A water replenishment device and humidifier

Abstract

The embodiment of the present application provides a water supplement device and a humidifier. The water supplement device has a water inlet for being connected with a water supply system, a water supply port for being connected with a water inlet pipe in a humidifying device, and a signal input end for being connected with a control end of at least one humidifier body in the humidifying device. The water supplement device comprises a control circuit and a water inlet control assembly. The control circuit outputs a water supplement instruction under the joint control of a water request from the at least one humidifier body and a water inlet instruction. The water inlet instruction is controlled by a comparison result between a characteristic parameter of water from the water supply system and a preset characteristic range. The water inlet control assembly comprising a water inlet valve is configured to control the water inlet valve to be opened in response to the water supplement instruction, so that water flowing into the water inlet is transported to the water supply port to supplement water to each humidifier body connected with the water inlet pipe through the water inlet pipe. The present application realizes automatic water supplement of the humidifying device and improves the reliability of water supplement.

Description

Technical Field

[0001] This application relates to the field of humidifier technology, and more specifically, to a water replenishment device and a humidifier. Background Technology

[0002] A humidifier is an appliance used to increase the humidity of the air. When the indoor air is dry, a humidifier can process water into water vapor and send the water vapor into the air to increase the indoor humidity. During use, the water in the humidifier's tank is continuously atomized, so the water tank needs to be replenished. However, the water replenishment function of currently available centralized humidifiers is relatively simple, requiring manual replenishment and lacking automatic replenishment capabilities. This can lead to malfunctions such as dry burning, affecting the product's lifespan. Summary of the Invention

[0003] This application provides a water replenishment device and a humidifier to solve the technical problem that centralized humidifiers have a limited water replenishment function, which prevents them from automatically replenishing water.

[0004] According to one aspect of the embodiments of this application, a water replenishment device is provided.

[0005] The water replenishment device has an inlet for connecting to a water supply system, an outlet for connecting to an inlet pipe in a humidifier, and a signal input terminal for connecting to a control terminal of at least one humidifier body in the humidifier.

[0006] The water replenishment device includes a control circuit and a water inlet control component; the water inlet control component is connected between the water inlet and the water supply outlet, the controlled terminal of the control circuit is connected to the signal input terminal and the signal detection terminal of the water inlet control component, and the control terminal of the control circuit is connected to the controlled terminal of the water inlet control component.

[0007] The control circuit is configured to output a water replenishment command under the joint control of a water request and a water inlet command from at least one of the humidifier bodies. The water inlet command is controlled by a comparison result sent by the water inlet control component between characteristic parameters of water originating from the water supply system and a preset characteristic range.

[0008] The water inlet control assembly, including the water inlet valve, is configured to control the opening of the water inlet valve in response to the water replenishment command, so that water flowing into the water inlet is delivered to the water supply port to replenish water to each of the humidifier bodies connected to the water inlet pipe via the water inlet pipe.

[0009] In some embodiments, the water inlet control component includes: a detection component and a filtration component;

[0010] The detection component is connected to the water inlet, and the output end of the detection component is connected to the signal detection end of the water inlet control component; the filter component is connected between the detection component and the input port of the water inlet valve, and the controlled end of the detection component, the controlled end of the filter component, and the controlled end of the water inlet valve are all connected to the controlled end of the water inlet control component;

[0011] The detection component is configured to collect and output characteristic parameters of the water flowing into the inlet, including water flow rate parameters, water temperature parameters, and water quality parameters.

[0012] The control circuit is configured to generate a water inlet command when any of the aforementioned characteristic parameters are detected to be within the preset characteristic range; or, when any of the aforementioned characteristic parameters are detected to be outside the preset characteristic range, output a corresponding alarm and a data acquisition command to instruct the detection component to re-acquire the characteristic parameters until all acquired characteristic parameters are detected to be within the preset characteristic range.

[0013] The filter assembly is configured to filter the incoming water in response to the water inlet command sent by the control circuit, so that the filtered water flows into the humidifier through the water inlet valve.

[0014] In some embodiments, the water replenishment device further has a return water inlet for connection to a return water pipe that is connected to the end of the inlet pipe in the humidification device;

[0015] The water replenishment device also includes a water return component, which includes a delivery pipe and a pressure sensor disposed on the delivery pipe. The delivery pipe connects the water return port and the water inlet, so that water from the water return port flows into the water inlet through the delivery pipe.

[0016] The pressure sensor, with its control terminal connected to the controlled terminal of the control circuit, is configured to send the return water pressure of the delivery pipe to the control circuit. When the control circuit detects that the return water pressure is within a preset return water pressure range, it generates a detection command that acts on the detection component. The detection command is used to instruct the start of collecting the characteristic parameters.

[0017] In some embodiments, the water inlet control component 12 further includes:

[0018] Pressure valve 125, the pressure valve is connected between the output port of the water inlet valve and the water supply port, and the output end of the pressure valve is connected to the signal detection end of the water inlet control component;

[0019] The pressure valve is configured to send pipeline pressure at the end of the water inlet control component to the control circuit, such that when the control circuit detects that the pipeline pressure is lower than a preset end pressure threshold, it generates a valve control command to instruct the water inlet valve to be closed.

[0020] In some embodiments, the water inlet control assembly 12 further includes: a pressure regulating valve 124;

[0021] The pressure regulating valve is connected between the output port of the inlet valve and the water supply port. The controlled end of the pressure regulating valve is connected to the control end of the control circuit, so that the pressure regulating valve responds to the water supply pressure control command sent by the control circuit and performs corresponding pressure regulation. The water supply pressure control command is generated by the control circuit based on the configured number of humidifier bodies and then sent.

[0022] In some embodiments, the water inlet control assembly further includes: a normally open solenoid valve;

[0023] The normally open solenoid valve is connected between the water supply system and other water-using equipment except for the water replenishment device; the controlled end of the normally open solenoid valve is connected to the control end of the control circuit, so that when the control circuit detects that the water pressure of the water replenishment device is lower than the preset water pressure threshold, it outputs a water inlet control command. The water inlet control command is used to control the closing of the normally open solenoid valve to stop the water supply system from supplying water to other water-using equipment.

[0024] In some embodiments, the water return assembly further includes: a normally closed solenoid valve installed on the delivery pipe;

[0025] The controlled end of the normally closed solenoid valve is connected to the control end of the control circuit. The normally closed solenoid valve is configured to be controlled by the return water control command sent by the control circuit. The normally closed solenoid valve is opened to discharge water from the delivery pipe. The return water control command is sent by the control circuit in response to the shutdown command.

[0026] In some embodiments, the control circuit includes:

[0027] microprocessor;

[0028] A water quality detection circuit includes a voltage generating circuit, a current rectifying circuit, and a low-pass filter circuit. The voltage generating circuit is connected to the detection component to apply an AC voltage of a specified frequency to the detection component, so that when the detection component senses water flowing into the inlet, it outputs a corresponding current reduction value. The current rectifying circuit and the low-pass filter circuit are connected between the current detection terminal of the detection component and the signal input terminal of the microprocessor to rectify and low-pass filter the current reduction value to obtain a voltage signal that is proportional to the current reduction value. The signal output terminal of the microprocessor is connected to the signal input terminal of the detection component, so that the microprocessor obtains water quality parameters through conversion processing and returns them to the detection component.

[0029] And / or, a temperature measurement circuit, wherein the input of the temperature measurement circuit is connected to the output of the thermistor component in the detection component for sensing the temperature of the water flowing into the inlet, and the output of the temperature measurement circuit is connected to the signal input of the detection component; the temperature measurement circuit is configured to convert the resistance value from the detection component into a water temperature parameter and return it to the detection component.

[0030] In some embodiments, the water replenishment device further includes: a drive circuit; the drive circuit is connected between the control terminal of the control circuit and the controlled terminal of the water inlet control component, and is configured to generate a corresponding drive signal under the control of the control circuit, the drive signal being used to indicate the operation of the water inlet control component.

[0031] According to another aspect of the embodiments of this application, a humidifier is provided, characterized in that it includes: a water replenishment device and a humidification device as described in the above embodiments; the humidification device includes a water inlet pipe and at least one humidifier body connected to the water inlet pipe; the water inlet of the water replenishment device is connected to a water supply system, the water supply port of the water replenishment device is connected to the water inlet pipe, and the signal input terminal of the water replenishment device is connected to the control terminal of each of the humidifier bodies.

