A control method for fresh air conditioning

Abstract

This invention provides a control method for a fresh air conditioning system, belonging to the field of fresh air conditioning technology. It includes an indoor unit main module and a fresh air module. The indoor unit main module has a main air supply path, and the fresh air module has a fresh air inlet, a fresh air outlet, a return air inlet, a return air outlet, a fresh air flow path, a return air flow path, a first bypass connecting the fresh air flow path and the main air supply path, and a first position detection module. When the fresh air conditioning system mixes air, the first bypass reduces the temperature difference between the heat exchange air from the indoor unit main module and the fresh air from the fresh air module. Simultaneously, the first position detection module detects the position information of people in the room, and based on the position, selects to open the fresh air outlet and / or the air supply outlet and / or controls the air guide angle of the first air guide plate and / or the air guide angle of the second air guide plate, thereby preventing the mixed air from directly blowing onto the user's body surface and causing discomfort.

Description

Technical Field

[0001] This invention relates to the field of fresh air conditioning technology, and in particular to a control method for a fresh air conditioning system. Background Technology

[0002] To meet diverse needs, people are installing more and more electrical appliances, which not only take up a lot of air but are also very inconvenient to use. It is foreseeable that in the future, single "air purification" will shift to comprehensive "air management," and the final form will be a single device that solves all air problems.

[0003] Therefore, fresh air conditioners were born. However, currently available fresh air conditioners have an excessively large temperature difference between the fresh air and the heat exchange air when mixing the air. This large temperature difference in the mixed air blown directly onto the user's body can cause discomfort. Summary of the Invention

[0004] To overcome the problem in related technologies where the mixed airflow of a fresh air conditioner blows directly onto the user's body surface during mixed air output, causing discomfort to the user, this invention proposes a control method for a fresh air conditioner. The fresh air conditioner includes an indoor unit and an outdoor unit. The indoor unit is a split type, which includes an indoor unit main module and a fresh air module, and the indoor unit main module and the fresh air module are arranged adjacent to each other.

[0005] The indoor unit main module is provided with an air inlet and an air outlet, as well as a main air supply path connecting the air inlet and the air outlet, and a first filter device, an indoor heat exchanger and a blower arranged sequentially along the airflow direction of the main air supply path. The indoor heat exchanger is in fluid communication with the compressor and outdoor heat exchanger of the outdoor unit in the refrigeration circuit, and both the air inlet and the air outlet are in fluid communication with the indoor environment.

[0006] The fresh air module is equipped with a fresh air inlet, a fresh air outlet, a return air inlet, a return air outlet, and a fresh air flow path that fluidly connects the fresh air inlet and fresh air outlet, and a return air flow path that fluidly connects the return air inlet and return air outlet.

[0007] A fresh air fan is installed on the fresh air flow path, and a return air fan is installed on the return air flow path. A heat exchange device for heat exchange between fresh air and return air is coupled on the return air flow path and the fresh air flow path. The heat exchange device forms a first channel and a second channel. The inlet and outlet of the first channel are connected to the return air flow path, and the inlet and outlet of the second channel are connected to the fresh air flow path. A second filter device is installed at the inlet of the second channel.

[0008] The fresh air outlet is equipped with a fresh air valve, the air supply outlet is equipped with an air supply valve, the fresh air outlet is equipped with a first air guide plate, and the air supply outlet is equipped with a second air guide plate.

[0009] The fresh air inlet and return air exhaust outlet are both in fluid communication with the external environment, while the fresh air outlet and return air inlet are both in fluid communication with the indoor environment.

[0010] A first bypass is connected between the main air supply line and the fresh air flow line. One end of the first bypass is connected between the air supply valve of the main air supply line and the indoor heat exchanger, and the other end is connected between the fresh air valve of the fresh air flow line and the outlet of the second channel. A first control valve is provided on the first bypass.

[0011] The fresh air conditioner features a hybrid mode that allows the fresh air module and the indoor unit main module to work together to regulate indoor air quality;

[0012] The fresh air conditioner is equipped with a first position detection module, which is used to detect the position information of people indoors.

[0013] Control methods include:

[0014] In the mixed air supply mode, the supply fan, fresh air fan and the first control valve on the first bypass are turned on, and the location information of the people in the room is detected;

[0015] Based on the location information of people indoors, select to open the fresh air valve and / or the supply air valve and / or control the air guiding angle of the first air guide plate and / or control the air guiding angle of the second air guide plate.

