Control method of integrated air conditioning device, air conditioning device, and storage medium

Abstract

The embodiment of the application provides a control method of an integrated air conditioner, an air conditioner and a storage medium, which belong to but are not limited to the technical field of air conditioning; the method comprises the following steps: making the folding angle of the starting opening of the cover plate be a mode angle; in response to detecting that a fresh air ventilation starting condition is met, controlling a fresh air fan to rotate in a first direction for a first time length; and after the first time length, an outdoor fan in an outdoor heat exchange assembly rotates for a second time length; after the outdoor fan rotates for the second time length, the fresh air fan is controlled to rotate in a second direction; in the case that the temperature difference between the indoor heat exchange air inlet and the indoor heat exchange air outlet of the indoor cavity is not within the body temperature difference threshold, the fresh air ventilation parameter is adjusted, and the fresh air adjustment process of the above steps is restarted. The embodiment of the application can make the integrated air conditioner with a fresh air function consider both the assembly cost and the use experience.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to a control method for an integrated air conditioning unit, an air conditioning unit, and a storage medium. Background Technology

[0002] Integrated air conditioning units (such as wall-mounted units) are typically divided into an indoor cavity and an outdoor cavity by a partition. The indoor cavity usually contains an evaporator, indoor fan, and other structures. It continuously draws indoor air into the indoor cavity through an internal circulation mode, exchanges heat with the air, and then exhausts it back into the room through the indoor air outlet, thus regulating the indoor temperature. The outdoor cavity typically contains a condenser, outdoor fan, compressor, and piping. It connects to the outdoor air inlet and outlet through two holes in the wall, continuously drawing in outdoor air from the outdoor air inlet to exchange heat with the condenser, and then exhausting it outdoors through the outdoor air outlet. Existing technologies often add a fresh air function to improve the user experience of integrated air conditioning units. However, in environments with significant differences in indoor and outdoor temperature and humidity, existing integrated air conditioning units with fresh air functions struggle to balance installation costs and user experience. Summary of the Invention

[0003] The main objective of this application is to propose a control method, an air conditioning device, and a storage medium for an integrated air conditioning unit, so that the integrated air conditioning unit with fresh air function can balance assembly cost and user experience.

[0004] To achieve the above objectives, a first aspect of this application proposes a control method for an integrated air conditioning unit. The integrated air conditioning unit includes a housing, a partition, an internal circulation heat exchange component, an external circulation heat exchange component, a fresh air duct, a cover plate, a heat recovery core, and a fresh air fan. The partition divides the housing into an indoor cavity and an outdoor cavity. The internal circulation heat exchange component is located in the indoor cavity, and the external circulation heat exchange component is located in the outdoor cavity. A ventilation hole is provided at the first end of the partition. One side of the cover plate is foldable and disposed on the ventilation hole. The two ends of the fresh air duct are respectively connected to the ventilation hole and the indoor heat exchange air inlet of the indoor cavity. The method includes: In response to the activation of the fresh air mode when the heat exchange is not started, the initial folding angle of the cover is controlled to be a mode angle that corresponds one-to-one with the fresh air mode. Fresh air exchange start-up: In response to detecting that the fresh air exchange start-up conditions are met, the fresh air fan is controlled to rotate in the first direction and continue for a first duration; After the fresh air fan rotates in the first direction for a first duration, the outdoor fan in the external circulation heat exchange assembly is controlled to rotate for a second duration. After the outdoor fan has been rotating for a second duration, the fresh air fan is controlled to rotate in a second direction opposite to the first direction. If it is determined that the temperature difference between the indoor air inlet and outlet is not within the preset perceived temperature difference threshold, the fresh air exchange parameters are adjusted and the process jumps to the fresh air exchange start-up step. The fresh air exchange parameters are at least one of the first duration, the second duration, and the folding angle of the cover plate.

[0005] To achieve the above objectives, a second aspect of this application provides an integrated air conditioning device, comprising: case; A partition plate divides the shell into an inner cavity and an outer cavity, and a ventilation hole is provided at the first end of the partition plate; An internal circulation heat exchange assembly is located inside the indoor cavity; An external circulation heat exchange component is located inside the outdoor cavity, and the external circulation heat exchange component is provided with a fan cavity; the external circulation heat exchange component includes an outdoor fan, which is disposed inside the fan cavity; The fresh air assembly includes a fresh air duct, a cover plate, a heat recovery core and a fresh air fan located inside the fresh air duct. One side of the cover plate can be folded over and installed on the ventilation hole. The first end of the fresh air duct is connected to the ventilation hole, and the second end of the fresh air duct is connected to the indoor heat exchange air inlet of the indoor cavity. A control unit that performs a control method for an integrated air conditioning unit as described in any of the first aspects.

[0006] To achieve the above objectives, a third aspect of the present application provides a computer-readable storage medium storing computer-executable instructions, which are used by a processor to execute a control method for an integrated air conditioning device as described in any one of the first aspects.