[0032] The beneficial effects of the technical solutions provided in this application are:

[0033] This application provides a water replenishment device and a humidifier. The water replenishment device has an inlet for connection to a water supply system, a supply inlet for connection to a water inlet pipe in the humidifier, and a signal input terminal for connection to a control terminal of at least one humidifier body in the humidifier. The water replenishment device includes a control circuit and a water inlet control component. The water inlet control component is connected between the inlet and the supply inlet. The controlled terminal of the control circuit is connected to the signal input terminal and the signal detection terminal of the water inlet control component. The control terminal of the control circuit is connected to the controlled terminal of the water inlet control component. The control circuit is configured to output a water replenishment command under the joint control of a water demand and a water inlet command from at least one of the humidifier bodies. The water inlet command is controlled by the... The water inlet control component sends a comparison result between the characteristic parameters of the water originating from the water supply system and a preset characteristic range. The water inlet control component, including the water inlet valve, is configured to control the opening of the water inlet valve in response to the water replenishment command, so that the water flowing into the water inlet is delivered to the water supply outlet, and then replenished to each of the humidifier bodies connected to the water inlet pipe via the water inlet pipe. In this way, by jointly controlling the characteristic parameters of the water flowing into the water replenishment device and the water usage of the humidifier, automatic water replenishment of the humidifier is achieved, which solves the technical problem that the water replenishment function of centralized humidifiers is relatively simple and therefore cannot achieve automatic water replenishment. At the same time, by matching the characteristic parameters, a clean and stable water source is guaranteed for the humidifier, thereby improving the safety of the humidifier and the reliability of automatic water replenishment. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below.

[0035] Figure 1 This is a schematic diagram of the structure of a water replenishment device provided in an embodiment of this application;

[0036] Figure 2 A schematic diagram of the structure of a water replenishment device provided in an exemplary embodiment of this application;

[0037] Figure 3 A schematic diagram of the structure of a water quality detection circuit provided in an exemplary embodiment of this application;

[0038] Figure 4 A schematic diagram of the control circuit provided in an exemplary embodiment of this application;

[0039] Figure 5 This is a schematic diagram of the structure of a driving circuit provided for an exemplary embodiment of this application. Detailed Implementation

[0040] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0041] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the terms “comprising” and “including” as used in embodiments of this application mean that the corresponding feature can be implemented as the presented feature, information, data, step, operation, element, and / or component, but do not exclude implementation as other features, information, data, step, operation, element, component, and / or combinations thereof supported by the art. It should be understood that when we say that an element is “connected” or “coupled” to another element, the one element can be directly connected or coupled to the other element, or it can mean that the one element and the other element establish a connection relationship through an intermediate element. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein indicates at least one of the items defined by the term; for example, “A and / or B” can be implemented as “A,” or as “B,” or as “A and B.”

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0043] Example 1

[0044] See Figure 1 This is a schematic diagram of a water replenishment device provided in an embodiment of the present application. The water replenishment device 1 has an inlet 11 for connecting to a water supply system 3, a water supply 13 for connecting to an inlet pipe 21 in a humidification device 2, and a signal input terminal for connecting to a control terminal of at least one humidifier body 22 in the humidification device 2.

[0045] The water replenishment device 1 includes a control circuit 14 and a water inlet control component 12; the water inlet control component 12 is connected between the water inlet 11 and the water supply outlet 13, the controlled terminal of the control circuit 14 is connected to the signal input terminal and the signal detection terminal of the water inlet control component 12, and the control terminal of the control circuit 14 is connected to the controlled terminal of the water inlet control component 12.

[0046] The control circuit 14 is configured to output a water replenishment command under the joint control of a water request and a water inlet command from at least one of the humidifier bodies 22. The water inlet command is controlled by a comparison result between the characteristic parameters of the water originating from the water supply system 3 and a preset characteristic range sent by the water inlet control component 12.

[0047] The water inlet control assembly 12, which includes the water inlet valve 121, is configured to control the opening of the water inlet valve 121 in response to the water replenishment command, so that water flowing into the water inlet 1 is delivered to the water supply port 13, so as to replenish water to each of the humidifier bodies 22 connected to the water inlet pipe 21 via the water inlet pipe 21.

[0048] In this application, the humidification device includes a water inlet pipe and at least one humidifier body connected to the water inlet pipe. Water is supplied to each humidifier body connected to the water inlet pipe, achieving automatic water replenishment for the centralized humidifier. The water replenishment device includes a water inlet control component and a control circuit. The water replenishment device is used to connect to a water supply system to introduce water. Under the control of the control circuit and the humidifier bodies, water is delivered to the humidification device, thus supplying water to the humidifier bodies. Specifically, the water replenishment device connects to the water supply system through a water inlet, allowing water flowing into the inlet to enter the water inlet pipe of the humidification device to supply water to the humidifier bodies. Specifically, the control circuit can be an electronic circuit, integrated chip, or electronic device with functions such as receiving signals, controlling, and transmitting / forwarding signals. The water inlet control component can be a combination of devices with functions such as detecting characteristic parameters of the water flowing into the water inlet and controlling the flow direction of the water in response to command signals from the control circuit.

[0049] More specifically, the characteristic parameters include water flow rate parameters, water temperature parameters, and water quality parameters (such as TDS water quality parameters), but are not limited to these. After receiving the characteristic parameters sent by the water inlet control component, the control circuit detects whether the received characteristic parameters are within a preset characteristic range. For example, regarding the water flow rate parameter, the water inlet control component collects the water flow rate parameter flowing into the inlet, enabling the control circuit to determine whether the water flow rate parameter is within the preset water flow rate range. Therefore, by considering the water flow rate parameter, this application avoids the situation where slow water filling speed and low water pressure caused by insufficient water flow rate seriously affect the humidification efficiency of the humidifier, thus improving water replenishment efficiency and humidification efficiency. Regarding the water temperature parameter, the water inlet control component collects the water temperature parameter of the water flowing into the inlet, enabling the control circuit to determine whether the water temperature parameter is within the preset temperature range. Therefore, by considering the water temperature parameter, this application avoids the situation where excessively high water temperature damages the humidifier (such as damage to the water tank, short circuit in the internal wiring of the humidifier, etc.), greatly improving the service life of the humidifier. Regarding water quality parameters, the water inlet control component collects the water quality parameters of the water flowing into the inlet, enabling the control circuit to determine whether these parameters are within the preset water quality range. Therefore, by considering water quality parameters, this application avoids the air pollution caused by water with high TDS (total dissolved solids) containing more minerals and ions, which could negatively impact the human respiratory system. It also reduces the possibility of scale buildup and limescale accumulation inside the humidifier due to high TDS, thereby improving the humidifier's lifespan and performance. Subsequently, when the control circuit detects that the water flow rate, water temperature, and water quality parameters are all within the preset characteristic range, it generates a water inlet command. If any one of these parameters is detected to be outside the preset characteristic range, an alarm is issued for that parameter, and a data acquisition command is sent to the detection component. The detection component is then controlled by this acquisition command to re-acquire and output the characteristic parameters until the control circuit detects that all acquired characteristic parameters are within the preset characteristic range before generating a water inlet command. Therefore, this application takes into account whether the characteristic parameters of the incoming water are within a suitable range, and needs to combine the water inlet command to control the opening and closing of the water inlet valve to control the water flow direction, ensuring that a clean water source is provided for the humidifier, improving the service life and working efficiency of the humidifier, and realizing unattended operation.

[0050] Furthermore, the humidifier body employs an automatic water replenishment method. For example, the humidifier body contains a water tank, a controller, a water level sensor, and a water replenishment valve. The water tank stores a certain amount of water, and the water level sensor is located inside the water tank to collect water level signals. The water replenishment valve is located at the water inlet of the water tank and is connected to the water inlet pipe of the humidifier to control the water entering the water tank. The controller, water level sensor, and water replenishment valve are electrically connected in pairs. When the water level signal collected by the water level sensor is lower than a preset water level threshold, the controller triggers a water demand, generates a water request, and outputs it to the control circuit of the water replenishment device. This controls the opening of the water replenishment valve, so that the control circuit controls the conduction of the water inlet control component under the combined action of the water inlet command and the water demand, thereby delivering water from the water supply system to the humidifier and realizing the automated water replenishment operation. Optionally, when the water level signal collected by the water level sensor reaches the preset water volume range, the controller sends a stop water supply command to the control circuit to control the closing of the water inlet valve, thereby disconnecting the pipe of the water inlet control component to stop supplying water to the humidifier and closing the water supply valve, which achieves the effect of energy saving.

