Fish tank and control method

Abstract

The embodiment of the invention discloses a fish tank and a control method. The fish tank comprises a tank body, a cabinet body, a sewage treatment assembly, a tank opening water feeding pipe and a water inlet assembly. According to the fish tank provided by the embodiment of the invention, when water needs to be supplemented or replaced, the water inlet assembly can be opened, external water can be conveyed to the heating module after particles and residual chlorine are removed through the filtering unit, the heating module can heat the water, and the water can be supplied to the tank body after the water temperature reaches the fish feeding standard. When the water tank is used for the first time, a user can communicate one end of the tank opening water supply pipe to a tap water pipe of a user home, then the tap water pipe is opened, water of the user home can enter the tank body through the tank opening water supply pipe, the tank body is filled with external water, and the external water can overflow to the sewage treatment assembly along with the increase of time; the tank opening process does not depend on manual carrying of clear water, tap water can be directly introduced into the fish tank, complex operation is not needed, and the fish tank is more convenient to use.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of fish tanks, and in particular to a fish tank and a control method. Background Art

[0002] Traditional fish tanks don't have an automatic water change function. To change the water in a fish tank, you first need to collect a certain volume of tap water in a container and place it on the balcony to dry for a few days. This ensures that any residual chlorine and other harmful substances in the tap water are completely decomposed and that the tap water is at the same temperature as the surrounding water.

[0003] After a few days of drying the water, when the water in the container reaches the required water change volume, drain the fish tank to a certain volume and then add the water from the container to the fish tank. This process may require stopping the circulating water pump and manual drainage and water addition, which is time-consuming and labor-intensive, and may also stain the floor at home.

[0004] In addition, for fish tanks in traditional technology, when users open the tank, they need to use a container to hold a large amount of water to clean the fish tank and build a basic living environment for the fish. During the process of opening the tank, users need to hold a large amount of water, which is inconvenient. Especially for fish tanks with bottom filtration function, users need to fill a large amount of water to complete the opening of the fish tank. Summary of the Invention

[0005] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. This section of the invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0007] To this end, a first aspect of the present invention provides a fish tank.

[0008] A second aspect of the present invention provides a control method.

[0009] In view of this, according to a first aspect of an embodiment of the present application, a fish tank is provided, comprising:

[0010] Cylinder body;

[0011] a cabinet body, on which the cylinder body is arranged;

[0012] A sewage treatment assembly is disposed in the cabinet and includes a water inlet pipe and a circulation pipe. One end of the water inlet pipe is connected to the cylinder, and the other end is connected to the input end of the sewage treatment assembly. One end of the circulation pipe is connected to the output end of the sewage treatment assembly, and the other end is connected to the cylinder.

[0013] A water pipe for opening the cylinder, one end of which is connected to the circulation pipe;

[0014] A water inlet component includes a filter unit, a heating module and an external water pipe. The external water pipe is connected to the filter unit. The output end of the filter unit is connected to the heating module. The output end of the heating module is connected to the output end of the sewage treatment component.

[0015] In a feasible embodiment, the heating module includes:

[0016] Heating tube;

[0017] a second temperature measuring element and a third temperature measuring element, wherein the second temperature measuring element is arranged at the input end of the heating tube, and the third temperature measuring element is arranged at the output end of the heating tube, and the second temperature measuring element and the third temperature measuring element are used to detect the temperature of the liquid flowing through the heating tube;

[0018] A first temperature-controlled switch and a second temperature-controlled switch, wherein the first temperature-controlled switch and the second temperature-controlled switch are both connected to the heating element of the heating tube, the first temperature-controlled switch is arranged at the input end of the heating tube, and the second temperature-controlled switch is arranged at the output end of the heating tube.

[0019] In a feasible embodiment, the heating module further includes:

[0020] a third shell, wherein the heating tube is arranged in the third shell;

[0021] Wherein, the first temperature-controlled switch and the second temperature-controlled switch are both connected to the third housing and connected to the heating element of the heating tube through the third housing;

[0022] a third temperature-controlled switch, the third temperature-controlled switch being connected to the heating element of the heating tube and being arranged between the first temperature-controlled switch and the second temperature-controlled switch;

[0023] The disconnection temperature of the third temperature-controlled switch is greater than the disconnection temperature of the first temperature-controlled switch and greater than the disconnection temperature of the second temperature-controlled switch.

[0024] In a feasible embodiment, the heating module further includes:

[0025] a power supply circuit and a main control circuit, wherein the second temperature-controlled switch is connected to the main control circuit, the first temperature-controlled switch is connected to the power supply circuit, the third temperature-controlled switch is connected to the power supply circuit and / or the main control circuit, and the main control circuit is connected to the power supply circuit;

[0026] When the second temperature-controlled switch reaches a first temperature threshold, a first signal is sent to the main control circuit to disconnect the power circuit through the main control circuit; when the first temperature-controlled switch reaches a first temperature threshold, the power circuit is controlled to be disconnected.

[0027] In a feasible embodiment, the heating tube includes:

[0028] The tube body, the heating element includes a heating circuit, and the heating circuit is plated on the tube body;

[0029] A flow guide pipe, the flow guide pipe is arranged in the pipe body, and a flow gap is formed between the flow guide pipe and the inner wall of the pipe body;

[0030] Sealing members, the sealing members being arranged at both ends of the tube body;

[0031] an input port connected to one end of the tube body and used for inputting liquid, the liquid flowing through the tube body through the flow gap;

[0032] an output port connected to one end of the tube body and used for outputting the heated liquid;

[0033] Wherein, the second temperature measuring element is connected to the input port, and the third temperature measuring element is connected to the output port.

[0034] In a feasible embodiment, the sewage treatment assembly includes: a sedimentation unit, a purification unit, and a conveying unit connected in sequence, the sedimentation unit is used to receive sewage conveyed through the cylinder, and the conveying unit is used to obtain circulating water after the sewage is precipitated and purified and supplied to the cylinder;

[0035] The water inlet pipe is connected to the sedimentation unit, and the circulation pipe is connected to the conveying unit.

[0036] In a feasible embodiment, the filtering unit includes:

[0037] a first filter unit, the external water pipe being connected to the first filter unit;

[0038] a second filter unit, wherein the output end of the first filter unit is connected to the second filter unit;

[0039] Wherein, the first filter unit includes a first housing and a particle filter element arranged in the first housing;

[0040] Wherein, the second filter unit includes a second housing and an activated carbon filter element arranged in the second housing;

[0041] an adapter, the adapter being connected to the input end of the filter unit, and the external water pipe being connected to the adapter;

[0042] A decompression unit is provided between the first filter unit and the external water pipe.

[0043] In a feasible embodiment, the precipitation unit includes:

[0044] Sedimentation tank;

[0045] An inclined plate, the inclined plate being obliquely arranged in the sedimentation bin;

[0046] The sedimentation space is used to receive sewage output through the cylinder body. After the sewage is settled in the sedimentation bin by the inclined plate, the liquid overflows and enters the purification unit.

[0047] In a feasible embodiment, the purification unit includes:

[0048] a first purification chamber and a second purification chamber connected in sequence, wherein the first purification chamber is used to receive liquid overflowing from the sedimentation chamber;

[0049] A plate body, wherein a plurality of through holes are formed on the plate body, and the plate body is arranged on the top of the first purification chamber;

[0050] The third filter unit is arranged at the connection point between the first purification bin and the sedimentation bin; the fourth filter unit and the fifth filter unit are stacked and arranged on the top of the first purification bin and located at the bottom of the plate body.

[0051] In a feasible embodiment, the conveying unit includes:

[0052] a pump compartment, the pump compartment being used to receive the liquid outputted by the purification unit;

[0053] a pump body, the pump body being arranged in the pump compartment;

[0054] A circulation pipe, one end of which is connected to the pump body, and the other end of which is connected to the cylinder body.

[0055] In a feasible embodiment, the fish tank further includes:

[0056] a sewage pipe, one end of which is connected to the sedimentation unit of the sewage treatment assembly;

[0057] a first output pipeline, the first output pipeline being connected to the sewage pipe, and the other end of the first output pipeline being used for discharging sewage;

[0058] an electrically controlled valve, the electrically controlled valve being arranged on the first output pipeline;

[0059] a second output pipeline, one end of which is connected to the sewage pipe and the other end of which is used to discharge sewage;

[0060] A manual valve is provided on the second output pipeline.

[0061] In a feasible embodiment, the fish tank further includes:

[0062] an emptying pipe, one end of which is connected to the purification unit of the sewage treatment assembly, the bottom of the delivery unit and the bottom of the cylinder, and the other end of which is connected to the second output pipeline;

[0063] There are multiple drain pipes, the purification unit is connected to at least one drain pipe, the delivery unit is connected to at least one drain pipe, and the cylinder body is connected to at least one drain pipe.

[0064] According to a second aspect of an embodiment of the present application, a control method is proposed, which is applied to the fish tank according to any of the above technical solutions. The control method includes:

[0065] In response to a water change instruction, obtaining liquid level information in the sewage treatment component;

[0066] When the liquid level information is lower than a first liquid level threshold, replenishing liquid to the output end of the sewage treatment component through the water inlet component until the liquid level reaches or exceeds the first liquid level threshold;

[0067] Controlling the sewage treatment component to discharge liquid until the liquid level information is lower than a second liquid level threshold;

[0068] The water inlet assembly is used to replenish liquid to the output end of the sewage treatment assembly, and then the sewage treatment assembly replenishes liquid to the fish tank.

[0069] Compared with the prior art, the present invention has at least the following beneficial effects:

[0070] The fish tank provided in the embodiment of the present application includes a tank body, a cabinet body, a sewage treatment component, a water pipe for opening the tank, and a water inlet component. The cabinet body is used to accommodate the sewage treatment component, the water pipe for opening the tank, and the water inlet component. The tank body is used to hold water and raise fish. As the fish raising time increases, dirt will be generated in the tank body, such as excess fish food and fish feces. As water is added to the tank body, the dirt in the tank body will be transported to the sewage treatment component. After the sewage is purified by the sewage treatment component, it is transported to the fish tank, so that the water in the tank body can be recycled. The external water pipe can be connected to the user's home water pipe. When the fish tank needs to be replenished or changed, the water inlet component can be opened. The external water can be transported to the heating module after the particulate matter and residual chlorine are removed by the filtration unit. The heating module can heat the water. When the water temperature reaches the fish breeding standard, it can be supplied to the tank body. Based on this, the fish tank provided in the embodiment of the present application can circulate and purify the water in the fish tank when the fish tank is in normal use. When the fish tank needs to be replenished or changed, water that can meet the needs of fish breeding can be directly replenished through the water inlet component. The fish tank is more convenient to use, has a high degree of automation, and has a low maintenance frequency.

