Fresh air air conditioner and its control method

Abstract

This invention provides a fresh air conditioner and its control method. The fresh air conditioner includes: an indoor temperature control module; the fresh air module includes a fresh air introduction unit and an indoor exhaust unit. An exhaust fan is installed in the exhaust cavity of the indoor exhaust unit, and an exhaust pipe is connected to the exhaust outlet of the exhaust cavity. The exhaust pipe includes a first duct communicating with the outdoor space and a second duct communicating with the air inlet side of a heat exchanger. An exhaust duct baffle is also provided in the exhaust duct, having a first position and a second position, which can be driven to switch between the first and second positions. This invention can increase the return air volume of the air conditioner by controlling the position of the exhaust duct baffle, thereby increasing the temperature control efficiency of the air conditioner. Alternatively, when indoor air needs to be exhausted, it can be exhausted through the second duct while simultaneously controlling the fresh air introduction unit to introduce fresh outdoor air.

Description

Technical Field

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

[0002] Food, as an integral part of Chinese culture, occupies a significant portion of people's daily lives. Surveys show that people spend more than 1.5 hours a day in the kitchen. In summer, the kitchen becomes unbearably hot, negatively impacting the cooking experience. Therefore, more and more consumers are choosing kitchen air conditioners. However, traditional kitchen air conditioners have certain drawbacks. For example, kitchen spaces are generally small, and the combustion of natural gas produces a large amount of CO2. If consumers spend a long time in this confined environment, they may experience dizziness, nausea, and other physical discomfort. Furthermore, the numerous heat sources in the kitchen pose a significant challenge to the cooling capacity of the air conditioner.

[0003] In order to overcome the above-mentioned shortcomings to some extent, a fresh air air conditioner has been disclosed in the prior art. However, since there are many and concentrated heat sources in the kitchen environment, it is urgent to solve the problem of how to improve the cooling capacity and cooling efficiency of the kitchen fresh air air conditioner while introducing fresh air and expelling stale air. Summary of the Invention

[0004] Therefore, the present invention provides a fresh air conditioner and its control method, which can solve the technical problem of low cooling capacity and cooling efficiency of fresh air conditioners in the prior art.

[0005] To address the above problems, the present invention provides a fresh air air conditioner, comprising:

[0006] An indoor temperature control module, wherein the indoor temperature control module has a heat exchanger;

[0007] The fresh air module includes a fresh air introduction unit and an indoor exhaust unit. The indoor exhaust unit includes an exhaust chamber with an exhaust fan inside. The exhaust chamber has an exhaust outlet and an exhaust inlet communicating with the indoor space. An exhaust pipe is connected to the exhaust outlet. The exhaust pipe includes a first duct communicating with the outdoor space and a second duct communicating with the air inlet side of the heat exchanger. An exhaust duct baffle is also provided inside the exhaust duct. The exhaust duct baffle has a first position that blocks the first duct and allows passage through the second duct, and a second position that blocks the second duct and allows passage through the first duct. The exhaust duct baffle can be driven to switch between the first position and the second position.

[0008] In some implementations...

[0009] The fresh air introduction unit includes a fresh air cavity, which has a fresh air outlet communicating with the indoor space and a fresh air inlet communicating with the outdoor space. The fresh air air conditioner also includes an interface pipe, which has a first partition inside its cavity. The first partition divides the cavity into a first air duct cavity communicating with the fresh air inlet and a second air duct cavity communicating with the airflow outlet of the first air duct.

[0010] In some embodiments, the fresh air air conditioner further includes:

[0011] An internal and external connecting main pipe is provided with a second partition in the pipe cavity, which divides the pipe cavity into a third air duct cavity and a fourth air duct cavity. The third air duct cavity is connected to the first air duct cavity, and the fourth air duct cavity is connected to the second air duct cavity.

[0012] In some implementations...

[0013] The first partition is provided with a fresh air duct baffle at one end near the internal and external connecting main pipe. The fresh air duct baffle has a third position that blocks the fresh air inlet and passes through the airflow outlet of the first duct, a fourth position that blocks the airflow outlet of the first duct and passes through the fresh air inlet, and an airflow distribution position that simultaneously passes through the fresh air inlet and the airflow outlet of the first duct.

[0014] In some implementations...

[0015] The first partition is provided with a fresh air duct guide plate at the end away from the internal and external connecting main pipe. The fresh air duct guide plate has a separation position that is embedded in the first partition and a guiding and cleaning position that is located in the first air duct cavity.

[0016] In some implementations...

[0017] The first partition has a through hole, and the fresh air duct guide plate is embedded in the through hole.

[0018] In some implementations...

[0019] The through hole and the fresh air duct guide plate are mutually matched semi-circular; and / or, the fresh air duct guide plate is pivotally connected to the first partition.

[0020] In some implementations...

[0021] The exhaust duct baffle, fresh air duct baffle, and fresh air duct guide plate are each equipped with a rotary drive motor.

