A fresh air assembly and air conditioner

Abstract

The application provides a fresh air assembly and an air conditioner, and relates to the technical field of air conditioners. The fresh air assembly comprises a flow path switching device, a supply fan and a total heat exchanger. The flow path switching device is respectively provided with a first air duct, a second air duct, a third air duct and a fourth air duct. The first air duct is used for connecting an outdoor environment. The second air duct is connected with a suction end of the supply fan. The third air duct is used for connecting an indoor environment. A supply end of the supply fan is connected with the fourth air duct through the total heat exchanger. The flow path switching device is configured to connect the first air duct and the fourth air duct in a first working state, and connect the second air duct and the third air duct. The flow path switching device is also configured to connect the first air duct and the second air duct in a second working state, and connect the third air duct and the fourth air duct. The fresh air assembly provided by the application can reduce the energy consumption of the air conditioner, reduce the installation cost and improve the aesthetic appearance of the residence.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioning technical field, and in particular, relates to a fresh air assembly and an air conditioner. BACKGROUND

[0002] At present, the air conditioner on the market is often configured with a fresh air assembly. When the fresh air assembly is running for fresh air exchange in the working process of the air conditioner, the air with a large temperature difference between the outdoor and indoor is introduced into the indoor, which leads to an increase in the energy consumption of the air conditioner. Moreover, at least one air inlet and at least one air outlet need to be opened on the house during installation, which is high in installation cost and affects the appearance of the house. SUMMARY

[0003] The problem solved by the present application is that the fresh air assembly increases the energy consumption of the air conditioner and leads to an increase in the installation cost of the air conditioner and affects the appearance of the house.

[0004] To solve the above problems, the present application provides a fresh air assembly which can reduce the energy consumption of the air conditioner, reduce the installation cost, and improve the appearance of the house.

[0005] The embodiment of the present application provides a fresh air assembly, which comprises a flow path switching device, a supply fan and a total heat exchanger. The flow path switching device is respectively provided with a first air duct, a second air duct, a third air duct and a fourth air duct. The first air duct is used for communicating with the outdoor environment. The second air duct is communicated with the air suction end of the supply fan. The third air duct is used for communicating with the indoor environment. The air supply end of the supply fan is communicated with the fourth air duct through the total heat exchanger.

[0006] The flow path switching device is configured to conduct the first air duct and the fourth air duct in the first working state, and conduct the second air duct and the third air duct. The flow path switching device is also configured to conduct the first air duct and the second air duct in the second working state, and conduct the third air duct and the fourth air duct.

[0007] In actual application, when the flow path switching device is switched to the first working state, the supply fan can exhaust the indoor air to the outdoor through the total heat exchanger to realize exhaust, and the total heat exchanger realizes heat exchange with the indoor air in the exhaust process. When the flow path switching device is switched to the second working state, the supply fan can send the outdoor air into the indoor through the total heat exchanger to realize air intake, and the total heat exchanger realizes heat exchange in the air intake process, thereby realizing preheating or precooling of the air intake by using the exhaust heat. After the outdoor air enters the indoor, the temperature difference between the outdoor air and the indoor air is small, which reduces the energy consumption of the air conditioner. Moreover, the exhaust and the air intake are realized through the same flow path, so that the first air duct or the third air duct can be connected to the strong hole of the air conditioner in the installation process, thereby avoiding additional excavation of the air inlet and the air outlet on the wall.

[0008] In an optional embodiment, the flow path switching device is configured to switch among the first working state, the second working state, and a third working state, in the third working state, the first air duct, the second air duct, the third air duct, and the fourth air duct are not in communication with each other.

[0009] The flow path switching device is further configured with a third working state, in the third working state, the first air duct is not in communication with the second air duct, the third air duct, and the fourth air duct, so as to block the fresh air flow path and prevent natural convection of outdoor air and indoor air when fresh air stops.

[0010] In an optional embodiment, the flow path switching device comprises a housing and a valve core, the housing is internally provided with a switching chamber, the first air duct, the second air duct, the third air duct, and the fourth air duct are all arranged on the housing and in communication with the switching chamber, and the valve core is accommodated in the switching chamber and is used to rotate to a plurality of angular positions in the switching chamber, so as to switch the flow path switching device among the first working state, the second working state, and the third working state.

