Air conditioner and air outlet control method
By setting multiple air ducts in the air conditioner and controlling the start of the fan, the problems of direct blowing of hot and cold air in the air conditioner and the lack of air circulation in the air conditioner are solved, improving user comfort and the performance of the air conditioner.
Patent Information
- Application Number
- CN202310750733.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-25
- Publication Date
- 2024-12-27
AI Technical Summary
When the air conditioner is cooled or heated, it is easy for hot and cold air to blow directly on the user, affecting comfort, and in some modes, the indoor air will not circulate when there is no wind blowing, affecting comfort.
An air conditioner and an air outlet control method are designed to ensure that the air flows from the first air duct and the second air duct are provided in the housing and the start of the first fan and the second fan respectively when the air conditioner is operated. The air outlet and the second air outlet are air-exhausted at the same time or independently, mixing indoor air to avoid direct blowing and ensuring indoor air flow.
It effectively improves user comfort, avoids the problem of direct blowing of hot and cold air, and ensures indoor air circulation in different modes, improving the comfort and user experience of the air conditioner.
Smart Images

Figure CN119196758A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of air conditioners, and in particular, relates to an air conditioner and an air outlet control method. Background Art
[0002] Air conditioners are widely used in daily life. With the increasing popularity of air conditioners, users pay more and more attention to the comfort of use. In the related art, when cooling, the air conditioner may blow cold air directly to the user. Similarly, when heating, the hot air may blow directly to the user. Whether it is heating or cooling, the direct blowing of the user will affect the comfort. When the air conditioner is running in other characteristic modes, the air conditioner blows no air, which will cause the indoor air to be stagnant and affect the comfort. Summary of the invention
[0003] The present application aims to solve the technical problem of low comfort at least to a certain extent. To this end, the present application provides an air conditioner and an air outlet control method.
[0004] In a first aspect, an air conditioner provided in an embodiment of the present application includes:
[0005] The housing has a first air duct and a first air inlet and a first air outlet connected to the first air duct, and also has a second air duct and a second air inlet and a second air outlet connected to the second air duct,
[0006] The heat exchanger and the first fan are both arranged in the first air duct;
[0007] a second fan, disposed in the second air duct;
[0008] Wherein, the second air inlet and the first air outlet are located on the same side of the shell.
[0009] During the operation of the air conditioner, if only the first fan is started, only the first air outlet will blow air; if both the first fan and the second fan are started, air will be blown out of the first air outlet and the second air outlet. Since the first air duct and the second air duct are not connected and the second air inlet and the first air outlet are located on the same side of the shell, the air after heat exchange with the heat exchanger is blown out from the first air outlet, and then enters the second air duct from the second air inlet under the action of the second fan, or is mixed with part of the air in the indoor environment, so that the temperature value of the air blown out from the second air outlet is between the temperature value of the air blown out from the first air outlet and the ambient temperature, which can prevent the wind blown out from the first air outlet from blowing directly onto the user, thereby improving the user's comfort.
[0010] When the air conditioner is running in specific operating stages, such as reaching temperature, defrosting, self-cleaning and other modes in heating or cooling mode, when the air output from the first air outlet is small or even no air is output, the second fan can still be started and the second air outlet is opened. The second air outlet can output air independently, which can ensure indoor air circulation and improve comfort.
[0011] In an optional embodiment of the present application, the second fan can allow part of the wind blown out of the first air outlet and / or the wind in the indoor environment to enter the second air duct from the second air inlet, and be blown out from the second air outlet.
[0012] In an optional embodiment of the present application, the shell includes a main body and a panel connected to the main body, the first air duct and the second air duct are arranged in the main body, the first air inlet is arranged on the main body, and the first air outlet, the second air inlet and the second air outlet are arranged on the panel at intervals.
[0013] In an optional embodiment of the present application, the first air outlet, the second air inlet and the second air outlet are arranged in sequence from top to bottom.
[0014] In an optional embodiment of the present application, there are multiple first air inlets, and at least one first air inlet is disposed on the top and bottom of the main body.