[0051] Furthermore, in one optional embodiment, when the control circuit detects a water demand but does not receive a water inlet command (i.e., at least one characteristic parameter is not within a preset characteristic range), the water inlet valve is closed, indicating that the water source provided by the water supply system is poor and may easily damage the humidifier or affect humidification efficiency. Therefore, it waits for the generation of a water inlet command, thus improving the humidifier's humidification efficiency and performance. In another optional embodiment, when the control circuit detects a water inlet command but does not receive a water demand (or receives the aforementioned stop water replenishment command), the water inlet valve is closed, indicating that the humidifier's water tank stores sufficient water, and it waits for the next water demand. Therefore, this application replenishes water to the humidifier under the joint control of the humidifier's water demand and a water inlet command that meets the water source requirements. This takes into account the cleanliness of the humidifier's water source, improving the humidifier's lifespan and operating efficiency, while also responding to the humidifier's actual water demand, achieving energy-saving effects and improving the reliability and efficiency of water replenishment.

[0052] In some embodiments, the water replenishment device further includes: a drive circuit; the drive circuit is connected between the control terminal of the control circuit and the controlled terminal of the water inlet control component, and is configured to generate a corresponding drive signal under the control of the control circuit, the drive signal being used to indicate the operation of the water inlet control component.

[0053] It should be noted that the drive circuit amplifies the output signal of the control circuit to drive devices such as relays to control the starting and stopping of devices in the water inlet control assembly. In other words, it converts the signal from the control circuit into a signal that can control the power electronic devices to turn on or off according to the control objective. In this application, the control circuit provides input signals to the drive circuit; these signals can be electrical, optical, magnetic, etc., to indicate the action of the drive circuit. Therefore, this application achieves effective control of the entire system through the coordinated operation of the drive circuit and the control circuit.

[0054] The water replenishment device provided in this embodiment has an inlet for connecting to a water supply system, a supply inlet for connecting to a water inlet pipe in a humidifier, and a signal input terminal for connecting to a control terminal of at least one humidifier body in the humidifier. The water replenishment device includes a control circuit and a water inlet control component. The water inlet control component connects the inlet and the supply inlet. The controlled terminals of the control circuit are connected to the signal input terminal and the signal detection terminal of the water inlet control component, and the control terminal of the control circuit is connected to the controlled terminal of the water inlet control component. The control circuit is configured to output a water replenishment command under the combined control of a water request from at least one humidifier body and a water inlet command. The water inlet command is controlled by the water inlet control component. The component sends a comparison result between the characteristic parameters of the water originating from the water supply system and a preset characteristic range; the water inlet control component, including the water inlet valve, is configured to control the opening of the water inlet valve in response to the water replenishment command, so that the water flowing into the water inlet is delivered to the water supply port, and then replenished to each of the humidifier bodies connected to the water inlet pipe via the water inlet pipe. In this way, by jointly controlling the characteristic parameters of the water flowing into the water replenishment device and the water usage of the humidifier, automatic water replenishment of the humidifier is achieved, which solves the technical problem that the water replenishment function of centralized humidifiers is relatively simple and therefore cannot achieve automatic water replenishment. At the same time, by matching the characteristic parameters, a clean and stable water source is guaranteed for the humidifier, thereby improving the safety of the humidifier and the reliability of automatic water replenishment.

[0055] In some embodiments, see Figure 2 This is a schematic diagram of the structure of a water replenishment device provided in an exemplary embodiment of this application. The water inlet control component 12 includes: a detection component 122 and a filter component 123.

[0056] The detection component 122 is connected to the water inlet 11, and the output end of the detection component 122 is connected to the signal detection end of the water inlet control component 12; the filter component 123 is connected between the detection component 122 and the input port of the water inlet valve 121, and the controlled end of the detection component 122, the controlled end of the filter component 123, and the controlled end of the water inlet valve 121 are all connected to the controlled end of the water inlet control component 12;

[0057] The detection component 122 is configured to collect and output characteristic parameters of the water flowing into the inlet, including water flow rate parameters, water temperature parameters, and water quality parameters.

[0058] The control circuit 14 is configured to generate a water inlet command when any of the aforementioned characteristic parameters are detected to be within the preset characteristic range; or, when any of the aforementioned characteristic parameters are detected to be outside the preset characteristic range, output a corresponding alarm and a data acquisition command to instruct the detection component to re-acquire the characteristic parameters until all acquired characteristic parameters are detected to be within the preset characteristic range.

[0059] The filter assembly 123 is configured to filter the incoming water in response to the water inlet command sent by the control circuit, so that the filtered water flows into the humidifier through the water inlet valve.

[0060] In this embodiment, the detection component can be an electronic device capable of detecting water flow, water temperature, and water quality, such as a three-in-one sensor integrating a flow meter, temperature sensor, and TDS water quality sensor. The filtration component can be an electronic device with sterilization and filtration functions, such as an ultraviolet germicidal lamp and filter cotton (e.g., 1µm PP cotton), but is not limited to these. The detection component then sends the collected characteristic parameters of the water flowing into the inlet to the control circuit, allowing the control circuit to detect whether these characteristic parameters are within a preset range. These characteristic parameters include, but are not limited to, water flow parameters, water temperature parameters, and water quality parameters, thereby generating an inlet water command. Further, the control circuit, based on this inlet water command, controls the filtration component to start, filtering the water flowing into the filtration component, and then delivering the filtered water to the water supply outlet. For example, in response to the inlet water command, the control circuit controls the ultraviolet germicidal lamp to be turned on to sterilize the flowing water, which then flows into the 1µm PP cotton for filtration. Optionally, when the control circuit does not receive a water inlet command (i.e., at least one characteristic parameter is not within a preset characteristic range), the filter component remains closed, which saves energy and extends the life of the filter component (such as an ultraviolet germicidal lamp). Therefore, by configuring the detection component and the filter component, this application ensures the cleanliness of the water flowing into the humidifier, thereby improving the working efficiency and performance of the humidifier.

[0061] In some embodiments, the water replenishment device further has a return water inlet for connection to a return water pipe that is connected to the end of the inlet pipe in the humidification device;

[0062] The water replenishment device also includes a water return component, which includes a delivery pipe and a pressure sensor disposed on the delivery pipe. The delivery pipe connects the water return port and the water inlet, so that water from the water return port flows into the water inlet through the delivery pipe.

[0063] The pressure sensor, with its control terminal connected to the controlled terminal of the control circuit, is configured to send the return water pressure of the delivery pipe to the control circuit. When the control circuit detects that the return water pressure is within a preset return water pressure range, it generates a detection command that acts on the detection component. The detection command is used to instruct the start of collecting the characteristic parameters.

[0064] In this embodiment, the humidifier also includes a return water pipe connected to the end of the inlet pipe to return the water supplied by the humidifier to the water replenishment device. The return water component serves to circulate the water supply and, before replenishing the humidifier, detects whether the return water pressure in its delivery pipe remains within a reasonable range. This ensures the normal operation of both the water replenishment device and the humidifier, as well as the water circulation effect, reducing the risk of insufficient water pressure or pipe bursts. Therefore, a pressure sensor detects the return water pressure in the delivery pipe and sends it to the control circuit. When the control circuit determines that the return water pressure is within the normal range, it generates a detection command to control the detection component to start collecting characteristic parameters. Optionally, if the control circuit determines that the return water pressure is outside the normal range, it issues a warning about an abnormality in the return water component, allowing for timely inspection and repair. Therefore, this embodiment, by configuring a return water component and detecting the return water pressure, ensures the humidifier operates normally and improves water utilization efficiency through water recycling.

[0065] In some embodiments, see Figure 2 This is a schematic diagram of the structure of a water replenishment device provided in an exemplary embodiment of this application. The water inlet control component further includes:

[0066] A pressure valve is connected between the output port of the inlet valve and the water supply port, and the output end of the pressure valve is connected to the signal detection end of the inlet control component.

