Indoor humidity control device and method

Abstract

The invention discloses an indoor humidity control device and method.The device comprises a hydrogen peroxide decomposition reactor, a controller and a water vapor exhaust pipe communicated with the interior of the room, a water vapor exhaust opening is formed in the hydrogen peroxide decomposition reactor, and the water vapor exhaust opening is communicated with the water vapor exhaust pipe; an oxygen separator is arranged at the water vapor exhaust port, and a water vapor exhaust valve in communication connection with the controller is arranged on the water vapor exhaust pipe; the controller controls the reactor operation state of the hydrogen peroxide decomposition reactor and the water vapor exhaust valve according to the humidity difference value between the received indoor humidity and a preset humidity threshold value. If the operation state of the reactor is in a starting state, the hydrogen peroxide decomposition reactor generates water vapor; and if the operation state of the reactor is in a stop state, the hydrogen peroxide decomposition reactor stops generating water vapor. According to the invention, hydrogen peroxide is adopted to automatically humidify the indoor space, the cost is low, and the safety is high.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an indoor humidity control device and method. Background Art

[0002] The mainstream humidification methods in the air-conditioning industry currently include physical humidification methods such as room temperature water humidification, water atomization humidification and steam humidification. Room temperature water humidification humidifies through the evaporation of water in the air. The process is natural, but the humidification efficiency is relatively low and requires regular maintenance to prevent bacteria from growing. Water atomization humidification includes ultrasonic humidification and high-pressure spray humidification. Ultrasonic humidification uses high-frequency vibration to atomize water into tiny particles. It humidifies evenly, has high efficiency, low noise, and saves energy and electricity. However, it requires high water quality, otherwise it is easy to produce white powder, and the life of the atomizer is limited. High-pressure spray humidification uses a water pump to pressurize water and then spray it. It has a large humidification volume, low noise, and low power consumption, but there may be water droplets precipitated, and the use of unsoftened water will cause impurities such as calcium and magnesium to precipitate. Steam humidification includes electric humidification and electrode humidification. Electric humidification generates steam through heating by electric heating elements. It has high humidification accuracy, but high power consumption, small humidification range, easy to produce scale, and the ejected hot water vapor poses a safety hazard. Electrode humidification uses electric current to pass through water to generate resistive heat, causing the water to evaporate into steam. It has a fast humidification speed, but also has problems such as high power consumption and high water quality requirements.

[0003] In view of this, it is necessary to design a low-cost, high-safety indoor humidity control device and method. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an indoor humidity control device which uses hydrogen peroxide to humidify the room, has low cost and high safety.

[0005] The technical solution of the present invention provides an indoor humidity control device, comprising a hydrogen peroxide decomposition reactor, a controller, and a water vapor exhaust pipe connected to the room, wherein the hydrogen peroxide decomposition reactor is provided with a water vapor exhaust port, the water vapor exhaust port is connected to the water vapor exhaust pipe, an oxygen isolation member is provided at the water vapor exhaust port, and the water vapor exhaust pipe is provided with a water vapor exhaust valve that is communicatively connected to the controller, and the controller controls the reactor operation state of the hydrogen peroxide decomposition reactor and the water vapor exhaust valve according to the humidity difference between the received indoor humidity of the room and a preset humidity threshold;

[0006] If the reactor operation state is in the startup state, the hydrogen peroxide decomposition reactor generates water vapor;

[0007] If the operation state of the reactor is in a stopped state, the hydrogen peroxide decomposition reactor stops generating water vapor.

[0008] In one of the optional technical solutions, the controller is also used for:

[0009] If the humidity difference exceeds a preset difference threshold, the operation state of the reactor is controlled to be the startup state, and the water vapor exhaust valve is opened, so that the water vapor enters the room;

[0010] If the humidity difference does not exceed the difference threshold, the operating state of the reactor is controlled to be the stop state, and the water vapor exhaust valve is closed, and the water vapor stops entering the room.

[0011] In one of the optional technical solutions, a catalyst and a hydrogen peroxide storage tank for storing hydrogen peroxide are provided in the hydrogen peroxide decomposition reactor, a drain valve is provided at the outlet of the hydrogen peroxide storage tank, a heater for heating the hydrogen peroxide decomposition reactor is provided at the bottom of the hydrogen peroxide decomposition reactor, and the controller controls the drain valve and the heater according to the humidity difference.