[0015] In an optional embodiment of the present application, a partition is provided in the shell, and the partition divides the internal cavity of the shell into the first air duct and the second air duct that are independent of each other.
[0016] In an optional embodiment of the present application, the second air duct is arranged below the first air outlet, the second air inlet is arranged close to the first air outlet, and the second air outlet is arranged away from the first air outlet.
[0017] In an optional embodiment of the present application, the air conditioner includes a first air guide plate and a second air guide plate, the first air guide plate is rotatably connected to the shell above the first air outlet, the second air guide plate is rotatably connected to the shell below the first air outlet, and the first air guide plate and the second air guide plate can open or close the first air outlet at the same time.
[0018] In an optional embodiment of the present application, when the air conditioner operates in a strong cooling mode, the first fan operates at a first speed, and the first air guide plate and the second air guide plate open the first air outlet;
[0019] Wherein, the first air guide plate is located at a maximum angle, and the second air guide plate is located at a maximum angle.
[0020] In an optional embodiment of the present application, when the air conditioner operates in a comfort cooling mode, the first fan operates at a second speed, and the first air guide plate and the second air guide plate open the first air outlet;
[0021] Wherein, the first air guide plate is arranged horizontally or tilted upward, and the second air guide plate is arranged horizontally or tilted upward.
[0022] In an optional embodiment of the present application, under the condition that the air conditioner operates in a strong heating mode, the first fan operates at a third speed, and the first air guide plate and the second air guide plate open the first air outlet;
[0023] Wherein, the second air guide plate is located at the maximum angle, and the first air guide plate is parallel to the second air guide plate.
[0024] In an optional embodiment of the present application, when the air conditioner operates in a comfort heating mode, the first fan operates at a fourth speed, and the first air guide plate and the second air guide plate open the first air outlet;
[0025] Wherein, the first air guide plate is arranged to be tilted downward, and the second air guide plate is arranged to be tilted downward.
[0026] In an optional embodiment of the present application, the air conditioner also includes a third air guide plate, which is rotatably connected to the shell. When the air conditioner operates in a comfort cooling mode or a comfort heating mode, the second fan operates at a fifth speed or a sixth speed, and the third air guide plate opens the second air outlet.
[0027] In a second aspect, an embodiment of the present application provides an air outlet control method, which is applied to the above-mentioned air conditioner, and the air outlet control method includes:
[0028] Get the ambient temperature value;
[0029] Calculating the difference between the ambient temperature value and the set temperature value;
[0030] If the difference is greater than or equal to a preset difference, the first fan and the first air outlet are controlled to be turned on, and the second fan and the second air outlet are controlled to be turned off;
[0031] If the difference is less than the preset difference, the first fan, the first air outlet, the second fan and the second air outlet are controlled to open.
[0032] The beneficial effects of the air outlet control method provided in the second aspect are the same as the beneficial effects of the air conditioner provided in the first aspect, and will not be repeated here.
[0033] In an optional embodiment of the present application, the air conditioner includes a first air guide plate, a second air guide plate and a third air guide plate, the first air guide plate is rotatably connected to the shell above the first air outlet, the second air guide plate is rotatably connected to the shell below the first air outlet, and the third air guide plate is rotatably connected to the shell at the second air outlet.
[0034] In an optional embodiment of the present application, if the air conditioner operates in a cooling mode, the step of controlling the first fan and the first air outlet to be turned on and the second fan and the second air outlet to be turned off includes:
[0035] The first fan is controlled to run at a first speed, the second fan is turned off, the first air guide plate is at a maximum angle, the second air guide plate is at a maximum angle, and the third air guide plate is turned off.
[0036] In an optional embodiment of the present application, if the air conditioner operates in a cooling mode, the step of controlling the first fan, the first air outlet, the second fan, and the second air outlet to open includes:
[0037] The first fan runs at a second speed, the second fan runs at a fifth speed, the first air guide plate is set horizontally or tilted upward, the second air guide plate is set horizontally or tilted upward, and the third air guide plate opens the second air outlet.
