CN111706929A

CN111706929A - Control method and device for dehumidifier and dehumidifier

Info

Publication number: CN111706929A
Application number: CN202010490403.4A
Authority: CN
Inventors: 张玲玲; 王宜金; 张振富
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Haier Smart Home Co Ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2020-09-25

Abstract

The application relates to the technical field of electrical equipment and discloses a control method for a dehumidifier. The dehumidifier comprises a fan and a refrigerant circulating flow path consisting of a compressor, an evaporator, a condenser and a throttling device; the throttling device comprises a switching valve and a plurality of throttling branches with different throttling fluxes; the control method for the dehumidifier comprises the following steps: acquiring indoor environment humidity; and controlling the running state of the compressor and switching the throttling state of the throttling device according to the ambient humidity. The throttling branch circuits with different throttling fluxes are communicated with the refrigerant circulating flow path through control, so that the power of the refrigerant circulating system of the dehumidifier is adjusted according to the environment humidity condition, the starting and stopping frequency of the compressor is reduced, the loss of the compressor caused by starting and stopping is reduced, and the service life of the compressor is prolonged. The application also discloses a control device for the dehumidifier and the dehumidifier.

Description

Control method and device for dehumidifier and dehumidifier

Technical Field

The application relates to the technical field of electrical equipment, for example to a dehumidifier and a control method and device for the dehumidifier.

Background

With the continuous improvement of the living standard of people, the dehumidifier is gradually expanded from commercial use to household use, and becomes an indispensable household appliance.

At present, most of household dehumidifiers are constant-frequency dehumidifiers and comprise a shell, a compressor, a heat exchanger, a fan and the like, and the working principle of the dehumidifier is that moist air is sucked into the shell of the dehumidifier by the fan, the heat exchanger exchanges heat with the moist air through the operation of the compressor, so that water vapor in the moist air is condensed into water, and the water content in the air is reduced.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

because the dehumidification power of the constant-frequency dehumidifier is constant, when the environmental humidity is higher than the target humidity, the compressor operates; when the environmental humidity is less than the target humidity, the compressor is stopped; therefore, in the dehumidification process of the constant-frequency dehumidifier, the compressor is frequently started and stopped, the loss of the compressor is large, and the service life of the compressor is influenced.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a control method and device for a dehumidifier and the dehumidifier, and aims to solve the problem that the loss of a compressor is large due to frequent start and stop of the compressor in the dehumidification process of a constant-frequency dehumidifier.

In some embodiments, the dehumidifier includes a fan and a refrigerant circulation flow path constituted by a compressor, an evaporator, a condenser and a throttle device; the throttling device comprises a switching valve and a plurality of throttling branches with different throttling fluxes; the control method for the dehumidifier comprises the following steps: acquiring indoor environment humidity; controlling the running state of the compressor and switching the throttling state of the throttling device according to the environment humidity; wherein switching the throttle state of the throttle device includes controlling a switching valve to communicate at least one throttle branch with the refrigerant circulation flow path.

In some embodiments, the control device for a dehumidifier comprises a processor and a memory storing program instructions, the processor being configured to perform the control method for a dehumidifier as described above when executing the program instructions.

In some embodiments, the dehumidifier includes a fan and a refrigerant circulation flow path constituted by a compressor, an evaporator, a condenser and a throttle device; the throttling device comprises a switching valve and a plurality of throttling branches with different throttling fluxes and the control device for the dehumidifier.

The control method and device for the dehumidifier and the dehumidifier provided by the embodiment of the disclosure can realize the following technical effects:

the dehumidifier automatically controls the running state of the compressor and the throttling state of the switching throttling device according to the environment humidity, wherein the switching of the throttling state of the throttling device comprises the step of controlling a switching valve to communicate at least one throttling branch with a refrigerant circulating flow path, so that the problem of large compressor loss caused by frequent start and stop of the compressor in the dehumidification process of the constant-frequency dehumidifier is solved; the throttling branch circuits with different throttling fluxes are communicated with the refrigerant circulating flow path through control, so that the power of the refrigerant circulating system of the dehumidifier is adjusted according to the environment humidity condition, the starting and stopping frequency of the compressor is reduced, the loss of the compressor caused by starting and stopping is reduced, and the service life of the compressor is prolonged.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

