WO2022134530A1

WO2022134530A1 - Control method and device for dual-evaporator air conditioner and dual-evaporator air conditioner

Info

Publication number: WO2022134530A1
Application number: PCT/CN2021/104631
Authority: WO
Inventors: 孙小峰; 矫立涛; 冯景学; 尹义金
Original assignee: 青岛海尔空调器有限总公司; 青岛海尔空调电子有限公司; 海尔智家股份有限公司
Priority date: 2020-12-25
Filing date: 2021-07-06
Publication date: 2022-06-30
Also published as: CN112665204A; CN112665204B

Abstract

The present application relates to the technical field of smart home appliances. Disclosed is a control method for a dual-evaporator air conditioner, comprising: obtaining a first air gear of a first fan and a second air gear of a second fan; if the first air gear is greater than the second air gear, correcting the current operation frequency of a compressor according to the first air gear and the second air gear to obtain a target operation frequency, and correcting the current opening of a second regulation valve to obtain a target opening; and regulating the operation frequency of the compressor according to the target operation frequency, and regulating the opening of the second regulation valve according to the target opening. By optimizing the operation frequency control of the compressor of the dual-evaporator air conditioner and the flow control of the evaporator located at a low-air-gear air outlet, the uniformity of the air outlet temperature of two air outlets of the dual-evaporator air conditioner can be improved, thus improving the use experience of a user. Also disclosed in the present application are a control device for a dual-evaporator air conditioner, and a dual-evaporator air conditioner.

Description

Control method and device for dual-evaporator air conditioner, dual-evaporator air conditioner

This application is based on the Chinese patent application with the application number of 202011564299.5 and the filing date of December 25, 2020, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is incorporated herein by reference.

technical field

The present application relates to the technical field of smart home appliances, for example, to a control method and device for a dual-evaporator air conditioner, and a dual-evaporator air conditioner.

Background technique

The dual-evaporator air conditioner is an air conditioner that uses a compressor with two evaporators. The two evaporators are located at the left and right air outlets, so that the air is discharged from the left and right sides. For a dual-evaporator air conditioner with air outlet on the left and right sides, since the air outlet on the left and right sides can be independently set for the wind gear settings, it is easy to cause inconsistent left and right air supply gear positions. In order to ensure the reliability and safety of the dual-evaporator air conditioner during use, when the left and right air supply gears are inconsistent, the operating frequency of the compressor is usually controlled according to the lower air supply gear.

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:

When the left and right air supply positions of the dual-evaporator air conditioner are inconsistent, the operating frequency of the compressor is controlled according to the lower air supply position. If the temperature is too high (during cooling operation), the temperature difference between the left and right outlet air of the air conditioner is too large, resulting in poor user experience.

SUMMARY OF THE INVENTION

In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended to be an extensive review, nor to identify key/critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

The embodiments of the present disclosure provide a control method and device for a dual-evaporator air conditioner, and a dual-evaporator air conditioner, so as to solve the problem that when the left and right air supply gears of the current dual-evaporator air conditioner are inconsistent, the compression is adjusted according to the lower air supply gear. If the operating frequency of the air conditioner is controlled, it is easy to cause the temperature difference between the left and right outlet air of the air conditioner to be too large, resulting in poor user experience.

In some embodiments, a dual-evaporator air conditioner includes a compressor, a first evaporator and a second evaporator in communication with the compressor, a first fan located at an air outlet where the first evaporator is located, and an outlet located at an outlet where the second evaporator is located. The second fan of the tuyere, wherein the first evaporator is communicated with the first regulating valve, and the second evaporator is communicated with the second regulating valve; the control method for the double-evaporator air conditioner includes: obtaining a first wind speed of the first fan and the second wind speed of the second fan; when the first wind speed is greater than the second wind speed, according to the first wind speed and the second wind speed, correct the current operating frequency of the compressor to obtain the target operating frequency, and correct The current opening degree of the second regulating valve obtains the target opening degree; the operating frequency of the compressor is adjusted according to the target operating frequency, and the opening degree of the second regulating valve is adjusted according to the target opening degree.

