CN109974249A

CN109974249A - Control method, humidifier and the air-conditioning system of humidifier

Info

Publication number: CN109974249A
Application number: CN201910277378.9A
Authority: CN
Inventors: 李健锋; 阮涛; 罗羽钊; 廖海防
Original assignee: Midea Group Co Ltd; Guangdong Midea HVAC Equipment Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea HVAC Equipment Co Ltd
Priority date: 2019-04-08
Filing date: 2019-04-08
Publication date: 2019-07-05

Abstract

The invention discloses a kind of control method of humidifier, humidifier and air-conditioning systems.Humidifier includes: Work container, heating member, drain valve and timer, Work container has discharge outlet and gas outlet, heating member is for the water in heating work container, drain valve is used to control the switch of discharge outlet, timer is for the state timing to heating member, humidifier is at least after following condition is all satisfied, and control drain valve is opened: drain valve is currently in off state；Total accumulated running time of heating member is at least the first setting time T1；The current closed state of heating member at least continues the second setting time T2.The control method of humidifier according to an embodiment of the present invention will not influence humidification function when humidifying unit has humidification work requirements；When not having humidification demand, operation of the humidifier according to heating member, idle time select opportune moment forced drainage, guarantee that impurities in water is maintained at lower content, to improve the cleannes that humidifier uses.

Description

Control method of humidifier, humidifier and air conditioning system

Technical Field

The invention relates to the technical field of air conditioning equipment, in particular to a control method of a humidifier, the humidifier and an air conditioning system.

Background

When the weather is dry, the relative humidity of indoor and outdoor air is low, and some users choose to set a humidifier indoors to solve the problem. General humidifier is after heating water into water vapor, because chloride ion and the calcium ion of aquatic can't be taken away to steam, the chloride ion and the calcium ion concentration of long-term operation back water tank the inside can be higher and higher, corrode the water tank, cause the incrustation scale simultaneously to pile up.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a control method of a humidifier, which can forcibly discharge sewage in a working container for containing water.

The invention also provides a humidifier adopting the control method.

The invention also provides an air conditioning system with the humidifier.

According to the control method of the humidifier provided by the embodiment of the invention, the humidifier comprises the following steps: work container, heating member, drain valve and time-recorder, work container has outlet and gas outlet, the heating member is used for the heating water in the work container, the drain valve is used for control the switch in outlet, the time-recorder is used for right the state timing of heating member, the humidifier is all satisfied the back at following condition at least, control the drain valve is opened: the drain valve is in a closed state at present; the total accumulated running time of the heating elements is at least a first set time T1; the heating element current off state continues for at least a second set time T2; if the drain valve is never opened after the humidifier is used, timing from the first time when the heating element is started, and the sum of the running time of each time of the heating element in the current state is the total accumulated running time; and if the drain valve is opened at least once, timing from the last time when the drain valve is closed, and setting the sum of the running time of the heating element each time in the current state as the total accumulated running time.

According to the control method of the humidifier, when the humidification unit has humidification work requirements, the humidification function is not influenced; when the humidification requirement is not met, the humidifier selects a proper time to forcibly drain water according to the running and shutdown time of the heating element, so that the impurities in the water are kept at a low content, and the use cleanliness of the humidifier is improved.

In some embodiments, when the amount of water in the working container exceeds a set amount of water, the working container is in an overflow state; the humidifier controls the drain valve to be opened and the conditions are required to be met: the current water quantity in the working container is less than the set water quantity.

Specifically, the drain valve is closed after being opened for a third set time T3.

In some embodiments, the humidifier includes a plurality of the working containers, each of the working containers corresponds to the respective heating element and the drain valve, and the drain valves of the working containers are independently controlled.

In some embodiments, a plurality of heating elements are provided corresponding to one working container, and when it is detected that the drain valve satisfies the opening condition, the sum of the accumulated operation times of all the heating elements of one working container is used as a total accumulated operation time.

In some embodiments, a plurality of heating elements are correspondingly arranged in one working container, and when the drain valve is detected to meet the opening condition, the current closing state of each heating element is required to last for at least a second set time T2; wherein the second set times T2 for a plurality of the heating elements are equal or unequal.

