WO2020034472A1

WO2020034472A1 - Control method and control apparatus for multi-split air conditioner

Info

Publication number: WO2020034472A1
Application number: PCT/CN2018/115669
Authority: WO
Inventors: 王建营; 曹志高; 安超; 徐雪峰; 顾超
Original assignee: 青岛海尔空调电子有限公司
Priority date: 2018-08-16
Filing date: 2018-11-15
Publication date: 2020-02-20
Also published as: CN110836433A

Abstract

Disclosed are a control method and control apparatus for a multi-split air conditioner, belonging to the technical field of air conditioners. The method comprises: controlling an air conditioner to operate a single indoor unit; acquiring a cooling capacity of the single indoor unit and an outdoor ambient temperature; determining, according to the cooling capacity and the outdoor ambient temperature, the maximum frequency of operation of a compressor; and controlling the compressor to operate at a frequency less than or equal to the maximum frequency. According to the control method and control apparatus for a multi-split air conditioner of the present invention, when a multi-split air conditioner only operates a single indoor unit, the maximum frequency of operation of a compressor is determined according to a cooling capacity of the operated single indoor unit and an outdoor ambient temperature, and controlling the compressor to operate at a frequency less than or equal to the maximum frequency can effectively avoid excessively high frequency of operation of the compressor, thereby maintaining the stability of system pressure.

Description

Control method and control device of one drag multiple air conditioner

This application is based on a Chinese patent application with an application number of 201810933354.X and an application date of August 16, 2018, and claims the priority of the Chinese patent application. The entire contents of the Chinese patent application are incorporated herein by reference.

Technical field

The present invention relates to the technical field of air conditioners, and in particular, to a control method and a control device for a multi-air conditioner.

Background technique

For a small one-to-many air conditioner, when operating a single indoor unit, the maximum operating frequency of the compressor must be controlled. In the prior art, when a one-to-many air conditioner runs only a single indoor unit, the compressor operating frequency is controlled only based on the cooling capacity of the indoor unit, and there is no upper limit; or it is only based on the cooling capacity of the indoor unit. Size to specify the upper limit of the compressor operating frequency, which will cause the compressor operating frequency to be too high, which in turn will cause the system pressure to be too high.

Summary of the Invention

The embodiment of the invention provides a control method and a control device for a multi-air conditioner. In order to have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not a general overview, nor is it intended to identify key / important constituent elements or to describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.

According to a first aspect of the embodiments of the present invention, a method for controlling a multi-air conditioner is provided, including: controlling the air conditioner to operate a single indoor unit; obtaining the cooling capacity and outdoor ambient temperature of a single indoor unit; The ambient temperature determines the maximum frequency at which the compressor operates; the compressor is controlled to operate at a frequency less than or equal to the maximum frequency.

When the YTO multi-air conditioner only operates a single indoor unit, the maximum frequency of the compressor is determined based on the cooling capacity of the single indoor unit and the outdoor ambient temperature. The compressor is controlled to operate at a frequency less than or equal to the maximum frequency. , Can effectively avoid the compressor running frequency is too high, thereby maintaining the system pressure stability.

Optionally, determining the maximum frequency of the compressor operation according to the cooling capacity and the outdoor environment temperature includes: when the outdoor environment temperature is the same, the maximum frequency of the compressor operation is positively related to the cooling capacity.

When the outdoor ambient temperature is the same, the larger the cooling capacity of a single indoor unit is, the larger the maximum frequency of the determined compressor operation is. While satisfying the user's comfort, it can effectively prevent the compressor operating frequency from being too high, thereby maintaining a stable system pressure.

Optionally, determining the maximum frequency of the compressor operation according to the cooling capacity and the outdoor environment temperature includes: when the cooling capacity is the same, in the cooling mode, the maximum frequency of the compressor operation is positively related to the outdoor environment temperature.

When the cooling capacity of a single indoor unit is the same, in the cooling mode, the higher the outdoor ambient temperature, the greater the maximum frequency of the determined compressor operation. While meeting the user's normal cooling needs, it can effectively avoid the compressor operating frequency being too high. This keeps the system pressure stable.

Optionally, determining the maximum frequency of the compressor operation according to the cooling capacity and the outdoor environment temperature further includes: when the cooling capacity is the same, in the heating mode, the maximum frequency of the compressor operation is negatively related to the outdoor environment temperature.

