Fresh air conditioner indoor unit, Fresh air conditioner and control method thereof

Abstract

The application provides a fresh air conditioner indoor unit, a fresh air conditioner and a control method thereof. The indoor unit comprises a fresh air component and an indoor temperature regulating component. The fresh air component has an indoor air inlet and an indoor air outlet which are controllable to be opened and closed. The indoor air inlet is communicated with an internal air duct of the indoor temperature regulating component. The indoor air outlet is controllable to be communicated with an outdoor space. When it is needed to discharge the air in the indoor temperature regulating component, the fresh air fan can drive the air in the indoor temperature regulating component to be discharged to the outdoor space in sequence through the indoor air inlet, the indoor air outlet and a fresh air pipeline. The application can discharge the low-quality air in the indoor unit by using the fresh air fan when it is needed to discharge the air in the indoor temperature regulating component, so as to prevent the user from feeling uncomfortable and being threatened in health. The condensed water generated in the heat exchanger during operation can be dried by using the discharged air, so as to effectively prevent or delay the occurrence of the bacterial breeding and mildew phenomenon caused by the residual moisture.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning technology, specifically relating to an indoor unit of a fresh air conditioner, a fresh air conditioner, and a control method thereof. Background Technology

[0002] After cooling, air conditioners often leave condensate residue on the evaporator fins. In this humid environment, bacteria multiply rapidly, leading to mold growth and unpleasant odors inside the unit. When the fan function is turned on, these odors and bacteria are blown into the room, seriously affecting the user's health and comfort. Existing air conditioners typically use a self-cleaning method to remove mold and dust from the evaporator. This method involves running the air conditioner in cooling mode to frost the indoor heat exchanger before switching to heating mode to defrost. However, even after frosting and defrosting, this self-cleaning technology still requires continuous high-temperature drying and sterilization at 56°C, which can raise the room temperature and increase energy consumption while affecting user comfort.

[0003] Patent CN115493273A provides a method for generating ozone using an ozone generator to sterilize and eliminate odors, but this method has limited effectiveness, and ozone in a closed room is harmful to the human body. Summary of the Invention

[0004] Therefore, the present invention provides a fresh air conditioner indoor unit, a fresh air conditioner and its control method, which can solve the technical problems in the prior art where the self-cleaning method of the air conditioner indoor unit consumes a lot of energy and easily leads to large fluctuations in indoor temperature, reducing user comfort, or the ozone sterilization and deodorization method poses a risk to the user's health.

[0005] To address the above problems, the present invention provides an indoor unit for a fresh air conditioning unit, comprising:

[0006] The fresh air component and the indoor temperature control component are provided. The fresh air component has a fresh air inlet, a fresh air outlet, an internal air inlet, and an internal air outlet that can be controlled to open and close. The internal air inlet is connected to the internal air duct of the indoor temperature control component, and the internal air outlet is controllably connected to the outdoor space. When it is necessary to exhaust the air in the indoor temperature control component, the fresh air fan of the fresh air component can drive the air in the indoor temperature control component to be exhausted to the outdoor space through the internal air inlet and the internal air outlet in sequence.

[0007] In some embodiments, the indoor temperature control component includes a heat exchanger located within the internal air duct, and the internal air inlet is located on the air outlet side of the heat exchanger.

[0008] In some embodiments, the indoor temperature control component has an indoor return air inlet on the air inlet side of the heat exchanger and an indoor supply air inlet on the air outlet side of the heat exchanger, wherein the indoor supply air inlet is provided with an air guide plate, and / or the indoor return air inlet is provided with an air inlet baffle.

[0009] In some embodiments, the fresh air component includes a fresh air housing with a fresh air duct inside, a fresh air fan disposed within the fresh air duct, and an air purification component disposed between the fresh air inlet and the fresh air fan.

[0010] In some embodiments, the fresh air inlet, fresh air outlet, internal air inlet, and internal air outlet are all constructed on the fresh air housing. The fresh air inlet and internal air outlet are arranged adjacent to each other, and the fresh air outlet and internal air inlet are arranged adjacent to each other. The fresh air component further includes a first baffle and a second baffle. The first baffle and the second baffle have a purification state and a fresh air state. When the first baffle and the second baffle are in the purification state, the first baffle blocks the fresh air inlet and the second baffle blocks the fresh air outlet. When the first baffle and the second baffle are in the fresh air state, the first baffle blocks the internal air outlet and the second baffle blocks the internal air inlet.