[0007] The integrated air conditioning unit control method, air conditioning unit, and storage medium proposed in this application utilize a ventilation hole directly set in the partition plate to connect the outdoor and indoor cavities. By dynamically changing the airflow between the ventilation hole and the fresh air duct with a cover plate, the outdoor air inlet and outlet of the outdoor cavity can be reused. This ensures that the installation requirements of the integrated air conditioning unit in this embodiment remain unchanged compared to integrated air conditioning units without a fresh air function. Simultaneously, when the fresh air fan is in fresh air mode only, indoor air is first transported to the outdoor cavity after passing through the heat recovery core. This allows indoor air exhausted to the outdoor cavity to be exhausted by the outdoor fan, and the direction of the fresh air fan is changed, allowing outdoor air to enter the indoor space after passing through the heat recovery core. During this process, the heat recovery core absorbs heat from the outdoor air as it is exhausted and exchanges heat with the outdoor air as it enters, thus minimizing the temperature difference between the incoming indoor air and the indoor temperature. At this point, adjusting the fresh air exchange parameters during the fresh air exchange process based on the temperature difference between the indoor heat exchange inlet and outlet can minimize the impact of each fresh air intake on the indoor temperature, thereby improving the user experience. Therefore, compared with related technologies, the embodiments of this application enable integrated air conditioning units with fresh air functions to balance assembly costs and user experience. Attached Figure Description

[0008] Figure 1a This is a partial structural schematic diagram of one embodiment of an integrated air conditioning unit in the prior art; Figure 1b This is a structural schematic diagram from another perspective of one embodiment of an integrated air conditioning unit in the prior art; Figure 2 This is a schematic flowchart illustrating an embodiment of the control method for the integrated air conditioning unit provided in this application; Figure 3 This is a cross-sectional structural schematic diagram of an embodiment of the integrated air conditioning unit provided in this application; Figure 4 yes Figure 3 An enlarged schematic diagram of part A of the integrated air conditioning unit shown; Figure 5 This is a schematic diagram of the control flow of one embodiment of the integrated air conditioning unit provided in this application; Figure 6 This is a pressure distribution cloud map of a portion of the outdoor cavity structure in one embodiment of the integrated air conditioning unit provided in this application.

[0009] Figure label: Shell 100, partition 110, indoor cavity 120, outdoor cavity 130, outdoor air inlet 131, outdoor air outlet 132, evaporator 140, indoor fan 150, condenser 160, outdoor fan 170, wall 180, indoor heat exchange air inlet 191, indoor heat exchange air outlet 192. Internal circulation heat exchange component 210, external circulation heat exchange component 220, fresh air component 230, cover plate 231, fresh air duct 232, fresh air fan 233, heat recovery core 234, filter screen 235, ventilation hole 240, fan cavity 250. Detailed Implementation

[0010] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0011] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0012] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0013] Integrated air conditioning units (such as wall-mounted units) typically use a partition 110 to divide the entire housing 100 of the air conditioning unit into two parts: an indoor cavity 120 and an outdoor cavity 130. For example, see [reference needed]. Figure 1a As shown, the indoor cavity 120 typically houses an evaporator 140, an indoor fan 150, and other structures. Through an internal circulation mode, indoor air is continuously drawn in from the indoor heat exchange inlet 191 of the indoor cavity 120, undergoes heat exchange, and is then exhausted to the indoor space through the indoor heat exchange outlet 192 of the indoor cavity 120. This circulation process achieves indoor temperature regulation. (Refer to...) Figure 1a and 1b As shown, the outdoor cavity 130 typically houses a condenser 160, an outdoor fan 170, a compressor, and piping, among other structures. Figure 1a and Figure 1bAs shown, two holes are opened in the wall 180 to connect the outdoor air inlet 131 and the outdoor air outlet 132 of the outdoor cavity 130, respectively. Outdoor air is continuously drawn in from the outdoor air inlet 131 to exchange heat with the condenser 160, and then discharged to the outside through the outdoor air outlet 132. In enclosed indoor spaces where integrated air conditioning units are used for a long time, the carbon dioxide (CO2) content in the air will continue to rise with the increase in the usage time of the integrated air conditioning unit, resulting in a reduced user experience. In the prior art, to improve the user experience of integrated air conditioning units, a fresh air function is usually added to introduce outdoor air into the room to reduce the indoor CO2 concentration and ensure a comfortable indoor environment. However, in environments with large differences in indoor and outdoor temperature and humidity, such as in Europe, where the walls are generally thicker and have better insulation, it is easy to have a warm and humid indoor environment and a cold and dry outdoor environment. However, due to the enclosed nature of the house, the indoor environment gradually deteriorates over time. While the fresh air mode of an integrated air conditioning unit can be used to introduce fresh air into the room to improve air quality, existing technologies typically require additional openings in the wall to allow outdoor air to enter. Even though the introduced fresh air undergoes heat exchange through an evaporator before entering the room, the significant temperature difference between indoors and outdoors can still cause fluctuations in indoor temperature. Therefore, existing integrated air conditioning units with fresh air functionality struggle to balance installation costs and user experience. Based on this, this application provides a control method, air conditioning unit, and storage medium for an integrated air conditioning unit, enabling an integrated air conditioning unit with fresh air functionality to balance installation costs and user experience.

