Air conditioning equipment and control method of air conditioning equipment

Abstract

A fresh air device is arranged on an outdoor unit and comprises an outdoor air inlet, a fresh air fan and an indoor air supply outlet which are sequentially arranged to form a closed airflow channel, and the indoor air supply outlet communicates with an indoor unit through a fresh air pipe and conveys outdoor air to the indoor unit. After the air conditioning equipment operates in the corresponding operation mode to reach the target state, the indoor air velocity is obtained, the first comfort degree is calculated based on the indoor air velocity and the indoor environment data, the second comfort degree is calculated based on the indoor air velocity and the outdoor environment data, and then the current operation mode of the air conditioning equipment is combined. When it is judged that outdoor air can meet the requirement for the indoor environment comfort according to the first comfort and the second comfort and the size relation between the first comfort and the second comfort, a fresh air fan is controlled to start and operate, meanwhile, all devices in an outdoor unit are controlled to stop operating, fresh air is used for replacing refrigeration and heating operation of an air conditioner, and it is guaranteed that the indoor environment temperature and humidity change is not large; and the purpose of saving energy consumption is achieved.

Description

Technical Field

[0001] This application relates to the technical field of air conditioners, and particularly to an air conditioning device and a control method thereof. Background Art

[0002] With the improvement of living standards, air conditioning devices have become indispensable electrical appliances in the indoor environment. They can adjust the indoor environmental temperature by controlling the refrigerant cycle and provide a comfortable living environment for users.

[0003] In recent years, due to the pursuit of health, fresh air air conditioning devices formed by adding fresh air devices to traditional air conditioning devices have been widely welcomed in the market. Fresh air air conditioning devices can achieve the circulation and ventilation of indoor air and outdoor air. However, currently, there is a problem of high energy consumption when the fresh air function of fresh air air conditioning devices is running. Summary of the Invention

[0004] This application provides an air conditioning device and a control method thereof to solve the technical problem of high energy consumption when the fresh air function of the above-mentioned fresh air air conditioning device is running.

[0005] Some embodiments provide an air conditioning device, including:

[0006] An outdoor unit, which is connected to an indoor unit through a refrigerant circulation pipe;

[0007] A fresh air device, which is arranged on the outdoor unit and includes an outdoor air inlet, a fresh air fan, and an indoor air outlet that are arranged in sequence to form a closed air flow channel. The indoor air outlet is also connected to the indoor unit through a fresh air pipe and is used to transport outdoor air to the indoor unit through the fresh air pipe;

[0008] An indoor sensor assembly, which is arranged on the indoor unit and is configured to detect indoor environmental data, and the indoor environmental data includes indoor temperature and indoor humidity;

[0009] An outdoor sensor assembly, which is arranged in the closed air flow channel and is configured to detect outdoor environmental data, and the outdoor environmental data includes outdoor temperature and outdoor humidity;

[0010] A controller, which is communicatively connected to the fresh air fan, the indoor sensor assembly, and the outdoor sensor assembly and is configured to:

[0011] Receive and respond to a start instruction, control the air conditioning device to operate in the operation mode corresponding to the start instruction until a target state is reached. The target state at least includes that the indoor temperature reaches the target temperature corresponding to the start instruction, and the operation mode includes a cooling mode and a heating mode;

[0012] Obtain the indoor air flow rate;

[0013] Calculate the first comfort level based on the indoor air velocity and the indoor environmental data, and calculate the second comfort level based on the indoor air velocity and the outdoor environmental data;

[0014] Based on the current operating mode of the air conditioning device and the magnitude relationship between the first comfort level and the second comfort level, control the operating state of the fresh air device and the operating state of the outdoor unit. The operating state of the fresh air device includes the fresh air fan starting to operate, and the operating state of the outdoor unit includes the outdoor unit stopping to operate.

[0015] The above-mentioned air conditioning device includes an outdoor unit connected to the indoor unit through a refrigerant circulation pipe, and a fresh air device is provided on the outdoor unit at the same time. The fresh air device includes an outdoor air inlet, a fresh air fan, and an indoor air supply outlet that are arranged in sequence to form a closed air flow channel. The indoor air supply outlet is connected to the indoor unit through a fresh air pipe to deliver outdoor air to the indoor unit. It also includes an indoor sensor assembly for detecting indoor environmental data and an outdoor sensor assembly for detecting outdoor environmental data. The controller can receive and respond to a start command, control the air conditioning device to operate in the operating mode corresponding to the start command until the target state is reached. The target state at least includes the indoor temperature reaching the target temperature corresponding to the start command. After reaching the target state, obtain the indoor air velocity, calculate the first comfort level based on the indoor air velocity and the indoor environmental data, calculate the second comfort level based on the indoor air velocity and the outdoor environmental data, and then based on the current operating mode of the air conditioning device and the magnitude relationship between the first comfort level and the second comfort level, control the operating state of the fresh air device and the operating state of the outdoor unit.

[0016] First, after the air conditioning device is powered on, it needs to operate in the operating state corresponding to the start command until the target state is reached. Before judging whether the outdoor air can meet the requirements of indoor environmental comfort, it can ensure that the indoor environmental comfort has reached the requirements. Further, after the indoor environment has reached the target state, for different operating modes of the air conditioning device, different magnitude relationships between the first comfort level and the second comfort level are used to control states such as the fresh air fan starting to operate and the outdoor unit stopping to operate. Since when the indoor environmental comfort has reached the requirements, through the first comfort level indoors and the second comfort level outdoors, it can be determined whether the outdoor air can also meet the requirements of indoor environmental comfort. Thus, control the fresh air fan of the fresh air device to start operating, and at the same time control each component in the outdoor unit to stop operating, replacing the refrigeration and heating operation of the air conditioning device with fresh air, ensuring that the indoor environmental temperature and humidity change little while achieving the purpose of saving energy. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the accompanying drawings required for the description of the embodiments of the present application or related technologies. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other related accompanying drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of an air conditioning device in an embodiment;

[0019] Figure 2 It is a schematic diagram of the internal structure of an air conditioning device in an embodiment;

[0020] Figure 3 It is a schematic diagram of the structure of an outdoor unit in an embodiment;

[0021] Figure 4 It is a schematic diagram of the air flow path of a closed air flow channel formed in a fresh air device in an embodiment;

[0022] Figure 5 It is a schematic diagram of the air flow path of a closed air flow channel formed in a fresh air device in another embodiment;

[0023] Figure 6 It is a schematic diagram of the system block diagram of an air conditioning device in an embodiment;

[0024] Figure 7 It is a schematic diagram of the air flow path of a closed air flow channel formed in a fresh air device in another embodiment;

[0025] Figure 8 It is a schematic diagram of the structure of a fresh air device in an embodiment;

[0026] Figure 9 It is a schematic diagram of the flowchart of the control method of an air conditioning device in an embodiment;

[0027] Figure 10 It is a schematic diagram of the flowchart of the control method of an air conditioning device in another embodiment;

[0028] Figure 11 It is a schematic diagram of the flowchart of the control method of an air conditioning device in another embodiment;

[0029] Figure 12 It is a schematic diagram of the flowchart of the control method of an air conditioning device in another embodiment;

[0030] Figure 13 It is a schematic diagram of the flowchart of the control method of an air conditioning device in another embodiment;

[0031] Figure 14Schematic diagram of the internal structure of an air conditioning device in another embodiment;

[0032] Figure 15 Flow schematic diagram of the control method of an air conditioning device in another embodiment;

[0033] Figure 16 Flow schematic diagram of the control method of an air conditioning device in another embodiment. Detailed implementation manners

[0034] The embodiments will be described in detail below, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following embodiments do not represent all implementation manners consistent with the present application. They are merely examples of systems and methods consistent with some aspects of the present application detailed in the claims.

[0035] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the following described implementation manners, rather than intending to limit the implementation manners of the present application. Unless otherwise specified, these terms should be understood in their ordinary and common meanings.

[0036] The terms "first", "second", "third", etc. in the specification, claims and the above-mentioned drawings of the present application are used to distinguish similar or homogeneous objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that such terms can be interchanged under appropriate circumstances.

[0037] The terms "comprising" and "having" and any variations thereof are intended to cover but not exclude inclusion. For example, a product or device comprising a series of components does not have to be limited to all the components clearly listed, but may include other components not clearly listed or inherent to these products or devices.

