Control method and device of multi-module air conditioning unit and multi-module air conditioning unit

Abstract

The invention provides a control method and device of a multi-module air conditioning unit and the multi-module air conditioning unit, and relates to the field of air conditioners. The multi-module air conditioning unit comprises a plurality of unit modules, each unit module is correspondingly provided with a compressor, and the control method comprises the steps that under the condition that the temperature of a first environment where the multi-module air conditioning unit is located exceeds a working environment temperature range, the on-off state of the multi-module air conditioning unit is obtained; under the condition that the multi-module air conditioning unit is in the starting state, the medium temperature obtained by the unit module corresponding to each compressor in the working state is determined; and according to the medium temperature obtained by the unit module corresponding to each compressor in the working state, the state of each compressor in the working state is controlled.

Description

Technical Field

[0001] The present disclosure relates to the field of air conditioning, and in particular to a control method and device for a multi-module air conditioning unit and a multi-module air conditioning unit. Background Art

[0002] A multi-module air conditioning unit refers to an air conditioning unit that is modularly combined and uniformly scheduled and operated. In the related art, when the ambient temperature of a multi-module air conditioning unit exceeds the working ambient temperature range, multiple compressors of the multi-module air conditioning unit are shut down at the same time, resulting in a sudden change in water temperature. Summary of the invention

[0003] A technical problem to be solved by the present disclosure is to provide a control method and device for a multi-module air-conditioning unit and a multi-module air-conditioning unit, which can reduce medium temperature fluctuations.

[0004] According to one aspect of the present disclosure, a control method for a multi-module air-conditioning unit is proposed, wherein the multi-module air-conditioning unit includes multiple unit modules, and each unit module corresponds to a compressor. The control method includes: when a first ambient temperature of the multi-module air-conditioning unit exceeds a working ambient temperature range, obtaining the on / off state of the multi-module air-conditioning unit; when the multi-module air-conditioning unit is in a powered-on state, determining a medium temperature obtained by a unit module corresponding to each compressor in a working state; and controlling the state of each compressor in a working state according to the medium temperature obtained by the unit module corresponding to each compressor in a working state.

[0005] In some embodiments, a second ambient temperature detected by each unit module in a multi-module air-conditioning unit is obtained; and based on the number of unit modules that detect that the second ambient temperature exceeds a temperature threshold range and lasts longer than a time threshold, it is determined whether the first ambient temperature of the multi-module air-conditioning unit exceeds a working ambient temperature range.

[0006] In some embodiments, determining whether the first ambient temperature of a multi-module air-conditioning unit exceeds the operating ambient temperature range based on the number of unit modules that detect a second ambient temperature that exceeds a temperature threshold range and lasts longer than a time threshold includes: determining that the first ambient temperature of the multi-module air-conditioning unit exceeds the operating ambient temperature range when the second ambient temperature detected by more than a first predetermined number of unit modules exceeds the temperature threshold range and lasts longer than the time threshold.

[0007] In some embodiments, according to the medium temperature obtained by the corresponding unit module of each compressor in working state, the state of each compressor in working state is controlled, including: stopping the compressor whose medium temperature meets the shutdown temperature threshold; and controlling the compressor whose medium temperature does not meet the shutdown temperature threshold to operate normally.

[0008] In some embodiments, the medium temperature obtained by the corresponding unit module of each compressor in the shutdown state is determined; when the medium temperature obtained by the corresponding unit module of the compressor in the shutdown state meets the startup temperature threshold, the shutdown state of the compressor in the shutdown state is maintained.

[0009] In some embodiments, when the multi-module air-conditioning unit is in a shutdown state, the multi-module air-conditioning unit is controlled to start up and all compressors are maintained in a shutdown state.

[0010] In some embodiments, when the first ambient temperature of the multi-module air-conditioning unit does not exceed the operating ambient temperature range, the state of each compressor is controlled according to the medium temperature obtained by the unit module corresponding to each compressor and the priority of the unit module.

[0011] In some embodiments, each unit module detects the ambient temperature through a temperature sensor, and when the number of unit modules whose temperature sensors are in a faulty state is greater than a second predetermined number, the second ambient temperature detected by the unit modules whose temperature sensors are in a faulty state is set to exceed a temperature threshold range; and when the number of unit modules whose temperature sensors are in a faulty state is less than or equal to a second predetermined number, the second ambient temperature detected by the unit modules whose temperature sensors are in a faulty state is set to not exceed a temperature threshold range.