[0071] The fish tank provided in the embodiment of the present application can, when used for the first time, allow the user to connect one end of the water pipe on the tank to the tap water pipe in the user's home, and then turn on the tap water pipe. The water from the user's home can enter the tank body through the water pipe on the tank body. As time goes by, the tank body is filled with external water, and the external water can overflow into the sewage treatment component. This water can be used to clean the tank body and the sewage treatment component, create conditions for the establishment of the nitrification system of the sewage treatment component, balance water quality parameters, and detect the status of the equipment and the tank body. The tank opening process does not require manual transportation of clean water, and tap water can be directly introduced into the fish tank without the need for complicated operations, making the use of the fish tank more convenient.

[0072] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0074] Figure 1 A schematic structural diagram of a heating module for a fish tank according to an embodiment of the present application;

[0075] Figure 2 A schematic structural diagram of a heating module of a fish tank in an exploded state according to an embodiment of the present application;

[0076] Figure 3 A schematic structural diagram of the water flow state of a heating module of a fish tank according to an embodiment of the present application;

[0077] Figure 4 A schematic structural diagram of a heating tube of a heating module of a fish tank according to an embodiment of the present application;

[0078] Figure 5 A schematic structural diagram of a heating tube of a first temperature control switch of a heating module of a fish tank according to an embodiment of the present application;

[0079] Figure 6 A schematic structural block diagram of the circuit connection relationship of a heating module of a fish tank according to an embodiment of the present application;

[0080] Figure 7 A schematic structural diagram of a fish tank according to an embodiment of the present application;

[0081] Figure 8 This is a schematic structural diagram of a heating module and a filter unit of a fish tank according to an embodiment of the present application;

[0082] Figure 9 A schematic structural diagram of a sewage treatment component of a fish tank according to an embodiment of the present application;

[0083] Figure 10 This is a schematic structural diagram of the heating module and the filter unit of the fish tank from another angle according to an embodiment of the present application;

[0084] Figure 11 for Figure 10 A partial enlarged schematic diagram of point A in the middle;

[0085] Figure 12 This is a schematic structural diagram of the heating module and the filter unit of the fish tank from another angle according to an embodiment of the present application;

[0086] Figure 13 for Figure 12 A partial enlarged schematic diagram of point B in the middle;

[0087] Figure 14 A schematic structural diagram of a water inlet assembly of a fish tank according to an embodiment of the present application;

[0088] Figure 15 for Figure 14 A partial enlarged schematic diagram of point C in the middle;

[0089] Figure 16 A schematic structural diagram of the water pipe of a fish tank provided in an embodiment of the present application;

[0090] Figure 17 for Figure 16 A partial enlarged schematic diagram of point D in the middle;

[0091] Figure 18 for Figure 16 A partial enlarged schematic diagram of point E in the middle;

[0092] Figure 19 A schematic structural diagram of a liquid level gauge for a fish tank according to an embodiment of the present application;

[0093] Figure 20 for Figure 19 A partial enlarged schematic diagram of point F in the middle;

[0094] Figure 21 A schematic structural diagram of a fish tank liquid level gauge according to an embodiment of the present application from another angle;

[0095] Figure 22 A schematic structural diagram of a liquid level gauge for a fish tank according to an embodiment of the present application;

[0096] Figure 23 A schematic structural block diagram of the circuit connection relationship of a liquid level meter for a fish tank according to an embodiment of the present application;

[0097] Figure 24 A schematic structural diagram illustrating the layout relationship between a liquid level gauge and a heating module of a fish tank according to an embodiment of the present application;

[0098] Figure 25 This is a schematic flow chart of a method for controlling a fish tank according to an embodiment of the present application.

[0099] in, Figures 1 to 24 The corresponding relationship between the reference numerals and component names is as follows:

[0100] 110 cylinder body, 120 cabinet body, 130 sewage treatment component, 140 water inlet component, 150 sewage pipe, 160 first output pipeline, 170 electric control valve, 180 second output pipeline, 190 manual valve, 1100 drain pipe;

[0101] 111 accommodating chamber, 112 overflow trough;

[0102] 131 sedimentation unit, 132 purification unit, 133 conveying unit, 1311 sedimentation chamber, 1312 inclined plate, 1321 first purification chamber, 1322 second purification chamber, 1323 plate body, 1324 third filter unit, 1325 fourth filter unit, 1326 fifth filter unit, 1331 pump chamber, 1332 pump body, 1333 circulation pipe, 1334 water inlet pipe;

[0103] 141 filter unit, 142 external water pipe, 143 heating module, 1411 first filter unit, 1412 second filter unit, 1413 adapter, 1414 pressure reducing unit;

[0104] 1431 heating tube, 1432 second temperature measuring element, 1433 third temperature measuring element, 1434 first temperature control switch, 1435 second temperature control switch, 1436 third housing, 1437 third temperature control switch, 1438 power supply circuit, 1439 main control circuit;

[0105] 14311 tube body, 14312 flow guide tube, 14313 seal, 14314 input port, 14315 output port, 14316 heating element, 14317 welding point, 14341 electrode pin, 14342 contact surface;

[0106] 210 opens the water pipe on the cylinder, 220 opens the cylinder valve;

[0107] 300 liquid level gauge; 310 fourth housing, 320 detection assembly, 330 control board, 340 first temperature measuring element; 311 mounting slot, 312 limit card slot; 321 infrared emitting tube, 322 receiving tube; 331 expansion circuit, 332 signal amplifying circuit, 333 signal sorting circuit, 334 control chip, 335 indicator light. DETAILED DESCRIPTION

[0108] In the following description, a number of specific details are provided to provide a more thorough understanding of the technical solutions provided by the present invention. However, it is obvious to those skilled in the art that the technical solutions provided by the present invention can be implemented without one or more of these details.

[0109] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of the features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0110] Exemplary embodiments of the present invention will now be described in greater detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art.

[0111] like Figures 1 to 24 As shown, according to the first aspect of the embodiment of the present application, a fish tank is proposed, comprising: a tank body 110; a cabinet body 120, the tank body 110 is arranged on the cabinet body 120; a sewage treatment component 130, the sewage treatment component 130 is arranged in the cabinet body 120, the sewage treatment component 130 includes a water inlet pipe 1334 and a circulation pipe 1333, one end of the water inlet pipe 1334 is connected to the tank body 110, and the other end is connected to the input end of the sewage treatment component 130, and one end of the circulation pipe 1333 is connected to the sewage treatment component 130. The output end of the treatment component 130 is connected to the cylinder body 110 at the other end; the cylinder water pipe 210 is opened, and one end of the cylinder water pipe 210 is connected to the circulation pipe 1333; the water inlet component 140, the water inlet component 140 includes a filter unit 141, a heating module 143 and an external water pipe 142, the external water pipe 142 is connected to the filter unit 141, the output end of the filter unit 141 is connected to the heating module 143, and the output end of the heating module 143 is connected to the output end of the sewage treatment component 130.

[0112] The fish tank provided in the embodiment of the present application includes a tank body 110, a cabinet body 120, a sewage treatment component 130, a water pipe 210 for opening the tank and a water inlet component 140. The cabinet body 120 is used to accommodate the sewage treatment component 130, the water pipe 210 for opening the tank and the water inlet component 140. The tank body 110 is used to hold water and raise fish. As the fish raising time increases, dirt will be generated in the tank body 110, such as excess fish food and fish feces. As water is added to the tank body 110, the dirt in the tank body 110 will be transported to the sewage treatment component 130. After the sewage is purified by the sewage treatment component 130, it is transported to the fish tank, so that the water in the tank body 110 can be recycled. The external water pipe 142 can be connected to the user's home water pipe. When the fish tank needs to be replenished or replaced with water, the water inlet assembly 140 can be opened. The external water passes through the filter unit 141 to remove particulate matter and residual chlorine, and then is transported to the heating module 143. The heating module 143 can heat the water. When the water temperature reaches the fish breeding standard, it can be supplied to the tank body 110. Based on this, the fish tank provided by the embodiment of the present application can circulate and purify the water in the fish tank when the fish tank is in normal use. When the fish tank needs to be replenished or replaced with water, the water that meets the fish breeding needs can be directly replenished through the water inlet assembly 140. The fish tank is more convenient to use, has a high degree of automation, and has a low maintenance frequency.

[0113] When the fish tank provided by the embodiment of the present application is used for the first time, the user can connect one end of the water pipe 210 of the tank to the tap water pipe of the user's home, and then turn on the tap water pipe. The water from the user's home can enter the tank body 110 through the water pipe 210. As time goes by, the tank body 110 is filled with external water, and the external water can overflow into the sewage treatment component 130. This water can be used to clean the tank body 110 and the sewage treatment component 130, create conditions for the nitrification system of the sewage treatment component 130, balance water quality parameters, and detect the status of the equipment and the tank body 110. The tank opening process does not need to rely on manual transportation of clean water. Tap water can be directly introduced into the fish tank without complicated operations, making the use of the fish tank more convenient.

[0114] like Figures 1 to 6 As shown, in a feasible embodiment, the heating module 143 includes: a heating tube 1431; a second temperature measuring element 1432 and a third temperature measuring element 1433, the second temperature measuring element 1432 is arranged at the input end of the heating tube 1431, and the third temperature measuring element 1433 is arranged at the output end of the heating tube 1431, and the second temperature measuring element 1432 and the third temperature measuring element 1433 are used to detect the temperature of the liquid flowing through the heating tube 1431; a first temperature-controlled switch 1434 and a second temperature-controlled switch 1435, the first temperature-controlled switch 1434 and the second temperature-controlled switch 1435 are both connected to the heating element 14316 of the heating tube 1431, the first temperature-controlled switch 1434 is arranged at the input end of the heating tube 1431, and the second temperature-controlled switch 1435 is arranged at the output end of the heating tube 1431.

