Heating module and fish tank

Abstract

The embodiment of the application discloses a heating module and a fish tank. The heating module comprises a heating pipe, a second temperature measuring element, a third temperature measuring element, a first temperature control switch and a second temperature control switch. During use of the heating module, the second temperature measuring element and the third temperature measuring element can be used to detect the inlet temperature and the outlet temperature of the heating assembly respectively. On the one hand, the working power of the heating pipe can be controlled, the heating efficiency can be improved, and instant heating can be achieved while ensuring that the heating can reach the expected temperature. On the other hand, the feeding of fish can be affected by excessively high heating temperature. The first temperature control switch and the second temperature control switch can be used to detect the heating temperature at the input end and the output end of the heating pipe respectively. The heating state of the heating module can be detected and controlled based on this, and the abnormal state of the heating module can be found in time, so that the use of the heating module is safer.

Description

Technical Field

[0001] This application relates to the field of aquarium technology, and more particularly to a heating module and aquarium. Background Technology

[0002] With the diversification of smart home devices, fish tanks have become indispensable for users who want to optimize their indoor environment and for fish enthusiasts. Currently, traditional fish tanks typically use a method of sun-drying the water during water changes: placing the tank on a balcony for several days to ensure that residual chlorine and other substances harmful to ornamental fish in the tap water have decomposed and that the tap water has reached the ambient temperature; or heating is done using a heating module. However, to avoid overheating, the heating process requires manual monitoring, making it difficult to effectively detect the heating status and significantly affecting the effectiveness of water temperature control. Utility Model Content

[0003] The present invention introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This part of the present invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the first aspect of this utility model provides a heating module.

[0006] The second aspect of this utility model provides a fish tank.

[0007] In view of this, a heating module is provided according to a first aspect of the embodiments of this application, comprising:

[0008] Heating element;

[0009] A second temperature sensing element and a third temperature sensing element are used to detect the temperature of the liquid flowing through the heating tube. The second temperature sensing element is disposed at the input end of the heating tube, and the third temperature sensing element is disposed at the output end of the heating tube.

[0010] A first temperature control switch and a second temperature control switch are both connected to the heating element of the heating tube. The first temperature control switch is located at the input end of the heating tube, and the second temperature control switch is located at the output end of the heating tube.

[0011] In one feasible implementation, the heating module further includes:

[0012] The housing, wherein the heating element is disposed within the housing;

[0013] The first temperature control switch and the second temperature control switch are both connected to the housing and pass through the housing to the heating element of the heating tube.

[0014] In one feasible implementation, the heating module further includes:

[0015] A third temperature control switch is connected to the heating element of the heating tube and is arranged between the first temperature control switch and the second temperature control switch.

[0016] In one feasible implementation, the disconnection temperature of the third temperature control switch is greater than the disconnection temperature of the first temperature control switch and greater than the disconnection temperature of the second temperature control switch.

[0017] In one feasible implementation, the heating module further includes:

[0018] The circuit includes a power supply circuit and a main control circuit. The second temperature control switch is connected to the main control circuit, the first temperature control switch is connected to the power supply circuit, and the third temperature control switch is connected to the power supply circuit and / or the main control circuit. The main control circuit is connected to the power supply circuit.

[0019] Specifically, when the second temperature control switch reaches the first temperature threshold, a first signal is sent to the main control circuit to disconnect the power supply circuit; when the first temperature control switch reaches the first temperature threshold, the power supply circuit is controlled to disconnect.

[0020] In one feasible implementation, the heating element includes:

[0021] The tube body, wherein the heating element includes heating circuitry, the heating circuitry being plated onto the tube body;

[0022] A flow guide tube is disposed within the tube body, and a flow gap is formed between the flow guide tube and the inner wall of the tube body;

[0023] A sealing element is disposed at both ends of the tube body.

[0024] In one feasible implementation, the heating element further includes:

[0025] An input port is connected to one end of the tube body for inputting liquid, which flows through the tube body via a flow gap;

[0026] An output port, connected to one end of the tube, is used to output the heated liquid;

[0027] The second temperature sensing element is connected to the input port, and the third temperature sensing element is connected to the output port.

[0028] A second aspect of the embodiments of this application provides a fish tank, comprising:

[0029] Cylinder block;

[0030] The cabinet, wherein the cylinder is mounted on the cabinet;

[0031] The water inlet assembly includes a heating module and an external water pipe as described in any of the above technical solutions, the external water pipe being connected to the heating module, and the output end of the heating module being connected to the cylinder body.

[0032] In one feasible implementation, the water inlet assembly further includes:

[0033] A filtration unit is disposed between the external water pipe and the heating module; and / or

[0034] A descaling solution container is disposed inside the cabinet and connected to the heating module.

[0035] In one feasible implementation, the filtering unit includes:

[0036] The first filtration unit is connected to the external water pipe.

[0037] The second filter unit is connected to the output of the first filter unit, and the output of the second filter unit is connected to the cylinder body;

[0038] The first filtration unit includes a first housing and a particulate filter element disposed within the first housing;

[0039] The second filtration unit includes a second housing and an activated carbon filter element disposed within the second housing.