[0022] In some implementations...

[0023] The first end of the first partition and the second end of the second partition are spaced apart to form a gap area, and the fresh air duct baffle is swayably connected to the gap area.

[0024] The present invention also provides a control method for a fresh air conditioner as described above, comprising the following steps:

[0025] When the fresh air conditioner is turned on, it acquires the real-time temperature, real-time humidity and real-time CO2 concentration of the indoor space;

[0026] The obtained real-time temperature, real-time humidity, and real-time CO2 concentration are compared with the corresponding real-time outdoor values ​​in the outdoor space.

[0027] Based on the relationship between the real-time temperature, real-time humidity, and real-time CO2 concentration and their corresponding outdoor real-time values, the system controls whether the fresh air intake unit and the indoor exhaust unit operate, and controls the switching of the position of the exhaust duct baffle.

[0028] In some implementations, controlling the operation of the fresh air intake unit and the indoor exhaust unit based on the relationship between the real-time temperature, real-time humidity, and real-time CO2 concentration and their respective preset values, and controlling the switching position of the exhaust duct baffle, includes:

[0029] When any of the real-time temperature, real-time humidity, and real-time CO2 concentration exceeds its corresponding preset value, the indoor exhaust unit and the fresh air intake unit are both controlled to operate, and the exhaust duct baffle is controlled to be in the second position, so that the first duct is open and the second duct is blocked; or,

[0030] When any of the real-time temperature, real-time humidity, and real-time CO2 concentration does not exceed its corresponding preset value, the indoor exhaust unit is controlled to operate and the fresh air introduction unit is not operated. The exhaust duct baffle is controlled to be in the first position so that the first duct is blocked and the second duct is open.

[0031] In some implementations...

[0032] When the indoor exhaust unit is running, the fresh air intake unit is not running, and the exhaust duct baffle is controlled to be in the first position, when the real-time temperature is lower than the set suitable human body temperature, the exhaust duct baffle is controlled to be in the second position, and the indoor exhaust unit is controlled to stop running.

[0033] In some embodiments, during the start-up and operation of the fresh air conditioner, the control method further includes:

[0034] Detects and determines whether a user is using an open flame;

[0035] If it is detected that the user is not using an open flame, then it is determined whether either the real-time temperature or the real-time CO2 concentration of the indoor space exceeds the corresponding set human comfort value.

[0036] When the real-time temperature of the indoor space exceeds the set comfortable temperature for the human body, the indoor exhaust unit is controlled to operate, the fresh air intake unit is controlled to not operate, and the exhaust duct baffle is controlled to be in the first position, so that the first duct is blocked and the second duct is unobstructed; or,

[0037] When the real-time CO2 concentration in the indoor space exceeds the set human-indicating CO2 concentration, the fresh air intake unit is activated while the indoor exhaust unit is deactivated, allowing fresh air from the outdoor space to enter the indoor space through the fresh air inlet; or,

[0038] When the real-time temperature of the indoor space exceeds the set suitable temperature for the human body and the real-time CO2 concentration of the indoor space exceeds the set indicated CO2 concentration for the human body, the indoor exhaust unit and the fresh air introduction unit are both controlled to operate, and the exhaust duct baffle is controlled to be in the first position so that the first duct is blocked and the second duct is open.

[0039] In some implementations...

[0040] If the user is detected using an open flame, the real-time oil fume content in the indoor space will be further detected.

[0041] When the detected real-time oil fume content exceeds a preset threshold, the indoor exhaust unit is controlled to operate, the fresh air intake unit is controlled to stop operating, and the exhaust duct baffle is controlled to be in the second position, so that the first duct is unobstructed and the second duct is blocked; or,

[0042] When the detected real-time oil fume content does not exceed the preset threshold, the indoor exhaust unit and the fresh air introduction unit are both controlled to operate, and the exhaust duct baffle is controlled to be in the second position so that the first duct is open and the second duct is blocked.

[0043] In some embodiments, when the fresh air air conditioner includes a fresh air duct guide plate and a fresh air duct baffle, the control method further includes:

[0044] When the fresh air air conditioner receives a shutdown command, it controls the indoor exhaust unit to operate and the fresh air introduction unit to not operate, and controls the exhaust duct baffle to be in the second position, the fresh air duct baffle to be in the fourth position, and the fresh air duct guide plate to be in the air guiding and cleaning position.

[0045] The present invention provides a fresh air conditioner and its control method, which have the following beneficial effects:

[0046] By connecting an exhaust duct with a first air duct and a second air duct at the exhaust outlet of the exhaust cavity, wherein the first air duct is connected to the air inlet side of the heat exchanger and the second air duct is connected to the outdoor space, the return air volume of the air conditioner can be increased by controlling the position of the exhaust air duct baffle, thereby increasing the temperature regulation efficiency of the air conditioner. For example, in cooling mode, it can increase the cooling capacity and cooling efficiency of the air conditioner, or when indoor air needs to be exhausted (e.g., when the air quality in the indoor space is poor), the second air duct is used to exhaust the air while the fresh air introduction unit is controlled to introduce fresh outdoor air.

