Water tank cleaning system of purifying and heating all-in-one machine and control method thereof

Abstract

The invention relates to the technical field of water tank cleaning, in particular to a water tank cleaning system of a purifying and heating all-in-one machine and a control method thereof. The system comprises a first controllable pipeline, a second controllable pipeline, a third controllable pipeline and a cleaning nozzle, one end of the first controllable pipeline is connected with a water outlet of the hot container, the other end of the first controllable pipeline is connected with the water inlet end of the booster pump, one end of the second controllable pipeline is connected with the water outlet end of the booster pump, and the other end of the second controllable pipeline is connected with the water inlet end of the booster pump. The other end of the second controllable pipeline is connected with a water inlet end of the cleaning nozzle, the cleaning nozzle is arranged at a water inlet of the pure water tank, the cleaning nozzle is used for self-rotating under water flow pressure so as to spray hot water on the inner wall of the pure water tank, one end of the third controllable pipeline is connected with a water outlet of the pure water tank, and the other end of the third controllable pipeline is connected with the water outlet. The advantage of saving space of the purifying and heating all-in-one machine is maintained, meanwhile, efficient cleaning of the pure water tank is achieved, and the self-purifying capacity of the purifying and heating all-in-one machine is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water tank cleaning, and in particular to a water tank cleaning system of a heat and air purifier and a control method thereof. Background Art

[0002] With the improvement of modern people's quality of life, various drinking water equipment has entered the home, and people's requirements for the experience of drinking equipment are increasing. The all-in-one water purifier and water heater is a drinking water equipment that combines water purification and heating functions. It can not only filter impurities and harmful substances in the water, but also provide instant hot water. Compared with installing a water purifier and a water heater separately, the all-in-one water purifier and water heater can meet the convenience needs of consumers and save space to a large extent. It is especially suitable for homes or commercial environments with limited space.

[0003] Please see attached Figure 1 The existing integrated heat and water purification machine usually includes a water purification unit, a heat tank, a pure water tank and a faucet. The water purification unit is used to filter the raw water entering the integrated heat and water purification machine. The filtered water enters the heat tank and the pure water tank in two ways respectively. One way is to heat the water with the heat tank and store hot water. The output end of the heat tank is connected to the faucet through a first pump. The other way enters the pure water tank and is directly stored as normal temperature water. The output end of the pure water tank is connected to the faucet through a second pump. In order to save space, the water purification unit of the integrated heat and water purification machine in the prior art is usually a composite filter element including at least a pre-filter membrane and a reverse osmosis membrane. The raw water flows in from the first water inlet end of the composite filter element, and flows out from the first water outlet end of the composite filter element after being filtered by the pre-filter membrane. The pre-filtered water flows back into the second water inlet end of the composite filter element under the action of the booster pump. After being filtered by the reverse osmosis membrane, the final filtered water flows out from the second water outlet end of the composite filter element, and the waste water generated by the filtration flows out from the drain port.

[0004] It can be seen that in order to achieve the design goal of saving space for the all-in-one water purifier and heat pump, the internal pipelines of the all-in-one water purifier and heat pump are often designed to be relatively compact, so it is difficult to install a large-scale circulating filtration network and sterilization and cleaning equipment, resulting in its self-purification ability usually being inferior to that of an independent water purifier or water heater. The lack of an effective circulating filtration and sterilization system will make it more challenging to maintain the internal water quality and clean the equipment during the long-term use of the all-in-one water purifier and heat pump, especially for the maintenance of the pure water tank. Specifically, in real life, if hot water flows out of the water outlet, the high temperature usually kills most of the bacteria, thereby ensuring the safety of the water quality. However, if cold water is used, the water stored in the pure water tank will inevitably have problems with microbial growth when it is left standing for a long time, resulting in a deterioration in water quality.

