CN113357749B

CN113357749B - Method and device for dehumidification control and air conditioner

Info

Publication number: CN113357749B
Application number: CN202010146933.7A
Authority: CN
Inventors: 赵凯强; 汪亚东
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: 2020-03-05
Filing date: 2020-03-05
Publication date: 2022-10-28
Anticipated expiration: 2040-03-05
Also published as: CN113357749A

Abstract

The application relates to the technical field of electric appliance control, and discloses a method for dehumidification control, which comprises the following steps: monitoring the weight change of the water collecting tank in the dehumidification process; and when the change of the weight of the water collecting tank meets a first condition, starting an anti-freezing mode. Before the coil pipe of dehumidification equipment freezes, a large amount of water molecules condense on the coil pipe, reduce dehumidification efficiency, the method provided by the disclosure determines the weight change of condensed water by detecting the weight of a condensed water collecting tank, judges the dehumidification efficiency according to the change, improves the accuracy of judging whether the dehumidification equipment has freezing risk, and timely starts the anti-freezing operation when the weight change meets a first condition, so that the energy consumption can be reduced while the occurrence of freezing is avoided. The application also discloses a device and an air conditioner for dehumidification control.

Description

Method and device for dehumidification control and air conditioner

Technical Field

The present application relates to the field of electrical appliance control technologies, and for example, to a method and an apparatus for dehumidification control, and an air conditioner.

Background

At present, when a dehumidifier or an air conditioner operates in a dehumidification mode, the temperature of a heat exchanger is reduced to accelerate the condensation of moisture in air on the surface of the heat exchanger, and the falling condensed water is collected by a water collecting box and is prevented from falling into a machine body. In the dehumidification process, along with the long-time operation of heat exchanger, the comdenstion water constantly condenses on the heat exchanger surface, and the heat exchanger has frozen risk, freezes the heat transfer speed of back heat exchanger and reduces, influences dehumidification efficiency and still can increase the energy consumption simultaneously. In the prior art, the freezing is prevented by detecting the temperature of the coil and controlling the temperature of the coil to be greater than or equal to a certain temperature value.

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: the anti-freezing mode is started when the dehumidifier is not frozen due to the fact that anti-freezing misjudgment is performed, dehumidification efficiency is reduced, and energy consumption is increased.

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 and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended to be a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a method and a device for dehumidification control and an air conditioner, and aims to solve the technical problem that the dehumidification efficiency is reduced due to misjudgment of freezing prevention in the prior art.

In some embodiments, the method comprises:

monitoring the weight change of the water collecting tank in the dehumidification process;

and when the change of the weight of the water collecting tank meets a first condition, starting an anti-freezing mode.

In some embodiments, the apparatus comprises: a packet processor and a memory storing program instructions, the processor being configured to, when executing the program instructions, perform the method for dehumidification control described above.

In some embodiments, the air conditioner includes the above-described apparatus for dehumidification control.

The method and the device for dehumidification control and the air conditioner provided by the embodiment of the disclosure can achieve the following technical effects:

before the coil pipe of dehumidification equipment freezes, a large amount of hydrones condense on the coil pipe, reduce dehumidification efficiency, through the weight that detects collection comdenstion water catch bowl, confirm the weight change of comdenstion water to this change judges dehumidification efficiency, improves and judges whether dehumidification equipment has the accuracy of the risk of freezing, when weight change satisfies first condition, in time opens and prevents freezing the operation, can enough avoid taking place to freeze and can reduce the energy consumption simultaneously.

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 in the accompanying drawings, which correspond to the accompanying drawings and not in a limiting sense, in which elements having the same reference numeral designations represent like elements, and in which:

FIG. 1 is a schematic diagram of a method for dehumidification control provided by an embodiment of the present disclosure;

fig. 2 is a schematic diagram of an apparatus for dehumidification control according to an embodiment of the present disclosure.

Detailed Description

So that the manner in which the features and advantages of the embodiments of the present disclosure can be understood in detail, a more particular description of the embodiments of the disclosure, briefly summarized above, may be had by reference to the appended drawings, which are included to illustrate, but are not intended to limit the embodiments of the disclosure. 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 claims of the embodiments of the disclosure and in the drawings described above 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 as appropriate for the embodiments of the disclosure described herein. 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. E.g., a and/or B, represents: a or B, or A and B.