In some embodiments, the work container has a water replenishing port, and the humidifier includes a water replenishing valve for controlling the opening and closing of the water replenishing port, and the water replenishing valve is opened after the water discharging valve is drained and closed.

According to the humidifier of the embodiment of the invention, the humidifier further comprises: the casing, the casing passes through top hoist and mount installation, the work container is established in the casing the back is opened to the drain valve, the water in the work container only flows through gravity the humidifier.

According to the humidifier disclosed by the embodiment of the invention, sewage containing high-concentration impurities in the humidifier can be discharged in time, so that elements are prevented from being corroded, and the work of the elements is prevented from being influenced. Even if the impurities are taken away when the steam is sprayed out, the content of the impurities sprayed into the room is very low, and the influence on the human health is not great.

In some embodiments, the working container is a metal container, and the heating member is a PTC heater.

An air conditioning system according to an embodiment of the present invention includes: the humidifier comprises an indoor unit, an outdoor unit and the humidifier of the embodiment, wherein an air outlet of the humidifier is connected with the indoor unit.

According to the air conditioning system provided by the embodiment of the invention, the indoor air humidity is more uniformly and comfortably regulated, and the cleanliness of moisture can be improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a humidifier according to an embodiment.

Fig. 2 is a schematic structural diagram of a humidifier according to an embodiment.

Fig. 3 is a logic diagram for draining water from the humidifier according to one embodiment.

Fig. 4 is a timing logic diagram for one embodiment of a humidifier.

Reference numerals: the humidifier 100, the shell 1, the bottom cover 12, the working container 2, the water outlet 21, the air outlet 22, the water replenishing port 23, the heating element 3, the water discharging valve 4, the timer 5, the water replenishing valve 6, the water storage tank 7 and the controller 8.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

A humidifier 100 according to an embodiment of the present invention is described below with reference to fig. 1 and 2.

According to the humidifier 100 of the embodiment of the present invention, as shown in fig. 2, the humidifier 100 includes: the humidifier comprises a work container 2, a heating part 3, a drain valve 4 and a timer 5, wherein the work container 2 is provided with a water outlet 21 and an air outlet 22, the heating part 3 is used for heating water in the work container 2, the drain valve 4 is used for controlling the opening and closing of the water outlet 21, the timer 5 is used for timing the state of the heating part 3, and after the humidifier 100 meets a certain condition, the drain valve 4 is opened to enable the water in the work container 2 to be discharged.

It can be understood that, during the long-term operation of the humidifier 100, the water inside the work container 2 is heated and evaporated into steam by the heating member 3 for a long time. Because the impurities such as chloride ions and calcium ions in the water are difficult to be taken away by the steam, the concentration of the impurities is higher and higher after long-term accumulation, the working container 2 can be corroded, other detection elements in the working container 2 can also be corroded, and the operation reliability of the humidifier 100 is influenced. Impurities carried in the water are easy to scale in the working container 2, and the thicker the scale layer is, the more difficult the scale layer is to remove. In addition, the steam in the working container 2 is inevitably wrapped with water mist carrying impurities when being discharged, and when the impurity content in water is too high, the sprayed water mist can also influence the health of people.

In order to solve this problem, in the humidifier 100 according to the embodiment of the present invention, the work container 2 includes the drain port 21 and the drain valve 4 for controlling opening and closing of the drain port 21, and the timer 5 is provided so that the humidifier 100 can open the drain valve 4 at an appropriate timing when the impurity concentration in the work container 2 is too high. Therefore, sewage containing high-concentration impurities in the humidifier 100 can be discharged in time, elements are prevented from being corroded, and the work of the elements is prevented from being influenced. In addition, because the impurities such as chloride ions and calcium ions in the working container 2 can be maintained at a low concentration level by forced drainage, even if the impurities are carried away when steam is sprayed, the content of the impurities sprayed into the room is very low, and the impurities have little influence on the health of human bodies.

Optionally, the working container 2 is a metal container, and the metal container has higher structural rigidity and strength, and the wall thickness of the metal container is smaller under the same strength requirement. In addition, the metal container has long service life and is easy to ensure the sealing performance. Of course, in the embodiment of the present invention, the working container 2 is not made of plastic, composite material, or other materials.