[0005] To solve this problem, many purifiers and heat-in-one machines currently install ultraviolet (UV) sterilization lamps in the pure water tank to sterilize the water through ultraviolet irradiation. However, there are always blind spots in the pure water tank where UV sterilization lamps cannot effectively sterilize the water, leaving health and safety risks. Moreover, long-term exposure to light can easily cause aging and decomposition of the plastic material in the pure water tank, which not only affects the structural integrity of the pure water tank, but may also release harmful substances, further polluting the water quality. Summary of the invention

[0006] In response to the above technical problems, the present invention proposes a water tank cleaning system and a control method for a pure water tank machine, aiming to maintain the space-saving advantage of the pure water tank machine while achieving efficient cleaning of the pure water tank, effectively improving the self-cleaning ability of the pure water tank machine, ensuring the cleanliness and safety of the water quality inside the pure water tank during long-term use, while taking into account the durability of the water tank material.

[0007] In the first aspect, the present application provides a water tank cleaning system for a pure water tank, comprising: a first controllable pipeline, a second controllable pipeline, a third controllable pipeline and a cleaning nozzle, wherein one end of the first controllable pipeline is connected to the water outlet of the heat tank, and the other end of the first controllable pipeline is connected to the water inlet of the booster pump, one end of the second controllable pipeline is connected to the water outlet of the booster pump, and the other end of the second controllable pipeline is connected to the water inlet of the cleaning nozzle, the cleaning nozzle is arranged at the water inlet of the pure water tank, and the cleaning nozzle is used to self-rotate under water flow pressure to spray hot water on the inner wall of the pure water tank, one end of the third controllable pipeline is connected to the water outlet of the pure water tank, and the other end of the third controllable pipeline is connected to the drain.

[0008] In some embodiments, a first valve is provided on the first controllable pipeline, a second valve is provided on the second controllable pipeline, a third valve is provided on the third controllable pipeline, a fourth valve is provided between the water inlet end of the booster pump and the first water outlet end of the composite filter element, and a fifth valve is provided between the water outlet end of the booster pump and the second water inlet end of the composite filter element.

[0009] In some embodiments, the cleaning nozzle includes a nozzle body and a nozzle, the nozzle body is arranged at the water inlet of the pure water tank, the water inlet end of the nozzle body is fixedly connected to one end of the second controllable pipeline, the water outlet end of the nozzle body is rotatably connected to the middle part of the nozzle, and the upper surface of the nozzle is provided with a plurality of curved grooves with the same curvature, so that the water flows through the interior of the nozzle body and then flows from the water outlet end of the nozzle body into the plurality of curved grooves on the upper surface of the nozzle and then sprayed out along the curved grooves, thereby realizing self-rotating spraying of the nozzle.

[0010] In some embodiments, the nozzle is configured as a curved surface convex toward the middle, and a plurality of the curved grooves are distributed on the upper surface of the nozzle along the central axis of the nozzle.

[0011] In some embodiments, a plurality of the curved grooves are symmetrically distributed on the upper surface of the nozzle along the central axis of the nozzle, and the depths of two axially symmetrically distributed curved grooves are different.

[0012] In some embodiments, a plurality of the curved grooves are distributed at equal intervals on the upper surface of the nozzle, and the depths of two adjacent curved grooves are different.

[0013] In some embodiments, the cleaning nozzle includes an outer sleeve, which is fixedly connected to the nozzle body. The bottom surface of the outer sleeve is provided with an inwardly protruding water gathering port. The middle part of the upper surface of the nozzle is provided with a groove matching the water gathering port, and a plurality of the curved grooves are symmetrically distributed on the upper surface of the nozzle along the circumference of the groove.

[0014] In a second aspect, the present application provides a control method for a water tank cleaning system of a heat and air purifier, which is used to implement the water tank cleaning system of the heat and air purifier as described above, comprising the following steps:

[0015] Step 102, monitoring the water levels of the pure water tank and the heat tank, and controlling the heat tank to replenish water until the water in the heat tank reaches a predetermined water level and stops replenishing water;

[0016] Step 104, controlling the heat bulb to perform a heating operation, and stopping the heating operation when a preset temperature is reached;

[0017] Step 106, close the third valve, the fourth valve and the fifth valve, and control the first valve, the second valve and the booster pump to open so that the pressurized water flow impacts the cleaning nozzle on the water inlet of the pure water tank;

[0018] Step 108, when the water level in the pure water tank reaches the highest point or the water level in the hot water tank reaches the lowest point, close the first valve, the second valve and the booster pump;

[0019] Step 110, calculating the drainage time, and controlling the third valve and the second water pump to open within the drainage time to drain water.