[0038] In an optional embodiment of the present application, if the air conditioner operates in a heating mode, the step of controlling the first fan and the first air outlet to be turned on and the second fan and the second air outlet to be turned off includes:
[0039] The first fan is controlled to run at a third speed, the second fan is turned off, the second air guide plate is at a maximum angle, the first air guide plate is parallel to the second air guide plate, and the third air guide plate closes the second air outlet.
[0040] In an optional embodiment of the present application, if the air conditioner operates in a heating mode, the step of controlling the first fan, the first air outlet, the second fan, and the second air outlet to open includes:
[0041] The first fan is controlled to run at a fourth speed and the second fan is controlled to run at a sixth speed, the first air guide plate is set to be tilted downward, the second air guide plate is set to be tilted downward, and the third air guide plate opens the second air outlet. BRIEF DESCRIPTION OF THE DRAWINGS
[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0043] Figure 1 A structural schematic diagram of the air conditioner provided in an embodiment of the present application from a first viewing angle is shown.
[0044] Figure 2 A structural schematic diagram of a second viewing angle of the air conditioner provided in an embodiment of the present application is shown.
[0045] Figure 3 A schematic diagram of the structure of the air conditioner provided in an embodiment of the present application when operating in a strong cooling mode is shown.
[0046] Figure 4 A structural schematic diagram of the air conditioner provided in an embodiment of the present application when operating in a comfort cooling mode is shown.
[0047] Figure 5 A schematic diagram of the structure of the air conditioner provided in an embodiment of the present application when operating in a strong heating mode is shown.
[0048] Figure 6 A schematic diagram of the structure of the air conditioner provided in an embodiment of the present application when operating in a comfort heating mode is shown.
[0049] Figure 7 A flow chart of the air outlet control method provided in an embodiment of the present application is shown.
[0050] Figure 8 A flowchart of the sub-steps of step S400 of the air outlet control method provided in an embodiment of the present application is shown.
[0051] Fig. 9 A flowchart of the sub-steps of step S500 of the air outlet control method provided in an embodiment of the present application is shown.
[0052] Figure markings: 100-air conditioner, 110-housing, 112a-first air duct, 112b-first air inlet, 112c-first air outlet, 113a-second air duct, 113b-second air inlet, 113c-second air outlet, 114-main body, 116-panel, 118-partition, 120-heat exchanger, 130-first fan, 140-second fan, 152-first air guide plate, 154-second air guide plate, 160-third air guide plate. DETAILED DESCRIPTION
[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0054] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0055] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0056] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0057] Air conditioners are widely used in daily life. With the increasing popularity of air conditioners, users pay more and more attention to the comfort of use. In the air conditioners in the related art, when cooling, there will be a situation where cold air blows directly to the user. Similarly, when heating, there is also a situation where hot air blows directly to the user. Whether it is heating or cooling, direct blowing to the user will affect the comfort. When the air conditioner is running in other characteristic modes, the air conditioner blows out no wind, which will cause the indoor air to be stagnant, affecting the comfort. The air conditioner provided in the embodiment of the present application can improve the above problems. The embodiment of the present application can provide a more comfortable air supply air conditioner. The air conditioner and air outlet control method provided in the embodiment of the present application can effectively solve the discomfort of direct blowing of cold and hot air and the feeling of stuffiness when there is no air flow, thereby improving the comfort of users.
[0058] The present application is described below with reference to the accompanying drawings and specific embodiments:
[0059] See also Figure 1 and Figure 2 The embodiment of the present application provides an air conditioner 100. The air conditioner 100 provided by the embodiment of the present application can effectively solve the problems of discomfort caused by direct blowing of cold or hot air and stuffiness when there is no air flow, thereby improving the comfort of users.
[0060] In the embodiment of the present application, the air conditioner 100 includes: a shell 110, a heat exchanger 120, a first fan 130 and a second fan 140, the shell 110 has a first air duct 112a and a first air inlet 112b and a first air outlet 112c connected to the first air duct 112a, a second air duct 113a and a second air inlet 113b and a second air outlet 113c connected to the second air duct 113a, the heat exchanger 120 and the first fan 130 are both arranged in the first air duct 112a; the second fan 140 is arranged in the second air duct 113a.
