CN117267817A - Dehumidifier and dehumidification control method of dehumidifier - Google Patents

Abstract

The invention discloses a dehumidifier and a dehumidification control method of the dehumidifier, wherein after the whole dehumidifier operates, the current weight of a water collection tank and the water level monitoring state monitored by a water level switch are obtained; calculating the weight ratio of the current weight to the preset water full weight; when the weight ratio is not greater than a preset first weight threshold value and the water level monitoring state is a water full state, outputting a normally closed fault alarm prompt of the water level switch; when the weight ratio is not greater than the first weight threshold and the water level monitoring state is a non-water full state, monitoring the current environment temperature and the current environment humidity; and matching corresponding operation parameters in a preset instruction matching library according to the weight ratio, the current environment temperature and the current environment humidity, and controlling the dehumidifier to operate according to the operation parameters. The scheme can realize abnormal monitoring of the water level switch, ensure normal operation of the dehumidifier and accurately realize dehumidification control of the dehumidifier by combining the ambient temperature, the ambient humidity and the weight ratio.

Description

Dehumidifier and dehumidification control method of dehumidifier

Technical Field

The invention relates to the technical field of dehumidifiers, in particular to a dehumidifier and a dehumidification control method of the dehumidifier.

Background

As a common household appliance, the dehumidifier pumps moist air into the dehumidifier through a fan, and the moist air passes through a heat exchanger, at the moment, moisture in the air condenses into water drops, and the treated dry air is discharged out of the dehumidifier, so that the indoor humidity is reduced by circulation. When the dehumidifier works, collected water is led into a water tank of the dehumidifier, the water level in the water tank is detected through a water level switch arranged in the water tank, and when the water level reaches a preset height, the water level switch is closed, so that the whole dehumidifier stops running. However, in the long-term use process of the dehumidifier, a water level switch positioned at the upper part of the water tank can be shocked or water stain to cause abnormal closing or poor contact, and when the water level switch cannot be normally closed, the water level switch can cause that the dehumidifier cannot stop for alarming when more water exists in the water tank, so that water in the water tank overflows; when the water level switch is in poor contact, misjudgment of the water level switch can occur, and abnormal shutdown protection is caused. Therefore, the normal operation of the dehumidifier is seriously affected due to the abnormal operation of the water level switch.

Disclosure of Invention

The embodiment of the invention aims to provide a dehumidifier and a dehumidification control method of the dehumidifier, which are used for monitoring whether a water level switch of the dehumidifier fails or not and guaranteeing the normal operation of the dehumidifier.

An embodiment of the present invention provides a dehumidifier including:

a refrigerant circuit in which a refrigerant circulates through a compressor, a condenser, an expansion valve, an evaporator, and the like in this order in a refrigeration cycle;

the water collecting tank is used for collecting water generated when the evaporator works;

the water level switch is arranged at the upper part of the water collection tank and is used for monitoring the water level state of the water collection tank;

the temperature sensor is used for monitoring the current ambient temperature;

the humidity sensor is used for monitoring the current environment humidity;

a weight sensor for detecting the weight of the water collection tank;

the controller is electrically connected with the water level switch, the weight sensor, the temperature sensor and the humidity sensor;

the controller performs:

after the whole dehumidifier operates, acquiring the current weight of the water collection tank and the water level monitoring state monitored by the water level switch;

calculating the weight ratio of the current weight to the preset water full weight;

outputting a normally closed fault alarm prompt of the water level switch when the weight ratio is not greater than a preset first weight threshold and the water level monitoring state is a water full state;

When the weight ratio is not greater than the first weight threshold and the water level monitoring state is a non-water full state, monitoring the current environment temperature and the current environment humidity; and matching corresponding operation parameters in a preset instruction matching library according to the weight ratio, the current environment temperature and the current environment humidity, and controlling the dehumidifier to operate according to the operation parameters.

As a preferred aspect, the controller further performs:

and when the weight ratio is larger than the first weight threshold and the water level monitoring state is a water full state, controlling the whole dehumidifier to stop and outputting a water full prompt.

Preferably, the controller further performs:

when the weight ratio is larger than the first weight threshold, and the water level monitoring state is a non-water full state, the whole dehumidifier is controlled to stop, and the normally open fault alarm and the water full prompt of the water level switch are output.

As a preferred aspect, the controller further performs:

when the weight ratio is larger than a preset second specific gravity threshold and smaller than the first specific gravity threshold, the current ambient humidity is not larger than a preset first humidity threshold, and the current ambient temperature is smaller than a preset first temperature threshold, judging that the first running condition is met, controlling a compressor of the dehumidifier to run at a preset highest frequency, and controlling a fan of the dehumidifier to run at a preset highest rotating speed;

When the weight ratio is larger than the second specific gravity threshold and smaller than the first specific gravity threshold, the current ambient humidity is larger than a preset second humidity threshold, and the current ambient temperature is larger than a preset second temperature threshold, judging that the preset second operation condition is met, controlling a compressor of the dehumidifier to operate at a preset minimum frequency, and controlling a fan of the dehumidifier to operate at a preset minimum rotating speed;

when the weight ratio is larger than the second specific gravity threshold and smaller than the first specific gravity threshold and does not accord with the first running condition and the second running condition, controlling a compressor of the dehumidifier to run at a preset first frequency and controlling a fan of the dehumidifier to run at a preset first rotation speed;

the first humidity threshold is smaller than the second humidity threshold, the first temperature threshold is smaller than the second temperature threshold, and the second specific gravity threshold is not smaller than the first specific gravity threshold.

Further, the controller further performs:

and when the weight ratio is not greater than the second specific gravity threshold value, maintaining the dehumidifier to operate with the current operation parameters.

Preferably, the controller further performs:

Calculating the running frequency of a compressor of the dehumidifier and the rotating speed of a fan according to the weight ratio, the current ambient temperature and the current ambient humidity;

wherein the operating frequency f= (delta) _T T+δ _H H-δ _M )(f _max -f _min )+f _min The rotation speed v= (delta) _T T+δ _H H-δ _M )(v _max -v _min )+v _min ，δ _T And delta _H Respectively a temperature coefficient and a humidity coefficient, T and H are respectively the current ambient temperature and the current ambient humidity, delta _M Weight ratio, f _max And f _min The highest frequency and the lowest frequency of the compressors, v _max And v _min And respectively the highest rotating speed and the lowest rotating speed of the fans.