[0040] Compared with the prior art, the present invention has at least the following beneficial effects:

[0041] The heating module provided in this application includes a heating tube, a second temperature measuring element, a third temperature measuring element, a first temperature control switch, and a second temperature control switch. This heating module can be used as a component of a fish tank. For example, water from outside the fish tank can flow through the heating tube and then be heated by the heating tube. After the water is heated to the temperature required for fish rearing, it can be supplied to the fish tank. Based on this, there is no need for the user to let the water sit in the sun, making the use of the fish tank more convenient. During the use of the heating module, the inlet and outlet temperatures of the heating element can be detected by the second and third temperature sensing elements, respectively. This facilitates control of the heating element's operating power, ensuring heating reaches the expected temperature while improving heating efficiency and enabling immediate heating. Furthermore, it prevents excessively high heating temperatures from affecting fish husbandry. The first and second temperature control switches can sense the heating temperature at the input and output ends of the heating element, allowing for monitoring and control of the heating module's heating status. If the temperature detected by the first and second temperature control switches is too high, it indicates that the heating module is not meeting the water heating requirements even at a higher operating temperature. In this case, the heating module may be malfunctioning and should be shut down immediately for safer operation.

[0042] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0043] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0044] Figure 1 A schematic structural diagram of a heating module according to one embodiment of this application;

[0045] Figure 2 A schematic structural diagram of the exploded state of a heating module according to an embodiment of this application;

[0046] Figure 3 A schematic cross-sectional structural diagram of a heating module according to an embodiment of this application;

[0047] Figure 4 A schematic structural diagram of a heating module according to one embodiment of this application from another angle;

[0048] Figure 5 A schematic structural diagram of a heating module according to one embodiment of this application from another angle;

[0049] Figure 6 A schematic structural diagram of the heating tube of a heating module according to an embodiment of this application;

[0050] Figure 7 A schematic structural diagram of the first temperature control switch of a heating module according to an embodiment of this application;

[0051] Figure 8 A schematic structural block diagram of the circuit connection relationship of a heating module according to an embodiment of this application;

[0052] Figure 9 A schematic structural diagram of the water inlet assembly of a fish tank according to an embodiment of this application;

[0053] Figure 10 A schematic structural diagram of a fish tank according to one embodiment of this application;

[0054] Figure 11 This is a schematic flowchart illustrating the steps of a fish tank control method according to an embodiment of this application.

[0055] in, Figures 1 to 10 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0056] 143 heating module;

[0057] 1431 Heating element, 1432 Second temperature sensing element, 1433 Third temperature sensing element, 1434 First temperature control switch, 1435 Second temperature control switch, 1436 Housing, 1437 Third temperature control switch, 1438 Power supply circuit, 1439 Main control circuit;

[0058] 14311 Tube body, 14312 Flow guide tube, 14313 Seal, 14314 Input port, 14315 Output port, 14316 Heating element, 14317 Solder joint, 14341 Electrode pin, 14342 Contact surface;

[0059] 110 cylinder block, 120 cabinet, 140 water inlet assembly;

[0060] 141 Filter unit, 142 External water pipe, 1411 First filter unit, 1412 Second filter unit. Detailed Implementation

[0061] The following description provides numerous specific details to offer a more thorough understanding of the technical solutions provided by this invention. However, it will be apparent to those skilled in the art that the technical solutions provided by this invention can be implemented without one or more of these details.

[0062] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0063] Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many 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 so that the disclosure of the present invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0064] like Figures 1 to 8 As shown, a heating module 143 is provided according to a first aspect of the present application, comprising: a heating tube 1431; a second temperature sensing element 1432 and a third temperature sensing element 1433, wherein the second temperature sensing element 1432 is disposed at the input end of the heating tube 1431 and the third temperature sensing element 1433 is disposed at the output end of the heating tube 1431, the second temperature sensing element 1432 and the third temperature sensing element 1433 are used to detect the temperature of the liquid flowing through the heating tube 1431; a first temperature control switch 1434 and a second temperature control switch 1435, both of which are connected to the heating element 14316 of the heating tube 1431, the first temperature control switch 1434 being disposed at the input end of the heating tube 1431 and the second temperature control switch 1435 being disposed at the output end of the heating tube 1431.

[0065] The heating module 143 provided in this embodiment includes a heating tube 1431, a second temperature sensing element 1432, a third temperature sensing element 1433, a first temperature control switch 1434, and a second temperature control switch 1435. This heating module 143 can be used as a component of a fish tank. For example, external water can flow through the heating tube 1431 and be heated to the required temperature for fish rearing before being supplied to the fish tank. This eliminates the need for the user to allow the water to stand, making the fish tank more convenient to use. Due to the tubular design of the heating tube 1431, heat exchange can occur between the heating tube 1431 and the liquid as it flows through, thus heating the liquid. The tubular design allows for simultaneous flow and heating, enabling instant heating, making the heating module 143 particularly suitable as a component of a fish tank.