[0014] Understandably, referring to Figure 3 As shown, according to the control method of the integrated air conditioning unit provided in the embodiment of this application, the integrated air conditioning unit includes a housing 100, a partition 110, an internal circulation heat exchange component 210, an external circulation heat exchange component 220, and a fresh air component 230. The partition 110 divides the housing 100 into an indoor cavity 120 and an outdoor cavity 130. The internal circulation heat exchange component 210 is located in the indoor cavity 120, and the external circulation heat exchange component 220 is located in the outdoor cavity 130. A ventilation hole 240 is provided at the first end of the partition 110. The fresh air component 230 includes a fresh air duct 232, a cover plate 231, a heat recovery core 234, and a fresh air fan 233. One side of the cover plate 231 can be folded onto the ventilation hole 240. The first end of the fresh air duct 232 is connected to the ventilation hole 240, and the second end of the fresh air duct 232 is connected to the indoor heat exchange air inlet 191 of the indoor cavity 120. (Refer to...) Figure 2 As shown, the method includes: Step S100: In response to the activation of the fresh air mode when the heat exchange is not started, the control cover 231 is initially opened at a folding angle that corresponds to the fresh air mode. Step S200, Fresh air exchange start-up: In response to the detection that the fresh air exchange start-up conditions are met, the fresh air fan 233 is controlled to rotate in the first direction and continue for a first duration, so that the indoor air entering the indoor heat exchange air inlet 191 is delivered to the outdoor cavity 130 after passing through the heat recovery core 234 located in the fresh air duct 232. Step S300: After the fresh air fan 233 rotates in the first direction for a first duration, the outdoor fan 170 in the external circulation heat exchange component 220 is controlled to rotate for a second duration to exhaust the indoor air that has entered the outdoor cavity 130. Step S400: After the outdoor fan 170 has been rotating for a second duration, the fresh air fan 233 is controlled to rotate in a second direction opposite to the first direction, so as to deliver the outdoor air in the outdoor cavity 130 to the indoor space after passing through the heat recovery core 234. Step S500: If it is determined that the temperature difference between the indoor air inlet and outlet is not within the preset perceived temperature difference threshold, adjust the fresh air exchange parameters and jump to the fresh air exchange start-up step. The fresh air exchange parameters are at least one of the first duration, the second duration, and the folding angle of the cover plate 231.

[0015] By directly setting ventilation holes 240 connecting the outdoor cavity 130 and the indoor cavity 120 on the partition plate 110, and dynamically changing the airflow between the ventilation holes 240 and the fresh air duct 232 with the cover plate 231, the outdoor air inlet 131 and outdoor air outlet 132 of the outdoor cavity 130 can be reused, so that the installation requirements of the integrated air conditioning unit of this embodiment are not changed compared with the integrated air conditioning unit without fresh air function. At the same time, when the fresh air fan 233 is only turned on in fresh air mode, the indoor air is first delivered to the outdoor cavity 130 after passing through the heat recovery core 234, so that the air exhausted from the indoor cavity to the outdoor cavity 130 can be exhausted by the outdoor fan 170, and the direction of the fresh air fan 233 is changed so that the outdoor air enters the indoor space after passing through the heat recovery core 234. At this time, when the outdoor air is exhausted first, the heat recovery core 234 will absorb the heat of the air and exchange heat with the outdoor air when the outdoor air enters, thereby reducing the temperature difference between the incoming indoor air and the indoor temperature. At this time, by adjusting the fresh air exchange parameters during the fresh air exchange process according to the temperature difference between the indoor heat exchange air inlet 191 and the indoor heat exchange air outlet 192, the amount of fresh air introduced each time can be minimized in terms of its impact on the indoor temperature, thereby improving the user experience. Therefore, the embodiments of this application enable integrated air conditioning units with fresh air function to balance assembly costs and user experience.

[0016] The absence of heat exchange indicates that the refrigerant in the integrated air conditioning unit is not participating in heat exchange circulation. The integrated air conditioning unit in this application embodiment supports at least a cooling mode; however, this application embodiment does not limit whether the integrated air conditioning unit supports heating.

[0017] In some embodiments, the fresh air mode of this application embodiment can operate in cooling mode, while in other embodiments, the fresh air mode of this application embodiment can also operate in heating mode.

[0018] In this embodiment of the application, there is no restriction on whether the triggering method of step S100 is to stop the heat exchange of the integrated air conditioning unit after the fresh air mode is turned on, or to turn on the fresh air mode after the heat exchange of the integrated air conditioning unit is stopped. Those skilled in the art can selectively set it according to actual needs.

[0019] This application does not limit the number of types of fresh air modes, and different fresh air modes correspond to different mode angles.

[0020] The mode angle is pre-configured and can be obtained by dynamically loading the configuration file through software programs.

[0021] This application does not limit how the mode angle is set. In some embodiments, it can be determined through simulation under standard operating conditions. In some embodiments, simulations can also be performed for standard operating conditions in different environmental regions to determine the angle that meets the standard operating conditions as the mode angle. This application will not elaborate on these details further.

[0022] The fresh air exchange activation condition indicates that the fresh air mode has been detected and the fresh air adjustment has not been activated, or that the fresh air exchange parameters have been adjusted. When the fresh air exchange parameters include the folding angle, the fresh air exchange parameter adjustment completion means that the cover 231 will be adjusted to the updated folding angle so that the fresh air exchange operation will be performed at the updated folding angle in the subsequent time.

[0023] The first duration indicates the maximum duration that can be set without affecting the indoor user experience and meeting system operating performance requirements (such as energy consumption or noise).

[0024] The second duration represents the maximum duration for indoor air to be discharged from the outdoor cavity 130 while meeting system operating performance requirements (such as energy consumption).