Specifically, the humidifier 100 adopts a steam humidification mode as the humidification mode of the heating element 3, converts electric energy into heat energy by using the heating element 3, and water contained in the working container 2 absorbs the heat energy to generate steam which is transmitted to the room through a transmission pipeline, so that the moisture content of the indoor air is improved.

In the embodiment of the present invention, the type of the heating member 3 may be variously selected, and the heating member 3 may be a PTC heater, a thick film, an electric heating tube, an electrode heating member, an infrared heating member, or the like. Further alternatively, a plurality of heating members 3 may be provided in the humidifier 100, and the same type of heating member 3 may be used in the humidifier 100, or a plurality of types of heating members 3 may be used in combination.

In one embodiment, the working container 2 is a metal container, and the heating member 3 is a PTC heater. Therefore, the metal container can still ensure good characteristics after being heated for a long time, does not cause embrittlement, softening and the like along with time and temperature change, and has long service life and high reliability. And adopt PTC heating element heating, the thermal resistance is little, heat exchange efficiency is high, and its security is very high moreover compared with other types of heating member 3, even dry combustion also is difficult for leading to the circumstances such as the fire.

In the embodiment of the present invention, there are various installation methods and connection methods of the humidifier 100 and a water source, and thus there are various water replenishing and draining methods for the humidifier 100.

In some embodiments, the humidifier 100 is mounted low, the humidifier 100 may be mounted on a wall, or the humidifier 100 may be portable and may be placed on the floor, table, etc. In other embodiments, the humidifier 100 further comprises a housing 1, the housing 1 is mounted by top-lifting, and the working vessel 2 is disposed within the housing 1. The installation mode of hoist and mount can practice thrift the subaerial area occupied of humidifier 100 on the one hand, make full use of house upper portion space, on the other hand humidifier 100 can make full use of the height advantage when outwards exporting steam, makes steam can long-distance transport.

The humidifier 100 can be replenished by manual water replenishing, for example, when the humidifier 100 is installed at a lower position, people can directly fill water into the working container 2. The humidifier 100 may be replenished with water automatically, for example, a water storage tank 7 is provided in the humidifier 100, and sufficient water is stored in the water storage tank 7. The working container 2 is provided with a water replenishing port 23, the water replenishing port 23 is connected with the water storage tank 7, and the working container 2 can replenish water from the water storage tank 7.

In some embodiments, as shown in fig. 2, the humidifier 100 includes a water replenishing valve 6 for controlling the opening and closing of the water replenishing port 23, after the water discharging valve 4 discharges water and is closed, the water replenishing valve 6 is opened, and a liquid level difference exists between the water storage tank 7 and the working container 2, so that water in the water storage tank 7 can automatically flow into the working container 2. Or the water replenishing port 23 is connected with a water replenishing pump (not shown), and the water replenishing pump can pump water into the working container 2 from the water storage tank 7 or directly from an external water source after the working container 2 is forcibly emptied of water. Thus, after the forced drainage, fresh and clean water can be supplemented at a proper time, so that impurities such as chloride ions, calcium ions and the like in the water in the working container 2 are kept at a relatively low level, and scale accumulation is prevented. The water replenishing valve 6 is adopted to replenish water, and automatic control of water replenishing is realized.

In an alternative embodiment, the humidifier 100 is connected to the water purifier, so that the water supplied to the humidifier 100 is purified by the water purifier, which can greatly prolong the forced drainage period of the humidifier 100.

In another alternative embodiment, the humidifier 100 is connected to a tap water faucet, which is turned on when the humidifier 100 requires water replenishment, so that municipal water pressure can be used to pump water into the humidifier 100, reducing the use of a water replenishment pump.

In some embodiments, the humidifier 100 is provided with a drain pipe connected to the drain port 21, the lower end of the drain pipe may be connected to a waste water tank, or the lower end of the drain pipe is directly led to a toilet or a sink, after the drain valve 4 is opened, the water in the working container 2 can flow out of the humidifier 100 only by gravity, and the drain mode of the humidifier 100 is simple.