[0066] The heating module 143 provided in this application embodiment can detect the inlet and outlet temperatures of the heating component through the second temperature sensing element 1432 and the third temperature sensing element 1433 respectively during use. Based on this, on the one hand, it is convenient to control the operating power of the heating tube 1431, which can improve the heating efficiency while ensuring that the heating can reach the expected temperature, and can achieve instant heating; on the other hand, it can avoid the heating temperature being too high, which would affect the fish farming.

[0067] The heating module 143 provided in this embodiment can sense the heating temperature at the input and output ends of the heating tube 1431 by setting a first temperature control switch 1434 and a second temperature control switch 1435. Specifically, the first temperature control switch 1434 and the second temperature control switch 1435 can contact the heating tube with their sensing surfaces and disconnect when the temperature reaches the metal deformation temperature. Based on this, the heating state of the heating module 143 can be detected and controlled. If the detection structure temperature of the first temperature control switch 1434 and the second temperature control switch 1435 is too high, it means that even if the heating module 143 uses a higher temperature sensor, the heating temperature is still too high. If the operating temperature does not meet the heating requirements for the water, the heating module 143 may be malfunctioning. For example, if no liquid is flowing through the heating tube 1431, causing it to dry-burn, or if a thick layer of scale has accumulated on the inner wall of the heating tube 1431, affecting its ability to heat the liquid, these conditions will cause the detection results of the first temperature control switch 1434 and the second temperature control switch 1435 to rise, while the water temperature measured by the third temperature sensing element 1433 will not meet the requirements. In this case, the heating module 143 should be shut down in time to ensure safer use of the heating module 143.

[0068] The heating module 143 provided in this embodiment is equipped with a first temperature control switch 1434 at the input end of the heating tube 1431 and a second temperature control switch 1435 at the output end of the heating tube 1431. During normal operation, since the liquid to be heated flows in through the input end and out through the output end of the heating tube 1431, the detection result of the first temperature control switch 1434 should be slightly lower than that of the second temperature control switch 1435. When the heating module 143 malfunctions, it will be detected by the second temperature control switch 1435, which can control the heating module 143 to stop operating. Conversely, when the control circuit of the second temperature control switch 1435 malfunctions, the temperature of the first temperature control switch 1434 will also rise as the heating module 143 is used for longer periods. The first temperature control switch 1434 can then control the heating module 143 to shut down again. Through the first temperature control switch 1434 and the second temperature control switch 1435, dual-safety control of the heating module 143 can be achieved, making the use of the heating module 143 safer.

[0069] It is 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 are attached to the outer wall of the heating tube 1431 to form a tubular structure. The heating element 14316 generates a large amount of Joule heat instantaneously by applying high-power alternating current, thereby heating the water flowing inside the stainless steel tube.

[0070] It is understandable that the first temperature control switch 1434 and the second temperature control switch 1435 are components that include a temperature measuring surface and two electrode pins 14341. When the contact surface 14342 contacts the heating element 14316, the heating element 14316 generates temperature. When the heating element 14316 reaches the target temperature of the temperature control switch, the metal sheet inside the temperature control switch deforms, causing the communication to be disconnected and the switch to open. Otherwise, when the heating element 14316 has not reached the target temperature of the temperature control switch, the temperature control switch remains closed.

[0071] like Figure 1 As shown, in one feasible embodiment, the heating module 143 further includes: a housing 1436, and a heating tube 1431 disposed inside the housing 1436; wherein, the first temperature control switch 1434 and the second temperature control switch 1435 are both connected to the housing 1436 and pass through the housing 1436 to the heating element 14316 of the heating tube 1431.

[0072] In this technical solution, the structural composition of the heating module 143 is further provided. The heating module 143 may also include a housing 1436, through which the heating tube 1431 can be encapsulated, and at the same time, a mounting position is provided for the first temperature control switch 1434 and the second temperature control switch 1435.

[0073] like Figure 1 and Figure 2 As shown, in one 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.

[0074] In this technical solution, considering that the abnormal states of the heating module 143 mainly include two types, the first is that as the heating module 143 is used for a longer period of time, a lot of 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 disconnect temperature of the temperature control switch, but the heating of 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 burn dry. The heating module 143 provided in this application embodiment can detect and control the abnormality of the heating tube 1431 caused by scale 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 143 safer.

[0075] In one feasible implementation, the disconnection temperature of the third temperature control switch 1437 is greater than the disconnection temperature of the first temperature control switch 1434 and greater than the disconnection temperature of the second temperature control switch 1435.

[0076] 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 inside the heating tube 1431, while the third temperature control switch 1437 is used to detect the dry-burning status 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. 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; while 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 status of the heating module 143.

[0077] like Figure 8As shown, in one feasible embodiment, the heating module 143 further includes: a power supply circuit 1438 and a main control circuit 1439, a second temperature control switch 1435 connected to the main control circuit 1439, a first temperature control switch 1434 connected to the power supply circuit 1438, a third temperature control switch 1437 connected to the power supply circuit 1438 and / or the main control circuit 1439, and the main control circuit 1439 connected to the power supply circuit 1438; wherein, when the second temperature control switch 1435 reaches a 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 disconnect.