[0011] The present invention also provides a fresh air air conditioner, including the above-mentioned fresh air air conditioner indoor unit.

[0012] The present invention also provides a control method for a fresh air conditioner as described above, comprising the following steps:

[0013] Obtain user control commands for the fresh air conditioner;

[0014] When the control command is a shutdown command, the first and second baffles are controlled to be in a purification state, and the fresh air fan is controlled to rotate so that the air in the indoor space is discharged to the outdoor space through the heat exchanger air inlet and air outlet of the indoor temperature regulating component.

[0015] In some embodiments, when the indoor air supply vent of the indoor temperature control component is provided with an air guide plate and the indoor return air vent is provided with an air inlet baffle, when the control command is a shutdown command, the air guide plate is also controlled to close the indoor air supply vent and the air inlet baffle is controlled to open.

[0016] In some implementations, when the control command is a power-on command, real-time air quality parameters in the internal air duct of the indoor temperature control component are acquired. When the acquired real-time air quality parameters are not lower than preset air quality parameters, a purification prompt command is fed back, allowing the user to choose whether to exhaust the air in the internal air duct of the indoor temperature control component; or...

[0017] When the control command is a power-on command, the real-time air quality parameters in the internal air duct of the indoor temperature control component are obtained. When the real-time air quality parameters are not lower than the preset air quality parameters, the air in the internal air duct of the indoor temperature control component is controlled to be discharged.

[0018] In some embodiments, when air is discharged from the internal air duct of the indoor temperature regulating component, the first baffle and the second baffle are controlled to be in a purification state, and the fresh air fan is controlled to rotate, so that the air in the indoor space is discharged to the outdoor space through the heat exchanger air inlet and the air outlet of the indoor temperature regulating component in sequence.

[0019] In some implementations, when the first baffle and the second baffle are in a purification state, the higher the real-time air quality parameter, the higher the rotation speed of the fresh air fan, and the longer the running time of the fresh air fan.

[0020] In some implementations, when the first baffle and the second baffle are in a purification state and the control command is a power-on command, the first baffle and the second baffle are switched to a fresh air state after a first preset time period in the purification state; and / or, when the first baffle and the second baffle are in a purification state and the control command is a power-off command, the first baffle and the second baffle are switched to a fresh air state after a second preset time period in the purification state.

[0021] The present invention provides an indoor unit for a fresh air conditioner, a fresh air conditioner, and a control method thereof, which have the following beneficial effects:

[0022] An internal air inlet connected to the internal air duct of the indoor temperature control unit and an internal air outlet connected to the outdoor space are added to the fresh air component. When it is necessary to exhaust the air in the indoor temperature control unit, the rotational drive of the fresh air fan in the fresh air component is used to exhaust the low-quality air inside the unit, preventing discomfort and health threats to users. The exhaust air dries the condensate generated in the heat exchanger during operation, effectively preventing or delaying the growth of bacteria and mold caused by residual moisture. This effectively avoids the disadvantages of the existing self-cleaning method of frosting and defrosting, which has high energy consumption and is prone to large fluctuations in indoor temperature, or the potential health hazards of ozone sterilization and deodorization.

[0023] The air inlet is located on the air outlet side of the heat exchanger, that is, on the air outlet side of the internal air duct. When the air inside the unit is exhausted, the fresh air fan drives the air in the indoor space into the indoor temperature control component (that is, inside the unit). This part of the air will enter the heat exchanger from the air inlet side, carrying away any low-quality air that may be present inside, and then flow out from its air outlet side and be discharged. This makes the exhaust of low-quality air inside the unit more thorough and further improves the comfort of using the air conditioner.

[0024] The adjacent placement of the fresh air inlet and the internal air outlet, as well as the fresh air supply outlet and the internal air inlet, allows each adjacent air outlet to share a single baffle. This means that the switching of the states of the aforementioned first and second baffles enables on / off control, thereby matching the fresh air components with the exhaust air or fresh air intake conditions. This further compresses the structure and simplifies the structural design. Attached Figure Description

[0025] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0026] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0027] Figure 1 This is a schematic diagram of the internal structure of the indoor unit of the fresh air conditioner according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of the internal structure of the fresh air component in the system, showing the first and second baffles in the purification state;

[0029] Figure 3 for Figure 1 A schematic diagram of the internal structure of the fresh air component in the diagram shows the first baffle and the second baffle in the fresh air state;

[0030] Figure 4 This is a flowchart illustrating the odor removal control process in the control method of the fresh air air conditioner of the present invention.