FIG. 1 is a schematic diagram of a control method for a dehumidifier according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a refrigerant cycle system provided by an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a throttling device according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of another throttling device provided by the embodiment of the disclosure;

FIG. 5 is a schematic illustration of a first throttle state provided by an embodiment of the present disclosure;

FIG. 6 is a schematic illustration of a second throttle state provided by an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a third throttle state provided by embodiments of the present disclosure;

fig. 8 is a schematic diagram of a control device for a dehumidifier according to an embodiment of the present disclosure.

Reference numerals:

1. a throttling device; 10. a liquid inlet end; 20. a liquid outlet end; 30. a throttling branch; 31. a first branch; 311. a first end; 312. a second end; 32. a second branch circuit; 321. a third end; 322. a fourth end; 33. a third branch; 331. a fifth end; 332. a sixth terminal; 40. a changeover valve; 41. a first switching valve; 42. a second switching valve; 2. a compressor; 3. an evaporator; 4. a condenser; 100. a processor; 101. a memory; 102. a communication interface; 103. a bus.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

With reference to fig. 1, an embodiment of the present disclosure provides a control method for a dehumidifier, including:

and S01, acquiring the indoor ambient humidity.

And S02, controlling the running state of the compressor and switching the throttling state of the throttling device according to the ambient humidity.

As shown in fig. 2, the refrigerant circulation system includes a refrigerant circulation flow path formed by the compressor 2, the evaporator 3, and the condenser 4, and further includes the above-described throttle device 1, the throttle device 1 is disposed between the evaporator 3 and the condenser 4, and the throttle device 1 includes a plurality of throttle branches 30 and a switching valve 40.

Alternatively, the operation state of the compressor includes controlling the compressor 2 to be operated on and controlling the compressor 2 to be operated off. Switching the throttle state of the throttle device 1 includes controlling the switching valve 40 to communicate at least one throttle branch 30 with the refrigerant circulation flow path.

By adopting the control method for the dehumidifier provided by the embodiment of the disclosure, the dehumidifier automatically controls the running state of the compressor 2 and the throttling state of the switching throttling device 1 according to the environment humidity, wherein the switching of the throttling state of the throttling device 1 comprises the step of controlling the switching valve 40 to communicate at least one throttling branch 30 with the refrigerant circulating flow path, so that the problem that the loss of the compressor 2 is large due to frequent start and stop of the compressor 2 in the dehumidification process of the constant-frequency dehumidifier is solved; the throttling branch circuits with different throttling fluxes are communicated with the refrigerant circulating flow path through control, so that the power of the refrigerant circulating system of the dehumidifier is adjusted according to the environment humidity condition, the starting and stopping frequency of the compressor 2 is reduced, the loss of the compressor 2 caused by starting and stopping is reduced, and the service life of the compressor 2 is prolonged.

Referring to fig. 3 to 4, the embodiment of the present disclosure provides a throttling device 1, including an inlet end 10, an outlet end 20, a plurality of throttling branches 30, and a switching valve 40; the plurality of throttling branches 30 are arranged between the liquid inlet end 10 and the liquid outlet end 20, and the throttling flux of each throttling branch 30 is different; the switching valve 40 is arranged to controllably communicate at least one throttling branch 30 with the inlet side 10 and the outlet side 20.

Alternatively, the throttle branch 30 may be a refrigerant line provided with a throttling element. When the throttling device 1 is connected to the refrigerant circulation flow path, the refrigerant flows through the throttling device 1, flows in from the liquid inlet end 10, passes through the at least one throttling branch 30, and flows out from the liquid outlet end 20.

Here, the difference in the throttle flow rate of each throttle branch 30 can be realized by the difference in the throttle flow rate of the throttle element provided in each throttle branch 30. The throttling element may be a capillary tube, an electronic expansion valve, or the like. In the embodiment of the present disclosure, a capillary tube is taken as an example, and other throttling elements may be used in other embodiments of the present disclosure.