When the cooling capacity of a single indoor unit is the same, in the heating mode, the lower the outdoor ambient temperature, the greater the maximum frequency of the determined compressor operation. While meeting the user's normal heating requirements, it can effectively prevent the compressor operating frequency from being too high. High, thus keeping the system pressure stable.

According to a second aspect of the embodiments of the present invention, a control device for a multi-air conditioner is provided, including: a first control module for controlling an air conditioner to operate a single indoor unit; and a first acquisition module for acquiring a single indoor unit Cooling capacity and outdoor ambient temperature; the first determining module is used to determine the maximum frequency of the compressor operation according to the cooling capacity and the outdoor environment temperature; the second control module is used to control the compressor to operate at a frequency less than or equal to the maximum frequency.

When the first control module controls the air conditioner to operate only a single indoor unit, the first determination module determines the maximum frequency of the compressor operation according to the cooling capacity of the single indoor unit and the outdoor ambient temperature obtained by the first acquisition module, and the second control module Controlling the compressor to run at a frequency less than or equal to the maximum frequency can effectively prevent the compressor from running too high, thereby maintaining a stable system pressure.

Optionally, the first determining module is specifically configured to determine the maximum frequency of the compressor operation according to the cooling capacity and the outdoor environment temperature; wherein, when the outdoor environment temperature is the same, the maximum frequency of the compressor operation is positively related to the cooling capacity.

When the outdoor ambient temperature is the same, the larger the cooling capacity of a single indoor unit is, the larger the maximum frequency of the compressor operation determined by the first determination module is. While satisfying the user's comfort, it can effectively avoid the compressor operating frequency being too high, thereby maintaining System pressure is stable.

Optionally, the first determining module is specifically configured to determine the maximum frequency of the compressor operation according to the cooling capacity and the outdoor environment temperature; wherein when the cooling capacity is the same, in the cooling mode, the maximum frequency of the compressor operation and the outdoor environment Temperature is positively correlated.

When the cooling capacity of a single indoor unit is the same, the higher the outdoor temperature in the cooling mode, the greater the maximum frequency of the compressor determined by the first determination module. While meeting the normal cooling needs of the user, the compressor can be effectively avoided. The frequency is too high to keep the system pressure stable.

Optionally, the first determining module is specifically configured to determine the maximum frequency of the compressor operation according to the cooling capacity and the outdoor ambient temperature; wherein when the cooling capacity is the same, in the heating mode, the maximum frequency of the compressor operation and the outdoor frequency Ambient temperature is inversely related.

When the cooling capacity of a single indoor unit is the same, in the heating mode, the lower the outdoor ambient temperature, the larger the maximum frequency of the compressor determined by the first determination module, which can effectively avoid compression while meeting the user's normal heating requirements. The running frequency of the machine is too high, so as to keep the system pressure stable.

The technical solution provided by the embodiment of the present invention may include the following beneficial effects:

According to the control method and control device of the multi-air conditioner of the present invention, when the multi-air conditioner only operates a single indoor unit, the maximum frequency of the compressor is based on the cooling capacity of the single indoor unit and the outdoor ambient temperature. It is determined that controlling the compressor to run at a frequency less than or equal to the maximum frequency can effectively prevent the compressor from running too high, thereby maintaining a stable system pressure.

It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and should not limit the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings herein are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description serve to explain the principles of the present invention.

Fig. 1 is a schematic flowchart of a method for controlling a multi-air conditioner according to an exemplary embodiment;

Fig. 2 is a structural block diagram of a control device for a multi-air conditioner according to an exemplary embodiment.

detailed description

The following description and the drawings sufficiently illustrate specific embodiments of the present invention to enable those skilled in the art to practice them. The examples represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The scope of the embodiments of the invention includes the entire scope of the claims, and all available equivalents of the claims. Herein, the embodiments may be individually or collectively represented by the term "invention", this is for convenience only, and if more than one invention is actually disclosed, it is not intended to automatically limit the scope of the application to any A single invention or inventive idea. In this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not require or imply any actual relationship between these entities or operations or order. Moreover, the terms "including," "including," or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed Elements. The embodiments in this document are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same and similar parts between the embodiments, refer to each other. As for the structures and products disclosed in the embodiments, since they correspond to the parts disclosed in the embodiments, the description is relatively simple. For the relevant parts, refer to the description of the method.