[0031] Figure 5 This is a flow chart of the heat exchanger drying control process in the control method of the fresh air air conditioner of the present invention.

[0032] The reference numerals in the attached figures are as follows:

[0033] 11. Fresh air inlet; 12. Fresh air outlet; 13. Internal air inlet; 14. Internal air outlet; 15. Fresh air fan; 161. Fresh air housing; 162. Air purification assembly; 171. First baffle; 172. Second baffle;

[0034] 21. Heat exchanger; 23. Indoor air outlet; 231. Air guide plate; 24. Cross-flow fan;

[0035] 3. Inner casing. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0039] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0040] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0041] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0042] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0043] See also Figure 1and Figure 5 As shown, according to an embodiment of the present invention, a fresh air air conditioner indoor unit is provided, comprising:

[0044] In a preferred embodiment, the aforementioned fresh air component (not labeled in the figure) and indoor temperature control component (not labeled in the figure) are enclosed by the indoor unit casing 3, thereby making the structure of the indoor unit of the fresh air air conditioner more compact and having better appearance consistency. The fresh air component has a controllable on / off fresh air inlet 11, a fresh air outlet 12, an internal air inlet 13, and an internal air outlet 14. For example, the aforementioned fresh air inlet 11, fresh air outlet 12, internal air inlet 13, and internal air outlet 14 can be independently controlled. The internal air inlet 13 is connected to the internal air duct (not labeled in the figure) of the indoor temperature control component. Both the fresh air inlet 11 and the internal air outlet 14 are connected to the outdoor space via a fresh air duct (not shown in the figure). When it is necessary to exhaust the air inside the indoor temperature control component, the fresh air fan 15 of the fresh air component can drive the air inside the indoor temperature control component to be exhausted to the outdoor space through the indoor air inlet 13, the indoor air outlet 14 and the fresh air duct. The aforementioned air that needs to be exhausted from the indoor temperature control component is, for example, when the fresh air air conditioner is first turned on or when the fresh air air conditioner is turned off. Specifically, when the fresh air air conditioner is first turned on, the fresh air fan 15 exhausts the air inside the indoor temperature control component, which can exhaust this part of the air that may be of poor quality, thus preventing discomfort and health threats to users. When the fresh air air conditioner is turned off, the exhaust air can be used to dry the condensate generated in the heat exchanger 21 during operation, effectively preventing or delaying the growth of bacteria and mold caused by residual moisture.

[0045] In this technical solution, an internal air inlet 13 connected to the internal air duct of the indoor temperature control component and an internal air outlet 14 connected to the outdoor space are added to the fresh air component. When it is necessary to exhaust the air in the indoor temperature control component, the rotational drive of the fresh air fan 15 in the fresh air component is used to exhaust the low-quality air in the unit, preventing discomfort and health threats to users. The exhaust air is used to dry the condensate generated in the heat exchanger 21 during operation, effectively preventing or delaying the growth of bacteria and mold caused by residual moisture. This effectively avoids the disadvantages of the existing self-cleaning method of frosting and defrosting, which has high energy consumption and is prone to large fluctuations in indoor temperature, or the potential health hazards of ozone sterilization and deodorization.

[0046] It should be noted that the rotation direction of the fresh air fan 15 during the exhaust of air from the unit is opposite to the rotation direction of the fresh air fan 15 during the fresh air introduction process. Generally speaking, in order to achieve the purpose of compact structure and miniaturization of fresh air air conditioners, the aforementioned fresh air fan 15 often adopts a centrifugal fan to realize its air drive function.