[0025] The embodiments of this application do not impose restrictions on how the first duration and the second duration are determined. Those skilled in the art can obtain them based on actual testing or simulation. Therefore, the embodiments of this application will not elaborate on these points.

[0026] This application embodiment does not limit the type of fresh air fan 233, as long as it supports both forward and reverse rotation. Those skilled in the art can selectively configure it according to actual conditions.

[0027] In some embodiments, the angle of the cover plate 231 can be adjusted before the outdoor fan 170 rotates continuously for a second duration, or the angle of the cover plate 231 can be kept consistent with the angle when the fresh air exchange is started. For example, before the outdoor fan 170 starts rotating continuously for a second duration, the angle at which the cover plate 231 is opened is the folding angle corresponding to the first duration. In other embodiments, before the outdoor fan 170 rotates continuously for a second duration, the angle at which the cover plate 231 is opened can be greater than the folding angle corresponding to the first duration.

[0028] Steps S200 to S400 are steps in a single fresh air adjustment process. Step S500 can be executed periodically or triggered after the outdoor fan has been rotating for a second duration. Taking periodic execution as an example, where the period duration is longer than the sum of the first and second durations, assuming that at time t, heat exchange is not started and fresh air mode is activated, the control cover 231 is opened to the angle corresponding to the activated fresh air mode, and then a fresh air adjustment process is executed. When the first detection cycle is reached, step S500 is executed to determine whether the temperature difference between the indoor heat exchange inlet 191 and the indoor heat exchange outlet 192 of the indoor cavity 120 is within the preset perceived temperature difference threshold. If not, the fresh air exchange parameters for the current cycle are adjusted, and steps S200 to S400 are re-executed to complete the fresh air adjustment process for the current detection cycle. When the second detection cycle arrives, repeat the above steps until the temperature difference between the indoor heat exchange air inlet 191 and the indoor heat exchange air outlet 192 of the indoor cavity 120 is within the preset perceived temperature difference threshold, or the fresh air exchange parameters cannot be adjusted. The inability to adjust the fresh air exchange parameters includes situations such as the first duration and the second duration exceeding the preset duration or the folding angle being unable to be adjusted. This application embodiment does not impose any restrictions on these aspects.

[0029] The indoor air inlet and outlet temperature difference is used to indicate the temperature difference between the indoor heat exchange inlet 191 and the indoor heat exchange outlet 192 of the indoor cavity 120. The indoor air inlet and outlet temperature difference represents the temperature difference change caused by fresh air. The perceived temperature difference threshold indicates that too much fresh air is introduced at present, which cannot guarantee that the heat stored in the heat exchange core can fully exchange heat with the outdoor air entering the room, thus affecting the user experience.

[0030] Understandably, the folding angle of the control cover 231 is the mode angle that corresponds one-to-one with the fresh air mode, including: When the fresh air mode is in rapid replacement mode, the opening angle of the control cover 231 is the first mode angle; When the fresh air mode is not in rapid replacement mode, the folding angle of the control cover 231 is the second mode angle. The angle of the first mode is greater than that of the second mode.

[0031] By differentiating between two fresh air modes, different user experiences can be satisfied. Furthermore, setting the angle of the first mode to be greater than that of the second mode can improve the rate of fresh air exchange while maintaining the overall system performance of the integrated air conditioning unit.

[0032] Correspondingly, when the fresh air mode is in rapid replacement mode, the methods also include: After the fresh air fan 233 rotates in the first direction for a first duration and before the outdoor fan 170 in the external circulation heat exchange component 220 rotates for a second duration, the cover plate 231 is closed. After the outdoor fan 170 has been rotating for a second duration and before the fresh air fan 233 is controlled to rotate in the second direction, the cover 231 is opened. After the outdoor fan 170 has been rotating for a second duration, the indoor fan 150 in the internal circulation heat exchange assembly 210 is controlled to rotate.

[0033] By closing the cover 231 after the first time interval and before the outdoor fan 170 starts rotating in the rapid replacement mode, indoor airflow can be quickly exhausted. Simultaneously, opening the cover 231 after the second time interval allows outdoor air to enter the indoor space normally. By coordinating with the indoor fan 150 in the rapid replacement mode, fresh air can be delivered to more distant locations, accelerating indoor air circulation.

[0034] Understandably, adjusting the fresh air exchange parameters includes: When the fresh air mode is in the rapid replacement mode, the first unit step adjustment angle is obtained, and the folding angle is updated according to the first unit step adjustment angle; wherein, the first unit step adjustment angle represents the angle value of each adjustment when the cover plate 231 is adjusted from the mode angle to 0 according to the preset number of adjustments; When the fresh air mode is not a rapid replacement mode, obtain the unit step adjustment time of the first duration and the second duration, and update the first duration and the second duration according to the unit step adjustment time.

[0035] The smaller the first unit step adjustment angle, the less impact it has on the stability of system performance. Therefore, the number of adjustments is the maximum number of adjustments allowed within a preset time period to adjust the mode angle to 0 without affecting the stability of system performance.

[0036] The unit step adjustment duration represents the duration corresponding to the maximum fresh air volume allowed to pass under predetermined operating conditions without affecting the user experience. In some embodiments, the unit step adjustment duration is set to 1 second.