[0061] The second air inlet 113 b and the first air outlet 112 c are located on the same side of the housing 110 .
[0062] The second fan 140 can allow part of the wind blown out of the first air outlet 112c and / or the wind in the indoor environment to enter the second air duct 113a from the second air inlet 113b and be blown out from the second air outlet 113c.
[0063] In the embodiment of the present application, the heat exchanger 120 and the first fan 130 are both arranged in the first air duct 112a. When the air conditioner 100 is in operation, the first fan 130 is started, and the wind in the indoor environment enters the first housing 110 through the first fan 130, and is blown out from the first air outlet 112c after heat exchange with the heat exchanger 120. If the air conditioner 100 is in heating mode, hot air is blown out from the first air outlet 112c, and if the air conditioner 100 is in cooling mode, cold air is blown out from the first air outlet 112c.
[0064] The second air inlet 113b and the first air outlet 112c are located on the same side of the housing 110. When the first air outlet 112c is opened and the second air inlet 113b is opened, at least part of the wind blown out from the first air outlet 112c can enter the second air duct 113a from the second air inlet 113b. If the first air outlet 112c is closed and the second air inlet 113b is opened, the wind in the indoor environment can enter the second air duct 113a from the second air inlet 113b. In other words, the second fan 140 can allow part of the wind blown out from the first air outlet 112c and / or the wind in the indoor environment to enter the second air duct 113a from the second air inlet 113b.
[0065] The second fan 140 can allow part of the wind blown out of the first air outlet 112c and / or the wind in the indoor environment to enter the second air duct 113a from the second air inlet 113b, including three situations as follows:
[0066] The first type is that only the wind blown out from the first air outlet 112c enters the second air duct 113a through the second air inlet 113b; the second type is that the wind blown out from the first air outlet 112c and the wind in the indoor environment enter the second air duct 113a through the second air inlet 113b. The third type is that only the wind in the indoor environment enters the second air duct 113a through the second air inlet 113b.
[0067] During the operation of the air conditioner 100, if only the first fan 130 is started, only the first air outlet 112c blows air; if both the first fan 130 and the second fan 140 are started, the first air outlet 112c and the second air outlet 113c, since the first air duct 112a and the second air duct 113a are not connected, the wind after heat exchange with the heat exchanger 120 is blown out from the first air outlet 112c, and then enters the second air duct 113a from the second air inlet 113b under the action of the second fan 140, or is mixed with part of the air in the indoor environment, so that the temperature value of the wind blown out from the second air outlet 113c is between the temperature value of the wind blown out from the first air outlet 112c and the ambient temperature value, which can prevent the wind blown out from the first air outlet 112c from blowing directly onto the user, thereby improving the user's comfort.
[0068] When the air conditioner 100 is running in a specific operating stage, such as reaching the temperature, defrosting, self-cleaning and other modes in the heating or cooling mode, when the air output from the first air outlet 112c is small or even no air is output, the second fan 140 can still be started and the second air outlet 113c is opened. The second air outlet 113c can output air independently, which can ensure indoor air circulation and improve comfort.
[0069] It is easy to understand that when the first air outlet 112c has little or no wind, the wind entering the second air duct 113a from the second air inlet 113b is mainly the wind in the indoor environment, which mainly plays the role of air flow, keeps the indoor air flowing, and improves comfort.
[0070] Among them, the first air duct 112a and the second air duct 113a are independent of each other, and the start-up of the first fan 130 and the second fan 140 are also independent of each other. Only the first air outlet 112c can blow air, or only the second air outlet 113c can blow air, or the first air outlet 112c and the second air outlet 113c can blow air at the same time. No matter which air outlet method is used, it can ensure indoor air flow and improve comfort.
[0071] In some embodiments, the shell 110 includes a main body 114 and a panel 116 connected to the main body 114, the first air duct 112a and the second air duct 113a are arranged in the main body 114, the first air inlet 112b is arranged on the main body 114, and the first air outlet 112c, the second air inlet 113b and the second air outlet 113c are arranged on the panel 116 at intervals.