[0020] In some embodiments, in step 110, calculating the drainage time includes:

[0021] Obtain the water flow rate when the second water pump is running and the volume of the pure water tank at the highest water level;

[0022] The drainage time is obtained by quotient the volume of the pure water tank at the highest water level point and the water flow rate when the second pump is running.

[0023] In some embodiments, after step 110, the method further includes:

[0024] Step 112, execute steps 102 to 110 again to perform secondary cleaning on the pure water tank.

[0025] The beneficial technical effects of the present invention include at least:

[0026] 1. The water tank cleaning system and control method of the integrated heat and air purifier are cleverly designed through a subtle structural design on the basis of the existing pipelines of the integrated heat and air purifier, and a miniaturized high-efficiency circulation cleaning system is cleverly designed. While maintaining the space-saving advantage of the integrated heat and air purifier, the efficient cleaning of the pure water tank is achieved. Specifically, by adding only three controllable pipelines and a small cleaning nozzle on the basis of the existing pipelines, the hot water stored in the heat tank is transported to the water inlet of the pure water tank during the cleaning operation. Combined with the creative design of the booster pump and the cleaning nozzle in the existing pipeline, the booster pump is cleverly used to pressurize the hot water waterway, so that the hot water pressure finally entering the pure water tank is relatively large, impacting the cleaning nozzle. The cleaning nozzle rotates under the pressure of the water flow, so that the hot water entering the pure water tank forms a spray state, thereby better high-temperature sterilization and flushing of the inner wall of the water tank, and the drainage of the third controllable pipeline is combined to achieve high-temperature cleaning of the circulating flow of the pure water tank, effectively improving the self-cleaning ability of the integrated heat and air purifier, ensuring the cleanliness and safety of the water quality inside the pure water tank during long-term use, and reducing potential damage to the water tank material;

[0027] 2. The nozzle body is fixedly installed on the water inlet of the pure water tank, the water inlet end of the nozzle body is connected to the second controllable pipeline, the middle part of the nozzle is rotatably connected to the water outlet end of the nozzle body, and a plurality of curved grooves with the same curvature are arranged on the upper surface of the nozzle. Therefore, when the hot water in the heat tank flows into the nozzle body through the second controllable pipeline, the hot water will flow out from the water outlet end of the nozzle body to the upper surface of the nozzle, and then flow to the curved grooves on the upper surface of the nozzle. Since the curved grooves on the upper surface of the nozzle are of the same curvature, the water flow will produce different flow rates on different sides of the nozzle surface. According to Bernoulli's principle, the pressure on the side with a faster flow rate will decrease, while the pressure on the side with a slower flow rate will be relatively high. This pressure difference causes the nozzle to be subjected to a lateral force, namely the Magnus force. Due to the action of the Magnus force, the nozzle will be subjected to a force that causes it to rotate around its own axis. The moment makes the nozzle rotate under the pressure of water flow (in the present application, the nozzle rotates in the opposite direction of the curvature of the curved groove). As the nozzle rotates, hot water is sprayed quickly and evenly on the inner wall of the pure water tank, thereby achieving the purpose of high-temperature sterilization and cleaning of the pure water tank. Compared with the nozzle design in the prior art in which water flows through the opening inside the nozzle and then sprays, the surface spray design of the nozzle can more easily achieve uniform distribution of water on the surface of the nozzle, thereby making the spray coverage area wider and the spraying effect more uniform. It also avoids the problem of nozzle opening blockage caused by the deposition of microbial impurities that may exist in the water flow. Moreover, the nozzle with internal openings may produce water hammer due to the sudden cessation of water flow, while the surface spray design can greatly reduce this phenomenon and extend the service life of the nozzle and water tank cleaning system.

[0028] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings:

[0030] Figure 1 It is a structural schematic diagram of an existing heat and air purification integrated machine.

