Heat exchanger cleaning device and cleaning control method, outdoor unit, and air conditioner

Abstract

The present invention provides a heat exchanger cleaning device and cleaning control method, an outdoor unit, and an air conditioner. One type of heat exchanger cleaning device includes a cleaning pipe, a plurality of jet ports are provided on the circumferential side wall of the cleaning pipe, and the plurality of jet ports are spaced apart along the axial direction of the cleaning pipe, and also includes a translation drive mechanism, the translation drive mechanism can drive the cleaning pipe to produce translation, and the translation is in a plane parallel to the air outlet surface of the heat exchanger. According to a heat exchanger cleaning device and cleaning control method, an outdoor unit, and an air conditioner of the present invention, the cleaning pipe can produce translation relative to the heat exchanger, thereby effectively increasing the cleaning range of the heat exchanger, and the cleaning effect of the heat exchanger is better.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioning, and in particular relates to a heat exchanger cleaning device and a cleaning control method, an outdoor unit, and an air conditioner. Background Art

[0002] With the improvement of people's living standards, the use of air conditioners has become widely popular. Since the outdoor unit of the air conditioner is located outdoors, the working environment is diverse and harsh. After long-term use, the outdoor unit will inevitably have serious dirt problems, which will seriously affect the heat exchange effect of the outdoor unit heat exchanger, causing the heat exchange efficiency of the air conditioner to decrease, directly affecting the cooling and heating performance of the whole machine. At present, the outdoor units sold on the market are basically cleaned manually. After using the air conditioner for a few years, users will find that the performance of the air conditioner has seriously declined, and they will seek after-sales maintenance. Among them, many after-sales feedback solutions are to clean the outdoor unit heat exchanger to solve the problem. In order to improve the degree of automation of cleaning the heat exchanger of the air conditioner outdoor unit, two more representative cleaning devices have appeared in the prior art, one is a water washing device that uses a liquid (water or detergent) as a cleaning means, and the other is a gas washing device that uses a gas as a cleaning means. Regardless of the water washing device or the gas washing device, its position relative to the heat exchanger is relatively fixed, and the relatively fixed position is not conducive to the comprehensive cleaning of the heat exchanger. Therefore, in order to be able to clean the heat exchanger as comprehensively as possible, the prior art intends to overcome this problem by arranging multiple groups of spray pipes or spray heads near the heat exchanger. However, this method of increasing the cleaning range by increasing the number of spray pipes or spray heads will undoubtedly greatly increase the production cost of the air conditioner. At the same time, it may also form an obstacle to the heat exchange airflow of the heat exchanger. Based on this deficiency, the present invention is proposed. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to provide a heat exchanger cleaning device and cleaning control method, an outdoor unit, and an air conditioner, wherein the cleaning pipe can produce a linear motion relative to the heat exchanger, thereby effectively increasing the cleaning range of the heat exchanger and achieving a better cleaning effect of the heat exchanger.

[0004] In order to solve the above-mentioned problems, the present invention provides a heat exchanger cleaning device, including a cleaning pipe, a plurality of jet openings are provided on the circumferential side wall of the cleaning pipe, and the plurality of jet openings are arranged at intervals along the axial direction of the cleaning pipe. The device also includes a translation drive mechanism, and the translation drive mechanism can drive the cleaning pipe to produce translation, and the translation is in a plane parallel to the air outlet surface of the heat exchanger.

[0005] Preferably, the translational drive mechanism includes a first slide rail and a fluid pumping component. The first slide rail has a driving hole cavity that runs through it along its length direction. A piston is provided in the driving hole cavity. The piston divides the driving hole cavity into a first cavity and a second cavity. The high-pressure fluid outlet of the fluid pumping component is connected to one of the first cavity and the second cavity to drive the piston to reciprocate along the length direction of the first slide rail. The piston can drive the cleaning tube to follow its translation.

[0006] Preferably, the cleaning pipe is connected to a moving frame, the moving frame is sleeved on the outer peripheral side of the first slide rail, and there is a suction force between the moving frame and the piston.

[0007] Preferably, the moving frame is provided with a first fitting hole, the moving frame is fitted with the first slide rail through the first fitting hole, the first fitting hole is coaxially provided with a first magnetic component, the piston has a second magnetic component, and the magnetism of the first magnetic component is opposite to that of the second magnetic component.