[0012] In one of the optional technical solutions, the humidity threshold includes an upper humidity limit and a lower humidity limit, and the controller is further used to:

[0013] If the humidity difference is greater than the humidity upper limit, the water vapor exhaust valve and the drain valve are controlled to close, and the heater stops heating;

[0014] If the humidity difference is less than the humidity lower limit, the valve openings of the water vapor exhaust valve and the drain valve are controlled to be fully open, and the heating power of the heater is controlled to be a preset maximum power;

[0015] If the humidity difference is greater than or equal to the humidity lower limit and less than or equal to the humidity upper limit, a PID algorithm is used to control the heating power of the heater;

[0016] If the heating power reaches the maximum power and is maintained for a preset time, the valve openings of the water vapor exhaust valve and the drain valve are controlled to gradually reach full opening.

[0017] In one of the optional technical solutions, the hydrogen peroxide decomposition reactor is further provided with a temperature sensor for detecting the reactor temperature of the hydrogen peroxide decomposition reactor and a condenser for cooling the hydrogen peroxide decomposition reactor, and the controller controls the heater and the condenser according to the reactor temperature.

[0018] In one of the optional technical solutions, the controller is also used for:

[0019] If the temperature of the reactor exceeds a preset first temperature threshold, controlling the heater to stop heating;

[0020] If the temperature of the reactor exceeds a preset second temperature threshold, the heater is controlled to stop heating, and the water vapor exhaust valve and the drain valve are closed, and the second temperature threshold is greater than the first temperature threshold;

[0021] If the reactor temperature exceeds a preset third temperature threshold, the condenser is controlled to open, and the third temperature threshold is greater than the second temperature threshold.

[0022] In one of the optional technical solutions, the hydrogen peroxide decomposition reactor is also provided with a pressure exhaust valve and a pressure sensor for detecting the reactor pressure of the hydrogen peroxide decomposition reactor, and the controller controls the pressure exhaust valve to open when the reactor pressure exceeds a preset pressure threshold.

[0023] In one of the optional technical solutions, the water vapor exhaust pipe is provided with a pH sensor for detecting the pH value of the water vapor, and the controller controls the water vapor exhaust valve to close when the pH value of the water vapor is acidic.

[0024] The technical solution of the present invention also provides a control method of the indoor humidity control device as described above, comprising:

[0025] Acquiring the indoor humidity;

[0026] Calculating the humidity difference between the indoor humidity and a preset humidity threshold;

[0027] Controlling the reactor operation state of the hydrogen peroxide decomposition reactor and the water vapor exhaust valve according to the humidity difference;

[0028] If the reactor operation state is in the startup state, the hydrogen peroxide decomposition reactor generates water vapor;

[0029] If the operation state of the reactor is in a stopped state, the hydrogen peroxide decomposition reactor stops generating water vapor.

[0030] In one of the optional technical solutions, the step of controlling the reactor operating state of the hydrogen peroxide decomposition reactor and the water vapor exhaust valve according to the humidity difference includes:

[0031] If the humidity difference exceeds a preset difference threshold, the operation state of the reactor is controlled to be the startup state, and the water vapor exhaust valve is opened, so that the water vapor enters the chamber;

[0032] If the humidity difference does not exceed the difference threshold, the operating state of the reactor is controlled to be the stop state, and the water vapor exhaust valve is closed, and the water vapor stops entering the room.

[0033] The above technical solution has the following beneficial effects: through the hydrogen peroxide decomposition reactor, the controller, and the water vapor exhaust pipe connected to the room, the hydrogen peroxide decomposition reactor is provided with a water vapor exhaust port, the water vapor exhaust port is connected to the water vapor exhaust pipe, an oxygen isolation member is provided at the water vapor exhaust port, and the water vapor exhaust pipe is provided with a water vapor exhaust valve connected to the controller in communication, the controller controls the hydrogen peroxide decomposition reactor to start or stop the decomposition reaction according to the humidity difference between the received indoor humidity and the preset humidity threshold, so as to realize automatic humidification of the room by using hydrogen peroxide, with low cost and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0035] Figure 1 A schematic structural diagram of an indoor humidity control device provided by an embodiment of the present invention;

[0036] Figure 2 A flowchart of a control method for an indoor humidity control device provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0037] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0038] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a variety of structural modes and implementation modes that can be replaced by those skilled in the art can be replaced with each other. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction to the technical solution of the invention.