In some embodiments, as shown in fig. 1, the humidifier 100 includes a plurality of working vessels 2, each working vessel 2 has a respective heating element 3 and drain valve 4, and the drain valve 4 of each working vessel 2 is independently controlled. That is, each work container 2 and the corresponding heating member 3 constitute a humidifying unit having its own drain valve 4, and the drain valve 4 is controlled to open when it satisfies the drain condition by itself. When each humidifying unit determines whether to discharge water, the working states of other humidifying units do not need to be considered, and water does not need to be discharged simultaneously by other humidifying units. By the arrangement, the drainage of each humidifying unit is very flexible, and the humidifying and drainage time of each humidifying unit is more conveniently adjusted. The situation that no humidification unit is available when the humidifier 100 needs humidification due to the fact that all humidification units are arranged and compensated at the same time is avoided.

Specifically, when the humidifier 100 includes one or more humidification cells, one or more heating members 3 are provided in each work container 2. When a plurality of heating members 3 are provided in the work container 2, it is necessary to consider the case of the plurality of heating members 3 in consideration of the problem of water discharge.

The structure of the humidifier 100 in one embodiment is described below with reference to fig. 1-2.

The humidifier 100 includes: the humidifying device comprises a shell 1, a water storage tank 7 and a plurality of humidifying units, wherein the water storage tank 7 and the plurality of humidifying units are all positioned in the shell 1. Each humidifying unit comprises a working container 2, a heating element 3, a drain valve 4 and a water replenishing valve 6, wherein the heating element 3 of each humidifying unit can be one or more and is used for heating water in the working container 2 to evaporate the water into steam. Each work container 2 has a water replenishing port 23, a water discharge port 21, and an air outlet 22, and a drain valve 4 is provided at the water discharge port 21 for controlling opening and closing of the water discharge port 21. The water replenishing port 23 is connected with the water storage tank 7, and the water replenishing valve 6 is arranged at the water replenishing port 23 and used for controlling the opening and closing of the water replenishing port 23.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Wherein, humidifier 100 hangs up on the roof of kitchen or bathroom, and casing 1 internals all connects on the lateral wall or the roof of casing 1, and especially storage water tank 7 and working vessel 2 all connect on the roof of casing 1. The housing 1 has a bottom cover 12, and the bottom cover 12 is a detachable cover body, thereby facilitating the cover removal and maintenance from below.

The water storage tank 7 is connected with a water tap through a water inlet pipe, and when the water storage tank 7 needs to add water, the water tap is opened. The drain port 21 is connected to a sink or a sanitary bath through a drain pipe, and the water discharged from the humidifier 100 automatically flows into the sink or a toilet by gravity.

Wherein, each working container 2 is connected with the water storage tank 7 through a U-shaped pipe, the U-shaped pipe is connected with a water supplementing valve 6, and when the water supplementing valve 6 is opened, water in the water storage tank 7 automatically flows into the working container 2.

Advantageously, a one-way valve is connected to the U-shaped pipe to prevent the steam and water in the working container 2 from flowing back into the water storage tank 7.

An air conditioning system according to an embodiment of the present invention includes: indoor unit, outdoor unit and the humidifier 100 of the above-mentioned embodiment, the air outlet 22 of the humidifier 100 is connected with the indoor unit, and the structure of the humidifier 100 is not described herein again. In the present embodiment, the humidifier 100 is used in combination with an indoor unit of an air conditioner, and the humidifier 100 constitutes a part of an air conditioning system, which can humidify indoor air even in a process of raising or lowering an indoor temperature.

It can be understood that, when a general air conditioner is used, the indoor unit can only change the temperature of indoor air, and cannot increase the humidity of the air, that is, there is no humidification effect, which may cause a user to obviously feel that the indoor air is dry, which affects comfort. In order to solve the problem, most users choose to purchase one humidifier on the basis of using one air conditioner, so that extra expenditure is caused, the humidification range of the independent humidifier is limited, the humidification effect is uneven, and the uniform temperature and humidity environment is difficult to form.

In the embodiment of the invention, the humidifier 100 is combined with the traditional air conditioner, and the steam generated by the humidifier 100 is mixed with the air blown out by the indoor unit, so that the expenditure of separate humidifying equipment is reduced.