[0008] Preferably, the translational drive structure also includes a reversing valve, which has an inlet, a first outlet, and a second outlet. The inlet is connected to the high-pressure fluid outlet of the fluid pumping component, the first outlet is connected to the first cavity, and the second outlet is connected to the second cavity.

[0009] Preferably, the translational drive structure also includes a second slide rail, the second slide rail has a connecting hole cavity penetrating along its length direction, one end of the connecting hole cavity is connected to the first cavity, and the other end of the connecting hole cavity is connected to the second cavity, and the moving frame is also mounted on the second slide rail.

[0010] Preferably, the translational drive structure further includes a first converter box, the first converter box having a first flow chamber and a second flow chamber, the first flow outlet and the first chamber are connected through the first flow chamber, and the second flow outlet and the connecting hole are connected through the second flow chamber.

[0011] Preferably, the first converter box is located at the end of the first slide rail corresponding to the first cavity.

[0012] Preferably, the translational drive structure further includes a second converter box, the connecting hole cavity and the second cavity are connected through a third flow cavity of the second converter box, and the second converter box is located at the end corresponding to the first slide rail and the second cavity.

[0013] Preferably, the fluid pumping component is an air compression pump.

[0014] Preferably, the translational drive mechanism comprises a fluid distribution valve, and the fluid distribution valve is used to deliver the high-pressure fluid generated by the fluid pumping component to the first cavity or the second cavity of the cleaning pipe and the first slide rail respectively.

[0015] Preferably, a pulse valve is provided between the fluid distribution valve and the cleaning pipe.

[0016] Preferably, the cleaning pipe comprises a first cleaning pipe, the plurality of jet openings of the first cleaning pipe are divided into a first axial jet row and a second axial jet row, and the first axial jet row and the second axial jet row are spaced apart along the circumference of the first cleaning pipe.

[0017] Preferably, the jet openings in the first axial jet row and the jet openings in the second axial jet row are alternately arranged along the axial direction of the first cleaning pipe.

[0018] Preferably, a first angle α is formed between the projections of the fluid injection direction of any jet opening in the first axial jet row and the fluid injection direction of any jet opening in the second axial jet row on any plane perpendicular to the axial direction of the first cleaning pipe, and the angle between the horizontal plane and the line connecting the centers of the inner row of heat exchange tubes and the outer row of heat exchange tubes of the heat exchanger is θ, θ=α / 2.

[0019] Preferably, the cleaning pipe also includes a second cleaning pipe, which is parallel to the first cleaning pipe, and the multiple jet openings of the second cleaning pipe are divided into a third axial jet row and a fourth axial jet row. The third axial jet row and the fourth axial jet row are arranged at intervals along the circumference of the second cleaning pipe, and a second angle β is formed between the projection of the fluid injection direction of any jet opening in the third axial jet row and the fluid injection direction of any jet opening in the fourth axial jet row on any plane perpendicular to the axial direction of the second cleaning pipe, and the bisector of the second angle β is parallel to the bisector of the first angle α, β≠α.

[0020] The present invention also provides an outdoor unit, comprising the above-mentioned heat exchanger cleaning device.

[0021] The present invention also provides an air conditioner, comprising the outdoor unit mentioned above.

[0022] The present invention also provides a heat exchanger cleaning control method, which is used to control the above-mentioned heat exchanger cleaning device to clean the heat exchanger, comprising the following steps:

[0023] Obtaining the real-time speed of the outdoor unit fan and the real-time wind pressure Ps corresponding to the real-time speed;

[0024] Obtaining a preset wind pressure Py corresponding to the real-time rotation speed;

[0025] Obtain the absolute value of the difference between Ps and Py △Ps=|Ps-Py| and the preset wind pressure difference △Py;

[0026] When ΔPs>ΔPy, the cleaning pipe is controlled to spray fluid, and the translation drive mechanism is controlled to drive the cleaning pipe to translate.

[0027] Preferably,

[0028] When ΔPs≤ΔPy, the cleaning pipe is controlled to stop spraying fluid, and the translation drive mechanism is controlled to drive the cleaning pipe to stop translation.

[0029] Preferably,

[0030] When ΔPs≤ΔPy and the translation drive mechanism includes the first converter box or the second converter box, the cleaning pipe is controlled to stop adjacent to the first converter box or the second converter box.