[0039] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0040] The indoor humidity control device provided by the present invention is mainly used in a ground source heat pump system.

[0041] like Figure 1As shown, an indoor humidity control device provided by an embodiment of the present invention includes a hydrogen peroxide decomposition reactor 10, a controller, and a water vapor exhaust pipe 20 connected to the indoor room. The hydrogen peroxide decomposition reactor 10 is provided with a water vapor exhaust port, which is connected to the water vapor exhaust pipe 20. An oxygen isolation member is provided at the water vapor exhaust port. The water vapor exhaust pipe 20 is provided with a water vapor exhaust valve 21 which is communicatively connected to the controller. The controller controls the reactor operation state of the hydrogen peroxide decomposition reactor 10 and the water vapor exhaust valve according to the humidity difference between the received indoor humidity and a preset humidity threshold.

[0042] If the reactor operation state is in the startup state, the hydrogen peroxide decomposition reactor 10 generates water vapor;

[0043] If the reactor operation state is in the stopped state, the hydrogen peroxide decomposition reactor 10 stops generating water vapor.

[0044] The indoor humidity control device provided in this embodiment mainly includes a hydrogen peroxide decomposition reactor 10 , a controller and a water vapor exhaust pipe 20 .

[0045] The hydrogen peroxide decomposition reactor 10 is used to perform a chemical decomposition reaction on hydrogen peroxide to generate water vapor and oxygen. The hydrogen peroxide decomposition reactor 10 is provided with a water vapor exhaust port, and an oxygen isolation member is provided at the water vapor exhaust port to isolate oxygen and prevent oxygen from entering the room. Hydrogen peroxide uses low-concentration medical-grade hydrogen peroxide. The specific structure and working principle of the hydrogen peroxide decomposition reactor 10 do not belong to the improvement points of the present application. Its specific structure and working principle can adopt the hydrogen peroxide decomposition reactor of the prior art, which will not be described in detail here.

[0046] One end of the water vapor exhaust pipe 20 is connected to the hydrogen peroxide decomposition reactor 10, and the other end of the water vapor exhaust pipe 20 is connected to the room. The water vapor exhaust pipe 20 is provided with a water vapor exhaust valve 21. The water vapor exhaust pipe 20 is used to transport the water vapor generated by the hydrogen peroxide decomposition reactor 10 to the room, thereby humidifying the room. Among them, the water vapor exhaust pipe 20 can be connected to the existing fresh air system, ground source heat pump system, etc., so as to be connected to the room. When the water vapor exhaust pipe 20 is connected to multiple rooms, at least one water vapor exhaust valve 21 can be set on each water vapor exhaust pipe connected to the room.

[0047] The controller obtains the indoor humidity of the room in real time. The controller controls the reactor operation state of the hydrogen peroxide decomposition reactor 10 and the water vapor exhaust valve 21 according to the humidity difference between the indoor humidity and the humidity threshold. For example, when the controller determines that the humidity difference exceeds the preset difference threshold, it indicates that the indoor humidity is low, and controls the hydrogen peroxide decomposition reactor 10 to start, so that the hydrogen peroxide decomposition reactor 10 undergoes a chemical decomposition reaction to generate water vapor. At the same time, the controller controls the water vapor exhaust valve 21 to open, so that the water vapor flows into the room through the water vapor exhaust pipe 20, so as to humidify the room.

[0048] Among them, the oxygen isolation member is preferably an oxygen isolation membrane.

[0049] Among them, the indoor humidity can be obtained by using a humidity sensor, and the humidity sensor can be set in a fresh air system or a ground source heat pump system.

[0050] The humidity threshold can be set according to user needs. For example, the weather in the north tends to be dry, so the humidity threshold can be set higher; while the weather in the south is humid, so the humidity threshold can be set lower.

[0051] Wherein, the controller is preferably a programmable logic controller (PLC).

[0052] In this embodiment, a hydrogen peroxide decomposition reactor, a controller, and a water vapor exhaust pipe connected to the room are provided. The hydrogen peroxide decomposition reactor is provided with a water vapor exhaust port, which is connected to the water vapor exhaust pipe. An oxygen isolating member is provided at the water vapor exhaust port. The water vapor exhaust pipe is provided with a water vapor exhaust valve which is communicatively connected to the controller. The controller controls the hydrogen peroxide decomposition reactor to start or stop the decomposition reaction according to the humidity difference between the received indoor humidity and a preset humidity threshold, thereby realizing automatic humidification of the room by using hydrogen peroxide, which has low cost and high safety.

