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 and a cleaning nozzle, the water inlet end of the first controllable pipeline is connected with the water outlet end of a first water suction pump, the water outlet end of the first controllable pipeline is connected with the water inlet end of the cleaning nozzle, and the cleaning nozzle is arranged at a water inlet of a pure water tank. The cleaning nozzle is used for self-rotating under the water flow pressure so as to spray hot water on the inner wall of the pure water tank, the water inlet end of the second controllable pipeline is connected with the water outlet of the pure water tank, and the water outlet end of the second controllable pipeline is connected with the water outlet. The advantage of space saving of the purification and heating all-in-one machine is maintained, meanwhile, efficient cleaning of the pure water tank is achieved, the self-purification capacity of the purification and heating all-in-one machine is effectively improved, and cleanliness and safety of water in the pure water tank in the long-term use process are guaranteed.

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 and a cleaning nozzle, the water inlet end of the first controllable pipeline is connected to the water outlet end of a first water pump, the water outlet end of the first controllable pipeline is connected to the water inlet end of the cleaning nozzle, the cleaning nozzle is arranged at the water inlet of a pure water tank, the cleaning nozzle is used to rotate under water flow pressure to spray hot water on the inner wall of the pure water tank, the water inlet end of the second controllable pipeline is connected to the water outlet of the pure water tank, and the water outlet end of the second controllable pipeline is connected to a drain.

[0008] In some embodiments, a first valve is disposed on the first controllable pipeline, and a second valve is disposed on the second controllable pipeline.

[0009] In some embodiments, the cleaning nozzle includes a nozzle body and a swing arm 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 the water outlet end of the first controllable pipeline, the water outlet end of the nozzle body is rotatably connected to the middle part of the swing arm nozzle, and the lower surface of the swing arm nozzle is provided with several pairs of oppositely inclined oblique nozzle water outlets, and each pair of oppositely inclined oblique nozzle water outlets is respectively located at both ends of the lower surface of the swing arm nozzle.

[0010] In some embodiments, each pair of oppositely inclined oblique nozzle water outlets are symmetrically distributed on the lower surface of the swing arm sprinkler along the central axis of the swing arm sprinkler.

[0011] In some embodiments, at least one pair of oppositely inclined oblique nozzle water outlets are arranged in a direction perpendicular to the transverse centerline of the swing arm spray head.

[0012] In some embodiments, the cleaning nozzle includes an outer sleeve, which is fixedly connected to the nozzle body, and the water outlet end of the outer sleeve is provided with a water gathering port protruding downward, and the middle part of the upper surface of the swing arm nozzle is provided with a convex groove, and the convex groove of the swing arm nozzle is located in the water gathering port of the outer sleeve, and the convex groove and the water gathering port are gap-matched, and the water outlet end of the outer sleeve is rotatably connected to the middle part of the swing arm nozzle.

[0013] In some embodiments, the cleaning nozzle includes a rotating connector, which is located in a convex groove, a water inlet end of the rotating connector transitionally fits with a water inlet end of a water gathering port, and a water outlet end of the rotating connector is clamped with a water outlet end of the convex 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 second valve, control the first valve and the first water 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 and the first water pump;

[0019] Step 110, calculating the drainage time, and controlling the second 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 dividing the volume at the highest point of the pure water tank by 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 used. Based on the existing pipelines of the integrated heat and air purifier, a miniaturized high-efficiency circulation cleaning system is cleverly designed through subtle structural design. While maintaining the space-saving advantage of the integrated heat and air purifier, efficient cleaning of the pure water tank is achieved. Specifically, by adding only two controllable pipelines and a small cleaning nozzle on the basis of the existing pipelines, the hot water stored in the hot tank is transported to the water inlet of the pure water tank during the cleaning operation. Combined with the creative design of the first water pump and the cleaning nozzle in the existing pipeline, the system is cleverly utilized. The first water pump pressurizes the hot water waterway, so that the hot water pressure that finally enters the pure water tank is relatively large, impacting the cleaning nozzle. The cleaning nozzle rotates under the water flow pressure, so that the hot water entering the pure water tank forms a spray state, thereby better high-temperature sterilization and flushing the inner wall of the water tank. Combined with the drainage of the second controllable pipeline, high-temperature cleaning of the circulating flow of the pure water tank is achieved, effectively improving the self-cleaning ability of the heat and clean machine, ensuring the cleanliness and safety of the water quality inside the pure water tank during long-term use, and at the same time, compared with the ultraviolet sterilization lamp used in the prior art, it greatly reduces the potential damage to the water tank material;