[0016] In the above technical solution, the method of selecting to open the fresh air valve and / or the supply air valve and / or controlling the air guiding angle of the first air guide plate and / or controlling the air guiding angle of the second air guide plate based on the indoor personnel location information includes:

[0017] If personnel location information is detected in the air supply direction of the fresh air outlet, the fresh air outlet will be closed and the air supply outlet will be opened.

[0018] If personnel location information is detected in the air supply direction of the air outlet, the air outlet will be closed and the fresh air outlet will be opened.

[0019] If personnel location information is detected in both the fresh air outlet and the air supply outlet in the air supply direction, both the fresh air outlet and the air supply outlet will be opened. At the same time, the air guide angles of the first and second air guide plates will be changed to alter the air supply direction of the fresh air outlet and the air supply outlet, so that the fresh air outlet and the air supply outlet avoid the location of the indoor personnel in the air supply direction.

[0020] In the above technical solution, both the first air guide plate and the second air guide plate have a first adjustment method of vertical swing adjustment and a second adjustment method of horizontal swing adjustment. The fresh air air conditioner has a wind speed detection module for detecting the air outlet speed at the fresh air outlet and the air supply outlet.

[0021] When the air supply direction of both the fresh air outlet and the air supply vent contains personnel location information, the methods for controlling the air guiding angle of the first and second air guide plates include:

[0022] Obtain the air velocity v1 at the fresh air outlet and the air velocity v2 at the air supply outlet;

[0023] Calculate the speed difference ΔV between the two and compare it with the preset speed difference ΔV.

[0024] Based on the comparison results, the first and second air guide plates are adjusted according to the first adjustment method and / or the second adjustment method.

[0025] In the above technical solution, the method for controlling the first and second air guide plates to adjust according to the first adjustment method or the second adjustment method based on the comparison results includes:

[0026] If △V≤△V, the first and second air guide plates are adjusted according to the first adjustment method.

[0027] If △V > △Vset, the first and second air guide plates are adjusted according to the first and second adjustment methods.

[0028] In the above technical solution, the fresh air conditioner has a second position detection module, which is used to detect the position of the first air guide plate and the second air guide plate;

[0029] The method for controlling the first and second air guide plates to adjust according to the first adjustment method includes the following steps:

[0030] Step S1: Obtain the positions of the first air guide plate and the second air guide plate, and calculate the position difference between the first air guide plate and the second air guide plate in the vertical direction; based on the position difference, control the first air guide plate to swing up and down by a first angle according to the first adjustment method, and control the second air guide plate to swing up and down by a second angle according to the first adjustment method, so that the air guiding angles of the first air guide plate and the second air guide plate are the same.

[0031] In the above technical solution, the fresh air conditioner has a second position detection module, which is used to detect the position of the first air guide plate and the second air guide plate;

[0032] The method for controlling the first and second air guide plates to adjust according to the first and second adjustment methods includes the following steps:

[0033] Step S1: Obtain the positions of the first air guide plate and the second air guide plate, and calculate the position difference between the first air guide plate and the second air guide plate in the vertical direction; based on the position difference, control the first air guide plate to swing up and down by a first angle according to the first adjustment method, and control the second air guide plate to swing up and down by a second angle according to the first adjustment method, so that the air guiding direction of the first air guide plate and the second air guide plate is the same;

[0034] Step S2: Control the first air guide plate to swing left and right to adjust the third angle according to the second adjustment method, and control the second air guide plate to swing left and right to adjust the fourth angle according to the second adjustment method, so that the air guiding directions of the first air guide plate and the second air guide plate are opposite to each other, so that the airflow from the fresh air outlet and the airflow from the air supply outlet collide and mix.

[0035] In the above technical solution, the first position detection module is provided in two sets. One set of the first position detection module is used to obtain the position information of the personnel in the air supply direction of the fresh air outlet, and the other set of the first position detection module is used to obtain the position information of the personnel in the air supply direction of the air outlet.

[0036] The wind speed detection module is set up in two sets. One set of wind speed detection module is used to obtain the wind speed at the fresh air outlet, and the other set of wind speed detection module is used to obtain the wind speed at the air supply outlet.

[0037] The second position detection module is provided in two sets. One set of the second position detection module is used to obtain the position information of the first air guide plate, and the other set of the second position detection module is used to obtain the position information of the second air guide plate.