As a preferred aspect, the controller further performs:

after the dehumidifier is electrified, acquiring the current weight of the water collection tank and the water level monitoring state monitored by the water level switch;

calculating the weight ratio of the current weight to the preset water full weight;

when the water level monitoring state is a water full state and the calculated weight ratio is not more than a preset third specific gravity threshold, controlling the whole dehumidifier to stop, and outputting a normally closed fault alarm prompt of the water level switch;

when the water level monitoring state is a water full state and the calculated weight ratio is larger than the third specific gravity threshold, controlling the whole dehumidifier to stop, and outputting a water full prompt;

Wherein the third specific gravity threshold is not higher than the first specific gravity threshold.

Further, the controller further performs:

when the water level monitoring state is a non-water full state and the calculated weight ratio is larger than the third specific gravity threshold value, controlling the whole dehumidifier to stop, and outputting a normally-open fault alarm prompt of the water level switch;

and when the water level monitoring state is a non-water full state and the calculated weight ratio is not greater than the third specific gravity threshold value, displaying the current weight ratio.

As an improvement of the above, the controller further performs:

after the current weight ratio is displayed, starting to calculate the power-on time length, and monitoring whether a complete machine operation signal is received or not;

and when a complete machine operation signal is received or the calculated power-on time length is greater than a preset time length threshold value, controlling the complete machine of the dehumidifier to perform power-on operation.

The embodiment of the invention also provides a dehumidification control method of the dehumidifier, which comprises the following steps:

a refrigerant circuit in which a refrigerant circulates through a compressor, a condenser, an expansion valve, an evaporator, and the like in this order in a refrigeration cycle;

the water collecting tank is used for collecting water generated when the evaporator works;

the water level switch is arranged at the upper part of the water collection tank and is used for monitoring the water level state of the water collection tank;

The temperature sensor is used for monitoring the current ambient temperature;

the humidity sensor is used for monitoring the current environment humidity;

a weight sensor for detecting the weight of the water collection tank;

the controller is electrically connected with the water level switch, the weight sensor, the temperature sensor and the humidity sensor;

the method comprises the following steps:

after the whole dehumidifier operates, acquiring the current weight of the water collection tank and the water level monitoring state monitored by the water level switch;

calculating the weight ratio of the current weight to the preset water full weight;

outputting a normally closed fault alarm prompt of the water level switch when the weight ratio is not greater than a preset first weight threshold and the water level monitoring state is a water full state;

when the weight ratio is not greater than the first weight threshold and the water level monitoring state is a non-water full state, monitoring the current environment temperature and the current environment humidity; and matching corresponding operation parameters in a preset instruction matching library according to the weight ratio, the current environment temperature and the current environment humidity, and controlling the dehumidifier to operate according to the operation parameters.

Compared with the prior art, the dehumidifier and the dehumidification control method of the dehumidifier disclosed by the invention comprise the following steps: a refrigerant circuit in which a refrigerant circulates through a compressor, a condenser, an expansion valve, an evaporator, and the like in this order in a refrigeration cycle; the water collecting tank is used for collecting water generated when the evaporator works; the water level switch is arranged at the upper part of the water collection tank and is used for monitoring the water level state of the water collection tank; the temperature sensor is used for monitoring the current ambient temperature; the humidity sensor is used for monitoring the current environment humidity; a weight sensor for detecting the weight of the water collection tank; the controller is electrically connected with the water level switch, the weight sensor, the temperature sensor and the humidity sensor; the controller performs: after the whole dehumidifier operates, acquiring the current weight of the water collection tank and the water level monitoring state monitored by the water level switch; calculating the weight ratio of the current weight to the preset water full weight; outputting a normally closed fault alarm prompt of the water level switch when the weight ratio is not greater than a preset first weight threshold and the water level monitoring state is a water full state; when the weight ratio is not greater than the first weight threshold and the water level monitoring state is a non-water full state, monitoring the current environment temperature and the current environment humidity; and matching corresponding operation parameters in a preset instruction matching library according to the weight ratio, the current environment temperature and the current environment humidity, and controlling the dehumidifier to operate according to the operation parameters. The water quantity of the water collection tank can be accurately estimated by monitoring the weight of the water collection tank of the dehumidifier, the water level state monitored by the water level switch is corrected, abnormal monitoring of the water level switch is realized, and the normal operation of the dehumidifier is ensured. And controlling the dehumidifier to dehumidify according to the matched operation parameters, and accurately controlling the operation parameters of the compressor by combining the ambient temperature, the ambient humidity and the weight ratio to accurately realize the water-full protection control of the dehumidifier.

Drawings

FIG. 1 is a schematic view of a dehumidifier according to an embodiment of the present invention;

FIG. 2 is a schematic view of an internal structure of a dehumidifier according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the working principle of the internal dehumidification system of the dehumidifier according to the embodiment of the present invention;

FIG. 4 is a schematic view of a dehumidifier according to an embodiment of the present invention in another implementation;

FIG. 5 is a flow chart of the work performed by the controller in an embodiment of the invention;

FIG. 6 is a schematic diagram of a control flow executed by the controller according to the first embodiment of the present invention;

FIG. 7 is a schematic flow chart of the second embodiment of the operation performed by the controller according to the present invention;

FIG. 8 is a schematic flow chart of the third embodiment of the operation performed by the controller according to the present invention;

FIG. 9 is a schematic diagram of a control flow executed by the controller according to the fourth embodiment of the present invention;

fig. 10 is a schematic diagram of a control flow executed by the controller according to the present invention and operated in the fifth embodiment.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Referring to fig. 1, which is a schematic view of an external appearance of a dehumidifier provided by an embodiment of the present invention in an implementation manner, the embodiment of the present invention provides a dehumidifier 100, and the dehumidifier 100 provided by the embodiment of the present invention includes: the water collection tank 6 is detachably mounted on the shell 101, and the shell can be formed by a combination of a plurality of components. Referring to fig. 2, which is a schematic diagram of an internal structure of a dehumidifier according to an embodiment of the present invention, an air inlet portion 11, that is, an air inlet grid, is configured on a back shell 3 of a shell of the dehumidifier, and a plurality of air inlets are formed to suck air through the air inlets; an air outlet portion 8 (air outlet grille) is provided on the top of the housing 101, wherein the air outlet portion includes a plurality of air outlets, and air dehumidified inside the dehumidifier 100 can be discharged to the outside through the air outlet portion 8.