Fig. 1 is a schematic flowchart of a method for controlling a multi-air conditioner according to an exemplary embodiment.

As shown in FIG. 1, the present invention provides a method for controlling a multi-air conditioner. The method includes:

S101, controlling the air conditioner to operate a single indoor unit;

S102: Obtain the cooling capacity and outdoor ambient temperature of a single indoor unit;

S103. Determine the maximum frequency of the compressor operation according to the cooling capacity and the outdoor ambient temperature;

S104. Control the compressor to operate at a frequency less than or equal to the maximum frequency.

Optionally, when the cooling capacity of a single indoor unit is 2500W, in the cooling mode:

When the outdoor ambient temperature is less than or equal to 15 ° C, the maximum frequency of the compressor operation is 50 ~ 54Hz. Specifically, the maximum frequency of the compressor operation is 50Hz, 51Hz, 52Hz, 53Hz or 54Hz, which can effectively avoid the compressor The operating frequency is too high.

When the outdoor ambient temperature is greater than 15 ° C and less than or equal to 45 ° C, the maximum frequency of the compressor operation is 55 to 59Hz. Specifically, the maximum frequency of the compressor operation is 55Hz, 56Hz, 57Hz, 58Hz, or 59Hz. Effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 45 ° C, the maximum frequency of the compressor operation is 60-64Hz. Specifically, the maximum frequency of the compressor operation is 60Hz, 61Hz, 62Hz, 63Hz, or 64Hz, which can effectively avoid the compressor operation frequency. Too high.

Optionally, when the cooling capacity of a single indoor unit is 2500W, in the heating mode:

When the outdoor ambient temperature is less than or equal to 5 ° C, the maximum frequency of the compressor is 61 to 65 Hz. Specifically, the maximum frequency of the compressor is 61 Hz, 62 Hz, 63 Hz, 64 Hz, or 65 Hz, which can effectively avoid the compressor. The operating frequency is too high.

When the outdoor ambient temperature is greater than 5 ° C and less than or equal to 18 ° C, the maximum frequency of the compressor operation is 56 to 60Hz. Specifically, the maximum frequency of the compressor operation is 56Hz, 57Hz, 58Hz, 59Hz or 60Hz. Effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 18 ° C, the maximum frequency of the compressor operation is 52 to 55Hz. Specifically, the maximum frequency of the compressor operation is 52Hz, 53Hz, 54Hz, or 55Hz, which can effectively avoid the compressor operating frequency being too high. .

Optionally, when the cooling capacity of a single indoor unit is 5000 W, in the cooling mode:

When the outdoor ambient temperature is less than or equal to 15 ° C, the maximum frequency of the compressor is 60-64Hz. Specifically, the maximum frequency of the compressor is 60Hz, 61Hz, 62Hz, 63Hz, or 64Hz, which can effectively avoid the compressor The operating frequency is too high.

When the outdoor ambient temperature is greater than 15 ° C and less than or equal to 45 ° C, the maximum frequency of the compressor operation is 65-69Hz. Specifically, the maximum frequency of the compressor operation is 65Hz, 66Hz, 67Hz, 68Hz, or 69Hz. Effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 45 ° C, the maximum frequency of the compressor operation is 70-74Hz. Specifically, the maximum frequency of the compressor operation is 70Hz, 71Hz, 72Hz, 73Hz, or 74Hz, which can effectively avoid the compressor operation frequency. Too high.

Optionally, when the cooling capacity of a single indoor unit is 5000 W, in the heating mode:

When the outdoor ambient temperature is less than or equal to 5 ° C, the maximum frequency of the compressor is 62 to 69Hz. Specifically, the maximum frequency of the compressor is 62Hz, 65Hz, 67Hz, or 69Hz, which can effectively avoid the compressor operating frequency. Too high.

When the outdoor ambient temperature is greater than 5 ° C and less than or equal to 18 ° C, the maximum frequency of the compressor operation is 57 to 61Hz. Specifically, the maximum frequency of the compressor operation is 57Hz, 58Hz, 59Hz, 60Hz, or 61Hz. Effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 18 ° C, the maximum frequency of the compressor operation is 52-56Hz. Specifically, the maximum frequency of the compressor operation is 52Hz, 54Hz, or 56Hz, which can effectively prevent the compressor operation frequency from being too high.