[0067] The pressure valve is configured to send pipeline pressure at the end of the water inlet control component to the control circuit, such that when the control circuit detects that the pipeline pressure is lower than a preset end pressure threshold, it generates a valve control command to instruct the water inlet valve to be closed.

[0068] In this embodiment, a pressure valve is connected between the output port of the inlet valve and the water supply port, and the pressure valve is located relatively close to the water supply port. The pressure valve is used to detect the pipe pressure at the end of the water replenishment device in real time (the pipe pressure remains constant during normal system operation). When the control circuit determines that the pipe pressure is lower than the set end pressure threshold, it determines that there is a problem such as a leak in the pipe where the water inlet control component is located, causing the low pipe pressure. It then generates a valve control command to close the inlet valve, disconnecting the pipe where the water inlet control component is located, stopping the water supply to the humidifier, and issuing an alarm to indicate a pipe leak. Therefore, this embodiment, by configuring a pressure valve, achieves automatic protection against pipe leaks, improving the reliability of water replenishment and enhancing the safety and reliability of the system.

[0069] In some embodiments, see Figure 2 This is a schematic diagram of the structure of a water replenishment device provided in an exemplary embodiment of this application. The water inlet control component further includes: a pressure regulating valve;

[0070] The pressure regulating valve is connected between the output port of the inlet valve and the water supply port. The controlled end of the pressure regulating valve is connected to the control end of the control circuit, so that the pressure regulating valve responds to the water supply pressure control command sent by the control circuit and performs corresponding pressure regulation. The water supply pressure control command is generated by the control circuit based on the configured number of humidifier bodies and then sent.

[0071] In this embodiment, the pressure regulating valve is connected between the output port of the inlet valve and the water supply port. The pressure regulating valve is used to adjust the water supply pressure of the water replenishment device according to the floor height and / or the number of water-using equipment (such as humidifiers) on site, so as to achieve flexible adjustment and prevent the system pipeline pressure from being too high and damaging the water-using equipment.

[0072] In another alternative embodiment, see Figure 2 The diagram below is a schematic diagram of a water replenishment device provided in an exemplary embodiment of this application. This embodiment may be configured with a pressure valve and a pressure regulating valve. The pressure valve is located near the water supply port (i.e., at the end of the pipeline where the water inlet control component is located). The pressure regulating valve is connected between the pressure valve and the water inlet valve. Therefore, this embodiment further improves the reliability of water replenishment and achieves stable operation of the system by configuring a pressure valve and a pressure regulating valve at the same time.

[0073] In some embodiments, the water inlet control assembly further includes: a normally open solenoid valve;

[0074] The normally open solenoid valve is connected between the water supply system and other water-using equipment except for the water replenishment device; the controlled end of the normally open solenoid valve is connected to the control end of the control circuit, so that when the control circuit detects that the water pressure of the water replenishment device is lower than the preset water pressure threshold, it outputs a water inlet control command. The water inlet control command is used to control the closing of the normally open solenoid valve to stop the water supply system from supplying water to other water-using equipment.

[0075] In this embodiment, a normally open solenoid valve is connected between the water supply system and other water-using devices except for the water replenishment device. Under normal conditions, the normally open solenoid valve remains open, allowing water to flow and supplying water to other devices. Then, when the control circuit detects that the system pressure (such as the water pressure of the water replenishment device) is lower than a water pressure threshold, it closes the normally open solenoid valve, stopping water flow and preventing the water supply system from supplying water to other devices, prioritizing the humidifier's water supply. Therefore, this embodiment, by configuring a normally open solenoid valve, ensures the normal operation of the humidifier, and by controlling the normally open solenoid valve, it can flexibly control the amount and pressure of water flowing into the water replenishment device, ensuring the working efficiency of the water replenishment device.

[0076] In some embodiments, the water return assembly further includes: a normally closed solenoid valve installed on the delivery pipe;

[0077] The controlled end of the normally closed solenoid valve is connected to the control end of the control circuit. The normally closed solenoid valve is configured to be controlled by the return water control command sent by the control circuit. The normally closed solenoid valve is opened to discharge water from the delivery pipe. The return water control command is sent by the control circuit in response to the shutdown command.

[0078] In this embodiment, a normally closed solenoid valve is located on the delivery pipe of the return water assembly (e.g., at the end of the delivery pipe) to control the opening and closing of the delivery pipe. Under normal conditions, the normally closed solenoid valve remains closed and does not conduct. The control circuit responds to the shutdown command by generating a return water control command, causing the normally closed solenoid valve to open under the control of the return water control command, thereby draining the water from the delivery pipe and simultaneously depressurizing the pipeline. Therefore, this embodiment, by configuring a normally closed solenoid valve, achieves pipeline depressurization during shutdown, reducing the risk of pipe bursts due to excessive pressure and improving the reliability of the water replenishment device.

[0079] In some embodiments, the control circuit includes:

[0080] microprocessor;

[0081] A water quality detection circuit includes a voltage generating circuit, a current rectifying circuit, and a low-pass filter circuit. The voltage generating circuit is connected to the detection component to apply an AC voltage of a specified frequency to the detection component, so that when the detection component senses water flowing into the inlet, it outputs a corresponding current reduction value. The current rectifying circuit and the low-pass filter circuit are connected between the current detection terminal of the detection component and the signal input terminal of the microprocessor to rectify and low-pass filter the current reduction value to obtain a voltage signal that is proportional to the current reduction value. The signal output terminal of the microprocessor is connected to the signal input terminal of the detection component, so that the microprocessor obtains water quality parameters through conversion processing and returns them to the detection component.

[0082] And / or, a temperature measurement circuit, wherein the input of the temperature measurement circuit is connected to the output of the thermistor component in the detection component for sensing the temperature of the water flowing into the inlet, and the output of the temperature measurement circuit is connected to the signal input of the detection component; the temperature measurement circuit is configured to convert the resistance value from the detection component into a water temperature parameter and return it to the detection component.

[0083] In this embodiment, the water quality detection circuit works in conjunction with the water quality sensor (such as a TDS water quality sensor) in the detection assembly to achieve real-time detection of TDS water quality parameters. This water quality detection circuit consists of a voltage generation circuit, a current rectification circuit, and a low-pass filter circuit. The voltage generation circuit generates an AC voltage of a certain frequency to be applied to the two ends of the water quality sensor in the detection assembly. When the water quality sensor is placed in water, impurities in the water cause the current flowing through the sensor to decrease, thus obtaining the current reduction value. Subsequently, the current reduction value is precisely rectified and low-pass filtered by the current rectification circuit and the low-pass filter circuit, outputting a voltage signal proportional to the current reduction value. This signal is then converted by a microprocessor to obtain the final TDS water quality parameters.