[0027] 2. In the existing self-rotating nozzle technology, the nozzle body is designed as a U-shaped tube, the two sides of the U-shaped tube are connected by a connecting tube, the water inlet pipe is rotatably connected to the middle of the connecting tube through a suspension device, and the water flows through the spray holes arranged opposite to each other on the two side walls of the U-shaped tube to realize the technical solution of self-rotating spraying. However, in the U-shaped tube design of the existing nozzle body, the water will first flow into the bottom of the U-shaped tube from the horizontal connecting tube until the water in the U-shaped tube accumulates to the height of the spray hole and then flows out from the spray holes on the two side walls of the U-shaped tube. This structure not only limits the direction and path of the water flow, so that the water flow cannot be sprayed at different angles and directions like the swing arm nozzle, thereby affecting the coverage and uniformity of the spray, but also due to the structural limitations of the U-shaped tube, it is difficult for the water flow to produce sufficient speed changes at the spray hole, resulting in unsatisfactory spraying effect, especially difficult to be used in occasions such as cleaning the inner wall of the water tank, which requires a higher spray speed to achieve a good cleaning effect. The swing arm nozzle design adopted in this embodiment, combined with the reverse inclination design of the oblique nozzle water outlet at both ends of the lower surface of the swing arm nozzle, can change the water flow path and produce different flow rates and pressure distributions. It can not only realize self-rotation under the water flow pressure, but also better realize the rapid and uniform spray cleaning of the inner wall of the pure water tank by water flow. At the same time, it makes the spray coverage area wider and the spray effect more uniform, so as to adapt to the application scenario of cleaning the inner wall of the water tank which requires a higher spray speed to achieve a good cleaning effect.

[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 bottom view of the structure of the cleaning nozzle according to an embodiment of the present invention.

[0034] Figure 5 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.

[0035] Among them: 1. hot tank, 11. first water pump, 2. pure water tank, 21. second water pump, 3. faucet, 4. composite filter element, 41. booster pump, 5. drain outlet, 6. first valve, 7. second valve, 8. cleaning nozzle, 81. nozzle body, 82. swing arm nozzle, 821. oblique nozzle outlet, 822. convex groove, 83. outer sleeve, 84. rotating connector. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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 and a cleaning nozzle 8. The water inlet end of the first controllable pipeline is connected to the water outlet end of the first water pump 11, and the water outlet end of the first controllable pipeline is connected to the water inlet end of the cleaning nozzle 8. The cleaning nozzle 8 is arranged at the water inlet of the pure water tank 2. The cleaning nozzle 8 is used to rotate under the water flow pressure to spray hot water on the inner wall of the pure water tank 2. The water inlet end of the second controllable pipeline is connected to the water outlet of the pure water tank 2, and the water outlet end of the second controllable pipeline is connected to the drain 5.

[0040] Among them, the first controllable pipeline and the second controllable pipeline are respectively provided with valve devices for controlling the water flow of the pipeline. 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.

[0041] 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 8 is arranged at the second water inlet, that is, the cleaning nozzle 8 serves as an intermediate piece between the first 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 8 when the pure water heat machine normally stores room temperature water and passes through the cleaning nozzle 8, while reducing the frequency of use of the cleaning nozzle 8 and extending the service life of the cleaning nozzle 8.

