Indoor air conditioning system, indoor air conditioning method thereof, and readable storage medium

Abstract

The present invention discloses an indoor air conditioning method. Based on an indoor air conditioning method including an exhaust fan, a fresh air fan, and a circulation fan, the method includes: obtaining the state parameters of an oil fume extractor within the space where the air treatment device acts; when the state parameters are in an on state, controlling the exhaust fan to turn on, controlling the bypass valve to turn on, and controlling the circulation fan to turn on; wherein, when the circulation fan is on and the bypass valve is on, outdoor fresh air enters the space through the circulation air duct, and when the exhaust fan is on, indoor air is discharged to the outdoor environment through the exhaust air duct. The present invention also discloses an indoor air conditioning system and a computer-readable storage medium. The present invention aims to improve the smoke exhaust effect when the oil fume extractor is operating.

Description

Technical Field

[0001] The present invention relates to the technical field of air treatment equipment, and particularly to an indoor air conditioning method, an indoor air conditioning system, and a computer-readable storage medium. Background Art

[0002] With the development of economy and technology and the continuous improvement of people's living standards, range hoods are more and more widely used. A range hood is generally installed in an indoor space with a large amount of oil fume, such as a kitchen. When the range hood is turned on, the oil fume in the indoor space where it is located can be exhausted outdoors by means of air extraction.

[0003] Among them, since the air in the indoor space where the range hood is located is continuously exhausted during the operation of the range hood, the indoor will be in a negative pressure state. The increased air extraction resistance of the range hood under the negative pressure state will lead to poor smoke exhaust effect. Summary of the Invention

[0004] The main object of the present invention is to provide an indoor air conditioning method, aiming to improve the smoke exhaust effect during the operation of the range hood.

[0005] To achieve the above object, the present invention provides an indoor air conditioning method based on an air treatment device. The air treatment device includes a housing, a circulation fan, an exhaust fan, and a bypass valve. The housing is provided with an indoor air outlet, an indoor air exhaust port, and an outdoor air exhaust port. An exhaust air duct and a circulation air duct are formed in the housing. The circulation air duct connects the circulation air inlet and the indoor air outlet. The exhaust air duct connects the indoor air exhaust port and the outdoor air exhaust port. The circulation fan is arranged in the circulation air duct, and an exhaust fan is arranged in the exhaust air duct. The indoor air conditioning method includes the following steps:

[0006] Obtain the state parameters of the range hood in the action space of the air treatment equipment;

[0007] When the state parameter is in the on state, control the exhaust fan to turn on, control the bypass valve to turn on, and control the circulation fan to turn on;

[0008] Among them, when the circulation fan is turned on and the bypass valve is turned on, outdoor fresh air enters the space through the circulation air duct. When the exhaust fan is turned on, indoor air is discharged to the outdoor environment through the exhaust air duct.

[0009] Optionally, a circulation air valve is provided at the circulation air inlet. Before the step of controlling the circulation fan to turn on, it further includes:

[0010] When the state parameter is in the on state, control the circulation air valve to reduce the opening degree.

[0011] Optionally, the step of controlling the circulation fan to turn on includes:

[0012] Obtain the total exhaust volume of the space;

[0013] Determine the target rotational speed of the circulation fan according to the total exhaust volume;

[0014] Control the operation of the circulation fan according to the target rotational speed; when the circulation fan operates at the target rotational speed, the air intake volume of the space is greater than or equal to the total exhaust volume.

[0015] Optionally, the step of obtaining the total exhaust volume of the space includes:

[0016] Obtain the first exhaust volume of the range hood, obtain the second exhaust volume of the exhaust fan, and obtain the exhaust volume correction parameter corresponding to the fresh air fan;

[0017] Determine the total exhaust volume according to the first exhaust volume, the second exhaust volume, and the exhaust volume correction parameter.

[0018] Optionally, the step of obtaining the first exhaust volume of the range hood includes:

[0019] Obtain the power parameter of the range hood;

[0020] Determine the first exhaust volume according to the power parameter.

[0021] Optionally, the step of obtaining the exhaust volume correction parameter corresponding to the fresh air fan includes:

[0022] Obtain the operating rotational speed of the fresh air fan;

[0023] Determine the exhaust volume correction parameter according to the operating rotational speed;

[0024] Wherein, the exhaust volume correction parameter increases with the increase of the operating rotational speed.

[0025] Optionally, the housing is provided with a fresh air inlet, a fresh air duct independent of the circulation air duct is formed in the housing, the fresh air duct communicates the fresh air inlet with the indoor air outlet, a heat exchanger is arranged in the circulation air duct, and the exhaust air duct and the fresh air duct cross and pass through the total heat exchanger. During the process of controlling the exhaust fan to be turned on, controlling the bypass valve to be turned on, and controlling the circulation fan to be turned on, control the fresh air fan to be turned on;

[0026] When the circulation fan and the fresh air fan are turned on, outdoor fresh air is sent into the indoor space through the circulation air duct and the fresh air duct.

[0027] Optionally, before the step of controlling the fresh air fan to be turned on, it further includes:

[0028] When the state parameter is in the on state, obtain the air pressure change rate in the space; the air pressure change rate is the magnitude of the decrease in the air pressure in the space per unit time;

[0029] When the air pressure change rate is greater than the set change rate, execute the step of controlling the fresh air fan to turn on.

[0030] In addition, to achieve the above object, the present application also proposes an indoor air conditioning system, the indoor air conditioning system includes an air treatment device and a range hood detection device, the range hood detection device is used to detect the state parameters of the range hood, and the air treatment device includes:

[0031] A housing, the housing is provided with an indoor air outlet, an indoor air exhaust port and an outdoor air exhaust port, an exhaust air duct and a circulating air duct are formed in the housing, the circulating air duct communicates the circulating air inlet with the indoor air outlet, and the exhaust air duct communicates the indoor air exhaust port and the outdoor air exhaust port;

[0032] A circulating fan, arranged in the circulating air duct;

[0033] An exhaust fan, arranged in the exhaust air duct;

[0034] A controller, the range hood detection device, the circulating fan and the exhaust fan are all connected to the controller, and the controller includes: a memory, a processor, and a computer program stored on the memory and executable on the processor, and the computer program is executed by the processor to implement the steps of the indoor air conditioning method described in any one of the above.

[0035] Optionally, a circulating air valve is provided at the circulating air inlet, and the circulating air valve is connected to the controller.

[0036] Optionally, the housing is provided with a fresh air inlet, and a fresh air duct independent of the circulating air duct is formed in the housing, and the fresh air duct communicates the fresh air inlet with the indoor air outlet.

[0037] Optionally, a total heat exchanger is provided in the housing, and the exhaust air duct and the fresh air duct cross through the total heat exchanger.

[0038] Optionally, the indoor air conditioning system further includes a air pressure detection device, the air pressure detection device is used to detect the air pressure detection data in the space where the air treatment device is located, and the air pressure detection device is connected to the controller.

[0039] In addition, to achieve the above object, the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the indoor air conditioning method described in any one of the above are implemented.