Here, the outlet 22 of the humidifier 100 may send the steam to the room through a separate duct, and the steam is further blown off by the indoor unit while blowing the air. Or the air outlet 22 of the heater is connected with the indoor unit, and the steam is blown out through the air supply outlet of the indoor unit, so that the steam can be mixed with the outlet air of the indoor unit and then blown out, the humidifying effect can be increased, and a uniform and comfortable warm and humid environment can be created.

According to the air conditioning system disclosed by the embodiment of the invention, the humidifier 100 is integrated into the air conditioner, and the humidifier 100 has a forced drainage function, so that the impurity content in steam blown out by the humidifier 100 is lower, and the comfort and the health of the use of the air conditioning system are improved.

In the air conditioning system according to the embodiment of the present invention, the configurations of the indoor unit and the outdoor unit, such as the compressor, the condenser, the evaporator, and the like, and the operations thereof are well known to those skilled in the art and will not be described in detail herein.

According to the humidifier 100 of the embodiment of the invention, the humidifier 100 controls the drain valve 4 to be opened at least after the following conditions are met:

the first condition is as follows: the drain valve 4 is currently in a closed state;

and a second condition: the total accumulated operating time of the heating elements 3 is at least the first set time T1;

and (3) carrying out a third condition: the current off state of the heating member 3 lasts at least for the second set time T2.

That is, the humidifier 100 considers that the drain valve 4 is opened when it detects that the above three conditions are satisfied. In an actual product, according to actual needs, the humidifier 100 may set other additional conditions, and the drain valve 4 is opened until the above three conditions and the additional other conditions are all satisfied, where the additional conditions are not limited. The features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

The first condition means that the drain valve 4 is currently in a closed state, and the drain valve 4 is switched to an open state after other conditions are met.

The second condition is that the sum of the time periods during which the heating member 3 is in the operating state is at least the first set time T1, and the drain valve 4 is switched to the open state only when the other conditions are satisfied. The total accumulated running time here is considered in two cases: if the drain valve 4 is never opened after the humidifier 100 is used, timing is carried out from the first time the heating element 3 is opened, and the sum of the running time of each time of the heating element 3 in the current state is the total accumulated running time; if the drain valve 4 has been opened at least once, the sum of the time length from the last time when the drain valve 4 is closed to each time when the heating member 3 is operated in the current state is the total accumulated operation time.

The third condition means that the heating element 3 is currently in the closed state, and the closing time lasts at least for the second set time T2, and the drain valve 4 is switched to the open state after the other conditions are met.

Here, the timer 5 of the humidifier 100 has a multiple timing function, and counts not only the time when the heating member 3 is in operation but also the time when the heating member 3 is in the off state. The timer 5 may count the total accumulated operation time of the heating element 3 once every time the heating element 3 is turned on, and then transmit the operation time to the controller 8 of the humidifier 100 when the heating element 3 is turned off, and the controller 8 sums up all the operation times up to now from the start of the time counting, and clears the timer 5 for counting the operation time after each time the heating element 3 is turned off. Or, the timer 5 starts to count time from the starting point of timing, the timer 5 for counting the running time is suspended after the heating element 3 is turned off every time, and the timer 5 continues to count time after the heating element 3 is turned on next time until the timer 5 is cleared when the drain valve 4 is opened.

The setting of the second condition here indicates that the working container 2 has been heated up cumulatively for a sufficient time from the timing point, and as the heating time is longer, the impurities which cannot be evaporated in the water are accumulated more, and thus the impurities need to be discharged in time. And the setting of the third condition shows that the heating element 3 is not started for a long time at present, namely the heating element 3 is in an idle state, and the drain valve 4 is opened after the condition is met, so that the influence of drainage on the normal humidification requirement can be avoided.

Here so do not adopt concentration detection spare to control forced drainage, promptly when concentration detection spare detects aquatic impurity content and discharge water again when exceeding standard because concentration detection spare's detection precision is not high, and the dirt layer on concentration detection spare surface can influence the detection precision in addition after long-term the use, leads to drain valve 4 switch frequent. According to the scheme of the embodiment of the invention, the control logic is more reasonable, and the frequent switching and drainage of the drainage valve 4 are avoided, so that the influence on the normal function of the humidifier 100 is avoided.