Fig. 1 is a schematic diagram of a method for dehumidification control according to an embodiment of the present disclosure, the method including the steps of:

s101, monitoring the weight change of the water collecting tank in the dehumidification process.

The method of the present disclosure is used in a dehumidification apparatus, for example: a dehumidifier or an air conditioner with a dehumidifying function. This application is equipped with gravity sensor in the water catch bowl bottom that is used for collecting the comdenstion water for detect the weight of water catch bowl.

In some embodiments, the dehumidification apparatus detects a change in weight of the water collection sump in real time. In some embodiments, the dehumidification device detects a change in weight of the sump at set intervals.

Alternatively, the set time is determined according to the operation time of the dehumidification mode, that is, the time interval for detecting the weight of the collected water is varied as the dehumidification mode is operated. The longer the running time is, the smaller the setting time value is. Along with the operation of the dehumidification process, more and more condensate water is attached to the coil pipe and is easier to freeze, so that the time interval for detecting the weight of the water collecting tank is reduced, and the anti-freezing mode is started in time to avoid freezing.

Optionally, the set time is determined according to the indoor humidity when the dehumidification mode is turned on. The larger the indoor humidity is, the smaller the setting time is. When the dehumidification equipment runs at the same operating parameter, the higher the indoor humidity is, the faster the condensed water is condensed, the more easily the condensed water is frozen in a short time, a smaller time interval is adopted when the weight of the water collection tank is detected, and an anti-freezing mode is started to avoid freezing.

Optionally, the set time is determined according to the operation time of the dehumidification mode and the indoor humidity when the dehumidification mode is turned on.

S102, when the change of the weight of the water collecting tank meets a first condition, starting an anti-freezing mode.

Wherein the change in the weight of the water collection tank is a change value in the weight of the water collection tank, a rate of change in the weight of the water collection tank, or a tendency of an increase in the weight of the water collection tank per unit time.

In some embodiments, the first condition comprises: the change value of the weight of the water collecting tank is larger than or equal to a set threshold value, namely when the weight of the collected condensed water is larger than or equal to the set threshold value, the dehumidification process is operated for a long time, the indoor humidity is close to the target humidity, the anti-freezing mode is controlled to be started, so that the phenomenon that the excessive condensed water is attached to the surface of the coil pipe to be frozen is avoided, and meanwhile, the dehumidification can be continuously carried out.

In some embodiments, the first condition comprises: the change value of the weight of the water collecting tank in the set time is small or equal to the set threshold value, namely the condensate water generating rate is small or equal to the set threshold value, the condensing efficiency is low, the excessive condensate water is judged to be attached to the surface of the coil pipe to influence the condensing rate, the freezing risk exists, and the anti-freezing mode is controlled to be started in time.

In some embodiments, the first condition comprises: the rate of change of the sump weight is less than or equal to a set threshold. As the dehumidification mode is operated, the indoor humidity is decreased, and although the weight of the sump is increased, the mass of the condensed water generated per unit time is gradually decreased, that is, the increasing tendency of the weight of the sump is slowed down. Wherein the change rate is a difference value between a rate of weight increase of the water tank in a current unit time and a rate of weight increase of the water tank in a previous unit time in the dehumidification mode. For example, when the rate of change is equal to zero, it may be determined that the coil of the dehumidification device has frozen. Therefore, when the change rate of the weight of the water collecting tank is smaller than or equal to the set threshold value, the freezing prevention mode is started, so that the freezing can be effectively prevented in time.

In some embodiments, the method further comprises: when dehumidification is started, acquiring initial environment humidity; the set threshold is determined based on the initial ambient humidity and the set target humidity.

In some embodiments, the target humidity is set by the user himself according to his needs. In some embodiments, when the dehumidifying device is an air conditioner, after the user sets the target temperature, the air conditioner determines the target humidity according to the target temperature set by the user, so as to improve the comfort level of the indoor environment.

In some embodiments, the set threshold is determined based on a ratio of the initial ambient humidity and the target humidity.

In some embodiments, the set threshold is determined based on a difference between the initial ambient humidity and the target humidity.

Along with the operation of the dehumidification process, the freezing is not easy to generate in the early stage of the dehumidification, the risk of the freezing is increased after the dehumidification process is operated for a half, and the corresponding time for judging the freezing can be determined according to the ratio or the difference between the initial environment humidity and the target humidity, so that the accuracy for determining the set threshold value is improved, and the anti-freezing operation is timely and effectively performed.