[0047] By setting a first baffle inside the interface pipe, the pipe cavity is divided into two independent first air duct cavity and second air duct cavity. This makes the structural design of the air conditioner simpler and more compact, simplifies the pipe layout, and saves the space required for pipe laying.

[0048] The cavity of the internal and external connecting main pipe is divided into a relatively independent third air duct cavity and a fourth air duct cavity by the second partition. This can further simplify the structure of the air conditioner, make the pipe connection simpler, improve assembly efficiency, and save the space required for pipe laying.

[0049] When the fresh air duct guide plate is in the separated position, it is flush with the extended plane of the first partition, thus objectively serving as part of the first partition to isolate the fresh air from the exhaust air. When the fresh air duct guide plate is in the air-guiding and cleaning position, the indoor airflow discharged from the exhaust cavity can enter the first duct cavity through the first duct and under the guidance of the fresh air duct guide plate, thereby achieving reverse blowing of the fresh air introduction path. This process can achieve self-cleaning of the fresh air introduction pipeline. Attached Figure Description

[0050] 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.

[0051] 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.

[0052] Figure 1This is a schematic diagram of the internal structure of a fresh air conditioner according to an embodiment of the present invention (the air conditioner panel is omitted);

[0053] Figure 2 for Figure 1 The relative positions of the fresh air module and the heat exchanger are shown in the figure, with the exhaust duct baffle in the first position.

[0054] Figure 3 for Figure 1 The relative positions of the fresh air module and the heat exchanger are shown in the figure, with the exhaust duct baffle in the second position.

[0055] Figure 4 for Figure 1 A structural diagram of the fresh air module from another perspective;

[0056] Figure 5 for Figure 4 A three-dimensional structural diagram of the fresh air module in the system;

[0057] Figure 6 for Figure 4 A three-dimensional structural diagram (including the interior) of one side of the fresh air cavity;

[0058] Figure 7 This is a schematic diagram of the control logic of the fresh air conditioner of the present invention when it is first turned on;

[0059] Figure 8 This is a schematic diagram of the control logic during the operation of the fresh air air conditioner of the present invention.

[0060] The reference numerals in the attached figures are as follows:

[0061] 1. Indoor temperature control module; 11. Heat exchanger; 12. Indoor cross-flow fan; 21. Exhaust chamber; 211. Exhaust outlet; 212. Exhaust inlet; 213. First air duct; 214. Second air duct; 215. Exhaust duct baffle; 22. Exhaust fan; 31. Fresh air chamber;

[0062] 311. Fresh air outlet; 32. Filter assembly; 33. Fresh air fan; 4. Interface pipe;

[0063] 41. First partition; 51. Fresh air duct baffle; 511. Fresh air duct baffle drive motor; 52. Fresh air duct guide plate; 521. Fresh air duct guide plate drive motor. Detailed Implementation

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] See also Figure 1 and Figure 8 As shown, according to an embodiment of the present invention, a fresh air air conditioner is provided, comprising:

[0072] The indoor temperature control module 1 includes a heat exchanger 11, an indoor cross-flow fan 12, and an indoor outer shell (not labeled in the figure) surrounding the heat exchanger 11 and the indoor cross-flow fan 12. The indoor outer shell has an indoor air supply vent (not shown in the figure, not labeled) and an indoor air return vent (not shown in the figure, not labeled). In the normal operation mode of the fresh air air conditioner, it regulates the temperature of the indoor space. Specifically for the kitchen (that is, the indoor space is the kitchen), the normal operation mode is the cooling mode. At this time, the aforementioned heat exchanger 11 is specifically an evaporator.

[0073] The fresh air module (not labeled in the figure) includes a fresh air introduction unit (not labeled in the figure) and an indoor exhaust unit (not labeled in the figure). The indoor exhaust unit includes an exhaust chamber 21, within which an exhaust fan 22 is installed. Specifically, the exhaust fan 22 can be a centrifugal fan and is driven by an exhaust motor. The exhaust chamber 21 has an exhaust outlet 211 and an exhaust inlet 212 communicating with the indoor space. An exhaust duct (not labeled in the figure) is connected to the exhaust outlet 211. The exhaust duct includes a first duct 213 communicating with the outdoor space (i.e., the external environment) and a second duct 214 communicating with the air inlet side of the heat exchanger 11. An exhaust duct baffle 215 is also provided inside the exhaust duct. The exhaust duct baffle 215 has a first position that blocks the first duct 213 and passes through the second duct 214 (see [reference]). Figure 2 As shown), it also has a second position that blocks the second air duct 214 and connects to the first air duct 213 (see...). Figure 3 As shown, the exhaust duct baffle 215 can be driven to switch between the first position and the second position, that is, the exhaust duct baffle 215 is either in the first position or in the second position, and is not in the middle position between the two positions.