[0011] In an optional embodiment, the first air duct, the second air duct, the third air duct, and the fourth air duct are sequentially and spacedly arranged in the same horizontal circumferential direction of the housing, and the first air duct and the third air duct are oppositely arranged, and the second air duct and the fourth air duct are oppositely arranged.

[0012] In an optional embodiment, the total heat exchanger is provided with an air inlet interface and an air outlet interface, the air inlet interface is connected with the air supply end of the air supply fan, the air outlet interface is connected with the fourth air duct, the air inlet interface and the air outlet interface are both directed to the horizontal direction, and the air inlet interface and the air outlet interface are different in height in the vertical direction.

[0013] The air inlet interface and the air outlet interface of the total heat exchanger are arranged at different vertical heights, so that the vertical space can be reasonably utilized during the installation and connection of the air supply fan and the flow path switching device, and the overall structure can avoid occupying too much horizontal area.

[0014] In an optional embodiment, the air suction end of the air supply fan is provided with a wind collecting hood, the flow path switching device is stacked on the wind collecting hood, and the wind collecting hood is connected with the second air duct.

[0015] The flow path switching device is stacked on the wind collecting hood, and the wind collecting hood is connected with the second air duct, so that the setting of an intermediate pipe section is avoided, and the compactness of the overall structure is further improved.

[0016] In an optional embodiment, the fresh air assembly further comprises a filter, which is arranged at the air suction end of the air blower.

[0017] The filter arranged at the air suction end of the air blower can filter the air flow entering the air blower and the total heat exchanger, avoid damaging the air blower, and ensure the heat exchange effect of the total heat exchanger.

[0018] The application further provides an air conditioner, which comprises an air conditioner main body, a controller and the fresh air assembly. The fresh air assembly comprises a flow path switching device, an air blower and a total heat exchanger. The flow path switching device is respectively provided with a first air duct, a second air duct, a third air duct and a fourth air duct. The first air duct is used for connecting the outdoor environment. The second air duct is connected with the air suction end of the air blower. The third air duct is used for connecting the indoor environment. The air supply end of the air blower is connected with the fourth air duct through the total heat exchanger. The flow path switching device is configured to conduct the first air duct and the fourth air duct and conduct the second air duct and the third air duct in a first working state. The flow path switching device is further configured to conduct the first air duct and the second air duct and conduct the third air duct and the fourth air duct in a second working state. The flow path switching device, the air blower and the total heat exchanger are arranged on the air conditioner main body. The controller is electrically connected with the air blower and the flow path switching device. The controller is used for controlling the air blower to start or stop and is used for controlling the flow path switching device to switch the working state.

[0019] In actual application, when the controller controls the flow path switching device to switch to the first working state, the air blower can discharge the indoor air to the outdoor environment through the total heat exchanger to realize exhaust and realize heat exchange between the total heat exchanger and the indoor air during the exhaust process. When the controller controls the flow path switching device to switch to the second working state, the air blower can send the outdoor air into the indoor environment through the total heat exchanger to realize air intake and realize heat exchange between the air blower and the total heat exchanger during the air intake process, thereby realizing preheating or precooling of the air intake process by using the exhaust heat. The outdoor air has a small temperature difference with the indoor air after entering the indoor environment, thereby reducing the energy consumption of the air conditioner. Moreover, the exhaust and the air intake are realized through the same flow path, so that the first air duct or the third air duct can be connected with the strong hole of the air conditioner during installation, thereby avoiding additional excavation of the air inlet and the air outlet on the wall.

[0020] In an optional embodiment, the air conditioner further comprises a first detection device. The controller is electrically connected with the first detection device. The first detection device is used for detecting the air quality of the indoor environment. The controller is used for controlling the air blower to start or stop according to the detection result of the first detection device.

[0021] When the first detection device detects that the indoor air quality is below a preset threshold, the controller starts the air supply fan and switches the flow path switching device between a first and a second operating state to run the fresh air function and improve indoor air quality. When the first detection device detects that the indoor air quality reaches another preset threshold, the controller stops the air supply fan and switches the flow path switching device to a third operating state to shut down the fresh air function. This achieves automatic control of the air conditioner's fresh air function, improving the user experience.

[0022] In an optional embodiment, the air conditioner further includes a second detection device, a third detection device, and a fourth detection device. The controller is electrically connected to the second detection device, the third detection device, and the fourth detection device, respectively. The second detection device is used to detect the temperature of the total heat exchanger, the third detection device is used to detect the indoor ambient temperature, and the fourth detection device is used to detect the outdoor ambient temperature. The controller is used to control the flow path switching device to switch its operating state based on the detection results of the second detection device, the third detection device, and the fourth detection device.