In some embodiments, a control apparatus for a dual-evaporator air conditioner includes a processor and a memory storing program instructions, the processor is configured to perform the aforementioned control method for a dual-evaporator air conditioner when executing the program instructions.

In some embodiments, a dual evaporator air conditioner includes the aforementioned controls for a dual evaporator air conditioner.

The control method and device for a dual-evaporator air conditioner, and the dual-evaporator air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

When the left and right air supply positions of the dual-evaporator air conditioner are inconsistent, determine the second regulating valve connected to the evaporator located at the air outlet of the low wind gear, and correct the current compressor current according to the left and right wind gears (the first wind gear and the second wind gear). The operating frequency is obtained to obtain the target operating frequency, and the current opening of the second regulating valve is corrected to obtain the target opening, thereby adjusting the operating frequency of the compressor according to the target operating frequency, and adjusting the opening of the second regulating valve according to the target opening. In this way, by optimizing the operating frequency control of the compressor of the dual-evaporator air conditioner and the flow control of the evaporator located at the air outlet of the low-speed air conditioner, the uniformity of the air outlet temperature of the two air outlets of the dual-evaporator air conditioner can be improved, and the user's satisfaction can be improved. Use experience.

The foregoing general description and the following description are exemplary and explanatory only and are not intended to limit the application.

Description of drawings

One or more embodiments are exemplified by the accompanying drawings, which are not intended to limit the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, The drawings do not constitute a limitation of scale, and in which:

1 is a schematic structural diagram of a dual-evaporator air conditioner provided by an embodiment of the present disclosure;

2 is a schematic flowchart of a control method for a dual-evaporator air conditioner provided by an embodiment of the present disclosure;

3 is a schematic flowchart of a control method for a dual-evaporator air conditioner provided by an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a control device for a dual-evaporator air conditioner provided by an embodiment of the present disclosure.

Detailed ways

In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are for reference only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, numerous details are provided 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 simplified in order to simplify the drawings.

The terms "first", "second" and the like in the description and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for the purposes of implementing the embodiments of the disclosure described herein. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion.

Unless stated otherwise, the term "plurality" means two or more. 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 means: A or B. The term "and/or" is an associative relationship describing objects, indicating that three relationships can exist. For example, A and/or B, means: A or B, or, A and B three relationships.

1, the dual-evaporator air conditioner includes a compressor 1, a first evaporator 41 and a second evaporator 42 that communicate with the compressor 1, a first fan 51 located at the air outlet where the first evaporator 41 is located, and a The second fan 52 at the air outlet where the second evaporator 42 is located, wherein the first evaporator 41 communicates with the first regulating valve 61 , and the second evaporator 42 communicates with the second regulating valve 62 . The first fan 51 and the second fan 52 can be individually set for wind speed settings. In addition, the dual-evaporator air conditioner also includes a condenser 2, a throttle valve 3 and a three-way valve 7 that communicate with the compressor 1, the first evaporator 41 and the second evaporator 42, wherein the two ports of the three-way valve 7 It is respectively connected with the flow path where the first evaporator 41 is located and the flow path where the second evaporator 42 is located, and the third interface is connected with the compressor, so that the first evaporator 41 or the second evaporator 42 can be connected to the dual evaporators independently It operates independently in the air conditioning system.

With reference to FIG. 2 , an embodiment of the present disclosure provides a control method for a dual-evaporator air conditioner, which includes the following steps:

S201: Obtain the first wind speed of the first fan and the second wind speed of the second fan.

In the dual-evaporator air conditioner, the first fan and the second fan are separately set for the wind speed. Therefore, in order to solve the problem that the left and right air supply positions of the dual-evaporator air conditioner are inconsistent, the operating frequency of the compressor is adjusted according to the lower air supply position. Control, it is easy to make the air outlet temperature on the side with high wind speed to be low or high, resulting in the problem that the air temperature difference between the left and right of the air conditioner is too large, and the first wind gear of the first fan and the second wind gear of the second fan are obtained. , to control the dual evaporator air conditioner according to the first wind speed and the second wind speed.