[0037] In some embodiments, the unit step adjustment duration for the first duration and the unit step adjustment duration for the second duration are the same.

[0038] Understandably, the method also includes: When the cooling mode of the integrated air conditioning unit is started and the fresh air mode is turned on, the initial folding angle of the control cover 231 is the rated operating angle, which is less than the mode angle. The temperature of the first sensing bulb of the air outlet duct of the evaporator 140 of the internal circulation heat exchange component 210 is periodically obtained. If the temperature of the first sensing bulb is greater than the preset maximum temperature of the refrigerant outlet pipe, the second unit step adjustment angle is obtained, and the folding angle in the current cycle is reduced by the second unit step adjustment angle; When the temperature of the first sensing bulb is less than or equal to the highest temperature of the refrigerant outlet pipe, the cover plate 231 is kept at the folding angle of the current cycle.

[0039] The above-mentioned adjustment process for fresh air in cooling mode under rated operating conditions is not limited in this application embodiment to whether the detection cycle of the fresh air adjustment process in cooling mode and the detection cycle of the fresh air adjustment process when heat exchange is not started are the same. Those skilled in the art can selectively set it according to the actual situation.

[0040] The temperature of the first sensing bulb is the detection result of the sensing bulb located at the air outlet duct of the evaporator 140. The highest temperature of the refrigerant outlet pipe is used to characterize whether the heat exchange efficiency meets the preset heat exchange requirements. This application embodiment does not limit how the highest temperature of the refrigerant outlet pipe is determined. Those skilled in the art can selectively set it according to actual needs, such as by actual measurement or simulation. In this regard, this application embodiment will not elaborate on each step.

[0041] Understandably, the outdoor fan 170 is a backward-curved centrifugal fan, and the ventilation hole 240 is located in the positive pressure area of ​​the fan cavity 250 where the backward-curved centrifugal fan is located.

[0042] By setting the outdoor fan 170 as a backward-curved centrifugal fan, and the ventilation hole 240 located in the positive pressure area of ​​the fan chamber 250 where the backward-curved centrifugal fan is located, fresh air can be quickly replaced by utilizing the strong air pressure difference caused by the backward-curved centrifugal fan when the cover plate 231 is open.

[0043] Understandably, the second duration is less than or equal to half the first duration.

[0044] Understandably, referring to Figure 3 and Figure 4 As shown, an integrated air conditioning unit according to an embodiment of this application includes: Casing 100; The partition 110 divides the shell 100 into an inner cavity 120 and an outer cavity 130. A ventilation hole 240 is provided at the first end of the partition 110. Internal circulation heat exchange component 210 is located inside the inner cavity 120; An external circulation heat exchange component 220 is located inside an outdoor cavity 130 and is provided with a fan cavity 250. The external circulation heat exchange component 220 includes an outdoor fan 170, which is located inside the fan cavity 250. Fresh air assembly 230 includes fresh air duct 232, cover plate 231, heat recovery core 234 and fresh air fan 233 located in fresh air duct 232. One side of cover plate 231 can be folded and installed on ventilation hole 240. The first end of fresh air duct 232 is connected to ventilation hole 240, and the second end of fresh air duct 232 is connected to indoor heat exchange air inlet 191 of indoor cavity 120. The control unit executes the control method described in the above embodiments.

[0045] This application does not limit how the cover plate 231 can be folded onto the ventilation hole 240. For example, in some embodiments, a movable hinge is provided on one side of the cover plate 231, and the movable hinge is connected to the driving end of the driving component. The cover plate 231 can be flipped by driving the movable hinge with a motor. This application does not limit the shape and size of the ventilation hole 240. In practical applications, it can be selectively set according to the allowable installation space.

[0046] This application does not limit the specific nature of the heat recovery core 234. The heat recovery core 234 is used to exchange heat with indoor air to store the heat of indoor air and to exchange heat with outdoor air to reduce the temperature difference between outdoor air and indoor air.

[0047] The first end of the fresh air duct 232 and the ventilation hole 240 are sealed.

[0048] This application embodiment does not limit the shape of the fresh air duct 232, only requiring that the second end of the fresh air duct 232 can be connected to both the indoor cavity 120 and the indoor heat exchange air inlet 191. In practical applications, when the entire refrigeration system is on, the indoor fan 150 will necessarily be on. At this time, the fresh air entering from the fresh air duct 232 and the air at the indoor heat exchange air inlet 191 are both blown into the indoor space after heat exchange through the evaporator under the action of the indoor fan 150. When the entire refrigeration system is not on, the indoor fan 150 can be turned on or off. In this case, when the entire refrigeration system is not on and the indoor fan 150 is on, the fresh air entering from the fresh air duct 232 can be blown further into the indoor space. When the entire refrigeration system is not on and the indoor fan 150 is not on, the fresh air entering from the fresh air duct 232 can directly enter the indoor space from the indoor heat exchange air inlet 191. For example, refer to Figure 3As shown, the fresh air duct 232 is a short square pipe with its second end facing upwards, leaving a gap between it and the side wall of the housing 100 to connect with the indoor heat exchange air inlet 191. At this time, the indoor fan 150 in the indoor cavity 120 transports the air entering through the indoor heat exchange air inlet 191 and the air flowing out from the second end of the fresh air duct 232 to the evaporator, and then into the indoor space through the indoor heat exchange air outlet 192.