Optionally, when the cooling capacity of a single indoor unit is 7000W, in the cooling mode:

When the outdoor ambient temperature is less than or equal to 15 ° C, the maximum frequency of the compressor operation is 75-79Hz. Specifically, the maximum frequency of the compressor operation is 75Hz, 76Hz, 77Hz, 78Hz, or 79Hz, which can effectively avoid the compressor The operating frequency is too high.

When the outdoor ambient temperature is greater than 15 ° C and less than or equal to 45 ° C, the maximum frequency of the compressor operation is 80-84Hz. Specifically, the maximum frequency of the compressor operation is 80Hz, 81Hz, 82Hz, 83Hz, or 84Hz. Effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 45 ° C, the maximum frequency of the compressor operation is 85-89Hz. Specifically, the maximum frequency of the compressor operation is 85Hz, 86Hz, 87Hz, 88Hz, or 89Hz, which can effectively avoid the compressor operation frequency. Too high.

Optionally, when the cooling capacity of a single indoor unit is 7000W, in the heating mode:

When the outdoor ambient temperature is less than or equal to 5 ° C, the maximum frequency of the compressor is 74 ~ 80Hz. Specifically, the maximum frequency of the compressor is 74Hz, 76Hz, 78Hz, or 80Hz, which can effectively avoid the compressor operating frequency. Too high.

When the outdoor ambient temperature is greater than 5 ° C and less than or equal to 18 ° C, the maximum frequency of the compressor operation is 70 to 75Hz. Specifically, the maximum frequency of the compressor operation is 70Hz, 73Hz, or 75Hz, which can effectively avoid the compressor The operating frequency is too high.

When the outdoor ambient temperature is greater than 18 ° C, the maximum frequency of the compressor operation is 65-69Hz. Specifically, the maximum frequency of the compressor operation is 65Hz, 67Hz, or 69Hz, which can effectively prevent the compressor operation frequency from being too high.

As shown in FIG. 2, the present invention provides a control device 200 for a multi-air conditioner, including:

A first control module 210, configured to control the air conditioner to operate a single indoor unit;

A first obtaining module 220, configured to obtain a cooling capacity and an outdoor ambient temperature of a single indoor unit;

A first determining module 230, configured to determine a maximum frequency of compressor operation according to a cooling capacity and an outdoor ambient temperature;

The second control module 240 is configured to control the compressor to operate at a frequency less than or equal to a maximum frequency.

When the first control module 210 controls the air conditioner to run only a single indoor unit, the first determining module 230 determines the maximum frequency of the compressor operation according to the cooling capacity of the single indoor unit and the outdoor ambient temperature obtained by the first obtaining module 220. The second control module 240 controls the compressor to run at a frequency less than or equal to the maximum frequency, which can effectively prevent the compressor from operating at an excessively high frequency, thereby maintaining a stable system pressure.

Optionally, the first determining module 230 is specifically configured to determine the maximum frequency of the compressor operation according to the cooling capacity and the outdoor environment temperature; wherein, when the outdoor environment temperature is the same, the maximum frequency of the compressor operation is positively related to the cooling capacity.

When the outdoor ambient temperature is the same, the larger the cooling capacity of a single indoor unit is, the larger the maximum frequency of the compressor operation determined by the first determination module 230 is, while satisfying the user's comfort, effectively avoiding the compressor operating frequency being too high, thereby Keep the system pressure stable.

Optionally, the first determining module 230 is specifically configured to determine the maximum frequency of the compressor operation according to the cooling capacity and the outdoor environment temperature; wherein when the cooling capacity is the same, the maximum frequency of the compressor operation and the outdoor environment temperature in the cooling mode Positive correlation.

When the cooling capacity of a single indoor unit is the same, the higher the outdoor ambient temperature in the cooling mode, the larger the maximum frequency of the compressor determined by the first determination module 230, which can effectively avoid the compressor while meeting the normal cooling needs of the user. The operating frequency is too high, thus maintaining a stable system pressure.

Optionally, the first determining module 230 is specifically configured to determine the maximum frequency of the compressor operation according to the cooling capacity and the outdoor environment temperature; wherein when the cooling capacity is the same, in the heating mode, the maximum frequency of the compressor operation and the outdoor environment Temperature is inversely related.