[0038] In the above technical solution, the fresh air conditioner also has a fresh air outlet mode, and the control method also includes:

[0039] When the fresh air conditioner is turned on, the outdoor temperature Tout and the user-set temperature Tset are obtained, the difference between the two is calculated and compared with the preset difference ΔT, and based on the comparison result, the mixed air supply mode and the fresh air supply mode are selected.

[0040] If △T≥△T, the mixed air supply mode is activated, with the indoor unit main module and the fresh air module starting up simultaneously.

[0041] If △T < △T, then in the fresh air supply mode, the indoor unit's main module is shut down, and the fresh air module is started.

[0042] In the above technical solution, under the mixed air supply mode, the outdoor temperature Tout and the user-set temperature Tset are continuously acquired and the difference ΔT between the two is calculated.

[0043] If △T < △T, then the fresh air conditioner will automatically switch from mixed air supply mode to fresh air supply mode.

[0044] In the above technical solution, in the mixed air supply mode, the fresh air fan operates at the first gear, which corresponds to the first speed.

[0045] In fresh air supply mode, the fresh air fan operates at the second speed setting, which corresponds to the second rotation speed.

[0046] The first rotational speed is less than the second rotational speed;

[0047] Control methods also include:

[0048] When the fresh air conditioner automatically switches from mixed air supply mode to fresh air supply mode, the fresh air fan switches from the first speed setting to the second speed setting.

[0049] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0050] I. In the mixed air supply mode of the fresh air conditioner in this embodiment of the invention, the first bypass connecting the main air supply path and the fresh air flow path can reduce the temperature difference between the heat exchange air of the indoor unit's main module and the fresh air of the fresh air module. Simultaneously, the first position detection module can detect the position information of the people in the room. When the fresh air conditioner supplies mixed air, it can select to open the fresh air inlet and / or the air supply outlet and / or control the air guide angle of the first air guide plate and / or control the air guide angle of the second air guide plate according to the position of the people, thereby avoiding the mixed air blowing directly on the user's body surface and causing discomfort. Attached Figure Description

[0051] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0052] Figure 1 This is a schematic diagram of the control method for the fresh air conditioner of the present invention;

[0053] Wherein: 1-Indoor unit main module; 11-Air inlet; 12-Air outlet; 13-Main air supply path; 131-First filter device; 132-Indoor heat exchanger; 133-Air supply fan; 2-Fresh air module; 21-Fresh air inlet; 22-Fresh air outlet; 23-Return air inlet; 24-Return air exhaust outlet; 25-Fresh air flow path; 251-Fresh air fan; 26-Return air flow path; 261-Return air fan; 27-Heat exchange component; 271-Second filter device; 28-First bypass; Detailed Implementation

[0054] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0055] Currently available fresh air conditioners on the market have excessively large temperature differences between the fresh air and heat exchange air during mixed airflow. This large temperature difference causes discomfort when the mixed airflow blows directly onto the user's body. In this embodiment of the invention, the fresh air conditioner, in mixed airflow mode, utilizes a first bypass connecting the main supply air path and the fresh air path to reduce the temperature difference between the heat exchange air from the indoor unit's main module and the fresh air from the fresh air module. Simultaneously, a first position detection module can detect the position information of people indoors. During mixed airflow, the fresh air conditioner can selectively open the fresh air vent and / or supply air vent and / or control the airflow angle of the first air guide plate and / or the airflow angle of the second air guide plate based on the person's position, thereby preventing the mixed air from blowing directly onto the user's body and causing discomfort.

[0056] The following is in conjunction with the appendix Figure 1 The technical solution of this embodiment is described in detail. Unless otherwise specified, the following implementation methods and embodiments can be combined with each other.

[0057] Example

[0058] like Figure 1 As shown, this embodiment proposes a control method for a fresh air conditioner. The fresh air conditioner includes an indoor unit and an outdoor unit. The indoor unit is a split design, which includes an indoor unit main module 1 and a fresh air module 2, wherein the indoor unit main module 1 and the fresh air module 2 are arranged adjacent to each other.

[0059] The indoor unit main module 1 is provided with an air inlet 11 and an air outlet 12, as well as an air supply main duct 13 connecting the air inlet 11 and the air outlet 12, and a first filter device 131, an indoor heat exchanger 132 and a blower 133 arranged sequentially along the airflow direction of the air supply main duct 13. The indoor heat exchanger 132 is in fluid communication with the compressor and outdoor heat exchanger of the outdoor unit in the refrigeration circuit. Both the air inlet 11 and the air outlet 12 are in fluid communication with the indoor environment.