[0115] The heating module 143 provided in the embodiment of the present application includes a heating tube 1431, a second temperature measuring element 1432, a third temperature measuring element 1433, a first temperature control switch 1434 and a second temperature control switch 1435. The heating module 143 can be used as a component of a fish tank. For example, the external water of the fish tank can flow through the heating tube 1431, and then the water is heated by the heating tube 1431. After the water reaches the temperature required for fish breeding, it can be supplied to the fish tank. Based on this, there is no need for the user to air the water, making the use of the fish tank more convenient. Through the tubular design of the heating tube 1431, when the liquid flows through the heating tube 1431, the heating tube 1431 can exchange heat with the liquid, thereby completing the heating of the liquid. The tubular design can achieve heating while circulating, and can achieve instant heating, making the heating module 143 particularly suitable as a component of a fish tank.

[0116] The heating module 143 provided in the embodiment of the present application can detect the liquid inlet temperature and the liquid outlet temperature of the heating assembly through the second temperature measuring element 1432 and the third temperature measuring element 1433 respectively during use. Based on this, on the one hand, the working power of the heating pipe 1431 can be controlled, the heating efficiency can be improved while ensuring that the heating can reach the expected temperature, and instant heating can be achieved. On the other hand, the heating temperature can be prevented from being too high to affect the feeding of fish.

[0117] The heating module 143 provided in the embodiment of the present application can detect the liquid inlet temperature and the liquid outlet temperature of the heating assembly through the second temperature measuring element 1432 and the third temperature measuring element 1433 respectively during use. Based on this, on the one hand, the working power of the heating pipe 1431 can be controlled, the heating efficiency can be improved while ensuring that the heating can reach the expected temperature, and instant heating can be achieved. On the other hand, the heating temperature can be prevented from being too high to affect the feeding of fish.

[0118] The heating module 143 provided in the embodiment of the present application can detect the liquid inlet temperature and the liquid outlet temperature of the heating assembly through the second temperature measuring element 1432 and the third temperature measuring element 1433 respectively during use. Based on this, on the one hand, the working power of the heating pipe 1431 can be controlled, the heating efficiency can be improved while ensuring that the heating can reach the expected temperature, and instant heating can be achieved. On the other hand, the heating temperature can be prevented from being too high to affect the feeding of fish.

[0119] It can be understood that the heating element 14316 includes but is not limited to graphene heating element 14316, thick film resistance wire heating element 14316, flange heating element 14316, etc., which is attached to the outer wall of the heating pipe 1431 to form a tubular structure. The heating element 14316 generates a large amount of Joule heat by loading high-power alternating current, so that the water flowing in the stainless steel pipe is heated.

[0120] It can be understood that the first temperature control switch 1434 and the second temperature control switch 1435 are elements containing a temperature measuring surface and two electrode pins 14341. When the contact surface 14342 is in contact with the heating element 14316, the heating element 14316 generates heat. When the heating element 14316 reaches the target temperature of the temperature control switch, the metal sheet inside the temperature control switch deforms, causing communication to be disconnected, so that the switch is turned off. Otherwise, when the heating element 14316 does not reach the target temperature of the temperature control switch, the temperature control switch is always closed.

[0121] It can be understood that establishing conditions for the nitrification system of the sewage treatment assembly 130 refers to dissolved oxygen, ammonia nitrogen, nitrate and other substances in the water, which are the "nutrients" for the survival and reproduction of nitrifying bacteria (key bacteria for decomposing harmful ammonia nitrogen). After adding water, these substances can flow in the water body and be used by nitrifying bacteria, thereby gradually establishing a stable nitrification system. At the same time, when the tank is opened, the bottom sand and filter material (such as ceramic rings, biochemical cotton, etc.) are usually laid. After adding water, the water body can fully soak these carriers to provide a moist environment for nitrifying bacteria to attach and accelerate the colonization of bacterial populations.

[0122] It can be understood that balancing water quality parameters refers to the peculiar smell of residual glass glue in a new tank, detergent residues during cleaning, etc. After adding water, these harmful substances can be diluted and discharged through soaking and water change, reducing the toxicity to organisms. At the same time, the water quality parameters of different water sources (tap water, well water, pure water) are different. After adding water, the pH value, GH (hardness) and other parameters can be monitored by test agents, and then adjusted to the range suitable for target organisms (for example, lamp fish prefers weakly acidic water, and three lake cichlids prefer alkaline hard water) by adding adjusting agents (such as grass pellets and coral sand).

[0123] It can be understood that the detection equipment and the state of the tank body 110 refer to observing whether the tank body 110 joints and the bottom are leaking after adding water and standing for a period of time, and timely discovering and processing problems such as glass glue aging and improper installation to avoid subsequent water leakage leading to loss. At the same time, the sewage treatment assembly 130 can also be started to observe whether the working state of the sewage treatment assembly 130 is normal.

[0124] It can be understood that the fish tank provided in the embodiment of the present application can directly fill the sewage treatment component 130 and the tank body 110 with water through the tank water pipe 210 when the fish tank is used for the first time. In addition, for some situations where the fish tank needs to be filled with water urgently, the tank water pipe 210 can also be activated. For example, when the fish tank needs emergency water replenishment, when the water level in the fish tank drops sharply (such as a drop of more than 1 / 5) due to leakage, rapid evaporation, etc., a small amount of tap water can be directly added through the tank water pipe 210 for emergency use; if the water body in the fish tank is large and the biological tolerance is strong, the tank water pipe 210 can also be used for daily small amounts of water replenishment and slight water changes, making the use of the fish tank more convenient and improving the user experience.

[0125] like Figures 1 to 6 As shown, in a feasible embodiment, the heating module 143 also includes: a third shell 1436, and the heating tube 1431 is arranged in the third shell 1436; wherein the first temperature control switch 1434 and the second temperature control switch 1435 are both connected to the third shell 1436, and are connected to the heating element 14316 of the heating tube 1431 through the third shell 1436.

[0126] In this technical solution, the structural composition of the heating module 143 is further provided. The heating module 143 can also include a third shell 1436, through which the heating tube 1431 can be encapsulated and an installation position is provided for the first temperature control switch 1434 and the second temperature control switch 1435.

[0127] like Figures 1 to 6 As shown, in a feasible embodiment, the heating module 143 further includes: a third temperature control switch 1437 , which is connected to the heating element 14316 of the heating tube 1431 and is arranged between the first temperature control switch 1434 and the second temperature control switch 1435 .

[0128] In this technical solution, it is considered that there are mainly two types of abnormal conditions of the heating module 143. The first is that as the use time of the heating module 143 increases, more scale adheres to the inner wall of the heating tube 1431 of the heating module 143. This scale affects the heating efficiency, causing the detection temperature of the first temperature control switch 1434 and the second temperature control switch 1435 to reach the disconnection temperature of the temperature control switch, but the heating of the water still does not meet the requirements; the other is that no liquid flows through the heating tube 1431, causing the heating tube 1431 to dry out. The heating module 143 provided in the embodiment of the present application can detect and control abnormalities caused by scale on the heating tube 1431 through the first temperature control switch 1434 and the second temperature control switch 1435. Furthermore, by setting the third temperature control switch 1437, the dry-burning state of the heating tube 1431 can be detected and controlled, making the use of the heating module 1433 safer.

[0129] In a feasible implementation manner, the disconnection temperature of the third temperature-controlled switch 1437 is greater than the disconnection temperature of the first temperature-controlled switch 1434 , and greater than the disconnection temperature of the second temperature-controlled switch 1435 .

[0130] In this technical solution, the relationship between the third temperature control switch 1437, the first temperature control switch 1434 and the second temperature control switch 1435 is further provided. Considering that the first temperature control switch 1434 and the second temperature control switch 1435 are mainly used to detect the heating efficiency and scale adhesion status in the heating tube 1431, and the third temperature control switch 1437 is used to detect the dry-burning state of the heating tube 1431, the third temperature control switch 1437, the first temperature control switch 1434 and the second temperature control switch 1435 are set to different disconnection temperatures based on this. Since the detection purpose is the same, the disconnection temperatures of the first temperature control switch 1434 and the second temperature control switch 1435 can be the same or similar; and the disconnection temperature of the third temperature control switch 1437 needs to be higher than that of the first temperature control switch 1434 and the second temperature control switch 1435 to ensure accurate detection of the dry-burning state of the heating module 143.

[0131] like Figures 1 to 6 As shown, in a feasible embodiment, the heating module 143 also includes: a power supply circuit 1438 and a main control circuit 1439, the second temperature control switch 1435 is connected to the main control circuit 1439, the first temperature control switch 1434 is connected to the power supply circuit 1438, the third temperature control switch 1437 is connected to the power supply circuit 1438 and / or the main control circuit 1439, and the main control circuit 1439 is connected to the power supply circuit 1438; wherein, when the second temperature control switch 1435 reaches the first temperature threshold, a first signal is sent to the main control circuit 1439 to disconnect the power supply circuit 1438 through the main control circuit 1439; when the first temperature control switch 1434 reaches the first temperature threshold, the power supply circuit 1438 is controlled to be disconnected.

[0132] In this technical solution, a structural composition of a heating module 143 is further provided. The heating module 143 may include a power supply circuit 1438 and a main control circuit 1439, and the second temperature control switch 1435 is connected to the main control circuit 1439, and the first temperature control switch 1434 is connected to the power supply circuit 1438. Based on this, during the normal use of the heating module 143, since the liquid flows into the heating tube 1431 through the input end and flows out of the heating tube 1431 through the output end, the detection result of the second temperature control switch 1435 should be slightly higher than the detection result of the first temperature control switch 1434. Therefore, the second temperature control switch 1435 will be the first to discover the abnormality of the heating module 143. When the heating temperature of the heating tube 1431 reaches the first temperature threshold, it means that even if the heating tube 1431 is heated at a higher temperature, the heating of the liquid is still insufficient. If the temperature still does not meet the heating requirement, in this case the second temperature control switch 1435 will first send a low-level first signal, and the main control circuit 1439 can control the power circuit 1438 to stop supplying power through the first signal to ensure the safe use of the heating module 143 and remind the user to maintain the heating module 143; and in some working conditions, if the main control circuit 1439 has an abnormality, it may cause the heating module 143 to continue working. As the heating module 143 continues to work, the detection result of the first temperature control switch 1434 will also reach the first temperature threshold. The first temperature control switch 1434 is directly connected to the power circuit 1438. In this case, the first temperature control switch 1434 will directly disconnect the power circuit 1438 to ensure smooth power outage, thereby realizing double insurance control of the abnormal state of the heating module 143.

[0133] In this technical solution, the third temperature control switch 1437 can be connected to the power supply circuit 1438 and / or the main control circuit 1439, that is, the third temperature control switch 1437 can be connected to the power supply circuit 1438, or to the main control circuit 1439, or can be connected to the power supply circuit 1438 or the main control circuit 1439 at the same time, and it only needs to be able to cut off the power to the heating module 143.