[0012] In some embodiments, the second predetermined number is determined based on reliability requirements of the multi-module air conditioning unit.

[0013] In some embodiments, the first predetermined number is determined based on reliability requirements of the multi-module air conditioning unit.

[0014] In some embodiments, the second ambient temperature detected by each module of the unit is summarized and displayed.

[0015] According to another aspect of the present disclosure, a control device for a multi-module air-conditioning unit is also proposed, wherein the multi-module air-conditioning unit includes multiple unit modules, and each unit module corresponds to a compressor. The control device includes: a state acquisition module, configured to acquire the on / off state of the multi-module air-conditioning unit when a first ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range; a medium temperature determination module, configured to determine the medium temperature acquired by the unit module corresponding to each compressor in a working state when the multi-module air-conditioning unit is in a turned-on state; and a state control module, configured to control the state of each compressor in a working state according to the medium temperature acquired by the unit module corresponding to each compressor in a working state.

[0016] According to another aspect of the present disclosure, a control device for a multi-module air-conditioning unit is also proposed, comprising: a memory; and a processor coupled to the memory, wherein the processor is configured to execute the control method for the multi-module air-conditioning unit as described above based on instructions stored in the memory.

[0017] According to another aspect of the present disclosure, a multi-module air-conditioning unit is also proposed, comprising: the control device of the multi-module air-conditioning unit mentioned above.

[0018] According to another aspect of the present disclosure, a computer-readable storage medium is also provided, on which computer program instructions are stored, and when the instructions are executed by a processor, the control method of the multi-module air-conditioning unit is implemented.

[0019] According to another aspect of the present disclosure, a computer program product is also proposed, including a computer program or instructions, and when the computer program or instructions are executed by a processor, the control method of the multi-module air-conditioning unit is implemented.

[0020] In the disclosed embodiment, when the first ambient temperature of the multi-module air-conditioning unit exceeds the operating ambient temperature range, all compressors are not controlled to shut down. Instead, the status of the compressor is controlled based on the on / off status of the multi-module air-conditioning unit and the medium temperature obtained by the corresponding unit module of each compressor in working state, thereby reducing the occurrence of sudden changes in medium temperature caused by sudden shutdown of all compressors, which affects user experience.

[0021] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0023] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0024] Figure 1 It is a flowchart of some embodiments of the control method of the multi-module air conditioning unit disclosed in the present invention;

[0025] Figure 2 Schematic diagrams of some embodiments of the multi-module air conditioning unit disclosed herein;

[0026] Figure 3 Schematic diagram of the flow chart of other embodiments of the control method of the multi-module air conditioning unit disclosed in the present invention;

[0027] Figure 4 Schematic diagram of the flow chart of other embodiments of the control method of the multi-module air conditioning unit disclosed in the present invention;

[0028] Figure 5 It is a structural schematic diagram of some embodiments of the control device of a multi-module air-conditioning unit;

[0029] Figure 6 are structural schematic diagrams of other embodiments of control devices for multi-module air-conditioning units; and

[0030] Figure 7 Schematic diagram of the structure of other embodiments of the control device of the multi-module air-conditioning unit. DETAILED DESCRIPTION

[0031] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless otherwise specifically stated.

[0032] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0033] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0034] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0035] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0036] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0037] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0038] Figure 1 This is a flow chart of some embodiments of the control method of the multi-module air-conditioning unit disclosed in the present invention. This embodiment is executed by a control device, which can be a controller or a display panel with control functions. This embodiment includes steps S11-S13.

[0039] In step S11, when the first ambient temperature of the multi-module air-conditioning unit exceeds the operating ambient temperature range, the on / off state of the multi-module air-conditioning unit is obtained.

[0040] The multi-module air conditioning unit includes multiple unit modules, each unit module is correspondingly provided with a compressor, and each unit module is used to exchange heat with the medium in the corresponding area. The medium can be liquid such as water or alcohol, or gas. Figure 2 As shown, the multi-module air conditioning unit 20 is composed of two or more unit modules. Figure 2 The figure shows that the multi-module air conditioning unit is composed of 16 unit modules, wherein the number of unit module combinations can be randomly set, and the status of all unit modules is displayed through a display panel. Each unit module has one or more temperature sensors 22, which are, for example, environmental temperature sensing packages. If the unit module has multiple environmental temperature sensing packages, the multiple environmental temperature sensing packages are processed as a whole. The ambient temperature information collected by each unit module is independent of each other.