[0038] The term "module" refers to any known or later-developed hardware, software, firmware, artificial intelligence, fuzzy logic or a combination of hardware or / and software code that can perform functions related to the element.

[0039] See Figure 1, which is a schematic diagram of the overall structure of an air conditioning device provided in an embodiment of the present application. Specifically, it includes an outdoor unit 1 and an indoor unit 2, which are interconnected through a refrigerant circulation pipe and an electric wire (not shown in the figure), and cooperate with each other to achieve the cooling or heating function of the indoor environment. Among them, the outdoor unit 1 is installed outdoors and is used to exchange heat with the outdoor air to complete the compression and condensation of the refrigerant. The indoor unit 2 is installed in the indoor environment and can be in the form of an indoor wall-mounted unit, an indoor cabinet unit, etc., and is used to complete the cooling or heating of the indoor air, as well as the circulation and filtration of the air. The refrigerant circulates in the refrigerant circulation pipe and can perform a vapor compression refrigeration cycle, and is connected to the outdoor unit 1 and the indoor unit 2 using connecting pipes to form a refrigerant circuit for the refrigerant to circulate.

[0040] See Figure 2 , which is a schematic diagram of the internal structure of an air conditioning device provided in an embodiment of the present application. Its internal components mainly include: a compressor 11, a four-way valve 12, an outdoor heat exchanger 13, a throttling device 14, an evaporator 15, an indoor fan 16, and an outdoor fan 17. Among them, the compressor 11, the four-way valve 12, the outdoor heat exchanger 13, the throttling device 14, and the outdoor fan 17 are arranged in the outdoor unit 1, and the indoor heat exchanger 15 and the indoor fan 16 are arranged in the indoor unit 2. The outdoor heat exchanger 13 and the indoor heat exchanger 15 can each be used as a condenser or an evaporator. When the indoor heat exchanger 15 is used as a condenser, the air conditioning device operates in the heating mode. When the indoor heat exchanger 15 is used as an evaporator, the air conditioning device operates in the cooling mode.

[0041] It can be understood that when the air conditioning device operates in the cooling mode, the refrigerant is compressed in the compressor 11, dissipates heat through the outdoor heat exchanger 13 (which is a condenser at this time) and is cooled into a liquid state. The liquid refrigerant will flow back to the indoor unit 2 through the refrigerant circulation pipe, absorbs heat when evaporating in the indoor heat exchanger 15 (which is an evaporator at this time), thereby reducing the indoor environmental temperature. The indoor fan 16 assists in evenly distributing the cooled air to the indoor environment. The refrigerant that has evaporated again and absorbed heat circulates back to the outdoor unit 1 through the refrigerant circulation pipe and continuously circulates to achieve the cooling effect. The outdoor fan 17 can help the outdoor unit 1 dissipate heat and ensure that the outdoor heat exchanger 13 can work efficiently. When the air conditioning device operates in the heating mode, the refrigerant is compressed in the compressor 11, enters the indoor heat exchanger 15 (which is a condenser at this time) through the four-way valve 12, releases heat through the condensation and liquefaction process, and these heats are transferred to the indoor air and are blown into the indoor environment with the assistance of the indoor fan 16, thereby increasing the temperature of the indoor air. The liquid refrigerant after condensation and liquefaction enters the outdoor heat exchanger 13 (which is an evaporator at this time) through the refrigerant circulation pipe, absorbs the heat of the outdoor air through the evaporation and gasification process and becomes a low-temperature and low-pressure gaseous refrigerant, and is inhaled by the compressor 11 again and continuously circulates to achieve the heating effect.

[0042] In an exemplary embodiment, please refer toFigure 3 , the air conditioning equipment provided by the embodiments of the present application further includes a fresh air device 3, and the fresh air device 3 is arranged on the outdoor unit 1. It can be understood that by arranging the fresh air device 3 on the outdoor unit 1, the size of the indoor unit 2 can be avoided from being affected by arranging it on the indoor unit 2, and at the same time, noise interference to indoor users during fresh air operation can be avoided. In addition, the fresh air device 3 provided in this embodiment is an independent module, which can be, for example, as Figure 1 and Figure 3 shown, directly installed on the top of the outdoor unit 1 without affecting the structure of the outdoor unit 1 itself.

[0043] Exemplarily, as Figure 4 shown, the fresh air device 3 includes an outdoor air inlet 20, a fresh air fan 23, and an indoor air supply outlet 24 that are arranged in sequence to form a closed air flow channel. Please continue to refer to Figure 1 , the indoor air supply outlet 24 is also connected to the indoor unit 2 through a fresh air pipe 25, and is used to transport outdoor air to the indoor unit 2 through the fresh air pipe 25.

[0044] Specifically, under the action of the fresh air fan 23, outdoor fresh air is introduced from the outdoor air inlet 20, transported to the indoor unit 2 through the indoor air supply outlet 24 and the fresh air pipe 25, and sent to the indoor environment through the air outlet of the indoor unit 2 to provide a more comfortable indoor environment. In some embodiments, a purification and filtration module may also be provided in the fresh air device 3 to filter harmful substances such as bacteria, viruses, PM2.5, and formaldehyde in outdoor air and improve indoor air quality.

[0045] In an exemplary embodiment, please continue to refer to Figure 2 , the air conditioning equipment provided by the embodiments of the present application further includes: an indoor sensor assembly 18, which is arranged on the indoor unit 2 and is configured to detect indoor environment data, and the indoor environment data includes indoor temperature and indoor humidity. Specifically, the indoor sensor assembly 18 may include sensor components for obtaining indoor environment data such as indoor temperature and indoor humidity in the indoor environment, such as temperature and humidity sensors. The indoor temperature and indoor humidity can be collected through the temperature and humidity sensors on the indoor unit 2.

[0046] Exemplarily, the indoor sensor assembly 18 may include an indoor temperature sensor and an indoor humidity sensor. The indoor temperature sensor is configured to detect the indoor temperature, and the indoor humidity sensor is configured to detect the indoor humidity.

[0047] In an exemplary embodiment, please refer to Figure 5, the air conditioning equipment provided by the embodiments of the present application further includes: an outdoor sensor assembly 22, which is arranged in the closed air flow channel and is configured to detect outdoor environment data, and the outdoor environment data includes outdoor temperature and outdoor humidity. Specifically, the outdoor sensor assembly 22 may include sensor components for obtaining outdoor environment data such as outdoor temperature and outdoor humidity of the outdoor environment, and may be collected by a temperature and humidity sensor arranged in the closed air flow channel. Among them, the outdoor sensor assembly 22 may be arranged at any position in the closed air flow channel after the outdoor air inlet 20, as long as it can accurately detect the outdoor environment data of the outdoor air introduced from the outdoor air inlet 20. Figure 5 The figure shows that the outdoor sensor assembly 22 is arranged at a position close to the outdoor air inlet 20.

[0048] Exemplarily, the outdoor sensor assembly 22 may include an outdoor temperature sensor and an outdoor humidity sensor. The outdoor temperature sensor is configured to detect the outdoor temperature, and the outdoor humidity sensor is configured to detect the outdoor humidity.

[0049] When the current fresh air air conditioning equipment operates the fresh air function, generally, the power consumption will increase significantly, and the indoor environmental temperature and humidity will change greatly due to the inappropriate fresh air volume introduced. How to better use the fresh air device to achieve a comfortable and energy-saving effect while ensuring the freshness and health of the indoor air is a key technical issue in the industry.

[0050] Based on this, aiming at the technical problem that the traditional air conditioning equipment may cause large changes in indoor environmental temperature and humidity during the operation of the fresh air function, the embodiments of the present application provide a control method for controlling the operation of the air conditioning equipment based on the comfort of the indoor and outdoor environments. Through the environmental data obtained by the above indoor sensor assembly and outdoor sensor assembly, the comfort of the indoor and outdoor environments is further calculated, and then according to the size relationship between the two in different operating modes of the air conditioning equipment, when the outdoor air can also meet the requirements of the indoor environmental comfort, the fresh air fan of the fresh air device of the air conditioning equipment is controlled to start running, ensuring the stability of the indoor environmental temperature and humidity after the fresh air is turned on.