[0134] like Figures 1 to 6 As shown, in a feasible embodiment, the heating tube 1431 includes: a tube body 14311, a heating element 14316 including a heating circuit, and the heating circuit is plated on the tube body 14311; a flow guide tube 14312, the flow guide tube 14312 is arranged in the tube body 14311, and a flow gap is formed between the flow guide tube 14312 and the inner wall of the tube body 14311; a seal 14313, and the seal 14313 is arranged at both ends of the tube body 14311.

[0135] This technical solution further provides the structural composition of the heating tube 1431, which can include a tube body 14311, a flow guide tube 14312, and a seal 14313. After liquid is supplied to the heating tube 1431, it flows along the flow gap between the flow guide tube 14312 and the tube body 14311 under the guidance of the flow guide tube 14312. This ensures closer contact between the liquid and the heating tube 1431, thereby improving heating efficiency. The seal 14313 can also be provided to seal the heating tube 1431, reducing the possibility of liquid spillage.

[0136] In this technical solution, the heating element 14316 may include a heating circuit plated on the tube body 14311. The heating circuit may be formed by a solder point 14317. The power supply circuit 1438 is connected to the solder point 14317 to power the heating circuit. The heating circuit has a certain resistance value. When current flows through the heating circuit, the tube body 14311 can be heated.

[0137] like Figures 1 to 6 As shown, in a feasible embodiment, the heating tube 1431 also includes: an input port 14314, the input port 14314 is connected to one end of the tube body 14311, and is used to input liquid, and the liquid flows through the tube body 14311 through the flow gap; an output port 14315, the output port 14315 is connected to one end of the tube body 14311, and is used to output the heated liquid; wherein, the second temperature measuring element 1432 is connected to the input port 14314, and the third temperature measuring element 1433 is connected to the output port 14315.

[0138] In this technical solution, the structure of the heating tube 1431 is further provided. The heating tube 1431 can also include an input port 14314 and an output port 14315. This arrangement facilitates the supply of water outside the heating module 143, and at the same time facilitates the supply of heated liquid to the fish tank. The second temperature measuring element 1432 is connected to the input port 14314, and the third temperature measuring element 1433 is connected to the output port 14315, so that the second temperature measuring element 1432 and the third temperature measuring element 1433 can be relatively far away from the heating element 14316, which can ensure that the detection results of the second temperature measuring element 1432 and the third temperature measuring element 1433 are more accurate and more accurately represent the temperature of the liquid.

[0139] like Figures 7 to 10As shown, in a feasible embodiment, the sewage treatment component 130 includes: a sedimentation unit 131, a purification unit 132 and a conveying unit 133 connected in sequence, the sedimentation unit 131 is used to receive the sewage conveyed through the cylinder body 110, and the conveying unit 133 is used to obtain circulating water after the sewage is precipitated and purified and supplied to the cylinder body 110; the water inlet pipe is connected to the sedimentation unit 131, and the circulation pipe 1333 is connected to the conveying unit 133.

[0140] In this technical solution, the sewage treatment component 130 includes a sedimentation unit 131, a purification unit 132 and a conveying unit 133 which are connected in sequence, and the water inlet component 140 includes a filter unit 141 and an external water pipe 142. Based on this, during the use of the fish tank, the cylinder body 110 is used to hold water and raise fish. As the fish raising time increases, dirt will be generated in the cylinder body 110, such as excess fish food and fish feces. As water is added to the cylinder body 110, the dirt in the cylinder body 110 will be transported to the sewage treatment component 130. The sewage can be first transported to the sedimentation unit 131. After the sewage is precipitated, preliminary solid-liquid separation is achieved, and then the liquid is purified by the purification unit 132. After that, the liquid can be sent back to the cylinder body 110 through the conveying unit 133. In this way, the sewage circulation treatment of the cylinder body 110 can be completed, which can reduce the maintenance frequency of the fish tank.

[0141] like Figures 7 to 10 As shown, in a feasible embodiment, the filter unit 141 includes: a first filter unit 1411, the external water pipe 142 is connected to the first filter unit 1411; a second filter unit 1412, the output end of the first filter unit 1411 is connected to the second filter unit 1412; wherein, the first filter unit 1411 includes a first shell and a particulate filter element arranged in the first shell; wherein, the second filter unit 1412 includes a second shell and an activated carbon filter element arranged in the second shell.

[0142] In this technical solution, the structural composition of the filter unit 141 is further provided. The filter unit 141 may include a first filter unit 1411 and a second filter unit 1412. The first filter unit 1411 may be filled with filter cotton as a filter medium, and the second filter unit 1412 may be filled with activated carbon as a filter medium. Based on this, when water is added to the cylinder body 110 from the outside, the water can first pass through the first filter unit 1411 to remove particulate matter and impurities, and then pass through the second filter unit 1412 to remove harmful substances in the water, especially residual chlorine in the water. After that, the water can be transported to the delivery unit 133, and the delivery unit 133 can supply the externally added liquid into the cylinder body 110. Based on this, the fish tank provided by the embodiment of the present application does not require the user to collect water or dry the water, making the fish tank more convenient to use.

[0143] likeFigures 7 to 10 As shown, in a feasible embodiment, the filter unit 141 also includes: an adapter 1413, the adapter 1413 is connected to the input end of the filter unit 141, and the external water pipe 142 is used to be connected to the adapter 1413; the pressure reducing unit 1414, the pressure reducing unit 1414 is arranged between the first filter unit 1411 and the external water pipe 142.

[0144] This technical solution further provides a structural component of a filter unit 141. The filter unit 141 may include an adapter 1413 and a pressure reducing unit 1414. The adapter 1413 facilitates connection to an external water pipe 142, making assembly of the fish tank more convenient. Considering that the water pressure in a user's home may fluctuate, especially in some cases where the water pressure in a user's home may be high, which may easily cause fluctuations in the water supply to the fish tank, the filter unit 141 may also be equipped with a pressure reducing unit 1414 to ensure that the pressure of the external water is more balanced after passing through the pressure reducing unit 1414, thereby controlling the water pressure and making the fish tank safer to use and having a longer service life.

[0145] In some examples, pressure reducing unit 1414 may include a pressure reducing valve.

[0146] like Figures 7 to 10 As shown, in a feasible embodiment, the sedimentation unit 131 includes: a sedimentation bin 1311; an inclined plate 1312, and the inclined plate 1312 is obliquely arranged in the sedimentation bin 1311; wherein the sedimentation space is used to receive sewage output through the cylinder body 110, and after the sewage is precipitated in the sedimentation bin 1311 using the inclined plate 1312, the liquid overflows and enters the purification unit 132.

[0147] This technical solution further provides a structural component of a sedimentation unit 131. The sedimentation unit 131 may include a sedimentation tank 1311 and an inclined plate 1312. Based on this, the sewage overflowing from the fish tank can be first supplied to the sedimentation tank 1311, where it first contacts the inclined plate 1312 of the sedimentation tank 1311. The inclined plate 1312 guides the output water flow. On the one hand, the overflow water output from the fish tank can be transported to the bottom of the sedimentation tank 1311 for easy sedimentation. On the other hand, the provision of the inclined plate 1312 can suppress the surge of the overflow water and reduce the generation of noise. As the sewage is transported into the sedimentation tank 1311, the solid dirt in the sewage can be precipitated in the sedimentation tank 1311 under the guidance of the inclined plate 1312. Then, as the sewage delivery increases, the overflow water that has completed sedimentation will enter the purification unit 132 for further treatment. The provision of the sedimentation unit 131 can remove large particles and high-density impurities in the sewage.

[0148] like Figures 7 to 10As shown, in an embodiment, the purification unit 132 comprises: a first purification bin 1321 and a second purification bin 1322 connected in sequence, the first purification bin 1321 is used for receiving the liquid overflowed from the sedimentation bin 1311; a plate body 1323, a plurality of through holes are formed on the plate body 1323, and the plate body 1323 is arranged on the top of the first purification bin 1321; a third filter unit 1324 arranged at the connection between the first purification bin 1321 and the sedimentation bin 1311; a fourth filter unit 1325 and a fifth filter unit 1326 arranged in a stack on the top of the first purification bin 1321 and at the bottom of the plate body 1323.

[0149] In the technical scheme, the structure of the purification unit 132 is further provided, and the purification unit 132 can comprise the first purification bin 1321 and the second purification bin 1322 connected in sequence. After the sewage is subjected to sedimentation, the sewage can flow into the first purification bin 1321 through the overflow of the sedimentation bin 1311. In this process, the sewage can flow through the third filter unit 1324 first, and then be transported to the fourth filter unit 1325 and the fifth filter unit 1326 through the plurality of through holes on the plate body 1323. Based on this, the third filter unit 1324 can be further arranged to remove the solid particles in the sewage. Then, the plate body 1323 can be arranged to evenly distribute the liquid, so that the liquid can be evenly distributed on the fourth filter unit 1325 and the fifth filter unit 1326, and finally flow into the first purification bin 1321. In this case, most of the solid particles in the liquid transported into the first purification bin 1321 can be purified. Then, the liquid can flow into the second purification bin 1322 through the overflow of the first purification bin 1321. The first purification bin 1321 and the second purification bin 1322 can be filled with purification particles to sterilize the liquid. After the liquid is treated by the first purification bin 1321 and the second purification bin 1322, the liquid can be reused for fish breeding. The purified liquid can be transported to the conveying unit 133 through overflow.

[0150] As shown, Figures 7 to 10 In an embodiment, the conveying unit 133 comprises: a pump bin 1331 for receiving the liquid output by the purification unit 132; a pump body 1332 arranged in the pump bin 1331; and a circulation pipe 1333, one end of the circulation pipe 1333 is connected to the pump body 1332, and the other end of the circulation pipe 1333 is connected to the cylinder body 110.

[0151] In this technical solution, the structural composition of the conveying unit 133 is further provided. The conveying unit 133 may include a pump chamber 1331, a pump body 1332 and a circulation pipe 1333. Based on this, the reusable liquid after sedimentation and purification can be supplied to the pump chamber 1331 through overflow, and then the purified liquid can be returned to the tank body 110 through the circulation pipe 1333 by opening the pump body 1332, so as to reduce the maintenance frequency of the fish tank and make the water quality of the fish tank tend to be balanced, which is conducive to improving the survival rate of fish breeding.