[0060] The fresh air module 2 is provided with a fresh air inlet 21, a fresh air outlet 22, a return air inlet 23, a return air outlet 24, and a fresh air flow path 25 that fluidly connects the fresh air inlet 21 and the fresh air outlet 22 and a return air flow path 26 that fluidly connects the return air inlet 23 and the return air outlet 24.

[0061] A fresh air fan 251 is provided on the fresh air flow path 25, and a return air fan 261 is provided on the return air flow path 26. A heat exchange component 27 for heat exchange between fresh air and return air is coupled on the return air flow path 26 and the fresh air flow path 25. The heat exchange component 27 forms a first channel and a second channel. The inlet and outlet of the first channel are connected to the return air flow path 26, and the inlet and outlet of the second channel are connected to the fresh air flow path 25. A second filter device 271 is provided at the inlet of the second channel.

[0062] Fresh air outlet 22 is equipped with a fresh air valve, air supply outlet 12 is equipped with an air supply valve, a first air guide plate is provided at fresh air outlet 22, and a second air guide plate is provided at air supply outlet 12.

[0063] The fresh air inlet 21 and the return air exhaust outlet 24 are both in fluid communication with the external environment, and the fresh air outlet 22 and the return air inlet 23 are both in fluid communication with the indoor environment.

[0064] A first bypass 28 is connected between the main air supply line 13 and the fresh air flow line 25. One end of the first bypass 28 is connected between the air supply valve of the main air supply line 13 and the indoor heat exchanger 132, and the other end is connected between the fresh air valve of the fresh air flow line 25 and the outlet of the second channel. A first control valve is provided on the first bypass 28.

[0065] The fresh air conditioner is equipped with a hybrid mode that enables the fresh air module 2 and the indoor unit main module 1 to work together to regulate indoor air.

[0066] The fresh air conditioner is equipped with a first position detection module, which is used to detect the position information of people indoors.

[0067] Control methods include:

[0068] In the mixed air supply mode, the first control valve on the supply fan 133, the fresh air fan 251 and the first bypass 28 is turned on, and the location information of the people in the room is detected.

[0069] Based on the location information of people indoors, select to open the fresh air valve and / or the supply air valve and / or control the air guiding angle of the first air guide plate and / or control the air guiding angle of the second air guide plate.

[0070] In the mixed air supply mode of this embodiment of the invention, the first bypass 28 connecting the main air supply path 13 and the fresh air flow path 25 can reduce the temperature difference between the heat exchange air of the indoor unit main module 1 and the fresh air of the fresh air module 2. At the same time, the first position detection module can detect the position information of the people in the room. When the fresh air conditioner supplies mixed air, it can select to open the fresh air inlet and / or the air supply outlet and / or control the air guide angle of the first air guide plate and / or control the air guide angle of the second air guide plate according to the position of the people, thereby avoiding the discomfort caused by the mixed cold and hot air blowing directly on the user's body surface.

[0071] In any of the above embodiments, the method for selecting to open the fresh air outlet and / or the air supply outlet and / or controlling the air guiding angle of the first air guide plate and / or controlling the air guiding angle of the second air guide plate based on personnel location information includes:

[0072] If the air supply direction of the fresh air outlet contains personnel location information, the fresh air outlet will be closed and the air supply outlet will be opened to prevent the mixed airflow from flowing out of the air supply outlet and thus prevent the mixed airflow from blowing directly onto the user's body surface.

[0073] If the air supply direction of the air outlet contains personnel location information, the air outlet is closed and the fresh air outlet is opened to prevent the mixed airflow from flowing out of the fresh air outlet and thus prevent the mixed airflow from blowing directly on the user's body surface.

[0074] If the air supply direction of both the fresh air outlet and the air supply vent contains personnel location information, the system will control both the fresh air outlet and the air supply vent to open, and simultaneously change the air guide angle of the first air guide plate and the second air guide plate to change the air supply direction of the fresh air outlet and the air supply vent, so that the fresh air outlet and the air supply vent avoid the location of the indoor personnel in the air supply direction, and prevent the mixed airflow from the fresh air outlet and the air supply vent from blowing directly on the user's body surface.