[0051] It can be understood that the air conditioning equipment provided by the embodiments of the present application can be set in different usage scenarios and used by different objects. The above-mentioned comfort for controlling the air conditioning equipment can be the comfort for different usage objects. For example, if the air conditioning equipment is set in a home usage scenario, the comfort can correspond to human comfort. If the air conditioning equipment is set in an animal breeding usage scenario such as a pet store, the comfort can also correspond to animal comfort. In each embodiment of the present application, the comfort is taken as an example of human comfort for explanation.

[0052] Correspondingly, as Figure 6As shown, the air-conditioning equipment further includes a controller 4, which is communicatively connected to the fresh air fan 23, the indoor sensor assembly 18, and the outdoor sensor assembly 22 to obtain the air flow rate and indoor and outdoor environmental data, and then to control the fresh air fan 23 to start running when the outdoor air can also meet the requirements of indoor environmental comfort. In addition, the controller 4 is also the main control center of the air-conditioning equipment and can also be communicatively connected to other controllable components in the outdoor unit 1 and the indoor unit 2, capable of sending / receiving signals to each other, so as to realize operations such as obtaining information of each component of the air-conditioning equipment and issuing control instructions. For example, the controller 4 can be used to connect various sensing elements provided in the air-conditioning equipment, obtain the detected sensing data, and control the operating parameters of core devices such as the compressor 11, the four-way valve 12, the outdoor heat exchanger 13, the throttling device 14, the indoor heat exchanger 15, the indoor fan 16, and the outdoor fan 17. At the same time, the controller can also be used to control the opening and closing states of various pumps and valve elements provided on the refrigerant circulation pipe to ensure more efficient circulation of the refrigerant.

[0053] In an exemplary embodiment, the controller 4 is configured to:

[0054] Receive and respond to a start instruction, and control the air-conditioning equipment to operate in an operation mode corresponding to the start instruction until a target state is reached. The target state at least includes that the indoor temperature reaches the target temperature corresponding to the start instruction, and the operation modes include a cooling mode and a heating mode;

[0055] Obtain the indoor air flow rate;

[0056] Calculate a first comfort level based on the indoor air flow rate and indoor environmental data, and calculate a second comfort level based on the indoor air flow rate and outdoor environmental data;

[0057] Based on the current operation mode of the air-conditioning equipment and the magnitude relationship between the first comfort level and the second comfort level, control the operation state of the fresh air device and the operation state of the outdoor unit. The operation state of the fresh air device includes starting the fresh air fan to run, and the operation state of the outdoor unit includes stopping the outdoor unit from running.

[0058] Specifically, before determining whether outdoor air can meet the requirements of indoor environmental comfort, it is necessary to ensure that the indoor environmental comfort has reached the requirements. For example, it can be determined whether the indoor environmental comfort has reached the requirements by detecting whether the air-conditioning equipment has run to the target state. Among them, the target state may include that the indoor temperature reaches the target temperature corresponding to the start instruction, may also include that the indoor humidity reaches the preset target humidity, and may also include that other indoor environmental data reach the corresponding target values. It can be understood that the start instruction can be sent by the user through a remote control device or a terminal control device, can also be automatically sent after other timing devices reach the timing start time, or can also be output by the controller itself after determining that the air-conditioning equipment start condition is met according to the indoor environmental data. The start instruction may include the corresponding operation mode and target temperature, which are used to indicate how the air-conditioning equipment operates. The operation mode among them may include a heating mode and a cooling mode, and may also include a dehumidification mode and the like in other cases.

[0059] Exemplarily, the determination of whether the target state is reached in the above process includes: when the air-conditioning equipment is operating in the cooling mode, if the indoor temperature reaches the target temperature corresponding to the start instruction and the indoor humidity reaches the preset target humidity, it is determined that the target state is reached; when the air-conditioning equipment is operating in the heating mode, if the indoor temperature reaches the target temperature corresponding to the start instruction, it is determined that the target state is reached. Among them, the indoor temperature reaching the target temperature corresponding to the start instruction can be that the indoor temperature reaches a temperature value within the allowable error range from the target temperature. For example, if the target temperature is set to T0 and the indoor temperature reaches (T0 + 1°C), it can be determined that the indoor temperature reaches the target temperature corresponding to the start instruction. The preset target humidity can be determined according to local climate parameters or can also be preset to a relatively comfortable humidity value, such as 70%RH. In addition, the above determination that the indoor temperature reaches the target temperature corresponding to the start instruction and the indoor humidity reaches the preset target humidity can be that within the preset stable duration, the indoor temperature continuously and stably remains at the target temperature corresponding to the start instruction, and the indoor humidity continuously and stably remains at the preset target humidity. The preset stable duration can be set to a required stable duration according to actual technical requirements. For example, it can be set to 1 minute.

[0060] Furthermore, the comfort level adopted in the embodiments of the present application is index data describing the thermal comfort situation of the environment, and can be comprehensively judged based on various factors such as meteorological factors, human physiological reactions, and specific evaluation indicators. For example, the comfort level can be affected by factors such as air temperature, humidity, wind speed, wind direction, air pressure, and radiant temperature. These factors act on the human body comprehensively to produce different comfort sensations.

[0061] Exemplarily, the predicted mean vote (PMV) can be used as the comfort level in the embodiments of the present application. The calculation method of the predicted mean vote can refer to the standard document "Requirements and Evaluation Methods for Indoor Human Thermal Comfort Environment". The PMV calculation formula recorded therein covers six thermal environment indicators, such as air temperature, relative humidity, ambient mean radiant temperature, air velocity, human metabolic rate, and clothing thermal resistance, based on the heat balance between the human body and the environment. It can be understood that for users with normal activities in the indoor environment, factors such as the human metabolic rate and clothing thermal resistance can be considered to be basically stable and unchanged, and can be preset as constants. The corresponding variable control parameters are air temperature, relative humidity, and air velocity. Furthermore, the calculation method of the comfort level in the embodiments of the present application is represented by the PMV calculation formula, and is further simplified as: PMV = F(T, RH, V), where T is the air temperature, RH is the relative humidity, and V is the air velocity.

[0062] Among them, the indoor temperature and indoor humidity mainly affect the heat metabolism and water-salt metabolism of the human body, and are key parameters for measuring the comfort level of indoor users. The air velocity is the distance that the indoor air moves within a unit time. An appropriate air velocity can take away the heat and moisture generated by the human body and improve the comfort level of the human body, which is an important factor for measuring whether the indoor air is fresh and comfortable. When the air conditioning device is turned on and running, the air velocity in the indoor environment mainly changes under the influence of the indoor fan 16 in the indoor unit 2, and secondly, it may change due to the angle change of the air guiding device on the indoor unit 2. Therefore, the air velocity can be obtained by analyzing the operating parameters of the above-mentioned devices in the air conditioning device. Of course, the air velocity in the indoor environment can also be directly collected through a sensing element such as an anemometer or a wind speed meter provided on the indoor unit 2 or at any position in the indoor environment.

[0063] For the comfort level expressed by the predicted mean vote (PMV), in one example, the value range can be from -3 to 3, and its actual meaning is the change of the thermal comfort level from very cold to very hot. For example, when the comfort level is -3, it indicates that the environment is a very cold environment, and on the contrary, when the comfort level is 3, it indicates that the environment is a very hot environment. In the middle of this range, the comfort level can also include environmental states such as cool (-2), slightly cool (-1), neutral (0), slightly warm (+1), and warm (+2).

[0064] Furthermore, the controller 4 can calculate the first comfort level corresponding to the indoor environment based on the air flow rate and indoor environment data. Specifically, the air flow rate, indoor temperature, and indoor humidity can be substituted into the above PMV calculation formula (PMV = F(T, RH, V)) for calculation to obtain the first comfort level. It can be understood that the first comfort level is the comfort level in the target state reached by the indoor environment after the outdoor unit 1 and the indoor unit 2 cooperate to operate, that is, the comfort level under the action of refrigerant cycle refrigeration or heating.

[0065] At the same time, the controller 4 can calculate the second comfort level corresponding to the outdoor environment based on the air flow rate and outdoor environment data. Specifically, the air flow rate, outdoor temperature, and outdoor humidity can be substituted into the above PMV calculation formula (PMV = F(T, RH, V)) for calculation to obtain the second comfort level. It can be understood that the second comfort level is the comfort level in the state that the indoor environment may change to after the fresh air device 3 is turned on alone, that is, the comfort level after introducing outdoor air into the indoor.