According to the control method of the humidifier 100 provided by the embodiment of the invention, when the humidification unit has a humidification work requirement, the humidification function is not affected; when the humidification requirement is not met, the humidifier 100 selects a proper time to forcibly drain water according to the running and shutdown time of the heating element 3, so that the impurity content in water is kept low, and the using cleanliness of the humidifier 100 is improved.

In some embodiments, when the amount of water in the working container 2 exceeds a set amount of water, the working container 2 is in an overflow state; the humidifier 100 controls the drain valve 4 to be opened and further satisfies the following conditions: the current water amount in the working container 2 is smaller than the set water amount, that is, the overflow flag bit of the working container 2 is OFF. This avoids the overflow of water caused by excessive water in the working container 2.

Specifically, the drain valve 4 is opened for the third set time T3 and then closed. The drainage time is set to be as long as the third set time T3, so that the sufficient drainage time is ensured, and the drained sewage is utilized. In addition, the reason why the drain valve 4 is closed after the third set time T3 is opened, rather than being closed before the heating element 3 is opened next time, is to allow sufficient time for water replenishment, and the heating element 3 can immediately heat the gas when necessary.

In some embodiments, a plurality of heating elements 3 are provided for one working container 2, and the sum of the accumulated operation times of all the heating elements 3 of one working container 2 is used as the total accumulated operation time when the drain valve 4 is detected to satisfy the opening condition. For example, when only one heating element 3 is operated at a time, the operating time of only that heating element 3 is counted as the total accumulated operating time; when two heating elements 3 are operated at the same time, the total accumulated operating time is counted by multiplying the operating time of a single heating element 3 by two. This is because multiple times of steam are generated when a plurality of heating members 3 are simultaneously heated at the same time, and correspondingly, multiple times of impurities are accumulated in the water remaining in the working container 2. Therefore, the timing mode of the total accumulated running time is set, and the time for draining sewage can be more accurately mastered.

Of course, in some embodiments, the number of times the heating members 3 are operated in total accumulated operation time is adjusted according to the relationship between the number of heating members 3 heated at the same time and the amount of steam generated. That is, when the total accumulated operating time is counted, the operating time of the individual heating members 3 is multiplied by the number of the operating heating members 3 and then by a factor which varies with the number of the heating members 3. For example, when there is one heating member 3 to be heated at the same time, the coefficient is 1, and only the operating time of the heating member 3 is counted as the total accumulated operating time; when two heating members 3 are simultaneously heated, the coefficient is 0.9, and the running time of a single heating member 3 is multiplied by 2 and then multiplied by 0.9 to account for the total accumulated running time; when there are three heating members 3 heated simultaneously, the coefficient is 0.8, and the total accumulated operating time is counted by multiplying the operating time of the individual heating members 3 by 3 and then by multiplying by 0.8. It should be noted that the selection of the coefficients is adjusted by actual needs, and is not limited herein.

In some embodiments, to reduce the timing effort, the total accumulated operating time is counted as the operating time of only one of the heating elements 3, regardless of whether the heating elements are operated simultaneously.

In some embodiments, a plurality of heating elements 3 are correspondingly arranged in one working container 2, and when the drain valve 4 is detected to meet the opening condition, the current closing state of each heating element 3 is required to last for at least a second set time T2; wherein the second set times T2 corresponding to the plurality of heating members 3 are equal or different. Therefore, when one working container 2 is drained, all the corresponding heating elements 3 are in a closed state, and the phenomenon of dry burning is avoided.

Referring to fig. 3 and 4, a method of forced drainage control of the humidifier 100 in one embodiment is described.

As shown in fig. 2, two PTC heaters, PTCA and PTCB, are provided in each working container 2, and a drain valve 4 for draining water is provided at the bottom of the working container 2. The total required cumulative operating time of the two PTC heating elements is T1, the off-state duration time required for PTCA is T21, and the off-state duration time required for PTCB is T22, which are calculated by the timer 5. Specific timing and clearing conditions are shown in fig. 3 and 4.