[0072] The first air outlet 112c, the second air inlet 113b and the second air outlet 113c are all arranged on the panel 116. After the air in the first air duct 112a that has undergone heat exchange with the heat exchanger 120 is blown out from the first air outlet 112c, under the action of the second fan 140, the air blown out from the first air outlet 112c can enter the second air duct 113a and then be blown out from the second air outlet 113c. When the first air outlet 112c and the second air outlet 113c need to discharge air at the same time, the air blown out from the first air outlet 112c can enter the second air duct 113a together with the wind in the indoor environment and then be blown out from the second air outlet 113c. Since the wind in the second air duct 113a is mixed with the wind in the indoor environment, the temperature value of the air blown out from the second air outlet 113c is between the temperature value of the indoor environment and the temperature value of the air blown out from the first air outlet 112c, thereby outputting comfortable natural wind.
[0073] For example, the air conditioner 100 is currently operating in cooling mode, the first fan 130 and the second fan 140 are started at the same time, and the wind entering the first air duct 112a is cooled by the heat exchanger 120 and blown out from the first air outlet 112c. The wind blown out of the first air outlet 112c is mixed with the wind in the indoor environment by the second fan 140, and the temperature of the wind blown out of the second air outlet 113c is higher than the wind blown out of the first air outlet 112c, and lower than the indoor environment temperature. When the wind blown out of the second air outlet 113c blows directly onto the user, the user will not feel the direct cold because the temperature is higher than that of the first air outlet 112c.
[0074] When the air conditioner 100 operates in the heating mode, the first fan 130 and the second fan 140 are started at the same time, and the wind entering the first air duct 112a is heated by the heat exchanger 120 and then blown out from the first air outlet 112c. Under the action of the second fan 140, part of the wind blown out from the first air outlet 112c and the wind in the indoor environment enter the second air duct 113a. After mixing in the second air duct 113a, the temperature value of the wind blown out from the second air outlet 113c is lower than the temperature value of the wind blown out from the first air outlet 112c. If the wind blown out from the second air outlet 113c blows directly onto the user, the user will not feel the heat due to the lower temperature, thereby improving the user's comfort.
[0075] In some embodiments, the first air outlet 112c, the second air inlet 113b and the second air outlet 113c are arranged in sequence from top to bottom.
[0076] The first air outlet 112c is arranged at the top, the second air inlet 113b is arranged close to the first air outlet 112c, and the second air outlet 113c is arranged far away from the first air outlet 112c. When the first fan 130 and the second fan 140 are started at the same time, the wind blown out from the first air outlet 112c can directly enter the second air duct 113a through the second air inlet 113b, so that the wind blown out from the first air outlet 112c can enter the second air duct 113a more, and the wind in the indoor environment enters the second air duct 113a less, thereby ensuring that the temperature value of the wind blown out from the second air outlet 113c is closer to the temperature value of the wind blown out from the first air outlet 112c, and ensuring the comfort of the wind blowing directly to the user.
[0077] The second air outlet 113c is set at the bottom, and the air conditioner 100 is usually installed at the top during installation. Therefore, the second air outlet 113c is closest to the user, and the air blown out from the second air outlet 113c blows directly to the user first and is more likely to blow directly to the user. The temperature value of the air blown out from the second air outlet 113c is between the indoor ambient temperature value and the temperature value of the air blown out from the first air outlet 112c, thereby avoiding the cold air or hot air blown out from the first air outlet 112c from blowing directly to the user.
[0078] In addition, in the vertical direction, the projection of the first air outlet 112c in the vertical direction and the projection of the second air inlet 113b in the vertical direction at least partially overlap, that is, the first air outlet 112c and the second air inlet 113b are arranged correspondingly, and when the first fan 130 and the second fan 140 are started at the same time, the wind blown out of the first air outlet 112c can pass through the second air inlet 113b as much as possible and enter the second air duct 113a, so that the temperature value of the air blown out from the second air outlet 113c is closer to the temperature value of the air blown out from the first air outlet 112c, thereby improving the user's comfort.