[0042] It can be understood that in this embodiment, based on the pipeline of the existing all-in-one heat and air purifier, a miniaturized high-efficiency circulation cleaning system is cleverly designed through a subtle structural design, which achieves efficient cleaning of the pure water tank 2 while maintaining the space-saving advantage of the all-in-one heat and air purifier. Specifically, by adding only two controllable pipelines and a small cleaning nozzle 8 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 creative design of the first water pump 11 and the cleaning nozzle 8 in the existing pipeline is combined to cleverly utilize the first water pump 11 to clean the pure water tank 2. 1. The hot water water circuit is pressurized so that the hot water pressure finally entering the pure water tank 2 is relatively large, impacting the cleaning nozzle 8. The cleaning nozzle 8 rotates under the water flow pressure, so that the hot water entering the pure water tank 2 forms a spraying state, thereby better high-temperature sterilization and flushing of the inner wall of the water tank. Combined with the drainage of the second controllable pipeline, high-temperature cleaning of the circulating flow of the pure water tank 2 is achieved, effectively improving the self-cleaning ability of the pure water tank heat machine, ensuring the cleanliness and safety of the water quality inside the pure water tank 2 during long-term use, and at the same time, compared with the ultraviolet sterilization lamp used in the prior art, the potential damage to the water tank material is greatly reduced.

[0043] In one embodiment of the present specification, a first valve 6 is provided on the first controllable pipeline, and a second valve 7 is provided on the second controllable pipeline.

[0044] It can be understood that setting the first valve 6 on the first controllable pipeline can avoid the adverse effect of the operation of the first water pump 11 on the pressure generated by the cleaning nozzle 8 when the air conditioner and heat machine normally discharges hot water from the faucet 3, thereby extending the life of the cleaning nozzle 8. At the same time, the setting of the first valve 6 and the second valve 7 also provides support for controlling the flow direction of water in the air conditioner and heat machine when executing the cleaning system.

[0045] Please see attached Figure 3 and attached Figure 4 , Figure 3 The structure explosion diagram of the cleaning nozzle 8 provided in one embodiment of the present specification is shown. Figure 4 A bottom view of the structure of a cleaning nozzle 8 provided in one embodiment of the present specification is shown.

[0046] like Figure 3 and Figure 4 As shown, the cleaning nozzle 8 may at least include a nozzle body 81 and a swing arm nozzle 82. The nozzle body 81 is arranged at the water inlet of the pure water tank 2. The water inlet end of the nozzle body 81 is fixedly connected to the water outlet end of the first controllable pipeline. The water outlet end of the nozzle body 81 is rotatably connected to the middle part of the swing arm nozzle 82. The lower surface of the swing arm nozzle 82 is provided with a plurality of pairs of oppositely inclined oblique nozzle water outlets 821, and each pair of oppositely inclined oblique nozzle water outlets 821 are respectively located at the two ends of the lower surface of the swing arm nozzle 82.

[0047] It can be understood that the pair of oppositely inclined oblique spout water outlets 821 includes two oblique spout water outlets 821 .

[0048] Preferably, in this embodiment, the two oppositely inclined oblique nozzle water outlets 821 in each pair have opposite inclination directions but the same inclination angles, thereby ensuring that the water flow is evenly distributed in all directions, improving the stability of the swing arm nozzle 82 during operation, and achieving uniform cleaning of the inner wall of the pure water tank 2.

[0049] The inclination angle of the oblique nozzle water outlet 821 in this embodiment can be adjusted according to different cleaning requirements to adapt to different cleaning areas and pollution levels of the inner wall of the pure water tank 2, which is not limited in this embodiment.