[0023] During the exhaust process, when the second detection device detects that the temperature of the total heat exchanger is close to the indoor air temperature detected by the third detection device, the controller controls the flow path switching device to switch from the first operating state to the second operating state, i.e., switching from exhaust to intake. When the temperature of the total heat exchanger detected by the second detection device is close to the outdoor air temperature detected by the fourth detection device, the controller controls the flow path switching device to switch from the second operating state to the first operating state, i.e., switching from intake to exhaust. The controller automatically switches between exhaust and intake based on the indoor temperature, outdoor temperature, and the temperature of the total heat exchanger to ensure the heat exchange performance of the total heat exchanger, achieve effective preheating or precooling of the intake air, and reduce the energy consumption of the air conditioner. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an air conditioner provided in an embodiment of the present invention;

[0025] Figure 2 A structural block diagram of an air conditioner provided in an embodiment of the present invention;

[0026] Figure 3 A connection block diagram of an air conditioner provided in an embodiment of the present invention;

[0027] Figure 4 for Figure 1 Exploded view of the structure of the fresh air system component;

[0028] Figure 5 for Figure 4 A schematic diagram of the internal structure of the flow path switching device in its first working state;

[0029] Figure 6 A structural block diagram of the fresh air assembly when the flow path switching device is in the first working state;

[0030] Figure 7 A structural block diagram of the fresh air assembly when the flow path switching device is in the first working state; Figure 4 An internal structure schematic diagram of the flow path switching device in the second working state;

[0031] Figure 8 A structural block diagram of the fresh air assembly when the flow path switching device is in the second working state;

[0032] Figure 9 An internal structure schematic diagram of the flow path switching device in the second working state. Figure 4 An internal structure schematic diagram of the flow path switching device in the third working state.

[0033] Explanation of reference signs:

[0034] 10 - air conditioner; 11 - air conditioner main body; 12 - controller; 13 - first detection device; 14 - second detection device; 15 - third detection device; 16 - fourth detection device; 100 - fresh air assembly; 110 - flow path switching device; 111 - first air duct; 112 - second air duct; 113 - third air duct; 114 - fourth air duct; 115 - housing; 116 - valve core; 130 - air supply fan; 131 - air collecting cover; 150 - total heat exchanger; 151 - air inlet; 153 - air outlet; 170 - filter. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0036] In the prior art, in the case of applying the air conditioner to fresh air in the indoor environment, since the fresh air leads the air in the outdoor environment into the indoor environment, and leads the air in the indoor environment out of the outdoor environment. Therefore, due to the difference in temperature and humidity of the outdoor environment and other factors, the fresh air may affect the air conditioning of the indoor environment. In order to ensure the air conditioning of the indoor environment, the air conditioner increases the operating power, thereby causing the air conditioner to increase the energy consumption due to the fresh air. In addition, since the fresh air function needs to open the air inlet and outlet for fresh air on the wall of the residence, it not only increases the cost but also greatly affects the appearance.

[0037] In order to solve the technical problem, please refer to Figure 1 , Figure 2 and Figure 3 The embodiment provides an air conditioner 10.

[0038] The air conditioner 10 provided by the embodiment comprises an air conditioner main body 11, a controller 12 and a fresh air assembly 100, the controller 12 and the fresh air assembly 100 are arranged on the air conditioner main body 11, the controller 12 is electrically connected with the fresh air assembly 100, and the controller 12 is used for controlling the fresh air assembly 100 to run or stop the fresh air function. In the embodiment, the air conditioner main body 11 comprises an outdoor unit and an indoor unit, the fresh air assembly 100 is arranged on the outdoor unit, and the controller 12 is arranged on a control panel of the indoor unit. In other embodiments, the fresh air assembly 100 can also be arranged on the indoor unit.

[0039] The fresh air assembly 100 comprises a flow path switching device 110, a supply fan 130, a total heat exchanger 150 and a filter 170, a supply end of the supply fan 130 is sequentially connected with the total heat exchanger 150, the flow path switching device 110, the filter 170 and a suction end of the supply fan 130 to form a closed loop, the total heat exchanger 150 is additionally communicated with an outdoor environment and an indoor environment, and in a moving state of the supply fan 130, the total heat exchanger 150 is switched to realize that indoor air is exchanged by the total heat exchanger 150 and then discharged to the outdoor, or outdoor air is exchanged by the total heat exchanger 150 and then input to the indoor, to realize switching of exhaust and intake.