[0053] In one embodiment, the controller is further configured to:

[0054] If the humidity difference exceeds the humidity threshold, the reactor operation state is controlled to be the start state, and the water vapor exhaust valve 21 is opened, and water vapor enters the room;

[0055] If the humidity difference does not exceed the humidity threshold, the reactor is controlled to be in a stopped state, and the water vapor exhaust valve 21 is closed, so that water vapor stops entering the room.

[0056] After receiving the indoor humidity, the controller determines whether the humidity difference between the indoor humidity and the humidity threshold exceeds a preset difference threshold. If so, the hydrogen peroxide decomposition reactor 10 is controlled to start, and the reactor operation state is in the start state, so that the hydrogen peroxide decomposition reactor 10 undergoes a chemical decomposition reaction to generate water vapor, and the water vapor exhaust valve 21 is opened at the same time to allow the water vapor to enter the room; otherwise, the hydrogen peroxide decomposition reactor 10 and the water vapor exhaust valve 21 are closed, and the reactor operation state is in the stop state, so that the hydrogen peroxide decomposition reactor 10 does not generate water vapor, and the water vapor stops entering the room, thereby realizing automatic control of the indoor humidity.

[0057] In one embodiment, a catalyst and a hydrogen peroxide storage tank 11 for storing hydrogen peroxide are provided in the hydrogen peroxide decomposition reactor 10, a drain valve 12 is provided at the outlet of the hydrogen peroxide storage tank 11, a heater 13 for heating the hydrogen peroxide decomposition reactor 10 is provided at the bottom of the hydrogen peroxide decomposition reactor 10, and a controller controls the drain valve 12 and the heater 13 according to the humidity difference.

[0058] A hydrogen peroxide storage tank 11 is arranged at the top of the inner side of the hydrogen peroxide decomposition reactor 10, a drain pipe is arranged at the bottom of the hydrogen peroxide storage tank 11, and a drain valve 12 is arranged on the drain pipe. A catalyst, such as manganese dioxide, is arranged at the bottom of the inner side of the hydrogen peroxide decomposition reactor 10, and the catalyst is located below the drain valve 12. A heater 13 is arranged at the bottom of the outer side of the hydrogen peroxide decomposition reactor 10. When the controller determines that the humidity difference exceeds the difference threshold, the controller controls the heater 13 to turn on, heats the hydrogen peroxide decomposition reactor 10, and controls the drain valve 12 to turn on, so that the hydrogen peroxide stored in the hydrogen peroxide storage tank 11 is discharged to react chemically with the catalyst to generate water vapor and oxygen. When the controller determines that the humidity difference does not exceed the difference threshold, the controller controls the heater 13 and the drain valve 12 to close, so that the hydrogen peroxide does not react chemically with the catalyst, thereby realizing automatic control of indoor humidity.

[0059] In one embodiment, the humidity threshold includes an upper humidity limit and a lower humidity limit, and the controller is further configured to:

[0060] If the humidity difference is greater than the upper humidity limit, the water vapor exhaust valve 21 and the drain valve 12 are controlled to close, and the heater 13 stops heating;

[0061] If the humidity difference is less than the humidity lower limit, the valve openings of the water vapor exhaust valve 21 and the drain valve 12 are controlled to be fully open, and the heating power of the heater 13 is controlled to be the preset maximum power;

[0062] If the humidity difference is greater than or equal to the humidity lower limit and less than or equal to the humidity upper limit, the PID algorithm is used to control the heating power of the heater 13;

[0063] If the heating power reaches the maximum power and is maintained for a preset time, the valve openings of the water vapor exhaust valve 21 and the drain valve 12 are controlled to gradually reach full opening.