[0084] In one specific embodiment, see Figure 3 This is a schematic diagram of a water quality detection circuit provided in an exemplary embodiment of this application. The water quality detection circuit consists of a voltage generation circuit and a signal processing circuit. The signal processing circuit is equipped with a counter U3 (e.g., Figure 3The circuit shown includes a 14-stage binary serial counter / divider (CD4060), four operational amplifiers (e.g., 4-channel LM324), 15 capacitors, 16 resistors, and five diodes. The voltage generation circuit is equipped with a three-terminal voltage regulator chip V1 (e.g., MGE6206), a low-dropout linear regulator U5 (e.g., TPS60400), and six capacitors. Specifically, for the voltage generation circuit, the input pin of the three-terminal voltage regulator chip V1 is connected to the power supply VCC_5.0V. Capacitor C16 is connected between the input pin of the three-terminal voltage regulator chip V1 and the ground point. Capacitor C18 is connected in parallel across capacitor C16. The ground pin of the three-terminal voltage regulator chip V1 is grounded. The output pins of the three-terminal voltage regulator chip V1 are connected to the first voltage output terminal +3.0V of the voltage generation circuit and the ground pin of the low-dropout linear regulator U5, respectively. Capacitor C19 is connected between the output pin of the three-terminal voltage regulator chip V1 and the ground point. Capacitor C20 is connected in parallel across capacitor C19. The input pin of the low-dropout linear regulator U5 is connected to the second voltage output terminal -3.0V of the voltage generator circuit. Capacitor C17 is connected between the input pin of the low-dropout linear regulator U5 and the ground point. The output pin of the low-dropout linear regulator U5 is connected to the enable pin EN of the low-dropout linear regulator U5 through capacitor C21. The NC / FB pin of the low-dropout linear regulator U5 is grounded. Thus, the voltage generator circuit outputs an AC voltage (e.g., 3.0V) of a certain frequency and applies it to the signal processing circuit. For the signal processing circuit, the positive power supply terminal of the four operational amplifiers U2A is connected to the first voltage output terminal +3.0V of the voltage generator circuit. The non-inverting input terminals of the four operational amplifiers U2A are grounded. Capacitor C9 is connected between the positive power supply terminal and the non-inverting input terminal of the four operational amplifiers U2A. Capacitor C10 is connected in parallel across capacitor C9. The negative power supply terminal of the 4-channel op-amp U2A is connected to the second voltage output terminal (-3.0V) of the voltage generation circuit, and is grounded through capacitor C5. Capacitor C6 is connected in parallel across capacitor C5. The output terminal of the 4-channel op-amp U2A is connected to the first current detection terminal (tds+) of the water quality sensor. The inverting phase input terminal of the 4-channel op-amp U2A is connected to the output terminal of the 4-channel op-amp U2A through resistor R1, and is connected to pin Q4 of counter U3 through resistor R3. The non-inverting input terminal of the 4-channel op-amp U2C is grounded, and the inverting input terminal is connected to the second current detection terminal (tds-) and grounded through resistor R13. The output of the 4-channel op-amp U2C is connected to the second current detection terminal tds- of the water quality sensor through resistor R8. This output is connected to the inverting input terminal of the 4-channel op-amp U2B through resistor R10, and this output is connected to the non-inverting input terminal of the 4-channel op-amp U2D through resistor R11.The non-inverting input of the 4-channel op-amp U2B is grounded. Diode D2 is connected in parallel between the inverting input and output of the 4-channel op-amp U2B. The output of the 4-channel op-amp U2B is connected to the positive terminal of diode D3. Resistor R5 is connected in parallel between the inverting input of the 4-channel op-amp U2B and the negative terminal of diode D3. Diode D4 is connected in parallel between the inverting input and output of the 4-channel op-amp U2D. One end of resistor R12 is connected to the inverting input of the 4-channel op-amp U2D, and the other end of resistor R12 is connected to the negative terminals of diodes D3 and D5. The positive terminal of diode D5 is connected to the output of the 4-channel op-amp U2D. The negative terminal of diode D5 is connected to the output terminal ADC1 of the signal processing circuit through resistors R15 and R16 in sequence. The first end of capacitor C14 is connected between resistors R15 and R16, and the second end is grounded. Diode D6 has its positive terminal grounded and its negative terminal connected to the output of the signal processing circuit. Capacitor C15 is connected in parallel across diode D6. Counter U3's VCC pin is connected to the first voltage output terminal (+3.0V) of the voltage generator circuit. Counter U3's CIN pin is grounded through capacitor C1, and this CIN pin is connected to the second counting pin of counter U3 through resistors R2 and R7. This CIN pin is also connected to the first counting pin of counter U3 through capacitor C7. Counter U3's reset RST pin is connected to the second voltage output terminal (-3.0V) of the voltage generator circuit. Counter U3's GND pin is also connected to the second voltage output terminal (-3.0V) of the voltage generator circuit, and this GND pin is grounded through capacitor C11.

[0085] In another specific embodiment, see Figure 4 This is a schematic diagram of a control circuit provided in an exemplary embodiment of this application. The control circuit includes a main control section, a BOOT, an EEPROM memory, a power supply section, a liquid crystal driving circuit, and other auxiliary sections. The main control section may be a 32-bit microprocessor; the power supply section may be a control board power supply voltage regulator circuit, used to step down the pulsating 24V DC power supply to various voltage specifications to provide stable and reliable DC power to various electronic devices and the microprocessor; the liquid crystal driving circuit uses a TTL serial port to drive a serial port liquid crystal, and displays the collected information on the liquid crystal screen in real time through the microprocessor.

[0086] Specifically, regarding the power supply section, it is equipped with a positive low-dropout regulator U1 (e.g., Figure 4The diagram shows an AMS1117-3.3V (a forward low-dropout regulator with an output voltage of 3.3V), diode D1, three capacitors, resistor R6, and precision surface-mount resistor FU1. The input of the forward low-dropout regulator U1 is connected to a power supply VCC 5.0V, and this input is connected to another power supply VCC 5.0V via the precision surface-mount resistor FU1. This input is grounded through capacitor C2. The ground terminal of the forward low-dropout regulator U1 is grounded, and its output terminal is connected to the output terminal VCC 3.3V of the power supply section. This output terminal is grounded through capacitor C3. Resistor R6 (connected in series) and diode D1 (connected in parallel) are connected across capacitor C3. Capacitor C4 is connected between the output terminal of the power supply section and the ground point. For the LCD driving circuit, an LCD module (such as...) is configured. Figure 4 The 4P connector shown has its first pin connected to the power supply VCC (5.0V), its second pin connected to the RXD terminal of the LCD driver circuit, and its third pin connected to the TXD terminal of the LCD driver circuit. For the BOOT, a microswitch S2 and three resistors are configured. One end of the microswitch S2 is connected to the power supply VCC (3.3V), and the other end is connected to the BOOT output terminal BOOT0 through resistor R24. The BOOT output terminal BOOT0 is grounded through resistor R25, and the BOOT connection terminal BOOT1 is grounded through resistor R28. For the EEPROM, a memory U9 (e.g., ...) is configured... Figure 4 The EEPROM memory (AT24C02) shown is connected to two resistors. The A0, A1, A2, and VSS pins of memory U9 are grounded. The SCL pin is connected to the signal terminal SCL2 of the EEPROM memory, and the SCL pin is connected to the VCC pin through resistor R26. The SDA pin is connected to the signal terminal SDA2 of the EEPROM memory, and the SDA pin is connected to the VCC pin through resistor R27. The VCC pin is connected to the power supply VCC3.3V (which can be the output terminal VCC3.3V of the power supply section).

[0087] For other auxiliary parts, such as Figure 4 As shown, the auxiliary section includes a JP3 connection circuit for connecting to the jumper interface JP3 of the drive circuit, a JP2 connection circuit for connecting to the jumper interface JP2 of the drive circuit, and five auxiliary circuits. The JP2 connection circuit has a JR terminal connected to the third pin of the jumper interface JP2, an SJ terminal connected to the fourth pin of the jumper interface JP2, a QF terminal connected to the fifth pin of the jumper interface JP2, a PW terminal connected to the sixth pin of the jumper interface JP2, a PW1 terminal connected to the seventh pin of the jumper interface JP2, an MD terminal connected to the eighth pin of the jumper interface JP2, and a LIGHT terminal connected to the ninth pin of the jumper interface JP2.

[0088] For the first auxiliary circuit used to connect to the PSR board of the drive circuit, the first signal terminal PSR of the first auxiliary circuit is connected to resistor R4 and resistor R9 in sequence to ground, and capacitor C8 is connected in parallel across resistor R9. A second signal terminal ADC3 is connected between resistors R4 and R9. For the second auxiliary circuit, the linear optocoupler U4 (e.g., ...) of the second auxiliary circuit... Figure 4 In the EL3H7 shown, the positive terminal of the LED is connected to the signal terminal LS of the second auxiliary circuit through resistor R14. The negative terminal of the LED in the linear optocoupler U4 is connected to the signal terminal LS of the second auxiliary circuit through capacitor C12, and this negative terminal is grounded. The collector of the phototransistor in the linear optocoupler U4 of the second auxiliary circuit is grounded through capacitor C13, and this collector is connected to the signal terminal IN3 of the second auxiliary circuit. The emitter of the phototransistor in the linear optocoupler U4 is grounded. For the third auxiliary circuit, the linear optocoupler U6 of the third auxiliary circuit (as shown) Figure 4 In the EL3H7 shown, the positive terminal of the LED is connected to the power supply VCC 5.0V through resistor R17. The negative terminal of the LED in the linear optocoupler U6 is connected to the signal terminal SCF of the third auxiliary circuit, and this negative terminal is grounded through capacitor C23. The collector of the phototransistor in the linear optocoupler U6 of the third auxiliary circuit is grounded through capacitor C22, and this collector is connected to the signal terminal IN2 of the third auxiliary circuit. The emitter of the phototransistor in the linear optocoupler U6 is grounded. For the fourth auxiliary circuit, the linear optocoupler U8 of the fourth auxiliary circuit (as shown) Figure 4 In the EL3H7 shown, the positive terminal of the LED is connected to the power supply VCC 5.0V through resistor R18. The negative terminal of the LED in the linear optocoupler U8 is connected to the signal terminal SJ of the fourth auxiliary circuit, and this negative terminal is grounded through capacitor C26. The collector of the phototransistor in the linear optocoupler U8 of the fourth auxiliary circuit is grounded through capacitor C27, and this collector is connected to the signal terminal IN1 of the fourth auxiliary circuit. The emitter of the phototransistor in the linear optocoupler U8 is grounded. For the fifth auxiliary circuit, the linear optocoupler U11 of the fifth auxiliary circuit (as shown) Figure 4 In the EL3H7 shown, the positive terminal of the LED is connected to the power supply VCC 5.0V. The negative terminal of the LED in the linear optocoupler U11 is connected to the signal terminal Q_IN of the fifth auxiliary circuit, and this negative terminal is connected to the power supply VCC 5.0V through capacitor C36. The collector of the phototransistor in the linear optocoupler U11 of the fifth auxiliary circuit is connected to the power supply VCC 3.3V through resistor R29, and this collector is connected to the signal terminal Q of the fifth auxiliary circuit. The emitter of the phototransistor in the linear optocoupler U8 is grounded.