[0074] In this technical solution, an exhaust pipe with a first air duct 213 and a second air duct 214 is connected to the exhaust outlet 211 of the exhaust cavity 21. The first air duct 213 is connected to the air inlet side of the heat exchanger 11, and the second air duct 214 is connected to the outdoor space. In this way, the return air volume of the air conditioner can be increased by controlling the position of the exhaust air duct baffle 215, thereby increasing the temperature regulation efficiency of the air conditioner. For example, in the cooling mode, the air conditioning capacity and cooling efficiency can be increased. Or, when indoor air needs to be exhausted (for example, when the air quality in the indoor space is poor), the air is exhausted through the second air duct 214 while the fresh air introduction unit is controlled to introduce fresh air from outside.

[0075] In some implementations...

[0076] The fresh air introduction unit includes a fresh air cavity 31, in which a fresh air fan is installed. The fresh air cavity 31 has a fresh air outlet 311 communicating with the indoor space and a fresh air inlet (not labeled in the figure) communicating with the outdoor space. A filter assembly 32 (specifically, for example, a HEPA filter) is installed on the fresh air inlet side. The fresh air air conditioner also includes an interface pipe 4. The interface pipe 4 has a first partition 41 in its cavity. The first partition 41 divides the cavity into a first air duct cavity (not labeled in the figure) communicating with the fresh air inlet and a second air duct cavity (not labeled in the figure) communicating with the airflow outlet of the first air duct 213.

[0077] In this technical solution, by setting a first partition 41 inside the interface pipe 4, the pipe cavity is divided into two independent first air duct cavity and second air duct cavity. This makes the structural design of the air conditioner simpler and more compact, simplifies the pipe layout, and saves the space required for pipe laying.

[0078] In some embodiments, the fresh air air conditioner further includes: an internal and external connecting main pipe (not shown in the figure), and a second partition (not shown in the figure) is disposed within the cavity of the internal and external connecting main pipe. The second partition divides the cavity into a third air duct cavity and a fourth air duct cavity, wherein the third air duct cavity is connected to the first air duct cavity, and the fourth air duct cavity is connected to the second air duct cavity. It is understood that the second partition is disposed opposite to the first partition 41 at least at its end facing the interface pipe 4, so that the first and second air duct cavities within the interface pipe 4 can more smoothly connect with the third and fourth air duct cavities, ensuring smooth airflow within their respective air duct cavities and reducing wind resistance.

[0079] In this technical solution, the cavity of the internal and external connecting main pipe is divided into a relatively independent third air duct cavity and a fourth air duct cavity by a second partition. This can further simplify the structure of the air conditioner, make the pipe connection simpler, improve assembly efficiency, and save the space required for pipe laying.

[0080] In a preferred embodiment, see details below. Figures 1 to 4 As shown, the first partition 41 is provided with a fresh air duct baffle 51 at one end near the internal and external connecting main pipe. The fresh air duct baffle 51 has a third position that blocks the fresh air inlet and passes through the airflow outlet of the first air duct 213, a fourth position that blocks the airflow outlet of the first air duct 213 and passes through the fresh air inlet, and an airflow distribution position that simultaneously passes through the fresh air inlet and the airflow outlet of the first air duct 213.

[0081] In this technical solution, the fresh air duct baffle 51 can block the airflow inlet and the airflow outlet of the first air duct 213, i.e., adjust the aforementioned third and fourth positions. Simultaneously, the fresh air duct baffle 51 also has an airflow distribution position; when the fresh air duct baffle 51 is in this airflow distribution position, the ratio of exhaust volume to fresh air volume can be adjusted. It is understood that when the fresh air duct baffle 51 is centered, i.e., parallel to the extension direction of the first partition 5, the flow areas of the first and second air duct cavities on both sides are exactly equal.

[0082] See details Figure 6As shown, in some embodiments, the end of the first partition 41 away from the main internal and external connecting pipe is provided with a fresh air duct guide plate 52. The fresh air duct guide plate 52 has a separation position that is embedded in the first partition 41 and a guide air cleaning position in the first air duct cavity. When the fresh air duct guide plate 52 is in the separation position, the fresh air duct guide plate 52 is flush with the plate extension plane of the first partition 41, so that the fresh air duct guide plate 52 objectively serves as part of the first partition 41 to isolate the fresh air and exhaust air. When the fresh air duct guide plate 52 is in the guide air cleaning position, the indoor airflow discharged from the exhaust cavity 21 can enter the first air duct cavity through the first air duct 213 and under the guidance of the fresh air duct guide plate 52, thereby achieving reverse blowing of the fresh air introduction path. This process can achieve self-cleaning of the fresh air introduction pipe. Thus, it is clear that in this technical solution, the fresh air duct guide plate 52 should be located upstream of the indoor exhaust airflow direction of the aforementioned fresh air duct baffle 51 or downstream of the fresh air intake airflow direction. When the fresh air duct guide plate 52 is in the airflow cleaning position, the corresponding fresh air duct baffle 51 is controlled to be in the fourth position, so that the exhaust air is cut off on the downstream side and the fresh air duct is connected.