[0040] In the embodiment, under the control of the controller 12, the flow path switching device 110 can be switched between a first working state, a second working state and a third working state. When the flow path switching device 110 is switched to the first working state, the supply fan 130 exchanges indoor air by the total heat exchanger 150 and then discharges the indoor air to the outdoor to realize exhaust. When the flow path switching device 110 is switched to the second working state, the supply fan 130 exchanges outdoor air by the total heat exchanger 150 and then inputs the outdoor air to the indoor to realize intake. When the flow path switching device 110 is switched to the third working state, the fresh air flow path is cut off to prevent natural convection of outdoor air and indoor air from occurring when the fresh air is stopped.

[0041] The air conditioner 10 provided by the embodiment further comprises a first detection device 13, a second detection device 14, a third detection device 15 and a fourth detection device 16. The first detection device 13 is arranged in the indoor environment and is used for detecting air quality of the indoor environment. In actual application, a carbon dioxide sensor can be used to detect carbon dioxide concentration of indoor air. The second detection device 14, the third detection device 15 and the fourth detection device 16 all adopt temperature sensors. The second detection device 14 is used for detecting temperature of the total heat exchanger 150, the third detection device 15 is used for detecting indoor environment temperature, and the fourth detection device 16 is used for detecting outdoor environment temperature.

[0042] The controller 12 is electrically connected with the first detecting device 13, the second detecting device 14, the third detecting device 15, the fourth detecting device 16, the flow path switching device 110 and the air blower 130 respectively, and is configured to control the air blower 130 to start or stop according to the detection result of the first detecting device 13, and control whether the flow path switching device 110 switches to the third working state, and is configured to control the flow path switching device 110 to switch between the first working state and the second working state according to the detection results of the second detecting device 14, the third detecting device 15 and the fourth detecting device 16.

[0043] Specifically, when the detection result of the first detecting device 13 indicates that the indoor air quality is too low, the controller 12 controls the air blower 130 to start, and controls the flow path switching device 110 to switch to the first working state to exhaust. During the exhaust process, when the second detecting device 14 detects that the temperature of the total heat exchanger 150 approaches the indoor air temperature detected by the third detecting device 15, the controller 12 controls the flow path switching device 110 to switch from the first working state to the second working state, i.e., from exhaust to intake.

[0044] During the intake process, when the temperature of the total heat exchanger 150 detected by the second detecting device 14 approaches the outdoor air temperature detected by the fourth detecting device 16, the controller 12 controls the flow path switching device 110 to switch from the second working state to the first working state, i.e., from intake to exhaust, and so on, so as to ensure the heat exchange performance of the total heat exchanger 150, realize effective preheating or precooling of the intake air, and reduce the energy consumption of the air conditioner 10.

[0045] During the ventilation process, when the detection result of the first detecting device 13 indicates that the indoor air quality meets the standard, the controller 12 controls the air blower 130 to stop, and controls the flow path switching device 110 to switch from the first working state or the second working state to the third working state, so as to cut off the flow path and prevent natural convection of the outdoor air and the indoor air.

[0046] In fact, the air conditioner 10 provided by the embodiment, the controller 12 needs to consider the indoor refrigeration or heating effect when controlling the operation and stop of the fresh air assembly 100. In order to prevent natural air intake during the off period of the fresh air function, the controller 12 controls the flow path switching device 110 to keep the third working state. When the detection result of the first detection device 13 indicates that the indoor air quality is too low, and the difference between the indoor air temperature detected by the third detection device 15 and the set temperature of the indoor unit is less than 3°C, and the fresh air assembly 100 has not been started within the previous 60 minutes, the controller 12 controls the fresh air assembly 100 to start air exchange, that is, controls the air supply fan 130 to start moving, controls the flow path switching device 110 to switch from the third working state to the first working state for exhaust, and switches the exhaust and intake according to the detection results of the second detection device 14, the third detection device 15 and the fourth detection device 16.