[0078] In this technical solution, the structural composition of the heating module 143 is further provided. The heating module 143 may include 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, 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 detect the abnormality of the heating module 143. When the heating temperature of the heating tube 1431 reaches the first temperature threshold, it indicates that even if the heating tube 1431 is heated at a higher temperature, the heating of the liquid is still insufficient. If the temperature has not yet reached the heating requirement, the second temperature control switch 1435 will first send a low-level first signal. The main control circuit 1439 can use the first signal to control the power supply circuit 1438 to stop supplying power, ensuring the safe use of the heating module 143 and reminding the user to maintain the heating module 143. In some operating conditions, if the main control circuit 1439 malfunctions, the heating module 143 may continue to work. 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 supply circuit 1438. In this case, the first temperature control switch 1434 will directly disconnect the power supply circuit 1438 to ensure a smooth power-off. Based on this, a double-insurance control for abnormal states of the heating module 143 is achieved.

[0079] 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 to say, the third temperature control switch 1437 can be connected to the power supply circuit 1438, or to the main control circuit 1439, or to both the power supply circuit 1438 and the main control circuit 1439 at the same time, as long as it can disconnect the power to the heating module 143.

[0080] like Figure 2 and Figure 3 As shown, in one feasible embodiment, the heating tube 1431 includes: a tube body 14311, a heating element 14316 including heating lines plated on the tube body 14311; a flow guide tube 14312 disposed inside the tube body 14311, with a flow gap formed between the flow guide tube 14312 and the inner wall of the tube body 14311; and a sealing member 14313 disposed at both ends of the tube body 14311.

[0081] In this technical solution, the structural composition of the heating tube 1431 is further provided. The heating tube 1431 may include a tube body 14311, a guide tube 14312, and a sealing element 14313. Based on this, after the liquid is supplied into the heating tube 1431, it flows along the flow gap between the guide tube 14312 and the tube body 14311 under the guidance of the guide tube 14312. This makes the liquid contact the heating tube 1431 more tightly, thereby improving heating efficiency. The sealing element 14313 seals the heating tube 1431, reducing the probability of liquid overflow.

[0082] In this technical solution, the heating element 14316 may include heating circuits plated on the tube body 14311. The heating circuits can be formed by solder joints 14317 and power circuits 1438 connected to solder joints 14317 to power the heating circuits. The heating circuits have a certain resistance value, and when current flows through the heating circuits, the tube body 14311 can be heated.

[0083] like Figures 2 to 4 As shown, in one feasible embodiment, the heating tube 1431 further includes: an input port 14314, which is connected to one end of the tube body 14311 for inputting liquid, the liquid flowing through the tube body 14311 through a flow gap; and an output port 14315, which is connected to one end of the tube body 14311 for outputting the heated liquid; wherein, a second temperature sensing element 1432 is connected to the input port 14314, and a third temperature sensing element 1433 is connected to the output port 14315.

[0084] In this technical solution, the structure of the heating tube 1431 is further provided. The heating tube 1431 may also include an input port 14314 and an output port 14315. This arrangement facilitates the supply of external water to the heating module 143 and 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. This allows the second and third temperature measuring elements 1432 and 1433 to be relatively far away from the heating element 14316, ensuring that the detection results of the second and third temperature measuring elements 1432 and 1433 are more accurate and more accurately represent the temperature of the liquid.

[0085] like Figures 1 to 10 As shown, a fish tank is provided according to a second aspect of the embodiments of this application, including: a tank body 110; a cabinet 120, the tank body 110 being disposed on the cabinet 120; and a water inlet assembly 140, the water inlet assembly 140 including a heating module 143 as described in any of the above technical solutions and an external water pipe 142, the external water pipe 142 being connected to the heating module 143, and the output end of the heating module 143 being connected to the tank body 110.

[0086] The fish tank provided in this application embodiment includes all the beneficial effects of the heating module 143 of any of the above-mentioned technical solutions. Therefore, the fish tank has all the beneficial effects of the heating module 143 of the above-mentioned technical solutions, which will not be elaborated here.

[0087] In some embodiments, the heating element 14316 is a heating tube 1431, and the instant heating module 143 is vertically placed inside the cylinder 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, a first temperature control switch 1434 and a second temperature control switch 1435, are respectively provided at the upper and lower ends. The first temperature control switch 1434 is connected in series in the power supply circuit 1438, and the second temperature control switch 1435 is connected in series with the communication line of the main controller. Since the wall temperature of the heating tube 1431 is much higher than the water temperature during heating, the models of the first temperature control switch 1434 and the second temperature control switch 1435 can be selected according to target temperatures such as 120℃ or 100℃. This embodiment does not impose specific limitations.

[0088] like Figure 9 As shown, in one feasible embodiment, the water inlet assembly 140 further includes a filter unit 141, which is disposed between the external water pipe 142 and the heating module 143.