[0089] For the JP3 connection circuit, the first pin of jumper interface JP3 is connected to the signal terminal Q_IN of the fifth auxiliary circuit; the second pin of jumper interface JP3 is connected to the signal terminal ADC2 of the JP3 connection circuit, and the signal terminal ADC2 is grounded through capacitor C35; the third pin of jumper interface JP3 is connected to the second current detection terminal tds- of the water quality sensor, and the fourth pin of jumper interface JP3 is connected to the first current detection terminal tds+ of the water quality sensor; the fifth pin of jumper interface JP3 is connected to the first signal terminal PSR of the first auxiliary circuit; the sixth pin of jumper interface JP3... The pin is connected to the signal terminal DQ of the JP3 connection circuit. This signal terminal DQ is connected to the power supply VCC3.3V through resistor R21. Resistor R23 is connected between the signal terminal ADC2 and the power supply VCC3.3V. The seventh pin of the jumper interface JP3 is connected to the signal terminal POWER of the JP3 connection circuit through resistor R20. The eighth pin of the jumper interface JP3 is connected to the signal terminal SJ of the fourth auxiliary circuit. The ninth pin of the jumper interface JP3 is connected to the signal terminal SCF of the third auxiliary circuit. The tenth pin of the jumper interface JP3 is connected to the signal terminal LS of the second auxiliary circuit.

[0090] Regarding the main control section, this main control section includes a microcontroller U7A (such as...). Figure 4 The first control circuit of the STM32F103C8T6 shown is equipped with a microcontroller U7B (such as...). Figure 4 The second control circuit of the STM32F103C8T6 shown is equipped with a button plug (such as...). Figure 4 The 4P connector shown includes a key detection circuit (using a common miniature key switch to set user parameters and view system alarms) and an ISP configuration (such as...). Figure 4 The ISP circuit of the 4P connector shown.

[0091] For the second control circuit, the VBAT, VDD_1, VDD_2, VDD_3, and VDDA pins of the microcontroller U7B are all connected to the power supply VCC3.3V (i.e., the output terminal VCC3.3V of the power supply section), and these pins are grounded through capacitor C28. The VSS_1, VSS_2, VSS_3, and VSSA pins of the microcontroller U7B are grounded.

[0092] For the key detection circuit, the first pin of the key plug is grounded, the second pin is connected to the second signal terminal KEY2 of the key detection circuit, the third pin is connected to the first signal terminal KEY1 of the key detection circuit, and the fourth pin is grounded through capacitor C31 and connected to the third signal terminal KEY0 of the key detection circuit. The first signal terminal KEY1 is grounded through capacitor C33, and the second signal terminal KEY2 is grounded through capacitor C34.

[0093] For the ISP circuit, the first pin of the ISP circuit is connected to the first signal terminal RXD of the ISP circuit (that is, the first signal terminal RXD of the ISP circuit is connected to the connection terminal RXD of the liquid crystal driving circuit), the second pin is connected to the second signal terminal TXD of the ISP circuit (that is, the second signal terminal TXD of the ISP circuit is connected to the connection terminal TXD of the liquid crystal driving circuit), the third pin is grounded, and the fourth pin is connected to the power supply VCC5.0V.

[0094] For the first control circuit, the PA0-WKUP pins of the microcontroller U7A are connected to the signal terminal Q and grounded through capacitor C24. The PA1 pin of the microcontroller U7A is connected to the output terminal ADC1 of the signal processing circuit, used to receive signals from the signal processing circuit and output them after processing by the microcontroller U7A; the PA1 pin is also grounded through capacitor C25. The PA3 pin of the microcontroller U7A is connected to the signal terminal ADC2 of the JP3 connection circuit. The PA4 pin of the microcontroller U7A is connected to the second signal terminal ADC3 of the first auxiliary circuit, and the PA4 pin is connected to the base of amplifier Q1 (e.g., high-frequency amplifier - PNP type, SS8550) through resistor R19. Its emitter is connected to the power supply VCC_3.3V, and its collector is connected to the positive input terminal of the source buzzer LS1 (e.g., DC3.3V). The negative input terminal of the source buzzer LS1 is grounded. The PA9 pin of the microcontroller U7A is connected to the second signal terminal TXD of the ISP circuit, and the PA10 pin is connected to the first signal terminal RXD of the ISP circuit. The PA12 pin of the microcontroller U7A is connected to the signal terminal DQ of the JP3 connection circuit; the PA13 pin is connected to the third signal terminal KEY0 of the key detection circuit; the PA14 pin is connected to the first signal terminal KEY1 of the key detection circuit; and the PA15 pin is connected to the second signal terminal KEY2 of the key detection circuit. The PB2 pin of the microcontroller U7A is connected to the BOOT1 terminal of the BOOT circuit; the PB3 pin is connected to the JR terminal of the JP2 circuit; the PB4 pin is connected to the SJ terminal of the JP2 circuit; the PB5 pin is connected to the QF terminal of the JP2 circuit; the PB6 pin is connected to the PW terminal of the JP2 circuit; the PB7 pin is connected to the PW1 terminal of the JP2 circuit; the PB8 pin is connected to the MD terminal of the JP2 circuit; the PB9 pin is connected to the LIGHT terminal of the JP2 circuit; the PB10 pin is connected to the SCL2 terminal of the EEPROM memory; the PB11 pin is connected to the SDA2 terminal of the EEPROM memory; the PB12 pin is connected to the POWER terminal of the JP3 circuit; the PB13 pin is connected to the IN1 terminal of the fourth auxiliary circuit; the PB14 pin is connected to the IN2 terminal of the third auxiliary circuit; and the PB15 pin is connected to the IN3 terminal of the second auxiliary circuit. The PDO-OSC_IN pin of the microcontroller U7A is connected to the first terminal of the crystal oscillator Y1 (e.g., an 8MHz crystal oscillator), and the PD1 pin of the microcontroller U7A is connected to the second terminal of the crystal oscillator Y1. Capacitors C29 and C30, connected in series, are connected in parallel across the two terminals of the crystal oscillator Y1, and the connection between capacitors C29 and C30 is grounded. The BOOT0 pin of the microcontroller U7A is connected to the BOOT output terminal.The NRST pin of the microcontroller U7A is connected to the first terminal of the micro switch S1, and the NRST pin is connected to the power supply VCC3.3V through resistor R22. The second terminal of the micro switch S1 is grounded, and capacitor C32 is connected in parallel across the two terminals of the micro switch S1.