The working principle of the dehumidifier is as follows: the indoor air is dehumidified by condensing (cooling the air to remove moisture using a technique similar to a refrigerator). The dehumidifier 100 may include a dehumidification system disposed inside the housing, referring to fig. 3, which is a schematic diagram of an operation principle of the dehumidification system provided in an embodiment of the present disclosure, where the dehumidifier 100 includes a compressor 110, an evaporator 120, a condenser 130, a fan 140, a water pan 150, an expansion valve 160, and a water collecting tank. The compressor 110, the evaporator 120, the expansion valve 160, and the condenser 130 are connected in this order by piping to constitute a refrigerant circuit in which a refrigerant circulates. The condenser 130 and the evaporator 120 are provided with a plurality of fins for exchanging heat between the refrigerant and air. The compressor is for compressing a refrigerant, and the compressor 110 compresses the refrigerant sucked from the evaporator 120 and discharges the compressed refrigerant to the condenser 130. The expansion valve 160 reduces the pressure of the refrigerant flowing from the condenser 130 to the evaporator 120, and expands the refrigerant. The condenser 130 exchanges heat between the dry air and the refrigerant, thereby heating the air evaporator 120 and exchanges heat between the air sucked from the space to be dehumidified and the refrigerant, thereby cooling the air. In the dehumidifier 100, the condenser 130 functions as a reheater.

The dehumidifier 100 may suck air through the air inlet 11, dehumidify the inside, and then discharge the air through the air outlet 8 on the upper surface. The condenser 130 may be located between the evaporator 120 and the fan 140 in the air flow direction, and the condenser 130 may be disposed at an upper side of the water tray 150 in a manner to be opposite to the evaporator 120. In the condenser 130, the refrigerant compressed from the compressor 110 may be condensed by heat exchange with the air passing through the evaporator 120. In the evaporator 120, the refrigerant expanded by the expansion mechanism may be evaporated by heat exchange with air, and the evaporator 120 may be positioned behind the condenser 130 in the air flow direction, and the evaporator 120 may be disposed at an upper side of the water tray 150. The condensed water produced in the operation process of the dehumidification system drops onto the water receiving disc 150 to be gathered, and the water receiving disc 150 discharges the condensed water into the water collecting tank 6. The water collection tank 6 may be provided at one side of the cabinet in a drawing manner for receiving condensed water flowing out of the drain port to prevent the condensed water from dripping to the floor or chassis of the cabinet. When the water collection tank 6 is filled with condensed water, the user can take the water collection tank 6 out of the housing to empty the water collection tank 6, and then insert the water collection tank 6 back into the housing for installation.

As another embodiment, the housing may have an external through hole for placing the drain pipe 10, and the housing may include a hole cover positioned at the external through hole for shielding the external through hole 7 from the entry of foreign matters such as dust and hair. When the drain pipe 10 is connected to the dehumidifier 100, the hole cover may be detached from the housing or the hole cover may be opened to expose the outer through-hole 7, and a user may insert the drain pipe 10 into the outer through-hole 7, and the drain pipe 10 may be connected to the water collection tank 6 of the dehumidifier 100. A water pump can be arranged between the drain pipe 10 and the water collection tank 6, and water can be pumped out when the water collection tank 6 is full of water by pumping water through the water pump.

In the implementation of this embodiment, referring to fig. 4, a schematic structural diagram of a dehumidifier in another implementation of the embodiment of the present invention, where the dehumidifier 100 includes: a dehumidification system 201, a water collection tank 6, a water level switch 601, a temperature sensor 180, a humidity sensor 190, a weight sensor 200, and a controller 202;

the water collection tank 6 is used for collecting condensed water generated when the dehumidification system 201 of the dehumidifier works; the water level switch 601 is arranged at a preset position at the upper part of the water collection tank 6 and is used for monitoring the water level state of the water collection tank; the temperature sensor 180 is used to monitor the current ambient temperature; the humidity sensor 190 is used to monitor the current ambient humidity; the controller 202 is used for performing dehumidifier water-full protection control.

The weight sensor 200 is used to detect the weight of the water collection tank, and the amount of water in the water collection tank can be calculated by comparing the weight of the water collection tank with the empty weight of the water collection tank in the empty state.

The weight sensor is typically converted to an electrical output by a combination of spring elements and strain gages. Among the various types of load cells, different models and styles can be distinguished in two key ways: (1) the weight sensors are classified into tension-compression load cells, tension load cells and other measurement types by their methods for detecting weight; the weight sensor is classified into a hydraulic load cell, a piezoelectric load cell, and various other configurations according to the type of output signal. Any type of load cell is always designed to operate in the direction of gravity. The weight sensor used in this embodiment may be any one, and is aimed at converting the weight of the entire water collection tank into an electrical signal to be output.

Weight sensors are distributed below the water collection tank, and the weight of the water collection tank is detected by adopting tension-compression weighing sensors distributed below the water collection tank.

In addition, in order to provide the weighing accuracy in the water collection tank, the influence of vibration on weighing is avoided, and a plurality of weight sensors can be uniformly or unevenly distributed below the water collection tank.

The water level switch 601 may be a sensor for detecting a water level, and may accurately detect a water level, and output a corresponding water-full state signal to the controller when the water level reaches a preset water-full level.

The water level switch 601 may also be designed as a combination of a float and a micro switch, for detecting whether the water stored in the water collection tank 6 reaches a full condition, where the water level switch is disposed at the upper portion of the water collection tank 6, and includes a float and a micro switch, where the float is composed of a float and a touch rod, and floats on the water surface of the condensed water in the water collection tank, and when the water level in the water collection tank is low, the float is at a lower position, and the micro switch is turned off. When the water level in the water collecting tank reaches a certain height, namely after the preset water full height, the buoy gradually rises along with the rising of the water level, and the touch rod enables the micro switch to be closed, and a water full signal is output.

In the embodiment of the present invention, referring to fig. 5, which is a schematic flow chart of a work performed by a controller in the embodiment of the present invention, the controller 202 can perform a control operation of water-full protection of a dehumidifier in response to a preset dehumidification control instruction, and specifically includes steps S1 to S4:

s1, after the whole dehumidifier operates, acquiring the current weight of the water collection tank and the water level monitoring state monitored by the water level switch;

S2, calculating the weight ratio of the current weight to the preset water full weight;

s3, outputting a normally closed fault alarm prompt of the water level switch when the weight ratio is not greater than a preset first weight threshold and the water level monitoring state is a water full state;

s4, when the weight ratio is not greater than the first weight threshold value and the water level monitoring state is a non-water full state, monitoring the current environment temperature and the current environment humidity; and matching corresponding operation parameters in a preset instruction matching library according to the weight ratio, the current environment temperature and the current environment humidity, and controlling the dehumidifier to operate according to the operation parameters.