[0040] An indoor air conditioning method proposed by the present invention is based on an air treatment device including an exhaust fan, a fresh air fan, and a circulation fan. When the range hood is in an on state within the action space of the air treatment device, through the cooperation of a bypass valve between the circulation air duct and the fresh air duct and the circulation fan, outdoor fresh air can be sent into the indoor space through the circulation air duct to achieve air supply to the indoor space. The fresh air supply can reduce the influence of exhaust on the indoor negative pressure. On this basis, when the exhaust fan is turned on, the air treatment device and the range hood can cooperate to exhaust air, which is beneficial to increasing the exhaust volume and accelerating the smoke exhaust efficiency of the indoor environment, thereby effectively improving the smoke exhaust effect when the range hood is operating. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic structural diagram of an embodiment of the air treatment device of the present invention;

[0042] Figure 2 It is a schematic diagram of the internal structure of the air treatment device of the present invention;

[0043] Figure 3 is Figure 2 a top view of;

[0044] Figure 4 is Figure 3 a sectional view taken along A-A in;

[0045] Figure 5 is Figure 3 a sectional view taken along B-B in;

[0046] Figure 6 is Figure 3 a sectional view taken along C-C in;

[0047] Figure 7 It is a schematic structural diagram of the air treatment device of the present invention in the first working mode;

[0048] Figure 8 It is a schematic structural diagram of the air treatment device of the present invention in the second working mode;

[0049] Figure 9 It is a schematic structural diagram of the air treatment device of the present invention in the third working mode;

[0050] Figure 10 It is a schematic structural diagram of the exhaust mode of the air treatment device of the present invention;

[0051] Figure 11Schematic diagram of the hardware structure involved in the operation of an embodiment of the air treatment device of the present invention;

[0052] Figure 12 Schematic flow chart of an embodiment of the indoor air conditioning method of the present invention;

[0053] Figure 13 Schematic flow chart of another embodiment of the indoor air conditioning method of the present invention;

[0054] Figure 14 is Figure 13 Schematic diagram of the refined process of step S11 in

[0055] Figure 15 Schematic flow chart of yet another embodiment of the indoor air conditioning method of the present invention.

[0056] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0057] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0058] The main solution of the embodiment of the present invention is: obtaining the state parameters of the range hood in the action space of the air treatment device; when the state parameter is in the on state, controlling the exhaust fan to turn on, controlling the bypass valve to turn on, and controlling the circulation fan to turn on; wherein, when the circulation fan is turned on and the bypass valve is turned on, outdoor fresh air enters the space through the circulation air duct, and when the exhaust fan is turned on, indoor air is discharged to the outdoor environment through the exhaust air duct.

[0059] In the prior art, when the range hood is operating, the air in the indoor space where it is located is continuously discharged, which will cause the indoor to be in a negative pressure state. Under the negative pressure state, the air extraction resistance of the range hood increases, resulting in a poor smoke exhaust effect.

[0060] The present invention provides the above solution to improve the smoke exhaust effect when the range hood is operating.

[0061] The embodiment of the present invention proposes an air treatment device.

[0062] Specifically, referring to Figures 1 to 3 and Figures 7 to 9 , in this embodiment, the air treatment device includes a housing 100, a fresh air fan 200, a circulation fan 300 and a heat exchanger 600 provided in the housing 100.

[0063] Inside the housing 100, an independent fresh air duct 110 and a circulating air duct 120 are formed. The housing 100 is provided with a fresh air inlet 101, a circulating air inlet 102, and an indoor air outlet 103. Among them, the fresh air duct 110 communicates with the fresh air inlet 101 and the indoor air outlet 103, the circulating air duct 120 communicates with the circulating air inlet 102 and the indoor air outlet 103, and a circulating air valve 102a is provided at the circulating air inlet 102.

[0064] The fresh air fan 200 is arranged inside the fresh air duct 110, the circulating air fan 300 is arranged inside the circulating air duct 120, and the fresh air duct 110 and the circulating air duct 120 are connected or blocked through a bypass valve 141.

[0065] The air treatment device has at least two modes:

[0066] In the first mode, the bypass valve 141 is closed, and the fresh air fan 200 drives outdoor fresh air to enter the fresh air duct 110 from the fresh air inlet 101 and flow to the indoor air outlet 103;

[0067] In the second mode, the bypass valve 141 is opened, the circulating air valve 102a is closed, and the circulating air fan 300 drives outdoor fresh air to enter the circulating air duct 120 from the fresh air inlet 101 and flow to the indoor air outlet 103.

[0068] In this embodiment, the fresh air inlet 101 communicates with the outdoor environment, and the circulating air inlet 102 and the indoor air outlet 103 communicate with the indoor environment or indoor air ducts. The fresh air duct 110 and the circulating air duct 120 are independent of each other, and the fresh air fan 200 and the circulating air fan 300 also operate independently of each other. The fresh air duct 110 and the circulating air duct 120 are connected or blocked through the bypass valve 141, and different fresh air introduction paths can be realized through the opening and closing of the bypass valve 141:

[0069] When the bypass valve 141 is closed, the fresh air introduction method at this time is to turn on the fresh air fan 200, and drive outdoor fresh air to flow into the room or indoor air duct from the indoor air outlet 103 through the fresh air inlet 101 and the fresh air duct 110 in sequence by the fresh air fan 200, which is the above-mentioned first mode. In this mode, the circulating air fan 300 in the circulating air duct 120 can be turned on or off, which has no impact on the fresh air introduction. This first mode is applicable to the situation where the indoor air is in a slightly negative or medium negative pressure state, such as when the range hood is operating at a low gear or only a small number of exhaust fans are turned on, to supplement an appropriate amount of fresh air into the room to ensure the air pressure balance between indoors and outdoors.

[0070] When the bypass valve 141 is opened, the fresh air duct 110 is connected to the recirculated air duct 120 at this time. By closing the recirculated air valve 102, only by turning on the recirculating fan 300, the outdoor fresh air can be driven to flow into the room or the indoor air duct through the fresh air inlet 101 and the recirculated air duct 120 from the indoor air outlet 103 in sequence, which is the above-mentioned second mode. This second mode is also applicable to the situation where the indoor air is in a slightly negative pressure or medium negative pressure state. For example, when the range hood is operating at a low gear or only a small number of exhaust fans are turned on, an appropriate amount of fresh air is supplied to the room to ensure the air pressure balance between the indoor and outdoor.

[0071] Or, when the bypass valve 141 is opened, the recirculated air valve 102 is closed, and at the same time, the fresh air fan 200 and the recirculating fan 300 are turned on. After the outdoor fresh air is driven to enter from the fresh air inlet 101, a part of the air flow flows from the fresh air duct 110 to the indoor air outlet 103, and another part of the air flow flows from the recirculated air duct 120 to the indoor air outlet 103. At this time, the fresh air introduction amount is jointly driven by the fresh air fan 200 and the recirculating fan 300, which is the third mode of the air handling device. This third mode is applicable to the situation where the indoor air is in a medium negative pressure or high negative pressure state. For example, when the range hood is operating at a medium / high gear or a large number of exhaust fans are turned on or the range hood and the exhaust fans are operating at the same time, a large amount of fresh air is supplied to the room to ensure the air pressure balance between the indoor and outdoor.

[0072] It should be noted that when the recirculating fan 300 is used to introduce fresh air, the recirculated air valve 102a is not necessarily in the closed state and can also be in the open state. At this time, both the recirculated air inlet 102 and the bypass valve 141 are opened, then the recirculating fan 300 can drive the indoor air and the outdoor fresh air to enter the recirculated air duct 120 at the same time. After the outdoor fresh air and the indoor fresh air are mixed and heat-exchanged in the recirculated air duct 120, they are then introduced into the indoor environment from the indoor air outlet 103, which can reduce the temperature impact on the indoor air outlet 103. Or when there is a heat exchanger in the recirculated air duct 120, the mixed gas of the outdoor fresh air and the indoor fresh air can reduce the temperature impact on the heat exchanger and improve the energy-saving effect. This method can be applicable to the situation where the demand for fresh air replenishment is small.