[0095] For example, capacitor C1 is a 100nF / 25V surface mount capacitor; capacitors C2, C3, C13, C22, C25, C27, C28, C32, and C36 are 0.1uf / 50V surface mount capacitors; capacitor C4 is a 470uf / 6.3V surface mount capacitor; capacitors C5 and C10 are 4.7uf surface mount capacitors; and capacitors C6, C9, C11, C15, C17, and C18 are also surface mount capacitors. C20 are all 0.1uf / 50V surface mount capacitors; C7 is a 1nF surface mount capacitor; C8, C16, C19, and C21 are all 10uf surface mount capacitors; C12, C23, C24, C26, C31, C33, C34, and C35 are all 0.1uf / 50V capacitors; C14 is a 0.1uf / 50V surface mount capacitor; and C29 and C30 are both 22pF capacitors. Diode D1 is an LED diode; diodes D2, D3, D4, and D5 are switching diodes (e.g., 1N4148); and diode D6 is a Schottky diode (e.g., B5819WS). Resistors R1 and R4 are 6.8kΩ surface mount resistors; resistors R2, R3, R24, R25, and R28 are 100kΩ surface mount resistors; resistors R5, R7, R9, R10, R11, R12, R15, R16, R18, R19, R22, and R23 are 10kΩ surface mount resistors; resistors R6, R14, R17, R21, and R29 are 1kΩ surface mount resistors; resistor R8 is a 5.6kΩ surface mount resistor; resistor R13 is a 1mΩ surface mount resistor; resistor R20 is a 200Ω surface mount resistor; and resistors R26 and R27 are 2kΩ surface mount resistors.

[0096] Based on the above embodiments, in this application, the water replenishment device amplifies the output signal of the control circuit by configuring a drive circuit, thereby driving devices such as relays to control the start and stop of the devices in the water inlet control assembly. For example, see... Figure 5 This is a schematic diagram of a driving circuit provided in an exemplary embodiment of this application. The driving circuit includes a PSR board, jumper interface JP2, jumper interface JP3, processing circuit, TDS driving circuit, and multiple auxiliary circuits. Based on the above discussion, as... Figure 5As shown, the first pin of jumper interface JP3 is connected to signal terminal Q; the second pin is connected to signal terminal TEMP; the third pin is connected to the second current detection terminal tds- of the water quality sensor; the fourth pin is connected to the first current detection terminal tds+ of the water quality sensor; the fifth pin is connected to signal terminal PSR; the sixth pin is connected to signal terminal DQ; the seventh pin is connected to signal terminal POWER; the eighth pin is connected to signal terminal SJ; the ninth pin is connected to signal terminal SCF; and the tenth pin is connected to signal terminal LS. For the PSR board, its first pin is grounded, the second pin is connected to signal terminal PSR, and the third pin is connected to power supply VCC 5.0V.

[0097] The TDS driver circuit is designed to drive the water quality sensor based on the control signal from the control circuit. Specifically, the first pin of the TDS driver circuit is connected to the power supply VCC 5.0V, the second pin is grounded, the third pin is connected to the signal terminal Q, the fourth pin is connected to the signal terminal TEMP, the fifth pin is connected to the second current detection terminal tds- of the water quality sensor, and the sixth pin is connected to the first current detection terminal tds+ of the water quality sensor.

[0098] The processing circuit is configured with a control unit M1 (such as ULN2003L) and multiple relays. Specifically, the IN1 pin of control unit M1 is connected to the MD terminal corresponding to the eighth pin of jumper interface JP2; the IN2 pin is connected to the PW1 terminal corresponding to the seventh pin of jumper interface JP2; the IN3 pin is connected to the PW terminal corresponding to the sixth pin of jumper interface JP2; the IN4 pin is connected to the QF terminal corresponding to the fifth pin of jumper interface JP2; the IN5 pin is connected to the SJ terminal corresponding to the fourth pin of jumper interface JP2; and the IN6 pin is connected to the JR terminal corresponding to the third pin of jumper interface JP2. The GND pin of control unit M1 is grounded. The OUT1 pin of control unit M1 is connected to the second contact of relay JK1 (e.g., SRD-0.5VDC-SL-C). The first contact is connected to the power supply VCC5.0V. The third contact is connected to the voltage input terminal IN_24V and the voltage output terminal VCC_24VVout of the processing circuit, respectively. A fuse F1 is connected between the voltage input terminal and the voltage output terminal. The fifth contact is connected to the signal terminal MD24V of the processing circuit. The OUT2 pin of control unit M1 is connected to the signal terminal PAIWU1; the OUT3 pin is connected to the signal terminal PAIWU; and the OUT4 pin is connected to the signal terminal QIUFA. The OUT5 pin of control unit M1 is connected to the second contact of relay JK3 (e.g., HF46F / 5-HS1). The first contact is connected to the power supply VCC5.0V. The third contact is connected to the signal terminal L of the processing circuit, and the fourth contact is connected to the signal terminal SJ_AC of the processing circuit. The OUT6 pin of the control unit M1 is connected to the second contact of the relay JK2 (e.g., SRD-0.5VDC-SL-C), the first contact is connected to the power supply VCC5.0V, the third contact is connected to the signal terminal L of the processing circuit, and the fifth contact is connected to the signal terminal JR_AC of the processing circuit.

[0099] In this embodiment, the assist circuit includes a first assist circuit configured with relay JK4 (e.g., HF46F / 5-HS1), a second assist circuit configured with relay JK5 (e.g., HF46F / 5-HS1), a third assist circuit configured with relay JK6 (e.g., HF46F / 5-HS1), a fourth assist circuit, and multiple connection circuits. For the first assist circuit, the second contact of relay JK4 is connected to the signal terminal PAIWU1, the first contact is connected to the power supply VCC5.0V, the third contact is connected to the signal terminal VCC_24Vout, and the fourth contact is connected to the signal terminal PWOUT. For the second assist circuit, the second contact of relay JK5 is connected to the signal terminal PAIWU, the first contact is connected to the power supply VCC5.0V, the third contact is connected to the signal terminal VCC_24Vout, and the fourth contact is connected to the signal terminal PW1OUT. For the third auxiliary circuit, the second contact of relay JK6 is connected to the signal terminal QIUFA, the first contact is connected to the power supply VCC5.0V, the third contact is connected to the signal terminal VCC_24Vout, and the fourth contact is connected to the signal terminal QFOUT. For the fourth auxiliary circuit, the positive terminal of the LED in the linear optocoupler U12 of the fourth auxiliary circuit is connected to the LIGHT terminal corresponding to the ninth pin of the jumper interface JP2 through resistor R30, and the negative terminal of the LED in the linear optocoupler U12 is grounded. The collector of the phototransistor in the linear optocoupler U12 of the fourth auxiliary circuit is connected to the power supply VCC_24V and the collector of amplifier Q2, respectively. The base of amplifier Q2 is connected to the emitter of the phototransistor, and the emitter of amplifier Q2 is connected to the signal terminal light_out of the fourth auxiliary circuit.

[0100] For the connection circuits, the first connection circuit is equipped with a connector for the signal terminal MD. The first interface of the connector is connected to the signal terminal MD24V of the processing circuit, the second interface is connected to the signal terminal LS of the jumper interface JP3, and the third interface is grounded. The second connection circuit is equipped with a connector for AC-220V. The first interface of the connector is connected to the signal terminal SJ_AC of the processing circuit, the second interface is connected to the signal terminal JR_AC of the processing circuit, and the third interface is connected to the signal terminal N. The third connection circuit includes a connector for 24V-OUT. The first interface of the connector is connected to the signal terminal PWOUT, the second interface is connected to the signal terminal PW1OUT, the third interface is connected to the signal terminal QFOUT, and the fourth, fifth, and sixth interfaces are all grounded. The fourth connection circuit includes a jumper interface JP4. The first pin of jumper interface JP4 is connected to the signal terminal SCF of jumper interface JP3, and the third pin is connected to the signal terminal POWER (i.e.,...) of jumper interface JP3. Figure 5The PWR pin is connected to the fourth auxiliary circuit, and the fifth pin is connected to the light_out signal terminal of the fourth auxiliary circuit. The second, fourth, and sixth interfaces are all grounded. The fifth connection circuit includes a connector for the AC_IN power supply. The first interface of the connector is connected to the L signal terminal of the processing circuit, and the second interface is connected to the N signal terminal. Similarly, the sixth connection circuit includes a connector for the AC_OUT power supply. The first interface of the connector is connected to the L signal terminal of the processing circuit, and the second interface is connected to the N signal terminal.