[0083] In some embodiments, the first partition 41 has a through hole (not indicated in the figure), and the fresh air duct guide plate 52 is embedded in the through hole.

[0084] In this technical solution, when the fresh air duct guide plate 52 is in the separated position, the fresh air duct guide plate 52 is embedded in the through hole, which can reduce the obstruction of the airflow passing through it when the fresh air duct guide plate 52 is in the separated position, that is, it can reduce wind resistance.

[0085] In one specific embodiment, the through hole and the fresh air duct guide plate 52 are mutually matched semicircles. When the first partition 41 is on the center line of the cavity of the interface pipe 4, the semicircular fresh air duct guide plate 52 can have a large deflection and guiding angle. Optimally, it can completely close the fresh air outlet of the fresh air cavity 31, thereby guiding the exhaust airflow to the section of the fresh air duct connecting to the external space to the maximum extent, ensuring a self-cleaning effect. It is understood that when the fresh air duct guide plate 52 is in the air-guiding cleaning position, the through hole is open and located on the side of the fresh air duct guide plate 52 facing the outdoor space. The through hole and the fresh air duct guide plate 52 in this invention are matched in shape, ensuring their separation effect when the fresh air duct guide plate 52 is in the separated position.

[0086] The fresh air duct guide plate 52 is pivotally connected to the first partition plate 41, and the position of the fresh air duct guide plate 52 is switched by swinging. The structure is compact and the design is reasonable.

[0087] In terms of specific driving, the exhaust duct baffle 215, the fresh air duct baffle 51, and the fresh air duct guide plate 52 are respectively equipped with rotary drive motors. For example, the exhaust duct baffle 215 is controlled by the exhaust drive motor, the fresh air duct guide plate 52 is controlled by the fresh air duct guide plate drive motor 521, and the fresh air duct baffle 51 is controlled by the fresh air duct baffle drive motor 511.

[0088] In some embodiments, the first end of the first partition 41 (i.e., the end closer to the outdoor space) and the second end of the second partition (i.e., the end closer to the indoor space) are spaced apart to form an interval region, and the fresh air duct baffle 51 is swayably connected to the interval region. When the fresh air duct baffle 51 is centered, the fresh air duct baffle 51, the first partition 41, and the second partition together form a complete seal for the exhaust airflow and the fresh airflow.

[0089] 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:

[0090] See details Figure 7 As shown, when the fresh air conditioner is turned on (that is, when the fresh air conditioner switches from the off state to the on state, that is, when the fresh air conditioner receives the start command), the real-time temperature, real-time humidity and real-time CO2 concentration of the indoor space are obtained. The aforementioned real-time temperature and real-time humidity can be obtained by temperature and humidity sensors, and the aforementioned real-time CO2 concentration is detected by CO2 sensor.

[0091] The obtained real-time temperature, real-time humidity, and real-time CO2 concentration are compared with the corresponding real-time outdoor values ​​in the outdoor space, that is, the real-time temperature is compared with the real-time outdoor temperature, the real-time humidity is compared with the real-time outdoor humidity, and the real-time CO2 concentration is compared with the real-time outdoor CO2 concentration.

[0092] Based on the relationship between the real-time temperature, real-time humidity, and real-time CO2 concentration and the corresponding real-time outdoor values, the operation of the fresh air intake unit and the indoor exhaust unit is controlled, and the position of the exhaust duct baffle 215 is switched. The operation of the aforementioned fresh air intake unit and the indoor exhaust unit is also controlled, i.e., whether the drive motor of the fresh air fan 33 in the fresh air intake unit is running and whether the drive motor of the exhaust fan 22 in the indoor exhaust unit is running. The same applies below and will not be elaborated further.

[0093] In this technical solution, when the air conditioner is turned on, the relationship between indoor and outdoor temperature, humidity and CO2 concentration is compared, and the positions of the fresh air introduction unit, indoor exhaust unit and exhaust duct baffle 215 are switched according to the relationship, so that the operation mode of the fresh air air conditioner matches the indoor state when it is turned on, thereby improving the comfort of using the air conditioner.

[0094] In some embodiments, controlling the operation of the fresh air intake unit and the indoor exhaust unit based on the relationship between the real-time temperature, real-time humidity, and real-time CO2 concentration and their respective preset values, and controlling the switching of the position of the exhaust duct baffle 215 specifically includes:

[0095] When any of the real-time temperature, real-time humidity, and real-time CO2 concentration exceeds its corresponding preset value, both the indoor exhaust unit and the fresh air intake unit are activated, and the exhaust duct baffle 215 is positioned in the second position, allowing the first duct 213 to be open and the second duct 214 to be blocked. At this time, low-quality indoor air is rapidly exhausted to the outdoor space through the first duct 213, while the fresh air intake unit introduces fresh outdoor air into the room, quickly improving the indoor air quality and temperature, and enhancing user comfort; or...