[0049] Understandably, the second end of the fresh air duct 232 is equipped with a filter 235, and the heat recovery core 234 is located between the fresh air fan 233 and the filter 235.

[0050] Understandably, the outdoor fan 170 is a backward-curved centrifugal fan, and the ventilation hole 240 is located in the positive pressure area of ​​the fan cavity 250 where the backward-curved centrifugal fan is located.

[0051] By configuring the outdoor fan 170 as a backward-curved centrifugal fan, and with the ventilation hole 240 located in the positive pressure region of the fan chamber 250 where the backward-curved centrifugal fan is located, air is continuously drawn in from the outdoor air inlet 131 when the backward-curved centrifugal fan is operating, and the fan chamber 250 is pressurized to a positive pressure state, driving the airflow to be discharged from the outdoor air outlet. At this time, the pressure distribution cloud map of the outdoor chamber 130 is as follows: Figure 6 As shown, the fan side area inside the fan cavity 250 is under positive pressure at this time. Therefore, the air pressure difference between the fan cavity 250 and the other areas can be used to realize the automatic circulation of fresh air in the fresh air duct 232 and meet the user experience and air quality requirements.

[0052] Understandably, the evaporator 140 of the internal circulation heat exchange component 210 is located below the indoor heat exchange air inlet 191, and an air inlet channel is formed between the indoor heat exchange air inlet 191 and the indoor air inlet of the evaporator 140. The second end of the fresh air duct 232 is connected to one side of the air inlet channel to connect to the air inlet of the evaporator 140. This allows outdoor air entering from the fresh air duct 232 and indoor air entering from the indoor heat exchange air inlet 191 to mix before entering the evaporator 140 and flowing out from the outdoor heat exchange air outlet.

[0053] Reference Figures 3 to 5 The integrated air conditioning device and control method according to embodiments of this application are described, wherein, as Figure 3 and Figure 4As shown, the entire housing 100 of the integrated air conditioning unit is divided into two non-communicating indoor cavities 120 and 130 by a partition 110. When a ventilation hole 240 is provided on the partition 110, the indoor cavity 120 and the outdoor cavity 130 are connected through the unclosed ventilation hole 240. Correspondingly, the first end of the fresh air duct 232 is sealed to the ventilation hole 240, and the second end of the fresh air duct 232 is connected to the air intake channel between the indoor heat exchange air inlet 191 and the air inlet of the evaporator 140. A foldable cover 231 is also provided on the ventilation hole 240, and from the first end to the second end of the fresh air duct 232, a fresh air fan 233, a heat recovery core 234, and a filter 235 are arranged in sequence. The fresh air fan 233 and the ventilation vent 240 are both located directly above the positive pressure area of ​​the fan cavity 250 where the outdoor fan 170 of the external circulation heat exchange assembly 220 is located. The condenser 160 in the external circulation heat exchange assembly 220 is located on the first side of the outdoor fan 170 within the fan cavity 250. The evaporator 140 is located above the condenser 160 and on the first side of the fan cavity 250. Figure 4 As shown, the cover plate 231 is fixed to the partition plate 110 at one end by a movable hinge, and its opening and closing actions are driven by a stepper motor. When closed, it is necessary to ensure that there is no gap between the movable cover plate 231 and the partition plate 110. In some embodiments, the filter is a HEPA filter. The heat recovery core 234 absorbs heat from the storage system when gas passes through. In applications with large indoor temperature differences and high humidity, the fresh air introduced by the fresh air component 230 in this embodiment replaces the indoor air, resulting in smaller fluctuations in indoor ambient temperature. The outlet temperature of the fresh air is not significantly different from the indoor ambient temperature, and it also takes into account both temperature and humidity adjustments. In the case of the integrated air conditioning device in this embodiment, when the fresh air mode is enabled, its control flow is as follows: When the fresh air mode is activated, the system first checks whether the heat exchange system is on, and then executes different fresh air adjustment procedures depending on whether the heat exchange system is on or off: When the heat exchange system is running (i.e., in the case of heat exchange startup), refer to Figure 6 As shown, the process is as follows: S1. Cover plate 231 opens to angle α, where angle α is a preset angle for the entire unit. This angle is determined based on the fact that the entire system does not affect the heat dissipation of the condenser 160 in the outdoor cavity 130 and the system capacity during rated operating condition testing, and is used to indicate the rated operating condition angle. At this time, since the outdoor fan 170 is always running, there is a pressure difference between the fan cavity 250 and the indoor air. The outdoor air in the fan cavity 250 enters the evaporator 140 for heat exchange through the fresh air duct 232, which is equivalent to part of the air being externally circulated. At the same time, the detection temperature t℃ of the outlet temperature sensor of the evaporator 140 in the indoor cavity 120 is periodically acquired (where t is the temperature of the first temperature sensor, used to determine the cooling capacity).

[0054] S2. Determine if t℃≤T℃ is satisfied. If t℃≤T℃ is detected, where T℃ is the highest temperature of the air outlet of the evaporator 140 when the whole system is operating normally, it means that the fresh air of the whole unit is normally turned on. If t℃≤T℃ is detected, it means that the whole unit is not powerful enough, too much outdoor hot air enters, the indoor temperature drops more slowly, which will affect the user experience. Jump to S3 to adjust the fresh air volume by adjusting the opening angle α of the cover 231. S3, cover 231 opens, reducing the opening angle by α / x°. This divides the original preset opening angle α of the entire unit into x parts, reducing the opening angle by α / x° in multiple cycles. Then, it jumps to S2 to re-determine the indoor air outlet temperature t℃ until t℃≤T℃, at which point the unit's fresh air intake is activated normally. When t℃≤T℃, it indicates that introducing fresh air will not affect the indoor cooling capacity.