[0047] In one specific embodiment, the aforementioned fresh air outlet 12 can be controllably connected to the indoor environment, that is, the introduced fresh air is directly delivered into the indoor space at the fresh air outlet 12. In another preferred embodiment, the fresh air outlet 12 can be connected to the internal air duct of the indoor temperature control component, and it is located on the air inlet side of the heat exchanger 21 in the internal air duct. Thus, the temperature of the introduced fresh air can be adjusted by the heat exchanger 21 before being delivered into the indoor space, preventing the phenomenon of large fluctuations in indoor temperature caused by a large difference between the temperature of the introduced fresh air and the indoor temperature, thereby improving the comfort of the fresh air air conditioner when introducing fresh air.

[0048] As mentioned above, the indoor temperature control component has a heat exchanger 21, which is located in the internal air duct. That is, the heat exchanger 21 divides the aforementioned internal air duct into two parts: one part is the air inlet side and the other part is the air outlet side. Preferably, the internal air inlet 13 is located on the air outlet side of the heat exchanger 21.

[0049] In this technical solution, the air inlet 13 is located on the air outlet side of the heat exchanger 21, that is, on the air outlet side of the internal air duct. When the air inside the unit is exhausted, the fresh air fan 15 drives the air in the indoor space into the indoor temperature control component (that is, inside the unit). This part of the air will enter the heat exchanger 21 from the air inlet side, carrying any low-quality air that may be present inside, and then flow out and be discharged from its air outlet side, making the exhaust of low-quality air inside the unit more thorough and further improving the comfort of using the air conditioner.

[0050] See details Figure 1 As shown, in some implementations,

[0051] The indoor temperature control component has an indoor return air vent (not shown in the figure, not labeled) on the air inlet side of the heat exchanger 21 and an indoor air supply vent 23 on the air outlet side of the heat exchanger 21. Objectively, the indoor return air vent and the indoor air supply vent 23 correspond to the inlet and outlet of the aforementioned internal air duct, respectively. The aforementioned heat exchanger 21 is located in the section between the return air vent and the indoor air supply vent 23. The indoor air supply vent 23 is provided with a guide plate 231. The guide plate 231 can guide or sweep the air during the temperature control (cooling or heating) operation of the air conditioner. Under certain operating conditions, such as when the air conditioner is turned off or during the exhaust of low-quality air from inside the unit, the indoor air supply vent 23 can be sealed to prevent external dust from entering the unit.

[0052] In a preferred embodiment, the indoor return air vent is provided with an air inlet baffle (not shown or labeled in the figure). The air inlet baffle can be in the open state when the air conditioner is adjusting the temperature or during the exhaust of low-quality air from inside the unit. At this time, it, together with the closed air guide plate 231, allows the air in the indoor space to flow through the heat exchanger 21 to the indoor air inlet 13. When the air conditioner is turned off, the air inlet baffle is closed to prevent external dust from entering the unit.

[0053] See also Figure 2 and Figure 3 As shown, in some embodiments, the fresh air component includes a fresh air housing 161, which has a fresh air duct (not labeled in the figure) inside. The fresh air fan 15 is disposed in the fresh air duct, and the fresh air duct is also provided with an air purification component 162, which can filter and purify the fresh air introduced from the outside. The air purification component 162 is disposed between the fresh air inlet 11 and the fresh air fan 15. The aforementioned air purification component 162 is, for example, a HEPA filter commonly used in the industry.

[0054] In this technical solution, the air purification component 162 is placed between the fresh air inlet 11 and the fresh air fan 15. This ensures that when low-quality air is exhausted from the unit, this low-quality air will not be purified or filtered by the air purification component 162. At the same time, when the heat exchanger 21 is dried and air is exhausted, the condensate mixed in with the exhaust air will not contaminate or wet the air purification component 162, thereby improving the service life of the air purification component 162.

[0055] In a preferred embodiment, the air purification component 162 is arranged at an angle on the air intake side of the aforementioned fresh air fan 15 during the fresh air introduction process, thereby allowing the height of the aforementioned fresh air housing 161 to be designed to be smaller and the overall structure of the fresh air component to be more compact.