[0041] In some embodiments, when the first ambient temperature of the multi-module air conditioning unit exceeds the working ambient temperature range, the multi-module air conditioning unit enters an ambient temperature out-of-range protection state. At this time, the on / off state of the multi-module air conditioning unit includes an on state or an off state. The on / off state of the multi-module air conditioning unit can be determined by the state of the on / off button.

[0042] In step S12, when the multi-module air-conditioning unit is in the on state, the medium temperature obtained by each unit module corresponding to the compressor in the working state is determined.

[0043] If the power button of the multi-module air-conditioning unit is on, the working compressor continues to increase or decrease frequency and shut down normally.

[0044] For example, each unit module detects the water temperature of the corresponding area through a water temperature sensor.

[0045] In step S13, the state of each compressor in the working state is controlled according to the medium temperature obtained by the unit module corresponding to each compressor in the working state.

[0046] For example, for each compressor in working state, the frequency of the compressor can be adjusted according to the water temperature detected by its corresponding unit module, and the operation of the compressor can be stopped if a predetermined condition is met.

[0047] In the above embodiment, when the first ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range, all compressors are not controlled to shut down. Instead, the status of the compressor is controlled according to the on / off status of the multi-module air-conditioning unit and the medium temperature obtained by the corresponding unit module of each compressor in working state, thereby reducing the occurrence of sudden changes in medium temperature caused by sudden shutdown of all compressors, which affects the user experience.

[0048] In some embodiments of the present disclosure, the second ambient temperature detected by each unit module in a multi-module air-conditioning unit is obtained; based on the number of unit modules that detect that the second ambient temperature exceeds the temperature threshold range and lasts longer than the time threshold, it is determined whether the first ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range.

[0049] In the related art, multi-module air conditioning units are controlled by each module using the ambient temperature collected by each module to control the operation of the compressor of each module, and no calculation or judgment is performed on the ambient temperature data collected by other modules. For example, if the ambient temperature of a module exceeds the threshold, the compressor of the module will be shut down. At this time, it is easy for the ambient temperature of multiple working compressors to exceed the threshold range at the same time, and then shut down at the same time, causing water temperature fluctuations.

[0050] In this embodiment, for example, the temperature sensor of each unit module can detect the corresponding ambient temperature, and then the ambient temperature of the multi-unit modules is determined according to the number of unit modules whose ambient temperature exceeds the temperature threshold range and lasts longer than the time threshold, so as to identify whether the ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range, that is, the ambient temperature data collected by all unit modules jointly participate in the scheduling control of the subsequent compressor, so that the medium temperature can be kept stable.

[0051] In some embodiments, the second ambient temperature detected by each module of the unit is summarized and displayed.

[0052] For example, the second ambient temperature detected by each unit module is summarized and displayed through the display panel, thereby facilitating the unified processing and scheduling of the ambient temperature.

[0053] In some embodiments, when the second ambient temperature detected by more than a first predetermined number of unit modules exceeds the temperature threshold range and the duration exceeds the time threshold, it is determined that the first ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range.

[0054] If the number of unit modules detected that the second ambient temperature does not exceed the temperature threshold range or the duration does not exceed the time threshold is less than or equal to the first predetermined number, it is considered that the first ambient temperature of the multi-module air-conditioning unit does not exceed the working ambient temperature range.

[0055] For example, if the ambient temperature detected by more than half of the unit modules exceeds the temperature threshold range, and the duration of exceeding the temperature threshold range exceeds 10 seconds, it is considered that the ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range. Since both the ambient temperatures collected by multiple unit modules and the duration of exceeding the temperature threshold range are considered, it is possible to reduce the ambient temperature fluctuations at the range boundary, which causes the ambient temperature of the multi-module air-conditioning unit to fluctuate back and forth whether it exceeds the working ambient temperature range, and further causes the compressor to start and stop frequently.

[0056] In some embodiments, the first predetermined number is determined based on reliability requirements of the multi-module air conditioning unit.

[0057] For example, different application scenarios have different reliability requirements for multi-module air-conditioning units. If the application scenario of the multi-module air-conditioning unit needs to ensure high reliability, that is, it cannot be shut down at will and must ensure normal operation as much as possible, then the first predetermined number should be set closer to the total number of unit modules of the multi-module air-conditioning unit. If the first predetermined number is set to the total number of unit modules, it means that the multi-module air-conditioning unit does not have an ambient temperature operating range protection function. If the application scenario of the multi-module air-conditioning unit needs to ensure the life of the unit and can be properly shut down for protection, then the first predetermined number can be set to a smaller value, for example, set to 1, 2, etc. By setting the first predetermined number, the needs of different application scenarios can be met.