[0079] In other words, the second air duct 113a is arranged below the first air outlet 112c, ensuring that the wind blown out from the first air outlet 112c can enter the second air duct 113a through the second air inlet 113b, so that the temperature value of the wind blown out from the second air outlet 113c is closer to the temperature value of the wind blown out from the first air outlet 112c, thereby improving the user's comfort.
[0080] In some embodiments, there are multiple first air inlets 112 b , and at least one first air inlet 112 b is disposed on the top and the bottom of the main body 114 .
[0081] The top of the main body 114 may be provided with a larger first air inlet 112b, or multiple first air inlets 112b with smaller openings. Similarly, the bottom of the main body 114 may be provided with a larger first air inlet 112b, or multiple first air inlets 112b with smaller openings.
[0082] A first air inlet 112b is provided at the top and bottom of the main body 114 so that wind from all directions in the indoor environment can enter the first air duct 112a, thereby improving the uniformity of cooling or heating of the air conditioner 100.
[0083] In some embodiments, a partition 118 is disposed in the housing 110 , and the partition 118 divides the internal cavity of the housing 110 into a first air duct 112 a and a second air duct 113 a that are independent of each other.
[0084] The partition 118 is arranged in the main body 114, and the partition 118 and the main body 114 form a first air duct 112a, and the partition 118 and the panel 116 form a second air duct 113a. The first air duct 112a and the second air duct 113a are independent of each other, so that the first air outlet 112c and the second air outlet 113c can be combined into a variety of air outlet modes, which can be any one of the first air outlet 112c and the second air outlet 113c, or a combination of air outlets.
[0085] In some embodiments, the diameter of the second fan 140 is 40 mm to 60 mm.
[0086] Among them, the first fan 130 and the second fan 140 are both cross-flow fans. The second fan 140 is arranged in the second air duct 113a. The relatively small size of the second fan 140 can reduce the occupancy of the second air duct 113a, so that the thickness of the entire air conditioner 100 can be set thinner, making the structure of the entire air conditioner 100 simple and compact, and the space utilization rate is high.
[0087] In some embodiments, the air conditioner 100 includes a first air guide plate 152 and a second air guide plate 154. The first air guide plate 152 is rotatably connected to the shell 110 above the first air outlet 112c, and the second air guide plate 154 is rotatably connected to the shell 110 below the first air outlet 112c. The first air guide plate 152 and the second air guide plate 154 can open or close the first air outlet 112c at the same time.
[0088] A first air guide plate 152 and a second air guide plate 154 are simultaneously provided at the first air outlet 112c. The air outlet direction of the first air outlet 112c can be adjusted by the combination of the first air guide plate 152 and the second air guide plate 154, so that the first air outlet 112c can achieve different air outlet directions in different operating modes of the air conditioner 100, thereby improving user comfort.
[0089] In some embodiments, the air conditioner 100 may include a strong mode and a comfortable mode. If the difference between the indoor ambient temperature and the set temperature is large, it means that the current ambient temperature is far from the set temperature. At this time, the user's comfort is reflected in the need for rapid cooling or heating so that the indoor ambient temperature can quickly reach the set temperature. Whether it is direct blowing is not considered, and rapid cooling or rapid heating is mainly used. Among them, the strong mode includes a strong heating mode and a strong cooling mode.
[0090] If the difference between the indoor ambient temperature and the set temperature is small, it means that the current ambient temperature is close to the set temperature, and the user's body temperature perception is relatively comfortable. At this time, the user's comfort is reflected in the need for direct blowing protection, so the problem of direct blowing protection needs to be considered here. Among them, the comfort mode includes the comfort heating mode and the comfort cooling mode.
[0091] In several different modes, the positions of the first air guide plate 152 and the second air guide plate 154 are different, so that the air outlet directions of the first air outlet 112c are different, as follows:
[0092] See also Figure 3 When the air conditioner 100 operates in the strong cooling mode, the first fan 130 operates at the first speed, and the first air guide plate 152 and the second air guide plate 154 open the first air outlet 112c. The first air guide plate 152 is at the maximum angle, and the second air guide plate 154 is at the maximum angle.