[0056] In some embodiments, the fresh air inlet 11, fresh air outlet 12, indoor air inlet 13, and indoor air outlet 14 are all constructed on the fresh air housing 161. The fresh air inlet 11 and indoor air outlet 14 are arranged adjacent to each other, and the fresh air outlet 12 is arranged adjacent to the indoor air inlet 13. The fresh air component also includes a first baffle 171 and a second baffle 172, which can be specifically assembled onto the fresh air housing 161. The first baffle 171 and the second baffle 172 have a purification state and a fresh air state. The purification state corresponds to the state when the fresh air air conditioner is operating and exhausting indoor air. The fresh air state corresponds to the state when the fresh air air conditioner is operating and introducing fresh air from the outside into the room. When the first baffle 171 and the second baffle 172 are in the purification state, i.e., see [reference needed] Figure 2 As shown, in the state indicated, the first baffle 171 cuts off the fresh air inlet 11, and the second baffle 172 cuts off the fresh air outlet 12. When the first baffle 171 and the second baffle 172 are in the fresh air state, that is, see [reference needed] Figure 3 As shown, the first baffle 171 cuts off the internal air outlet 14, and the second baffle 172 cuts off the internal air inlet 13.

[0057] In this technical solution, the adjacent fresh air inlet 11 and the internal air outlet 14, and the fresh air outlet 12 and the internal air inlet 13 allow each adjacent air outlet to share a baffle. That is, the state switching of the aforementioned first baffle 171 and second baffle 172 realizes the on / off control, thereby making the fresh air component match the external exhaust air or fresh air introduction conditions, making the structure more compact and simplifying the structural design.

[0058] For details, please refer to [link / reference]. Figure 2 and Figure 3 As shown, the first baffle 171 can switch between the purification state and the fresh air state by sliding in a straight line. At this time, the aforementioned fresh air inlet 11 and the internal air outlet 14 are set at the same level. The second baffle 172 can switch between the purification state and the fresh air state by rotating. At this time, the aforementioned fresh air outlet 12 and the internal air inlet 13 are set at a certain angle (e.g., vertically).

[0059] According to an embodiment of the present invention, a fresh air air conditioner is also provided, including the above-described fresh air air conditioner indoor unit.

[0060] Because this fresh air air conditioner uses the aforementioned fresh air air conditioner indoor unit, an internal air inlet 13 connected to the internal air duct of the indoor temperature control component and an internal air outlet 14 connected to the fresh air duct are added to the fresh air component. When it is necessary to exhaust the air in the indoor temperature control component, the rotational drive of the fresh air fan 15 in the fresh air component is used to exhaust the low-quality air in the unit, preventing discomfort and health threats to users. The exhaust air dries the condensate generated in the heat exchanger 21 during operation, effectively preventing or delaying the growth of bacteria and mold caused by residual moisture. It effectively avoids the disadvantages of the existing self-cleaning method of defrosting, which has high energy consumption and is prone to large fluctuations in indoor temperature, or the potential health hazards of using ozone sterilization and deodorization.

[0061] According to an embodiment of the present invention, a control method for a fresh air conditioner as described above is also provided, comprising the following steps:

[0062] Obtain user control commands for the fresh air conditioner;

[0063] When the control command is a shutdown command, the first baffle 171 and the second baffle 172 are controlled to be in a purification state, and the fresh air fan 15 is controlled to rotate so that the air in the indoor space is discharged to the outdoor space through the heat exchanger 21 of the indoor temperature control component, the indoor air inlet 13, the indoor air outlet 14 and the fresh air duct.

[0064] In this technical solution, when the fresh air conditioner receives a shutdown command (which can be triggered by the user), the first baffle 171 and the second baffle 172 are controlled to be in a purification state. Driven by the rotating fresh air fan 15, the air in the indoor space is sequentially discharged to the outdoor space through the air inlet 13, the air outlet 14, and the fresh air duct of the heat exchanger 21 of the indoor temperature control component. This dries the condensate (generally generated during the cooling process) formed in the heat exchanger 21 and the internal air duct, effectively preventing or delaying the growth of bacteria and mold caused by residual moisture. It is also understood that this process can remove dust that enters the heat exchanger 21 and the internal air duct to a certain extent, improving the cleanliness of the heat exchanger 21.

[0065] In a preferred embodiment, when the indoor air supply vent 23 of the indoor temperature control component is provided with an air guide plate 231 and the indoor return air vent is provided with an air inlet baffle, when the control command is a shutdown command, the air guide plate 231 is also controlled to close the indoor air supply vent 23 and the air inlet baffle is controlled to open.