S202: In the case that the first wind speed is greater than the second wind speed, according to the first wind speed and the second wind speed, correct the current operating frequency of the compressor to obtain the target operating frequency, and correct the current opening of the second regulating valve to obtain the target opening.

S203: Adjust the operating frequency of the compressor according to the target operating frequency, and adjust the opening degree of the second regulating valve according to the target opening degree.

With the control method for a dual-evaporator air conditioner provided by the embodiment of the present disclosure, when the left and right air supply gears of the dual-evaporator air conditioner are inconsistent, a second regulating valve that communicates with the evaporator located at the air outlet of the low wind gear is determined, according to the left and right air gears (first wind gear and second wind gear) correct the current operating frequency of the compressor to obtain the target operating frequency, and correct the current opening of the second regulating valve to obtain the target opening, so as to adjust the compressor’s operating frequency according to the target operating frequency operating frequency, and adjust the opening degree of the second regulating valve according to the target opening degree. In this way, by optimizing the operating frequency control of the compressor of the dual-evaporator air conditioner and the flow control of the evaporator located at the air outlet of the low-speed air conditioner, the uniformity of the air outlet temperature of the two air outlets of the dual-evaporator air conditioner can be improved, and the user's satisfaction can be improved. Use experience.

In some embodiments, correcting the current operating frequency of the compressor according to the first wind speed and the second wind speed to obtain the target operating frequency includes: obtaining a wind range difference between the first wind speed and the second wind speed; using the wind speed difference The value corrects the current operating frequency of the compressor to obtain the target operating frequency.

In practical application, the strong wind gear is 5 gears, the high wind gear is 4 gears, the medium wind gear is 3 gears, the low wind gear is 2 gears, and the silent wind gear is 1 gear. When the first wind speed is k ₁ and the second wind speed is k ₂ , the wind speed difference Δk=|k ₁ −k ₂ |.

Optionally, correcting the current operating frequency of the compressor to obtain the target operating frequency by using the wind range difference includes:

D _n =D _n-1 -n×Δk

Among them, D _n is the target operating frequency of the compressor, D _n-1 is the current operating frequency of the compressor, n is the operating frequency adjustment parameter, and Δk is the wind gear difference. The value range of n is [2Hz, 6Hz], for example, 2Hz (Hertz), 3Hz, 4Hz, 5Hz, 6Hz.

D _n =D _n-1 -n×Δk+C

Among them, D _n is the target operating frequency of the compressor, D _n-1 is the current operating frequency of the compressor, n is the operating frequency adjustment parameter, Δk is the wind gear difference, and C is the operating frequency compensation value.

On the basis of correcting the current operating frequency of the compressor by using the wind gear difference, the current operating frequency of the compressor is further adjusted by using the operating frequency compensation value. By optimizing the operating frequency control of the compressor of the dual-evaporator air conditioner, the The uniformity of the air temperature of the two air outlets of the evaporator air conditioner.

Optionally, the control method for the dual-evaporator air conditioner further includes determining an operating frequency compensation value, which specifically includes: determining an operation mode of the dual-evaporator air conditioner, and obtaining the ambient temperature of the environment where the dual-evaporator air conditioner is located; The corresponding relationship between the ambient temperature, the difference between the wind gear and the operating frequency compensation value determines the operating frequency compensation value.

The following table 1 shows the first correspondence table of ambient temperature, wind gear difference and operating frequency compensation value in an optional cooling mode:

Table 1: The first correspondence table

When the dual-evaporator air conditioner is in the cooling mode, after obtaining the ambient temperature T and the wind range difference Δk, the operating frequency compensation value C (unit: Hz) can be determined according to the above-mentioned first correspondence table. For example, when the obtained ambient temperature T is 28°C and the wind range difference value Δk is 2, the operating frequency compensation value C is determined to be 2 Hz according to the above-mentioned first correspondence table; the obtained ambient temperature T is 38°C and the wind range difference value Δk is 2 , the operating frequency compensation value C is determined to be 3 Hz according to the above-mentioned first correspondence table.