[0073] When the bypass valve 141 is closed, the recirculating fan 300 can also be turned on alone without turning on the fresh air fan 200. This method can be used for the situation where the air pressures in different indoor areas are different. For example, when the range hood in the kitchen is operating and the air volume in the living room is large, the air in the living room can be driven by the recirculating fan 300 through the recirculated air inlet 102 to flow from the indoor air outlet 103 to the air duct connected to the kitchen, so as to realize the replenishment of the air flow in the living room with a large air volume into the kitchen in a negative pressure state, thereby achieving the stability of the air pressure in the kitchen according to the air volume distribution between different indoor areas and improving the working efficiency of the range hood.

[0074] It can be understood that the structural form of the bypass valve 141 can be determined according to the actual situation. For example, it can be a door structure, a spherical structure, or a needle structure, etc. Different adjustment methods are applicable to different structural forms. For example, the door structure can be adjusted by sliding or rotational drive, the spherical structure can be adjusted by rotational drive, and the needle structure can be adjusted by sliding drive, etc. The specific adjustment effect needs to be determined according to the actual demand for the fresh air flow. The position where the bypass valve 141 is set can also be determined according to the actual situation. For example, it can be set on the air inlet side of the circulation fan 300 and / or the fresh air fan 200, or on the air outlet side of the circulation fan 300 and / or the fresh air fan 200, or on the air inlet side of the circulation fan 300 and the air outlet side of the fresh air fan 200, etc. Its specific position can be determined according to the internal structure layout of the air handling device.

[0075] In the actual application process, functional modules such as a heat exchanger 600, a purification module, a humidification module, or a dehumidification module can be set in the circulation air duct 120 to realize the circulation of the indoor air for self-air treatment. When in the second mode or the third mode, the fresh air introduced into the circulation air duct 120 by the circulation fan 400 can first pass through the treatment of the above functional modules and then enter the room to further improve the quality of the indoor air and reduce the impact on the indoor temperature and humidity. Of course, the above functional modules can also be set in the fresh air duct 110 so that the outdoor fresh air can be pre-treated in the first mode. In this embodiment, for the sake of simplifying the structure, a purification module 800 and a heat exchanger 600 are set at the indoor air outlet 103 that is connected to both the circulation air duct 120 and the fresh air duct 130. At the same time, in order to further improve the quality of the fresh air, a filtration module 700 is set at the fresh air inlet 101, so that no matter in which mode the fresh air is introduced, the outdoor fresh air entering the housing 100 can be filtered, reducing the wear on the internal structure of the housing 100 and improving the air quality.

[0076] In the air handling device of the technical solution of the present invention, an independent fresh air duct 110 and a circulating air duct 120 are formed inside the housing 100. The fresh air duct 110 is connected to a fresh air inlet 101 and an indoor air outlet 103, and the circulating air duct 120 is connected to a circulating air inlet 102 and an indoor air outlet 103. The indoor air outlet 103 can blow the air flow in the circulating air duct 120 or the fresh air duct 110 into the room or divert it into a duct connected to different areas in the room. The fresh air duct 110 and the circulating air duct 120 are connected or blocked through a bypass valve 141, so that the air handling device has at least two modes of supplying fresh air to the room: when the bypass valve 141 is closed, fresh air can be supplied to the room only through the fresh air fan 200 and the fresh air duct 110; when the bypass valve 141 is opened and the circulating air valve 102a is closed, fresh air can be supplied to the room through the circulating air fan 300 and the circulating air duct 120. Thus, when the air handling device is in use, various different fresh air supply modes can be adopted according to different requirements. For example, when the range hood or exhaust fan is turned on, air can be supplied to the kitchen, bathroom or other areas in the room to ensure the air pressure balance between indoors and outdoors and improve the indoor air quality.

[0077] In an embodiment of the present invention, referring to Figures 2 to 5 , the bypass valve 141 is used to connect or block the fresh air inlet 101 and the air inlet side of the circulating air fan 300.

[0078] It can be understood that the structural form and installation position of the bypass valve 141 can be determined according to the actual situation. In this embodiment, by arranging the bypass valve 141 between the fresh air inlet 101 and the air inlet side of the circulating air fan 300, when the bypass valve 141 is opened, outdoor fresh air can directly enter the inside of the circulating air fan 300 from the fresh air inlet 101 through the suction of the circulating air fan 300, reducing the flow path of the fresh air flow and thus reducing the wind resistance.

[0079] Optionally, the bypass valve 141 can be a single door body or a double door body rotatably connected to the housing 100, and the connection or blocking function is realized by the rotation of the door body. When it is a single door body, one side of the single door body can be hinged to the housing 100, and the other side rotates to open and close; when it is a double door body, the opposite sides of the double door body can be hinged to the housing 100, and the opposite sides can rotate to be connected to the fresh air inlet 101 to form a channel from the fresh air inlet 101 to the air inlet side of the circulating air fan 300.

[0080] To improve the compactness of the overall structure, referring to Figures 2 to 6, in an embodiment of the present invention, the circulating air duct 120 includes a circulating air cavity 121 for installing the circulating air fan 300, and the circulating air inlet 102 is communicated with the circulating air cavity 121; the fresh air duct 110 includes a fresh air cavity 111 for installing the fresh air fan 200, and the fresh air inlet 101 is communicated with the fresh air cavity 111;

[0081] The circulating air cavity 121 and the fresh air cavity 111 are arranged adjacent to each other and separated by a partition plate 140, and the bypass valve 141 is arranged on the partition plate 140.

[0082] In this embodiment, the circulating air fan 300 is installed in the circulating air cavity 121, the fresh air fan 200 is installed in the fresh air cavity 111, the circulating air cavity 121 and the fresh air cavity 111 are separated by a partition plate 140, the bypass valve 141 is arranged on the partition plate 140, and what the bypass valve 141 actually connects or blocks is the fresh air cavity 111 and the circulating air cavity 121. The fresh air inlet 101 is communicated with the fresh air cavity 111. Whether using the fresh air fan 200 or the circulating air fan 300, after introducing outdoor fresh air into the fresh air cavity 111 through the fresh air inlet 101 first, subsequent diversion actions are carried out. When the bypass valve 141 is closed, the fresh air fan 200 drives the outdoor fresh air to flow out from the indoor air outlet 103 through the fresh air inlet 101, the fresh air cavity 111, and the fresh air fan 200 in sequence; when the bypass valve 141 is opened and the circulating air valve 102a is closed, when both the fresh air fan 200 and the circulating air fan 300 are turned on, after the outdoor fresh air enters the fresh air cavity 111 from the fresh air inlet 101, it is divided into two parts. One part enters the fresh air fan 200 and flows from the fresh air duct 110 to the indoor air outlet 103, and the other part enters the circulating air cavity 121 through the bypass valve 141 and flows from the circulating air duct 120 to the indoor air outlet 103; or, only the circulating air fan 300 is turned on. After the outdoor fresh air enters the fresh air cavity 111 from the fresh air inlet 101, it then enters the circulating air cavity 121 and flows to the indoor air outlet 103 through the circulating air duct 120.