In the specific execution of the water-full protection control of the controller 202, referring to fig. 6, a schematic diagram of a control flow executed by the controller according to the first embodiment of the present invention is shown, and the controller executes the following steps.

Step S601, the compressor is powered on.

Step S602, obtaining the current weight M of the water collection tank and a water level monitoring state monitored by a water level switch.

Step S603, calculating the weight ratio delta _M I.e. calculate the current weight M and the water full weight M of the water collection tank _F Ratio of delta _M ＝M/M _F 。

The water full weight is a water collection tank weight value of the water tank under the water level of the normal trigger water level switch, and the accuracy of the water full weight is increased by detecting and averaging for multiple times.

Step S604, judging the weight ratio delta _M Whether or not more than 110% is established, i.e. by determining the weight ratio delta _M Whether or not it is greater than a first weight threshold delta ₁ Determining whether the water collection tank reaches a water full state.

In this embodiment, 110% is used as the first weight threshold, and in other embodiments, the first weight threshold may be set to other values close to 100%.

The first weight threshold is set to 110% to make the water level exceed the critical state of the full water condition, so as to avoid being affected by vibration of the machine body and avoid erroneous judgment.

If not, go to step S605.

Step S605 determines whether the water level monitoring state is a water full state. When the water collection tank is detected to be in a water full state through the weight ratio, the water level monitoring state monitored by the water level switch is judged, and then the fault of the water level switch can be monitored.

If yes, go to step S606;

if not, go to step S607;

And step S606, outputting a normally closed fault alarm prompt of the water level switch. When the water tank is detected through the weight ratio and the water level monitoring state is not in a water full state, the water level monitoring fault is judged at the moment, the normally closed fault of the water level switch is output, the user can stop and overhaul in time, and then the normally closed fault of the water level switch can be detected.

Step S607, obtaining the current ambient temperature T _Ring(s) Current ambient humidity H _Ring(s) 。

Step S608, matching corresponding operation parameters, that is, when the water tank is not in a water full state as detected by the weight ratio, and the water level monitoring state monitored by the water level switch is not in a water full state, matching corresponding operation parameters in a preset command matching library according to the weight ratio, the current environmental temperature and the current environmental humidity.

And step S609, controlling the dehumidifier to operate according to the operation parameters.

The water quantity of the water collection tank can be accurately estimated by monitoring the weight of the water collection tank of the dehumidifier, the water level state monitored by the water level switch is corrected, abnormal monitoring of the water level switch is realized, and the normal operation of the dehumidifier is ensured. And controlling the dehumidifier to dehumidify according to the matched operation parameters, and accurately controlling the operation parameters of the compressor by combining the ambient temperature, the ambient humidity and the weight ratio to accurately realize the dehumidification control of the dehumidifier.

In a further embodiment provided by the present invention, the controller is further configured to perform the steps of:

the controller also performs:

and when the weight ratio is larger than the first weight threshold and the water level monitoring state is a water full state, controlling the whole dehumidifier to stop and outputting a water full prompt.

In the implementation of this embodiment, referring to fig. 7, a schematic flow chart of the second embodiment of the present invention is shown, where the controller further performs the following steps;

step S701, the compressor is powered on.

Step S702, the current weight M of the water collection tank and the water level monitoring state monitored by a water level switch are obtained.

Step S703, calculating the weight ratio delta _M I.e. calculate the current weight M and the water full weight M of the water collection tank _F Ratio of delta _M ＝M/M _F 。

The water full weight is a water collection tank weight value of the water tank under the water level of the normal trigger water level switch, and the accuracy of the water full weight is increased by detecting and averaging for multiple times.

Step S704, judging the weight ratio delta _M Whether or not more than 100% is established, i.e. by determining the weight ratio delta _M Whether or not it is greater than a first weight threshold delta ₁ Determining whether the water collection tank reaches a water full state.

If yes, go to step S705.

Step S705, determining whether the water level monitoring state is a water full state. When the water collection tank reaches a water full state through weight ratio detection, the water level monitoring state monitored by the water level switch is judged, and then the fault of the water level switch can be monitored.

If yes, go to step S706;

and step S706, controlling the whole dehumidifier to stop and outputting a water full prompt. When the water tank reaches a water full state through weight ratio detection, the water level monitoring state monitored by the water level switch is the water full state, and the water level switch is judged to be normally monitored at the moment, and the water full state is reached at the moment, the dehumidifier compressor is controlled to stop, and a water full prompt is output so that a user can finish the corresponding water tank clean water work.

The water quantity of the water collection tank can be accurately estimated by monitoring the weight of the water collection tank of the dehumidifier, and the water level state monitored by the water level switch is corrected, so that the normal operation of the dehumidifier is ensured. When the dehumidifier is full of water, the water full shutdown protection is carried out, and the water full overflow is avoided.

In yet another embodiment provided by the present invention, the controller further performs:

when the weight ratio is larger than the first weight threshold, and the water level monitoring state is a non-water full state, the whole dehumidifier is controlled to stop, and the normally open fault alarm and the water full prompt of the water level switch are output.

In the embodiment, in step S705, if the controller determines that the water level monitoring state is the water full state, step S707 is executed if not;

and step S707, controlling the whole dehumidifier to stop, and outputting the normally open fault alarm and the water full prompt of the water level switch. When the water tank is in a full state according to the operation time, the water level switch monitors that the water tank is in a non-full state, and the whole dehumidifier is controlled to stop and a full water prompt is output. At this time, the water level of the water collecting tank is full, but at this time, the water level switch does not detect the water full state, the water level switch has a normally open fault, the water tank cannot be normally closed in the water full state, and the normally open fault alarm of the water level switch is output.

And correcting the water level monitoring state through the water level calculation state, outputting a corresponding prompt when the water level switch is in a normally open fault, reminding a user of removing the fault, and ensuring the stable operation of the dehumidifier.