[0066] In this technical solution, when air is exhausted, the air guide plate 231 is closed and the air inlet baffle is opened, which can effectively ensure that indoor air enters the air outlet side through the air inlet side of the heat exchanger 21, ensuring a sufficient drying effect for residual condensate inside the heat exchanger 21.

[0067] In a preferred embodiment, when the indoor air inlet 13 is located on the air inlet side of the heat exchanger 21, the dirt carried by the fresh air conditioner during the temperature adjustment process (indoor return air) and remaining on the air inlet side of the heat exchanger 21 can be removed to a certain extent, ensuring the cleanliness of the heat exchanger 21.

[0068] In some implementations...

[0069] When the control command is a power-on command, the real-time air quality parameters in the internal air duct of the indoor temperature control component are acquired. When the acquired real-time air quality parameters are not lower than the preset air quality parameters, a purification prompt command is fed back, allowing the user to choose whether to exhaust the air in the internal air duct of the indoor temperature control component. At this time, the purification prompt command is conveniently displayed as a dialog box on the screen for the user to select. If the user chooses to exhaust the air, the air conditioner will perform the corresponding exhaust action; otherwise, the air conditioner will perform the normal temperature control action (such as cooling or heating). This technical solution adopts a manual selection method for air exhaust, and this control method is human-centered.

[0070] In another feasible implementation, when the control command is a power-on command, the real-time air quality parameters in the internal air duct of the indoor temperature control component are obtained. When the real-time air quality parameters are not lower than the preset air quality parameters, the air in the internal air duct of the indoor temperature control component is controlled to be discharged. That is, this technical solution provides an automatic judgment and execution of air discharge, which is more intelligent.

[0071] Specifically, when air is exhausted from the internal duct of the indoor temperature control component, the first baffle 171 and the second baffle 172 are controlled to be in a purification state, and the fresh air fan 15 is controlled to rotate, so that the air in the indoor space is sequentially exhausted to the outdoor space through the heat exchanger 21 internal air inlet 13, the internal air outlet 14, and the fresh air duct of the indoor temperature control component. Ideally, during this air exhaust process, the compressor of the fresh air conditioner does not run, and the cross-flow fan 24 in the indoor temperature control module does not rotate. When the first baffle 171 and the second baffle 172 are in the purification state and the control command is the start command, after the first baffle 171 and the second baffle 172 are in the purification state for a first preset time, the first baffle 171 and the second baffle 172 are switched to the fresh air state. The aforementioned first preset time should generally not exceed 2 minutes to ensure that the user's temperature adjustment needs can be met in a timely manner. At this time, the compressor, cross-flow fan 24 and air guide plate 231 are preferably all in a stopped or closed state, while the air inlet baffle is in an open state; and / or, when the first baffle 171 When the second baffle 172 is in the purification state and the control command is the shutdown command, after the first baffle 171 and the second baffle 172 are in the purification state for a second preset time, the first baffle 171 and the second baffle 172 are controlled to switch to the fresh air state. The aforementioned second preset time can be reasonably selected according to the drying effect, and it can generally be about 3 minutes. It is understood that at this time, the compressor, cross-flow fan 24 and air guide plate 231 are all in the stopped or closed state due to the shutdown command, while the air inlet baffle will be closed after the aforementioned second preset time.

[0072] When the first baffle 171 and the second baffle 172 are in purification mode, the higher the real-time air quality parameter, the higher the rotation speed of the fresh air fan 15, and the longer the running time of the fresh air fan 15. In this technical solution, the higher the real-time air quality parameter, the higher the rotation speed of the fresh air fan 15 and the longer the running time, which can fully exhaust the low-quality indoor air while minimizing the user's waiting time. The aforementioned air quality parameter can specifically be the concentration of TVOC.

[0073] The following combination Figures 2 to 5 The technical solution of the present invention will be further described below.