[0031] The present invention provides a heat exchanger cleaning device and cleaning control method, an outdoor unit, and an air conditioner. The positions of the multiple jet openings on the cleaning pipe will have countless jet positions during a cleaning process. Since these jet positions are driven to change, the jet cleaning coverage of the jet openings thereon can be ensured by using very few cleaning pipes. That is, the movable design of the cleaning pipe increases the cleaning range of the heat exchanger by the cleaning device, and the cleaning effect is better. Furthermore, a higher cleaning effect can be achieved by using fewer cleaning pipes and spray devices, thereby reducing the production cost of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of a heat exchanger cleaning device according to an embodiment of the present invention;

[0033] Figure 2 for Figure 1 Front view (facing the heat exchanger side);

[0034] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0035] Figure 4 for Figure 1 A schematic diagram of the three-dimensional structure of the heat exchanger cleaning device and the heat exchanger after assembly;

[0036] Figure 5 for Figure 1 The jet cleaning range of the first axial jet row and the second axial jet row of the first cleaning pipe is shown in FIG. (at the upper stop position);

[0037] Figure 6 for Figure 1The jet cleaning range of the third axial jet row and the fourth axial jet row of the second cleaning pipe in FIG. 1 is schematically shown (at the lower stop position);

[0038] Figure 7 It is a schematic diagram of the three-dimensional structure of the outdoor unit according to an embodiment of the present invention (the air outlet panel is omitted).

[0039] The reference numerals are as follows:

[0040] 1. Cleaning pipe; 11. Jet port; 12. First cleaning pipe; 121. First axial jet row; 122. Second axial jet row; 13. Second cleaning pipe; 131. Third axial jet row; 132. Fourth axial jet row; 21. First slide rail; 22. Fluid pumping component; 23. Reversing valve; 24. Second slide rail; 25. First exchange box; 26. Second exchange box; 27. Distribution valve; 28. Pulse valve; 4. Moving frame; 42. First magnetic part; 100. Heat exchanger; 101. Inner row of heat exchange pipes; 102. Outer row of heat exchange pipes; 200. Outdoor unit fan; 300. Chassis. DETAILED DESCRIPTION

[0041] See also Figures 1 to 7 As shown, according to an embodiment of the present invention, a heat exchanger cleaning device is provided, comprising a cleaning pipe 1, a plurality of jet ports 11 are arranged on the circumferential side wall of the cleaning pipe 1, and the plurality of jet ports 11 are arranged at intervals along the axial direction of the cleaning pipe 1, and further comprising a translation drive mechanism, the translation drive mechanism can drive the cleaning pipe 1 to produce translation, and the translation is in a plane parallel to the air outlet surface of the heat exchanger 100, that is, the cleaning pipe 1 can move on one side of the heat exchanger 100. Specifically, when the air outlet surface (or air inlet surface) of the heat exchanger 100 is a vertical plane, the cleaning pipe 1 moves upward in the vertical plane. The cleaning pipe 1 can move up and down or left and right, thereby, the positions of the multiple jet openings 11 on the cleaning pipe 1 will have countless jet positions in a cleaning process. Since these jet positions are driven to change, it is possible to ensure the jet cleaning coverage of the jet opening 11 by using very few cleaning pipes 1 (for example, 2 or even 1). That is, the movable design of the cleaning pipe 1 increases the cleaning range of the cleaning device for the heat exchanger 100, and the cleaning effect is better. Furthermore, a higher cleaning effect can be achieved by using fewer cleaning pipes and spray devices, thereby reducing the production cost of the air conditioner.

[0042] The translational drive mechanism can be in various forms in structure, such as a conventional cylinder drive, a motor-driven screw transmission pair, and a gear transmission with a more complex structure. These structures can achieve a translational drive effect, but are relatively not compact in structure. As a more preferred embodiment, the translational drive mechanism includes a first slide rail 21 and a fluid pumping component 22. The first slide rail 21 has a driving hole cavity (not shown in the figure) that runs through the first slide rail 21 along its length direction. A piston (not shown in the figure) is provided in the driving hole cavity, and the piston divides the driving hole cavity into a first cavity (not shown in the figure) and a second cavity (not shown in the figure). The high-pressure fluid outlet of the fluid pumping component 22 is connected to one of the first chamber and the second chamber to drive the piston to reciprocate along the length direction of the first slide rail 21. The piston can drive the cleaning pipe 1 to follow its translation. The first slide rail 21 in this technical solution serves as a movement guide component of the cleaning pipe 1 on the one hand, and as a driving execution component for the movement of the cleaning pipe 1 on the other hand, so that the structures of the two are organically integrated into a whole, and the structure is more compact, which is conducive to optimizing the space in the outdoor unit. Due to the more compact structure, the cleaning device can be improved on the basis of the existing outdoor unit, reducing the modification cost of the air conditioner.