Alternatively, the change-over valve 40 is arranged at the inlet 10 or the outlet 20, wherein the change-over valve 40 is arranged to controllably connect one throttling branch 30 with the inlet 10 and the outlet 20.

Optionally, the change-over valve 40 is disposed at the liquid inlet 10, the change-over valve 40 includes a liquid inlet and a plurality of liquid outlets, the liquid inlet is communicated with the liquid inlet 10, and each liquid outlet is connected to one throttling branch 30, so that the liquid outlets are in one-to-one correspondence with the throttling branches 30, that is, the number of the liquid outlets is equal to the number of the throttling branches 30. By switching the liquid outlet communicating with the liquid inlet, the switching of the throttle branch 30 communicating with the liquid inlet 10 is realized. At this time, the liquid outlet end 20 may be provided with a current collecting element for communicating each throttling branch 30 with the liquid outlet end 20.

Alternatively, the change-over valve 40 is disposed at the outlet end 20, and in this case, the inlet end 10 may be provided with a flow dividing element for communicating the inlet end 10 with each throttling branch 30. Wherein, the change-over valve 40 includes a plurality of liquid inlets and a liquid outlet, each liquid inlet connects a throttle branch 30, make the liquid inlet correspond to throttle branch 30 one-to-one; the liquid outlet is communicated with the liquid outlet end 20. By switching the inlet port in communication with the outlet port, switching of the throttle branch 30 in communication with the outlet port 20 is achieved.

Optionally, the liquid inlet end 10 and the liquid outlet end 20 are both provided with a change-over valve 40, the change-over valve 40 comprises a first change-over valve and a second change-over valve, the first change-over valve is arranged at the liquid inlet end 10, and the second change-over valve is arranged at the liquid outlet end 20; the first conversion valve comprises a liquid inlet and a plurality of liquid outlets, the liquid inlet is communicated with the liquid inlet end 10, and each liquid outlet is connected with a throttling branch 30; the second switching valve comprises a plurality of liquid inlets and a liquid outlet, each liquid inlet is connected with a throttling branch 30, and the liquid outlet is communicated with the liquid outlet 20.

For example, the plurality of throttle legs 30 includes a first leg and a second leg; the first switching valve comprises a first liquid outlet connected with the first branch and a second liquid outlet connected with the second branch; the second conversion valve comprises a first liquid inlet connected with the first branch and a second liquid inlet connected with the second branch. When the first conversion valve is switched to the liquid inlet to be communicated with the first liquid outlet, correspondingly, the second conversion valve is switched to the first liquid inlet to be communicated with the corresponding liquid outlet. At this time, when the refrigerant flows through the throttling device 1, the refrigerant enters from the liquid inlet of the first switching valve, flows to the first branch from the first liquid outlet, flows into the second switching valve from the first branch through the first liquid inlet, and flows out from the liquid outlet of the second switching valve.

Similarly, when the first switching valve is switched to communicate the liquid inlet with the second liquid outlet, correspondingly, the second switching valve is switched to communicate the second liquid inlet with the corresponding liquid outlet. At this time, when the refrigerant flows through the throttling device 1, the refrigerant enters from the liquid inlet of the first switching valve, flows to the second branch from the second liquid outlet, flows into the second switching valve from the second branch through the second liquid inlet, and flows out from the liquid outlet of the second switching valve.

Therefore, the pipe diameters of the capillary tube of the first branch and the capillary tube of the second branch are different, so that the throttling flux of the first branch and the throttling flux of the second branch are enabled to be adjusted, the throttling flux of the throttling device 1 is switched under the condition that the output power of the constant-frequency compressor 2 is not changed, the refrigerating power of the refrigerant circulating flow path is adjusted, the dehumidifying capacity of the dehumidifier in unit time is adjusted, the starting and stopping times of the compressor 2 are reduced, the loss of the compressor 2 caused by starting and stopping is reduced, and the service life of the compressor 2 is prolonged.