[0058] The following takes a specific embodiment as an example to introduce how to determine whether the ambient temperature of a multi-module air conditioning unit exceeds the operating ambient temperature range. Figure 3 As shown, Figure 3 1 is a flow chart of some other embodiments of the control method of the multi-module air-conditioning unit disclosed in the present invention, and the embodiments include S31-S37.

[0059] In step S31, each unit module detects the ambient temperature in real time.

[0060] The ambient temperature data collected by all unit modules can be summarized on the display board for unified processing.

[0061] In step S32, for any unit module, it is determined whether the ambient temperature detected by the unit module exceeds the temperature threshold range. If so, step S33 is executed; otherwise, step S31 is continued to be executed.

[0062] If the compressors of each unit module are the same, the temperature threshold range can be set to be consistent. The temperature range threshold can also be determined through experiments based on the compressor and the matching unit module, so as to achieve more accurate threshold setting.

[0063] In step S33, it is determined whether the duration exceeds 10 seconds. If so, step S34 is executed; otherwise, step S32 is continued.

[0064] Those skilled in the art should understand that 10 seconds here is only used as an example and can be set according to actual conditions.

[0065] In step S34, the number of modules of the unit operating beyond the temperature threshold range is calculated.

[0066] Only when the detected ambient temperature exceeds the temperature threshold range and lasts for a certain period of time, the ambient temperature of the unit module is considered to be beyond the operating range. The operating range refers to the ambient temperature range of normal operation of the unit.

[0067] In step S35, it is determined whether the number of unit modules operating beyond the temperature threshold range exceeds one half, if so, step S36 is executed, otherwise, step S37 is executed.

[0068] In step S36, it is determined that the ambient temperature of the multi-module air-conditioning unit exceeds the operating ambient temperature range, and the multi-module air-conditioning unit enters an ambient temperature out-of-range protection state.

[0069] In step S37, the status of each compressor is controlled according to the unit logic.

[0070] For example, the state of each compressor is controlled according to the medium temperature obtained by the unit module corresponding to each compressor and the priority of the unit module.

[0071] In the above embodiment, the ambient temperatures detected by multiple unit modules are combined to jointly determine whether the multi-module air-conditioning unit is in a state of operating beyond the working ambient temperature range. Compared with the individual determination of each unit module, this embodiment can reduce the occurrence of simultaneous shutdown of the compressors of all unit modules, thereby improving the stability of the medium temperature. In addition, when determining whether each unit module is operating beyond the temperature threshold range, the ambient temperature that needs to be detected exceeds the range for a certain period of time, thereby reducing the frequent start and stop control of subsequent compressors caused by the ambient temperature fluctuating back and forth at the boundary point of the range.

[0072] In some embodiments of the present disclosure, when a multi-module air-conditioning unit is in the on state, the medium temperature obtained by the corresponding unit module of each compressor in the multi-module air-conditioning unit is determined, and the compressors whose medium temperatures meet the shutdown temperature threshold are controlled to shut down, while the compressors whose medium temperatures do not meet the shutdown temperature threshold are controlled to operate normally.

[0073] For example, the power button of the multi-module air-conditioning unit is turned on, and the working compressor will continue to perform normal frequency increase / decrease and shutdown control. If the water temperature detected by the unit module meets the shutdown temperature threshold, the corresponding compressor is controlled to shut down. If the water temperature does not meet the shutdown temperature threshold, it will not shut down, meeting the user's requirements for water temperature. In the related art, as long as the ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range, all compressors will shut down, without considering that the water temperature of the unit module where each compressor is located may not reach the shutdown water temperature. In this embodiment, the water temperature detected by the unit module where the compressor is located is taken into account. Therefore, the situation of shutting down the compressors at the same time can be reduced, reducing water temperature fluctuations.

[0074] In some embodiments, when a multi-module air-conditioning unit is in the on state, the medium temperature obtained by the corresponding unit module of each compressor in the multi-module air-conditioning unit that is in the shut-down state is determined; when the medium temperature obtained by the corresponding unit module of the compressor in the shut-down state meets the start-up temperature threshold, the shut-down state of the compressor in the shut-down state is maintained.

[0075] For example, if the on / off button of the multi-module air-conditioning unit is turned on, all the compressors that have been shut down will not be scheduled to start up, that is, no compressor that is not working will be started up, and if the working compressor is shut down because the medium temperature meets the shutdown temperature threshold, it will not be scheduled to start up even if the medium temperature meets the startup temperature threshold. This reduces the problem of the shutdown compressor starting up because the medium temperature meets the startup temperature threshold, resulting in large fluctuations in the medium temperature.