In yet another embodiment provided by the present invention, the controller further performs:

when the weight ratio is larger than a preset second specific gravity threshold and smaller than the first specific gravity threshold, the current ambient humidity is not larger than a preset first humidity threshold, and the current ambient temperature is smaller than a preset first temperature threshold, judging that the first running condition is met, controlling a compressor of the dehumidifier to run at a preset highest frequency, and controlling a fan of the dehumidifier to run at a preset highest rotating speed;

When the weight ratio is larger than the second specific gravity threshold and smaller than the first specific gravity threshold, the current ambient humidity is larger than a preset second humidity threshold, and the current ambient temperature is larger than a preset second temperature threshold, judging that the preset second operation condition is met, controlling a compressor of the dehumidifier to operate at a preset minimum frequency, and controlling a fan of the dehumidifier to operate at a preset minimum rotating speed;

when the weight ratio is larger than the second specific gravity threshold and smaller than the first specific gravity threshold and does not accord with the first running condition and the second running condition, controlling a compressor of the dehumidifier to run at a preset first frequency and controlling a fan of the dehumidifier to run at a preset first rotation speed;

the first humidity threshold is smaller than the second humidity threshold, the first temperature threshold is smaller than the second temperature threshold, and the second specific gravity threshold is not smaller than the first specific gravity threshold.

In the implementation of this embodiment, referring to fig. 8, a schematic flow chart of the operation performed by the controller in the third embodiment provided by the present invention is shown, and in the implementation step S608, the dehumidifier is controlled to operate by matching with corresponding operation parameters, which specifically includes the following steps;

Step S801, calculating weight ratio delta _M ；

Step S802, judging the weight ratio delta _M Whether or not it is (80%, 110%]Within the range, i.e. judge the weight ratio delta _M Whether or not it is greater than a preset second specific gravity threshold value delta ₂ And is less than a first weight threshold delta ₁ 。

In this embodiment, 110% is used as the first specific gravity threshold, and 80% is used as the second specific gravity threshold, which is not smaller than the first specific gravity threshold in other embodiments, and the first specific gravity threshold and the second specific gravity threshold may be set to other values.

If yes, go to step S803;

step S803, judge H _Ring(s) Whether or not to [0，40％]Within the range. Namely judging whether the current environmental humidity is not more than 40%;

in this embodiment, 40% is used as the first humidity threshold, and the specific implementation of this embodiment is described, and in other embodiments, the first humidity threshold may be set to other values.

If yes, go to step S804;

if not, executing step S806;

step S804, determining T _Ring(s) Whether in the range of 0, 20). I.e. judging whether the current ambient temperature is greater than a preset first temperature threshold.

In this embodiment, 20 ℃ is used as the first temperature threshold, and the specific implementation of this embodiment is described, and in other embodiments, the first temperature threshold may be set to other values.

If yes, go to step S805;

if not, executing step S809;

step S805, controlling the compressor to f _max Running, controlling fan to v _max Operating; when the first operation condition is met, namely when the weight ratio is larger than a preset second specific gravity threshold and smaller than the first specific gravity threshold, the current environment humidity is not larger than a preset first humidity threshold, and the current environment temperature is smaller than a preset first temperature threshold, the first operation condition is judged to be met, when the water collecting tank is close to a water full state and the indoor environment of the times is in a low-temperature low-humidity environment, the dehumidification effect is poor, the frequency of a press is required to be improved, the dehumidification capability is improved, and at the moment, the compressor of the dehumidifier is controlled to be at a preset highest frequency f _max Running, controlling a fan of the dehumidifier to rotate at a preset maximum rotation speed v _max And (5) running.

Step S806, judging H _Ring(s) Whether or not it is (75%, 100%]Within the range. I.e. judging whether the current environmental humidity is more than 75%;

in this embodiment, 75% is used as the second humidity threshold, and in other embodiments, the first humidity threshold is smaller than the second humidity threshold, and the second humidity threshold may be set to other values.

If yes, go to step S807;

if not, executing step S809;

step S807, determining T _Ring(s) Whether or not the process is performed at (30, + -infinity). I.e. judging whether the current ambient temperature is greater than a preset second temperature threshold.

In this embodiment, 30 ℃ is used as the second temperature threshold, and in other embodiments, the first temperature threshold is smaller than the second temperature threshold, and the second temperature threshold may be set to other values.

If yes, go to step S808;

if not, executing step S809;

step S808, controlling the compressor to f _min Running, controlling fan to v _min Operating; when the weight ratio is larger than the second specific gravity threshold and smaller than the first specific gravity threshold and the current environmental humidity is larger than a preset second humidity threshold and the current environmental temperature is larger than a preset second temperature threshold, the water collection tank is close to a water full state, the indoor environment is in a high-temperature and high-humidity environment, the dehumidification effect is good, the frequency of the press is required to be reduced, the dehumidification capability is reduced, the running time of the whole dehumidifier is prolonged as much as possible, the phenomenon that the whole dehumidifier is stopped quickly due to water full is avoided, and the compressor of the dehumidifier is controlled to be at a preset minimum frequency f _min Running, controlling a fan of the dehumidifier to rotate at a preset minimum rotation speed v _min And (5) running.

Step S808, controlling the compressor to f ₁ Running, controlling fan to v ₁ Running, i.e. weight ratio of (80%, 110%]When the first operating condition and the second operating condition are not met in the range, controlling the compressor of the dehumidifier to be at a preset first frequency f ₁ Running, controlling a fan of the dehumidifier to rotate at a preset first rotation speed v ₁ And (5) running.

According to the weight proportion, under the condition that the water collection tank is close to the water full state, the environment temperature and the environment humidity are combined to match corresponding operation parameters, so that certain dehumidification capacity of the dehumidifier is maintained, meanwhile, the working time of the dehumidifier is prolonged, and the dehumidifier is prevented from stopping when the water full state is very fast.

In yet another embodiment provided by the present invention, the controller further performs:

and when the weight ratio is not greater than the second specific gravity threshold, controlling the compressor of the dehumidifier to operate at a preset second frequency, and controlling the fan of the dehumidifier to operate at a preset second rotating speed.

In the embodiment, referring to fig. 8, in step S802, if δ is determined _M Not (80%, 110%)]In the range, that is, when the determination result in step S803 is no, the following steps are performed:

Step S810, judging the weight ratio delta _M Whether or not it is not more than 80%, i.e. judging the weight ratio delta _M Whether or not it is smaller than the second specific gravity threshold value delta ₂ 。

If yes, go to step S811;

if not, executing step S705 in the above embodiment;

and step S811, maintaining the dehumidifier to run with the current running parameters, namely, when the weight ratio of the water collection tank of the dehumidifier is not higher than 80%, indicating that the dehumidifier is not close to the water full state at the moment, and maintaining the running parameters of the current dehumidifier without additional control of the dehumidifier.

It should be noted that the current operation parameter may be specifically an operation parameter determined by a user for an operation parameter set by the dehumidifier, or an initial operation parameter of the dehumidifier, or an operation parameter of the compressor and the fan determined by other conventional technical means.