[0075] In this embodiment of the invention, by setting a first bypass 28 that connects the main air supply path 13 and the fresh air flow path 25, the fresh air and the heat exchange air can be mixed before being blown out of the room, thereby avoiding the large temperature difference between the fresh air and the heat exchange air from affecting the user experience. At the same time, this embodiment of the invention sets a first position detection module, which enables the fresh air air conditioner to avoid the position of people in the room when mixing the air and blowing it out, thereby avoiding the mixed airflow from blowing directly on the user's body surface, thereby further reducing the discomfort that the mixed air may cause to the user due to the temperature difference.

[0076] In any of the above embodiments, the first air guide plate and the second air guide plate have a first adjustment method of vertical swing adjustment and a second adjustment method of horizontal swing adjustment. The fresh air air conditioner has a wind speed detection module for detecting the air outlet speed at the fresh air outlet and the air supply outlet.

[0077] When the air supply direction of both the fresh air outlet and the air supply vent contains personnel location information, the methods for controlling the air guiding angle of the first and second air guide plates include:

[0078] Obtain the air velocity v1 at the fresh air outlet and the air velocity v2 at the air supply outlet;

[0079] Calculate the speed difference ΔV between the two and compare it with the preset speed difference ΔV.

[0080] Based on the comparison results, the first and second air guide plates are adjusted according to the first adjustment method and / or the second adjustment method.

[0081] When both the fresh air outlet and the supply air vent of the fresh air conditioner are supplying air into the room, the first and second air guide plates at the two air vents can be adjusted according to the wind speed at the fresh air outlet and the supply air vent. This further reduces the user's discomfort when the fresh air conditioner is mixing the air.

[0082] Specifically, the method for controlling the first and second air guide plates to adjust according to the first adjustment method or the second adjustment method based on the comparison results includes:

[0083] If △V≤△V, the first and second air guide plates are adjusted according to the first adjustment method.

[0084] If △V > △Vset, the first and second air guide plates are adjusted according to the first and second adjustment methods.

[0085] When △V≤△V, it means that the wind speed difference between the fresh air outlet and the supply air outlet of the two air outlets is not large, and the mixed air flowing out from the two air outlets can be further mixed. At this time, it is only necessary to adjust the first and second air guide plates at the fresh air outlet and the supply air outlet of the two air outlets up and down. That is, as long as the airflow flowing out from the two air outlets is not directly blown on the user's body surface, it is fine.

[0086] When ΔV > ΔVset, it indicates a significant difference in air velocity between the two air outlets (fresh air outlet and supply air outlet). Due to this difference in velocity, the two airflows cannot mix sufficiently, resulting in a temperature difference between the two airflows entering the room, which can cause discomfort for the user. Therefore, it is necessary to consider not only ensuring the airflow doesn't directly hit the user's skin but also the mixing of the two airflows from the two air outlets (fresh air outlet and supply air outlet).

[0087] More specifically, the fresh air conditioner has a second position detection module, which is used to detect the position of the first air guide plate and the second air guide plate;

[0088] The method for controlling the first and second air guide plates to adjust according to the first adjustment method includes the following steps: The following steps are for the case where △V≤△V;

[0089] Step S1: Obtain the positions of the first air guide plate and the second air guide plate, and calculate the position difference between the first air guide plate and the second air guide plate in the vertical direction; based on the position difference, control the first air guide plate to swing up and down by a first angle according to the first adjustment method, and control the second air guide plate to swing up and down by a second angle according to the first adjustment method, so that the air guiding angles of the first air guide plate and the second air guide plate are the same.

[0090] In this embodiment of the invention, by setting a second position detection module, the positions of the first and second sets of air guide plates at the fresh air outlet and the air supply outlet can be monitored. When the first and second air guide plates are adjusted according to the first adjustment method, the controller can control the first and second sets of air guide plates to rotate by a corresponding angle according to the position data sent by the second position detection module, so that the air guiding angles of the first and second air guide plates are the same, thereby improving the mixing effect of the airflow flowing out from the fresh air outlet and the air supply outlet.

[0091] In any of the above embodiments, the method for controlling the first air guide plate and the second air guide plate to be adjusted according to the first adjustment method and the second adjustment method includes the following steps: the following steps are for the case where △V > △V.

[0092] Step S1: Obtain the positions of the first air guide plate and the second air guide plate, and calculate the position difference between the first air guide plate and the second air guide plate in the vertical direction; based on the position difference, control the first air guide plate to swing up and down by a first angle according to the first adjustment method, and control the second air guide plate to swing up and down by a second angle according to the first adjustment method, so that the air guiding direction of the first air guide plate and the second air guide plate is the same;

[0093] Step S2: Control the first air guide plate to swing left and right to adjust the third angle according to the second adjustment method, and control the second air guide plate to swing left and right to adjust the fourth angle according to the second adjustment method, so that the air guiding directions of the first air guide plate and the second air guide plate are opposite to each other, so that the airflow from the fresh air outlet and the airflow from the air supply outlet collide and mix.