[0074] Figure 3The fresh air conditioner shown is in fresh air intake mode, that is, the first baffle 171 and the second baffle 172 are in fresh air state at this time. In this mode, baffle 1 (that is, the second baffle 172 mentioned above, the same below) is rotated to state 1 (that is, the fresh air state mentioned above, the same below) driven by the motor, opening the fresh air outlet (that is, the fresh air supply outlet 12 mentioned above, the same below) and closing the internal airflow inlet (that is, the internal air inlet 13 mentioned above, the same below); baffle 2 (that is, the first baffle 171 mentioned above, the same below) is moved to state 1 by the motor and rack, opening the fresh air inlet (that is, the fresh air inlet 11 mentioned above, the same below) and closing the internal airflow outlet (that is, the internal air outlet 14 mentioned above, the same below). At this time, the fresh air duct is unobstructed, and the outdoor fresh air enters the room by passing through the fresh air duct, the adapter (the part that connects the fresh air duct and the fresh air housing 161), the fresh air inlet, the HEPA filter (also known as the air purification component 162 mentioned above, the same below), the centrifugal fan (also known as the fresh air fan 15, the same below) and the fresh air outlet.

[0075] Figure 2 The fresh air conditioner shown is in internal purification mode, meaning that the first baffle 171 and the second baffle 172 are in purification mode. In this mode, baffle 1 rotates to state 2 (the purification state mentioned above) driven by the motor, closing the fresh air outlet and opening the internal airflow inlet; baffle 2 moves to state 2 driven by the motor and rack, closing the fresh air inlet and opening the internal airflow outlet. At this time, the internal airflow channel is unobstructed, and bacteria, moisture, odors, etc., inside the unit pass through the internal airflow inlet, centrifugal fan, internal airflow outlet, adapter, and fresh air duct in sequence before being discharged outdoors. This channel prevents bacteria and moisture from passing through the HEPA filter and being discharged outdoors. Moisture would wet the HEPA filter and reduce its filtration efficiency, while bacteria would multiply on the damp HEPA filter and be blown into the room along with the fresh air, affecting the user's health. Using this airflow channel can avoid the above problems, reduce the wear and tear on the HEPA filter, and effectively improve the service life of the HEPA filter.

[0076] Figure 4The diagram shows the odor removal control flowchart. Upon startup, the sensor accurately detects the TVOC (Total Volatile Organic Compounds) concentration P (mg / m3). When P < 0.5, no discomfort will occur, and the user will not be prompted to activate the odor removal program; otherwise, a reminder will be displayed on the screen. If the user selects to execute the odor removal program, baffles 1 and 2 switch to state 2. When 0.5 ≤ P < 3, the centrifugal fan operates at low speed to extract odors from the machine, with a running time T = 30 + 9P(s); when 3 ≤ P < 10, the centrifugal fan operates at medium speed to extract odors from the machine, with a running time T = 30 + 9P(s); when 10 ≤ P, the centrifugal fan operates at high speed to extract odors from the machine, with a running time of 120 seconds. After the program finishes execution, baffles 1 and 2 switch back to state 1, and the air conditioner operates normally.

[0077] Figure 5 This is a flowchart of the condensate removal control process. When the user turns off the unit in cooling mode, baffles 1 and 2 switch to state 2, the air guide plate closes, and the drying function is activated to dry any remaining moisture on the evaporator. The water vapor is then discharged through the internal exhaust channel. After dehumidification is complete, baffles 1 and 2 switch back to state 1, and the air conditioner shuts off normally.

[0078] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. An indoor unit for a fresh air conditioning system, characterized in that, include: The fresh air component and the indoor temperature control component are provided. The fresh air component has a fresh air inlet (11), a fresh air outlet (12), an internal air inlet (13), and an internal air outlet (14) that can be controlled to open and close. The internal air inlet (13) is connected to the internal air duct of the indoor temperature control component. The internal air outlet (14) is connected to the outdoor space in a controllable manner. When it is necessary to exhaust the air in the indoor temperature control component, the fresh air fan (15) of the fresh air component can drive the air in the indoor temperature control component to be exhausted to the outdoor space through the internal air inlet (13) and the internal air outlet (14) in sequence. The indoor temperature control component has a heat exchanger (21) inside. The heat exchanger (21) is located in the internal air duct, and the internal air inlet (13) is located on the air outlet side of the heat exchanger (21). The fresh air component has an air purification component (162). When exhausting low-quality air from inside the unit, the low-quality air inside the unit does not pass through the air purification component (162).

2. The indoor unit of the fresh air air conditioner according to claim 1, characterized in that, The indoor temperature control component has an indoor return air inlet on the air inlet side of the heat exchanger (21) and an indoor air outlet (23) on the air outlet side of the heat exchanger (21), wherein the indoor air outlet (23) is provided with an air guide plate (231) and / or the indoor return air inlet is provided with an air inlet baffle.