[0096] When any of the real-time temperature, real-time humidity, and real-time CO2 concentration does not exceed its corresponding preset value, the indoor exhaust unit is controlled to operate and the fresh air introduction unit is not operated. The exhaust duct baffle 215 is controlled to be in the first position so that the first duct 213 is blocked and the second duct 214 is open.

[0097] In this technical solution, when the indoor air quality and temperature are both within the preset range, the indoor exhaust unit is controlled to operate and the cooling capacity is increased by returning air through the second air duct 214, thereby improving the indoor cooling efficiency and quickly adjusting the indoor space temperature to the user's target temperature.

[0098] In a preferred embodiment, when the indoor exhaust unit is operating, the fresh air intake unit is not operating, and the exhaust duct baffle 215 is controlled to be in the first position, when the real-time temperature is lower than the set comfortable human body temperature, the exhaust duct baffle 215 is controlled to be in the second position, and the indoor exhaust unit is controlled to stop operating. Generally, the aforementioned set comfortable human body temperature is lower than the aforementioned preset temperature, which can specifically be the user's set target temperature. When the real-time indoor temperature is lower than the set comfortable human body temperature, the second air duct 214 is cut off to prevent discomfort caused by excessively low temperatures. At this time, the fresh air air conditioner can automatically adjust according to the traditional cooling mode.

[0099] See details Figure 8As shown, during the start-up and operation of the fresh air conditioner, the control method further includes:

[0100] The detection and determination of whether a user is using an open flame can be achieved, for example, by using an infrared detector to detect flames and thus determine whether the user is using an open flame.

[0101] If it is detected that the user is not using an open flame, then it is determined whether either the real-time temperature or the real-time CO2 concentration of the indoor space exceeds the corresponding set human comfort value.

[0102] When the real-time temperature of the indoor space exceeds the set comfortable temperature for the human body, the indoor exhaust unit is controlled to operate while the fresh air intake unit is not operated. Furthermore, the exhaust duct baffle 215 is controlled to be in the first position, thus blocking the first duct 213 and opening the second duct 214. This means that at this time, the return air intake of the heat exchanger 11 is increased via the second duct 214, thereby improving heat exchange efficiency and allowing the temperature to reach the user's set target value as quickly as possible; or...

[0103] When the real-time CO2 concentration in the indoor space exceeds the set human body indication CO2 concentration, the fresh air intake unit is activated while the indoor exhaust unit is deactivated. This allows fresh air from the outdoor space to enter the indoor space through the fresh air inlet. At this time, the introduction of outdoor fresh air through the fresh air intake unit increases the oxygen content in the indoor space, thereby reducing the CO2 concentration and improving user comfort; or...

[0104] When the real-time temperature of the indoor space exceeds the set suitable temperature for the human body and the real-time CO2 concentration of the indoor space exceeds the set indicated CO2 concentration for the human body, the indoor exhaust unit and the fresh air introduction unit are both controlled to operate, and the exhaust duct baffle 215 is controlled to be in the first position, so that the first duct 213 is blocked and the second duct 214 is open.

[0105] This technical solution employs both the introduction of external fresh air and rapid cooling, which balances temperature and air quality, thereby improving user comfort under these conditions.

[0106] See further Figure 8 As shown, in some implementations, if the user is detected using an open flame, the real-time oil fume content in the indoor space is further detected. Specifically, the real-time oil fume content can be detected using a PM2.5 coefficient monitoring instrument.

[0107] When the detected real-time oil fume content exceeds a preset threshold (which can be manually set), and the user's cooking method is frying or stir-frying, the indoor exhaust unit is activated while the fresh air intake unit is deactivated. The exhaust duct baffle 215 is also positioned in the second position, allowing the first duct 213 to be open and the second duct 214 to be blocked. In this state, the indoor exhaust unit expels the excessively oily air to the outside, functioning similarly to an exhaust fan. It works even better when used in conjunction with a range hood in the kitchen. Alternatively...

[0108] When the detected real-time oil fume content does not exceed the preset threshold, the user's cooking method may be steaming or boiling. In this case, the CO2 concentration increases, and the indoor exhaust unit and fresh air introduction unit are both controlled to operate. The exhaust duct baffle 215 is also controlled to be in the second position, so that the first duct 213 is open and the second duct 214 is blocked, so that external fresh air can be introduced and the indoor CO2 concentration can be reduced.