[0094] In this embodiment of the invention, when ΔV > ΔVset is detected, by adding step S2, the mixing effect between the airflow flowing out from the fresh air outlet and the airflow flowing out from the air supply outlet can be further improved, avoiding the two airflows from failing to mix fully due to a large difference in speed.

[0095] In any of the above embodiments, the first position detection module is provided in two sets, one set of the first position detection module is used to obtain the position information of personnel in the air supply direction of the fresh air outlet, and the other set of the first position detection module is used to obtain the position information of personnel in the air supply direction of the air outlet.

[0096] The wind speed detection module is set up in two sets. One set of wind speed detection module is used to obtain the wind speed at the fresh air outlet, and the other set of wind speed detection module is used to obtain the wind speed at the air supply outlet.

[0097] The second position detection module is provided in two sets. One set of the second position detection module is used to obtain the position information of the first air guide plate, and the other set of the second position detection module is used to obtain the position information of the second air guide plate.

[0098] In any of the above embodiments, the fresh air conditioner also has a fresh air outlet mode, and the control method further includes:

[0099] When the fresh air conditioner is turned on, the outdoor temperature Tout and the user-set temperature Tset are obtained, the difference between the two is calculated and compared with the preset difference ΔT, and based on the comparison result, the mixed air supply mode and the fresh air supply mode are selected.

[0100] If △T≥△T, the mixed air supply mode is activated, with the indoor unit main module and the fresh air module starting up simultaneously.

[0101] If △T < △T, then in the fresh air supply mode, the indoor unit's main module is shut down, and the fresh air module is started.

[0102] Specifically, when ΔT ≥ ΔTset, it indicates a large temperature difference between the user-set temperature and the outdoor temperature. In this case, the airflow needs to be heated by the indoor heat exchanger 132 in the indoor unit main module 1 before being delivered into the room, so that the indoor temperature can reach the user's desired temperature range in a timely manner. At the same time, the fresh air module 2 introduces fresh outdoor air to ensure that the indoor airflow can mix with the airflow after heat exchange in the indoor unit main module 1 to jointly regulate the indoor air temperature, humidity, and other air parameters. When ΔT < ΔTset, it indicates a small temperature difference between the user-set temperature and the outdoor temperature. In this case, simply using outdoor fresh air is sufficient to meet the user's needs, and there is no need to start the indoor unit main module 1, thereby reducing unnecessary energy consumption during the operation of the fresh air air conditioner.

[0103] In any of the above embodiments, in the mixed air supply mode, the outdoor temperature Tout and the user-set temperature Tset are continuously acquired and the difference ΔT between the two is calculated.

[0104] If ΔT < ΔTset, the fresh air conditioner automatically switches from mixed air supply mode to fresh air supply mode. In this embodiment of the invention, the fresh air conditioner can detect the difference between the outdoor temperature and the user-set temperature in real time during operation, and can control the air supply mode of the fresh air conditioner in real time according to the difference, thereby making the fresh air conditioner more energy-efficient during operation.

[0105] In any of the above embodiments, in the mixed air supply mode, the fresh air fan operates at the first gear, which corresponds to the first speed.

[0106] In fresh air supply mode, the fresh air fan operates at the second speed setting, which corresponds to the second rotation speed.

[0107] The first rotational speed is less than the second rotational speed;

[0108] Control methods also include:

[0109] When the fresh air conditioner automatically switches from mixed air supply mode to fresh air supply mode, the fresh air fan switches from the first speed setting to the second speed setting.

[0110] When the fresh air conditioner in this embodiment of the invention switches from mixed air supply mode to fresh air supply mode, since there is only a single stream of outdoor fresh air, there will be no temperature difference when delivering air to the room. Therefore, the speed of the fresh air fan can be increased accordingly, so that the indoor temperature can quickly reach the temperature range desired by the user.

[0111] It is worth noting that the operations performed by the indoor unit main module 1 and / or the fresh air module 2 during operation in the embodiments of the present invention only indicate that when the fresh air conditioner is started, the two modules, indoor unit main module 1 and fresh air module 2, can operate in this way, that is, after the user starts the fresh air conditioner, there are no other intervention operations. However, it is not limited to the two modules operating only in this way. When the user controls the indoor unit main module 1 or the fresh air module 2 separately, the indoor unit main module 1 and the fresh air module 2 can also perform corresponding operations according to the operation instructions specified by the user.