[0076] In some embodiments, when the multi-module air-conditioning unit is in a shutdown state, the multi-module air-conditioning unit is controlled to start up and all compressors are maintained in a shutdown state.

[0077] For example, if the power button of the multi-module air conditioner is turned off, the unit can be turned on by pressing a button on the display panel, but all compressors are not turned on. Since the ambient temperature of the multi-module air conditioner exceeds the working ambient temperature range, turning on the compressor will affect the operation of the compressor. Therefore, in this embodiment, even if the power button is turned on, the compressor is not started to protect the compressor.

[0078] In some embodiments, when the first ambient temperature of the multi-module air-conditioning unit does not exceed the operating ambient temperature range, the state of each compressor is controlled according to the medium temperature obtained by the unit module corresponding to each compressor and the priority of the unit module.

[0079] For example, whether to control the compressor to shut down is determined based on whether the medium temperature obtained by the corresponding unit module of each compressor meets the shutdown temperature threshold. If the medium temperatures obtained by the corresponding unit modules of multiple compressors meet the shutdown temperature threshold, the start and stop status of the compressor of each unit module is controlled in turn according to the priority of the unit modules, thereby reducing the problem of excessive medium temperature fluctuations caused by multiple compressors being shut down or started at the same time.

[0080] The following will take a specific embodiment as an example to introduce the multi-module air conditioning unit entering the ambient temperature out-of-range protection state. Figure 4 As shown, Figure 4 1 is a flow chart of other embodiments of the control method of the multi-module air-conditioning unit disclosed in the present invention, including steps S41-S410.

[0081] In step S41, it is determined whether the power button is in the power-on state. If not, step S42 is executed; otherwise, step S43 is executed.

[0082] In step S42, the device is turned on by pressing the power button, and then step S43 is executed.

[0083] When the power button is turned from off to on, all compressors will not start, and the power button will remain on unless someone turns it off. If the power button remains on and the ambient temperature meets the operating range, the compressor can be turned on and operated normally according to logic.

[0084] In step S43, it is determined whether the water temperature corresponding to the operating compressor meets the shutdown temperature threshold. If so, step S44 is executed; otherwise, step S45 is executed.

[0085] In step S44, the compressor is controlled to stop.

[0086] In step S45, the compressor is controlled to operate normally.

[0087] In step S46, it is determined whether the water temperature corresponding to the non-working compressor meets the startup temperature threshold. If so, step S47 is executed; otherwise, step S48 is executed.

[0088] In step S47, the compressor is controlled to remain stopped.

[0089] In step S48, the compressor is controlled to remain stopped.

[0090] In step S49, it is determined whether the first ambient temperature of the multi-unit module exceeds the working ambient temperature range. If so, step S41 is continued to be executed; otherwise, step S410 is executed.

[0091] In step S410, the multi-module air-conditioning unit exits the ambient temperature out-of-range protection state.

[0092] At this time, all compressors of the multi-module air-conditioning unit can be scheduled and turned on normally according to logic. For example, the state of each compressor is controlled according to the medium temperature and unit module priority obtained by the unit module corresponding to each compressor.

[0093] In the above embodiment, after the ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range, control is performed in two situations, namely, the power button is controlled in two states, namely, power off or power on, to achieve precise control of the compressor and ensure reliable operation of the compressor within the working ambient temperature range.

[0094] In the related art, when the temperature sensor of a unit module fails, the compressor of the unit module cannot work, thereby affecting the working efficiency and energy efficiency of the unit module. In other embodiments of the present disclosure, each unit module detects the ambient temperature through a temperature sensor. When the number of unit modules whose temperature sensors are in a faulty state is greater than a second predetermined number, the second ambient temperature detected by the unit modules whose temperature sensors are in a faulty state is set to exceed the temperature threshold range; when the number of unit modules whose temperature sensors are in a faulty state is less than or equal to the second predetermined number, the second ambient temperature detected by the unit modules whose temperature sensors are in a faulty state is set to not exceed the temperature threshold range.

[0095] For example, if there is a faulty ambient temperature sensor in the multi-module air conditioning unit, if the number of unit modules with the faulty ambient temperature sensor exceeds half of the total number of unit modules, the ambient temperature detected by all faulty ambient temperature sensors is considered to exceed the temperature threshold range. If the number of unit modules with the faulty ambient temperature sensor does not exceed half of the total number of unit modules, the ambient temperature detected by all faulty ambient temperature sensors is considered to not exceed the temperature threshold range.