[0047] Please refer to Figure 4 The flow path switching device 110 is respectively provided with a first air duct 111, a second air duct 112, a third air duct 113 and a fourth air duct 114. The first air duct 111 is used to communicate with the outdoor environment. The second air duct 112 communicates with the suction end of the air supply fan 130. The third air duct 113 communicates with the indoor unit through a pipeline. In the air intake process, the outdoor air is introduced into the indoor unit for heat exchange and then enters the indoor environment. The air supply end of the air supply fan 130 communicates with the fourth air duct 114 through the total heat exchanger 150.

[0048] Please refer to Figure 5 and Figure 6 The flow path switching device 110 includes a housing 115 and a valve core 116. The housing 115 is internally provided with a switching chamber. The first air duct 111, the second air duct 112, the third air duct 113 and the fourth air duct 114 are all arranged on the housing 115 and communicate with the switching chamber. The valve core 116 is accommodated in the switching chamber and is used to rotate to multiple angular positions in the switching chamber, so as to switch the flow path switching device 110 between the first working state, the second working state and the third working state.

[0049] In the embodiment, the first air duct 111, the second air duct 112, the third air duct 113 and the fourth air duct 114 are sequentially and spacedly arranged on the same horizontal circumference of the housing 115. The first air duct 111 and the third air duct 113 are oppositely arranged, and the second air duct 112 and the fourth air duct 114 are oppositely arranged. When the flow path switching device 110 is in the first working state, the valve core 116 is rotated to, for example, Figure 5At the indicated angles, the first air duct 111 and the fourth air duct 114 are connected within the switching chamber, and the second air duct 112 and the third air duct 113 are connected. Under the action of the blower 130, indoor air flows into the flow path switching device 110 through the third air duct 113 and flows out through the second air duct 112. It then passes through the filter 170, the blower 130, and the total heat exchanger 150 in sequence, before entering the flow path switching device 110 through the fourth air duct 114, and finally flows out to the outdoor environment through the first air duct 111 to achieve exhaust.

[0050] Please refer to the following: Figure 7 and Figure 8 When the flow path switching device 110 is in the second working state, the valve core 116 rotates to the position shown in the figure. Figure 7 At the indicated angles, the first air duct 111 and the second air duct 112 are connected within the switching chamber, and the third air duct 113 and the fourth air duct 114 are connected. Under the action of the blower 130, outdoor air flows into the flow path switching device 110 through the first air duct 111 and flows out through the second air duct 112. It then passes through the filter 170, the blower 130, and the total heat exchanger 150 in sequence. It then enters the flow path switching device 110 through the fourth air duct 114 and finally flows into the indoor unit through the third air duct 113. After heat exchange in the indoor unit, it enters the indoor environment, thus achieving air intake.

[0051] Please see Figure 9 When the flow path switching device 110 is in the third working state, the valve core 116 isolates the first air duct 111, the second air duct 112, the third air duct 113 and the fourth air duct 114 from each other, thereby cutting off the flow path.

[0052] Please continue reading. Figure 4 The total heat exchanger 150 is provided with an air inlet 151 and an air outlet 153. The air inlet 151 is connected to the air supply end of the blower 130, and the air outlet 153 is connected to the fourth air duct 114. Both the air inlet 151 and the air outlet 153 are oriented horizontally.

[0053] Considering the limited length and width of the outdoor unit, and to save installation space and improve the compactness of the fresh air assembly 100, in this embodiment, the air inlet 151 and the air outlet 153 are set at different vertical heights on the total heat exchanger 150. The air inlet 151 is connected to the air supply end of the blower 130, and the air outlet 153 is connected to the fourth air duct 114, thus achieving a reasonable arrangement of the blower 130 and the flow path switching device 110 in the vertical space and avoiding occupying too much horizontal area.

[0054] In order to further improve the compactness of the structure, in the embodiment, the air suction end of the air blower 130 is provided with a wind collecting cover 131, the flow path switching device 110 is stacked on the wind collecting cover 131, the wind collecting cover 131 is connected with the second air duct 112, and the filtering member 170 is arranged in the wind collecting cover 131.

[0055] In summary, the air conditioner 10 provided by the embodiment realizes preheating or precooling of air suction by using exhaust heat through the total heat exchanger 150, the temperature difference between the outdoor air and the indoor air is small after the outdoor air enters the indoor, and the air conditioning energy consumption is reduced. Moreover, the exhaust air and the intake air are realized through the same flow path, in the installation process, the connecting pipe of the first air duct 111 or the third air duct 113 can be accommodated by using the wall hole of the air conditioner 10, so that the additional excavation of the air inlet and the air outlet on the wall body is avoided, the installation cost is reduced, and the influence on the appearance of the residence is avoided.