[0089] In this technical solution, the fish tank also includes a water inlet assembly 140, which includes a filter unit 141, an external water pipe 142, and a heating module 143. During use, the external water pipe 142 can be connected to the user's tap water pipe. When the fish tank needs water replenishment or replacement, the water inlet assembly 140 can be turned on. After the external water passes through the filter unit 141 to remove particulate matter and residual chlorine, it can be transported to the delivery unit. The delivery unit then transports the replenished liquid to the heating module 143, which heats the water. Once the water temperature reaches the fish's feeding standard, it can be supplied to the tank body 110. Therefore, the fish tank provided in this embodiment allows for water circulation and purification during normal use. When water needs replenishment or replacement, it can be directly replenished through the water inlet assembly 140, providing water that meets the fish's feeding needs. This makes the fish tank more convenient to use, highly automated, and requires less maintenance.

[0090] like Figure 9 As shown, in one feasible embodiment, the fish tank further includes a descaling liquid container, which is disposed inside the cabinet 120 and connected to the heating module 143.

[0091] In this technical solution, the fish tank may also include a descaling liquid container, which can be used to store solvents for removing scale. The heating module 143 can detect abnormal states of the heating module 143 through the setting of the first temperature control switch 1434 and the second temperature control switch 1435. When the heating module 143 stops working due to the first temperature control switch 1434 or the second temperature control switch 1435, it may be because a lot of scale has been deposited inside the heating tube 1431. In this case, the descaling liquid container can be controlled to supply solvent, such as citric acid, to the heating tube 1431 to remove the scale on the inner wall of the heating tube 1431 and ensure the heating efficiency of the heating tube 1431.

[0092] In one feasible embodiment, the filter unit 141 includes: a first filter unit 1411, with an external water pipe 142 connected to the first filter unit 1411; and a second filter unit 1412, with the output end of the first filter unit 1411 connected to the second filter unit 1412, and the output end of the second filter unit 1412 connected to the cylinder body 110; wherein, the first filter unit 1411 includes a first filter housing and a particulate filter element disposed within the first housing 1436; wherein, the second filter unit 1412 includes a second filter housing and an activated carbon filter element disposed within the second housing 1436.

[0093] In this technical solution, the structure 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 tank 110 from the outside, the water can first pass through the first filter unit 1411 to remove particulate matter and impurities, and then the water passes through the second filter unit 1412 to remove harmful substances in the water, especially residual chlorine. After that, the water can be transported to the transport unit, which can then supply the externally added liquid into the tank 110. Based on this, the fish tank provided by the embodiment of this application does not require the user to fill water or expose it to sunlight, making the use of the fish tank more convenient.

[0094] like Figure 11 As shown, in some examples, where the fish tank provided in the embodiments of this application includes a main controller, the main controller can execute a computer program to implement the following control method:

[0095] Step 101: When the heating module installed in the cylinder is heating, obtain the on / off status of the temperature control switch installed in the heating module.

[0096] The tank 110 is the area in the aquarium where water is held. A heating module 143 is installed inside the tank 110; this can be an instant heating module 143. This instant heating module 143 contains heating elements 14316, including but not limited to graphene heating elements, thick-film resistance wire heating elements, and flange heating elements, which are attached to the stainless steel annular outer wall to form a tubular structure. The heating elements 14316 instantly generate a large amount of Joule heat by applying high-power alternating current, thus heating the water flowing through the stainless steel tube. Simultaneously, the heating module 143 is equipped with a temperature control switch. The main controller, acting as the current actuator, determines the detection results of the heating module 143 by acquiring the switch status.

[0097] In this embodiment, the temperature control switch includes a first temperature control switch 1434 disposed at one end of the heating module 143 and a second temperature control switch 1435 disposed at the other end of the heating module 143. Meanwhile, since the cylinder 110 is provided with a cold water inlet for conveying cold water and a hot water outlet for conveying hot water to the cylinder 110 after heating, one end of the instant heater is disposed at the cold water inlet of the cylinder 110 and the other end of the instant heater is disposed at the hot water outlet of the cylinder 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.

[0098] In a specific implementation, the first temperature control switch 1434 and the second temperature control switch 1435 are components that include 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 control switch, the metal sheet inside the temperature control switch deforms, causing the communication to be disconnected and the switch to open. Otherwise, when the heating element 14316 has not reached the operating temperature of the temperature control switch, the temperature control switch remains closed.

[0099] Step 102: When the first switch state of the first temperature control switch is circuit disconnected, or the second switch state of the second temperature control switch is communication disconnected, determine that the status detection result is abnormal heating state, and output the status detection result.