[0066] After obtaining the above two comfort levels, the two can be compared to obtain the magnitude relationship between the first comfort level and the second comfort level, and then combined with the current operating mode of the air-conditioning equipment, it is judged whether the fresh air device 3 can be turned on to replace the refrigeration and heating operations.

[0067] It can be understood that the magnitude relationship between the first comfort level and the second comfort level can be that the two are equal, or the first comfort level is greater than the second comfort level, or the first comfort level is less than the second comfort level.

[0068] Among them, the equality of the two of course indicates that the indoor and outdoor environments are equally comfortable.

[0069] For different operating modes of the air-conditioning equipment, the first comfort level being greater than the second comfort level can indicate that the outdoor environment is more comfortable than the indoor environment, or it can indicate that the indoor environment is more comfortable than the outdoor environment; similarly, the first comfort level being less than the second comfort level can indicate that the outdoor environment is more comfortable than the indoor environment, or it can indicate that the indoor environment is more comfortable than the outdoor environment.

[0070] For example, when the air-conditioning equipment is operating in the cooling mode, based on the smaller comfort level representing a cooler environment, the first comfort level being greater than the second comfort level indicates that the outdoor environment is more comfortable than the indoor environment, and the first comfort level being less than the second comfort level indicates that the indoor environment is more comfortable than the outdoor environment. When the air-conditioning equipment is operating in the heating mode, based on the larger comfort level representing a warmer environment, the first comfort level being greater than the second comfort level indicates that the indoor environment is more comfortable than the outdoor environment, and the first comfort level being less than the second comfort level indicates that the outdoor environment is more comfortable than the indoor environment.

[0071] Based on the above analysis, according to the magnitude relationship between the first comfort level and the second comfort level, and in combination with the current operating mode of the air-conditioning equipment, it can be determined which one of the indoor environment and the outdoor environment is more comfortable. Moreover, when it is determined that the indoor and outdoor environments are equally comfortable, or the outdoor environment is more comfortable than the indoor environment, the fresh air device 3 can be directly controlled to start running, and the outdoor unit 1 can be controlled to stop running, so as to use fresh air instead of refrigeration and heating operation to achieve the purpose of saving energy. When it is determined that the indoor environment is more comfortable than the outdoor environment, the outdoor unit 1 can be kept running normally and the fresh air device 3 can be not started. Of course, in this case, according to the specific situation of the difference between the first comfort level and the second comfort level (for example, the difference is less than a preset difference), the operating parameters of the outdoor unit 1 can be controlled to reduce its energy consumption, and the fresh air device 3 can be started to assist the outdoor unit 1 to run with a small air volume, so as to save some energy as much as possible.

[0072] Exemplarily, controlling the operating state of the fresh air device 3 can be achieved by controlling the operating state of the fresh air fan 23. For example, controlling the fresh air fan 23 to start running and controlling the fresh air fan 23 to stop running. And controlling the operating state of the outdoor unit 1 can be achieved by the operating state of one or more core components in the outdoor unit 1. The core components can be the compressor 11, the outdoor fan 17, the outdoor heat exchanger 13, the throttling device 14, etc. Among them, controlling the outdoor unit 1 to stop running can be to control one or more of the core components to stop running, or to control the entire outdoor unit 1 to enter the shutdown state, as long as the purpose of reducing the energy consumption of the outdoor unit 1 can be achieved.

[0073] The above air-conditioning equipment can receive and respond to a start command, control the air-conditioning equipment to operate in the operating mode corresponding to the start command until a target state is reached. The target state at least includes that the indoor temperature reaches the target temperature corresponding to the start command, and the operating modes include the cooling mode and the heating mode; after reaching the target state, the indoor air flow rate is obtained, the first comfort level is calculated based on the indoor air flow rate and the indoor environment data, and the second comfort level is calculated based on the indoor air flow rate and the outdoor environment data; and then, based on the current operating mode of the air-conditioning equipment and the magnitude relationship between the first comfort level and the second comfort level, the operating state of the fresh air device and the operating state of the outdoor unit are controlled. To achieve that when the outdoor air can also meet the requirements of the indoor environment comfort level, control the fresh air fan of the fresh air device to start running, and at the same time control each component in the outdoor unit to stop running, so as to use fresh air instead of the refrigeration and heating operation of the air conditioner, ensure that the indoor environment temperature and humidity change little, and achieve the purpose of saving energy.

[0074] In an exemplary embodiment, the controller is configured to:

[0075] When the current operating mode of the air conditioning device is the cooling mode and the second comfort level is less than or equal to the first comfort level, control the fresh air fan to start running and the outdoor unit to stop running;

[0076] When the current operating mode of the air conditioning device is the heating mode and the second comfort level is greater than or equal to the first comfort level, control the fresh air fan to start running and the outdoor unit to stop running.

[0077] Specifically, when the air conditioning device operates in the cooling mode, the indoor environment tends to have a relatively low comfort level. Further, when the second comfort level is less than or equal to the first comfort level, it indicates that the outdoor environment has the same or lower comfort level as the indoor environment. Then, the fresh air device can be controlled to start running and the outdoor unit to stop running, replacing the cooling operation with fresh air to achieve the purpose of energy conservation. When the air conditioning device operates in the heating mode, the indoor environment tends to have a relatively high comfort level. Further, when the second comfort level is greater than or equal to the first comfort level, it indicates that the outdoor environment has the same or higher comfort level as the indoor environment. Then, the fresh air device can be controlled to start running and the outdoor unit to stop running, replacing the heating operation with fresh air to achieve the purpose of energy conservation.

[0078] In this embodiment, for the case where the outdoor environment is more comfortable in the cooling mode, such as the outdoor temperature drops at night, the cooling operation can be replaced with fresh air. At the same time, for the case where the outdoor environment is more comfortable in the heating mode, such as the temperature is relatively high and sunny during the day, the heating operation can be replaced with fresh air. While ensuring that the temperature and humidity in the indoor environment do not change significantly, the purpose of energy conservation can be achieved.

[0079] In an exemplary embodiment, the controller is configured to: after the fresh air fan starts running and the outdoor unit stops running, based on the belonging relationship between the first comfort level and the preset target comfort level range, adjust the rotation speed of the fresh air fan and / or control the outdoor unit to restart running.

[0080] Specifically, after the fresh air fan starts running and the outdoor unit stops running, the first comfort level can be continuously calculated based on the air flow velocity and the indoor environment data to determine whether the temperature and humidity in the indoor environment remain stable.

[0081] Among them, it can be determined whether the indoor environmental temperature and humidity are stable based on the belonging relationship between the first comfort level and the preset target comfort range. The preset target comfort range is a target range corresponding to the comfort level preset to meet the comfort requirements of users, and can be set based on the comfort level corresponding to the indoor environment when reaching the target state. It can be understood that the belonging relationship between the first comfort level and the preset target comfort range can be that the first comfort level belongs to the preset target comfort range, or the first comfort level does not belong to the preset target comfort range. Correspondingly, when the first comfort level belongs to the preset target comfort range, it indicates that the change in the indoor environmental temperature and humidity is small and can meet the comfort requirements of users. When the first comfort level does not belong to the preset target comfort range, it indicates that the change in the indoor environmental temperature and humidity is large and cannot meet the comfort requirements of users.

[0082] Furthermore, when the first comfort level belongs to the preset target comfort range, the rotation speed of the fresh air fan can be adjusted to ensure an appropriate amount of outdoor fresh air introduced and maintain the first comfort level within the preset target comfort range. When the first comfort level does not belong to the preset target comfort range, different control methods can be adopted according to whether the first comfort level is higher or lower than the preset target comfort range and the current operating mode of the air conditioning equipment. The control methods can be to adjust the rotation speed of the fresh air fan alone, or to control the outdoor unit to restart and run, or to adjust the rotation speed of the fresh air fan while also controlling the outdoor unit to restart and run to adjust the first comfort level through the cooperation of the two.

[0083] In an exemplary embodiment, the controller is configured to: after the fresh air fan starts running and the outdoor unit stops running, if the first comfort level does not belong to the preset target comfort range, control the outdoor unit to restart and run.

[0084] Correspondingly, when the first comfort level is higher than the preset target comfort range and the current operating mode of the air conditioning equipment is the cooling mode, it can be to control the outdoor unit to restart and run to cool the indoor environment to reduce the first comfort level. When the first comfort level is higher than the preset target comfort range and the current operating mode of the air conditioning equipment is the heating mode, it can be to control the outdoor unit to restart and run to heat the indoor environment to increase the first comfort level.