The following table 2 shows a second correspondence table of ambient temperature, wind gear difference and operating frequency compensation value in an optional heating mode:

Table 2: Second Correspondence Table

When the dual-evaporator air conditioner is in the heating mode, after obtaining the ambient temperature T and the wind range difference Δk, the operating frequency compensation value C can be determined according to the above-mentioned second correspondence table. For example, when the obtained ambient temperature T is -5°C and the wind range difference Δk is 2, the operating frequency compensation value C is determined to be 4 Hz according to the above-mentioned second correspondence table; the obtained ambient temperature T is 13°C and the wind range difference Δk is 2, the operating frequency compensation value C is determined to be 2 Hz according to the above-mentioned second correspondence table.

When the current operating frequency _Dn-1 of the compressor is not the minimum operating frequency in the current operating mode, the current operating frequency of the compressor is corrected according to the above-mentioned correction method provided by the embodiment of the present disclosure to obtain the target operating frequency; when the current operating frequency of the compressor is When the operating frequency D _n-1 is the minimum operating frequency in the current operating mode, the compressor is controlled to keep running at the current operating frequency, and only the opening degree of the regulating valve is adjusted.

In the embodiment of the present disclosure, after the dual-evaporator air conditioner is turned on, the wind range difference Δk is detected, and when the wind range difference Δk=0, the compressor of the dual-evaporator air conditioner operates according to the original control logic; when the wind range difference Δk is When > 0, the current operating frequency of the compressor is corrected by the difference of the wind speed, and the differential air supply method is activated, so as to improve the temperature difference between the left and right outlet air of the dual-evaporator air conditioner when the left and right wind speed is inconsistent, and improve the comfort of the user when using the air conditioner. experience.

In some embodiments, correcting the current opening degree of the second regulating valve to obtain the target opening degree according to the first wind gear and the second wind gear includes: obtaining a wind gear difference between the first wind gear and the second wind gear; The gear difference value corrects the current opening degree of the second regulating valve to obtain the target opening degree.

Optionally, adjusting the current opening degree of the second regulating valve to obtain the target opening degree by using the wind range difference includes:

Y _n =Y _n-1 -m×Δk

Wherein, Y _n is the target opening of the second regulating valve, Y _n-1 is the current opening of the second regulating valve, m is the opening adjustment parameter, and Δk is the wind range difference. The opening range of the first regulating valve and the second regulating valve is 0～f, and m=0.1f. Each time the dual-evaporator air conditioner is powered on, the initial opening degree (ie Y _n-1 ) of the first regulating valve and the second regulating valve is 0.8f.

Optionally, correcting the current opening degree of the second regulating valve to obtain the target opening degree according to the first wind gear and the second wind gear includes: obtaining a wind gear difference between the first wind gear and the second wind gear; using the wind gear difference The value and the target operating frequency correct the current opening of the second regulating valve to obtain the target opening.

Optionally, correcting the current opening of the second regulating valve to obtain the target opening by using the wind range difference and the target operating frequency includes:

Y _n =Y _n-1 -m×Δk+α×D _n

Among them, Y _n is the target opening of the second regulating valve, Y _n-1 is the current opening of the second regulating valve, m is the opening adjustment parameter, Δk is the wind speed difference, α is the opening correction coefficient, D _n is the target operating frequency of the compressor.

On the basis of correcting the current opening of the second regulating valve by using the difference in wind speed, and comprehensively considering the influence of the change of the operating frequency of the compressor on the air temperature of the two air outlets of the dual-evaporator air conditioner, based on the target operating frequency of the compressor, the By further adjusting the current opening of the second regulating valve, by optimizing the flow control of the double-evaporator air conditioner located at the low-speed air outlet, the air temperature uniformity of the two air outlets of the dual-evaporator air conditioner can be improved.

Optionally, the control method for the dual-evaporator air conditioner further includes determining an opening correction coefficient, which specifically includes: obtaining an operating frequency ratio between the current operating frequency and the maximum operating frequency of the compressor; The corresponding relationship determines the opening correction coefficient.