When the cooling capacity of a single indoor unit is the same, in heating mode, the lower the outdoor ambient temperature is, the larger the maximum frequency of the compressor determined by the first determination module 230 is, which can effectively avoid users' normal heating needs while effectively avoiding The compressor runs too frequently to maintain a stable system pressure.

When the outdoor ambient temperature is less than or equal to 15 ° C, the maximum frequency of the compressor running determined by the first determining module 230 ranges from 50 to 54 Hz. Specifically, the maximum frequency of the compressor running is 50 Hz, 51 Hz, 52 Hz, 53 Hz or 54Hz, can effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 15 ° C and less than or equal to 45 ° C, the maximum frequency of the compressor operation determined by the first determination module 230 ranges from 55 to 59 Hz. Specifically, the maximum frequency of the compressor operation is 55 Hz, 56 Hz, 57Hz, 58Hz or 59Hz can effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 45 ° C., the maximum frequency of the compressor running determined by the first determining module 230 ranges from 60 to 64 Hz. Specifically, the maximum frequency of the compressor running is 60 Hz, 61 Hz, 62 Hz, 63 Hz, or 64 Hz. Can effectively avoid the compressor running too high.

When the outdoor ambient temperature is less than or equal to 5 ° C, the maximum frequency of the compressor running determined by the first determining module 230 ranges from 61 to 65 Hz. Specifically, the maximum frequency of the compressor running is 61 Hz, 62 Hz, 63 Hz, 64 Hz or 65Hz can effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 5 ° C and less than or equal to 18 ° C, the maximum frequency of the compressor operation determined by the first determination module 230 ranges from 56 to 60 Hz. Specifically, the maximum frequency of the compressor operation is 56 Hz, 57 Hz, 58Hz, 59Hz or 60Hz can effectively prevent the compressor from running too high.

When the outdoor ambient temperature is greater than 18 ° C, the maximum frequency of the compressor operation determined by the first determination module 230 ranges from 52 to 55 Hz. Specifically, the maximum frequency of the compressor operation is 52 Hz, 53 Hz, 54 Hz, or 55 Hz, which can be effective. Avoid running the compressor too frequently.

When the outdoor ambient temperature is less than or equal to 15 ° C, the maximum frequency of the compressor operation determined by the first determination module 230 ranges from 60 to 64 Hz. Specifically, the maximum frequency of the compressor operation is 60 Hz, 61 Hz, 62 Hz, 63 Hz or 64Hz can effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 15 ° C and less than or equal to 45 ° C, the maximum frequency of the compressor operation determined by the first determination module 230 ranges from 65 to 69 Hz. Specifically, the maximum frequency of the compressor operation is 65 Hz, 66 Hz, 67Hz, 68Hz or 69Hz can effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 45 ° C., the maximum frequency of the compressor running determined by the first determining module 230 ranges from 70 to 74 Hz. Specifically, the maximum frequency of the compressor running is 70 Hz, 71 Hz, 72 Hz, 73 Hz, or 74 Hz. Can effectively avoid the compressor running too high.

When the outdoor ambient temperature is less than or equal to 5 ° C., the maximum frequency of the compressor running determined by the first determining module 230 ranges from 62 to 69 Hz. Specifically, the maximum frequency of the compressor running is 62 Hz, 65 Hz, 67 Hz, or 69 Hz. Can effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 5 ° C and less than or equal to 18 ° C, the maximum frequency of the compressor operation determined by the first determination module 230 ranges from 57 to 61 Hz. Specifically, the maximum frequency of the compressor operation is 57 Hz, 58 Hz, 59Hz, 60Hz or 61Hz can effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 18 ° C, the maximum frequency of the compressor operation determined by the first determination module 230 ranges from 52 to 56 Hz. Specifically, the maximum frequency of the compressor operation is 52 Hz, 54 Hz, or 56 Hz, which can effectively avoid compression. Machine running frequency is too high.

When the outdoor ambient temperature is less than or equal to 15 ° C, the maximum frequency of the compressor running determined by the first determining module 230 ranges from 75 to 79 Hz. Specifically, the maximum frequency of the compressor running is 75 Hz, 76 Hz, 77 Hz, 78 Hz or 79Hz, can effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 15 ° C and less than or equal to 45 ° C, the maximum frequency of the compressor operation determined by the first determination module 230 ranges from 80 to 84 Hz. Specifically, the maximum frequency of the compressor operation is 80 Hz, 81 Hz, 82Hz, 83Hz or 84Hz can effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 45 ° C., the maximum frequency of the compressor running determined by the first determining module 230 ranges from 85 to 89 Hz. Specifically, the maximum frequency of the compressor running is 85 Hz, 86 Hz, 87 Hz, 88 Hz, or 89 Hz. Can effectively avoid the compressor running too high.