[0083] It can be understood that the circulating air cavity 121 and the fresh air cavity 111 are arranged adjacent to each other, which simplifies the structure of the bypass valve 141. The circulating air cavity 121 and the fresh air cavity 111 are separated by a partition plate 140, and the fresh air cavity 111 is used to realize the communication path between the circulating air cavity 121 and the fresh air inlet 111. There is no need to additionally set an air flow channel, which simplifies the structure, improves the compactness of the overall structural layout, and at the same time shortens the flow path of the fresh air flow and reduces the wind resistance.

[0084] To further improve the indoor air quality, refer to Figures 2 to 6 and Figure 10, in an embodiment of the present invention, the housing 100 is provided with an indoor air outlet 104 and an outdoor air outlet 105. An exhaust air duct 130 communicating with both the indoor air outlet 104 and the outdoor air outlet 105 is formed inside the housing 100, and an exhaust air fan 400 is provided in the exhaust air duct 130.

[0085] It can be understood that on the basis of supplementing fresh air indoors in the foregoing embodiment, when the fresh air indoors is supplemented sufficiently or excessively, it may affect the temperature / humidity of the indoor air. Then, the exhaust air fan 400 can be turned on to drive the indoor air to enter the exhaust air duct 130 from the indoor air outlet 104 and then be discharged to the outdoor air outlet 105, so as to ensure the indoor and outdoor air pressure balance and realize the function of indoor air ventilation, improving the indoor air quality.

[0086] Of course, in actual application, it can also be that when the indoor air quality is poor, such as when the range hood in the kitchen fails, the exhaust fan in the bathroom fails, or other reasons cause the indoor air to be turbid, the indoor dirty air can be discharged by turning on the exhaust mode. Optionally, when the indoor and outdoor air pressures are almost balanced, but the indoor air quality is poor, the first mode of closing the bypass valve 141 and only using the fresh air fan 200 to introduce fresh air + turning on the exhaust air fan 400 can be adopted, or the second mode of opening the bypass valve 141, closing the circulation air valve 102a, and only turning on the circulation fan 300 to introduce fresh air + turning on the exhaust air fan 400 can be adopted to realize the function of indoor air ventilation when the indoor and outdoor air pressures are balanced.

[0087] To further improve the compactness of the overall structure, referring to Figure 1 and Figure 2 , in an embodiment of the present invention, the outdoor air outlet 105 and the fresh air inlet 101 are located on the same side of the housing 100; the indoor air outlet 104 and the circulation air inlet 102 are located on the same side of the housing 100.

[0088] It can be understood that both the fresh air inlet 101 and the outdoor air outlet 105 communicate with the outdoor environment. In application, a through-wall pipe can be directly externally connected at the air outlet or a connecting air duct can be connected and installed at the air outlet and passed through to the outside. Setting the fresh air inlet 101 and the outdoor air outlet 105 on the same side of the housing 100 can only require taking over in the area on the same side of the housing 100, without occupying the areas on other sides of the housing 100, reducing the occupied space of the overall structure of the air treatment device.

[0089] Similarly, both the indoor air outlet 104 and the recirculating air inlet 102 communicate with the indoor environment. During application, air ducts communicating with different indoor areas can be installed at the air outlets or directly communicate with the indoor environment. The indoor air outlet 104 and the recirculating air inlet 102 are arranged on the same side of the housing 100, only occupying the area on the same side of the housing 100 for pipe connection operations, without occupying the areas on other sides of the housing 100, reducing the occupied space of the overall structure of the air handling device.

[0090] To improve the heat utilization rate, referring to Figures 2 to 10 , in an embodiment of the present invention, a total heat exchanger 500 is provided inside the housing 100, and the exhaust air duct 130 and the fresh air duct 110 cross through the total heat exchanger 500.

[0091] In this embodiment, by providing the total heat exchanger 500 and arranging the exhaust air duct 130 and the fresh air duct 110 in a cross manner, the fresh air introduced from the outside can exchange heat with the air discharged from the indoor in the total heat exchanger 500, thereby realizing the recovery and utilization of the heat of the discharged indoor air, reducing the temperature difference between the introduced fresh air and the indoor temperature, reducing the impact of the introduced fresh air on the heat exchanger 600 at the indoor air outlet 103, reducing the energy loss of the heat exchanger 600, and achieving an energy-saving effect.

[0092] The present invention also proposes an indoor air conditioning system, which includes a pressure detection device and an air handling device. The specific structure of the air handling device refers to the above embodiment. Since this indoor air conditioning system adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0093] Specifically, the pressure detection device is used to detect the pressure detection data of the indoor space where the air handling device is located. The number of pressure monitoring devices can be set to one or more according to actual needs. Specifically, when there are multiple pressure detection devices, they can be distributed at different positions within the action space of the air handling device. Specifically, the pressure detection device can be arranged near the area where the exhaust equipment is provided. For example, if there is a range hood in the kitchen, a pressure detection device can be provided in the kitchen; if there is an exhaust fan in the bathroom, a pressure detection device can also be provided in the bathroom.

[0094] Among them, when the pressure value detected by the pressure detection device is a negative pressure value, different negative pressure values correspond to different operating modes of the air handling device. Specifically, it is defined that the negative pressure value includes a first negative pressure value or a second negative pressure value, and the first negative pressure value is less than the second negative pressure value.

[0095] The air handling device includes a first mode or a second mode corresponding to the first negative pressure value, and a third mode corresponding to the second negative pressure value:

[0096] In the first mode, the bypass valve 141 is closed, and the fresh air fan 200 drives outdoor fresh air to enter the fresh air duct 110 from the fresh air inlet 101 and flow to the indoor air outlet 103.

[0097] In the second mode, the bypass valve 141 is opened, the circulation air valve 102a is closed, and the circulation fan 300 drives outdoor fresh air to enter the circulation air duct 120 from the fresh air inlet 101 and flow to the indoor air outlet 103.

[0098] In the third mode, the bypass valve 141 is opened, the circulation air valve 102a is closed, and the fresh air fan 200 and the circulation fan 300 simultaneously drive outdoor fresh air to enter from the fresh air inlet 101 and flow through the fresh air duct 110 and the circulation air duct 120 to the indoor air outlet 103.

[0099] Among them, the air supply volume in the third mode is greater than that in the first mode / the second mode.

[0100] In this embodiment, the air handling device can select a corresponding mode according to the air pressure conditions in different areas or the entire area of the room. Specifically, a negative pressure device for detecting the indoor air pressure can be set indoors, and adjustment is made according to the detection result of the negative pressure device. Optionally, the negative pressure device can be a barometric pressure sensor.

[0101] It can be understood that the pressure conditions in different areas of the room may be different. For example, the airtightness in the living room or bedroom is relatively good, an exhaust fan is usually installed in the bathroom for exhaust, the range hood in the kitchen will exhaust smoke when it is running, or when the doors between the living room, bedroom and bathroom are opened, the air in the living room and bedroom will also be affected by the exhaust fan in the bathroom, resulting in different internal gas pressures in the areas, or there are other exhaust devices. Based on this, in this embodiment, a negative pressure device is set indoors for air pressure detection. The negative pressure device can be set in each area or one can be set in the entire indoor space. By detecting the indoor air pressure, the mode of the air handling device is correspondingly adjusted.