[0064] When the controller determines that the humidity difference is greater than the upper humidity limit, the heating of the hydrogen peroxide decomposition reactor 10 is stopped, the decomposition reaction is stopped, and the water vapor exhaust valve 21 and the drain valve 12 are closed. When the controller determines that the humidity difference is less than the lower humidity limit, the heating power of the heater 13 is controlled to reach the maximum power, so that the temperature of the hydrogen peroxide decomposition reactor 10 is rapidly increased, the decomposition reaction of the hydrogen peroxide decomposition reactor 10 is accelerated, and the valve opening of the water vapor exhaust valve 21 and the drain valve 12 is controlled to be fully opened to accelerate the flow of water vapor flow. When the controller determines that the humidity difference is greater than or equal to the lower humidity limit and less than or equal to the upper humidity limit, the heating power of the heater 13 is controlled by the PID algorithm according to the humidity difference, so that the heater 13 heats the hydrogen peroxide decomposition reactor 10 at a uniform speed until the heating power of the heater 13 reaches the maximum power and is maintained for a preset time (such as 15 minutes), and the valve opening of the water vapor exhaust valve 21 and the drain valve 12 is gradually increased until they are fully opened, so as to realize automatic control of indoor humidity.

[0065] In one embodiment, the hydrogen peroxide decomposition reactor 10 is further provided with a temperature sensor for detecting the reactor temperature of the hydrogen peroxide decomposition reactor 10 and a condenser for cooling the hydrogen peroxide decomposition reactor 10. The controller controls the heater 13 and the condenser according to the reactor temperature to prevent the hydrogen peroxide decomposition reactor from overheating and improve safety.

[0066] In one embodiment, the controller is further configured to:

[0067] If the reactor temperature exceeds a preset first temperature threshold, the heater 13 is controlled to stop heating;

[0068] If the reactor temperature exceeds a preset second temperature threshold, the heater 13 is controlled to stop heating, and the steam exhaust valve 21 and the drain valve 12 are closed, and the second temperature threshold is greater than the first temperature threshold;

[0069] If the reactor temperature exceeds a preset third temperature threshold, the condenser is controlled to open, and the third temperature threshold is greater than the second temperature threshold.

[0070] The controller obtains the reactor temperature of the hydrogen peroxide decomposition reactor 10 in real time. When the controller determines that the reactor temperature exceeds a first temperature threshold, the controller heater 13 stops heating, and the reaction heat of the hydrogen peroxide decomposition reactor 10 is used for maintenance, thereby saving energy and reducing costs. When the controller determines that the reactor temperature exceeds a second temperature threshold, the decomposition reaction is stopped, and the water vapor exhaust valve 21 and the drain valve 12 are closed. When the controller determines that the reactor temperature exceeds a third temperature threshold, indicating that the reactor temperature is overheated, the controller controls the condenser to open, and the hydrogen peroxide decomposition reactor 10 is cooled to prevent the hydrogen peroxide decomposition reactor 10 from overheating and causing a safety accident, thereby improving safety.

[0071] The first temperature threshold, the second temperature threshold and the third temperature threshold can be set according to user needs. Preferably, the first temperature threshold is 75°C, the second temperature threshold is 80°C, and the third temperature threshold is 90°C.

[0072] In one embodiment, the hydrogen peroxide decomposition reactor 10 is further provided with a pressure exhaust valve and a pressure sensor for detecting the reactor pressure of the hydrogen peroxide decomposition reactor 10. When the reactor pressure exceeds a preset pressure threshold, the controller controls the pressure exhaust valve to open to prevent the hydrogen peroxide decomposition reactor 10 from being over-pressurized, thereby further improving safety.

[0073] In one of the embodiments, a pH sensor for detecting the pH of the water vapor is provided on the water vapor exhaust pipe 20, and the controller controls the water vapor exhaust valve 21 to close when the pH of the water vapor is acidic.

[0074] The pH sensor is used to detect the pH of water vapor. When the pH of the water vapor is acidic, the controller controls the water vapor exhaust valve 21 to close to prevent acidic water vapor from entering the room, further improving safety. Until the pH of the water vapor is neutral, the water vapor exhaust valve 21 is restored to continue humidifying the room.

[0075] The technical solution of the present invention also provides a control method of the indoor humidity control device as described above, comprising:

[0076] Step S201: Obtain indoor humidity;

[0077] Step S202: Calculate the humidity difference between the indoor humidity and a preset humidity threshold;

[0078] Step S203: controlling the reactor operation state and the water vapor exhaust valve of the hydrogen peroxide decomposition reactor according to the humidity difference; if the reactor operation state is in the start state, the hydrogen peroxide decomposition reactor generates water vapor; if the reactor operation state is in the stop state, the hydrogen peroxide decomposition reactor stops generating water vapor.