[0152] like Figures 19 to 24 As shown, in some examples, a liquid level meter 300 may also be provided in the pump chamber 1331 , and the liquid level meter 300 is used to detect the liquid level in the pump chamber 1331 .

[0153] In some examples, the liquid level meter 300 includes: a fourth shell 310, the fourth shell 310 is used to be set on the inner wall of the pump compartment 1331, and the fourth shell 310 has a mounting groove 311 formed along the height direction; at least two groups of detection components 320, different detection components 320 are arranged at intervals along the height direction of the fourth shell 310, each detection component 320 includes an infrared emitting tube 321 and a receiving tube 322, the infrared emitting tube 321 and the receiving tube 322 are both connected to the inner wall of the mounting groove 311, and the infrared emitting tube 321 and the receiving tube 322 in each detection component 320 are arranged opposite to each other; a control board 330, the control board 330 is arranged on the side of the fourth shell 310 away from the mounting groove 311, and the detection component 320 is connected to the control board 330.

[0154] The liquid level meter 300 provided in the embodiment of the present application includes a fourth shell 310, at least two detection components 320 and a control board 330. During use, the liquid level meter 300 can be set in the space of the liquid level to be detected. The infrared emitting tube 321 and the receiving tube 322 in each detection component 320 are arranged relative to each other, so that the optical axes of the infrared emitting tube 321 and the receiving tube 322 are in a straight line. The infrared photoelectric principle does not require additional lenses, and does not require specially designed optical lenses or prisms for light path control. It can be either contact or non-contact. During the specific inspection, when the infrared emitting tube 321 and the receiving tube 322 are exposed to the air, the infrared signal is not blocked and the pulse signal can be sent to the control board 330 normally; when the infrared emitting tube 321 and the receiving tube 322 are submerged in water, since water has a strong attenuation and divergence effect on infrared light, the receiving tube 322 cannot receive a sufficiently strong pulse signal, and the signal output to the control board is a high level (depending on the circuit design, it can also be a low level signal), thereby distinguishing and judging the water level position. By setting multiple detection components 320, the liquid level meter 300 can have multiple detection positions, thereby increasing the scope of use.

[0155] The liquid level meter 300 provided in the embodiment of the present application, the infrared emitting tube 321 and the receiving tube 322 are connected to the inner wall of the mounting groove 311 and arranged in the mounting groove 311. Based on this, during the detection process, when the liquid level meter 300 is set in the area to be detected, the liquid will flow in the mounting groove 311 as the liquid level rises and falls. The formation of the mounting groove 311 makes the detection of the liquid level more accurate, and will not cause an erroneous judgment of the liquid level due to the surge of the liquid level. At the same time, it can reduce the probability of debris entering between the infrared emitting tube 321 and the receiving tube 322, and it is also convenient to package the infrared emitting tube 321 and the receiving tube 322.

[0156] In some examples, in addition to determining the liquid level based on the signal fed back by the receiving tube 322, the control board 330 can also control the infrared emitting tube 321 to periodically emit a pulse signal. Alternatively, an external pulse signal can be used as a switching control signal for the infrared emitting tube 321. The frequency is primarily determined by the photoelectric conversion characteristics of the infrared emitting tube 321 and is typically in the range of 100 Hz to 10 kHz. The duty cycle is primarily designed to be as small as possible while ensuring that the infrared signal can be properly transmitted and reliably received, thereby increasing its service life. For example, it can be set to 1%.

[0157] The liquid level meter 300 provided by the embodiment of the present application realizes a low-cost, high-reliability, and high-sensitivity liquid level detection function. Taking the liquid level meter 300 including two detection components 320 as an example, the liquid level meter 300 includes two gears. Through the integrated two-way high-sensitivity infrared emitting tube 321 and receiving tube 322 and the matching signal amplification circuit 332 and signal sorting circuit 333, reliable detection of high and low liquid levels is achieved. Each channel has an infrared emitting tube 321 that emits a 1KHz infrared light pulse signal; the corresponding receiving tube 322 converts the detected pulse signal into a digital pulse signal after signal amplification and waveform sorting, and sends it to the control board 330.

[0158] It is understood that, with the liquid level meter 300 provided in the embodiment of the present application, by selecting infrared emitting tubes 321 and receiving tubes 322 with different optical powers, the spacing between the two tubes can be adjusted to accommodate differences in product structure and size. Specifically, high-power infrared tubes are used for longer spacing, while low-power infrared tubes are used for closer spacing. Optimal photoelectric detection performance can also be achieved by adjusting device parameters such as the current-limiting resistor.

[0159] like Figures 19 to 24 As shown, in a feasible embodiment, a first groove is formed at the connection between the infrared emitting tube 321 and the inner wall of the mounting groove 311, and the first groove is connected to the mounting groove 311; a second groove is formed at the connection between the receiving tube 322 and the inner wall of the mounting groove 311, and the second groove is connected to the mounting groove 311.

[0160] In this technical solution, an arrangement method of the infrared emitting tube 321 and the receiving tube 322 is further provided. The infrared emitting tube 321 is arranged in the first trough, and the receiving tube 322 is arranged in the second trough. Based on this, the infrared emitting tube 321 and the receiving tube 322 can be protected respectively by the first trough and the second trough, thereby reducing the probability of debris infecting the infrared emitting tube 321 and the receiving tube 322, and reducing the impact of liquid level surge on detection accuracy.

[0161] In a feasible implementation, the liquid level meter 300 further includes: a packaging layer, which is provided at the connection between the infrared emitting tube 321 and the fourth shell 310 and at the connection between the receiving tube 322 and the fourth shell 310 .

[0162] In this technical solution, the liquid level meter 300 may further include an encapsulation layer, which seals the connection between the infrared emitting tube 321 and the fourth shell 310 and the connection between the receiving tube 322 and the fourth shell 310, thereby preventing the liquid from flowing to the area where the control board 330 is located and protecting the control board 330.

[0163] In some examples, the material from which the encapsulation layer is made may include resin.

[0164] In a feasible implementation, the liquid level meter 300 further includes: a first sealing cover, which is used to cover the infrared emitting tube 321 ; and a second sealing cover, which is used to cover the receiving tube 322 .

[0165] In this technical solution, considering that in some cases, the liquid level meter 300 may be used to detect liquids with higher temperatures or strong corrosiveness, the liquid level meter 300 may also include a first sealing cover and a second sealing cover to respectively seal the infrared emitting tube 321 and the receiving tube 322, and detect the liquid level in a non-contact manner.

[0166] It can be understood that the first sealing cover and the second sealing cover need to be made of infrared-transmitting materials, such as glass.

[0167] like Figures 19 to 24 As shown, in a feasible embodiment, the control board 330 is formed with: an extension circuit 331, which is arranged along the height direction of the fourth shell 310, and the extension circuit 331 is connected to the infrared emitting tube 321 and the receiving tube 322; a signal amplifying circuit 332, and the extension circuit 331 is connected to the signal amplifying circuit 332; a signal sorting circuit 333, and the signal amplifying circuit 332 is connected to the signal sorting circuit 333; and a control chip 334, and the signal sorting circuit 333 is connected to the control chip 334.

[0168] In this technical solution, a circuit structure of a control board 330 is further provided. The control board 330 may include an extension circuit 331, a signal amplifying circuit 332, a signal sorting circuit 333 and a control chip 334. During use, the extension circuit 331 is connected to the infrared emitting tube 321 and the receiving tube 322. The extension circuit 331 is used to receive the level signal fed back by the receiving tube 322. The signal amplifying circuit 332 then amplifies the analog pulse signal generated by the receiving tube 322 to improve the signal-to-noise ratio. The signal sorting circuit 333 then converts the amplified analog signal into a standard level digital signal, which is beneficial to signal transmission. Finally, the control chip 334 can determine the liquid level based on the signal sent by the signal sorting circuit 333.

[0169] It can be understood that the signal amplification circuit 332 includes but is not limited to a transistor or MOS tube amplifier circuit, a comparator circuit, etc., and the signal conditioning circuit 333 includes but is not limited to a logic gate circuit, a Schmitt trigger, etc.

[0170] like Figures 19 to 24 As shown, in a feasible embodiment, the liquid level meter 300 also includes: a first temperature measuring element 340, which is arranged on the fourth shell 310 and connected to the control board 330; an indicator light 335, which is arranged on the fourth shell 310 and connected to the control board 330.

[0171] In this technical solution, the liquid level meter 300 may further include a first temperature measuring element 340 . The first temperature measuring element 340 can be used to detect the temperature of the liquid, thereby enriching the functions of the liquid level meter 300 and providing the liquid level meter 300 with more usage scenarios.

[0172] In this technical solution, the liquid level meter 300 may also include an indicator light 335, which can indicate the operating status of the liquid level meter 300. The 1KHz control signal of the infrared emitting tube 321 can be reused to light the indicator light 335, and the brightness of the indicator light 335 can be changed by changing the duty cycle of the control signal (the duty cycle is 1% when there is no liquid level trigger, and the duty cycle can be set to 3% to 10% when there is a liquid level trigger), thereby achieving the effect of low-cost status indication of the liquid level meter 300. In addition, through logical judgment of the two liquid level states, a fault alarm is realized in an abnormal state (such as no water at the low water level and water at the high water level; or any signal is abnormally low or high), and the user is notified by the flashing indicator light 335 of the liquid level meter 300 and the motherboard buzzer.

[0173] In some examples, the indicator light 335 is a light-emitting diode (LED) for indicating the working status of the liquid level meter 300 or providing a fault alarm.

[0174] In some examples, the first temperature measuring element 340 may be an NTC temperature sensor, which is typically packaged in various forms such as a metal housing and epoxy resin. Models of different types and sizes may be selected according to specific circumstances.

[0175] like Figures 19 to 24 As shown, in a feasible embodiment, a limit slot 312 is formed on the side of the fourth shell 310 away from the installation slot 311, the control board 330 is arranged in the limit slot 312, the infrared emitting tube 321 is connected to the control board 330 through a pin, and the receiving tube 322 is connected to the control board 330 through a pin; and / or the liquid level meter 300 also includes: a cover plate, the cover plate is connected to the fourth shell 310 to close the control board 330.

[0176] In this technical solution, a style of a fourth shell 310 is further provided. A limiting slot 312 is formed on the side of the fourth shell 310 that is away from the mounting slot 311. The control board 330 is arranged in the limiting slot 312, so that the fixation of the control board 330 is more reliable, and the probability of the control board 330 loosening is reduced. By sealing the fourth shell 310 by the cover plate, the probability of liquid invading the control board 330 can be reduced, making the use of the liquid level meter 300 more reliable.