When the capacity of the water collection tank of the dehumidifier is abundant, additional control is not needed, the current operation parameters of the dehumidifier are kept, and environmental transformation caused by controlling the operation parameters is avoided, so that the use experience of a user is influenced.

In yet another embodiment provided by the present invention, the controller further performs:

calculating the running frequency of a compressor of the dehumidifier and the rotating speed of a fan according to the weight ratio, the current ambient temperature and the current ambient humidity;

Wherein the operating frequency f= (delta) _T T+δ _H H-δ _M )(f _max -f _min )+f _min The rotation speed v= (delta) _T T+δ _H H-δ _M )(v _max -v _min )+v _min ，δ _T And delta _H Respectively a temperature coefficient and a humidity coefficient, T and H are respectively the current ambient temperature and the current ambient humidity, delta _M Weight ratio, f _max And f _min The highest frequency and the lowest frequency of the compressors, v _max And v _min And respectively the highest rotating speed and the lowest rotating speed of the fans.

In the implementation of this embodiment, in step S4 of the foregoing embodiment, according to the weight ratio, the current ambient temperature, and the current ambient humidity, corresponding operation parameters are matched in a preset instruction matching library, and specifically, the operation frequency of the compressor and the rotation speed of the fan may be calculated according to an operation parameter calculation formula.

The operation parameter calculation formula comprehensively calculates the operation frequency of the compressor and the rotating speed of the fan by taking the weight ratio, the current environment temperature and the current environment humidity into consideration, and specifically:

compressor operating frequency f= (0.01t+0.01h- δ) _M )(f _max -f _min )+f _min ；

Rotational speed v= (0.01t+0.01h- δ of fan) _M )(v _max -v _min )+v _min ；

In the present embodiment, the temperature coefficient δ _T Coefficient of humidity delta _H Are all set to 0.01, in other embodiments, the temperature coefficient delta _T Coefficient of humidity delta _H Can be set or adjusted according to actual conditions, and will not be described herein.

In the specific implementation, if the calculated operating frequency f is not equal to [ f ] _min ，f _max ]Taking f when the range is within _max And f _min The nearest value of the operating frequency f is used as the current operating parameter to control the operation of the compressor, so as to avoid the calculated operating parameter from exceedingAnd passing through the working range of the dehumidifier.

In the specific implementation, if the calculated rotation speed v is not equal to [ _min ， _max ]When in range, take v _max And v _min The nearest value of the rotating speed v is used as the rotating speed to control the fan to operate, so that the calculated operating parameter is prevented from exceeding the working range of the dehumidifier.

Through the designed operation parameter calculation formula, corresponding operation parameters can be output according to different weight ratios, current environment temperature and current environment humidity, stepless adjustment of the operation parameters is realized, and the operation parameters of the current dehumidifier can be adjusted more accurately. The designed operation parameter calculation formula is characterized in that the operation frequency and the fan rotating speed are in direct proportion to the current environment humidity and the current environment temperature, and the operation frequency and the fan rotating speed of the compressor are increased under the high-temperature and high-humidity environment; and in a low-temperature and low-humidity environment, the running frequency of the compressor and the rotating speed of the fan are reduced so as to maintain the dehumidification effect of the dehumidifier. The operating frequency and fan speed are also inversely proportional to the weight ratio, with the greater the weight ratio, the closer to the water full condition, the lower the operating frequency and fan speed, to extend the dehumidifier operating time.

In yet another embodiment provided by the present invention, the controller further performs:

after the dehumidifier is electrified, acquiring the current weight of the water collection tank and the water level monitoring state monitored by the water level switch;

calculating the weight ratio of the current weight to the preset water full weight;

when the water level monitoring state is a water full state and the calculated weight ratio is not more than a preset third specific gravity threshold, controlling the whole dehumidifier to stop, and outputting a normally closed fault alarm prompt of the water level switch;

when the water level monitoring state is a water full state and the calculated weight ratio is larger than the third specific gravity threshold, controlling the whole dehumidifier to stop, and outputting a water full prompt;

wherein the third specific gravity threshold is not higher than the first specific gravity threshold.

In the implementation of this embodiment, referring to fig. 9, a schematic diagram of a control flow executed by the controller according to the present invention and operating in the fourth embodiment is shown, where before the compressor is controlled to perform the power-on operation, the controller executes the following steps.

Step S901, powering up the whole dehumidifier;

step S902, acquiring the current weight M of the water collection tank and a water level monitoring state monitored by a water level switch.

Step S903, calculating the weight ratio delta _M I.e. calculate the current weight M and the water full weight M of the water collection tank _F Ratio of delta _M ＝M/M _F 。

The water full weight is a water collection tank weight value of the water tank under the water level of the normal trigger water level switch, and the accuracy of the water full weight is increased by detecting and averaging for multiple times.

Step S904, determining whether the water level monitoring state is a water full state. When the water collection tank reaches a water full state through weight ratio detection, the water level monitoring state monitored by the water level switch is judged, and then the fault of the water level switch can be monitored.

If yes, go to step S905;

step S905, judging the weight ratio delta _M Whether or not more than 85% is established, i.e. by judging the weight ratio delta _M Whether or not it is greater than a third specific gravity threshold value delta ₃ Determining whether the water collection tank reaches a water full state. When judging that the water level switch monitors the water full state, whether the water tank reaches the water full state or not is detected through the weight ratio, and then the fault of the water level switch can be monitored.

If yes, go to step S906;

if not, go to step S907.

Step S906, controlling the whole dehumidifier to stop, and outputting a water full prompt. The water level monitoring state monitored by the water level switch is a water full state, and when the water collection tank is detected to be in the water full state through the weight ratio, the water level switch is judged to be normally monitored at the moment, the water full state is reached at the moment, the dehumidifier compressor is controlled to stop, and a water full prompt is output so that a user can finish the corresponding water collection tank clean water work.

And step S907, controlling the whole dehumidifier to stop, and outputting a normally closed fault alarm prompt of the water level switch. The water level monitoring state is a water full state, and when the calculated weight ratio detects that the water is not full, the water level monitoring state indicates that the water level switch is out of order, and when the water is not full, the water level monitoring state outputs a water full signal, controls the whole dehumidifier to stop, and outputs a normally closed fault alarm prompt of the water level switch.