Among them, the opening correction coefficient is positively correlated with the operating frequency ratio. The following table 3 shows an optional third correspondence table between the operating frequency ratio and the opening correction coefficient:

Table 3: The third correspondence table

运行频率比值βOperating frequency ratio β	开度修正系数αOpening correction coefficient α
≤0.5≤0.5	0.40.4
0.5～0.80.5～0.8	0.60.6
≥0.8≥0.8	0.80.8

After the operating frequency ratio β is obtained, the opening degree correction coefficient α can be obtained according to the above-mentioned third correspondence table. For example, when the operating frequency ratio β is obtained as 0.3, the opening correction coefficient α is determined to be 0.4 according to the third correspondence table; when the operating frequency ratio β is obtained as 0.7, the opening correction coefficient α is determined according to the third correspondence table as: 0.6.

In the embodiment of the present disclosure, after the dual-evaporator air conditioner is turned on, the wind range difference Δk is detected. When the wind range difference Δk=0, the regulating valve of the dual-evaporator air conditioner is not adjusted; when the wind range difference Δk>0, The current opening of the second regulating valve is corrected by the difference in the wind range, and the differential air supply method is activated, thereby improving the temperature difference between the left and right outlet air of the dual-evaporator air conditioner when the left and right wind ranges are inconsistent, and improving the comfort and user experience of the user when using the air conditioner.

With reference to FIG. 3 , an embodiment of the present disclosure provides a control method for a dual-evaporator air conditioner, including the following steps:

S301: Obtain the first wind speed of the first fan and the second wind speed of the second fan.

S302: In the case that the first wind speed is greater than the second wind speed, according to the first wind speed and the second wind speed, correct the current operating frequency of the compressor to obtain the target operating frequency, and correct the current opening of the second regulating valve to obtain the target opening.

S303: Determine whether the target operating frequency of the compressor is less than the current operating frequency.

S304: When the target operating frequency of the compressor is less than the current operating frequency, adjust the operating frequency of the compressor according to the target operating frequency, and after the first preset time period, adjust the opening degree of the second regulating valve according to the target opening degree.

Here, the value range of the first preset duration is [1min, 3min], for example, 1min (minute), 2min, 3min. When the operating frequency of the compressor decreases, in order to ensure the proper exhaust temperature and heat exchange efficiency of the air conditioner, the opening of the regulating valve will also decrease. Therefore, if the opening of the second regulating valve decreases first, the pressure of the air-conditioning system will increase, resulting in an increase in the exhaust temperature of the air-conditioning system. Therefore, when the target operating frequency of the compressor is less than the current operating frequency, the first preset duration of the operating frequency of the compressor is adjusted according to the target operating frequency, and then the opening of the second regulating valve is adjusted, which can improve the operation of the dual-evaporator air conditioner. reliability.

S305: When the target operating frequency of the compressor is greater than the current operating frequency, adjust the opening degree of the second regulating valve according to the target opening degree, and after the second preset time period, adjust the operating frequency of the compressor according to the target operating frequency.

Here, the value range of the second preset duration is [30s, 80s], for example, 30s (seconds), 40s, 50s, 60s, 70s, 80s. When the operating frequency of the compressor needs to be increased, the opening degree of the second regulating valve is adjusted first, which can effectively reduce the occurrence of the high temperature protection phenomenon of the exhaust gas caused by the increase of the system pressure caused by the frequency up of the compressor.

In the embodiment of the present disclosure, by optimizing the operating frequency control of the compressor of the dual-evaporator air conditioner and the flow control of the evaporator located at the air outlet of the low-speed air conditioner, the uniformity of the air outlet temperature of the two air outlets of the dual-evaporator air conditioner can be improved. , improve the user experience; at the same time, by limiting the operating frequency of the compressor and the adjustment sequence of the opening of the second regulating valve, it can effectively reduce the occurrence of high temperature protection of the exhaust gas caused by the increase of the system pressure caused by the compressor frequency up, which can improve the Reliability of dual evaporator air conditioning operation.