[0050] If the inner wall of the pure water tank 2 needs to be cleaned more strongly, the inclination angle of the oblique nozzle water outlet 821 can be set to be larger, so that the water flow can hit the inner wall with stronger force when spraying, thereby more effectively removing dirt and bacteria and improving the cleaning effect;

[0051] If it is necessary to clean the corners or edges of the inner wall of the pure water tank 2, the inclination angle of the oblique nozzle water outlet 821 can be adjusted to form a certain angle with the inner wall, so that the water flow can be directly sprayed to these hard-to-reach areas, thereby 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;

[0052] If it is necessary to clean pure water tanks 2 of different sizes, the inclination angle of the oblique nozzle water outlet 821 can be adjusted so that the water flow can adapt to the inner wall of the pure water tank 2 of different sizes, thereby achieving effective hot water spray cleaning.

[0053] Furthermore, since the water flow needs to pass through the interior of the nozzle and then be sprayed out through the oblique nozzle outlet 821, there will inevitably be friction losses between the fluid and the interior of the nozzle and blockage of the nozzle outlet caused by the deposition of microbial impurities that may exist in the water flow. Therefore, in this embodiment, the swing arm nozzle 82 can be designed as a fixed connection between the upper shell of the swing arm nozzle 82 and the lower shell of the swing arm nozzle 82. The connection design of the upper shell and the lower shell allows each part of the swing arm nozzle 82 (such as the connection structure with the nozzle body 81, the oblique nozzle outlet 821 structure on the lower surface of the nozzle, etc.) to be independently designed and optimized to meet different application requirements, such as rotational connection stability, water flow control, pressure distribution, etc., and at the same time, the swing arm nozzle 82 can be replaced and maintained more conveniently.

[0054] It can be understood that in the present embodiment, the nozzle body 81 is fixedly installed at the water inlet of the pure water tank 2, the water inlet end of the nozzle body 81 is connected to the first controllable pipeline, the middle part of the swing arm nozzle 82 is rotatably connected to the water outlet end of the nozzle body 81, and a plurality of pairs of reversely inclined oblique nozzle water outlets 821 are arranged on the lower surface of the swing arm nozzle 82, and each pair of reversely inclined oblique nozzle water outlets 821 are respectively located at the two ends of the lower surface of the swing arm nozzle 82. Therefore, when the hot water in the hot tank 1 flows through the first controllable pipeline into the nozzle body 81, the hot water will flow out from the water outlet end of the nozzle body 81 to the inside of the swing arm nozzle 82, and then be sprayed out through the oblique nozzle water outlet 821 on the lower surface of the swing arm nozzle 82. Since the plurality of pairs of oblique nozzle water outlets 821 on the lower surface of the swing arm nozzle 82 are reversely inclined and each pair of reversely inclined oblique nozzle water outlets 821 are respectively located on the lower surface of the swing arm nozzle 82 The two ends of the surface, therefore, due to the angle and shape structure of the oblique nozzle water outlet 821, the water flow path will change when the water flows through the oblique nozzle water outlet 821, thereby producing different flow rates. According to the Bernoulli 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 swing arm nozzle 82 to be subjected to a lateral force, namely the Magnus force. Due to the action of the Magnus force, combined with the reverse inclination design of the oblique nozzle water outlet 821 at each end of the lower surface of the swing arm nozzle 82, the swing arm nozzle 82 will be subjected to a torque causing it to rotate around its own axis. This torque causes the swing arm nozzle 82 to self-rotate under the water flow pressure. As the swing arm nozzle 82 self-rotates, hot water is quickly and evenly sprayed on the inner wall of the pure water tank 2 through the oblique nozzle water outlet 821, thereby achieving the purpose of high-temperature spray cleaning of the pure water tank 2.