[0031] Figure 2 The present invention is a schematic diagram of the structure of the water tank cleaning system of the air conditioner and heat pump according to an embodiment of the present invention.

[0032] Figure 3 It is a structural explosion diagram of the cleaning nozzle according to an embodiment of the present invention.

[0033] Figure 4 This is a flow chart of a control method for a water tank cleaning system of a heat and air purifier according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The technical solutions of the embodiments of the present invention are explained and described below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0035] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operate in a specific direction. Therefore, it should not be understood as a limitation of the present invention.

[0036] Please see attached Figure 2 , Figure 2 A schematic diagram of the structure of a water tank cleaning system of a heat and air purifier provided in one embodiment of the present specification is shown.

[0037] like Figure 2As shown, the water tank cleaning system of the pure water tank 2 may include at least a first controllable pipeline, a second controllable pipeline, a third controllable pipeline and a cleaning nozzle 9. One end of the first controllable pipeline is connected to the water outlet of the heat tank 1, and the other end of the first controllable pipeline is connected to the water inlet of the booster pump 41. One end of the second controllable pipeline is connected to the water outlet of the booster pump 41, and the other end of the second controllable pipeline is connected to the water inlet of the cleaning nozzle 9. The cleaning nozzle 9 is arranged at the water inlet of the pure water tank 2. The cleaning nozzle 9 is used to self-rotate under water flow pressure to spray hot water on the inner wall of the pure water tank 2. One end of the third controllable pipeline is connected to the water outlet of the pure water tank 2, and the other end of the third controllable pipeline is connected to the drain 5.

[0038] Among them, the first controllable pipeline, the second controllable pipeline and the third controllable pipeline are respectively provided with valve devices for controlling the water flow of the pipeline, and the valve devices include but are not limited to solenoid valves, pneumatic valves, electric valves, flow control valves, etc., which are not limited in this embodiment.

[0039] Furthermore, in this embodiment, a first water inlet and a second water inlet are provided on the pure water tank 2, wherein the first water inlet is connected to the second water outlet end of the composite filter element 4, and is used to input filtered water when the pure water heat machine normally stores room temperature water, and the cleaning nozzle 9 is arranged at the second water inlet, that is, the cleaning nozzle 9 serves as an intermediate piece between the second controllable pipeline and the second water inlet of the pure water tank 2, and is only used to input hot water when the cleaning system is running, thereby avoiding the situation where bacteria remain on the cleaning nozzle 9 when the pure water heat machine normally stores room temperature water and passes through the cleaning nozzle 9, while reducing the frequency of use of the cleaning nozzle 9 and extending the service life of the cleaning nozzle 9.

[0040] It can be understood that in this embodiment, a miniaturized high-efficiency circulation cleaning system is cleverly designed through a subtle structural design based on the pipeline of the existing heat and air purifier, which achieves efficient cleaning of the pure water tank 2 while maintaining the space-saving advantage of the heat and air purifier. Specifically, by adding only three controllable pipelines and a small cleaning nozzle 9 on the basis of the existing pipeline, the hot water stored in the heat tank 1 is transported to the water inlet of the pure water tank 2 during the cleaning operation, and the booster pump 41 and the creative design of the cleaning nozzle 9 in the existing pipeline are combined. The booster pump 41 is cleverly used to pressurize the hot water waterway, so that the hot water pressure that finally enters the pure water tank 2 is relatively large, impacting the cleaning nozzle 9, and the cleaning nozzle 9 rotates under the pressure of the water flow, so that the hot water entering the pure water tank 2 forms a spray state, thereby better high-temperature sterilization and flushing of the inner wall of the water tank, and the high-temperature cleaning of the circulating flow of the pure water tank 2 is achieved in combination with the drainage of the third controllable pipeline, which effectively improves the self-cleaning ability of the heat and air purifier, ensures the cleanliness and safety of the water quality inside the pure water tank 2 during long-term use, and reduces the potential damage to the water tank material.