When the whole dehumidifier is powered on, the working state and the water level state of the dehumidifier are judged through the water level monitoring state monitored by the water level switch and the calculated weight ratio, the pre-detection can be carried out before the power on of the compressor, and the whole dehumidifier is stopped under the fault or water full state of the water level switch. And the phenomenon that the water level switch is in fault or in a water full state, the compressor is started to cause water full overflow or abnormal working of the dehumidifier is avoided.

In yet another embodiment provided by the present invention, the controller further performs:

when the water level monitoring state is a non-water full state and the calculated weight ratio is larger than the third specific gravity threshold value, controlling the whole dehumidifier to stop, and outputting a normally-open fault alarm prompt of the water level switch;

and when the water level monitoring state is a non-water full state and the calculated weight ratio is not greater than the third specific gravity threshold value, displaying the current weight ratio.

In the embodiment, referring to fig. 9, in step S904, if it is determined whether the water level monitoring state is a water full state, that is, if the determination result in step S904 is yes, step S908 is executed;

step S908, judge delta _M Whether or not more than 85% is established, i.e. by judging the weight ratio delta _M Whether or not it is greater than a third specific gravity threshold value delta ₃ Determining whether the water collection tank reaches a water full state. When the water level switch is judged to monitor that the water level monitoring state is a non-water full state, whether the water collecting tank reaches the water full state or not is detected through the weight ratio, and then the fault of the water level switch can be monitored.

If yes, go to step S909;

if not, go to step S910.

And step S909, controlling the whole dehumidifier to stop, and outputting the normally open fault alarm prompt of the water level switch. When the water level monitoring state monitored by the water level switch is a non-water full state and the water collecting tank is detected to be in the water full state through the weight ratio, the water level switch is judged to be abnormal in monitoring, the water full state is reached at the moment, the water level switch is still kept in the off state, the whole dehumidifier is controlled to stop, and the normally open fault alarm prompt of the water level switch is output.

Step S910, the current weight ratio is displayed. The water level monitoring state is in a non-water full state, and when the calculated weight ratio detects that the water is not full, the water collecting tank is indicated to be under the condition that the water is not full at the moment, the dehumidifier is just started up, the dehumidifier works normally at the moment, and the current weight ratio of the dehumidifier is output at the moment, so that a user can know the current water amount of the dehumidifier conveniently.

When the whole dehumidifier is powered on, the working state and the water level state of the dehumidifier are judged through the water level monitoring state monitored by the water level switch and the calculated weight ratio, the pre-detection can be carried out before the power on of the compressor, and the whole dehumidifier is stopped under the fault or water full state of the water level switch. The method has the advantages that the phenomenon that the water is overflowed or the dehumidifier works abnormally due to the fact that the compressor is started under the condition that the water level switch is in a fault or water is full is avoided, and when the dehumidifier works normally, the weight ratio is output to a user to represent that the current working state is normal.

In yet another embodiment provided by the present invention, the controller further performs:

after the current weight ratio is displayed, starting to calculate the power-on time length, and monitoring whether a complete machine operation signal is received or not;

and when a complete machine operation signal is received or the calculated power-on time length is greater than a preset time length threshold value, controlling the complete machine of the dehumidifier to perform power-on operation.

In the implementation of this embodiment, referring to fig. 10, a schematic diagram of a control flow executed by the controller according to the present invention and operating in the fifth embodiment is shown, where the controller is further configured to execute the following steps:

step S1001, displaying the current weight ratio; after displaying the current weight ratio in step S910 in the above embodiment, the controller performs the compressor start judgment, specifically performs the following steps:

Step S1002, it is determined whether a complete machine operation signal is received, i.e. whether the user controls the complete machine to start operation.

If not, go to step S1003;

if yes, go to step S1005;

step S1003, updating the power-on duration t, that is, the power-on duration t=t+1 of the dehumidifier, where the initial power-on duration t=0;

step S1004, judging whether the power-on duration t is greater than 10S; and judging whether the power-on duration is greater than a preset duration threshold.

In this embodiment, the time period threshold is 10s as an example, and in other embodiments, the time period threshold may be adjusted or set according to the actual situation.

If yes, go to step S1005;

if not, returning to step S1002;

step S1005, controlling the whole dehumidifier to be powered on.

When the dehumidifier works normally, the weight ratio of the water tank is displayed, the display time is 10 seconds, if the user presses the starting function within 10 seconds, the display is finished in advance, the dehumidifier enters a normal starting state, and if the user does not press the starting function after 10 seconds, the dehumidifier enters a complete machine starting state, so that the power consumption generated by long-time standby of the dehumidifier is reduced.

The embodiment of the invention also provides a dehumidification control method of the dehumidifier, which comprises the following steps:

A refrigerant circuit in which a refrigerant circulates through a compressor, a condenser, an expansion valve, an evaporator, and the like in this order in a refrigeration cycle;

the water collecting tank is used for collecting water generated when the evaporator works;

the water level switch is arranged at the upper part of the water collection tank and is used for monitoring the water level state of the water collection tank;

the temperature sensor is used for monitoring the current ambient temperature;

the humidity sensor is used for monitoring the current environment humidity;

a weight sensor for detecting the weight of the water collection tank;

the controller is electrically connected with the water level switch, the weight sensor, the temperature sensor and the humidity sensor;

the method comprises the following steps:

after the whole dehumidifier operates, acquiring the current weight of the water collection tank and the water level monitoring state monitored by the water level switch;

calculating the weight ratio of the current weight to the preset water full weight;

outputting a normally closed fault alarm prompt of the water level switch when the weight ratio is not greater than a preset first weight threshold and the water level monitoring state is a water full state;

when the weight ratio is not greater than the first weight threshold and the water level monitoring state is a non-water full state, monitoring the current environment temperature and the current environment humidity; and matching corresponding operation parameters in a preset instruction matching library according to the weight ratio, the current environment temperature and the current environment humidity, and controlling the dehumidifier to operate according to the operation parameters.

It should be noted that, the dehumidification control method of the dehumidifier provided by the embodiment of the present invention is the same as all the steps of the flow executed by the controller of the dehumidifier in the above embodiment, referring to fig. 5, the method includes: the working principles and beneficial effects of the two are in one-to-one correspondence, and specific working flow charts refer to fig. 6-10, so that the description is omitted.

Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), or the like.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.