[0112] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0113] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

[0114] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0115] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A method for controlling a fresh air conditioning system, characterized in that, The fresh air conditioner includes an indoor unit and an outdoor unit. The indoor unit is a split type, which includes an indoor unit main module (1) and a fresh air module (2). The indoor unit main module (1) and the fresh air module (2) are arranged adjacent to each other. The indoor unit main module (1) is provided with an air inlet (11) and an air outlet (12), as well as a main air supply path (13) connecting the air inlet (11) and the air outlet (12), and a first filter device (131), an indoor heat exchanger (132) and a blower (133) arranged sequentially along the airflow direction of the main air supply path (13). The indoor heat exchanger (132) is in fluid communication with the compressor and outdoor heat exchanger of the outdoor unit in the refrigeration circuit. The air inlet (11) and the air outlet (12) are both in fluid communication with the indoor environment. The fresh air module (2) is provided with a fresh air inlet (21), a fresh air outlet (22), a return air inlet (23), a return air outlet (24), a fresh air flow path (25) that fluidly connects the fresh air inlet (21) and the fresh air outlet (22), and a return air flow path (26) that fluidly connects the return air inlet (23) and the return air outlet (24). A fresh air fan (251) is provided on the fresh air flow path (25), and a return air fan (261) is provided on the return air flow path (26). A heat exchanger (27) for heat exchange between fresh air and return air is coupled on the return air flow path (26) and the fresh air flow path (25). The heat exchanger (27) forms a first channel and a second channel. The inlet and outlet of the first channel are connected to the return air flow path (26), and the inlet and outlet of the second channel are connected to the fresh air flow path (25). A second filter device (271) is provided at the inlet of the second channel. The fresh air outlet (22) is equipped with a fresh air valve, the air supply outlet (12) is equipped with an air supply valve, the fresh air outlet (22) is equipped with a first air guide plate, and the air supply outlet (12) is equipped with a second air guide plate. The fresh air inlet (21) and return air exhaust outlet (24) are in fluid communication with the external environment, and the fresh air outlet (22) and return air inlet (23) are in fluid communication with the indoor environment. A first bypass (28) is connected between the main air supply path (13) and the fresh air flow path (25). One end of the first bypass (28) is connected between the air supply valve of the main air supply path (13) and the indoor heat exchanger (132), and the other end is connected between the fresh air valve of the fresh air flow path (25) and the second channel outlet. A first control valve is provided on the first bypass (28). The fresh air conditioner is equipped with a hybrid mode that enables the fresh air module (2) and the indoor unit main module (1) to work together to regulate indoor air; The fresh air conditioner is equipped with a first position detection module, which is used to detect the position information of people in the room. The control method includes: In the mixed air supply mode, the first control valve on the supply fan (133), the fresh air fan (251) and the first bypass (28) is turned on, and the indoor personnel location information is detected; Based on the location information of people indoors, select to open the fresh air valve and / or supply air valve and / or control the air guiding angle of the first air guide plate and / or control the air guiding angle of the second air guide plate; The method for selecting to open the fresh air valve and / or supply air valve and / or controlling the air guiding angle of the first air guide plate and / or controlling the air guiding angle of the second air guide plate based on the indoor personnel location information includes: If personnel location information is detected in the air supply direction of the fresh air outlet, the fresh air outlet will be closed and the air supply outlet will be opened. If personnel location information is detected in the air supply direction of the air outlet, the air outlet is controlled to close and the fresh air outlet is opened. If personnel location information is detected in both the fresh air outlet and the air supply outlet in the air supply direction, the fresh air outlet and the air supply outlet are both opened, and the air guiding angles of the first air guide plate and the second air guide plate are changed to change the air supply direction of the fresh air outlet and the air supply outlet, so that the fresh air outlet and the air supply outlet avoid the location of the indoor personnel in the air supply direction.

2. The control method according to claim 1, characterized in that, Both the first and second air guide plates have a first adjustment method of vertical swing adjustment and a second adjustment method of horizontal swing adjustment. The fresh air air conditioner has a wind speed detection module for detecting the air outlet speed at the fresh air outlet and the air supply outlet. When the air supply direction of both the fresh air outlet and the air supply vent contains personnel location information, the method for controlling the air guiding angle of the first air guide plate and the second air guide plate includes: Obtain the air velocity v1 at the fresh air outlet and the air velocity v2 at the air supply outlet; Calculate the speed difference ΔV between the two and compare it with the preset speed difference ΔV. Based on the comparison results, the first air guide plate and the second air guide plate are adjusted according to the first adjustment method and / or the second adjustment method.