In conjunction with the embodiment of the present disclosure shown in FIG. 4 , a control device for a dual-evaporator air conditioner is provided, which includes a processor (processor) 400 and a memory (memory) 401 , and may also include a communication interface (Communication Interface) 402 and a bus 403 . The processor 400 , the communication interface 402 , and the memory 401 can communicate with each other through the bus 403 . Communication interface 402 may be used for information transfer. The processor 400 may invoke the logic instructions in the memory 401 to execute the control method for the dual-evaporator air conditioner of the above-mentioned embodiment.

In addition, the above-mentioned logic instructions in the memory 401 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

As a computer-readable storage medium, the memory 401 can be used to store software programs and computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 400 executes the function application and data processing by running the program instructions/modules stored in the memory 401, that is, the control method for the dual-evaporator air conditioner in the above method embodiment is implemented.

The memory 401 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 401 may include high-speed random access memory, and may also include non-volatile memory.

Embodiments of the present disclosure provide a dual-evaporator air conditioner, including the above-mentioned control device for a dual-evaporator air conditioner.

Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions, where the computer-executable instructions are configured to execute the foregoing control method for a dual-evaporator air conditioner.

Embodiments of the present disclosure provide a computer program product, where the computer program product includes a computer program stored on a computer-readable storage medium, and the computer program includes program instructions that, when executed by a computer, cause all The computer executes the above-described control method for a dual-evaporator air conditioner.

The above-mentioned computer-readable storage medium may be a transient computer-readable storage medium, and may also be a non-transitory computer-readable storage medium.

The technical solutions of the embodiments of the present disclosure may be embodied in the form of software products, and the computer software products are stored in a storage medium and include one or more instructions to enable a computer device (which may be a personal computer, a server, or a network equipment, etc.) to execute all or part of the steps of the methods described in the embodiments of the present disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: U disk, removable hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc. A medium that can store program codes, and can also be a transient storage medium.

The foregoing description and drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, process, and other changes. The examples represent only possible variations. Unless expressly required, individual components and functions are optional and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of the disclosed embodiments includes the full scope of the claims, along with all available equivalents of the claims. When used in this application, although the terms "first," "second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without changing the meaning of the description, a first element could be termed a second element, and similarly, a second element could be termed a first element, so long as all occurrences of "the first element" were consistently renamed and all occurrences of "the first element" were named consistently The "second element" can be renamed consistently. The first element and the second element are both elements, but may not be the same element. Also, the terms used in this application are used to describe the embodiments only and not to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a" (a), "an" (an) and "the" (the) are intended to include the plural forms as well, unless the context clearly dictates otherwise. . Similarly, the term "and/or" as used in this application is meant to include any and all possible combinations of one or more of the associated listings. Additionally, when used in this application, the term "comprise" and its variations "comprises" and/or including and/or the like refer to stated features, integers, steps, operations, elements, and/or The presence of a component does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groupings of these. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, or device that includes the element. Herein, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, reference may be made to the description of the method section for relevant parts.

Those skilled in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. Skilled artisans may use different methods for implementing the described functionality for each particular application, but such implementations should not be considered beyond the scope of the disclosed embodiments. The skilled person can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units can refer to the corresponding processes in the foregoing method embodiments, and details are not repeated here.

In the embodiments disclosed herein, the disclosed methods and products (including but not limited to apparatuses, devices, etc.) may be implemented in other ways. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units may only be a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be combined Either it can be integrated into another system, or some features can be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. This embodiment may be implemented by selecting some or all of the units according to actual needs. In addition, each functional unit in the embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be 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 that contains one or more functions for implementing the specified logical function(s) executable instructions. In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks 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 descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, operations or steps corresponding to different blocks may also occur in different sequences than those disclosed in the description, and sometimes there is no specific relationship between different operations or steps. order. For example, two consecutive operations or steps may, in fact, be performed substantially concurrently, or they may sometimes be performed 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 in special purpose hardware-based systems that perform the specified functions or actions, or special purpose hardware implemented in combination with computer instructions.