[0102] In the actual application process, for example, when an exhaust fan in the indoor bathroom is turned on and the exhaust air volume is small, the indoor air pressure result detected by the negative pressure device is the first negative pressure value. In this case, the pressure state of the indoor air may be in a slightly negative pressure state, and the air handling device can be operated according to the first mode or the second mode to only use the fresh air fan 200 or the circulation fan 300 to supply a small amount of air to the room, which can appropriately increase the indoor air volume and make the exhaust effect of the exhaust fan better.

[0103] For example, when there are multiple bathrooms in a room and multiple exhaust fans are turned on simultaneously, the exhaust air volume is large. The air pressure result in the room detected by the negative pressure device is the second negative pressure value. In this case, the air pressure state of the indoor air may be in a medium negative pressure or high negative pressure state. Then, the air treatment device can be operated according to the third mode, and at the same time, a large amount of air supply to the room is carried out through the fresh air fan 200 and the circulation fan 300 to ensure the air pressure balance between indoors and outdoors, making the ventilation effect of the exhaust fan better and improving the indoor air quality.

[0104] In the technical solution of the present invention for the indoor air conditioning system, the indoor air pressure condition is detected by the negative pressure device. According to the detected first negative pressure value or second negative pressure value, the air treatment device operates according to the corresponding mode to supply air to the room, achieving the effects of ensuring the air pressure balance between indoors and outdoors, ensuring the ventilation effect, and improving the indoor air quality.

[0105] In an embodiment of the indoor air conditioning system, the air conditioning system further includes a range hood detection device. The range hood detection device is connected to the range hood. The range hood detection device is used to detect the state parameters (such as the on state or off state) and / or power parameters of the range hood.

[0106] In this embodiment, the range hood detection device is a current detection device. In other embodiments, the range hood detection device can also be a device such as a multimeter that directly detects power. The current detection device can characterize the magnitude of the operating power of the range hood and / or whether the range hood is turned on by detecting the operating current of the range hood.

[0107] Specifically, different detected current values of the range hood represent different operating powers of the range hood, and the corresponding operating modes of the air treatment device are different.

[0108] The detection results of the current detection device at least include a first current value and a second current value, and the first current value is less than the second current value;

[0109] The air treatment device includes a first mode or a second mode corresponding to the first current value, and a third mode corresponding to the second current value:

[0110] In the first mode, the bypass valve 141 is closed, and the fresh air fan 200 drives outdoor fresh air to enter the fresh air duct 110 from the fresh air inlet 101 and flow to the indoor air outlet 103;

[0111] In the second mode, the bypass valve 141 is opened, the circulation air valve 102a is closed, and the circulation fan 300 drives outdoor fresh air to enter the circulation air duct 120 from the fresh air inlet 101 and flow to the indoor air outlet 103;

[0112] In the third mode, the bypass valve 141 is opened, the circulating air valve 101a is closed, and the fresh air fan 200 and the circulating fan 300 drive outdoor fresh air to enter from the fresh air inlet 101 simultaneously, and flow through the fresh air duct 110 and the circulating air duct 120 to the indoor air outlet 103;

[0113] Wherein, the air supply volume in the third mode is greater than that in the first mode / the second mode.

[0114] In this embodiment, the air handling device can select a corresponding mode according to the operating conditions of the range hood in the kitchen indoors. Specifically, it can be adjusted according to the detection result of the current detection device of the range hood.

[0115] It can be understood that the working state of the range hood can be determined according to the actual cooking situation of the user in the kitchen. For example, when cooking rice or porridge or boiling water, less fumes are generated. At this time, the range hood can be turned off or set to a low gear, and the internal exhaust fan runs at a low speed, which is characterized as a first current value in the current detection device. In this case, the pressure state of the air in the kitchen may be balanced with the outdoor air pressure or in a slightly negative pressure state. Then, the air handling device can be operated according to the first mode or the second mode to only supplement a small amount of air to the kitchen interior by using only the fresh air fan 200 or the circulating fan 300, which can appropriately increase the air volume in the kitchen and make the exhaust effect of the range hood better.

[0116] For example, when cooking methods such as stir-frying and frying are carried out in the kitchen, more fumes are generated. At this time, the range hood will be set to medium / high gears, and the internal exhaust fan runs at medium / high speeds, which is characterized as a second current value in the current detection structure. In this case, since the range hood needs to run continuously at medium / high speeds and has a large exhaust air volume, it is easy to make the air pressure state in the kitchen form a medium negative pressure or a high negative pressure state. At this time, in order to ensure the suction effect of the range hood, the air handling device operates according to the third mode, and at the same time, a large amount of air is supplemented to the kitchen interior through the fresh air fan 200 and the circulating fan 300 to ensure the air pressure balance inside and outside the kitchen, ensure the smoke exhaust effect of the range hood, and thus improve the air quality in the kitchen.

[0117] In the indoor air conditioning system of the technical solution of the present invention, the current value during the operation of the range hood is detected by the current detection device. According to the detected first current value or second current value, the air handling device operates according to the corresponding mode to supplement air to the kitchen, achieving the effects of ensuring the air pressure balance inside and outside the kitchen, ensuring the smoke exhaust effect of the range hood, and improving the air quality in the kitchen.

[0118] Further, in the embodiment of the present invention, referring to Figure 11The air treatment device further includes a controller, and the above-mentioned exhaust air fan 400, fresh air fan 200, circulation fan 300, bypass valve 141, circulation air valve 102a, air pressure detection device 1, range hood detection device 2, etc. are all connected to the controller here.

[0119] Specifically, referring to Figure 11 , the controller includes: a processor 1001 (such as a CPU), a memory 1002, etc. The above-mentioned components are connected by wire or wireless communication. The memory 1002 can be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. Optionally, the memory 1002 can also be a storage device independent of the aforementioned processor 1001.

[0120] Those skilled in the art can understand that Figure 11 the device structure shown in

[0121] does not constitute a limitation on the device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange different components. Figure 11 As shown in Figure 11 , the memory 1002, as a computer-readable storage medium, may include a computer program. In the device shown in

[0122] An embodiment of the present invention also provides an indoor air conditioning method, which is applied to the above-mentioned air treatment device.

[0123] Referring to Figure 12 , an embodiment of the indoor air conditioning method of the present application is proposed. In this embodiment, the indoor air conditioning method includes:

[0124] Step S10, obtaining the state parameters of the range hood in the space where the air treatment device is located;

[0125] The space where the air treatment device is located specifically refers to the limited space area that can be covered by the air conditioning effect of the air treatment device.

[0126] The air treatment device and the range hood are both located in the same space. This same space can be a large, completely open space (such as the space occupied by the kitchen area), or a large space formed by connecting multiple separated small spaces (such as the connected space formed by the kitchen area, bathroom area, and living room area). The air treatment device and the range hood can be located in the same area or different areas in the space according to actual needs.

[0127] The state parameter here specifically refers to the characteristic parameter representing the start and stop of the smoking machine. The state parameter here can be detected by the above-mentioned smoking machine monitoring module. Specifically, when the operating current of the range hood detected by the smoking machine monitoring module is greater than or equal to the set current threshold, the state parameter can be determined to be in the on state; when the operating current of the range hood detected by the smoking machine detection module is less than the set current threshold, the state parameter can be determined to be in the off state.