[0096] In this embodiment, the advantages of multiple unit modules are utilized, all temperature sensors are comprehensively judged, and the ambient temperature detected by the faulty temperature sensors is set according to the number of faulty temperature sensors, which can solve the problem of abnormal shutdown of the compressor caused by inaccurate detection data of the temperature sensors of individual unit modules of the multi-module air conditioner.

[0097] In some embodiments, the second predetermined number is determined based on reliability requirements of the multi-module air conditioning unit.

[0098] For example, different application scenarios have different reliability requirements for multi-module air-conditioning units. If the application scenario of the multi-module air-conditioning unit needs to ensure high reliability, that is, it cannot be shut down at will, and normal operation must be guaranteed as much as possible, then the second predetermined number should be set closer to the total number of unit modules of the multi-module air-conditioning unit. If the second predetermined number is set to the total number of unit modules, it means that the multi-module air-conditioning unit does not have an ambient temperature working range protection function. If the application scenario of the multi-module air-conditioning unit needs to ensure the life of the unit, it can be properly shut down for protection, then the second predetermined number can be set to a smaller value, for example, set to 1, 2, etc. By setting the second predetermined number, the needs of different application scenarios can be met.

[0099] Figure 5 This is a structural schematic diagram of some embodiments of a control device for a multi-module air-conditioning unit. The multi-module air-conditioning unit includes multiple unit modules, each unit module is correspondingly provided with a compressor, and the control device is, for example, a controller or a display panel, including a state acquisition module 510, a medium temperature determination module 520 and a state control module 530.

[0100] The state acquisition module 510 is configured to acquire the on / off state of the multi-module air-conditioning unit when the first environment temperature of the multi-module air-conditioning unit exceeds the working environment temperature range, for example, by executing the following steps: Figure 1 Step S11 is shown.

[0101] The on / off state of the multi-module air conditioner unit includes an on state or an off state. The on / off state of the multi-module air conditioner unit can be determined by the state of the on / off button.

[0102] The medium temperature determination module 520 is configured to determine the medium temperature obtained by the corresponding unit module of each compressor in the multi-module air-conditioning unit when the multi-module air-conditioning unit is in the on state, for example, by executing the following steps: Figure 1 Step S12 is shown.

[0103] In some embodiments, the medium temperature determination module 520 is further configured to determine the medium temperature obtained by the unit module corresponding to each compressor in the shutdown state.

[0104] The state control module 530 is configured to control the state of each compressor in the working state according to the medium temperature obtained by the unit module corresponding to each compressor in the working state, for example, executing the following steps: Figure 1 Step S13 is shown.

[0105] In some embodiments, the state control module 530 is configured to control the compressor to shut down when the medium temperature meets the shutdown temperature threshold, and control the compressor to run normally when the medium temperature does not meet the shutdown temperature threshold.

[0106] In the above embodiment, when the first ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range, all compressors are not controlled to shut down. Instead, the status of the compressor is controlled according to the on / off status of the multi-module air-conditioning unit and the medium temperature obtained by the corresponding unit module of each compressor in working state, thereby reducing the occurrence of sudden changes in medium temperature caused by sudden shutdown of all compressors, which affects the user experience.

[0107] In some embodiments, the state control module 530 is further configured to maintain the shutdown state of the compressor in the shutdown state when the medium temperature obtained by the unit module corresponding to the compressor in the shutdown state meets the startup temperature threshold.

[0108] In this embodiment, the on / off button of the multi-module air-conditioning unit is turned on, and all the compressors that have been shut down will not be scheduled to start up, that is, no compressor that is not working will be started up, and the compressor that is working is shut down because the medium temperature meets the shutdown temperature threshold, and even if the medium temperature meets the startup temperature threshold, it will not be scheduled to start up. This reduces the problem of the shutdown compressor being started up because the medium temperature meets the startup temperature threshold, resulting in large fluctuations in the medium temperature.

[0109] In some embodiments, the state control module 530 is further configured to control the multi-module air-conditioning unit to start up and maintain all compressors in a stopped state when the multi-module air-conditioning unit is in a shut-down state.

[0110] In this embodiment, the multi-module air conditioning unit is turned off and then on, but all compressors are not turned on to reduce the impact on the ambient temperature.