Optionally, as shown in connection with fig. 5-7, the plurality of throttle legs 30 includes a first leg 31, a second leg 32, and a third leg 33; the throttle status includes one or more of: a first throttling state, a second throttling state and a third throttling state;

wherein, the first throttling state is to connect the first branch 31 with the liquid inlet end 10 and the liquid outlet end 20; the second throttling state is that the third branch 33 is communicated with the liquid inlet end 10 and the liquid outlet end 20; the third throttling state is to communicate the first branch 31, the second branch 32 and the third branch 33 in sequence, communicate the first branch 31 with the liquid inlet end 10 and communicate the third branch 33 with the liquid outlet end 20.

Alternatively, the switching valve 40 may be a four-way valve, wherein the switching valve 40 includes: the first conversion valve 41 is arranged at the liquid inlet end 10; and a second switching valve 42 arranged at the liquid outlet end 20.

Optionally, the first branch 31 comprises a first end 311 and a second end 312, the first throttling element being arranged between the first end 311 and the second end 312; the second branch 32 comprises a third end 321 and a fourth end 322, and the second throttling element is arranged between the third end 321 and the fourth end 322; the third branch 33 includes a fifth terminal 331 and a sixth terminal 332, and the third throttling element is disposed between the fifth terminal 331 and the sixth terminal 332. At this time, the first end 311 of the first branch 31, the third end 321 of the second branch 32, and the fifth end 331 of the third branch 33 are connected to the first switching valve 41; the second end 312 of the first branch 31, the fourth end 322 of the second branch 32, and the sixth end 332 of the third branch 33 are connected to the second switching valve 42.

Wherein the throttling flux of the first throttling element is larger than the throttling flux of the third throttling element; the throttling flux of the third throttling element is larger than the throttling flux of the second throttling element.

Here, the first switching valve 41 includes a first position and a second position. Wherein, the first position may mean that the first switching valve 41 is switched to connect the inlet 10 to the first end 311 of the first branch 31, and the third end 321 of the second branch 32 is connected to the fifth end 331 of the third branch 33. The second position may mean that the first switching valve 41 is switched to the inlet port 10 to communicate with the fifth port 331 of the third branch 33, and the first port 311 of the first branch 31 communicates with the third port 321 of the second branch 32.

Here, the second switching valve 42 includes a third position and a fourth position. The third position may mean that the second switching valve 42 is switched to connect the second end 312 of the first branch 31 with the outlet port 20, and the fourth end 322 of the second branch 32 is connected with the sixth end 332 of the third branch 33. The fourth position may refer to the second switching valve 42 being switched to communicate the sixth end 332 of the third branch 33 with the outlet port 20 and the second end 312 of the first branch 31 with the fourth end 322 of the second branch 32.

Optionally, the plurality of throttle legs 30 includes a first leg 31, a second leg 32, and a third leg 33; the switching valve 40 is controlled to switch to one of the following states: the first branch 31 is communicated with the liquid inlet end 10 and the liquid outlet end 20; the third branch 33 is communicated with the liquid inlet end 10 and the liquid outlet end 20; the first branch 31, the second branch 32 and the third branch 33 are communicated in sequence, the first branch 31 is communicated with the liquid inlet end 10, and the third branch 33 is communicated with the liquid outlet end 20. That is, the throttle device 1 comprises a first throttle state, a second throttle state and a third throttle state.

Alternatively, the first throttling state is that the first switching valve 41 is switched to the first position and the second switching valve 42 is switched to the third position, i.e. the first branch 31 is communicated with the liquid inlet end 10 and the liquid outlet end 20. At this time, when the expansion device 1 is installed in the refrigerant circulation flow path and the refrigerant passes through the expansion device 1, the refrigerant enters from the inlet port 10, passes through the first switching valve 41, flows into the first branch path 31 from the first port 311, flows into the second switching valve 42 from the second port 312, passes through the second switching valve 42, and flows out from the outlet port 20.

Alternatively, the second throttling state is that the first switching valve 41 is switched to the second position and the second switching valve 42 is switched to the fourth position, i.e. the second branch 32 is communicated with the liquid inlet end 10 and the liquid outlet end 20. At this time, when the expansion device 1 is installed in the refrigerant circulation flow path and the refrigerant passes through the expansion device 1, the refrigerant enters from the inlet port 10, passes through the first switching valve 41, flows into the third branch path 33 from the fifth port 331, flows into the second switching valve 42 from the sixth port 332, passes through the second switching valve 42, and flows out from the outlet port 20.