[0055] At present, in the existing self-rotating nozzle technology, the nozzle body is designed as a U-shaped tube, the two sides of the U-shaped tube are connected by a connecting tube, the water inlet pipe is rotatably connected to the middle of the connecting tube through a suspension device, and the water flows through the spray holes arranged opposite to each other on the two side walls of the U-shaped tube to realize the technical solution of self-rotating spraying. However, like the U-shaped tube design of the existing nozzle body, the water flow will first flow into the bottom of the U-shaped tube from the horizontal connecting tube until the water in the U-shaped tube accumulates to the height of the spray hole and then flows out from the spray holes on the two side walls of the U-shaped tube. This structure not only limits the direction and path of the water flow, so that the water flow cannot be sprayed at different angles and directions like the swing arm nozzle 82, thereby affecting the coverage and uniformity of the spray, but also due to the structural limitation of the U-shaped tube, it is difficult for the water flow to produce sufficient speed changes at the spray hole, resulting in an unsatisfactory spray effect, especially difficult to be applied to the occasion of cleaning the inner wall of the water tank, which requires a higher spray speed to achieve a good cleaning effect. The swing arm nozzle 82 design adopted in this embodiment, combined with the reverse inclined design of the oblique nozzle water outlet 821 at both ends of the lower surface of the swing arm nozzle 82, can change the water flow path and produce different flow rates and pressure distributions. It can not only realize self-rotation under the water flow pressure, but also better realize the rapid and uniform spray cleaning of the inner wall of the pure water tank 2 by the water flow, while making the spray coverage area wider and the spraying effect more uniform, so as to adapt to the application scenario of cleaning the inner wall of the water tank, which requires a higher spray speed to achieve a good cleaning effect.

[0056] Furthermore, in the present embodiment, each pair of oppositely inclined oblique nozzle water outlets 821 is symmetrically distributed on the lower surface of the swing arm nozzle 82 along the central axis of the swing arm nozzle 82 .

[0057] It is understandable that the symmetrical distribution design of the central axis of each pair of oppositely inclined oblique nozzle water outlets 821 helps to achieve uniform water flow distribution on the lower surface of the swing arm nozzle 82 when the swing arm nozzle 82 rotates under the water flow pressure, making the spray coverage more uniform, and also helps the swing arm nozzle 82 to maintain balance and reduce vibration during self-rotation, thereby improving the stability of the swing arm nozzle 82, reducing the deviation of the swing arm nozzle 82 during the spraying process, and ensuring that the water flow is sprayed in the direction guided by the oblique nozzle water outlet 821. At the same time, the symmetrical design of each pair of oblique nozzle water outlets 821 along the central axis of the swing arm nozzle 82 can better adapt to different flow conditions, because each oblique nozzle water outlet 821 in a pair can evenly share the water flow, and the spray effect will not be significantly changed due to changes in flow.

[0058] Furthermore, in the present embodiment, at least one pair of oppositely inclined oblique nozzle water outlets 821 is arranged in a direction perpendicular to the transverse center line of the swing arm spray head 82 .

[0059] Among them, in this embodiment, the number of pairs of oblique nozzle water outlets 821 arranged in a direction perpendicular to the horizontal center line of the swing arm nozzle 82 is one pair or more, and this embodiment does not limit this.

[0060] It can be understood that, in the present embodiment, the transverse centerline of the swing arm nozzle 82 is the centerline between the longer two sides of the swing arm nozzle 82. Therefore, the direction perpendicular to the transverse centerline of the swing arm nozzle 82 is the direction of the transverse force (i.e., the Magnus force) exerted on the swing arm nozzle 82 under the water flow pressure. At the same time, combined with the design of a pair of oblique nozzle water outlets 821 with opposite inclination directions, the water flow directly generates opposite lateral forces when passing through the pair of oblique nozzle water outlets 821 arranged in a direction perpendicular to the transverse centerline of the swing arm nozzle 82, thereby further enhancing the rotational power of the swing arm nozzle 82, making it easier for the swing arm nozzle 82 to achieve self-rotation under the action of water flow pressure.

[0061] Furthermore, in this embodiment, the cleaning nozzle 8 includes an outer sleeve 83, which is fixedly connected to the nozzle body 81, and the water outlet end of the outer sleeve 83 is provided with a water collecting port protruding downward, and a convex groove 822 is provided in the middle of the upper surface of the swing arm nozzle 82, and the convex groove 822 of the swing arm nozzle 82 is located in the water collecting port of the outer sleeve 83, and the convex groove 822 is matched with the water collecting port gap, and the water outlet end of the outer sleeve 83 is rotatably connected to the middle of the swing arm nozzle 82.