[0177] like Figures 11 to 15 As shown, in a feasible embodiment, the fish tank also includes: a sewage pipe 150, one end of which is connected to the sedimentation unit 131; a first output pipeline 160, which is connected to the sewage pipe 150 and the other end is used to discharge sewage; and an electric control valve 170, which is arranged on the first output pipeline 160.

[0178] In this technical solution, the structural composition of the fish tank is further provided. The fish tank can also include a drain pipe 150 and a first output pipe 160. One end of the drain pipe 150 is connected to the bottom of the sedimentation bin 1311 of the sedimentation unit 131, and then the first output pipe 160 is connected to the drain pipe 150, so that the dirt in the sedimentation unit 131 can be discharged, especially the excess fish food and fish feces produced in the fish tank can be discharged. Through the setting of the electric control valve 170, the opening of the first output pipe 160 can be controlled by electric control. The opening cycle of the electric control valve 170 can be set by the processor, and the dirt can be discharged regularly, which can further reduce the frequency of manual maintenance and improve the user experience.

[0179] like Figures 11 to 15 As shown, in a feasible embodiment, the fish tank also includes: a second output pipeline 180, one end of the second output pipeline 180 is connected to the sewage pipe 150, and the other end is used to discharge sewage; a manual valve 190, and the manual valve 190 is arranged on the second output pipeline 180.

[0180] In this technical solution, the fish tank can also include a second output pipe 180, which is also connected to the sewage pipe 150. A manual valve 190 is provided on the second output pipe 180. When the fish tank is in normal working condition, the manual valve 190 is in a closed state. When the user opens the manual valve 190, manual intervention can be used to empty the dirt, so that the use of the fish tank can be convenient for maintenance while improving the freedom of use.

[0181] like Figures 11 to 15 As shown, in a feasible embodiment, the fish tank also includes: an emptying pipe 1100, one end of the emptying pipe 1100 is connected to the purification unit 132, the conveying unit 133 and the bottom of the cylinder body 110, and the other end is connected to the second output pipeline 180; wherein, there are two or more emptying pipes 1100, the purification unit 132 is connected to at least one emptying pipe 1100, the conveying unit 133 is connected to at least one emptying pipe 1100, and the cylinder body 110 is connected to at least one emptying pipe 1100.

[0182] In this technical solution, the fish tank may further include an emptying pipe 1100, through which the liquid in the purification unit 132, the conveying unit 133 and the tank body 110 may be drained, making the use of the fish tank more convenient and facilitating water changes in the entire fish tank.

[0183] In some examples, there can be four drain pipes 1100, that is, the first purification chamber 1321, the second purification chamber 1322, the pump chamber 1331 and the cylinder body 110 are respectively connected to an drain pipe 1100, so that the first purification chamber 1321, the second purification chamber 1322, the pump chamber 1331 and the cylinder body 110 can be emptied separately, making the fish tank more convenient to use.

[0184] In one feasible embodiment, the drain ends of the first output pipe 160, the drain ends of the second output pipe 180, and the external water pipe 142 are disposed on the same side of the cabinet 120. This arrangement facilitates installation of the fish tank in the user's home and facilitates concealing the drain ends of the first output pipe 160, the drain ends of the second output pipe 180, and the external water pipe 142. For example, by placing the drain ends of the first output pipe 160, the drain ends of the second output pipe 180, and the external water pipe 142 close to the wall of the user's home, the fish tank can be made more aesthetically pleasing.

[0185] like Figures 11 to 15 As shown, in a feasible embodiment, the first output pipeline 160 and the second output pipeline 180 share a drain end. Such an arrangement can make the pipeline division of the fish tank simpler and the structure more compact.

[0186] like Figure 16As shown, in a feasible embodiment, the cylinder body 110 includes: a accommodating chamber 111; an overflow groove 112, and the overflow groove 112 is connected to the accommodating chamber 111; wherein, one end of the water inlet pipe 1334 is connected to the bottom of the overflow groove 112, and the circulation pipe 1333 passes through the overflow groove 112 and is connected to the top of the cylinder body 110.

[0187] This technical solution further provides a structural component of a cylinder body 110. The cylinder body 110 may include a receiving chamber 111 and an overflow trough 112. The receiving chamber 111 may be used to hold water and raise fish. As the fish are raised for a longer period of time, dirt, such as excess fish food and feces, may be generated in the cylinder body 110. The dirt may enter the overflow trough 112 and, after overflowing, enter the sewage treatment assembly 130 through the water inlet pipe 1334 for sewage treatment. The sewage treated by the sewage treatment assembly 130, or the water added when the cylinder is started, may enter the cylinder body 110 through the circulation pipe 1333. The circulation pipe 1333 passes through the overflow trough 112 and is connected to the top of the cylinder body 110. On the one hand, the space of the overflow trough 112 can be fully utilized, reducing the occupation of the circulation pipe 1333 by the fish raising space of the cylinder body 110; on the other hand, the circulation pipe 1333 can be better concealed, making the fish tank more beautiful.

[0188] like Figures 16 to 18 As shown, in a feasible embodiment, the fish tank water pipe 210 is connected to one end of the circulation pipe 1333 close to the cylinder body 110; and / or the fish tank also includes: a cylinder opening valve 220, which is arranged on the cylinder opening water pipe 210.

[0189] In this technical solution, a connection position for the cylinder opening water pipe 210 is further provided. The cylinder opening water pipe 210 is connected to one end of the circulation pipe 1333 close to the cylinder body 110. This arrangement facilitates the assembly of the cylinder opening water pipe 210. Combined with the arrangement of the cylinder opening valve 220, it is convenient for the user to control the opening of the cylinder opening valve 220, and it is convenient for the user's hand to contact the cylinder opening valve 220, making the control of the opening and closing of the cylinder opening water pipe 210 more convenient.

[0190] like Figures 16 to 18 As shown, in one feasible embodiment, the external water pipe and the water supply pipe 210 share a water inlet port. With this arrangement, when using the fish tank, the user only needs to connect a tap water pipe to the fish tank to simultaneously realize the water supply, water replenishment and water change of the fish tank, making the use of the fish tank more convenient.

[0191] like Figure 25 As shown, according to the second aspect of the embodiment of the present application, a control method is proposed, which is applied to the fish tank as any of the above technical solutions. The control method includes:

[0192] Step 101: in response to the water changing instruction, acquiring the liquid level information in the sewage treatment component;

[0193] Step 102: when the liquid level information is lower than the first liquid level threshold, supplementing the output end of the sewage treatment component with the water inlet component until the liquid level reaches or exceeds the first liquid level threshold;

[0194] Step 103: controlling the sewage treatment component to discharge liquid until the liquid level information is lower than the second liquid level threshold;

[0195] Step 104: supplementing the output end of the sewage treatment component with the water inlet component, and then the sewage treatment component supplements the fish tank with liquid.

[0196] It can be understood that the liquid level information can be acquired by the liquid level sensor 300 in the pump compartment 1331.

[0197] In some examples, when the fish tank provided by the embodiment of the present application includes a host controller, the host controller can execute a computer program to implement the following control method:

[0198] 201, when the heating module arranged in the tank body is heating, acquiring the switch state of the temperature control switch arranged in the heating module.

[0199] The tank body 110 is the area in the fish tank where water is stored, and the heating module 143 is arranged inside the tank body 110. The heating module 143 can be an instant heating module 143, which is provided with a heating element 14316, including but not limited to a graphene heating element, a thick film resistance wire heating element, and a flange heating element, which is attached to the stainless steel annular outer wall to form a tubular structure. The heating element 14316 generates a large amount of Joule heat through the loading of high-power alternating current, so that the water flowing in the stainless steel pipe is heated. At the same time, the heating module 143 is provided with a temperature control switch, and the host controller as the current execution subject acquires the switch state to determine the detection result of the heating module 143.

[0200] In the embodiment of the present application, the temperature control switch includes a first temperature control switch 1434 arranged at one end of the heating module 143, and a second temperature control switch 1435 arranged at the other end of the heating module 143. At the same time, since the cold water inlet is arranged in the tank body 110 to deliver cold water, and the hot water outlet is arranged in the tank body 110 to deliver hot water after heating, one end of the instant heater is arranged at the cold water inlet of the tank body 110, and the other end of the instant heater is arranged at the hot water outlet of the tank body 110, so that the liquid flowing into the heating module 143 from the cold water inlet is heated and then flows out from the hot water outlet.

[0201] In a specific implementation, the first temperature-controlled switch 1434 and the second temperature-controlled switch 1435 are components comprising a temperature-sensing surface and two electrode pins. When the contact surface contacts the heating element 14316, the heating element 14316 generates temperature. When the heating element 14316 reaches the operating temperature of the temperature-controlled switch, the metal sheet inside the temperature-controlled switch deforms, causing the communication to be disconnected, causing the switch to be disconnected. Otherwise, when the heating element 14316 has not reached the operating temperature of the temperature-controlled switch, the temperature-controlled switch remains closed.

[0202] 202. When the first switch state of the first temperature-controlled switch is circuit disconnection, or the second switch state of the second temperature-controlled switch is communication disconnection, determine that the state detection result is an abnormal heating state, and output the state detection result.

[0203] In the embodiment of the present application, since the heating module 143 includes a heating element 14316, the temperature sensing surfaces of the first temperature control switch 1434 and the second temperature control switch 1435 are in contact with the heating element 14316 respectively. Figure 2 As shown, the electrode ends of the first temperature-controlled switch 1434 are respectively connected to the power supply circuit, and the electrode ends of the second temperature-controlled switch 1435 are respectively connected to the main control circuit. The first temperature-controlled switch 1434 or the second temperature-controlled switch 1435 can be closed or disconnected according to the heating temperature of the heating element 14316, so that the main control circuit or the power supply circuit is connected or disconnected. The power supply circuit can be composed of an AC power supply with controllable power, and the main control circuit can be composed of a main controller or a main control chip of the current execution subject. Furthermore, the main controller as the current execution subject can determine the status detection result of the instant heating component based on the first switch state and / or the second switch state, and output it. Among them, the switch state can represent the state of the temperature-controlled switch being open or closed. Since the temperature-controlled switch is connected to the circuit, it can be identified by whether it can receive an electrical signal. The embodiment of the present application does not make specific limitations. Specifically, when the first switch state of the first temperature control switch 1434 is circuit disconnected, or the second switch state of the second temperature control switch 1435 is communication disconnected, it indicates that the temperature of the heating element 14316 in the heating module 143 is too high and has reached the operating temperature, causing the switch to disconnect. In other words, the state detection result is determined to be an abnormal heating state, and this state detection result is output. The abnormal heating state can be caused by scale. For example, since the heating element 14316 in the instant heating assembly preferably uses a heating tube formed of a metal resistance wire, when there is no scale in the heating tube, the heating tube can heat to the required temperature of the fish tank in a short time. However, when scale is present in the heating tube and it is in an abnormal heating state, the scale will affect the heating efficiency. Therefore, the operating temperature of the first temperature control switch 1434 and the second temperature control switch 1435 can be adjusted to a temperature that is consistent with the presence of scale, such as 200°C, etc., which is not specifically limited in the embodiment of the present application.