3. The indoor unit of the fresh air air conditioner according to claim 2, characterized in that, The fresh air component includes a fresh air housing (161), which has a fresh air duct inside. The fresh air fan (15) is disposed in the fresh air duct, and the air purification component (162) is disposed in the fresh air duct. The air purification component (162) is disposed between the fresh air inlet (11) and the fresh air fan (15).

4. The indoor unit of the fresh air air conditioner according to claim 3, characterized in that, The fresh air inlet (11), fresh air outlet (12), internal air inlet (13), and internal air outlet (14) are all constructed on the fresh air housing (161). The fresh air inlet (11) and internal air outlet (14) are arranged adjacent to each other, and the fresh air outlet (12) is arranged adjacent to the internal air inlet (13). The fresh air component also includes a first baffle (171) and a second baffle (172). The first baffle (171) and the second baffle (172) have a purification function. The purification state and fresh air state, wherein when the first baffle (171) and the second baffle (172) are in the purification state, the first baffle (171) cuts off the fresh air inlet (11) and the second baffle (172) cuts off the fresh air outlet (12), and when the first baffle (171) and the second baffle (172) are in the fresh air state, the first baffle (171) cuts off the internal air outlet (14) and the second baffle (172) cuts off the internal air inlet (13).

5. A fresh air air conditioner, characterized in that, Including the indoor unit of the fresh air air conditioner as described in claim 4.

6. A control method for a fresh air air conditioner as described in claim 5, characterized in that, Includes the following steps: Obtain user control commands for the fresh air conditioner; When the control command is a shutdown command, the first baffle (171) and the second baffle (172) are controlled to be in a purification state, and the fresh air fan (15) is controlled to rotate so that the air in the indoor space is discharged to the outdoor space through the heat exchanger (21), the indoor air inlet (13), and the indoor air outlet (14) of the indoor temperature regulating component.

7. The control method for a fresh air air conditioner according to claim 6, characterized in that, When the indoor air supply vent (23) of the indoor temperature control component is provided with an air guide plate (231) and the indoor return air vent is provided with an air inlet baffle, when the control command is a shutdown command, the air guide plate (231) is also controlled to close the indoor air supply vent (23) and the air inlet baffle is controlled to open.

8. The control method for a fresh air air conditioner according to claim 6, characterized in that, When the control command is a power-on command, the real-time air quality parameters in the internal air duct of the indoor temperature control component are acquired. When the acquired real-time air quality parameters are not lower than the preset air quality parameters, a purification prompt command is fed back, allowing the user to choose whether to exhaust the air in the internal air duct of the indoor temperature control component; or... When the control command is a power-on command, the real-time air quality parameters in the internal air duct of the indoor temperature control component are obtained. When the real-time air quality parameters are not lower than the preset air quality parameters, the air in the internal air duct of the indoor temperature control component is controlled to be discharged.

9. The control method for a fresh air air conditioner according to claim 8, characterized in that, When the air in the internal air duct of the indoor temperature control component is discharged, the first baffle (171) and the second baffle (172) are controlled to be in a purification state, and the fresh air fan (15) is controlled to rotate so that the air in the indoor space is discharged to the outdoor space through the heat exchanger (21) of the indoor temperature control component, the air inlet (13) of the machine, and the air outlet (14) of the machine.

10. The control method for a fresh air air conditioner according to claim 9, characterized in that, When the first baffle (171) and the second baffle (172) are in the purification state, the higher the real-time air quality parameter, the higher the speed of the fresh air fan (15) and the longer the running time of the fresh air fan (15).

11. The control method for a fresh air air conditioner according to claim 10, characterized in that, When the first baffle (171) and the second baffle (172) are in the purification state and the control command is the power-on command, after the first baffle (171) and the second baffle (172) are in the purification state for a first preset time, the first baffle (171) and the second baffle (172) are controlled to switch to the fresh air state; and / or, when the first baffle (171) and the second baffle (172) are in the purification state and the control command is the power-off command, after the first baffle (171) and the second baffle (172) are in the purification state for a second preset time, the first baffle (171) and the second baffle (172) are controlled to switch to the fresh air state.

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