[0109] In another preferred embodiment, when the fresh air air conditioner includes a fresh air duct guide plate 52 and a fresh air duct baffle 51, the control method further includes:

[0110] When the fresh air air conditioner receives a shutdown command, it controls the indoor exhaust unit to operate and the fresh air intake unit to not operate. It also controls the exhaust duct baffle 215 to be in the second position, the fresh air duct baffle 51 to be in the fourth position, and the fresh air duct guide plate 52 to be in the air guiding and cleaning position. In this technical solution, when the user shuts down the air conditioner, the air conditioner controls the exhaust fan to run and guide the indoor air through the fresh air duct guide plate 52 into the upstream section of the corresponding fresh air duct (in terms of the fresh air flow direction, such as the aforementioned internal and external connecting main duct). Since the exhaust air flow direction is opposite to the fresh air intake flow direction, the reverse flow of indoor exhaust air can be used to self-clean the fresh air duct and prevent the fresh air duct from becoming blocked.

[0111] When the fresh air air conditioner includes a fresh air duct baffle 51 and both the fresh air inlet unit and the indoor exhaust unit are running, the deflection direction and angle of the fresh air duct baffle 51 are adjusted according to the magnitudes of ΔT and ΔCO2 concentration. The relative relationship between the magnitudes of ΔT (difference between indoor and outdoor temperatures) and ΔCO2 concentration (difference between indoor and outdoor CO2 concentrations) and the deflection direction and angle of the fresh air duct baffle 51 can be adjusted through a preset correspondence. When ΔT is the main difference between indoor and outdoor air quality indices, the larger ΔT is, the more the fresh air duct baffle 51 will deflect towards the exhaust duct (i.e., the second duct cavity mentioned above). At this time, the exhaust duct outlet area decreases and the fresh air duct inlet area increases. When ΔCO2 concentration is the main difference between indoor and outdoor air quality indices, the larger ΔCO2 concentration is, the more the fresh air duct baffle 51 will deflect towards the fresh air duct (i.e., the first duct cavity mentioned above). At this time, the fresh air duct inlet area decreases and the exhaust duct outlet area increases.

[0112] 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. A fresh air air conditioner, characterized in that, include: An indoor temperature control module (1) has a heat exchanger (11), an indoor cross-flow fan (12) and an indoor outer shell surrounding the heat exchanger (11) and the indoor cross-flow fan (12), and the indoor outer shell has an indoor return air vent. The fresh air module includes a fresh air introduction unit and an indoor exhaust unit. The indoor exhaust unit includes an exhaust cavity (21), an exhaust fan (22) is provided inside the exhaust cavity (21), the exhaust cavity (21) has an exhaust outlet (211) and an exhaust inlet (212) communicating with the indoor space, an exhaust pipe is connected to the exhaust outlet (211), the exhaust pipe includes a first duct (213) communicating with the outdoor space and a second duct (214) communicating with the air inlet side of the heat exchanger (11), and an exhaust duct baffle (215) is also provided inside the exhaust duct. 5) It has a first position that blocks the first air duct (213) and passes through the second air duct (214), and also has a second position that blocks the second air duct (214) and passes through the first air duct (213). The exhaust air duct baffle (215) can be driven to switch between the first position and the second position. When the indoor air quality and temperature are both within the preset range, the indoor exhaust unit is controlled to operate, the fresh air introduction unit is not operated, and the exhaust air duct baffle (215) is controlled to be in the first position so as to increase the cooling capacity of the fresh air air conditioner by returning air through the second air duct (214).

2. The fresh air air conditioner according to claim 1, characterized in that, The fresh air introduction unit includes a fresh air cavity (31), which has a fresh air outlet (311) connected to the indoor space and a fresh air inlet connected to the outdoor space. The fresh air air conditioner also includes an interface pipe (4), which has a first partition (41) inside its cavity. The first partition (41) divides the cavity into a first air duct cavity connected to the fresh air inlet and a second air duct cavity connected to the airflow outlet of the first air duct (213).

3. The fresh air air conditioner according to claim 2, characterized in that, The fresh air air conditioner also includes: An internal and external connecting main pipe is provided with a second partition in the pipe cavity, which divides the pipe cavity into a third air duct cavity and a fourth air duct cavity. The third air duct cavity is connected to the first air duct cavity, and the fourth air duct cavity is connected to the second air duct cavity.

4. The fresh air air conditioner according to claim 3, characterized in that, The first partition (41) is provided with a fresh air duct baffle (51) at one end near the internal and external connecting main pipe. The fresh air duct baffle (51) has a third position that blocks the fresh air inlet and passes through the airflow outlet of the first air duct (213), a fourth position that blocks the airflow outlet of the first air duct (213) and passes through the fresh air inlet, and an airflow distribution position that simultaneously passes through the fresh air inlet and the airflow outlet of the first air duct (213).

5. The fresh air air conditioner according to claim 3, characterized in that, The first partition (41) has a fresh air duct guide plate (52) at one end away from the internal and external connecting main pipe. The fresh air duct guide plate (52) has a separation position that is embedded with the first partition (41) and a guide cleaning position that is located in the first air duct cavity.

6. The fresh air air conditioner according to claim 5, characterized in that, The first partition (41) has a through hole, and the fresh air duct guide plate (52) is embedded in the through hole.