[0100] In this embodiment, since the heating module 143 includes a heating element 14316, the sensing surfaces of the first temperature control switch 1434 and the second temperature control switch 1435 are in contact with the heating element 14316. At this time, if... Figure 2 As shown, the terminals of the first temperature control switch 1434 are connected to the power supply circuit, and the terminals of the second temperature control switch 1435 are connected to the main control circuit. The first temperature control switch 1434 or the second temperature control switch 1435 can close or open according to the heating temperature of the heating element 14316, thereby connecting or disconnecting the main control circuit or the power supply circuit. The power supply circuit can be composed of a controllable AC power supply, and the main control circuit can be composed of the main controller or main control chip of the current executing entity. Furthermore, the main controller, as the current executing entity, can determine the instantaneous state detection result of the heating component based on the first switch state and / or the second switch state, and output the result. The switch state can represent the open or closed state of the temperature control switch. Since the temperature control switch is connected to the circuit, it can be identified by whether an electrical signal can be received; this embodiment does not specifically limit this. Specifically, when the first switch state of the first temperature control switch 1434 is "circuit open," 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, reaching the operating temperature, causing the switch to open. This confirms an abnormal heating state, and the state detection result is output. This abnormal heating state can be caused by scale buildup. For example, since the heating element 14316 in the instant heating assembly preferably uses a heating tube formed from a metal resistance wire, when there is no scale inside the heating tube, it can heat to the required temperature of the aquarium in a short time. However, when scale should be present inside the heating tube and it is in an abnormal heating state, the scale will affect the heating efficiency. Therefore, the operating temperatures of the first temperature control switch 1434 and the second temperature control switch 1435 can be adjusted to a temperature suitable for heating when scale is present, such as 200°C. This embodiment does not impose specific limitations.

[0101] In some embodiments, the heating element 14316 is a heating tube, and the instantaneous heater is vertically placed inside the cylinder 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, a first temperature control switch 1434 and a second temperature control switch 1435, are respectively provided at the upper and lower ends. The first temperature control switch 1434 is connected in series in the power supply circuit, and the second temperature control switch 1435 is connected in series with the communication line of the main controller. Since the wall temperature of the heating tube is much higher than the temperature of the water being heated 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 operating temperatures such as 120℃ and 100℃. This application embodiment does not impose specific limitations.

[0102] In some embodiments, since the second temperature control switch 1435 is located at the hot water outlet, when the second switch state of the second temperature control switch 1435 is based on the communication line of the main controller being disconnected, it indicates that the communication is disconnected. That is, the temperature of the heating element 14316 detected by the second temperature control switch 1435 has reached the operating temperature of the temperature control switch. Therefore, the switch is disconnected, and the main controller of the current execution subject can determine the current state detection result as being in an abnormal heating state, and effective heating control cannot be achieved.

[0103] In some embodiments, since 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 usually lower than the temperature at the second temperature control switch 1435. In this case, during heating, the temperature at the second temperature control switch 1435 will reach its operating temperature first. Therefore, the main controller will first detect that the second temperature control switch 1435 has triggered a communication disconnection, i.e., it is in a second switch state with communication disconnection. The main controller generates a stop heating command to cut off power to the heating module 143. However, in some cases, when the second temperature control switch 1435 is in an abnormal condition, it 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., it is in a first switch state with circuit disconnection, causing the power supply to stop supplying power to the heating module 143, forming a secondary overheat protection to determine that it is in an abnormal heating state.

[0104] In another embodiment of this application, for further definition and explanation, the step of determining the state detection result based on the first switch state and / or the second switch state includes:

[0105] When the first switch is in the circuit connected state and the second switch is in the communication connected state, the state detection result is determined to be in the normal heating state, and the first real-time temperature, the second real-time temperature and the third real-time temperature are acquired, so as to perform temperature control based on the first real-time temperature, the second real-time temperature and the third real-time temperature.

[0106] To achieve temperature control protection of the water temperature inside the cylinder, when the first temperature control switch 1434 and the second temperature control switch 1435 are of the same model, their settings are different. The first temperature control switch 1434 is connected in series in the power supply circuit, and its first switch state is determined based on the power-on state of the main control circuit. The second temperature control switch 1435 is connected in series with the communication line of the main controller, and its second switch state is determined based on the collected electrical signal results.

[0107] 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 acquired for temperature control. The first real-time temperature is the target temperature inside 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; these are not specifically limited in this embodiment. When the acquired second real-time temperature is lower than the target heating temperature, it indicates that the main controller can continuously heat the cylinder through temperature control to ensure the target temperature is reached. In this case, temperature control can be performed based on the first, second, and third real-time temperatures.

[0108] In another embodiment of this application, for further definition and explanation, the steps also include:

[0109] Obtain the third switch status of the third temperature control switch 1437;

[0110] When the third switch is in the state of circuit disconnection, the state detection result is determined to be dry burning state.

[0111] To prevent dry burning in the cylinder 110 without water 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 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 installed on the heating tube in the same way as the first temperature control switch 1434 and the second temperature control switch 1435. At the same time, the target switching temperature of the third temperature control switch 1437 is higher than the target switching temperatures of the first temperature control switch 1434 and the second temperature control switch 1435.

[0112] In some embodiments, the main controller acquires the third switching state of the third temperature control switch 1437 during the heating process. In special cases, if the first temperature control switch 1434 and the second temperature control switch 1435 are malfunctioning, and the heating module 143 continues heating, when the third switching state of the third temperature control switch 1437 detects a circuit open, it indicates that the temperature of the heating element 14316 is too high, potentially leading to dry burning. The third temperature control switch 1437 triggers the circuit to open after reaching its operating temperature, thus determining the state detection result as dry burning. Furthermore, since the third temperature control switch 1437 is connected in series with the power supply circuit, the power supply circuit is disconnected, and the heating module 143 is also de-energized, achieving the purpose of stopping heating.