[0041] In one embodiment of the present specification, a first valve 6 is provided on the first controllable pipeline, a second valve 7 is provided on the second controllable pipeline, a third valve 8 is provided on the third controllable pipeline, a fourth valve 42 is provided between the water inlet end of the boosting pump 41 and the first water outlet end of the composite filter element 4, and a fifth valve 43 is provided between the water outlet end of the boosting pump 41 and the second water inlet end of the composite filter element 4.

[0042] It can be understood that valves are respectively arranged between the water inlet end of the booster pump 41 and the first water outlet end of the composite filter element 4 and between the water outlet end of the booster pump 41 and the second water inlet end of the composite filter element 4, so as to avoid the adverse effect of the operation of the booster pump 41 on the pressure generated by the composite filter element 4 when the cleaning system is running, extend the life of the composite filter element 4, and provide support for the control of the water flow direction in the air conditioner and heat pump when executing the cleaning system.

[0043] Please see attached Figure 3 , Figure 3 An exploded view of the structure of a cleaning nozzle 9 provided in one embodiment of the present specification is shown.

[0044] like Figure 3 As shown, the cleaning nozzle 9 may at least include a nozzle body 91 and a nozzle 93. The nozzle body 91 is arranged at the water inlet of the pure water tank 2. The water inlet end of the nozzle body 91 is fixedly connected to one end of the second controllable pipeline. The water outlet end of the nozzle body 91 is rotatably connected to the middle part of the nozzle 93. The upper surface of the nozzle 93 is provided with a plurality of curved grooves 931 with the same curvature, so that the water flows through the inside of the nozzle body 91 and then flows from the water outlet end of the nozzle body 91 into the plurality of curved grooves 931 on the upper surface of the nozzle 93 and then is sprayed out along the curved grooves 931, thereby realizing the self-rotating spraying of the nozzle 93.

[0045] It can be understood that, in this embodiment, the nozzle body 91 is fixedly installed at the water inlet of the pure water tank 2, the water inlet end of the nozzle body 91 is connected to the second controllable pipeline, the middle part of the nozzle 93 is rotatably connected to the water outlet end of the nozzle body 91, and a plurality of curved grooves 931 with the same curvature are provided on the upper surface of the nozzle 93. Therefore, when the hot water in the hot tank 1 flows through the second controllable pipeline into the nozzle body 91, the hot water will flow out from the water outlet end of the nozzle body 91 to the upper surface of the nozzle 93, and then flow to the curved grooves 931 on the upper surface of the nozzle 93. Since the plurality of curved grooves 931 on the upper surface of the nozzle 93 are of the same curvature, the water flows in the nozzle. Different sides of the head 93 surface will produce different flow rates. According to Bernoulli's principle, the pressure on the side with a faster flow rate will decrease, while the pressure on the side with a slower flow rate will be relatively high. This pressure difference causes the nozzle 93 to be subjected to a lateral force, namely the Magnus force. Due to the action of the Magnus force, the nozzle 93 will be subjected to a torque that causes it to rotate around its own axis. This torque causes the nozzle 93 to self-rotate under the water flow pressure (in this embodiment, the nozzle 93 rotates in the opposite direction of the arc of the curved groove 931). As the nozzle 93 rotates, hot water is quickly and evenly sprayed on the inner wall of the pure water tank 2, thereby achieving the purpose of high-temperature sterilization and cleaning of the pure water tank 2.

[0046] Compared with the prior art design of the nozzle 93 in which the water flows through the opening inside the nozzle 93 to achieve spraying, the present embodiment can more easily achieve uniform distribution of the water flow on the surface of the nozzle 93 through the surface spray design of the nozzle 93, so that the spray coverage area is wider and the spraying effect is more uniform. Specifically, since the water flow does not pass through the small opening inside the nozzle 93, but is directly sprayed from the surface of the nozzle 93, the friction loss of the fluid inside the nozzle 93 is reduced, the efficiency of the water flow spraying is improved, and the problem of blockage of the nozzle 93 opening caused by the deposition of microbial impurities that may exist in the water flow is avoided. In addition, the nozzle 93 with internal openings may produce water hammer due to the sudden stop of the water flow, and the surface spray design provided in this embodiment can greatly reduce this phenomenon and extend the service life of the nozzle 93 and the water tank cleaning system.