[0043] Further, the cleaning pipe 1 is connected to the moving frame 4, and the moving frame 4 is mounted on the outer peripheral side of the first slide rail 21. There is an attraction force between the moving frame 4 and the piston. Specifically, the moving frame 4 is provided with a first mounting hole, and the moving frame 4 is mounted on the first slide rail 21 through the first mounting hole. The first mounting hole is coaxially provided with a first magnetic member 42, and the piston is provided with a second magnetic member, and the first magnetic member 42 is opposite to the second magnetic member (not shown in the figure). That is, the piston and the moving frame 4 are connected non-contactly by means of magnetic attraction. This method ensures the structural integrity of the first slide rail 21 as a fluid storage chamber (such as the aforementioned first chamber and second chamber), and effectively overcomes the defects of other connection methods that require the structure of the first slide rail 21 to be destroyed and the necessary fluid sealing treatment to be performed. At this time, it can be understood that the first slide rail 21 can be selected as a round tube. Of course, since the moving frame 4 and the piston will generate relative movement with the first slide rail 21, it should be ensured that the roughness of the outer tube wall and the inner hole wall of the selected round tube meets the design requirements.

[0044] Preferably, the translation drive structure further includes a reversing valve 23, the reversing valve 23 having an inlet (not shown in the figure), a first outlet (not shown in the figure), and a second outlet (not shown in the figure), the inlet being connected to the high-pressure fluid outlet of the fluid pumping component 22, the first outlet being connected to the first cavity, and the second outlet being connected to the second cavity, the reversing valve 23 being used to connect the high-pressure fluid output by the fluid pumping component 22 to the first cavity or the second cavity of the first slide rail 21, so as to pass the fluid pressure in the first cavity and the second cavity. The difference forces the piston to reciprocate along the length direction of the first slide rail 21. Preferably, the reversing valve 23 is an electromagnetic reversing valve, and the switching of the reversing signal of the electromagnetic reversing valve is limited by the travel stop signals at both ends of the first slide rail 21. Specifically, for example, corresponding travel switches should be provided at both ends of the length of the first slide rail 21 to detect whether the moving frame 4 (equivalent to the position of the cleaning pipe 1) reaches the two ends of the length of the first slide rail 21. When it reaches the end, the electromagnetic reversing valve is triggered to reverse, and the cleaning pipe 1 runs in the reverse direction.

[0045] Furthermore, the translational drive structure also includes a second slide rail 24, which has a connecting hole cavity that penetrates along its length direction, one end of the connecting hole cavity is connected to the first cavity, and the other end of the connecting hole cavity is connected to the second cavity. The moving frame 4 is also mounted on the second slide rail 24. At this time, the design of the second slide rail 24 can, on the one hand, improve the stability of the moving direction of the moving frame 4, thereby ensuring the uniformity of the distance between the cleaning pipe 1 and the heat exchanger 100, and ensuring the consistency of the cleaning effect. On the other hand, it serves as a connecting pipeline between the first cavity and the second cavity, further simplifying the structure of the cleaning device and making its structure more compact.