[0113] In another embodiment of this application, for further definition and explanation, before obtaining the on / off state of the temperature control switch set in the heating module 143, the method further includes:

[0114] In response to a heating command, a pulse width modulation signal with an adjustable duty cycle and constant frequency is generated based on a first real-time temperature, a second real-time temperature, and a third real-time temperature.

[0115] 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 heat up.

[0116] To achieve precise heating control of the new water temperature and the target water temperature during aquarium water changes, the main controller, acting as the primary actuator, acquires the first, second, and third real-time temperatures, all of which can be measured using temperature sensing elements. Since the heating element in the heating module 143 is equivalent to a high-power resistor, under a 50Hz AC power supply, 100 sinusoidal half-waves per second are applied to the heating element 14316 to generate heating power. Therefore, the main controller generates a pulse width modulation (PWM) signal with a constant frequency and adjustable duty cycle based on the first, second, and third real-time temperatures. This PWM signal opens the gate during the high-level period, allowing the sinusoidal AC power to be applied to the heating module 143 through the control circuit. During the low-level period, the PWM signal closes the gate, preventing AC power from being applied to the heating module 143. In addition, the main control circuit, which includes the main controller, may also include a zero-crossing detection component to ensure that the gate switch only operates 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, which would generate high-intensity conducted noise and radiated noise and interfere with the power quality of the mains network or equipment.

[0117] In some embodiments, to achieve precise temperature control, the period and duty cycle of the PWM signal must be precisely matched to the period of the sinusoidal alternating current, and the timing of the zero-crossing detection component's on / off state must be precisely controllable. Specifically, such as... Figure 3 As shown, when generating the PWM signal, the minimum high-level duration is preferably 10ms (one half-wave period of a sine AC wave), and it is increased in integer multiples of 10ms. This ensures that an expected integer number of complete sine half-waves pass through the load each time the zero-crossing detection component is turned on, thereby making the power value accurately controllable and the heating effect stable.

[0118] In some embodiments, to achieve both fine power control (number of power levels n, i.e., 1 to n times 10ms) and real-time power adjustment (PWM frequency, i.e., the number of power adjustments per unit time), a higher PWM frequency results in more sensitive power adjustment but fewer power levels; conversely, a lower PWM frequency results in more precise power levels but poorer real-time power adjustment. Therefore, it is preferable that the PWM signal is set to 4Hz (25 power levels) or 5Hz (20 power levels), though this application does not impose specific limitations. Furthermore, to synchronize the phase difference between the PWM signal and the AC power, the PWM signal is preferably configured such that the high-level duration is equal to the AC half-wave time of 10ms, or an integer multiple of 10ms n, to ensure that there are only one or n zero-crossing points every 10ms. Simultaneously, within each PWM signal cycle, a minimum half-wave power is achieved, so that by controlling the PWM duty cycle to be n times 10ms, n times the half-wave power within a single cycle is realized. Controlling the power level is equivalent to controlling the value of n. For example, with a PWM frequency of 4Hz and a cycle of 250ms, n = 250 / 10 = 25 power levels. This means the power can be adjusted 4 times per second, with the power value 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, resulting in AC half-wave number misalignment and fluctuations in output power.

[0119] It should be noted that after the main controller generates PWM signals based on the first, second, and third real-time temperatures, as follows: Figure 4 In the main control circuit shown, the PWM signal opens the gate during its high-level period, allowing the sinusoidal AC current to be normally applied to the heating module 143 through the control circuit. During the low-level period, the gate closes, preventing AC current from being applied to the heating module 143. Simultaneously, to prevent the gate from opening or closing at the high amplitude of the sinusoidal AC current, a zero-crossing detection component is included in the main control circuit. The PWM signal is sent to the zero-crossing detection circuit to ensure that the gate switch only operates at the zero-crossing point of the sinusoidal AC current, controlling the heating element 14316 of the heating module 143 to heat.

[0120] In addition, to achieve intelligent and precise temperature control, the temperature sensing component installed inside the cylinder 110 may include three temperature sensing elements, respectively positioned in the water within the cylinder 110 and at the cold water inlet and hot water outlet, to collect real-time temperature data in order to determine the PWM signal based on a PID algorithm. The temperature sensing elements can be NTC temperature sensors, and the PID algorithm can be set based on temperature control requirements; this application embodiment does not impose specific limitations.

[0121] In some embodiments, when the second real-time temperature is lower than the in-cylinder temperature (the collected first real-time temperature), the main controller activates the heating function of the heating module 143. The real-time temperature difference between the first and second real-time temperatures is used as an input parameter for a PID algorithm, and the heated third real-time temperature is used as an input parameter for another PID algorithm. Simultaneously, the main control circuit adjusts the AC power of the heating element in real-time using the output PWM signal determined by the PID algorithm, enabling the third real-time temperature to quickly and accurately track the target water temperature, achieving real-time isothermal heating and ensuring an isothermal output accuracy within ±1℃.