Optionally, the second throttling state is that the first switching valve 41 is switched to the first position and the second switching valve 42 is switched to the fourth position, that is, the third throttling state is that the first branch 31, the third branch 33 and the second branch 32 are communicated in sequence, the first branch 31 is communicated with the liquid inlet end 10, and the second branch 32 is communicated with the liquid outlet end 20. At this time, when the expansion device 1 is installed in the refrigerant circulation flow path and the refrigerant passes through the expansion device 1, the refrigerant enters from the inlet port 10, passes through the first switching valve 41, flows into the first branch path 31 from the first end 311, flows through the second switching valve 42 from the second end 312 to the fourth end 322, flows through the second branch path 32, flows through the first switching valve 41 from the third end 321 to the fifth end 331, flows through the third branch path 33, flows through the sixth end 332 to the second switching valve 42, and flows out from the outlet port 20 through the second switching valve 42.

In this way, since the first switching valve 41 of the throttle apparatus 1 can be switched between the first position and the second position, the second switching valve 42 can be switched between the third position and the fourth position; by the cooperation of the first switching valve 41 and the second switching valve 42, switching of the throttle states of three different throttle fluxes is achieved. The throttling device 1 is used for adjusting the refrigerating power of a refrigerant circulating flow path by switching the throttling flux of the throttling device 1 under the condition that the output power of the fixed-frequency compressor 2 is not changed in a refrigerant circulating system, so that the dehumidifying capacity of the dehumidifier in unit time is adjusted, the starting and stopping times of the compressor 2 are reduced, the loss of the compressor 2 caused by starting and stopping is reduced, and the service life of the compressor 2 is prolonged.

Herein, the first humidity threshold is greater than the second humidity threshold, which is greater than the third humidity threshold; the throttle flux of the first branch 31 is larger than the throttle flux of the third branch 33, and the throttle flux of the third branch 33 is larger than the throttle flux of the second branch 32.

Alternatively, controlling the operating state of the compressor 2 and switching the throttle state of the throttle device 1 according to the ambient humidity includes: when the environmental humidity is greater than the first humidity threshold value, the compressor 2 is controlled to operate, and the throttling device 1 is controlled to be switched to the first throttling state. In this way, when the indoor ambient humidity is high, a large cooling power is required at this time, and the throttle device 1 is switched to the throttle state having a large throttle flux, that is, the first throttle state, so that the dehumidification power is high, and the indoor dehumidification can be performed at a high speed. For example, the first humidity threshold may be 70% relative humidity, and when it is detected that the ambient humidity is greater than 70%, the compressor 2 is controlled to maintain the operating state, and the throttling device 1 is controlled to switch to the first throttling state, so as to communicate the first branch 31 with the liquid inlet end 10 and the liquid outlet end 20.

Optionally, controlling the operating state of the compressor 2 and switching the throttling state of the throttling device 1 according to the ambient humidity further comprises: when the environmental humidity is greater than the second humidity threshold and less than or equal to the first humidity threshold, controlling the compressor 2 to operate and controlling the throttling device 1 to be switched to a second throttling state; wherein the first humidity threshold is greater than the second humidity threshold, and the throttling flux of the first branch 31 is greater than the throttling flux of the third branch 33. Like this, under the condition that indoor environment humidity is medium, need medium refrigeration power this moment, switch throttling arrangement 1 to the throttle state that the throttle flux is medium, second throttle state promptly, make dehumidification power moderate, can not make dehumidification power too big, indoor environment humidity reduces rapidly to reach the target humidity too fast, compressor 2 frequently shuts down, causes the loss of compressor 2. For example, the second humidity threshold may be 50% relative humidity, and when it is detected that the ambient humidity is less than or equal to 70% relative humidity and greater than 50% relative humidity, the compressor 2 is controlled to maintain the operating state, and the throttling device 1 is controlled to switch to the second throttling state, so as to communicate the third branch 33 with the liquid inlet end 10 and the liquid outlet end 20.