[0128] Step S20, when the state parameter is in the on state, control the exhaust fan to turn on, control the bypass valve to turn on, and control the circulation fan to turn on;

[0129] Among them, when the circulation fan is turned on and the bypass valve is turned on, outdoor fresh air enters the space through the circulation air duct, and when the exhaust fan is turned on, indoor air is discharged to the outdoor environment through the exhaust air duct.

[0130] Specifically, when the exhaust fan is turned on, it can operate at a fixed speed or at a changing speed. The operating speed of the exhaust fan can be a pre-set speed or a speed determined based on the operating parameters of the range hood (such as operating power, operating current, fan speed, etc.) and / or actual detected parameters such as indoor oil fume concentration.

[0131] When there is a heat exchange requirement indoors, the circulation fan is turned on and the indoor heat exchanger can be in a heat exchange state. Among them, the heat exchange state of the indoor heat exchanger can be set according to the indoor thermal comfort requirements. Among them, when the indoor temperature is lower than the outdoor temperature, the indoor heat exchanger can be in an evaporation state to reduce the temperature of the fresh air; when the indoor temperature is higher than the outdoor temperature, the indoor heat exchanger can be in a condensation state to increase the temperature of the fresh air.

[0132] When the circulation fan is turned on, its operating speed can be determined according to the indoor air pressure parameter, the operating parameters of the range hood, the fresh air fan speed, and / or the exhaust fan speed, so that the deviation between the exhaust air volume and the intake air volume of the space is less than or equal to the set threshold, and further the intake air volume can be greater than or equal to the exhaust air volume, thereby avoiding negative pressure in the indoor space.

[0133] Outdoor fresh air enters the fresh air duct from the fresh air inlet. When the bypass valve is turned on, the passage opening between the fresh air duct and the circulation air duct is opened, and the fresh air entering the fresh air duct can enter the circulation air duct through this passage opening, be heated and then sent into the room.

[0134] During the process of controlling the exhaust fan to turn on, the bypass valve to turn on, and the circulation fan to turn on, the fresh air fan can be turned on or off according to actual needs.

[0135] An indoor air conditioning method proposed by an embodiment of the present invention is based on an air handling device including an exhaust fan, a fresh air fan, and a circulation fan. When the range hood is in an on state within the action space of the air handling device, through the cooperation of a bypass valve between the circulation air duct and the fresh air duct and the circulation fan, outdoor fresh air can be sent into the indoor space through the circulation air duct to achieve air supply to the indoor space. The fresh air supply can reduce the impact of exhaust on the indoor negative pressure. On this basis, when the exhaust fan is turned on, the air handling device and the range hood can cooperate to exhaust air, which is beneficial to increasing the exhaust volume and accelerating the smoke exhaust efficiency of the indoor environment, thereby effectively improving the smoke exhaust effect when the range hood is operating.

[0136] Furthermore, since the smoke exhaust effect is more likely to be affected by negative pressure when the range hood is turned on in an indoor space with good airtightness, based on this, the indoor air conditioning method in this embodiment can be applied in an indoor space with good airtightness. Before step S10, the airtightness of the action space of the air handling device can be identified first. Specifically, it can be obtained by analyzing the opening and closing conditions of the sealing members at indoor and outdoor passage openings such as doors and windows input by the user. For example, when all doors and windows are closed, it can be considered that the airtightness of the space is good, and then step S10 can be executed. In addition, the fresh air fan and / or the circulation fan of the air handling device can be controlled to operate at a set speed, and the air pressure change rate of the indoor environment can be detected. If the air pressure change rate is greater than the set threshold, it can be considered that the ventilation volume between the action space of the air handling device and its external space is extremely small, and the airtightness of the space is good, and then step S10 can be executed. Based on this, a better smoke exhaust effect can be ensured when the range hood is turned on in an indoor space with good airtightness.

[0137] Furthermore, when the circulation fan is turned on, the circulation air valve can be opened or closed. Specifically, in this embodiment, before controlling the circulation fan to turn on, the circulation air valve can be controlled to reduce the opening degree. Specifically, here reducing the opening degree can be reduced to less than the set threshold, or the circulation air valve can be directly closed. Among them, it can be determined whether to open or close the circulation air valve based on the current oil fume concentration in the indoor space and the indoor-outdoor temperature difference. For example, when the oil fume concentration is less than the set threshold and the indoor-outdoor temperature is less than the set temperature, the circulation air valve can be controlled to open; otherwise, the circulation air valve can be controlled to close.

[0138] Reducing the opening degree of the circulation air valve can, on the one hand, reduce the air with oil fume participating in the internal circulation, enable the oil fume to be quickly discharged outdoors through the exhaust fan and the range hood, and avoid pollution inside the air handling device; in addition, the air entering the circulation fan is reduced, enabling the indoor heat exchanger to have sufficient heat exchange capacity to heat the fresh air, and at the same time enabling the fresh air volume drawn in when the circulation fan is operating to ensure a sufficiently large fresh air volume to make up for the exhaust volume to prevent indoor negative pressure while ensuring the heat exchange effect of the fresh air.

[0139] Further, based on the above embodiments, another embodiment of the indoor air conditioning method of the present application is proposed. In this embodiment, referring to Figure 13 , the step of controlling the circulation fan to turn on includes:

[0140] Step S11, obtain the total exhaust volume of the space;

[0141] The total exhaust volume here can be specifically obtained by detecting the operating parameters of the equipment participating in the indoor and outdoor air circulation in the space and analyzing based on the detected operating parameters.

[0142] In this embodiment, referring to Figure 14 , the step of obtaining the total exhaust volume of the space includes:

[0143] Step S111, obtain the first exhaust volume of the range hood, obtain the second exhaust volume of the exhaust fan, and obtain the exhaust volume correction parameter corresponding to the fresh air fan;

[0144] In this embodiment, the process of obtaining the first exhaust volume is as follows: obtain the power parameter of the range hood; determine the first exhaust volume according to the power parameter. The power parameter is specifically a characteristic parameter representing the power of the range hood, which can be the detected operating current value of the range hood or the detected power value of the range hood, etc. The larger the power parameter, the larger the exhaust volume of the range hood. The corresponding relationship between the power parameter and the first exhaust volume can be preset, which can be a calculation relationship, a mapping relationship, etc. Based on this corresponding relationship, the exhaust volume corresponding to the currently obtained power parameter can be determined as the first exhaust volume. Here, the exhaust volume of the range hood is evaluated through the power parameter of the range hood, so as to ensure the accuracy of the obtained exhaust volume of the range hood. It should be noted that in other embodiments, when the state parameter is in the on state, all the fans in the air handling equipment can also be controlled to stop running first, and on this basis, the air pressure change parameters in the indoor environment (such as the air pressure change amount, air pressure change rate, air pressure change curve, etc.) are detected, and the first exhaust volume is determined based on the detected air pressure change parameters.

[0145] The second exhaust volume can be obtained by analyzing the operating speed of the exhaust fan. The higher the speed of the exhaust fan, the larger the second exhaust volume. For example, if the operating speed of the exhaust fan is N, then its exhaust volume P = a * N, where a is a preset constant.