[0101] Example 2

[0102] The humidifier includes: a water replenishment device and a humidification device as described in the above embodiments; the humidification device includes a water inlet pipe and at least one humidifier body connected to the water inlet pipe; the water inlet of the water replenishment device is connected to the water supply system, the water supply port of the water replenishment device is connected to the water inlet pipe, and the signal input terminal of the water replenishment device is connected to the control terminal of each of the humidifier bodies.

[0103] This embodiment provides a humidifier, which includes a water replenishment device and a humidification device. The humidification device includes a water inlet pipe and at least one humidifier body connected to the water inlet pipe. The water inlet of the water replenishment device is connected to a water supply system, and the water supply outlet of the water replenishment device is connected to the water inlet pipe. The signal input terminals of the water replenishment device are all connected to the control terminals of each of the humidifier bodies. The control circuit in the water replenishment device outputs a water replenishment command under the joint control of water request water replenishment commands from at least one humidifier body. The water replenishment command is controlled by the water replenishment control component in the water replenishment device, which sends characteristic parameters of the water originating from the water supply system and a pre-defined water supply command. The comparison results between the characteristic ranges are used to make the water inlet control component respond to the water replenishment command and control the opening of the water inlet valve in the water inlet control component. This allows the water flowing into the water inlet to be transported to the water supply outlet, and then replenished to the humidifier body through the water inlet pipe. By jointly controlling the characteristic parameters of the water flowing into the water replenishment device and the water usage of the humidifier, automatic water replenishment of the humidifier is achieved. This solves the technical problem that the water replenishment function of centralized humidifiers is relatively simple, which makes it impossible to achieve automatic water replenishment. At the same time, by matching the characteristic parameters, a clean and stable water source is guaranteed for the humidifier, thereby improving the safety of the humidifier and the reliability of automatic water replenishment.

[0104] The above description is only an optional implementation method for some implementation scenarios of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application without departing from the technical concept of this application also fall within the protection scope of the embodiments of this application.

Claims

1. A water replenishment device, characterized in that, The water replenishment device has an inlet for connecting to a water supply system, an outlet for connecting to an inlet pipe in a humidifier, and a signal input terminal for connecting to a control terminal of at least one humidifier body in the humidifier. The water replenishment device includes a control circuit and a water inlet control component; the water inlet control component is connected between the water inlet and the water supply outlet, the controlled terminal of the control circuit is connected to the signal input terminal and the signal detection terminal of the water inlet control component, and the control terminal of the control circuit is connected to the controlled terminal of the water inlet control component. The control circuit is configured to output a water replenishment command under the joint control of a water request and a water inlet command from at least one of the humidifier bodies. The water inlet command is controlled by a comparison result sent by the water inlet control component between characteristic parameters of water originating from the water supply system and a preset characteristic range. The water inlet control assembly, including the water inlet valve, is configured to control the opening of the water inlet valve in response to the water replenishment command, so that water flowing into the water inlet is delivered to the water supply port to replenish water to each of the humidifier bodies connected to the water inlet pipe via the water inlet pipe; The water inlet control component includes: a detection component and a filtration component; The detection component is connected to the water inlet, and the output end of the detection component is connected to the signal detection end of the water inlet control component; the filter component is connected between the detection component and the input port of the water inlet valve, and the controlled end of the detection component, the controlled end of the filter component, and the controlled end of the water inlet valve are all connected to the controlled end of the water inlet control component; The detection component is configured to collect and output characteristic parameters of the water flowing into the inlet, including water flow rate parameters, water temperature parameters, and water quality parameters. The control circuit is configured to generate a water inlet command when any of the aforementioned characteristic parameters are detected to be within the preset characteristic range; or, when any of the aforementioned characteristic parameters are detected to be outside the preset characteristic range, output a corresponding alarm and a data acquisition command to instruct the detection component to re-acquire the characteristic parameters until all acquired characteristic parameters are detected to be within the preset characteristic range. The filter assembly is configured to filter the incoming water in response to the water inlet command sent by the control circuit, so that the filtered water flows into the humidifier through the water inlet valve. The water replenishment device also has a return water inlet for connecting to the return water pipe at the end of the water inlet pipe in the humidification device; The water replenishment device also includes a water return component, which includes a delivery pipe and a pressure sensor disposed on the delivery pipe. The delivery pipe connects the water return port and the water inlet, so that water from the water return port flows into the water inlet through the delivery pipe. The pressure sensor, with its control terminal connected to the controlled terminal of the control circuit, is configured to send the return water pressure of the delivery pipe to the control circuit. When the control circuit detects that the return water pressure is within a preset return water pressure range, it generates a detection command that acts on the detection component. The detection command is used to instruct the start of collecting the characteristic parameters.

2. The water replenishment device according to claim 1, characterized in that, The water inlet control component also includes: A pressure valve is connected between the output port of the inlet valve and the water supply port, and the output end of the pressure valve is connected to the signal detection end of the inlet control component. The pressure valve is configured to send pipeline pressure at the end of the water inlet control component to the control circuit, such that when the control circuit detects that the pipeline pressure is lower than a preset end pressure threshold, it generates a valve control command to instruct the water inlet valve to be closed.

3. The water replenishment device according to claim 1, characterized in that, The water inlet control component also includes: a pressure regulating valve; The pressure regulating valve is connected between the output port of the inlet valve and the water supply port. The controlled end of the pressure regulating valve is connected to the control end of the control circuit, so that the pressure regulating valve responds to the water supply pressure control command sent by the control circuit and performs corresponding pressure regulation. The water supply pressure control command is generated by the control circuit based on the configured number of humidifier bodies and then sent.

4. The water replenishment device according to claim 1 or 3, characterized in that, The water inlet control component also includes: a normally open solenoid valve; The normally open solenoid valve is connected between the water supply system and other water-using equipment except for the water replenishment device; the controlled end of the normally open solenoid valve is connected to the control end of the control circuit, so that when the control circuit detects that the water pressure of the water replenishment device is lower than the preset water pressure threshold, it outputs a water inlet control command. The water inlet control command is used to control the closing of the normally open solenoid valve to stop the water supply system from supplying water to other water-using equipment.

5. The water replenishment device according to claim 4, characterized in that, The water return assembly further includes: a normally closed solenoid valve installed on the delivery pipe; The controlled end of the normally closed solenoid valve is connected to the control end of the control circuit. The normally closed solenoid valve is configured to be controlled by the return water control command sent by the control circuit. The normally closed solenoid valve is opened to discharge water from the delivery pipe. The return water control command is sent by the control circuit in response to the shutdown command.

6. The water replenishment device according to claim 5, characterized in that, The control circuit includes: microprocessor; A water quality detection circuit includes a voltage generating circuit, a current rectifying circuit, and a low-pass filter circuit. The voltage generating circuit is connected to the detection component to apply an AC voltage of a specified frequency to the detection component, so that when the detection component senses water flowing into the inlet, it outputs a corresponding current reduction value. The current rectifying circuit and the low-pass filter circuit are connected between the current detection terminal of the detection component and the signal input terminal of the microprocessor to rectify and low-pass filter the current reduction value to obtain a voltage signal that is proportional to the current reduction value. The signal output terminal of the microprocessor is connected to the signal input terminal of the detection component, so that the microprocessor obtains water quality parameters through conversion processing and returns them to the detection component. And / or, a temperature measurement circuit, wherein the input of the temperature measurement circuit is connected to the output of the thermistor component in the detection component for sensing the temperature of the water flowing into the inlet, and the output of the temperature measurement circuit is connected to the signal input of the detection component; the temperature measurement circuit is configured to convert the resistance value from the detection component into a water temperature parameter and return it to the detection component.

7. The water replenishment device according to any one of claims 1 to 6, characterized in that, The water replenishment device further includes: a drive circuit; the drive circuit is connected between the control terminal of the control circuit and the controlled terminal of the water inlet control component, and is configured to generate a corresponding drive signal under the control of the control circuit, the drive signal being used to indicate and control the operation of the water inlet control component.

8. A humidifier, characterized in that, include: The water replenishment device and humidification device as described in any one of claims 1 to 7; the humidification device includes a water inlet pipe and at least one humidifier body connected to the water inlet pipe; the water inlet of the water replenishment device is connected to a water supply system, the water supply port of the water replenishment device is connected to the water inlet pipe, and the signal input terminal of the water replenishment device is connected to the control terminal of each of the humidifier bodies.

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