[0046] Furthermore, the translational drive structure also includes a first flow converter box 25, the first flow converter box 25 has a first flow chamber and a second flow chamber, the first outlet is connected to the first chamber through the first flow chamber, the second outlet is connected to the connecting hole through the second flow chamber, and the first flow chamber and the second flow chamber in the first flow converter box 25 can balance the air pressure of the fluid in the first chamber or the second chamber, that is, when the high-pressure fluid is connected to the first chamber through the first flow chamber, the piston will move toward the second chamber. At this time, if the fluid in the second chamber is directly unloaded, the high-pressure fluid in the first chamber will force the piston to move toward the second chamber at high speed. The movement of the second chamber will, on the one hand, reduce the contact and cleaning time between the jet fluid in the cleaning pipe 1 and the heat exchanger 100, thereby reducing the cleaning effect. On the other hand, the high-speed running piston will be easily damaged or damage the components that cooperate with it. At this time, the second flow chamber stores the low-pressure fluid, and its pressure will gradually increase with the movement of the piston, thereby forming an obstacle balance for the high-speed movement of the piston, making the translational speed of the cleaning pipe 1 more controllable. Furthermore, corresponding overflow valves can be respectively arranged in the first flow chamber and the second flow chamber. When the pressure therein exceeds the limit pressure, the fluid pressure is relieved, thereby ensuring that the pressure of the entire fluid system will not be too high. Furthermore, the first converter box 25 is located at the end of the first slide rail 21 corresponding to the first cavity. At this time, the first converter box 25 also becomes a displacement stroke limiting structure for the moving frame 4. Similarly, a second converter box 26 is also arranged at the end of the first slide rail 21 corresponding to the second cavity. The connecting hole cavity and the second cavity are connected through the third flow cavity of the second converter box 26. At this time, the second converter box 26 has the dual functions of flow and end limiting. At the same time, the first converter box 25 and the second converter box 26 can also be used as components for connecting the cleaning device to the shell of the outdoor unit. Specifically, for example, the second converter box 26 is fixedly connected to the chassis 300 of the outdoor unit, and the first converter box 25 is fixedly connected to the top shell of the outdoor unit (not marked in the figure).

[0047] Preferably, the fluid pumping component 22 is an air compression pump, and the translation drive mechanism includes a fluid distribution valve 27, which is used to deliver the high-pressure fluid generated by the fluid pumping component 22 to the first cavity or the second cavity of the cleaning pipe 1 and the first slide rail 21 respectively. At this time, the cleaning device uses high-pressure gas as the cleaning fluid and also as the driving fluid for the translation of the cleaning pipe 1. Since the high-pressure gas is used to clean the heat exchanger 100, the cleaning of the heat exchanger 100 can be free from the restrictions of the ambient temperature and the operating mode of the air conditioner. For example, in winter, due to the low outdoor environment, the conventional cleaning device using liquid as the cleaning medium will no longer be applicable, because it is easy to cause the heat exchanger to freeze during the cleaning process. At the same time, in winter, the air conditioner is in the heating mode for a long time, and the outdoor heat exchanger will frost. The traditional way is to control the air conditioner to run in the cooling mode for a period of time to achieve defrosting. The cleaning device of the present invention can remove the frost layer attached to the heat exchanger 100 by spraying high-pressure gas without switching the operating mode of the air conditioner, without affecting the indoor temperature and without causing the adverse consequences of freezing.

[0048] A pulse valve 28 is provided between the fluid distribution valve 27 and the cleaning pipe 1 , and the pulse valve 28 is used to control the output of the high-pressure fluid in the distribution valve 27 .