[0085] In an exemplary embodiment, the controller is configured to: after the fresh air fan starts running and the outdoor unit stops running, if the first comfort level does not belong to the preset target comfort range, adjust the rotation speed of the fresh air fan.

[0086] Among them, the first comfort level does not belong to the preset target comfort range. It can be that the first comfort level is higher than the preset target comfort range, or the first comfort level is lower than the preset target comfort range.

[0087] After controlling the fresh air device to operate instead of the outdoor unit due to the more comfortable outdoor environment, if the first comfort level corresponding to the indoor environment does not belong to the preset target comfort range, since the outdoor environment is still in a more comfortable state, it can be to preferentially adjust the rotation speed of the fresh air fan to control the amount of outdoor fresh air introduced to adjust the value of the first comfort level, and meet the comfort needs of users in a way that saves energy as much as possible.

[0088] Correspondingly, when the first comfort level is higher than the preset target comfort range and the current operating mode of the air conditioning device is the cooling mode, it can be to increase the rotation speed of the fresh air fan to introduce more outdoor fresh air to reduce the first comfort level. When the first comfort level is lower than the preset target comfort range and the current operating mode of the air conditioning device is the cooling mode, it can be to reduce the rotation speed of the fresh air fan to introduce less outdoor fresh air to increase the first comfort level. When the first comfort level is higher than the preset target comfort range and the current operating mode of the air conditioning device is the heating mode, it can be to reduce the rotation speed of the fresh air fan to introduce less outdoor fresh air to increase the first comfort level. When the first comfort level is lower than the preset target comfort range and the current operating mode of the air conditioning device is the heating mode, it can be to increase the rotation speed of the fresh air fan to introduce more outdoor fresh air to increase the first comfort level.

[0089] Further, in an exemplary embodiment, the controller is further configured to:

[0090] After the fresh air fan is adjusted to operate at the maximum rotation speed for the first preset duration, if the first comfort level does not belong to the preset target comfort range, control the outdoor unit to restart and operate;

[0091] After the fresh air fan is adjusted to operate at the minimum rotation speed for the first preset duration, if the first comfort level does not belong to the preset target comfort range, control the fresh air fan to operate intermittently.

[0092] When the first comfort level is higher than the preset target comfort range and the current operating mode of the air conditioning device is the cooling mode, or when the first comfort level is lower than the preset target comfort range and the current operating mode of the air conditioning device is the heating mode, if the rotation speed of the fresh air fan has been increased to the maximum rotation speed and the first comfort level after the first preset duration still does not belong to the preset target comfort range. At this time, it indicates that only adjusting the rotation speed of the fresh air fan cannot meet the comfort needs of users, so the outdoor unit can be further controlled to restart and operate to cool or heat the indoor environment to meet the comfort needs of users.

[0093] When the first comfort level is lower than the preset target comfort range and the current operating mode of the air conditioning device is the cooling mode, or when the first comfort level is higher than the preset target comfort range and the current operating mode of the air conditioning device is the heating mode, if the rotational speed of the fresh air fan has been reduced to the minimum rotational speed and the first comfort level still does not fall within the preset target comfort range after a first preset duration. At this time, it indicates that even only operating the fresh air fan is excessive to meet the user's comfort requirements, that is, the first comfort level is too cold in the cooling environment and too hot in the heating environment. Then, the fresh air fan can be further controlled to operate intermittently to meet the user's comfort requirements.

[0094] Exemplarily, controlling the fresh air fan to operate intermittently can be to control the fresh air fan to circulate in a manner of starting to operate for a first duration and then stopping to operate for a second duration. The first duration and the second duration can be the same duration or different durations. It can be understood that by controlling the fresh air fan to start operating for the first duration and then stop operating for the second duration, no outdoor fresh air volume is introduced to meet the user's comfort requirements.

[0095] In this embodiment, in order to ensure that the indoor environmental temperature and humidity remain stable after the outdoor unit stops operating, the first comfort level can be continuously monitored, and when it does not fall within the preset target comfort range, the rotational speed of the fresh air fan and / or the outdoor unit can be controlled to restart operating to adjust the first comfort level to fall within the preset target comfort range to meet the user's comfort requirements.

[0096] In an exemplary embodiment, the controller is configured to:

[0097] When the air conditioning device is in the dehumidification mode as the current operating mode, calculate a first moisture content based on the indoor environmental data and calculate a second moisture content based on the outdoor environmental data;

[0098] If the second moisture content is greater than the first moisture content, control the fresh air fan to remain stopped.

[0099] Among them, the moisture content is used to describe the water vapor content in the air. The range of air moisture content that makes the human body feel most comfortable is usually between 40% and 60%. When the air is within this humidity range, it is neither too dry nor too wet, which is conducive to the human body maintaining normal heat dissipation and water balance. When the air moisture content exceeds 60%, there is too much moisture in the air, which will inhibit the evaporation of human sweat, thus hindering the effective heat dissipation of the body surface. The dehumidification mode of the air conditioning device can be used to reduce the moisture content in the indoor air and lower the humidity of the indoor environment, which helps to improve the user's comfort.

[0100] Specifically, the moisture content can be obtained based on the analysis of indoor environmental data such as air temperature and relative humidity. Among them, the method of obtaining the moisture content can be calculated based on a preset moisture content formula or obtained by querying a preset moisture content data table. Exemplarily, calculating the moisture content based on air temperature and relative humidity may include: searching for the corresponding target moisture content in the preset moisture content data table according to the air temperature and relative humidity; wherein, the moisture content data table records several groups of moisture contents corresponding to different air temperature values and relative humidity values. Specifically, the appropriate moisture content corresponding to different air temperature values and relative humidity values can be obtained in advance before the air conditioner is shipped. For example, as shown in Table 1, T1 < T2 < T3 < T4, RH1 < RH2 < RH3 < RH4. When the detected air temperature is T2 and the relative humidity is RH3, the corresponding moisture content d can be obtained by looking up the table. 23 .

[0101] Table 1 Moisture Content Data Table Corresponding to Different Air Temperature Values and Relative Humidity Values

[0102]

[0103] Furthermore, the indoor environmental data can be detected based on the indoor sensor assembly, and the moisture content can be queried through Table 1 to obtain the first moisture content. The outdoor environmental data can be detected based on the outdoor sensor assembly, and the moisture content can be queried through Table 1 to obtain the second moisture content. It can be understood that the first moisture content is the moisture content in the real-time state of the indoor environment, while the second moisture content is the moisture content corresponding to the outdoor air.

[0104] Furthermore, when the current operating mode of the air conditioner is the dehumidification mode, it indicates that the moisture content of the air in the indoor environment is relatively high and the air is relatively humid. The dehumidification mode needs to be used to reduce the moisture content of the indoor air. At this time, it can be judged whether introducing outdoor air will further exacerbate the humidity of the indoor environment according to the comparison between the first moisture content corresponding to the indoor environment and the second moisture content corresponding to the outdoor environment. Correspondingly, when the second moisture content is greater than the first moisture content, it can be determined that introducing outdoor air at this time will make the indoor air more humid, and the fresh air fan needs to be controlled to stop running accordingly. If the fresh air fan is in the on state at this time, it is switched to the stop state. If the fresh air fan is in the stop state at this time, it remains in the stop state.

[0105] In an exemplary embodiment, please refer to Figure 1 and Figure 2 , the indoor unit 2 is provided with an indoor fan 16 and a wind deflector 19, and the wind deflector 19 is arranged at the air outlet of the indoor unit 2;

[0106] The controller is configured to: obtain the indoor fan speed of the indoor fan and the air deflector angle of the air deflector, and analyze the indoor air flow rate based on the indoor fan speed and the air deflector angle.

[0107] Specifically, when the air conditioning device starts to operate, since the doors and windows are closed, the indoor air flow rate of the indoor environment is generally affected by both the indoor fan 16 and the air deflector 19. Furthermore, the indoor air flow rate can be obtained by acquiring the indoor fan speed of the indoor fan 16 and the air deflector angle of the air deflector 19, and then comprehensively analyzing based on the indoor fan speed and the air deflector angle.

