U-shaped copper tube passes through all the collinear copper tube through holes at corresponding positions.

10. A heat exchanger according to claim 9, characterized in that, The diameter of each annular cutting blade gradually decreases from the end closest to the descaling arm to the end furthest from the descaling arm, and the end of the annular cutting blade furthest from the descaling arm is in contact with the copper pipe.

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