In some embodiments, the set threshold is determined based on a difference and a ratio of the initial ambient humidity and the target humidity. Optionally, the difference and the ratio between the initial ambient humidity and the target humidity and the set threshold have the following relationship:

optionally, V is a set threshold; t1 is the initial ambient humidity; t2 is the target humidity; and a is an adjusting coefficient for setting a threshold value. In one embodiment, the initial ambient humidity T1 is 80% and the target humidity T2 is 20%, and the obtained set threshold corresponds to the weight change of the water collection tank under the condition that the ambient humidity is 35%.

In some embodiments, the set threshold may be different for different amounts of dehumidification per unit time based on the operational parameters of the dehumidification device. Therefore, the set threshold is determined based on the difference between the initial ambient humidity and the target humidity and the ratio, and is determined by combining the fan speed, the compressor frequency and the opening degree of the throttle valve. Optionally, the fan and the maximum rotation speed operate in the dehumidification process, the compressor operates at the maximum rated frequency, and the opening of the throttle valve is the set opening. According to different hardware parameters of the dehumidifying equipment, the maximum rotating speed of the fan, the maximum rated frequency of the compressor and the set opening degree of the throttle valve are different. Specifically, the adjusting coefficient of the set threshold is determined according to the rotating speed of the fan, the frequency of the compressor and the opening degree of the throttle valve, so that the set threshold is matched with the dehumidification capacity of the dehumidification equipment, and the accuracy of the anti-freezing control operation is improved.

In some embodiments, turning on the anti-freeze mode includes: and directly starting the anti-freezing operation. In order to accelerate the anti-freezing efficiency, the anti-freezing operation is directly started to slow down the condensation rate of the condensed water, so that the phenomenon that the excessive condensed water is attached to the coil pipe to cause freezing can be avoided.

In some embodiments, turning on the anti-freeze mode includes: and acquiring the environment humidity, and starting the anti-freezing operation when the environment humidity and the set target humidity meet a second condition. As the dehumidification process is carried out, the indoor humidity is reduced, and the dehumidification amount in unit time is correspondingly reduced, so that before the anti-freezing operation is started, the environmental humidity is judged to determine whether the efficiency is reduced caused by the adhesion of condensed water on the coil pipe.

In some embodiments, the second condition comprises: and the difference value between the current indoor humidity and the target humidity is greater than or equal to the preset deviation value. When the difference value between the ambient humidity and the set target humidity is smaller than the preset deviation value, determining that the main factor influencing the dehumidification efficiency is that the ambient humidity is low, and when the ambient humidity and the set target humidity meet a second condition, determining that the factor reducing the condensation rate is that the efficiency caused by the adhesion of condensed water on the coil pipe is reduced.

In some embodiments, the operation of preventing freezing includes one or more of reducing an operating frequency of the compressor, increasing a throttle opening, and reducing a fan speed.

Optionally, the anti-freezing operation only includes reducing the working frequency of the compressor and reducing the heat exchange efficiency to slow down the condensation speed of the moisture in the air on the surface of the coil.

Alternatively, the freeze prevention operation may simply include increasing the throttle opening and decreasing the steam pressure to increase the coil temperature.

Optionally, the anti-freezing operation only includes reducing the rotation speed of the fan, reducing the flow rate of air, reducing the amount of air in the dehumidification equipment, reducing water molecules attached to the coil pipe in unit time, and avoiding freezing.

Optionally, any two operations of reducing the working frequency of the compressor, increasing the opening of the throttle valve and reducing the rotating speed of the fan are adopted.

Optionally, a combination of reducing the working frequency of the compressor, increasing the opening of the throttle valve and reducing the rotation speed of the fan is adopted.

In some embodiments, before starting the anti-freezing operation, the method further comprises: one or more of an adjustment amount of an operating frequency of the compressor, an adjustment amount of an opening degree of the throttle valve, and an adjustment amount of a rotational speed of the fan are determined based on a weight change of the water collecting tank.

Alternatively, the determination is based on a variation value of the weight of the water collection sump. The system is preset with the water collecting tank weight change value range, the corresponding compressor work frequency regulating amount, the throttle valve opening regulating amount and the fan rotating speed regulating amount. The above determination process includes: and determining a set range in which the change value of the weight of the water collecting tank is positioned, and determining the corresponding adjustment quantity of the working frequency of the compressor, the adjustment quantity of the opening of the throttle valve and the adjustment quantity of the rotating speed of the fan according to the set range.