[0122] In some embodiments, when the first switch state is circuit connected and the second switch state is communication connected, the instantaneous heating module 143 can be continuously heated based on the PWM signal control. This application embodiment does not make specific limitations.

[0123] In another embodiment of this application, for further definition and explanation, the steps also include:

[0124] When the third real-time temperature exceeds the preset temperature threshold, a stop heating control command is generated.

[0125] To prevent the added hot water from causing the aquarium water temperature to become too high and thus malfunctioning the temperature control, the main controller collects the third real-time temperature through a temperature sensing element located at the hot water outlet and compares it with a preset temperature threshold that indicates the maximum heating temperature inside the tank 110. When the third real-time temperature exceeds the preset temperature threshold, it indicates that the water temperature is too high, and the main controller generates a stop heating control command to cut off the power to the power circuit.

[0126] This application provides a method for detecting the state of a heating module 143, a water temperature control system, and a fish tank. This embodiment obtains the on / off state of a temperature control switch installed in the heating module 143 when the heating module 143, located within the tank body 110, is heating. The temperature control switch includes a first temperature control switch 1434 located at one end of the heating module 143 and a second temperature control switch 1435 located at the other end of the heating module 143. One end of the second temperature control switch is located at the cold water inlet of the tank body 110, and the other end is located at the heat outlet 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 flows out from the hot water outlet. 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, the status detection result is determined to be an abnormal heating state, and the status detection result is output. This achieves the purpose of detecting the heating status of the heating module 143 during the heating process, confirming the heating status without human monitoring, avoiding excessively high water temperature or ineffective heating, thereby improving the effectiveness of water temperature control.

[0127] In some examples, the system temperature measurement components include a first temperature measuring element, a second temperature measuring element 1432, and a third temperature measuring element 1433. The first temperature measuring element 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.

[0128] In this utility model, 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 "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0129] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0130] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above 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 one or more embodiments or examples.

[0131] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heating module, characterized in that, include: Heating element; A second temperature sensing element and a third temperature sensing element are used to detect the temperature of the liquid flowing through the heating tube. The second temperature sensing element is disposed at the input end of the heating tube, and the third temperature sensing element is disposed at the output end of the heating tube. A first temperature control switch and a second temperature control switch are both connected to the heating element of the heating tube. The first temperature control switch is located at the input end of the heating tube, and the second temperature control switch is located at the output end of the heating tube.

2. The heating module according to claim 1, characterized in that, Also includes: The housing, wherein the heating element is disposed within the housing; The first temperature control switch and the second temperature control switch are both connected to the housing and pass through the housing to the heating element of the heating tube.

3. The heating module according to claim 1, characterized in that, Also includes: A third temperature control switch is connected to the heating element of the heating tube and is arranged between the first temperature control switch and the second temperature control switch.

4. The heating module according to claim 3, characterized in that, The breaking temperature of the third temperature control switch is greater than that of the first temperature control switch and greater than that of the second temperature control switch.

5. The heating module according to claim 3, characterized in that, Also includes: The circuit includes a power supply circuit and a main control circuit. The second temperature control switch is connected to the main control circuit, the first temperature control switch is connected to the power supply circuit, and the third temperature control switch is connected to the power supply circuit and / or the main control circuit. The main control circuit is connected to the power supply circuit. Specifically, when the second temperature control switch reaches the first temperature threshold, a first signal is sent to the main control circuit to disconnect the power supply circuit; when the first temperature control switch reaches the first temperature threshold, the power supply circuit is controlled to disconnect.

6. The heating module according to any one of claims 1 to 5, characterized in that, The heating element includes: The tube body, wherein the heating element includes heating circuitry, the heating circuitry being plated onto the tube body; A flow guide tube is disposed within the tube body, and a flow gap is formed between the flow guide tube and the inner wall of the tube body; A sealing element is disposed at both ends of the tube body.

7. The heating module according to claim 6, characterized in that, The heating element also includes: An input port is connected to one end of the tube body for inputting liquid, which flows through the tube body via a flow gap; An output port, connected to one end of the tube, is used to output the heated liquid; The second temperature sensing element is connected to the input port, and the third temperature sensing element is connected to the output port.

8. A fish tank, characterized in that, include: Cylinder block; The cabinet, wherein the cylinder is mounted on the cabinet; The heating module as described in any one of claims 1 to 7; A water inlet assembly, comprising a heating module as described in any one of claims 1 to 7 and an external water pipe, wherein the external water pipe is connected to the heating module and the output end of the heating module is connected to the cylinder body.

9. The fish tank according to claim 8, characterized in that, The water inlet assembly also includes: A filtration unit is disposed between the external water pipe and the heating module; and / or A descaling solution container is disposed inside the cabinet and connected to the heating module.

10. The fish tank according to claim 9, characterized in that, The filtering unit includes: The first filtration unit is connected to the external water pipe. The second filter unit is connected to the output of the first filter unit, and the output of the second filter unit is connected to the cylinder body; The first filtration unit includes a first housing and a particulate filter element disposed within the first housing; The second filtration unit includes a second housing and an activated carbon filter element disposed within the second housing.

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