[0093] In some embodiments, the first air guide plate 152 is arranged above the air outlet, and the second air guide plate 154 is arranged below the air outlet. The maximum angle of the first air guide plate 152 refers to the maximum upward position of the first air guide plate 152, and the maximum angle of the second air guide plate 154 refers to the maximum downward position of the second air guide plate 154.
[0094] When the difference between the indoor ambient temperature and the set temperature is large, it means that the current ambient temperature is high, and it is necessary to turn on the strong cooling mode to quickly cool down. In the strong cooling mode, the indoor environment needs to be cooled quickly, and the user needs to quickly perceive the cooling capacity. Here, the first air guide plate 152 and the second air guide plate 154 are opened to the maximum position, so that the opening area of the first air outlet 112c is the largest, and the first fan 130 runs at the first speed. The wind cooled by the heat exchanger 120 can be quickly blown out from the first air outlet 112c, so that the indoor ambient temperature can be quickly reduced, improving the user's comfort.
[0095] Among them, the first rotation speed is a relatively large rotation speed. In the stage where rapid cooling is required, the air can flow from the first air outlet 112c at a relatively large wind speed, providing more cooling capacity to the indoor environment, so that the indoor environment can be cooled down quickly and the user's comfort is improved.
[0096] See also Figure 4 In some embodiments, when the air conditioner 100 operates in the comfort cooling mode, the first fan 130 operates at the second speed, and the first air guide plate 152 and the second air guide plate 154 open the first air outlet 112c. The first air guide plate 152 is arranged horizontally or tilted upward, and the second air guide plate 154 is arranged horizontally or tilted upward.
[0097] When the difference between the ambient temperature and the set temperature is small, it means that the current ambient temperature is close to the set temperature and there is no need to cool down quickly. At this time, the first air guide plate 152 and the second air guide plate 154 are set horizontally or tilted upward to prevent cold air from blowing directly downward and directly onto the user.
[0098] The first air guide plate 152 and the second air guide plate 154 may be parallel, that is, the first air guide plate 152 and the second air guide plate 154 may be arranged horizontally at the same time, or may be arranged upwardly tilted at the same angle. Of course, the first air guide plate 152 and the second air guide plate 154 may not be parallel, and each of them can be arranged horizontally or tilted upwardly.
[0099] Similarly, when the ambient temperature is close to the set temperature, the first fan 130 can rotate at a lower speed to ensure that the first air outlet 112c can continuously output cold air. That is, the second speed is lower than the first speed.
[0100] See also Figure 5 When the air conditioner 100 operates in the strong heating mode, the first fan 130 operates at the third speed, and the first air guide plate 152 and the second air guide plate 154 open the first air outlet 112c. The second air guide plate 154 is at the maximum angle, and the first air guide plate 152 is parallel to the second air guide plate 154.
[0101] When the difference between the indoor ambient temperature and the set temperature is large, it means that the current ambient temperature is low, and the strong heating mode needs to be turned on to quickly heat up. In the strong heating mode, the indoor environment needs to be heated quickly, and the user needs to quickly feel the heating amount. Here, the second air guide plate 154 is opened to the maximum downward position, and the second air guide plate 154 is parallel to the first air guide plate 152, so that under the action of the first air guide plate 152 and the second air guide plate 154, the hot air can flow downward, so that the user can feel the hot air and improve the user's comfort.
[0102] Among them, the third speed is a larger speed. In the stage where rapid heating is required, the air can flow from the first air outlet 112c at a larger wind speed to provide more heat to the indoor environment, so that the indoor environment can be heated up quickly and the user's comfort is improved.
[0103] See also Figure 6 In some embodiments, when the air conditioner 100 operates in the comfort heating mode, the first fan 130 operates at a fourth speed, and the first air guide plate 152 and the second air guide plate 154 open the first air outlet 112c;
[0104] The first air guide plate 152 is tilted downward, and the second air guide plate 154 is tilted downward.