[0062] Among them, clearance fit refers to a fit mode in which there is a certain gap between two mating parts. In the clearance fit mode, the mating parts can move relative to each other without being damaged due to excessive pressure, but this movement is within a certain range. In this embodiment, the size of the gap between the water collection port and the convex groove 822 of the swing arm nozzle 82 can be determined by the actual situation of the cleaning nozzle 8, as long as it can ensure that the self-rotation movement of the swing arm nozzle 82 will not be hindered and will not cause wear or damage between the mating parts. This embodiment does not limit this.

[0063] The design of the water gathering port at the water outlet end of the outer sleeve 83 helps to gather the water flow to the center of the swing arm nozzle 82, reduce the scattering of the water flow, and ensure that the water flow flows into the inside of the swing arm nozzle 82 from the convex groove 822 in a concentrated manner, so that the water flow can be better guided and concentrated before being sprayed out, thereby enhancing the spraying force to a certain extent, and also reducing the area of ​​direct impact of the water flow on the swing arm nozzle 82, reducing wear and increasing the durability of the swing arm nozzle 82. At the same time, the clearance fit design between the water gathering port and the convex groove 822 of the swing arm nozzle 82 is combined to avoid direct contact between the two, thereby reducing the friction between the water gathering port and the convex groove 822 of the swing arm nozzle 82, ensuring that the swing arm nozzle 82 can rotate freely without being constrained by the outer sleeve 83, thereby maintaining the self-rotation effect of the swing arm nozzle 82.

[0064] Furthermore, in this embodiment, the cleaning nozzle 8 includes a rotating connecting member 84, which is located in the convex groove 822, the water inlet end of the rotating connecting member 84 is transitionally matched with the water inlet end of the water gathering port, and the water outlet end of the rotating connecting member 84 is clamped with the water outlet end of the convex groove 822.

[0065] Among them, transition fit refers to a connection method between interference fit and clearance fit. It is neither a fixed connection produced by interference fit nor a relative movement produced by clearance fit, but has characteristics between the two. Transition fit is suitable for occasions that require a certain amount of space for movement but need to remain relatively stable.

[0066] Through the design of transition fit between the water inlet end of the rotating connecting piece 84 and the water inlet end of the water gathering port, there is a certain movable space between the matching surfaces of the rotating connecting piece 84 and the water gathering port, allowing the rotating connecting piece 84 to rotate or slightly move relative to the outer sleeve 83, so that during the self-rotation of the swing arm nozzle 82, the swing arm nozzle 82 and the outer sleeve 83 can maintain relative stability and adapt to the mechanical vibration generated by the self-rotation of the swing arm nozzle 82. At the same time, since the characteristics of the transition fit are between the fixed connection and the movable connection, it can be more suitable for occasions where the swing arm nozzle 82 needs to be replaced and maintained. Combined with the clip-on design of the water outlet end of the rotating connecting piece 84 and the water outlet end of the convex groove 822, the accidental falling off of the swing arm nozzle 82 due to loose connection can be reduced, thereby improving the safety of the use of the cleaning nozzle 8. At the same time, the clip-on design makes the installation and disassembly of the swing arm nozzle 82 more convenient, which is beneficial to the replacement and cleaning of the swing arm nozzle 82.

[0067] Please see attached Figure 5 , Figure 5 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.

[0068] like Figure 5 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:

[0069] 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.

[0070] Step 104, controlling the heat bulb 1 to perform a heating operation, and stopping the heating operation when a preset temperature is reached.

[0071] The water in the heat tank 1 can be heated to a boiling state to improve the sterilization and cleaning effect.