[0047] Furthermore, in this embodiment, the nozzle 93 is configured as a curved surface convex toward the middle, and a plurality of curved grooves 931 are distributed on the upper surface of the nozzle 93 along the central axis of the nozzle 93 .

[0048] In this embodiment, in order to reduce the weight of the nozzle 93 and increase the self-rotation speed of the nozzle 93, the nozzle 93 is designed to have a certain thickness and a curved surface convex toward the middle. Furthermore, the curved surface of the nozzle 93 can also be designed as a circular curved surface to balance the stability of the nozzle 93 when rotating relative to the nozzle body 91, which is not limited in this embodiment.

[0049] It is understandable that the design of the curved grooves 931 distributed along the central axis of the nozzle 93 helps to achieve uniform water flow distribution on the surface of the nozzle 93 when the nozzle 93 rotates under the water flow pressure, making the spray coverage more uniform, and also helps the nozzle 93 to maintain balance and reduce vibration during self-rotation, thereby improving the stability of the nozzle 93, reducing the deviation of the nozzle 93 during the spraying process, and ensuring that the water flow is sprayed in the direction guided by the curved grooves 931. At the same time, the design of the curved grooves 931 distributed along the central axis of the nozzle 93 can better adapt to different flow conditions, because each curved groove 931 can evenly share the water flow, and the spray effect will not be significantly changed due to changes in flow.

[0050] Furthermore, in this embodiment, a plurality of curved grooves 931 are symmetrically distributed on the upper surface of the nozzle 93 along the central axis of the nozzle 93 , and the depths of two axially symmetrically distributed curved grooves 931 are different.

[0051] It can be understood that the curved grooves 931 are axially symmetrically distributed on the upper surface of the nozzle 93 along the central axis of the nozzle 93, and the depth of the curved grooves 931 can also be understood as the degree to which the curved grooves 931 are recessed downward, that is, the depth of the side wall of the curved grooves 931. The design of different depths of the two axially symmetrically distributed curved grooves 931 will cause the water flow to have different speeds and directions when passing through, thereby forming an uneven force distribution on the surface of the nozzle 93. This uneven force distribution can enhance the rotational power of the nozzle 93, making it easier for the nozzle 93 to achieve self-rotation under the action of water flow pressure.

[0052] In one embodiment of the present specification, a plurality of curved grooves 931 are distributed at equal intervals on the upper surface of the nozzle 93, and the depths of two adjacent curved grooves 931 are different.

[0053] Optionally, the depth and spacing of the curved grooves 931 can be adjusted according to different cleaning requirements to accommodate different water tank sizes and contamination levels.

[0054] The different depth designs of the two adjacent curved grooves 931 will cause the water flow to produce different spray angles and forces when it is sprayed, thereby forming a stronger water flow movement in the vertical direction, increasing the vertical upper and lower space coverage of the inner wall of the pure water tank 2 by hot water, thereby increasing the overall spray coverage of the inner wall of the pure water tank 2 by hot water, and moreover, the self-rotation of the nozzle 93 under the water flow pressure combined with the different depth designs of the two adjacent curved grooves 931 can produce a dynamically changing spray effect, that is, the water flow continuously changes direction and force during the spraying process, thereby being able to more effectively remove dirt and bacteria on the inner wall and improve the cleaning effect.

[0055] In one embodiment of the present specification, the cleaning nozzle 9 includes an outer sleeve 92, which is fixedly connected to the nozzle body 91. The bottom surface of the outer sleeve 92 is provided with an inwardly protruding water collection port. The middle part of the upper surface of the nozzle 93 is provided with a groove 932 matching the water collection port, and a plurality of curved grooves 931 are symmetrically distributed on the upper surface of the nozzle 93 along the circumference of the groove 932.

[0056] The design of the water gathering port on the bottom surface of the outer sleeve 92 helps to gather the water flow to the center of the nozzle 93. The matching design of the water gathering port and the groove 932 of the nozzle 93 can reduce the scattering of the water flow and ensure that the water flow flows from the groove 932 into the curved groove 931 in a concentrated manner, so that the water flow can be better guided and concentrated before being sprayed out, thereby enhancing the spraying force. At the same time, the area of ​​direct impact of the water flow on the nozzle 93 is reduced, thereby reducing wear and increasing the durability of the nozzle 93.