[0111] In some embodiments, the state control module 530 is further configured to control the state of each compressor according to the medium temperature and unit module priority obtained by the unit module corresponding to each compressor when the first ambient temperature of the multi-module air-conditioning unit does not exceed the operating ambient temperature range. This embodiment can reduce the problem of excessive fluctuation of the medium temperature caused by simultaneous shutdown or simultaneous startup of multiple compressors.

[0112] In other embodiments of the present disclosure, Figure 6 As shown, Figure 6 Schematic diagram of the structure of some other embodiments of the control device of the multi-module air-conditioning unit, the control device also includes a temperature acquisition module 610 and a temperature judgment module 620.

[0113] The temperature acquisition module 610 is configured to acquire the second ambient temperature detected by each unit module in the multi-module air-conditioning unit; the temperature judgment module 620 is configured to determine whether the first ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range based on the number of unit modules that detect that the second ambient temperature exceeds the temperature threshold range and the duration is greater than the time threshold.

[0114] For example, when the second ambient temperature detected by more than a first predetermined number of unit modules exceeds the temperature threshold range and the duration exceeds the time threshold, it is determined that the first ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range.

[0115] In some embodiments, the first predetermined number is determined based on reliability requirements of the multi-module air conditioning unit.

[0116] In the above embodiment, the corresponding ambient temperature can be detected by the temperature sensor of each unit module, and then the ambient temperature of the multi-unit modules is determined according to the number of unit modules whose ambient temperature exceeds the temperature threshold range and lasts longer than the time threshold, so as to identify whether the ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range, that is, the ambient temperature data collected by all unit modules jointly participate in the scheduling control of the subsequent compressor, so that the medium temperature can be maintained at the temperature.

[0117] In some embodiments, the control device further includes a temperature display module 630 configured to summarize and display the second ambient temperature detected by each unit module.

[0118] For example, the second ambient temperature detected by each unit module is summarized and displayed through the display panel, thereby facilitating the unified processing and scheduling of the ambient temperature.

[0119] Figure 7 Schematic diagram of the structure of some other embodiments of the control device of the multi-module air conditioning unit, the control device 700 includes a memory 710 and a processor 720. The memory 710 can be a disk, a flash memory or any other non-volatile storage medium. The memory 710 is used to store the instructions in the above embodiments. The processor 720 is coupled to the memory 710 and can be implemented as one or more integrated circuits, such as a microprocessor or a microcontroller. The processor 720 is used to execute the instructions stored in the memory.

[0120] In some embodiments, the processor 720 is coupled to the memory 710 via a BUS bus 730. The control device 700 can also be connected to an external storage device 750 via a storage interface 740 to call external data, and can also be connected to a network or another computer system (not shown) via a network interface 760, which will not be described in detail here.

[0121] In this embodiment, the memory stores data instructions, and the processor processes the instructions, so that the medium temperature can be kept stable, so that the multi-module air-conditioning unit can operate normally.

[0122] In some other embodiments of the present disclosure, a multi-module air conditioning unit is provided, which includes the control device in the above embodiment. The multi-module air conditioning unit is composed of a plurality of unit modules and is uniformly scheduled and operated.

[0123] In other embodiments, a computer-readable storage medium stores computer program instructions, which implement the steps of the method in the above-mentioned embodiment when the instructions are executed by the processor. It should be understood by those skilled in the art that the embodiments of the present disclosure can be provided as methods, devices, or computer program products. Therefore, the present disclosure can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure can take the form of a computer program product implemented on one or more computer-usable non-transient storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0124] In some embodiments, a computer program product is protected, including a computer program or an instruction, which implements the above method when the computer program or instruction is executed by a processor. The computer program product includes a computer program carried on a computer-readable medium, and the computer program contains program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device, or installed from a ROM. When the computer program is executed by the CPU, the above functions defined in the method of the embodiment of the present disclosure are executed.

[0125] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present disclosure. It should be understood that each process and / or block in the flowchart and / or block diagram and the combination of processes and / or blocks in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0126] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0127] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0128] So far, the present disclosure has been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0129] The method and apparatus of the present disclosure may be implemented in many ways. For example, the method and apparatus of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above order of steps for the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above, unless otherwise specifically stated. In addition, in some embodiments, the present disclosure may also be implemented as a program recorded in a recording medium, which includes machine-readable instructions for implementing the method according to the present disclosure. Therefore, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.