[0072] Step 106, close the second valve 7 to disconnect the drainage pipeline (i.e., the second controllable pipeline) to prevent other pipelines from having an adverse effect on the execution of the cleaning system, and then open the first valve 6 and the first water pump 11 to allow the pressurized water flow to impact the cleaning nozzle 8 on the water inlet of the pure water tank 2, thereby achieving self-rotation of the cleaning nozzle 8 to spray hot water on the inner wall of the pure water tank 2 to achieve the cleaning operation of the pure water tank 2.

[0073] Among them, since the operation of the first water pump 11 has no effect on the raw water inlet pipeline and is only related to the water in the heat tank 1, the present embodiment does not need to consider the on-off of the raw water inlet pipeline.

[0074] Step 108, when the water level of the pure water tank 2 reaches the highest point or the water level of the heat tank 1 reaches the lowest point, close the first valve 6 and the first water pump 11, and stop the cleaning operation of the pure water tank 2;

[0075] Step 110, calculating the drainage time, and controlling the second valve 7 and the second water pump 21 to open within the drainage time to drain water.

[0076] Furthermore, in this embodiment, in step 110, calculating the drainage time includes:

[0077] 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;

[0078] 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.

[0079] 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.

[0080] Furthermore, in this embodiment, after step 110, the following steps are also included:

[0081] Step 112, execute steps 102 to 110 again to clean the pure water tank 2 for a second time.

[0082] 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.

[0083] 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.

[0084] 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 and a cleaning nozzle, the water inlet end of the first controllable pipeline is connected to the water outlet end of the first water pump, the water outlet end of the first controllable pipeline is connected to the water inlet end 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 the water flow pressure to spray hot water on the inner wall of the pure water tank, the water inlet end of the second controllable pipeline is connected to the water outlet of the pure water tank, and the water outlet end of the second 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: The first controllable pipeline is provided with a first valve, and the second controllable pipeline is provided with a second valve.

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 swing arm 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 the water outlet end of the first controllable pipeline, the water outlet end of the nozzle body is rotatably connected to the middle part of the swing arm nozzle, and the lower surface of the swing arm nozzle is provided with several pairs of oppositely inclined oblique nozzle water outlets, and each pair of oppositely inclined oblique nozzle water outlets is respectively located at the two ends of the lower surface of the swing arm nozzle.

4. The water tank cleaning system of the air conditioner and heat integrated machine according to claim 3, characterized in that: Each pair of oppositely inclined oblique nozzle water outlets is symmetrically distributed on the lower surface of the swing arm sprinkler head along the central axis of the swing arm sprinkler head.

5. The water tank cleaning system of the air conditioner and heat integrated machine according to claim 4, characterized in that: At least one pair of oppositely inclined oblique nozzle water outlets is arranged in a direction perpendicular to the transverse center line of the swing arm sprinkler.

6. The water tank cleaning system of the air conditioner and heat integrated machine as claimed in claim 3, characterized in that: The cleaning nozzle includes an outer sleeve, which is fixedly connected to the nozzle body; a water outlet end of the outer sleeve is provided with a water collecting port protruding downward; a convex groove is provided in the middle of the upper surface of the swing arm nozzle; the convex groove of the swing arm nozzle is located in the water collecting port of the outer sleeve; the convex groove and the water collecting port are gap-matched; the water outlet end of the outer sleeve is rotatably connected to the middle of the swing arm nozzle.

7. The water tank cleaning system of the air conditioner and heat integrated machine according to claim 6, characterized in that: The cleaning nozzle comprises a rotating connecting piece, the rotating connecting piece is located in the convex groove, the water inlet end of the rotating connecting piece is transitionally matched with the water inlet end of the water gathering port, and the water outlet end of the rotating connecting piece is clamped with the water outlet end of the convex 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 second valve, control the first valve and the first 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 and the first water pump; Step 110, calculating the drainage time, and controlling the second 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 dividing the volume at the highest point of the pure water tank by 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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