Optionally, controlling the operating state of the compressor 2 and switching the throttling state of the throttling device 1 according to the ambient humidity further comprises: when the environmental humidity is greater than a third humidity threshold and less than or equal to a second humidity threshold, controlling the compressor 2 to operate and controlling the throttling device 1 to switch to a third throttling state; wherein the second humidity threshold is greater than the third humidity threshold, and the throttling flux of the third branch 33 is greater than the throttling flux of the second branch 32. Like this, under the condition that indoor environment humidity is moderate, need less refrigerating power this moment, switch over throttling arrangement 1 to the less throttle state of throttle flux, third throttle state promptly, make dehumidification power less, can not make dehumidification power too big, indoor environment humidity reduces rapidly to reach target humidity too soon, compressor 2 frequently shuts down, causes the loss of compressor 2. For example, the third humidity threshold may be 30% relative humidity, and when it is detected that the ambient humidity is less than or equal to 50% relative humidity and greater than 30% relative humidity, the compressor 2 is controlled to maintain the operating state, the throttling device 1 is controlled to switch to the third throttling state, the first branch 31, the second branch 32, and the third branch 33 are sequentially communicated, the first branch 31 is communicated with the liquid inlet end 10, and the third branch 33 is communicated with the liquid outlet end 20.

Optionally, controlling the operating state of the compressor 2 and switching the throttling state of the throttling device 1 according to the ambient humidity further comprises: and when the ambient humidity is less than or equal to the third humidity threshold value, controlling the compressor 2 to stop and controlling the throttling device 1 to switch to the third throttling state. For example, when the ambient humidity is 30% or less relative humidity, which indicates that dehumidification is not required in the room, the compressor 2 should be controlled to be turned off and the operation of the compressor 2 should be stopped. In a state where the compressor 2 is stopped, the control is performed to switch the expansion device 1 to the expansion state in which the expansion amount is small so that the expansion device 1 does not accumulate a large amount of refrigerant, thereby reducing the loss at the time of stopping the compressor 2.

Optionally, when the higher the indoor humidity is detected, the rotation speed of the fan can be controlled to be increased; conversely, when the lower the indoor humidity is detected, the lower the rotation speed of the fan can be controlled.

Optionally, after controlling the operation state of the compressor 2 and switching the throttling state of the throttling device 1, the method further comprises: and controlling the rotating speed of the fan according to the difference value between the ambient humidity and the first humidity threshold value, the second humidity threshold value or the third humidity threshold value. Therefore, after the throttling state of the throttling device 1 is determined, the environment humidity is in a certain range, the higher the environment humidity is, the higher the rotation speed of the fan can be controlled and increased, so that the flow speed of air at the evaporator is accelerated, and the dehumidification efficiency of the dehumidifier is accelerated; on the contrary, the smaller the detected environment humidity is, the rotating speed of the fan can be controlled to be reduced, and the dehumidification efficiency of the dehumidifier is reduced, so that the stability of the indoor environment humidity is realized, and the comfort level of the indoor environment is improved.

Optionally, under the condition that the throttling device 1 is in the first throttling state, when the difference between the ambient humidity and the first humidity threshold is greater than the preset difference, the fan is controlled to operate at the first rotation speed, and when the difference between the ambient humidity and the first humidity threshold is less than or equal to the preset difference, the fan is controlled to operate at the second rotation speed.

Optionally, in a case that the throttling device 1 is in the second throttling state, when a difference between the ambient humidity and the second humidity threshold is greater than a preset difference, the fan is controlled to operate at the first rotation speed, and when the difference between the ambient humidity and the second humidity threshold is less than or equal to the preset difference, the fan is controlled to operate at the second rotation speed.

Optionally, in a case that the throttling device 1 is in the third throttling state, when a difference between the ambient humidity and the third humidity threshold is greater than a preset difference, the fan is controlled to operate at the first rotation speed, and when the difference between the ambient humidity and the third humidity threshold is less than or equal to the preset difference, the fan is controlled to operate at the second rotation speed.