7. The fresh air air conditioner according to claim 6, characterized in that, The through hole and the fresh air duct guide plate (52) are mutually matched semi-circular; and / or, the fresh air duct guide plate (52) is pivotally connected to the first partition plate (41).

8. The fresh air air conditioner according to claim 5, characterized in that, The exhaust duct baffle (215), the fresh air duct baffle (51), and the fresh air duct guide plate (52) are each equipped with a rotary drive motor.

9. The fresh air air conditioner according to claim 4, characterized in that, The first end of the first partition (41) and the second end of the second partition are spaced apart to form an interval area, and the fresh air duct baffle (51) is swayably connected to the interval area.

10. A control method for a fresh air air conditioner as described in any one of claims 1 to 9, characterized in that, Includes the following steps: When the fresh air conditioner is turned on, it acquires the real-time temperature, real-time humidity and real-time CO2 concentration of the indoor space; The obtained real-time temperature, real-time humidity, and real-time CO2 concentration are compared with the corresponding real-time outdoor values ​​in the outdoor space. Based on the relationship between the real-time temperature, real-time humidity, and real-time CO2 concentration and the corresponding real-time outdoor values, the operation of the fresh air intake unit and the indoor exhaust unit is controlled, and the position of the exhaust duct baffle (215) is switched.

11. The control method according to claim 10, characterized in that, Based on the relationship between the real-time temperature, real-time humidity, and real-time CO2 concentration and their respective preset values, the operation of the fresh air intake unit and the indoor exhaust unit is controlled, and the position of the exhaust duct baffle (215) is controlled to be switched, including: When any of the real-time temperature, real-time humidity, and real-time CO2 concentration exceeds its corresponding preset value, the indoor exhaust unit and the fresh air intake unit are both controlled to operate, and the exhaust duct baffle (215) is controlled to be in the second position, so that the first duct (213) is open and the second duct (214) is blocked; or, When any of the real-time temperature, real-time humidity and real-time CO2 concentration does not exceed their corresponding preset values, the indoor exhaust unit is controlled to operate and the fresh air introduction unit is not operated, and the exhaust duct baffle (215) is controlled to be in the first position so that the first duct (213) is blocked and the second duct (214) is open.

12. The control method according to claim 11, characterized in that, When the indoor exhaust unit is running, the fresh air intake unit is not running, and the exhaust duct baffle (215) is controlled to be in the first position, when the real-time temperature is lower than the set suitable human body temperature, the exhaust duct baffle (215) is controlled to be in the second position, and the indoor exhaust unit is controlled to stop running.

13. The control method according to claim 10, characterized in that, During the start-up and operation of the fresh air conditioner, the control method further includes: Detects and determines whether a user is using an open flame; If it is detected that the user is not using an open flame, then it is determined whether either the real-time temperature or the real-time CO2 concentration of the indoor space exceeds the corresponding set human comfort value. When the real-time temperature of the indoor space exceeds the set suitable temperature for the human body, the indoor exhaust unit is controlled to operate and the fresh air introduction unit is not operated, and the exhaust duct baffle (215) is controlled to be in the first position, so that the first duct (213) is blocked and the second duct (214) is open; or, When the real-time CO2 concentration in the indoor space exceeds the set human-indicating CO2 concentration, the fresh air intake unit is activated while the indoor exhaust unit is deactivated, allowing fresh air from the outdoor space to enter the indoor space through the fresh air inlet; or, When the real-time temperature of the indoor space exceeds the set suitable temperature for the human body and the real-time CO2 concentration of the indoor space exceeds the set indicated CO2 concentration for the human body, the indoor exhaust unit and the fresh air introduction unit are both controlled to operate, and the exhaust duct baffle (215) is controlled to be in the first position so that the first duct (213) is blocked and the second duct (214) is open.

14. The control method according to claim 13, characterized in that, If the user is detected using an open flame, the real-time oil fume content in the indoor space will be further detected. When the detected real-time oil fume content exceeds a preset threshold, the indoor exhaust unit is controlled to operate, the fresh air introduction unit is not operated, and the exhaust duct baffle (215) is controlled to be in the second position, so that the first duct (213) is open and the second duct (214) is blocked; or, When the detected real-time oil fume content does not exceed the preset threshold, the indoor exhaust unit and the fresh air introduction unit are both controlled to operate, and the exhaust duct baffle (215) is controlled to be in the second position so that the first duct (213) is open and the second duct (214) is blocked.

15. The control method according to claim 10, characterized in that, When the fresh air air conditioner includes a fresh air duct guide plate (52) and a fresh air duct baffle (51), the control method further includes: When the fresh air air conditioner receives a shutdown command, it controls the indoor exhaust unit to operate and the fresh air inlet unit to not operate, and controls the exhaust duct baffle (215) to be in the second position, the fresh air duct baffle (51) to be in the fourth position, and the fresh air duct guide plate (52) to be in the air guiding and cleaning position.

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