[0056] Although the present application is disclosed as above, the present application is not limited to this. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and the protection scope of the present application should be subject to the scope defined by the claims.

Claims

1. A fresh air component, characterized in that, The device includes a flow path switching device (110), a blower (130), and a total heat exchanger (150). The flow path switching device (110) is provided with a first air duct (111), a second air duct (112), a third air duct (113), and a fourth air duct (114). The first air duct (111) is used to connect to the outdoor environment. The second air duct (112) is connected to the air intake end of the blower (130). The third air duct (113) is used to connect to the indoor environment. The air supply end of the blower (130) is connected to the fourth air duct (114) through the total heat exchanger (150). The flow path switching device (110) is configured to connect the first air duct (111) and the fourth air duct (114) in a first working state, and to connect the second air duct (112) and the third air duct (113). The flow path switching device (110) is also configured to connect the first air duct (111) and the second air duct (112) in a second working state, and to connect the third air duct (113) and the fourth air duct (114).

2. The fresh air assembly according to claim 1, characterized in that, The flow path switching device (110) is configured to switch between the first working state, the second working state and the third working state. In the third working state, the first air duct (111), the second air duct (112), the third air duct (113) and the fourth air duct (114) are not connected to each other.

3. The fresh air assembly according to claim 2, characterized in that, The flow path switching device (110) includes a housing (115) and a valve core (116). A switching chamber is provided inside the housing (115). The first air duct (111), the second air duct (112), the third air duct (113), and the fourth air duct (114) are all disposed on the housing (115) and communicate with the switching chamber. The valve core (116) is housed in the switching chamber and is used to rotate to multiple angle positions in the switching chamber so that the flow path switching device (110) switches between the first working state, the second working state, and the third working state.

4. The fresh air assembly according to claim 3, characterized in that, The first air duct (111), the second air duct (112), the third air duct (113) and the fourth air duct (114) are arranged sequentially at intervals on the same horizontal circumferential direction of the housing (115), and the first air duct (111) and the third air duct (113) are arranged opposite to each other, and the second air duct (112) and the fourth air duct (114) are arranged opposite to each other.

5. The fresh air assembly according to claim 1, characterized in that, The total heat exchanger (150) is provided with an air inlet (151) and an air outlet (153). The air inlet (151) is connected to the air supply end of the blower (130), and the air outlet (153) is connected to the fourth air duct (114). Both the air inlet (151) and the air outlet (153) face the horizontal direction, and the air inlet (151) and the air outlet (153) are at different heights in the vertical direction.

6. The fresh air assembly according to claim 5, characterized in that, The air intake end of the blower (130) is provided with an air collection hood (131), the flow path switching device (110) is stacked on the air collection hood (131), and the air collection hood (131) is connected to the second air duct (112).

7. The fresh air assembly according to claim 1, characterized in that, The fresh air assembly (100) also includes a filter (170), which is disposed at the air intake end of the blower (130).

8. An air conditioner, characterized in that, The system includes an air conditioning unit (11), a controller (12), and a fresh air assembly (100) as described in any one of claims 1-7. The flow path switching device (110), the blower (130), and the total heat exchanger (150) are all mounted on the air conditioning unit (11). The controller (12) is electrically connected to the blower (130) and the flow path switching device (110). The controller (12) is used to control the blower (130) to start or stop and to control the flow path switching device (110) to switch its operating state.

9. The air conditioner according to claim 8, characterized in that, The air conditioner (10) further includes a first detection device (13), and the controller (12) is electrically connected to the first detection device (13). The first detection device (13) is used to detect the air quality of the indoor environment, and the controller (12) is used to control the fan (130) to start or stop according to the detection result of the first detection device (13).

10. The air conditioner according to claim 8, characterized in that, The air conditioner (10) further includes a second detection device (14), a third detection device (15), and a fourth detection device (16). The controller (12) is electrically connected to the second detection device (14), the third detection device (15), and the fourth detection device (16), respectively. The second detection device (14) is used to detect the temperature of the total heat exchanger (150), the third detection device (15) is used to detect the indoor ambient temperature, and the fourth detection device (16) is used to detect the outdoor ambient temperature. The controller (12) is used to control the flow path switching device (110) to switch its working state according to the detection results of the second detection device (14), the third detection device (15), and the fourth detection device (16).

Images