When the outdoor ambient temperature is less than or equal to 5 ° C., the maximum frequency of the compressor running determined by the first determining module 230 ranges from 74 to 80 Hz. Specifically, the maximum frequency of the compressor running is 74 Hz, 76 Hz, 78 Hz, or 80 Hz. Can effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 5 ° C and less than or equal to 18 ° C, the maximum frequency of the compressor operation determined by the first determination module 230 ranges from 70 to 75 Hz. Specifically, the maximum frequency of the compressor operation is 70 Hz, 73 Hz, or 75Hz can effectively avoid the compressor running too high.

When the outdoor ambient temperature is greater than 18 ° C, the maximum frequency of the compressor operation determined by the first determination module 230 ranges from 65 to 69 Hz. Specifically, the maximum frequency of the compressor operation is 65 Hz, 67 Hz, or 69 Hz, which can effectively avoid compression. Machine running frequency is too high.

It should be understood that the present invention is not limited to the processes and structures that have been described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the invention is only limited by the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when used in the specification, the terms "including" and / or "comprising" indicate 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 and / or components.

The corresponding structures, materials, operations, and equivalents of all devices or steps plus functional elements in the appended claims are intended to include any structure for performing the described function in combination with other claimed elements as specifically claimed, Material or operation. The description of the present invention has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those skilled in the art without departing from the scope of the invention. The embodiments were chosen and described in order to best explain the principles and practical applications of the invention and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

The control method of one-to-multiple air conditioners is characterized in that it includes:

Control the air conditioner to run a single indoor unit;

Obtain the cooling capacity and outdoor ambient temperature of a single indoor unit;

Determine the maximum frequency of compressor operation based on the cooling capacity and outdoor ambient temperature;

Controls the compressor to run at a frequency less than or equal to the maximum frequency.
The control method according to claim 1, wherein determining the maximum frequency of the compressor operation according to the cooling capacity and the outdoor ambient temperature comprises:

When the outdoor ambient temperature is the same, the maximum frequency at which the compressor operates is positively related to the cooling capacity.
The control method according to claim 1 or 2, wherein determining the maximum frequency of the compressor operation according to the cooling capacity and the outdoor ambient temperature includes:

When the cooling capacity is the same, in cooling mode, the maximum frequency of compressor operation is positively related to the outdoor ambient temperature.
The control method according to claim 3, wherein determining the maximum frequency of the compressor operation according to the cooling capacity and the outdoor ambient temperature further comprises:

When the cooling capacity is the same, in heating mode, the maximum frequency of compressor operation is negatively related to the outdoor ambient temperature.
The control device for a multi-air conditioner includes:

A first control module for controlling a single indoor unit of the air conditioner to run;

A first acquisition module, configured to acquire the cooling capacity and outdoor ambient temperature of a single indoor unit;

A first determining module, configured to determine a maximum frequency of compressor operation according to a cooling capacity and an outdoor ambient temperature;

The second control module is used to control the compressor to run at a frequency less than or equal to the maximum frequency.
The control device according to claim 5, wherein the first determining module is specifically configured to determine a maximum frequency of the compressor operation according to a cooling capacity and an outdoor environment temperature; wherein, when the outdoor environment temperature is the same, the compressor The maximum frequency of operation is positively related to the cooling capacity.
The control device according to claim 5 or 6, wherein the first determining module is specifically configured to determine a maximum frequency of the compressor operation according to a cooling capacity and an outdoor ambient temperature; and when the cooling capacity is the same, the cooling In this mode, the maximum frequency at which the compressor operates is positively related to the outdoor ambient temperature.
The control device according to claim 7, wherein the first determining module is specifically configured to: determine a maximum frequency of the compressor operation according to a cooling capacity and an outdoor ambient temperature; and when the cooling capacity is the same, the heating mode In this case, the maximum frequency at which the compressor operates is inversely related to the outdoor ambient temperature.