Claims (10)

1. A dehumidifier, the dehumidifier comprising:

a refrigerant circuit in which a refrigerant circulates through a compressor, a condenser, an expansion valve, an evaporator, and the like in this order in a refrigeration cycle;

the water collecting tank is used for collecting water generated when the evaporator works;

the water level switch is arranged at the upper part of the water collection tank and is used for monitoring the water level state of the water collection tank;

the temperature sensor is used for monitoring the current ambient temperature;

the humidity sensor is used for monitoring the current environment humidity;

a weight sensor for detecting the weight of the water collection tank;

the controller is electrically connected with the water level switch, the weight sensor, the temperature sensor and the humidity sensor;

the controller performs:

after the whole dehumidifier operates, acquiring the current weight of the water collection tank and the water level monitoring state monitored by the water level switch;

calculating the weight ratio of the current weight to the preset water full weight;

outputting a normally closed fault alarm prompt of the water level switch when the weight ratio is not greater than a preset first weight threshold and the water level monitoring state is a water full state;

When the weight ratio is not greater than the first weight threshold and the water level monitoring state is a non-water full state, monitoring the current environment temperature and the current environment humidity; and matching corresponding operation parameters in a preset instruction matching library according to the weight ratio, the current environment temperature and the current environment humidity, and controlling the dehumidifier to operate according to the operation parameters.

2. The dehumidifier of claim 1, wherein the controller further performs:

and when the weight ratio is larger than the first weight threshold and the water level monitoring state is a water full state, controlling the whole dehumidifier to stop and outputting a water full prompt.

3. The dehumidifier of claim 1, wherein the controller further performs:

when the weight ratio is larger than the first weight threshold, and the water level monitoring state is a non-water full state, the whole dehumidifier is controlled to stop, and the normally open fault alarm and the water full prompt of the water level switch are output.

4. The dehumidifier of claim 1, wherein the controller further performs:

when the weight ratio is larger than a preset second specific gravity threshold and smaller than the first specific gravity threshold, the current ambient humidity is not larger than a preset first humidity threshold, and the current ambient temperature is smaller than a preset first temperature threshold, judging that the first running condition is met, controlling a compressor of the dehumidifier to run at a preset highest frequency, and controlling a fan of the dehumidifier to run at a preset highest rotating speed;

When the weight ratio is larger than the second specific gravity threshold and smaller than the first specific gravity threshold, the current ambient humidity is larger than a preset second humidity threshold, and the current ambient temperature is larger than a preset second temperature threshold, judging that the preset second operation condition is met, controlling a compressor of the dehumidifier to operate at a preset minimum frequency, and controlling a fan of the dehumidifier to operate at a preset minimum rotating speed;

when the weight ratio is larger than the second specific gravity threshold and smaller than the first specific gravity threshold and does not accord with the first running condition and the second running condition, controlling a compressor of the dehumidifier to run at a preset first frequency and controlling a fan of the dehumidifier to run at a preset first rotation speed;

the first humidity threshold is smaller than the second humidity threshold, the first temperature threshold is smaller than the second temperature threshold, and the second specific gravity threshold is not smaller than the first specific gravity threshold.

5. The dehumidifier of claim 4, wherein the controller further performs:

and when the weight ratio is not greater than the second specific gravity threshold value, maintaining the dehumidifier to operate with the current operation parameters.

6. The dehumidifier of claim 1, wherein the controller further performs:

calculating the running frequency of a compressor of the dehumidifier and the rotating speed of a fan according to the weight ratio, the current ambient temperature and the current ambient humidity;

wherein the operating frequency f= (delta) _T T+δ _H H-δ _M )(f _max -f _min )+f _min The rotation speed v= (delta) _T T+δ _H H-δ _M )(v _max -v _min )+v _min ，δ _T And delta _H Respectively a temperature coefficient and a humidity coefficient, T and H are respectively the current ambient temperature and the current ambient humidity, delta _m Weight ratio, f _max And f _min The highest frequency and the lowest frequency of the compressors, v _max And v _min And respectively the highest rotating speed and the lowest rotating speed of the fans.

7. The dehumidifier of claim 1, wherein the controller further performs:

after the dehumidifier is electrified, acquiring the current weight of the water collection tank and the water level monitoring state monitored by the water level switch;

calculating the weight ratio of the current weight to the preset water full weight;

when the water level monitoring state is a water full state and the calculated weight ratio is not more than a preset third specific gravity threshold, controlling the whole dehumidifier to stop, and outputting a normally closed fault alarm prompt of the water level switch;

when the water level monitoring state is a water full state and the calculated weight ratio is larger than the third specific gravity threshold, controlling the whole dehumidifier to stop, and outputting a water full prompt;

Wherein the third specific gravity threshold is not higher than the first specific gravity threshold.

8. The dehumidifier of claim 7, wherein the controller further performs:

when the water level monitoring state is a non-water full state and the calculated weight ratio is larger than the third specific gravity threshold value, controlling the whole dehumidifier to stop, and outputting a normally-open fault alarm prompt of the water level switch;

and when the water level monitoring state is a non-water full state and the calculated weight ratio is not greater than the third specific gravity threshold value, displaying the current weight ratio.

9. The dehumidifier of claim 8, wherein the controller further performs:

after the current weight ratio is displayed, starting to calculate the power-on time length, and monitoring whether a complete machine operation signal is received or not;

and when a complete machine operation signal is received or the calculated power-on time length is greater than a preset time length threshold value, controlling the complete machine of the dehumidifier to perform power-on operation.

10. A dehumidification control method of a dehumidifier, the dehumidifier comprising:

a refrigerant circuit in which a refrigerant circulates through a compressor, a condenser, an expansion valve, an evaporator, and the like in this order in a refrigeration cycle;

the water collecting tank is used for collecting water generated when the evaporator works;

The water level switch is arranged at the upper part of the water collection tank and is used for monitoring the water level state of the water collection tank;

the temperature sensor is used for monitoring the current ambient temperature;

the humidity sensor is used for monitoring the current environment humidity;

a weight sensor for detecting the weight of the water collection tank;

the controller is electrically connected with the water level switch, the weight sensor, the temperature sensor and the humidity sensor;

the method comprises the following steps:

after the whole dehumidifier operates, acquiring the current weight of the water collection tank and the water level monitoring state monitored by the water level switch;

calculating the weight ratio of the current weight to the preset water full weight;

outputting a normally closed fault alarm prompt of the water level switch when the weight ratio is not greater than a preset first weight threshold and the water level monitoring state is a water full state;

when the weight ratio is not greater than the first weight threshold and the water level monitoring state is a non-water full state, monitoring the current environment temperature and the current environment humidity; and matching corresponding operation parameters in a preset instruction matching library according to the weight ratio, the current environment temperature and the current environment humidity, and controlling the dehumidifier to operate according to the operation parameters.