[0049] The cleaning pipe 1 includes a first cleaning pipe 12, and the plurality of jet openings 11 of the first cleaning pipe 12 are divided into a first axial jet row 121 (i.e., a plurality of jet openings arranged in rows along the axial direction of the first cleaning pipe 12) and a second axial jet row 122 (i.e., a plurality of jet openings arranged in rows along the axial direction of the first cleaning pipe 12). The first axial jet row 121 and the second axial jet row 122 are arranged at intervals along the circumference of the first cleaning pipe 12, thereby forming a first angle α between the fluid injection direction of any jet opening 11 in the first axial jet row 121 and the projection of the fluid injection direction of any jet opening 11 in the second axial jet row 122 on any plane perpendicular to the axial direction of the first cleaning pipe 12. The size of the first angle α can be used to match it with the heat dissipation channel on the heat exchanger 100. Preferably, for example, the angle between the center line of the inner row of heat exchange tubes 101 and the outer row of heat exchange tubes 102 of the heat exchanger 100 and the horizontal plane is θ (e.g., Figure 5As shown), θ=α / 2, that is, the jet direction of each jet port 11 in the first axial jet row 121 will be parallel to the heat dissipation channel on the heat exchanger 100, which adapts to the phenomenon that the back area of ​​the heat exchange tube cannot be effectively cleaned when the jet fluid of the jet port 11 is perpendicular to the air inlet surface or the air outlet surface of the heat exchanger 100 due to the inclination between the inner row of heat exchange tubes 101 and the outer row of heat exchange tubes 102 in the prior art. By adopting the technical solution of the present invention, the angled first axial jet row 121 and the second axial jet row 122 can reach the back area of ​​the heat exchange tube adjacent to them, thereby ensuring the cleaning effect of the heat exchanger 100, especially when the cleaning tube 1 can move horizontally relative to the heat exchanger 100, it is more conducive to improving the cleaning effect; in addition, as Figure 5 As shown, the angled first axial jet row 121 and the second axial jet row 122 can also effectively expand the cleaning range of the cleaning pipe 1 at the end of the first slide rail 21. For the technical solution of the present invention, the jet fluid of the jet port 11 in the first axial jet row 121 can enter the area of ​​the heat exchanger 100 covered by the first exchange box 25. Similarly, the cleaning pipe 1 also includes a second cleaning pipe 13, which is parallel to the first cleaning pipe 12. The plurality of jet ports 11 of the second cleaning pipe 13 are divided into a third axial jet row 131 and a fourth axial jet row 132. The third axial jet row 131 and the fourth axial jet row 132 are arranged at intervals along the circumference of the second cleaning pipe 13, and the fluid injection direction of any jet port 11 in the third axial jet row 131 and the fluid injection direction of any jet port 11 in the fourth axial jet row 132 form a second angle β between their projections on any plane perpendicular to the axial direction of the second cleaning pipe 13. At this time, as shown in FIG. Figure 6 As shown, the jet fluid from the jet port 11 of the fourth axial jet row 132 of the second cleaning pipe 13 can enter the area of ​​the heat exchanger 100 covered by the second exchange box 26, and the β can be equal to the α. Preferably, the bisector of the second angle β is parallel to the bisector of the first angle α, β≠α, thereby enabling the first cleaning pipe 12 and the second cleaning pipe 13 to overlap and intersect in the cleaning range, thereby further improving the multi-angle cleaning of the heat exchanger 100 and further improving the cleaning effect.

[0050] The jet port 11 may be a circular hole structure or a Figure 3According to the slit structure shown in the figure, the first axial jet row 121 and the second axial jet row 122 can be arranged parallel to each other in the axial direction of the first cleaning pipe 12. Furthermore, the jet ports 11 in the first axial jet row 121 and the jet ports 11 in the second axial jet row 122 are alternately arranged along the axial direction of the first cleaning pipe 12, so that by arranging a plurality of cleaning pipes 1, the plurality of jet ports 11 can cover the corresponding width of the heat exchanger 100 in the axial extension direction of the cleaning pipe 1, thereby achieving full width coverage of the heat exchanger and preventing the problem of too low pressure at the end far away from the fluid inlet caused by excessive attenuation of the pressure fluid when the jet ports 11 on each cleaning pipe 1 penetrate the length of the corresponding cleaning pipe 1.

[0051] According to an embodiment of the present invention, Figure 7 As shown, an outdoor unit is also provided, comprising the above-mentioned heat exchanger cleaning device, wherein the heat exchanger cleaning device is back-mounted at a position between the heat exchanger 100 and the outdoor unit fan 200 (fan blades). Furthermore, the outdoor unit fan 200 is a suction fan, that is, after its operation, it will force the external heat dissipation airflow to first pass through the heat exchanger 100 and then flow out of the outdoor unit through the air outlet grille located on the outside of the outdoor unit fan 200. At this time, the jet fluid of the heat exchanger cleaning device is from the inside of the outdoor unit toward the outside of the outdoor unit, specifically, from one side of the outdoor unit fan 200 toward one side of the heat exchanger 100, thereby ensuring that the dirty objects cleaned by the cleaning device are on the outside of the outdoor unit, thereby preventing secondary contamination of the inner components of the outdoor unit.

[0052] According to an embodiment of the present invention, there is also provided an air conditioner, comprising the outdoor unit described above.