In practical application, the dehumidifier can have a plurality of dehumidification gears. The dehumidification gear comprises a first-stage gear and a second-stage gear, and the first-stage gear comprises a throttling state of the throttling device 1 and an operation state of the compressor 2; the secondary gear comprises adjusting the rotation speed of the fan. Alternatively, the gear of the rotation speed may be second gear, third gear, fourth gear, etc., and is not limited herein.

For example, when the ambient humidity is detected to be less than or equal to 70% relative humidity and greater than 50% relative humidity, the compressor 2 is controlled to maintain the running state, the throttling device 1 is controlled to be switched to the second throttling state, and the third branch 33 is communicated with the liquid inlet end 10 and the liquid outlet end 20. Under the condition that the throttling state of the throttling device 1 is determined to be a second throttling state, calculating to obtain a difference value between the environment humidity and a second humidity threshold value, comparing the difference value with a preset difference value, for example, the preset difference value is 10%, and controlling the fan to operate at a high rotating speed when the difference value between the environment humidity and the second humidity threshold value is greater than 10%; and when the difference value between the environmental humidity and the second humidity threshold value is less than or equal to 10%, controlling the fan to operate at a low rotating speed.

Therefore, after the throttling state of the throttling device 1 is determined, the environment humidity is in a certain range, and the higher the environment humidity is, the rotating speed of the fan can be controlled to be increased so as to accelerate the flow velocity of air at the evaporator and accelerate the dehumidification efficiency of the dehumidifier; on the contrary, the smaller the detected environment humidity is, the rotating speed of the fan can be controlled to be reduced, and the dehumidification efficiency of the dehumidifier is reduced, so that the stability of the indoor environment humidity is realized, and the comfort level of the indoor environment is improved.

As shown in fig. 8, an embodiment of the present disclosure provides a control device for a dehumidifier, which includes a processor (processor)100 and a memory (memory) 101. Optionally, the apparatus may also include a Communication Interface (Communication Interface)102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via a bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call the logic instructions in the memory 101 to perform the control method for the dehumidifier of the above-described embodiment.

In addition, the logic instructions in the memory 101 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.

The memory 101, which is a computer-readable storage medium, may be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing by executing program instructions/modules stored in the memory 101, that is, implements the control method for the dehumidifier in the above-described embodiments.

The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.

The embodiment of the disclosure provides a dehumidifier, which comprises a fan and a refrigerant circulating flow path composed of a compressor, an evaporator, a condenser and a throttling device; the throttling device comprises a switching valve, a plurality of throttling branches with different throttling fluxes and the control device for the dehumidifier.

By adopting the dehumidifier provided by the embodiment of the disclosure, the running state of the compressor can be automatically controlled and the throttling state of the throttling device can be switched according to the environment humidity, wherein the switching of the throttling state of the throttling device comprises the step of controlling the switching valve to communicate at least one throttling branch with the refrigerant circulating flow path, so that the problem of large compressor loss caused by frequent starting and stopping of the compressor in the dehumidification process of the constant frequency dehumidifier is solved; the throttling branch circuits with different throttling fluxes are communicated with the refrigerant circulating flow path through control, so that the power of the refrigerant circulating system of the dehumidifier is adjusted according to the environment humidity condition, the starting and stopping frequency of the compressor is reduced, the loss of the compressor caused by starting and stopping is reduced, and the service life of the compressor is prolonged.

The embodiment of the disclosure provides a computer-readable storage medium, which stores computer-executable instructions configured to execute the above-mentioned control method for a dehumidifier.

An embodiment of the present disclosure provides a computer program product including a computer program stored on a computer-readable storage medium, the computer program including program instructions, which, when executed by a computer, cause the computer to execute the above-mentioned control method for a dehumidifier.

The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.

The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.

Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims

1. A control method for a dehumidifier comprises a fan and a refrigerant circulating flow path composed of a compressor, an evaporator, a condenser and a throttling device; the throttling device comprises a switching valve and a plurality of throttling branches with different throttling fluxes; the control method comprises the following steps:

acquiring indoor environment humidity;

controlling the running state of a compressor and switching the throttling state of the throttling device according to the environment humidity;

wherein switching the throttle state of the throttle device includes controlling the switching valve to communicate at least one throttle branch with the refrigerant circulation flow path.