[0146] The exhaust volume correction parameter can be in the form of an exhaust volume correction ratio or an exhaust volume correction range, etc. For example, the exhaust volume correction parameter can be the exhaust volume correction range of the total exhaust volume corresponding to the exhaust fan and the range hood. The exhaust volume correction parameter can also include the correction ratios corresponding to the first exhaust volume and the second exhaust volume respectively. Different operating states of the fresh air fan correspond to different exhaust volume correction parameters. Specifically, different exhaust volume correction parameters correspond to when the fresh air fan is turned on and when it is turned off respectively. Different rotational speeds of the fresh air fan when it is turned on correspond to different exhaust volume correction parameters respectively. Specifically, obtain the operating rotational speed of the fresh air fan; determine the exhaust volume correction parameter according to the operating rotational speed; wherein, the exhaust volume correction parameter shows an increasing trend as the operating rotational speed increases. In this embodiment, the exhaust volume correction parameter is the exhaust volume correction range. When the operating rotational speed of the fresh air fan is 0 (i.e., the fresh air fan is turned off), the exhaust volume correction range can be 0; when the operating rotational speed of the fresh air fan is greater than 0, the exhaust volume correction range is greater than 0 and has a positive correlation quantitative relationship with the operating rotational speed. Based on the pre-set corresponding relationship between the rotational speed and the correction parameter, the exhaust volume correction parameter corresponding to the current rotational speed of the fresh air fan can be determined. Here, the rotational speed of the fresh air fan is combined to correct the exhaust volume corresponding to the exhaust fan and the range hood, so as to ensure the accuracy of the determined total exhaust volume.

[0147] Step S112, determine the total exhaust volume according to the first exhaust volume, the second exhaust volume and the exhaust volume correction parameter.

[0148] The result obtained by correcting the first exhaust volume and the second exhaust volume based on the exhaust volume correction parameter is used as the total exhaust volume.

[0149] Specifically, the exhaust volume correction parameter is the exhaust volume correction range. There is the following quantitative relationship between the first exhaust volume, the second exhaust volume, the exhaust volume correction parameter and the total exhaust volume: First exhaust volume + Second exhaust volume - Exhaust volume correction parameter = Total exhaust volume. Based on this quantitative relationship, the total exhaust volume of the space can be calculated through the first exhaust volume, the second exhaust volume and the exhaust volume correction parameter.

[0150] Step S12, determine the target rotational speed of the circulation fan according to the total exhaust volume;

[0151] Through the collection and analysis of a large amount of data, the corresponding relationship between the rotational speed of the circulation fan and its corresponding air output can be established in advance. Specifically, the determined total exhaust volume can be used as the air output corresponding to the circulation fan, or the sum of the determined total exhaust volume and the set exhaust volume can be used as the air output corresponding to the circulation fan. Substituting the obtained air output into this corresponding relationship, the result obtained can be used as the target rotational speed of the circulation fan.

[0152] Further, the corresponding relationship here can be obtained based on the state of the current circulation air valve. There are different corresponding relationships between the rotational speed and the air discharge volume when the circulation air valve is closed and when it is open, and there are different corresponding relationships between the rotational speed and the air discharge volume when the circulation air valve is opened at different opening degrees. Based on this, the current opening degree of the circulation air valve can be obtained, and the corresponding corresponding relationship can be obtained based on the opening degree. The target rotational speed corresponding to the total exhaust volume is determined based on the obtained corresponding relationship.

[0153] Step S13, control the operation of the circulation fan according to the target rotational speed; when the circulation fan operates at the target rotational speed, the air intake volume of the space is greater than or equal to the total exhaust volume.

[0154] In this embodiment, by combining the total exhaust volume of the current space to determine the operating rotational speed of the circulation fan, it can be ensured that when the range hood is turned on, by adjusting the rotational speed of the circulation fan, there is sufficient air intake in the space to keep the space in a constant pressure or slightly positive pressure state, so that the cooperation between the range hood and the exhaust fan can quickly extract the indoor oil fume outdoors, improve the exhaust effect, and ensure the indoor environmental quality. Among them, by combining the exhaust conditions of the range hood and the exhaust fan and the influence of the fresh air fan on the exhaust volume to determine the total exhaust volume of the space, it is beneficial to ensure the accuracy of the determined total exhaust volume, and can further ensure that the rotational speed of the circulation fan determined based on the total exhaust volume can keep the indoor space in a constant pressure or slightly positive pressure state, and further improve the exhaust effect.

[0155] Further, based on any of the above embodiments, another embodiment of the indoor air conditioning method of the present application is proposed. In this embodiment, the housing is provided with a fresh air inlet, a fresh air duct independent of the circulation air duct is formed in the housing, the fresh air duct communicates the fresh air inlet with the indoor air outlet, a heat exchanger is provided in the circulation air duct, the exhaust air duct and the fresh air duct cross through the total heat exchanger, and the fresh air fan can be turned on synchronously when the above components are turned on. Refer to Figure 15 and the step S20 includes:

[0156] Step S20a, control the exhaust fan to be turned on, control the bypass valve to be turned on, control the circulation fan to be turned on, and control the fresh air fan to be turned on;

[0157] When the circulation fan and the fresh air fan are turned on, outdoor fresh air is sent into the indoor space through the circulation air duct and the fresh air duct.

[0158] Specifically, when a heat exchanger is also provided in the fresh air duct, the fresh air after exchanging heat with the air in the exhaust fan can be further exchanged through the heat exchanger and then sent into the indoor space, so that the temperature of the fresh air can be closer to the indoor temperature.

[0159] Among them, when the fresh air fan is turned on, it can operate at a fixed speed or at a variable speed. The operating speed of the fresh air fan can be a pre-set speed, or a speed determined based on the operating parameters of the range hood (such as operating power, operating current, fan speed, etc.), the indoor oil fume concentration, the exhaust fan speed and other actually detected parameters. Specifically, in this embodiment, the first speed of the exhaust fan is obtained, and the indoor environmental temperature and the set comfortable temperature are obtained; the temperature deviation between the indoor environmental temperature and the set comfortable temperature is determined; the speed ratio between the exhaust fan and the fresh air fan is determined according to the temperature deviation; according to the speed ratio, the first speed and the second speed of the fresh air fan; the second speed is less than the first speed; the fresh air fan is controlled to operate at the second speed. Among them, the temperature deviation specifically refers to the absolute value of the difference between the two temperatures. The greater the temperature deviation, the greater the speed ratio, and the greater the speed ratio, the greater the deviation between the two speeds. On this basis, the speed of the fresh air fan is smaller than that of the exhaust fan, so that the air in the exhaust air duct can carry enough heat exchange capacity to heat exchange the fresh air, so as to ensure that the fresh air temperature is closer to the current indoor environmental temperature.

[0160] When the fresh air fan is turned on, the operating speed of the circulation fan can be determined by combining the operating parameters of the range hood, the operating speed of the exhaust fan and the operating speed of the fresh air fan, so that the sum of the air supply volume of the circulation fan and the air supply volume of the fresh air fan is equal to the sum of the exhaust volume of the exhaust fan and the exhaust volume of the range hood.

[0161] In this embodiment, when the circulation fan, the bypass valve and the exhaust fan are turned on, the fresh air fan is also turned on to extract fresh air. On the one hand, it can increase the fresh air volume input into the room to improve the air supplement effect. On the other hand, it can reduce the energy consumption of the air treatment equipment during the fresh air temperature adjustment, so as to achieve a better energy-saving effect.