[0053] According to an embodiment of the present invention, a heat exchanger cleaning control method is also provided, which is used to control the above-mentioned heat exchanger cleaning device to clean the heat exchanger, comprising the following steps:

[0054] Obtaining the real-time speed of the outdoor fan 200 and the real-time wind pressure Ps corresponding to the real-time speed;

[0055] Obtaining a preset wind pressure Py corresponding to the real-time rotation speed;

[0056] Obtain the absolute value of the difference between Ps and Py △Ps=|Ps-Py| and the preset wind pressure difference △Py;

[0057] When ΔPs>ΔPy, the cleaning pipe 1 is controlled to spray fluid, and the translation drive mechanism is controlled to drive the cleaning pipe 1 to translate. Specifically, for example, the reversing valve 23 is controlled to make the first chamber and the high-pressure fluid of the fluid pumping component 22 communicate with each other, so that Figure 7Taking the position shown as an example, at this time, the piston will be driven downward by the high-pressure fluid, and at the same time, the piston drives the moving frame 4 connected to its magnetic attraction and the cleaning pipe 1 thereon to move downward. At the same time, the pulse valve 28 is controlled to make the cleaning pipe 1 conduct the high-pressure fluid, thereby realizing the jet cleaning of the high-pressure fluid.

[0058] When ΔPs≤ΔPy, the cleaning pipe 1 is controlled to stop spraying fluid, and the translation drive mechanism is controlled to drive the cleaning pipe 1 to stop translation.

[0059] Further, when ΔPs≤ΔPy and the translational drive mechanism includes the first converter box 25 or the second converter box 26, the cleaning pipe 1 is controlled to stop near the first converter box 25 or the second converter box 26 to prevent the cleaning pipe 1 from stopping in the middle area of ​​the heat exchanger 100, which may adversely affect its heat dissipation performance.

[0060] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A heat exchanger cleaning device, characterized in that: The invention comprises a cleaning pipe (1), a plurality of jet ports (11) being arranged on the circumferential side wall of the cleaning pipe (1), the plurality of jet ports (11) being arranged at intervals along the axial direction of the cleaning pipe (1), and a translation drive mechanism, the translation drive mechanism being capable of driving the cleaning pipe (1) to produce translation, the translation being in a plane parallel to the air outlet surface of a heat exchanger (100); the translation drive mechanism comprising a first slide rail (21) and a fluid pumping component (22), the first slide rail (21) having a driving hole cavity penetrating along its length direction, a piston being arranged in the driving hole cavity, the piston dividing the driving hole cavity into a first cavity and a second cavity, the high-pressure fluid outlet of the fluid pumping component (22) being connected to one of the first cavity and the second cavity to drive the The piston reciprocates along the length direction of the first slide rail (21), and the piston can drive the cleaning pipe (1) to follow its translation; the translation drive structure also includes a reversing valve (23), the reversing valve (23) having an inlet, a first outlet, and a second outlet, the inlet is connected to the high-pressure fluid outlet of the fluid pumping component (22), the first outlet is connected to the first cavity, and the second outlet is connected to the second cavity, the reversing valve (23) is used to connect the high-pressure fluid output by the fluid pumping component (22) to the first cavity or the second cavity of the first slide rail (21), so as to force the piston to reciprocate along the length direction of the first slide rail (21) through the fluid pressure difference in the first cavity and the second cavity.

2. The cleaning device according to claim 1, characterized in that: The cleaning pipe (1) is connected to a moving frame (4), the moving frame (4) is sleeved on the outer peripheral side of the first slide rail (21), and there is a suction force between the moving frame (4) and the piston.

3. The cleaning device according to claim 2, characterized in that: The moving frame (4) is provided with a first fitting hole, and the moving frame (4) is fitted with the first slide rail (21) through the first fitting hole. The first fitting hole is coaxially provided with a first magnetic component (42). The piston is provided with a second magnetic component, and the first magnetic component (42) has opposite magnetism to the second magnetic component.

4. The cleaning device according to claim 1, characterized in that: The translational drive structure also includes a second slide rail (24), the second slide rail (24) having a connecting hole cavity penetrating along its length direction, one end of the connecting hole cavity penetrating the first cavity, and the other end of the connecting hole cavity penetrating the second cavity, and the moving frame (4) is also mounted on the second slide rail (24).

5. The cleaning device according to claim 4, characterized in that: The translational drive structure further comprises a first converter box (25), the first converter box (25) having a first flow chamber and a second flow chamber, the first flow outlet and the first chamber being connected via the first flow chamber, and the second flow outlet and the connecting hole being connected via the second flow chamber.