2. The control method of claim 1, wherein the throttling device further comprises a liquid inlet end and a liquid outlet end; the plurality of throttling branches comprise a first branch, a second branch and a third branch; the throttle status includes one or more of:

a first throttling state, a second throttling state and a third throttling state;

the first throttling state is that the first branch is communicated with the liquid inlet end and the liquid outlet end; the second throttling state is that the third branch is communicated with the liquid inlet end and the liquid outlet end; and the third throttling state is that the first branch, the second branch and the third branch are communicated in sequence, the first branch is communicated with the liquid inlet end, and the third branch is communicated with the liquid outlet end.

3. The control method according to claim 2, wherein the controlling of the operating state of the compressor and the switching of the throttle state of the throttle device according to the ambient humidity includes:

and when the environment humidity is greater than a first humidity threshold value, controlling the compressor to operate and controlling the throttling device to be switched to a first throttling state.

4. The control method according to claim 3, wherein the controlling of the operating state of the compressor and the switching of the throttle state of the throttle device according to the ambient humidity further comprises:

when the environmental humidity is greater than a second humidity threshold value and less than or equal to a first humidity threshold value, controlling the compressor to operate and controlling the throttling device to be switched to a second throttling state;

wherein the first humidity threshold is larger than the second humidity threshold, and the throttling flux of the first branch is larger than that of the third branch.

5. The control method according to claim 4, wherein the controlling of the operating state of the compressor and the switching of the throttle state of the throttle device according to the ambient humidity further comprises:

when the environmental humidity is greater than a third humidity threshold and less than or equal to a second humidity threshold, controlling the compressor to operate and controlling the throttling device to be switched to a third throttling state;

wherein the second humidity threshold is larger than the third humidity threshold, and the throttling flux of the third branch is larger than that of the second branch.

6. The control method according to claim 5, wherein the controlling of the operating state of the compressor and the switching of the throttle state of the throttle device according to the ambient humidity further comprises:

and when the environmental humidity is less than or equal to a third humidity threshold value, controlling the compressor to stop, and controlling the throttling device to switch to a third throttling state.

7. The control method according to any one of claims 2 to 6, further comprising, after the controlling the operating state of the compressor and switching the throttle state of the throttle device:

and controlling the rotating speed of the fan according to the difference value between the environment humidity and the first humidity threshold value, the second humidity threshold value or the third humidity threshold value.

8. The control method according to claim 7,

when the throttling device is in a first throttling state, when the difference value between the environment humidity and the first humidity threshold value is larger than a preset difference value, the fan is controlled to operate at a first rotating speed, and when the difference value between the environment humidity and the first humidity threshold value is smaller than or equal to the preset difference value, the fan is controlled to operate at a second rotating speed;

under the condition that the throttling device is in a second throttling state, when the difference value between the environment humidity and the second humidity threshold value is larger than a preset difference value, the fan is controlled to operate at a first rotating speed, and when the difference value between the environment humidity and the second humidity threshold value is smaller than or equal to the preset difference value, the fan is controlled to operate at a second rotating speed;

and under the condition that the throttling device is in a third throttling state, when the difference value between the environment humidity and the third humidity threshold value is greater than a preset difference value, the fan is controlled to operate at a first rotating speed, and when the difference value between the environment humidity and the third humidity threshold value is less than or equal to the preset difference value, the fan is controlled to operate at a second rotating speed.

9. A control device for a dehumidifier comprising a processor and a memory storing program instructions, wherein the processor is configured to perform a control method for a dehumidifier according to any one of claims 1 to 8 when executing the program instructions.

10. The dehumidifier is characterized by comprising a fan and a refrigerant circulating flow path formed by a compressor, an evaporator, a condenser and a throttling device; the throttling means comprises a switching valve and a plurality of throttling branches having different throttling fluxes and a control device for a dehumidifier according to claim 9.