Alternatively, the determination is based on a change value of the weight of the sump or a change rate of the weight of the sump for a set time. Wherein, the weight change rate is respectively in inverse proportion to the adjustment quantity of the working frequency of the compressor, the adjustment quantity of the opening of the throttle valve and the adjustment quantity of the rotating speed of the fan. The above determination process includes: and acquiring preset adjusting parameters, and determining the corresponding regulating quantity of the working frequency of the compressor, the regulating quantity of the opening of the throttle valve and the regulating quantity of the rotating speed of the fan according to the change value of the weight of the water collecting tank and the adjusting parameters.

In the embodiment of the disclosure, before the coil pipe of the dehumidification device freezes, a large number of water molecules are condensed on the coil pipe, so that the dehumidification efficiency is reduced, the weight change of condensed water is determined by detecting the weight of the condensed water collecting tank, the dehumidification efficiency is determined according to the change, the accuracy of judging whether the dehumidification device has the risk of freezing is improved, when the weight change meets a first condition, the anti-freezing operation is started in time, so that the energy consumption can be reduced while the freezing is avoided.

The embodiment of the disclosure also provides a device for dehumidification control, which includes a processor and a memory storing program instructions, wherein the processor is configured to execute the above method for dehumidification control when executing the program instructions.

The embodiment of the disclosure also provides an air conditioner, which comprises the device for dehumidification control.

The embodiment of the disclosure also provides a dehumidifier which comprises the device for controlling dehumidification.

As shown in fig. 2, an apparatus for controlling dehumidification according to an embodiment of the present disclosure includes a processor (processor) 200 and a memory (memory) 201. Optionally, the apparatus may also include a Communication Interface (Communication Interface) 202 and a bus 203. The processor 200, the communication interface 202, and the memory 201 may communicate with each other through the bus 203. The communication interface 202 may be used for information transfer. The processor 200 may call logic instructions in the memory 201 to perform the method for dehumidification control of the above-described embodiments.

In addition, the logic instructions in the memory 201 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 201 is a computer-readable storage medium, and can 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 200 executes functional applications and data processing, i.e., implements the method for dehumidification control in the above-described embodiments, by executing program instructions/modules stored in the memory 201.

The memory 201 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. Further, the memory 201 may include a high-speed random access memory, and may also include a nonvolatile memory.

Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for dehumidification control.

Embodiments of the present disclosure provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the above-described method for dehumidification control.

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 portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other 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 for example only and are not limiting upon 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 one of 8230," does not exclude the presence of additional like elements in a process, method or device comprising 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 technical 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 only one type of logical functional division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or may be 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 position, or may be distributed on multiple 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 method for dehumidification control, comprising:

when the weight change of the water collecting tank meets a first condition, starting an anti-freezing mode;

wherein the first condition comprises: the change rate of the weight of the water collecting tank is less than or equal to a set threshold value, or the change value of the weight of the water collecting tank within a set time is less than or equal to the set threshold value;

wherein V is a set threshold; t1 is the initial ambient humidity; t2 is the target humidity; and a is an adjusting coefficient of a set threshold value, and is determined according to the rotating speed of the fan, the frequency of the compressor and the opening of the throttle valve.

2. The method of claim 1, wherein said turning on freeze protection mode comprises:

directly starting anti-freezing operation; alternatively, the first and second liquid crystal display panels may be,

and acquiring the ambient humidity, and starting the anti-freezing operation when the ambient humidity and the set target humidity meet a second condition.

3. The method of claim 2, wherein the freeze protection operation comprises one or more of reducing compressor operating frequency, increasing throttle opening, and reducing fan speed.

4. The method of claim 3, further comprising, prior to initiating the freeze prevention operation:

determining one or more of an adjustment amount of the compressor operating frequency, an adjustment amount of the throttle opening, and an adjustment amount of the fan rotation speed based on a change in weight of the water collection tank.

5. The method of claim 2, wherein the second condition comprises:

and the difference value between the current environment humidity and the target humidity is greater than or equal to a preset deviation value.

6. An apparatus for dehumidification control comprising a processor and a memory having stored thereon program instructions, wherein the processor is configured to perform the method for dehumidification control of any one of claims 1 to 5 when executing the program instructions.

7. An air conditioner characterized by comprising the method for dehumidification control as set forth in claim 6.