[0204] In some embodiments, the heating element 14316 is a heating tube, and the instant heater is placed vertically within the cylinder body 110. A cold water inlet is provided at the downward end, and a hot water outlet is provided at the upward end. Mechanical temperature control switches are provided at the upper and lower ends, namely, a first temperature control switch 1434 and a second temperature control switch 1435. The first temperature control switch 1434 is connected in series with the power circuit, and the second temperature control switch 1435 is connected in series with the communication circuit of the main controller. At this time, since the wall temperature of the heating tube is much higher than the temperature of the heated water during the heating process, the models of the first temperature control switch 1434 and the second temperature control switch 1435 can be selected according to the operating temperature of 120°C, 100°C, etc., and this embodiment of the application does not specifically limit this.

[0205] In some embodiments, since the second temperature control switch 1435 is arranged at the hot water outlet, when the second switch state of the second temperature control switch 1435 is that the communication line based on the main controller is disconnected, it means that the communication is disconnected, that is, the temperature of the heating element 14316 detected by the second temperature control switch 1435 reaches the operating temperature of the temperature control switch. Therefore, the switch is disconnected. The main controller of the current executing entity can determine the status detection result at this time as being in an abnormal heating state, and effective heating control cannot be achieved.

[0206] In some embodiments, because the first temperature control switch 1434 is located at the cold water inlet and the second temperature control switch 1435 is located at the hot water outlet, the temperature at the first temperature control switch 1434 is typically lower than the temperature at the second temperature control switch 1435. In this case, during the heating process, the temperature at the second temperature control switch 1435 reaches the operating temperature of the temperature control switches first. Therefore, the main controller first detects that the second temperature control switch 1435 has triggered a communication disconnection, i.e., is in the second switching state of communication disconnection. The main controller then generates a stop heating instruction to power off the heating module 143. However, in some cases, when the second temperature control switch 1435 is in an abnormal state, the second temperature control switch 1435 cannot disconnect the communication. The temperature at the first temperature control switch 1434 at the cold water inlet continues to rise until it reaches the operating temperature of the temperature control switch. At this point, the first temperature control switch 1434 automatically triggers a circuit disconnection, i.e., is in the first switching state of circuit disconnection, so that the power supply to the heating module 143 is no longer supplied, thus implementing secondary overheating protection and determining that the heating module 143 is in an abnormal state.

[0207] In another embodiment of the present application, for further definition and explanation, the step of determining a state detection result based on the first switch state and / or the second switch state includes:

[0208] When the first switch state is circuit connected and the second switch state is communication connected, the state detection result is determined to be a normal heating state, and the first real-time temperature, the second real-time temperature and the third real-time temperature are obtained to perform temperature control based on the first real-time temperature, the second real-time temperature and the third real-time temperature.

[0209] In order to achieve temperature control protection of the water temperature in the cylinder, when the first temperature control switch 1434 and the second temperature control switch 1435 are of the same model, since the setting positions of the first temperature control switch 1434 and the second temperature control switch 1435 are different, the first temperature control switch 1434 is connected in series in the power supply circuit, and accordingly, the first switch state corresponding to the first temperature control switch 1434 is determined based on the power-on state of the main control circuit, and the second temperature control switch 1435 is connected in series with the communication line of the main controller, and accordingly, the second switch state is determined based on the collected electrical signal results.

[0210] In some embodiments, when the first switch state is circuit connected and the second switch state is communication connected, the state detection result is determined to be a normal heating state, and the first real-time temperature, the second real-time temperature and the third real-time temperature are obtained to perform temperature control based on the first real-time temperature, the second real-time temperature and the third real-time temperature. Among them, the first real-time temperature is the target temperature in the cylinder, the second real-time temperature is the temperature at the cold water inlet, and the third real-time temperature is the temperature at the hot water outlet. The embodiments of this application do not make specific limitations. When the collected second real-time temperature is lower than the target heating temperature, it means that the main controller can continue to heat through temperature control so that the temperature in the cylinder meets the standard. At this time, temperature control can be performed based on the first real-time temperature, the second real-time temperature and the third real-time temperature.

[0211] In another embodiment of the present application, for further definition and explanation, the steps further include:

[0212] Obtaining a third switch state of the third temperature control switch 1437;

[0213] When the third switch state is circuit disconnection, it is determined that the state detection result is a dry-burning state.

[0214] In order to avoid dry burning due to lack of water in the cylinder 110 and to ensure the safety and effectiveness of temperature control, the heating module 143 also includes a third temperature control switch 1437. The third temperature control switch 1437 is connected to the power supply circuit and can be set between the first temperature control switch 1434 and the second temperature control switch 1435. The third temperature control switch 1437 is set on the heating tube in the same installation method as the first temperature control switch 1434 and the second temperature control switch 1435. At the same time, the target switch temperature of the third temperature control switch 1437 is greater than the target switch temperature of the first temperature control switch 1434 and the second temperature control switch 1435.

[0215] In some embodiments, the main controller detects the third switch state of third temperature control switch 1437 during the heating process. In this case, in special circumstances, when first temperature control switch 1434 and second temperature control switch 1435 are abnormal and heating module 143 continues to heat, if the third switch state of third temperature control switch 1437 is detected as a circuit break, it indicates that the temperature of heating element 14316 is too high, and a dry-heat condition may occur. When third temperature control switch 1437 reaches the operating temperature, the circuit break is triggered, and the state detection result is determined to be a dry-heat condition. Furthermore, because third temperature control switch 1437 is connected in series with the power circuit, the power circuit is disconnected, and the heating module 143 is also powered off, achieving the purpose of stopping heating.

[0216] In another embodiment of the present application, for further definition and explanation, before the step of obtaining the switch state of the temperature control switch provided in the heating module 143, the method further includes:

[0217] In response to a heating instruction, generating a pulse width modulation signal with a constant frequency and an adjustable duty cycle based on the first real-time temperature, the second real-time temperature, and the third real-time temperature;

[0218] A pulse width modulation signal is sent to the zero-crossing detection component to control the heating element 14316 of the heating module 143 to perform heating.

[0219] In order to achieve precise heating control of the water temperature of the new water and the target water temperature in the fish tank when the water is changed, the main controller as the current execution subject obtains the first real-time temperature, the second real-time temperature and the third real-time temperature, wherein the first real-time temperature, the second real-time temperature and the third real-time temperature can all be collected by the temperature measuring element. At this time, since the heating tube in the heating module 143 is equivalent to a high-power resistor, if the AC frequency is 50Hz, 100 sinusoidal half-waves are loaded onto the heating element 14316 per second to generate heating power, the main controller generates a pulse width modulation signal with a constant frequency and an adjustable duty cycle based on the first real-time temperature, the second real-time temperature and the third real-time temperature, i.e., a PWM signal, so as to open the gate during the high level period so that the sinusoidal AC can be normally loaded onto the heating module 143 through the control circuit. The PWM signal closes the gate during the low level period, and the AC cannot be loaded onto the heating module 143. In addition, the main control circuit including the main controller may also include a zero-crossing detection component to ensure that the gate switch operates only at the zero-crossing point of the sinusoidal AC, so as to avoid opening or closing the gate at the high amplitude position of the sinusoidal AC, generating high-intensity conducted noise and radiated noise, and interfering with the power quality of the mains network or the device end.

[0220] In some embodiments, in order to achieve accurate temperature control, the period and duty cycle of the PWM signal must be precisely matched with the period of the sinusoidal alternating current, and the on / off timing of the zero-crossing detection component must be precisely controllable. Figure 3 As shown, when generating a PWM signal, the preferred minimum high-level duration is 10ms (1 sinusoidal AC half-wave cycle), and is increased in integer multiples of 10ms. At this time, it can be ensured that within the time of each turning on of the zero-crossing detection component, an expected integer number of complete sinusoidal half-waves pass through the load, so that the power value can be accurately controlled and the heating effect is stable.

[0221] In some embodiments, in order to achieve the fineness of power control (the number of gears n, i.e., 1 to n times of 10ms) and the real-time performance of power regulation (the frequency of PWM, i.e., the number of power adjustments per unit time), the higher the PWM frequency, the more sensitive the power regulation but the fewer gears. Conversely, the lower the PWM frequency, the finer the gears but the worse the real-time performance of power regulation. Therefore, preferably, the PWM signal is set to 4Hz (25 gears) or 5Hz (20 gears), which is not specifically limited in the embodiments of this application. In addition, in order to synchronize the phase difference between the PWM signal and the AC power, the PWM signal is preferably configured to have a high-level duration equal to the AC half-wave time of 10ms, or an integer multiple n of 10ms, to ensure that there is only 1 or n zero crossings every 10ms. At the same time, within each PWM signal cycle, a minimum half-wave power is achieved, so that by controlling the PWM duty cycle to n times of 10ms, n times the half-wave power in a single cycle is achieved. Controlling the power size is to control the size of the n value. For example: the PWM frequency is 4Hz, the period is 250ms, and n=250 / 10=25 gears. That is, the power can be adjusted four times per second, and the power value is subdivided into 25 levels. At this time, if the high level of the PWM signal is not an integer multiple of 10ms, the zero crossing point will be lost or added, the AC half-wave number will be misaligned, and the output power will fluctuate.

[0222] It should be noted that after the main controller generates the PWM signal based on the first real-time temperature, the second real-time temperature and the third real-time temperature, Figure 4 In the main control circuit shown, the PWM signal opens the gate during its high-level period, allowing the sinusoidal AC to pass through the control circuit and be loaded onto the heating module 143 normally. The PWM signal closes the gate during its low-level period, preventing AC from being loaded onto the heating module 143. Furthermore, to prevent the gate from being opened or closed at high-amplitude positions of the sinusoidal AC, a zero-crossing detection component is provided in the main control circuit. This component sends the PWM signal to the zero-crossing detection circuit to ensure that the gate switch operates only at the zero-crossing point of the sinusoidal AC, controlling the heating element 14316 of the heating module 143 to heat.