Here, it is assumed that T1 is 500 hours, T21 is 30 minutes and T3 is 3 minutes. The controller 8 of the humidifier 100 is provided with a forced drainage flag and an overflow flag for each humidification cell, and the factory default value of the forced drainage flag of the humidification cell is OFF. When the forced drainage flag is OFF, the controller 8 detects the drainage completion signal, the count result of the timer 5, and the overflow flag, and when the drainage completion signal is OFF, the total integrated operating time of the two PTC heating elements is 500 hours or more, the duration of PTCA OFF is 30 minutes, the duration of PTCB OFF is 30 minutes, and the overflow flag is OFF, the drain valve 4 is opened, and the forced drainage flag is turned ON. When the forced water discharge flag is ON for 3 minutes, that is, the water discharge valve 4 continues to discharge water for 3 minutes, the water discharge valve 4 is closed, and the forced water discharge flag is turned OFF.

The "Timer 1" Timer is used to count the total accumulated run time. In the timing process, when the system is powered ON or the forced drainage flag bit is turned ON, the Timer1 is reset to zero. After the Timer "Timer 1" is reset to zero, the Timer starts to count when three conditions "Timer 1" are met. One condition is that the system is in a standby state or a power-on state; the other condition is that the forced drainage flag bit is OFF; the third condition is that at least one of PTCA and PTCB is ON.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A method of controlling a humidifier, the humidifier comprising: work container, heating member, drain valve and time-recorder, work container has outlet and gas outlet, the heating member is used for the heating water in the work container, the drain valve is used for control the switch in outlet, the time-recorder is used for right the state timing of heating member, the humidifier is all satisfied the back at following condition at least, control the drain valve is opened:

the drain valve is in a closed state at present;

the total accumulated running time of the heating elements is at least a first set time T1;

the heating element current off state continues for at least a second set time T2; wherein,

if the drain valve is never opened after the humidifier is used, timing from the first time when the heating element is started, and setting the sum of the running time of each time of the heating element in the current state as the total accumulated running time; and if the drain valve is opened at least once, timing from the last time when the drain valve is closed, and setting the sum of the running time of the heating element each time in the current state as the total accumulated running time.

2. The control method of a humidifier according to claim 1, wherein when the amount of water in the work container exceeds a set amount of water, the work container is in an overflow state; the humidifier controls the drain valve to be opened and the conditions are required to be met: the current water quantity in the working container is less than the set water quantity.

3. The control method of the humidifier according to claim 1, wherein the drain valve is closed after being opened for a third set time T3.

4. The method of controlling a humidifier according to claim 1, wherein the humidifier includes a plurality of the working vessels, each of the working vessels corresponding to the respective heating element and the drain valve, and the drain valves of each of the working vessels are independently controlled.

5. The control method of a humidifier according to claim 1, wherein a plurality of heating elements are provided for one working vessel, and when it is detected that the drain valve satisfies the opening condition, a sum of accumulated operating times of all the heating elements of one working vessel is taken as a total accumulated operating time.

6. The control method of a humidifier according to claim 1, wherein a plurality of said heating elements are provided for one said working container, and when it is detected that said drain valve satisfies an opening condition, it is required that a current closed state of each of said heating elements is continued for at least a second set time T2; wherein the second set times T2 for a plurality of the heating elements are equal or unequal.

7. The method of controlling a humidifier according to any one of claims 1-6, wherein the work container has a water replenishment opening, and the humidifier includes a water replenishment valve for controlling opening and closing of the water replenishment opening, and the water replenishment valve is opened after the water discharge valve is drained and closed.

8. The humidifier adopting the control method according to any one of claims 1 to 7, further comprising: the casing, the casing passes through top hoist and mount installation, the work container is established in the casing the back is opened to the drain valve, the water in the work container only flows through gravity the humidifier.

9. The humidifier according to claim 8, wherein the work container is a metal container, and the heating member is a PTC heater.

10. An air conditioning system, comprising: indoor unit, outdoor unit and humidifier according to any one of claims 8-9, the humidifier outlet is connected to the indoor unit.