[0055] When the heat exchange system is not turned on (i.e., the heat exchange is not started), refer to Figure 6 As shown, since the cooling system can no longer meet the cooling requirements of the outdoor fresh air, the fresh air component 230 is needed for comprehensive adjustment. The process is as follows: S4. Determine if the selected fresh air mode is the rapid replacement mode. If yes, proceed to S5 to enter fresh air mode 1; otherwise, proceed to S6 to enter fresh air mode 2.

[0056] S5. Enter air intake mode 1 to link the entire fresh air system with the indoor and outdoor fans and indoor temperature sensors. The specific process is as follows: S5.1, the cover plate 231 opens at an angle β (where β > α); the angle β is the mode angle corresponding to mode 1.

[0057] S5.2, the fresh air fan 233 reverses for t seconds (that is, rotates in the first direction for a first duration t) to deliver the indoor stale air to the outdoor cavity 130. In this process, after the indoor stale air enters the fresh air duct 232, the heat exchange core absorbs the heat of the indoor air and stores it.

[0058] S5.3 Close the cover plate 231 to block the connection between the indoor and outdoor cavities 130, and turn on the outdoor motor for 1 / 2 t seconds (that is, the outdoor fan 170 rotates continuously for the second duration) to completely replace the air in the outdoor cavity 130.

[0059] S5.4 After completing the above actions, the cover plate 231 opens at angle β, the fresh air fan 233 rotates forward for t seconds to introduce outdoor air into the indoor cavity 120, and the indoor fan 150 turns on for t seconds to send the fresh air introduced from the outside to a more distant location. This step can mix the outdoor air and the indoor air, reducing the temperature difference between the outlet air temperature and the indoor ambient temperature.

[0060] S5.5. The indoor outlet air temperature t1℃ and the indoor ambient temperature T1℃ are detected. Taking an indoor temperature higher than the outdoor temperature as an example, it is determined whether t1℃≤T1-m℃ is satisfied (where m is a constant value, measured based on comfort experience under different ambient temperatures). If satisfied, it indicates that the indoor outlet air temperature is too low, and the opening angle β of the movable cover 231 needs to be gradually reduced. In this case, the angle β of the current cycle is the opening angle of the previous cycle reduced by β / x°, so that when the cover 231 is adjusted from the mode angle to 0, it takes x adjustments to complete the adjustment. If t1℃≤T1-m℃ is not satisfied, it indicates that the fresh air system is operating normally. The indoor outlet air temperature can be detected by a temperature sensor located at the indoor heat exchange outlet 192, and the indoor ambient temperature can be detected by a temperature sensor located at the indoor heat exchange inlet 191.

[0061] S6. Enter Fresh Air Mode 2. The specific process is as follows: S6.1, Cover plate 231 opens at an angle γ (where β > γ > α). S6.2, the fresh air fan 233 reverses t seconds, delivering the indoor stale air to the outdoor cavity 130 (at this time, the heat exchange core absorbs the heat of the indoor air and stores it, and then releases the stored heat to the outdoor air when the outdoor air comes in). S6.3, Fresh air fan 233 forward t seconds introduces outdoor air into indoor cavity 120 (at this time, the air entering the room absorbs heat from the heat exchange core). S6.4. Detect the indoor outlet air temperature t1℃ and the indoor ambient temperature T1℃. Taking an indoor temperature higher than the outdoor temperature as an example, determine whether t1℃≤T1-m℃ (where m is a constant value, measured based on comfort experience under different ambient temperatures). If satisfied, it indicates that the indoor outlet air temperature is too low. At this time, since neither the indoor nor outdoor fans are turned on, and only the fresh air fan 233 is turned on, it is necessary to adjust the time t to ensure that the heat stored in the heat exchange core is sufficient to heat the outdoor air entering the room. Gradually decrease the time t in 1-second increments and rerun the above-mentioned fresh air fan 233 reverse and forward rotation program until t1℃≤T1-m℃ is no longer satisfied. At this time, the fresh air will be turned on normally. The indoor outlet air temperature is detected by a temperature sensor located at the indoor heat exchange inlet 191, and the indoor ambient temperature is detected by a temperature sensor located at the indoor heat exchange outlet 192.

[0062] This application also provides a computer-readable storage medium that stores a computer program. When the computer program is executed by a processor, it implements the control method of the integrated air conditioning device described above.