6. The cleaning device according to claim 5, characterized in that: The first converter box (25) is located at the end of the first slide rail (21) corresponding to the first cavity.

7. The cleaning device according to claim 4, characterized in that: The translational drive structure further comprises a second converter box (26), the communicating hole cavity and the second cavity are connected via a third flow cavity of the second converter box (26), and the second converter box (26) is located at the end of the first slide rail (21) corresponding to the second cavity.

8. The cleaning device according to claim 1, characterized in that: The fluid pumping component (22) is an air compression pump.

9. The cleaning device according to claim 1, characterized in that: The translational drive mechanism comprises a fluid distribution valve (27), and the fluid distribution valve (27) is used to deliver the high-pressure fluid generated by the fluid pumping component (22) to the first cavity or the second cavity of the cleaning pipe (1) and the first slide rail (21) respectively.

10. The cleaning device according to claim 9, characterized in that: A pulse valve (28) is provided between the fluid distribution valve (27) and the cleaning pipe (1).

11. The cleaning device according to claim 1, characterized in that: The cleaning pipe (1) comprises a first cleaning pipe (12); the plurality of jet openings (11) of the first cleaning pipe (12) are divided into a first axial jet row (121) and a second axial jet row (122); the first axial jet row (121) and the second axial jet row (122) are arranged at intervals along the circumference of the first cleaning pipe (12).

12. The cleaning device according to claim 11, characterized in that: The jet openings (11) in the first axial jet row (121) and the jet openings (11) in the second axial jet row (122) are alternately arranged along the axial direction of the first cleaning pipe (12).

13. The cleaning device according to claim 11, characterized in that: A first angle α is formed between the projection of the fluid injection direction of any jet opening (11) in the first axial jet row (121) and the fluid injection direction of any jet opening (11) in the second axial jet row (122) on any plane perpendicular to the axial direction of the first cleaning pipe (12), and an angle θ is formed between a line connecting the tube centers of the inner row of heat exchange tubes (101) and the outer row of heat exchange tubes (102) of the heat exchanger (100) and a horizontal plane, θ=α / 2.

14. The cleaning device according to claim 13, characterized in that: The cleaning pipe (1) further comprises a second cleaning pipe (13), the second cleaning pipe (13) being parallel to the first cleaning pipe (12), the plurality of jet openings (11) of the second cleaning pipe (13) being divided into a third axial jet row (131) and a fourth axial jet row (132), the third axial jet row (131) and the fourth axial jet row (132) being arranged at intervals along the circumference of the second cleaning pipe (13), and a second angle β is formed between the projections of the fluid injection direction of any jet opening (11) in the third axial jet row (131) and the fluid injection direction of any jet opening (11) in the fourth axial jet row (132) on any plane perpendicular to the axial direction of the second cleaning pipe (13), and the angular bisector of the second angle β is parallel to the angular bisector of the first angle α, β≠α.

15. An outdoor unit, comprising a heat exchanger cleaning device, characterized in that: The heat exchanger cleaning device is the heat exchanger cleaning device according to any one of claims 1 to 14.

16. An air conditioner, comprising an outdoor unit, characterized in that: The outdoor unit is the outdoor unit according to claim 15.

17. A heat exchanger cleaning control method, characterized in that: The heat exchanger cleaning device used to control any one of claims 1 to 14 to clean the heat exchanger comprises the following steps: Obtaining the real-time rotation speed of the outdoor unit fan (200) and the real-time wind pressure Ps corresponding to the real-time rotation speed; Obtaining a preset wind pressure Py corresponding to the real-time rotation speed; Obtain the absolute value of the difference between Ps and Py △Ps=|Ps-Py| and the preset wind pressure difference △Py; When ΔPs>ΔPy, the cleaning pipe (1) is controlled to spray fluid, and the translation drive mechanism is controlled to drive the cleaning pipe (1) to translate.

18. The cleaning control method according to claim 17, characterized in that: When ΔPs≤ΔPy, the cleaning pipe (1) is controlled to stop spraying fluid, and the translation drive mechanism is controlled to drive the cleaning pipe (1) to stop translation.

19. The cleaning control method according to claim 18, characterized in that: When ΔPs≤ΔPy and the translational drive mechanism includes a first converter box (25) or a second converter box (26), the cleaning pipe (1) is controlled to stop adjacent to the first converter box (25) or the second converter box (26).

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