Claims

A control method for a dual-evaporator air conditioner, characterized in that, the dual-evaporator air conditioner comprises a compressor, a first evaporator and a second evaporator communicated with the compressor, a compressor located in the first evaporator The first fan at the air outlet, and the second fan at the air outlet where the second evaporator is located, wherein the first evaporator is communicated with the first regulating valve, and the second evaporator and the second regulating valve connected, the control method includes:

obtaining a first wind speed of the first fan and a second wind speed of the second fan;

When the first wind speed is greater than the second wind speed, according to the first wind speed and the second wind speed, correct the current operating frequency of the compressor to obtain a target operating frequency, and correct the the current opening of the second regulating valve to obtain the target opening;

The operating frequency of the compressor is adjusted according to the target operating frequency, and the opening degree of the second regulating valve is adjusted according to the target opening degree.
The control method according to claim 1, characterized in that, correcting the current operating frequency of the compressor according to the first wind speed and the second wind speed to obtain a target operating frequency, comprising:

obtaining a wind gear difference between the first wind gear and the second wind gear;

The current operating frequency of the compressor is corrected using the wind range difference value to obtain the target operating frequency.
The control method according to claim 2, wherein the modifying the current operating frequency of the compressor by using the wind range difference value to obtain the target operating frequency comprises:

D n =D n-1 -n×Δk+C

Among them, D n is the target operating frequency of the compressor, D n-1 is the current operating frequency of the compressor, n is the operating frequency adjustment parameter, Δk is the wind gear difference, and C is the operating frequency compensation value.
The control method according to claim 1, wherein correcting the current opening degree of the second regulating valve to obtain a target opening degree according to the first wind speed and the second wind speed, comprising:

obtaining a wind gear difference between the first wind gear and the second wind gear;

The current opening degree of the second regulating valve is corrected using the wind range difference value to obtain the target opening degree.
The control method according to claim 4, wherein the adjusting the current opening degree of the second regulating valve by using the wind range difference value to obtain the target opening degree comprises:

Y n =Y n-1 -m×Δk

Wherein, Y n is the target opening of the second regulating valve, Y n-1 is the current opening of the second regulating valve, m is the opening adjustment parameter, and Δk is the wind range difference.
The control method according to claim 1, wherein correcting the current opening degree of the second regulating valve to obtain a target opening degree according to the first wind speed and the second wind speed, comprising:

obtaining a wind gear difference between the first wind gear and the second wind gear;

The current opening degree of the second regulating valve is corrected using the wind range difference value and the target operating frequency to obtain the target opening degree.
The control method according to claim 6, wherein the modifying the current opening degree of the second regulating valve to obtain the target opening degree by using the wind range difference value and the target operating frequency comprises:

Y n =Y n-1 -m×Δk+α×D n

Among them, Y n is the target opening of the second regulating valve, Y n-1 is the current opening of the second regulating valve, m is the opening adjustment parameter, Δk is the wind speed difference, α is the opening correction coefficient, D n is the target operating frequency of the compressor.
The control method according to any one of claims 1 to 7, wherein the operating frequency of the compressor is adjusted according to the target operating frequency, and the second regulating valve is adjusted according to the target opening degree opening, including:

When the target operating frequency of the compressor is less than the current operating frequency, the operating frequency of the compressor is adjusted according to the target operating frequency, and after a first preset time period, the operating frequency of the compressor is adjusted according to the target opening The opening of the second regulating valve;

When the target operating frequency of the compressor is greater than the current operating frequency, the opening degree of the second regulating valve is adjusted according to the target opening degree, and after a second preset time period, the opening degree of the second regulating valve is adjusted according to the target operating frequency The operating frequency of the compressor.
A control device for a dual-evaporator air conditioner, comprising a processor and a memory storing program instructions, wherein the processor is configured to execute any one of claims 1 to 8 when executing the program instructions. A control method for a dual-evaporator air conditioner.
A dual-evaporator air conditioner is characterized by comprising the control device for the dual-evaporator air conditioner as claimed in claim 9 .