3. The control method according to claim 2, characterized in that, The method for controlling the first and second air guide plates to adjust according to a first adjustment method or a second adjustment method based on the comparison results includes: If △V≤△Vset, the first air guide plate and the second air guide plate are adjusted according to the first adjustment method. If △V > △Vset, then the first air guide plate and the second air guide plate are both adjusted according to the first adjustment method and the second adjustment method.

4. The control method according to claim 3, characterized in that, The fresh air conditioner has a second position detection module, which is used to detect the positions of the first air guide plate and the second air guide plate. The method for controlling the first air guide plate and the second air guide plate to adjust according to the first adjustment method includes the following steps: Step S1: Obtain the positions of the first air guide plate and the second air guide plate, and calculate the position difference between the first air guide plate and the second air guide plate in the vertical direction; based on the position difference, control the first air guide plate to swing up and down by a first angle according to a first adjustment method, and control the second air guide plate to swing up and down by a second angle according to the first adjustment method, so that the air guiding angles of the first air guide plate and the second air guide plate are the same.

5. The control method according to claim 3, characterized in that, The fresh air conditioner has a second position detection module, which is used to detect the positions of the first air guide plate and the second air guide plate. The method for controlling the first air guide plate and the second air guide plate to adjust according to the first adjustment method and the second adjustment method includes the following steps: Step S1: Obtain the positions of the first air guide plate and the second air guide plate, and calculate the position difference between the first air guide plate and the second air guide plate in the vertical direction; based on the position difference, control the first air guide plate to swing up and down by a first angle according to a first adjustment method, and control the second air guide plate to swing up and down by a second angle according to the first adjustment method, so that the air guiding direction of the first air guide plate and the second air guide plate is the same; Step S2: Control the first air guide plate to swing left and right to adjust the third angle according to the second adjustment method, and control the second air guide plate to swing left and right to adjust the fourth angle according to the second adjustment method, so that the air guiding directions of the first air guide plate and the second air guide plate are opposite, so that the airflow flowing out from the fresh air outlet and the airflow flowing out from the air outlet are mixed and opposed.

6. The control method according to claim 5, characterized in that, The first position detection module is provided in two sets. One set of the first position detection module is used to obtain the position information of personnel in the air supply direction of the fresh air outlet, and the other set of the first position detection module is used to obtain the position information of personnel in the air supply direction of the air outlet. The wind speed detection module is provided in two sets. One set of the wind speed detection module is used to obtain the wind speed at the fresh air outlet, and the other set of the wind speed detection module is used to obtain the wind speed at the air supply outlet. The second position detection module is provided in two sets. One set of the second position detection module is used to obtain the position information of the first air guide plate, and the other set of the second position detection module is used to obtain the position information of the second air guide plate.

7. The control method according to any one of claims 1-6, characterized in that, The fresh air conditioner also has a fresh air outlet mode, and the control method further includes: When the fresh air conditioner is turned on, the outdoor temperature Tout and the user-set temperature Tset are obtained, the difference between the two is calculated and compared with the preset difference ΔT, and based on the comparison result, the mixed air supply mode and the fresh air supply mode are selected. If △T≥△T, the mixed air supply mode is activated, with the indoor unit main module and the fresh air module starting up simultaneously. If △T < △T, then in the fresh air supply mode, the indoor unit's main module is shut down, and the fresh air module is started.

8. The control method according to claim 7, characterized in that, In the mixed air supply mode, the outdoor temperature Tout and the user-set temperature Tset are continuously acquired and the difference ΔT between the two is calculated. If △T < △T, then the fresh air conditioner will automatically switch from mixed air supply mode to fresh air supply mode.

9. The control method according to claim 8, characterized in that, In the mixed air supply mode, the fresh air fan operates at the first gear, which corresponds to the first speed. In the fresh air outlet mode, the fresh air fan operates at the second speed setting, which corresponds to the second rotation speed. The first rotational speed is less than the second rotational speed; The control method further includes: When the fresh air conditioner automatically switches from mixed air supply mode to fresh air supply mode, the fresh air fan switches from the first speed setting to the second speed setting.

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