[0108] The method for obtaining the indoor fan speed of the indoor fan 16 is not unique. It can be by setting a speed sensing element on the indoor fan 16 to detect the indoor fan speed, or it can be directly obtained from within the controller based on the controller's speed control of the indoor fan 16. Similarly, the method for obtaining the air deflector angle of the air deflector 19 is not unique either. It can be by setting an air deflector angle sensing element on the air deflector 19 to detect the air deflector angle, or it can be directly obtained from within the controller based on the controller's angle control of the air deflector 19.

[0109] Among them, the method for obtaining the indoor air flow rate based on the indoor fan speed and the air deflector angle can be calculated based on a preset air flow rate formula, or it can be obtained by querying a preset air flow rate table. Exemplarily, analyzing the indoor air flow rate based on the indoor fan speed and the air deflector angle may include: looking up the corresponding target indoor air flow rate in the preset air flow rate table according to the indoor fan speed and the air deflector angle; wherein, the air flow rate table records several groups of indoor air flow rates corresponding to different indoor fan speeds and air deflector angles. Specifically, it can pre-simulate the operation of the air conditioning device in the indoor environment before the air conditioning device leaves the factory to obtain the appropriate indoor air flow rates corresponding to different indoor fan speeds and air deflector angles. For example, as shown in Table 2, n1 < n2 < n3 < n4, α1 < α2 < α3 < α4. When the detected indoor fan speed is n2 and the air deflector angle is α1, the corresponding indoor air flow rate V can be obtained by looking up the table. 21 。

[0110] Table 2 Air Flow Rate Table Corresponding to Different Indoor Fan Speeds and Air Deflector Angles

[0111]

[0112] In an exemplary embodiment, please refer to Figure 7, the fresh air device 3 further includes a dehumidification module 21. The outdoor air inlet 20, the dehumidification module 21, the fresh air fan 23, and the indoor air supply outlet 24 are arranged in sequence to form a closed air flow channel. The outdoor sensor assembly 22, namely the outdoor temperature sensor and the outdoor humidity sensor, is disposed between the dehumidification module 21 and the fresh air fan 23. Figure 8 It is a schematic structural diagram of the fresh air device 3 including the dehumidification module 21.

[0113] Based on the structure of the above fresh air device, in an exemplary embodiment, the controller is configured to:

[0114] If the current operating mode of the air conditioning device is the cooling mode and the first comfort level is less than the second comfort level, control the dehumidification module to start running;

[0115] After the dehumidification module starts running for a second preset duration, if the first comfort level is greater than or equal to the second comfort level, control the fresh air fan to start running and the outdoor unit to stop running.

[0116] Specifically, when the current operating mode of the air conditioning device is the cooling mode and the first comfort level is less than the second comfort level, it indicates that the indoor environment is more comfortable at this time and it is not suitable to replace the cooling operation with fresh air. However, if at this time, the second comfort level is greater than the first comfort level due to the high indoor humidity, the dehumidification module can be controlled to start running to reduce the outdoor humidity of the outdoor air introduced into the closed air flow channel, thereby affecting the second comfort level. Correspondingly, the outdoor sensor assembly 22 needs to be set behind the dehumidification module 21 in the closed air flow channel, that is, between the dehumidification module 21 and the fresh air fan 23, to detect the outdoor humidity after being dehumidified by the dehumidification module 21 and obtain an accurate second comfort level for controlling the fresh air device.

[0117] It can be understood that under the influence of the dehumidification module 21 starting to run for a second preset duration, if the second comfort level changes to be less than or equal to the first comfort level, that is, changes to a more comfortable outdoor environment, the fresh air fan 23 can be correspondingly controlled to start running and the outdoor unit 1 to stop running, and use fresh air to replace the heating and cooling operation to achieve the purpose of energy conservation.

[0118] Based on the embodiment of the present application, the fresh air device 3 is arranged on the outdoor unit 1. Since the fresh air pipe 25 is outdoors, its length may need to be determined according to the actual position between the outdoor unit 1 and the indoor unit 2. It is easy to generate condensation inside the pipe due to heat transfer in the wall thickness direction of the fresh air pipe 25 and the flow resistance on the inner wall surface of the pipe. Further, since the inside of the fresh air pipe 25 belongs to a closed air flow channel, it is difficult to dry the condensed water after it is generated, and it is easy to cause noise and hygiene problems.

[0119] Correspondingly, in an exemplary embodiment, the controller is configured to:

[0120] After the fresh air fan starts and runs, calculate the outdoor dew point temperature based on the outdoor temperature and outdoor humidity;

[0121] When the outdoor dew point temperature is greater than the indoor temperature, control the dehumidification module to start and run until the outdoor dew point temperature is less than the indoor temperature.

[0122] Among them, the dew point temperature is the temperature limit at which water vapor condenses into liquid water, that is, when the temperature drops below the dew point temperature, the outdoor air flowing through the fresh air pipe 25 may condense and form condensation.

[0123] Specifically, calculating the outdoor dew point temperature based on the outdoor temperature and outdoor humidity includes: calculating the outdoor dew point temperature corresponding to the outdoor temperature and outdoor humidity according to the preset correspondence between temperature, humidity, and dew point temperature. Among them, the preset correspondence between temperature, humidity, and dew point temperature includes a preset formula, a preset curve graph, and a preset data table. Specifically, several groups of data between temperature, humidity, and dew point temperature can be obtained through pre-experiments, and then the correspondence between the three can be analyzed based on several groups of data and pre-stored in the controller.

[0124] Exemplarily, the preset correspondence between the preset temperature data, humidity data, and dew point temperature in this embodiment is expressed by the following formula:

[0125]

[0126] Among them, is the outdoor temperature, is the outdoor humidity, and are constants. For example, for water, can be set to 17.625, can be set to 243.04.

[0127] Furthermore, after the fresh air fan starts and runs, the outdoor dew point temperature can be calculated first based on the outdoor temperature and outdoor humidity. Then, when it is determined that the outdoor dew point temperature is greater than the indoor temperature, the indoor low-temperature air may flow reversely through the indoor air supply port 24 to the fresh air pipe 25, resulting in condensation on the inner wall of the fresh air pipe 25. Therefore, it is necessary to control the dehumidification module 21 to start and run to dehumidify the outdoor air, so as to reduce the outdoor dew point temperature and avoid noise and hygiene problems caused by condensation on the inner wall of the fresh air pipe 25.

[0128] In an exemplary embodiment, the controller is configured to: receive and respond to a shutdown instruction, and when the outdoor dew point temperature is greater than or equal to the indoor temperature, keep the fresh air fan and the dehumidification module running for a third preset duration and then stop running.

[0129] Specifically, after the air conditioner receives a shutdown instruction, the controller still needs to continue calculating the outdoor dew point temperature through the outdoor temperature and outdoor humidity. If the obtained outdoor dew point temperature is lower than the indoor temperature, indicating that there is no risk of condensation in the fresh air duct, the operation of the fresh air fan and the dehumidification module can be turned off. If the obtained outdoor dew point temperature is greater than or equal to the indoor temperature, indicating that there is still a risk of condensation in the fresh air duct, the fresh air fan and the dehumidification module need to be kept running for a third preset duration and then stopped to dry the possible condensed water in the fresh air duct until the outdoor dew point temperature is lower than the indoor temperature, avoiding noise and hygiene problems caused by condensation on the inner wall of the fresh air duct 25.

[0130] It can be understood that if the fresh air fan and the dehumidification module are in a stopped state when the shutdown instruction is received, and it is detected that the outdoor dew point temperature is greater than or equal to the indoor temperature, the fresh air fan and the dehumidification module need to be restarted and run for a third preset duration before stopping, in order to dry the possible condensed water in the fresh air duct.

[0131] Exemplarily, please refer to Figure 8 , the dehumidification module 21 is a semiconductor refrigeration module, or it can also be a refrigerant refrigeration module.