[0057] Please see attached Figure 4 , Figure 4 A flow chart of a control method for a water tank cleaning system of a heat and air purifier provided in one embodiment of the present specification is shown.

[0058] like Figure 4 As shown, the control method of the water tank cleaning system of the air conditioner and heat integrated machine is used to implement the water tank cleaning system of the air conditioner and heat integrated machine provided in the above embodiment, and at least includes the following steps:

[0059] Step 102, monitor the water levels of the pure water tank 2 and the heat tank 1, control the heat tank 1 to replenish water, and stop replenishing water when the water in the heat tank 1 reaches a predetermined water level.

[0060] Step 104, controlling the heat bulb 1 to perform a heating operation, and stopping the heating operation when a preset temperature is reached.

[0061] The water in the heat tank 1 can be heated to a boiling state to improve the sterilization and cleaning effect.

[0062] Step 106, close the third valve 8, the fourth valve 42 and the fifth valve 43 to disconnect the drainage pipeline (i.e., the third controllable pipeline) and the raw water inlet pipeline to prevent other pipelines from having an adverse effect on the execution of the cleaning system, and then control the first valve 6, the second valve 7 and the booster pump 41 to open so that the pressurized water flow impacts the cleaning nozzle 9 on the water inlet of the pure water tank 2, so as to realize the self-rotation of the cleaning nozzle 9 to spray hot water on the inner wall of the pure water tank 2 to realize the cleaning operation of the pure water tank 2;

[0063] Step 108, when the water level of the pure water tank 2 reaches the highest point or the water level of the hot tank 1 reaches the lowest point, close the first valve 6, the second valve 7 and the booster pump 41, and stop the cleaning operation of the pure water tank 2;

[0064] Step 110, calculating the drainage time, and controlling the third valve 8 and the second water pump 21 to open within the drainage time to drain water.

[0065] Furthermore, in this embodiment, in step 110, calculating the drainage time includes:

[0066] Obtain the water flow rate when the second water pump 21 is in operation and the volume of the pure water tank 2 at the highest water level;

[0067] The drainage time is obtained by quotient the volume of the pure water tank 2 at the highest water level point and the water flow rate when the second pump 21 is running.

[0068] It can be understood that by calculating the drainage time, it can ensure that the sewage in the pure water tank 2 after the cleaning operation is completely emptied, avoiding the situation where the drainage is incomplete due to the low sensitivity or error of the water level sensor, thereby avoiding the pollution problem caused by the clean residual water in the pure water tank 2. Moreover, since the drainage time is a mathematical calculation based on the water flow and volume, it is not affected by the false alarm or failure of the water level sensor, which improves the reliability of the water tank cleaning system to a certain extent.

[0069] Furthermore, in this embodiment, after step 110, the following steps are also included:

[0070] Step 112, execute steps 102 to 110 again to clean the pure water tank 2 for a second time.

[0071] Through the secondary cleaning operation, it can ensure that the dirt or bacteria that may remain during the first cleaning process are further removed, further improve and optimize the cleaning process, and ensure that the expected cleaning effect of the water tank cleaning system is achieved.

[0072] The above descriptions are only preferred embodiments disclosed in this application and descriptions of the technical principles used. Those skilled in the art should understand that the scope of protection involved in this disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in this disclosure (but not limited to) to form a technical solution.

[0073] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

Claims

1. The water tank cleaning system of the heat and air purifier is characterized by: include: A first controllable pipeline, a second controllable pipeline, a third controllable pipeline and a cleaning nozzle, one end of the first controllable pipeline is connected to the water outlet of the hot tank, the other end of the first controllable pipeline is connected to the water inlet of the booster pump, one end of the second controllable pipeline is connected to the water outlet of the booster pump, the other end of the second controllable pipeline is connected to the water inlet of the cleaning nozzle, the cleaning nozzle is arranged at the water inlet of the pure water tank, the cleaning nozzle is used to self-rotate under water flow pressure to spray hot water on the inner wall of the pure water tank, one end of the third controllable pipeline is connected to the water outlet of the pure water tank, and the other end of the third controllable pipeline is connected to the drain.