[0079] Specifically, when the fresh air system or the ground source heat pump system is turned on, the controller executes step S201 to obtain the indoor humidity in real time, then executes step S202 to calculate the humidity difference between the indoor humidity and a preset humidity threshold, and finally executes step S203 to control the reactor operation state and the water vapor exhaust valve of the hydrogen peroxide decomposition reactor according to the humidity difference. For example, when the controller determines that the humidity difference exceeds the preset difference threshold, it indicates that the indoor humidity is low, and controls the hydrogen peroxide decomposition reactor to start, so that the hydrogen peroxide decomposition reactor undergoes a chemical decomposition reaction to generate water vapor. At the same time, the controller controls the water vapor exhaust valve to open, so that the water vapor flows into the room through the water vapor exhaust pipe, thereby humidifying the room.

[0080] In this embodiment, by obtaining the indoor humidity and calculating the humidity difference between the indoor humidity and a preset humidity threshold, the hydrogen peroxide decomposition reactor is controlled to start or stop the decomposition reaction according to the humidity difference, thereby realizing automatic humidification of the room with hydrogen peroxide, which has low cost and high safety.

[0081] In one embodiment, step S203 includes:

[0082] If the humidity difference exceeds the humidity threshold, the operation state of the reactor is controlled to be a start state, and the water vapor exhaust valve is opened, and water vapor enters the chamber;

[0083] If the humidity difference does not exceed the humidity threshold, the reactor operation state is controlled to be stopped, and the water vapor exhaust valve is closed, and water vapor stops entering the room.

[0084] Specifically, after receiving the indoor humidity, the controller determines whether the humidity difference between the indoor humidity and the humidity threshold exceeds a preset difference threshold. If so, the hydrogen peroxide decomposition reactor is controlled to start, the reactor operation state is in the start state, the hydrogen peroxide decomposition reactor undergoes a chemical decomposition reaction to generate water vapor, and the water vapor exhaust valve is opened at the same time to allow the water vapor to enter the room; otherwise, the hydrogen peroxide decomposition reactor and the water vapor exhaust valve are closed, the reactor operation state is in the stop state, the hydrogen peroxide decomposition reactor does not generate water vapor, and the water vapor stops entering the room, thereby achieving automatic control of the indoor humidity.

[0085] In one embodiment, the humidity threshold value includes an upper humidity limit and a lower humidity limit, and the method of controlling the reactor operation state and the water vapor exhaust valve of the hydrogen peroxide decomposition reactor according to the humidity difference includes:

[0086] If the humidity difference is greater than the upper humidity limit, the water vapor exhaust valve and drain valve are controlled to close, and the heater stops heating;

[0087] If the humidity difference is less than the humidity lower limit, the valve openings of the water vapor exhaust valve and the drain valve are controlled to be fully open, and the heating power of the heater is controlled to be the preset maximum power;

[0088] If the humidity difference is greater than or equal to the lower humidity limit and less than or equal to the upper humidity limit, the PID algorithm is used to control the heating power of the heater;

[0089] If the heating power reaches the maximum power and is maintained for a preset time, the valve openings of the water vapor exhaust valve and the drain valve are controlled to gradually reach full opening.

[0090] When the controller determines that the humidity difference is greater than the upper humidity limit, the heating of the hydrogen peroxide decomposition reactor is stopped, the decomposition reaction is stopped, and the water vapor exhaust valve and the drain valve are closed. When the controller determines that the humidity difference is less than the lower humidity limit, the heating power of the heater is controlled to reach the maximum power, so that the temperature of the hydrogen peroxide decomposition reactor is rapidly increased, the decomposition reaction of the hydrogen peroxide decomposition reactor is accelerated, and the valve opening of the water vapor exhaust valve and the drain valve is controlled to be fully opened to accelerate the flow of water vapor flow. When the controller determines that the humidity difference is greater than or equal to the lower humidity limit and less than or equal to the upper humidity limit, the PID algorithm is used to control the heating power of the heater according to the humidity difference, so that the heater heats the hydrogen peroxide decomposition reactor at a uniform speed until the heating power of the heater reaches the maximum power and is maintained for a preset time (such as 15 minutes), and the valve opening of the water vapor exhaust valve and the drain valve is gradually increased until it is fully opened, so as to realize automatic control of indoor humidity.