[0223] In addition, in order to achieve the intelligent precise temperature control purpose, the temperature measuring assembly arranged in the cylinder body 110 can include three temperature measuring elements, which are respectively arranged in the water in the cylinder body 110 and at the cold water inlet and the hot water outlet, to collect real-time temperatures, so as to determine the PWM signal based on the PID algorithm. The temperature measuring element can be an NTC temperature sensor, and the PID algorithm can be set based on the temperature control requirement, which is not limited in the embodiments of the application.

[0224] In some embodiments, when the second real-time temperature is lower than the in-cylinder temperature (the collected first real-time temperature), the main control unit starts the heating function of the heating module 143, takes the real-time temperature difference between the first real-time temperature and the second real-time temperature as an input parameter of the PID algorithm, and takes the third real-time temperature after heating as another input parameter of the PID algorithm for calculation. At the same time, the main control circuit adjusts the alternating current power of the heating tube in real time through the output PWM signal determined by the PID algorithm, so that the third real-time temperature quickly and accurately tracks the target water temperature, and the purpose of real-time isothermal heating is achieved, and the isothermal output precision is within ±1°C.

[0225] In some embodiments, when the first switch state is circuit communication and the second switch state is communication communication, the instant heating module 143 can be continuously controlled to heat based on the PWM signal, which is not limited in the embodiments of the application.

[0226] In another embodiment of the application, in order to further limit and illustrate, the steps further include:

[0227] When the third real-time temperature is greater than the preset temperature threshold, a stop heating control instruction is generated.

[0228] In order to avoid that the added hot water makes the water temperature in the fish tank too high and causes the temperature control to fail, the main control unit collects the third real-time temperature through the temperature measuring element arranged at the hot water outlet, and compares the third real-time temperature with the preset temperature threshold which is preset as the maximum heating temperature in the cylinder body 110. When the third real-time temperature is greater than the preset temperature threshold, it indicates that the water temperature is too high, and the main control unit generates a stop heating control instruction to control the power supply circuit to be powered off.

[0229] The embodiment of the present application provides a state detection method of a heating module 143, a water temperature control system, and a fish tank. The embodiment of the present application obtains the switch state of a temperature control switch provided in the heating module 143 when the heating module 143 provided in the tank body 110 is heating. The temperature control switch includes a first temperature control switch 1434 provided at one end of the heating module 143 and a second temperature control switch 1435 provided at the other end of the heating module 143. One end is provided at the cold water inlet of the tank body 110, and the other end is provided at the hot water inlet of the tank body 110. At the water outlet, the liquid flowing into the heating module 143 from the cold water inlet is heated and then discharged from the hot water outlet; when the first switch state of the first temperature control switch 1434 is that the circuit is disconnected, or the second switch state of the second temperature control switch 1435 is that the communication is disconnected, the state detection result is determined to be an abnormal heating state, and the state detection result is output, thereby realizing the purpose of heating state detection of the heating module 143 during the heating process, and confirming the heating situation without manual monitoring, avoiding excessive water temperature or ineffective heating, thereby improving the effectiveness of water temperature control.

[0230] In some examples, the system temperature measuring component includes a first temperature measuring element 340, a second temperature measuring element 1432, and a third temperature measuring element 1433. The first temperature measuring element 340 is used to measure a first real-time temperature inside the cylinder, the second temperature measuring element 1432 is used to measure a second real-time temperature at the cold water inlet, and the third temperature measuring element 1433 is used to measure a third real-time temperature at the hot water outlet.

[0231] In the present invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0232] In the description of the present invention, it should be understood that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0233] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0234] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A fish tank, characterized in that: include: Cylinder body; a cabinet body, on which the cylinder body is arranged; A sewage treatment assembly is disposed in the cabinet and includes a water inlet pipe and a circulation pipe. One end of the water inlet pipe is connected to the cylinder, and the other end is connected to the input end of the sewage treatment assembly. One end of the circulation pipe is connected to the output end of the sewage treatment assembly, and the other end is connected to the cylinder. A water pipe for opening the cylinder, one end of which is connected to the circulation pipe; A water inlet component includes a filter unit, a heating module and an external water pipe. The external water pipe is connected to the filter unit. The output end of the filter unit is connected to the heating module. The output end of the heating module is connected to the output end of the sewage treatment component.

2. The fish tank according to claim 1, characterized in that The heating module comprises: Heating tube; a second temperature measuring element and a third temperature measuring element, wherein the second temperature measuring element is arranged at the input end of the heating tube, and the third temperature measuring element is arranged at the output end of the heating tube, and the second temperature measuring element and the third temperature measuring element are used to detect the temperature of the liquid flowing through the heating tube; A first temperature-controlled switch and a second temperature-controlled switch, wherein the first temperature-controlled switch and the second temperature-controlled switch are both connected to the heating element of the heating tube, the first temperature-controlled switch is arranged at the input end of the heating tube, and the second temperature-controlled switch is arranged at the output end of the heating tube.

3. The fish tank according to claim 2, characterized in that The heating module also includes: a third shell, wherein the heating tube is arranged in the third shell; Wherein, the first temperature-controlled switch and the second temperature-controlled switch are both connected to the third housing and connected to the heating element of the heating tube through the third housing; a third temperature-controlled switch, the third temperature-controlled switch being connected to the heating element of the heating tube and being arranged between the first temperature-controlled switch and the second temperature-controlled switch; The disconnection temperature of the third temperature-controlled switch is greater than the disconnection temperature of the first temperature-controlled switch and greater than the disconnection temperature of the second temperature-controlled switch.

4. The fish tank according to claim 3, characterized in that The heating module also includes: a power supply circuit and a main control circuit, wherein the second temperature-controlled switch is connected to the main control circuit, the first temperature-controlled switch is connected to the power supply circuit, the third temperature-controlled switch is connected to the power supply circuit and / or the main control circuit, and the main control circuit is connected to the power supply circuit; When the second temperature-controlled switch reaches a first temperature threshold, a first signal is sent to the main control circuit to disconnect the power circuit through the main control circuit; when the first temperature-controlled switch reaches a first temperature threshold, the power circuit is controlled to be disconnected.

5. The fish tank according to claim 2, characterized in that The heating tube comprises: The tube body, the heating element includes a heating circuit, and the heating circuit is plated on the tube body; A flow guide pipe, the flow guide pipe is arranged in the pipe body, and a flow gap is formed between the flow guide pipe and the inner wall of the pipe body; Sealing members, the sealing members being arranged at both ends of the tube body; an input port connected to one end of the tube body and used for inputting liquid, the liquid flowing through the tube body through the flow gap; an output port connected to one end of the tube body and used for outputting the heated liquid; Wherein, the second temperature measuring element is connected to the input port, and the third temperature measuring element is connected to the output port.

6. The fish tank according to any one of claims 1 to 5, characterized in that The sewage treatment assembly includes: a sedimentation unit, a purification unit and a conveying unit connected in sequence, the sedimentation unit is used to receive sewage conveyed through the cylinder, and the conveying unit is used to obtain circulating water after the sewage is precipitated and purified and supplied to the cylinder; The water inlet pipe is connected to the sedimentation unit, and the circulation pipe is connected to the conveying unit.

7. The fish tank according to claim 6, characterized in that The filtering unit comprises: a first filter unit, the external water pipe being connected to the first filter unit; a second filter unit, wherein the output end of the first filter unit is connected to the second filter unit; Wherein, the first filter unit includes a first housing and a particle filter element arranged in the first housing; Wherein, the second filter unit includes a second housing and an activated carbon filter element arranged in the second housing; an adapter, the adapter being connected to the input end of the filter unit, and the external water pipe being connected to the adapter; a decompression unit, the decompression unit being disposed between the first filter unit and the external water pipe; The precipitation unit comprises: Sedimentation tank; An inclined plate, the inclined plate being obliquely arranged in the sedimentation bin; The sedimentation space is used to receive sewage outputted from the cylinder body. After the sewage is settled in the sedimentation bin by the inclined plate, the liquid overflows and enters the purification unit. The purification unit comprises: a first purification chamber and a second purification chamber connected in sequence, wherein the first purification chamber is used to receive liquid overflowing from the sedimentation chamber; A plate body, wherein a plurality of through holes are formed on the plate body, and the plate body is arranged on the top of the first purification chamber; a third filter unit, the third filter unit being arranged at the connection between the first purification bin and the sedimentation bin; a fourth filter unit and a fifth filter unit, the fourth filter unit and the fifth filter unit being stacked and arranged on the top of the first purification bin and located at the bottom of the plate body; The conveying unit includes: a pump compartment, the pump compartment being used to receive the liquid outputted by the purification unit; a pump body, the pump body being arranged in the pump compartment; A circulation pipe, one end of which is connected to the pump body, and the other end of which is connected to the cylinder body.

8. The fish tank according to any one of claims 1 to 5, characterized in that: Also includes: a sewage pipe, one end of which is connected to the sedimentation unit of the sewage treatment assembly; a first output pipeline, the first output pipeline being connected to the sewage pipe, and the other end of the first output pipeline being used for discharging sewage; an electrically controlled valve, the electrically controlled valve being arranged on the first output pipeline; a second output pipeline, one end of which is connected to the sewage pipe and the other end of which is used to discharge sewage; A manual valve is provided on the second output pipeline.

9. The fish tank according to claim 8, characterized in that Also includes: an emptying pipe, one end of which is connected to the purification unit of the sewage treatment assembly, the bottom of the delivery unit and the bottom of the cylinder, and the other end of which is connected to the second output pipeline; There are multiple drain pipes, the purification unit is connected to at least one drain pipe, the delivery unit is connected to at least one drain pipe, and the cylinder is connected to at least one drain pipe.

10. A control method, characterized in that: Applied to the fish tank according to any one of claims 1 to 9, the control method comprises: In response to a water change instruction, obtaining liquid level information in the sewage treatment component; When the liquid level information is lower than a first liquid level threshold, replenishing liquid to the output end of the sewage treatment component through the water inlet component until the liquid level reaches or exceeds the first liquid level threshold; Controlling the sewage treatment component to discharge liquid until the liquid level information is lower than a second liquid level threshold; The water inlet assembly is used to replenish liquid to the output end of the sewage treatment assembly, and then the sewage treatment assembly replenishes liquid to the fish tank.

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