2. The water tank cleaning system of the air conditioner and heat integrated machine according to claim 1, characterized in that: A first valve is arranged on the first controllable pipeline, a second valve is arranged on the second controllable pipeline, a third valve is arranged on the third controllable pipeline, a fourth valve is arranged between the water inlet end of the booster pump and the first water outlet end of the composite filter element, and a fifth valve is arranged between the water outlet end of the booster pump and the second water inlet end of the composite filter element.

3. The water tank cleaning system of the air conditioner and heat integrated machine according to claim 1, characterized in that: The cleaning nozzle includes a nozzle body and a nozzle. The nozzle body is arranged at the water inlet of the pure water tank. The water inlet end of the nozzle body is fixedly connected to one end of the second controllable pipeline. The water outlet end of the nozzle body is rotatably connected to the middle of the nozzle. The upper surface of the nozzle is provided with a plurality of curved grooves with the same curvature, so that water flows through the inside of the nozzle body and then flows from the water outlet end of the nozzle body into the plurality of curved grooves on the upper surface of the nozzle and then sprays out along the curved grooves, thereby realizing self-rotating spraying of the nozzle.

4. The water tank cleaning system of the air conditioner and heat integrated machine according to claim 3, characterized in that: The nozzle is configured as a curved surface convex toward the middle, and a plurality of curved grooves are distributed on the upper surface of the nozzle along the central axis of the nozzle.

5. The water tank cleaning system of the air conditioner and heat integrated machine according to claim 4, characterized in that: A plurality of the curved grooves are symmetrically distributed on the upper surface of the nozzle along the central axis of the nozzle, and the depths of the two axially symmetrically distributed curved grooves are different.

6. The water tank cleaning system of the air conditioner and heat integrated machine according to claim 4, characterized in that: A plurality of the curved grooves are distributed on the upper surface of the nozzle at equal intervals, and the depths of two adjacent curved grooves are different.

7. The water tank cleaning system of the air conditioner and heat integrated machine according to claim 4, characterized in that: The cleaning nozzle includes an outer sleeve, which is fixedly connected to the nozzle body. The bottom surface of the outer sleeve is provided with an inwardly protruding water gathering port. The middle part of the upper surface of the nozzle is provided with a groove matching the water gathering port. A plurality of curved grooves are symmetrically distributed on the upper surface of the nozzle along the circumference of the groove.

8. A control method for a water tank cleaning system of a heat and air purifier, used to implement the water tank cleaning system of a heat and air purifier as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Step 102, monitoring the water levels of the pure water tank and the heat tank, and controlling the heat tank to replenish water until the water in the heat tank reaches a predetermined water level and stops replenishing water; Step 104, controlling the heat bulb to perform a heating operation, and stopping the heating operation when a preset temperature is reached; Step 106, close the third valve, the fourth valve and the fifth valve, and control the first valve, the second valve and the booster pump to open so that the pressurized water flow impacts the cleaning nozzle on the water inlet of the pure water tank; Step 108, when the water level in the pure water tank reaches the highest point or the water level in the hot water tank reaches the lowest point, close the first valve, the second valve and the booster pump; Step 110, calculating the drainage time, and controlling the third valve and the second water pump to open within the drainage time to drain water.

9. The control method of the water tank cleaning system of the air conditioner and heat integrated machine according to claim 8, characterized in that: In step 110, the drainage time is calculated, including: Obtain the water flow rate when the second water pump is running and the volume of the pure water tank at the highest water level; The drainage time is obtained by quotient the volume of the pure water tank at the highest water level point and the water flow rate when the second pump is running.

10. The control method of the water tank cleaning system of the air conditioner and heat integrated machine according to claim 8, characterized in that: After step 110, the following steps are further included: Step 112, execute steps 102 to 110 again to perform secondary cleaning on the pure water tank.

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