[0091] In one embodiment, the method of controlling the reactor operating state and the water vapor exhaust valve of the hydrogen peroxide decomposition reactor according to the humidity difference includes:

[0092] obtaining a reactor temperature of a hydrogen peroxide decomposition reactor;

[0093] The heater and condenser are controlled according to the reactor temperature and a preset temperature threshold.

[0094] Specifically, the controller obtains the reactor temperature of the hydrogen peroxide decomposition reactor in real time. When the reactor temperature exceeds the temperature threshold, the heater is controlled to stop heating, and the condenser is controlled to start. The hydrogen peroxide decomposition reactor is cooled by the condenser to prevent the hydrogen peroxide decomposition reactor from overheating and improve safety.

[0095] In one embodiment, the method of controlling the reactor operating state and the water vapor exhaust valve of the hydrogen peroxide decomposition reactor according to the humidity difference includes:

[0096] If the temperature of the reactor exceeds a preset first temperature threshold, controlling the heater to stop heating;

[0097] If the reactor temperature exceeds a preset second temperature threshold, the heater is controlled to stop heating, and the steam exhaust valve and the drain valve are closed, and the second temperature threshold is greater than the first temperature threshold;

[0098] If the reactor temperature exceeds a preset third temperature threshold, the condenser is controlled to open, and the third temperature threshold is greater than the second temperature threshold.

[0099] Specifically, the controller acquires the reactor temperature of the hydrogen peroxide decomposition reactor in real time. When the controller determines that the reactor temperature exceeds a first temperature threshold, the controller heater stops heating, and the reaction heat of the hydrogen peroxide decomposition reactor is used for maintenance, thereby saving energy and reducing costs. When the controller determines that the reactor temperature exceeds a second temperature threshold, the decomposition reaction is stopped, and a water vapor exhaust valve and a drain valve are closed. When the controller determines that the reactor temperature exceeds a third temperature threshold, indicating that the reactor temperature is overheated, the controller controls the condenser to open, cools the hydrogen peroxide decomposition reactor, prevents the hydrogen peroxide decomposition reactor from overheating and causing a safety accident, and improves safety.

[0100] The first temperature threshold, the second temperature threshold and the third temperature threshold can be set according to user needs. Preferably, the first temperature threshold is 75°C, the second temperature threshold is 80°C, and the third temperature threshold is 90°C.

[0101] In one embodiment, the method of controlling the reactor operating state and the water vapor exhaust valve of the hydrogen peroxide decomposition reactor according to the humidity difference includes:

[0102] obtaining a reactor pressure of a hydrogen peroxide decomposition reactor;

[0103] The pressure exhaust valve is controlled according to the reactor pressure and a preset pressure threshold.

[0104] Specifically, the controller obtains the reactor pressure of the hydrogen peroxide decomposition reactor in real time. When the reactor pressure exceeds the pressure threshold, the pressure exhaust valve is controlled to open, and the pressure of the hydrogen peroxide decomposition reactor is relieved through the pressure exhaust valve to prevent the hydrogen peroxide decomposition reactor from being over-pressurized, thereby further improving safety.

[0105] In one embodiment, the method of controlling the reactor operating state and the water vapor exhaust valve of the hydrogen peroxide decomposition reactor according to the humidity difference includes:

[0106] Get the water vapor pH of water vapor;

[0107] Control the steam exhaust valve according to the pH value of the steam.

[0108] Specifically, the controller obtains the pH value of water vapor in real time. When the pH value of water vapor is acidic, the controller controls the water vapor exhaust valve to close to prevent acidic water vapor from entering the room, further improving safety. Until the pH value of water vapor is neutral, the water vapor exhaust valve is restored to continue humidifying the room.

[0109] The above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, rather than to limit them. Although the embodiments of the present invention are described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An indoor humidity control device, characterized in that: It comprises a hydrogen peroxide decomposition reactor, a controller, and a water vapor exhaust pipe connected to a room, wherein the hydrogen peroxide decomposition reactor is provided with a water vapor exhaust port, the water vapor exhaust port is connected to the water vapor exhaust pipe, an oxygen isolating member is provided at the water vapor exhaust port, the water vapor exhaust pipe is provided with a water vapor exhaust valve connected to the controller in communication, and the controller controls the reactor operation state of the hydrogen peroxide decomposition reactor and the water vapor exhaust valve according to the humidity difference between the received indoor humidity in the room and a preset humidity threshold; If the reactor operation state is in the startup state, the hydrogen peroxide decomposition reactor generates water vapor; If the operation state of the reactor is in a stopped state, the hydrogen peroxide decomposition reactor stops generating water vapor.