[0130] Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A control method for a multi-module air conditioning unit, wherein: The multi-module air conditioning unit includes a plurality of unit modules, each unit module is provided with a corresponding compressor, and the control method includes: When the first ambient temperature of the multi-module air-conditioning unit exceeds the operating ambient temperature range, obtaining the on / off state of the multi-module air-conditioning unit; When the multi-module air conditioning unit is in a powered-on state, determining a medium temperature obtained by a unit module corresponding to each compressor in a working state; and The state of each compressor in the working state is controlled according to the medium temperature obtained by the unit module corresponding to each compressor in the working state.

2. The control method according to claim 1, further comprising: Acquire a second ambient temperature detected by each module of the multi-module air conditioning unit; as well as Whether the first ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range is determined according to the number of unit modules that detect that the second ambient temperature exceeds the temperature threshold range and lasts longer than the time threshold.

3. The control method according to claim 2, wherein: The determining whether the first ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range according to the number of unit modules that detect that the second ambient temperature exceeds the temperature threshold range and lasts longer than the time threshold comprises: When the second ambient temperature detected by more than a first predetermined number of unit modules exceeds the temperature threshold range and the duration exceeds the time threshold, it is determined that the first ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range.

4. The control method according to any one of claims 1 to 3, wherein: The controlling of the state of each compressor in the working state according to the medium temperature obtained by the unit module corresponding to each compressor in the working state comprises: Controlling the compressor whose medium temperature meets the shutdown temperature threshold to shut down; and The compressor whose medium temperature does not meet the shutdown temperature threshold is controlled to operate normally.

5. The control method according to claim 4, further comprising: Determine the medium temperature obtained by the unit module corresponding to each compressor in the shutdown state; as well as When the medium temperature obtained by the unit module corresponding to the compressor in the shutdown state meets the startup temperature threshold, the shutdown state of the compressor in the shutdown state is maintained.

6. The control method according to any one of claims 1 to 3, further comprising: When the multi-module air-conditioning unit is in a shutdown state, the multi-module air-conditioning unit is controlled to start up, and all compressors are maintained in a shutdown state.

7. The control method according to any one of claims 1 to 3, further comprising: When the first ambient temperature of the multi-module air-conditioning unit does not exceed the working ambient temperature range, the state of each compressor is controlled according to the medium temperature obtained by the unit module corresponding to each compressor and the priority of the unit module.

8. The control method according to claim 2 or 3, wherein: Each unit module detects the ambient temperature through a temperature sensor. When the number of the unit modules whose temperature sensors are in a faulty state is greater than a second predetermined number, setting the second ambient temperature detected by the unit modules whose temperature sensors are in a faulty state to be beyond the temperature threshold range; as well as When the number of the unit modules whose temperature sensors are in a faulty state is less than or equal to the second predetermined number, the second ambient temperature detected by the unit modules whose temperature sensors are in a faulty state is set to not exceed the temperature threshold range.

9. The control method according to claim 8, wherein: The second predetermined number is determined according to the reliability requirement of the multi-module air-conditioning unit.

10. The control method according to claim 3, wherein: The first predetermined number is determined according to the reliability requirement of the multi-module air-conditioning unit.

11. The control method according to claim 2 or 3, further comprising: The second ambient temperature detected by each unit module is summarized and displayed.

12. A control device for a multi-module air conditioning unit, wherein: The multi-module air conditioning unit includes a plurality of unit modules, each unit module is correspondingly provided with a compressor, and the control device includes: A state acquisition module is configured to acquire the on / off state of the multi-module air-conditioning unit when the first ambient temperature of the multi-module air-conditioning unit exceeds the working ambient temperature range; a medium temperature determination module, configured to determine the medium temperature obtained by the unit module corresponding to each compressor in a working state when the multi-module air-conditioning unit is in a powered-on state; and The state control module is configured to control the state of each compressor in the working state according to the medium temperature obtained by the unit module corresponding to each compressor in the working state.

13. A control device for a multi-module air conditioning unit, comprising: Memory; as well as A processor coupled to the memory, wherein the processor is configured to execute the control method of the multi-module air-conditioning unit according to any one of claims 1 to 11 based on instructions stored in the memory.

14. A multi-module air conditioning unit, comprising: A control device for a multi-module air conditioning unit as claimed in claim 12 or 13.

15. A computer-readable storage medium having computer program instructions stored thereon, wherein when the instructions are executed by a processor, the control method of the multi-module air-conditioning unit according to any one of claims 1 to 11 is implemented.

16. A computer program product, comprising a computer program or instructions, wherein when the computer program or instructions are executed by a processor, the control method of the multi-module air-conditioning unit according to any one of claims 1 to 11 is implemented.

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