[0162] Further, before the step of controlling the fresh air fan to turn on, it further includes: when the status parameter is in the on state, obtaining the air pressure change rate in the space; the air pressure change rate is the amplitude of the decrease in the air pressure in the space per unit time; when the air pressure change rate is greater than the set change rate, execute the step of controlling the fresh air fan to turn on. The size of the set change rate can be set according to the actual situation. The set change rate can be a fixed parameter set by the system by default, or can be obtained by analyzing the degree of airtightness of the space based on the user-set parameters. The greater the degree of airtightness, the smaller the value of the set change rate. When the air pressure change rate is greater than the set change rate, it indicates that the air pressure in the current indoor space drops rapidly under the action of the range hood, and the negative pressure risk is relatively large. At this time, in addition to turning on the circulation fan, the exhaust fan and the bypass valve, the fresh air fan is also turned on, which is beneficial to increasing the air intake volume of the space, effectively avoiding the occurrence of negative pressure, ensuring better smoke exhaust effect and guaranteeing the indoor environmental quality. It should be noted that the turning on of the fresh air fan and the turning on of the circulation fan, the exhaust fan and the bypass valve can be executed successively or simultaneously. Specifically, when the status parameter of the range hood is obtained as the on state, the circulation fan, the exhaust fan and the bypass valve can be controlled to turn on for a set duration first, and the air pressure change rate here is detected after the set duration. When the detected air pressure change rate is greater than the set change rate, the fresh air fan can be turned on to make up for the insufficient air supply capacity of the circulation fan and further avoid the occurrence of negative pressure.

[0163] In addition, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the relevant steps of any one of the above indoor air conditioning methods are implemented.

[0164] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or system. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or system including the element.

[0165] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages and disadvantages of the embodiments.

[0166] Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above and includes several instructions for causing a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of the present invention.

[0167] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An indoor air conditioning method, based on an air handling unit, characterized in that, the air handling unit includes a housing, a circulation fan, an exhaust fan, a fresh air fan, a circulation air valve and a bypass valve. The housing is provided with an indoor air outlet, an indoor exhaust outlet and an outdoor exhaust outlet. An exhaust air duct and a circulation air duct are formed inside the housing. The circulation air duct connects the circulation air inlet and the indoor air outlet. The exhaust air duct connects the indoor exhaust outlet and the outdoor exhaust outlet. The fresh air fan is arranged in the fresh air duct. The circulation fan is arranged in the circulation air duct. An exhaust fan is arranged in the exhaust air duct. The housing is provided with a fresh air inlet. A fresh air duct independent of the circulation air duct is formed inside the housing. The fresh air duct connects the fresh air inlet and the indoor air outlet. The exhaust air duct and the fresh air duct cross and pass through a total heat exchanger. The indoor air conditioning method includes the following steps: Obtain the state parameters of the range hood in the action space of the air handling unit; When the state parameter is in the on state, control the exhaust fan to turn on, control the bypass valve to turn on, and control the circulation fan to turn on; Wherein, when the circulation fan is turned on and the bypass valve is turned on, outdoor fresh air enters the action space through the circulation air duct. When the exhaust fan is turned on, indoor air is discharged to the outdoor environment through the exhaust air duct; Including a first mode, the bypass valve is closed, and the fresh air fan drives outdoor fresh air to enter the fresh air duct from the fresh air inlet and flow to the indoor air outlet; It further includes a second mode, the bypass valve is opened, the circulation air valve is closed, and the circulation fan drives outdoor fresh air to enter the circulation air duct from the fresh air inlet and flow to the indoor air outlet; When the range hood operates at a low speed, the first mode or the second mode is turned on; When the range hood operates at a medium / high speed, the third mode is turned on. A part of the air flow flows from the fresh air duct to the indoor air outlet, and another part of the air flow flows from the circulation air duct to the indoor air outlet. At this time, the fresh air introduction amount is jointly driven by the fresh air fan and the circulation fan.

2. The indoor air conditioning method according to claim 1, characterized in that, the circulation air inlet is provided with the circulation air valve. Before the step of controlling the circulation fan to turn on, it further includes: When the state parameter is in the on state, control the circulation air valve to reduce the opening degree.

3. The indoor air conditioning method according to claim 1, characterized in that, the step of controlling the circulation fan to turn on includes: Obtain the total exhaust air volume of the action space; Determine the target speed of the circulation fan according to the total exhaust air volume; Control the circulation fan to operate according to the target speed; when the circulation fan operates at the target speed, the air intake volume of the action space is greater than or equal to the total exhaust air volume.

4. The indoor air conditioning method according to claim 3, characterized in that, the step of obtaining the total exhaust air volume of the action space includes: Obtain the first exhaust volume of the range hood, obtain the second exhaust volume of the exhaust fan, and obtain the exhaust volume correction parameter corresponding to the fresh air fan; Determine the total exhaust volume according to the first exhaust volume, the second exhaust volume, and the exhaust volume correction parameter.

5. The indoor air conditioning method according to claim 4, characterized in that the step of obtaining the first exhaust volume of the range hood includes: Obtain the power parameter of the range hood; Determine the first exhaust volume according to the power parameter.

6. The indoor air conditioning method according to claim 4, characterized in that the step of obtaining the exhaust volume correction parameter corresponding to the fresh air fan includes: Obtain the operating speed of the fresh air fan; Determine the exhaust volume correction parameter according to the operating speed; wherein, the exhaust volume correction parameter increases as the operating speed increases.

7. The indoor air conditioning method according to any one of claims 1 to 6, characterized in that a heat exchanger is provided in the circulating air duct, and during the process of controlling the exhaust fan to be turned on, the bypass valve to be turned on, and the circulating fan to be turned on, the fresh air fan is controlled to be turned on; When the circulating fan and the fresh air fan are turned on, outdoor fresh air is sent into the indoor space through the circulating air duct and the fresh air duct.

8. The indoor air conditioning method according to claim 7, characterized in that before the step of controlling the fresh air fan to be turned on, further includes: When the state parameter is in the on state, obtain the air pressure change rate in the action space; When the air pressure change rate is greater than the set change rate, execute the step of controlling the fresh air fan to be turned on.

9. An indoor air conditioning system, characterized in that the indoor air conditioning system includes an air treatment device and a range hood detection device, the range hood detection device is used to detect the state parameter of the range hood, and the air treatment device includes: A housing, the housing is provided with an indoor air outlet, an indoor air exhaust port, and an outdoor air exhaust port, and an exhaust air duct and a circulating air duct are formed in the housing, the circulating air duct communicates the circulating air inlet with the indoor air outlet, and the exhaust air duct communicates the indoor air exhaust port and the outdoor air exhaust port; A circulating fan is provided in the circulating air duct; an exhaust fan is provided in the exhaust air duct; A controller, the range hood detection device, the circulating fan, and the exhaust fan are all connected to the controller, and the controller includes: a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the computer program is executed by the processor, it realizes the steps of the indoor air conditioning method according to any one of claims 1 to 8.

10. The indoor air conditioning system according to claim 9, characterized in that the circulating air inlet is provided with the circulating air valve, and the circulating air valve is connected to the controller; The housing is provided with a fresh air inlet, and a fresh air duct independent of the circulating air duct is formed in the housing, and the fresh air duct communicates the fresh air inlet with the indoor air outlet; A total heat exchanger is provided inside the housing, and the exhaust air duct and the fresh air duct cross and pass through the total heat exchanger; the indoor air conditioning system further includes a pressure detection device for detecting the pressure detection data of the space where the air handling device is located, and the pressure detection device is connected to the controller.

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