[0132] See Figure 9 , which is a schematic flowchart of a control method for an air conditioner device executed by the controller 4 provided in an embodiment of the present application. Specifically, it includes steps 102 to step 108, where:

[0133] Step 102, receive and respond to a start instruction, and control the air conditioner device to operate in the operation mode corresponding to the start instruction until the target state is reached. The target state at least includes the indoor temperature reaching the target temperature corresponding to the start instruction, and the operation mode includes a refrigeration mode and a heating mode;

[0134] Step 104, obtain the indoor air flow rate;

[0135] Step 106, calculate the first comfort level based on the indoor air flow rate and indoor environmental data, and calculate the second comfort level based on the indoor air flow rate and outdoor environmental data;

[0136] Step 108, based on the current operation mode of the air conditioner device and the magnitude relationship between the first comfort level and the second comfort level, control the operation state of the fresh air device and the operation state of the outdoor unit. The operation state of the fresh air device includes the fresh air fan starting to operate, and the operation state of the outdoor unit includes the outdoor unit stopping to operate.

[0137] In an exemplary embodiment, see Figure 10 , which is a schematic flowchart of another control method for an air conditioner device executed by the controller provided in an embodiment of the present application. Specifically, it includes steps 202 to step 204, where:

[0138] Step 202: When the current operating mode of the air conditioning device is the cooling mode and the second comfort level is less than or equal to the first comfort level, control the fresh air fan to start running and the outdoor unit to stop running;

[0139] Step 204: When the current operating mode of the air conditioning device is the heating mode and the second comfort level is greater than or equal to the first comfort level, control the fresh air fan to start running and the outdoor unit to stop running.

[0140] In an exemplary embodiment, another control method for an air conditioning device executed by the controller provided in the embodiments of the present application specifically includes: after the fresh air fan starts running and the outdoor unit stops running, based on the belonging relationship between the first comfort level and the preset target comfort level range, adjust the rotation speed of the fresh air fan and / or control the outdoor unit to restart running.

[0141] In an exemplary embodiment, another control method for an air conditioning device executed by the controller provided in the embodiments of the present application specifically includes: after the fresh air fan starts running and the outdoor unit stops running, if the first comfort level does not belong to the preset target comfort level range, control the outdoor unit to restart running.

[0142] In an exemplary embodiment, referring to Figure 11 , another control method for an air conditioning device executed by the controller provided in the embodiments of the present application specifically includes Step 302: after the fresh air fan starts running and the outdoor unit stops running, if the first comfort level does not belong to the preset target comfort level range, adjust the rotation speed of the fresh air fan.

[0143] Further, please continue to refer to Figure 11 , the above control method for the air conditioning device executed by the controller provided in the embodiments of the present application further includes the following Steps 304 to 306, where:

[0144] Step 304: After the fresh air fan is adjusted to run at the maximum rotation speed for the first preset duration, if the first comfort level does not belong to the preset target comfort level range, control the outdoor unit to restart running;

[0145] Step 306: After the fresh air fan is adjusted to run at the minimum rotation speed for the first preset duration, if the first comfort level does not belong to the preset target comfort level range, control the fresh air fan to run intermittently.

[0146] In an exemplary embodiment, referring to Figure 12 , a flowchart of another control method for an air conditioning device executed by the controller provided in the embodiments of the present application specifically includes Steps 402 to 404, where:

[0147] Step 402: When the air conditioning equipment is in the current dehumidification mode, calculate the first moisture content based on the indoor environmental data and calculate the second moisture content based on the outdoor environmental data;

[0148] Step 404: If the second moisture content is greater than the first moisture content, control the fresh air fan to remain stopped.

[0149] Another control method for an air conditioning equipment executed by the controller provided in the embodiment of the present application specifically includes: obtaining the indoor fan speed of the indoor fan and the air deflector angle of the air deflector, and analyzing the indoor air flow velocity based on the indoor fan speed and the air deflector angle.

[0150] In an exemplary embodiment, refer to Figure 13 , which is a schematic flowchart of another control method for an air conditioning equipment executed by the controller provided in the embodiment of the present application, specifically including steps 502 to 504, where:

[0151] Step 502: If the current operating mode of the air conditioning equipment is the cooling mode and the first comfort level is less than the second comfort level, control the dehumidification module to start running;

[0152] Step 504: After the dehumidification module has started running for a second preset duration, if the first comfort level is greater than or equal to the second comfort level, control the fresh air fan to start running and the outdoor unit to stop running.

[0153] In an exemplary embodiment, another control method for an air conditioning equipment executed by the controller provided in the embodiment of the present application specifically includes:

[0154] After the fresh air fan starts running, calculate the outdoor dew point temperature based on the outdoor temperature and the outdoor humidity;

[0155] When the outdoor dew point temperature is greater than the indoor temperature, control the dehumidification module to start running until the outdoor dew point temperature is less than the indoor temperature.

[0156] In an exemplary embodiment, another control method for an air conditioning equipment executed by the controller provided in the embodiment of the present application specifically includes: receiving and responding to a shutdown instruction, and when the outdoor dew point temperature is greater than or equal to the indoor temperature, keep the fresh air fan and the dehumidification module running for a third preset duration and then stop running.

[0157] In a specific embodiment, please refer to Figure 1 and Figure 14, an air conditioning device is provided, specifically including an outdoor unit 1 and an indoor unit 2, which are interconnected through a refrigerant circulation pipe and an electric wire (not shown in the figure). The internal components of the air conditioning device mainly include: a compressor 11, a four-way valve 12, an outdoor heat exchanger 13, a throttling device 14, an indoor heat exchanger 15, an indoor fan 16 and an outdoor fan 17. Among them, the compressor 11, the four-way valve 12, the outdoor heat exchanger 13, the throttling device 14 and the outdoor fan 17 are arranged in the outdoor unit 1, and the indoor heat exchanger 15 and the indoor fan 16 are arranged in the indoor unit 2. The indoor unit 2 is also provided with an air guide plate 19, which is arranged at the air outlet of the indoor unit 2.

[0158] In addition, the air conditioning device of this embodiment further includes a fresh air device 3, which is arranged at the outdoor unit 1. The fresh air device 3 includes an outdoor air inlet 20, a dehumidification module 21, a fresh air fan 23 and an indoor air supply port 24, which are arranged in sequence to form a closed air flow channel, and the indoor air supply port 24 is also connected to the indoor unit 2 through a fresh air duct 25, so as to transport outdoor air to the indoor unit 2 through the fresh air duct 25.

[0159] The air conditioner is also provided with an outdoor sensor assembly 22, including an outdoor temperature sensor and an outdoor humidity sensor, both of which are arranged between the dehumidification module 21 and the fresh air blower 23. The indoor unit 2 of the air conditioner is also provided with an indoor sensor assembly 18, including an indoor temperature sensor and an indoor humidity sensor. The indoor temperature sensor is configured to detect the indoor temperature, and the indoor humidity sensor is configured to detect the indoor humidity; the outdoor temperature sensor is configured to detect the outdoor temperature, and the outdoor humidity sensor is configured to detect the outdoor humidity.

[0160] Reference Figure 15 As shown, another control method of air conditioning equipment performed by the controller provided in the embodiment of the present application specifically includes the following steps:

[0161] S1, the air conditioning device receives and responds to the start-up instruction to start up, and according to the operation mode corresponding to the start-up instruction, enters the corresponding step to start operation;

[0162] S2, starts running in cooling mode;

[0163] S3, judge whether the target state is reached according to the indoor temperature and indoor humidity, that is, the indoor temperature data ≤ T0, the preferred value of T0 is the set temperature plus 1°C; the indoor humidity data ≤ RH0, the preferred value of RH0 is 70%RH. If not, it means that the target state has not been reached, then continue to execute S3, and continue to judge whether the target state is reached according to the real-time indoor temperature and indoor humidity; if yes, it means that the target state is reached, and enter S4;

[0164] S4. Calculate the first comfort level (indoor PMV) based on the air velocity, indoor temperature, and indoor humidity, and calculate the second comfort level (outdoor PMV) based on the air velocity, outdoor temperature, and outdoor humidity. Determine whether the outdoor PMV is less than or equal to the indoor PMV. If not, continue to execute S4 and continuously compare the real-time indoor PMV and outdoor PMV; if so, proceed to S5;

[0165] S5. Control the fresh air fan to start automatically;

[0166] S6. Start operating in the heating mode;

[0167] S7. Determine whether the target state is reached based on the indoor temperature, i.e., indoor temperature ≥ T 01 ,T 01 The preferred value is 1°C lower than the set temperature. If not, it means the target state has not been reached, then continue to execute S7 and continuously determine whether the target state is reached based on the real-time indoor temperature; if so, it means the target state has been reached, and proceed to S8;

[0168] S8. Calculate the first comfort level (indoor PMV) based on the air velocity, indoor temperature, and indoor humidity, and calculate the second comfort level (outdoor PMV) based on the air velocity, outdoor temperature, and outdoor humidity. Determine whether the outdoor PMV is greater than or equal to the indoor PMV. If not, continue to execute S8 and continuously compare the real-time indoor PMV and outdoor PMV; if so, proceed to S9;

[0169] S9. Control the fresh air fan to start automatically;

[0170] S10. Start operating in the dehumidification mode;

[0171] S11. Calculate the first moisture content (indoor moisture content) based on the indoor temperature and indoor humidity, and calculate the second moisture content (outdoor moisture content) based on the outdoor temperature and outdoor humidity. Determine whether the outdoor moisture content is less than or equal to the indoor moisture content. If not, keep the fresh air fan in the stopped state and continue to execute S11, continuously comparing the real-time indoor moisture content and outdoor moisture content; if so, then proceed to S12;

[0172] S12. Control the fresh air fan to start automatically.