[0063] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0064] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0065] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0066] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0067] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0068] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0069] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0070] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0071] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0072] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0073] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes multiple instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing programs, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0074] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A control method for an integrated air conditioning unit, characterized in that, The integrated air conditioning unit includes a shell, a partition, an internal circulation heat exchange component, an external circulation heat exchange component, a fresh air duct, a cover plate, a heat recovery core, and a fresh air fan. The partition divides the shell into an indoor cavity and an outdoor cavity. The internal circulation heat exchange component is located in the indoor cavity, and the external circulation heat exchange component is located in the outdoor cavity. A ventilation hole is provided at the first end of the partition. One side of the cover plate can be folded over the ventilation hole. The two ends of the fresh air duct are respectively connected to the ventilation hole and the indoor heat exchange air inlet of the indoor cavity. The method includes: In response to the activation of the fresh air mode when the heat exchange is not started, the initial folding angle of the cover is controlled to be a mode angle that corresponds one-to-one with the fresh air mode. Fresh air exchange start-up: In response to detecting that the fresh air exchange start-up conditions are met, the fresh air fan is controlled to rotate in the first direction and continue for a first duration; After the fresh air fan rotates in the first direction for a first duration, the outdoor fan in the external circulation heat exchange assembly is controlled to rotate for a second duration. After the outdoor fan has been rotating for a second duration, the fresh air fan is controlled to rotate in a second direction opposite to the first direction. If it is determined that the temperature difference between the indoor air inlet and outlet is not within the preset perceived temperature difference threshold, the fresh air exchange parameters are adjusted and the process jumps to the fresh air exchange start-up step. The fresh air exchange parameters are at least one of the first duration, the second duration, and the folding angle of the cover plate.

2. The control method for the integrated air conditioning unit according to claim 1, characterized in that, The control of the opening angle of the cover plate to be a mode angle corresponding to each of the fresh air modes includes: when the fresh air mode is a rapid replacement mode, the control of the opening angle of the cover plate to be a first mode angle; when the fresh air mode is a non-rapid replacement mode, the control of the opening angle of the cover plate to be a second mode angle; wherein, the first mode angle is greater than the second mode angle. Accordingly, when the fresh air mode is a rapid replacement mode, the method further includes: After the fresh air fan rotates in the first direction for a first duration and before the outdoor fan in the external circulation heat exchange assembly rotates for a second duration, the cover is controlled to close. After the outdoor fan has been rotating for a second duration and before the fresh air fan is controlled to rotate in the second direction, the cover is controlled to open. After the outdoor fan has been rotating for a second duration, the indoor fan in the internal circulation heat exchange assembly is controlled to rotate.

3. The control method for the integrated air conditioning unit according to claim 1, characterized in that, The adjustment of fresh air exchange parameters includes: When the fresh air mode is a rapid replacement mode, a first unit step adjustment angle is obtained, and the folding angle is updated according to the first unit step adjustment angle; wherein, the first unit step adjustment angle represents the angle value of each adjustment when the cover is adjusted from the mode angle to 0 according to a preset number of adjustments; When the fresh air mode is a non-rapid replacement mode, the unit step adjustment duration of the first duration and the second duration is obtained, and the first duration and the second duration are updated according to the unit step adjustment duration.

4. The control method for the integrated air conditioning unit according to claim 1, characterized in that, The method further includes: When the cooling mode is activated and the fresh air mode is turned on, the initial folding angle of the cover is controlled to be the rated operating angle, which is less than the mode angle. The temperature of the first sensing bulb of the evaporator outlet pipe of the internal circulation heat exchange component is periodically obtained; When the temperature of the first temperature sensing bulb is greater than the preset maximum temperature of the refrigerant outlet pipe, the second unit step adjustment angle is obtained, and the folding angle in the current cycle is reduced by the second unit step adjustment angle; When the temperature of the first temperature sensor is less than or equal to the highest temperature of the refrigerant outlet pipe, the folding angle of the cover plate is maintained in the current cycle.

5. The control method for the integrated air conditioning unit according to claim 1, characterized in that, The outdoor fan is a backward-curved centrifugal fan, and the ventilation hole is located in the positive pressure area of ​​the fan cavity where the backward-curved centrifugal fan is located.

6. The control method for the integrated air conditioning unit according to claim 5, characterized in that, The second duration is less than or equal to half of the first duration.

7. An integrated air conditioning unit, characterized in that, include: case; A partition plate divides the shell into an inner cavity and an outer cavity, and a ventilation hole is provided at the first end of the partition plate; An internal circulation heat exchange assembly is located inside the indoor cavity; An external circulation heat exchange component is located inside the outdoor cavity, and the external circulation heat exchange component is provided with a fan cavity; the external circulation heat exchange component includes an outdoor fan, which is disposed inside the fan cavity; The fresh air assembly includes a fresh air duct, a cover plate, a heat recovery core and a fresh air fan located inside the fresh air duct. One side of the cover plate can be folded over and installed on the ventilation hole. The first end of the fresh air duct is connected to the ventilation hole, and the second end of the fresh air duct is connected to the indoor heat exchange air inlet of the indoor cavity. A control component that performs the control method of the integrated air conditioning unit as described in claim 1.

8. The integrated air conditioning unit according to claim 7, characterized in that, A filter screen is provided at the second end of the fresh air duct, the fresh air fan is located near the ventilation hole, and the heat recovery core is located between the fresh air fan and the filter screen.

9. The integrated air conditioning unit according to claim 7, characterized in that, The outdoor fan is a backward-curved centrifugal fan, and the ventilation hole is located in the positive pressure area of ​​the fan cavity where the backward-curved centrifugal fan is located.

10. A computer-readable storage medium storing computer-executable instructions, characterized in that, The computer-executable instructions are used by a processor to execute the control method of the integrated air conditioning device as described in any one of claims 1 to 6.

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