2. The indoor humidity control device according to claim 1, characterized in that: The controller is also used for: If the humidity difference exceeds a preset difference threshold, the operation state of the reactor is controlled to be the startup state, and the water vapor exhaust valve is opened, so that the water vapor enters the room; If the humidity difference does not exceed the difference threshold, the operating state of the reactor is controlled to be the stop state, and the water vapor exhaust valve is closed, and the water vapor stops entering the room.

3. The indoor humidity control device according to claim 1 or 2, characterized in that: The hydrogen peroxide decomposition reactor is provided with a catalyst and a hydrogen peroxide storage tank for storing hydrogen peroxide, the outlet of the hydrogen peroxide storage tank is provided with a drain valve, the bottom of the hydrogen peroxide decomposition reactor is provided with a heater for heating the hydrogen peroxide decomposition reactor, and the controller controls the drain valve and the heater according to the humidity difference.

4. The indoor humidity control device according to claim 3, characterized in that: The humidity threshold value includes an upper humidity limit value and a lower humidity limit value, and the controller is further used for: If the humidity difference is greater than the humidity upper limit, the water vapor exhaust valve and the drain valve are controlled to close, and the heater stops heating; If the humidity difference is less than the humidity lower limit, the valve openings of the water vapor exhaust valve and the drain valve are controlled to be fully open, and the heating power of the heater is controlled to be a preset maximum power; If the humidity difference is greater than or equal to the humidity lower limit and less than or equal to the humidity upper limit, a PID algorithm is used to control the heating power of the heater; If the heating power reaches the maximum power and is maintained for a preset time, the valve openings of the water vapor exhaust valve and the drain valve are controlled to gradually reach full opening.

5. The indoor humidity control device according to claim 3, characterized in that: The hydrogen peroxide decomposition reactor is also provided with a temperature sensor for detecting the reactor temperature of the hydrogen peroxide decomposition reactor and a condenser for cooling the hydrogen peroxide decomposition reactor. The controller controls the heater and the condenser according to the reactor temperature.

6. The indoor humidity control device according to claim 5, characterized in that: The controller is also used for: If the temperature of the reactor exceeds a preset first temperature threshold, controlling the heater to stop heating; If the temperature of the reactor exceeds a preset second temperature threshold, the heater is controlled to stop heating, and the water vapor exhaust valve and the drain valve are closed, and the second temperature threshold is greater than the first temperature threshold; If the reactor temperature exceeds a preset third temperature threshold, the condenser is controlled to open, and the third temperature threshold is greater than the second temperature threshold.

7. The indoor humidity control device according to claim 3, characterized in that: The hydrogen peroxide decomposition reactor is also provided with a pressure exhaust valve and a pressure sensor for detecting the reactor pressure of the hydrogen peroxide decomposition reactor. The controller controls the pressure exhaust valve to open when the reactor pressure exceeds a preset pressure threshold.

8. The indoor humidity control device according to claim 3, characterized in that: The water vapor exhaust pipe is provided with a pH sensor for detecting the pH value of the water vapor, and the controller controls the water vapor exhaust valve to close when the pH value of the water vapor is acidic.

9. A control method for an indoor humidity control device according to any one of claims 1 to 8, characterized in that: include: Acquiring the indoor humidity; Calculating the humidity difference between the indoor humidity and a preset humidity threshold; Controlling the reactor operation state of the hydrogen peroxide decomposition reactor and the water vapor exhaust valve according to the humidity difference; If the reactor operation state is in the startup state, the hydrogen peroxide decomposition reactor generates water vapor; If the operation state of the reactor is in a stopped state, the hydrogen peroxide decomposition reactor stops generating water vapor.

10. The control method according to claim 9, characterized in that: The method of controlling the reactor operating state of the hydrogen peroxide decomposition reactor and the water vapor exhaust valve according to the humidity difference comprises: If the humidity difference exceeds a preset difference threshold, the operation state of the reactor is controlled to be the startup state, and the water vapor exhaust valve is opened, so that the water vapor enters the room; If the humidity difference does not exceed the difference threshold, the operating state of the reactor is controlled to be the stop state, and the water vapor exhaust valve is closed, and the water vapor stops entering the room.

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