[0173] Refer to Figure 16 As shown, another control method for an air-conditioning device executed by the controller provided in the embodiment of the present application specifically includes the following steps:

[0174] S13. The fresh air fan starts and operates according to the demand;

[0175] S14. Calculate the outdoor dew point temperature based on the outdoor temperature and outdoor humidity, and determine whether the indoor temperature is less than or equal to the outdoor dew point temperature. If not, it means that condensation will not occur in the fresh air duct, and S14 is continuously executed until S18 is triggered; if so, proceed to S15;

[0176] S15. Control the dehumidification module to start running;

[0177] S16. Continuously determine whether the indoor temperature is less than or equal to the outdoor dew point temperature. If so, it means that there is still a risk of condensation, and S16 is continued; if not, proceed to S17;

[0178] S17. Gradually reduce the speed of the fresh air fan until it stops running, and the dehumidification module stops running synchronously;

[0179] S18. Receive a shutdown command;

[0180] S19. Determine whether the indoor temperature is less than or equal to the outdoor dew point temperature. If not, proceed to S20; if so, proceed to S21;

[0181] S20. The entire fresh air device stops running;

[0182] S21. Keep the fresh air fan and the dehumidification module running continuously for a period of time and then stop running.

[0183] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope recorded in this application.

[0184] The above-described embodiments merely represent several implementation manners of this application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the patent scope of this application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of this application should be subject to the appended claims.

Claims

1. An air conditioning device, characterized in that, Comprising: An outdoor unit, which is connected to an indoor unit through a refrigerant circulation pipe; A fresh air device, which is arranged on the outdoor unit and includes an outdoor air inlet, a fresh air fan and an indoor air supply outlet that are arranged in sequence to form a closed air flow channel. The indoor air supply outlet is also connected to the indoor unit through a fresh air pipe, and is used to transport outdoor air to the indoor unit through the fresh air pipe; An indoor sensor assembly, which is arranged on the indoor unit and is configured to detect indoor environmental data, and the indoor environmental data includes indoor temperature and indoor humidity; An outdoor sensor assembly, which is arranged in the closed air flow channel and is configured to detect outdoor environmental data, and the outdoor environmental data includes outdoor temperature and outdoor humidity; A controller, which is communicatively connected to the fresh air fan, the indoor sensor assembly and the outdoor sensor assembly, and is configured to: Receive and respond to a start instruction, and control the air conditioning equipment to operate in an operation mode corresponding to the start instruction until a target state is reached. The target state at least includes that the indoor temperature reaches the target temperature corresponding to the start instruction, and the operation mode includes a cooling mode and a heating mode; Obtain the indoor air flow rate; Calculate a first comfort level based on the indoor air flow rate and the indoor environmental data, and calculate a second comfort level based on the indoor air flow rate and the outdoor environmental data; Based on the current operation mode of the air conditioning equipment and the magnitude relationship between the first comfort level and the second comfort level, control the operation state of the fresh air device and the operation state of the outdoor unit. The operation state of the fresh air device includes starting and running the fresh air fan, and the operation state of the outdoor unit includes stopping the outdoor unit from running.

2. The air conditioning equipment according to claim 1, characterized in that, The controller is further configured to: When the current operation mode of the air conditioning equipment is the cooling mode and the second comfort level is less than or equal to the first comfort level, control the fresh air fan to start running and the outdoor unit to stop running; When the current operation mode of the air conditioning equipment is the heating mode and the second comfort level is greater than or equal to the first comfort level, control the fresh air fan to start running and the outdoor unit to stop running.

3. The air-conditioning equipment according to claim 1, characterized in that, The controller is further configured to: After the fresh air fan starts running and the outdoor unit stops running, based on the belonging relationship between the first comfort level and a preset target comfort level range, adjust the rotation speed of the fresh air fan and / or control the outdoor unit to restart running.

4. The air conditioning device according to claim 3, characterized in that, The controller is further configured to: After the fresh air fan starts running and the outdoor unit stops running, if the first comfort level does not belong to the preset target comfort level range, adjust the rotation speed of the fresh air fan.

5. The air-conditioning equipment according to claim 4, wherein, The controller is further configured to: After the fresh air fan is adjusted to run at the maximum rotation speed for a first preset duration, if the first comfort level does not belong to the preset target comfort level range, control the outdoor unit to restart running; After the fresh air fan is adjusted to run at the minimum rotation speed for the first preset duration, if the first comfort level does not belong to the preset target comfort level range, control the fresh air fan to run intermittently.

6. The air-conditioning equipment according to any one of claims 1 to 5, characterized in that The controller is further configured to: When the current operating mode of the air conditioning device is the dehumidification mode, calculate the first moisture content based on the indoor environmental data and calculate the second moisture content based on the outdoor environmental data; If the second moisture content is greater than the first moisture content, control the fresh air fan to remain stopped.

7. The air conditioning equipment according to claim 1, characterized in that The indoor unit is provided with an indoor fan and a wind deflector, and the wind deflector is arranged at the air outlet of the indoor unit; The controller is further configured to: Obtain the indoor fan speed of the indoor fan and the wind deflector angle of the wind deflector, and analyze the indoor air flow velocity based on the indoor fan speed and the wind deflector angle.

8. The air conditioning device according to claim 1, characterized in that, The fresh air device further includes a dehumidification module, and the outdoor air inlet, the dehumidification module, the fresh air fan and the indoor air supply port are arranged in sequence to form a closed air flow channel; The outdoor sensor assembly is arranged between the dehumidification module and the fresh air fan; The controller is further configured to: If the current operating mode of the air conditioning device is the cooling mode and the first comfort level is less than the second comfort level, control the dehumidification module to start running; After the dehumidification module has started running for a second preset duration, if the first comfort level is greater than or equal to the second comfort level, control the fresh air fan to start running and the outdoor unit to stop running.

9. The air-conditioning device according to claim 8, characterized in that, The controller is further configured to: After the fresh air fan starts running, calculate the outdoor dew point temperature based on the outdoor temperature and the outdoor humidity; When the outdoor dew point temperature is greater than the indoor temperature, control the dehumidification module to start running until the outdoor dew point temperature is less than the indoor temperature.

10. The air conditioning device according to claim 9, characterized in that, The controller is further configured to: Receive and respond to a shutdown instruction, and when the outdoor dew point temperature is greater than or equal to the indoor temperature, keep the fresh air fan and the dehumidification module running for a third preset duration and then stop running.

11. A control method for an air conditioning device, implemented based on the air conditioning device according to any one of claims 1 to 10, characterized in that, The method includes: Receive and respond to a start instruction, control the air conditioning device to operate in the operating mode corresponding to the start instruction until a target state is reached, the target state at least includes the indoor temperature reaching the target temperature corresponding to the start instruction, and the operating mode includes a cooling mode and a heating mode; Obtain the indoor air flow velocity, and obtain the indoor environmental data and the outdoor environmental data; Calculate a first comfort level based on the indoor air flow velocity and the indoor environmental data, and calculate a second comfort level based on the indoor air flow velocity and the outdoor environmental data; Based on the current operating mode of the air conditioning device and the magnitude relationship between the first comfort level and the second comfort level, control the operating state of the fresh air device and the operating state of the outdoor unit, the operating state of the fresh air device includes the fresh air fan starting to run, and the operating state of the outdoor unit includes the outdoor unit stopping running.

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