[0105] When the difference between the ambient temperature and the set temperature is small, it means that the current ambient temperature is close to the set temperature and there is no need to quickly increase the temperature. Since hot air is relatively light, it naturally goes upward. Therefore, even in the comfort heating mode, the first air guide plate 152 and the second air guide plate 154 are tilted downward to ensure that the hot air can blow toward the user, so that the ambient temperature below the room can reach the set temperature.
[0106] Similarly, when the ambient temperature is close to the set temperature, the first fan 130 can rotate at a lower speed to ensure that the first air outlet 112c can continuously output cold air. That is, the fourth speed is lower than the third speed.
[0107] In some embodiments, the air conditioner 100 also includes a third air guide plate 160, which is rotatably connected to the shell 110. When the air conditioner 100 operates in a comfort cooling mode or a comfort heating mode, the second fan 140 operates at a fifth speed or a sixth speed, and the third air guide plate 160 opens the second air outlet 113c.
[0108] The second fan 140 and the third air guide plate 160 are started in the comfort heating mode and the comfort cooling mode. When the air conditioner 100 operates in the comfort heating mode or the comfort cooling mode, it means that the current ambient temperature value is close to or has reached the set temperature value, and there is no need to cool down or heat up quickly. At this time, the problem of preventing direct blowing needs to be considered.
[0109] When the air conditioner 100 operates in the comfort cooling mode, the second fan 140 operates at the fifth speed, and controls the third air guide plate 160 to open the second air outlet 113c, so that the wind blown out from the first air outlet 112c can enter the second air duct 113a from the second air inlet 113b, and mix with the indoor wind that enters the second air duct 113a through the second air inlet 113b, so as to appropriately increase the temperature value of the wind blown out from the second air outlet 113c. When the wind blown out from the second air outlet 113c blows directly onto the user, the user will not feel too cold, thereby improving the user's comfort.
[0110] Similarly, when the air conditioner 100 operates in the comfort heating mode, the second fan 140 operates at the sixth speed, and controls the third air guide plate 160 to open the second air outlet 113c, so that the wind blown out from the first air outlet 112c can enter the second air duct 113a from the second air inlet 113b, and mix with the indoor wind that enters the second air duct 113a through the second air inlet 113b, thereby appropriately increasing the temperature value of the wind blown out from the second air outlet 113c. When the wind blown out from the second air outlet 113c blows directly onto the user, the user will not feel too hot, thereby improving the user's comfort.
[0111] The fifth speed and the sixth speed may be the same or different. In the comfort heating mode and the comfort cooling mode, the opening degree of the second air outlet 113c opened by the third air guide plate 160 may be the same or different, and no specific limitation is imposed.
[0112] In summary, the air conditioner 100 provided in the embodiment of the present application can select different air outlet modes according to different working conditions, so that at least any one of the first air outlet 112c and the second air outlet 113c can discharge air, which can effectively improve the discomfort of direct blowing of hot and cold air and the feeling of stuffiness when there is no air-conditioning flow, thereby improving the user comfort.
[0113] Based on the same inventive concept, the embodiment of the present application also provides an air outlet control method, which is applied to the above-mentioned air conditioner 100, and the structure of the air conditioner 100 is not described in detail here. The air outlet control method provided in the embodiment of the present application can effectively solve the problems of discomfort caused by direct blowing of hot and cold air and stuffiness when there is no air flow, thereby improving the comfort of users.
[0114] See also Figure 7 The specific steps of the air outlet control method provided in the embodiment of the present application are as follows:
[0115] Step S100, obtaining the ambient temperature value.
[0116] The ambient temperature value is the current indoor temperature value, which is the real-time temperature value of the indoor environment. It can be obtained by setting a temperature sensor on the air conditioner 100, or by a temperature detection module in the controller.
[0117] Step S200, calculating the difference between the ambient temperature value and the set temperature value.
[0118] The set temperature value is the target temperature value for heating or cooling the air conditioner 100. It can be set by the user according to the current weather each time it is started, or it can be preset when the air conditioner 100 is turned on, or it can be set by the user during the operation of the air conditioner 100.
[0119] To calculate the difference between the ambient temperature and the set temperature, the difference is obtained by subtracting the set temperature from the ambient temperature.
[0120] Step S300, determining whether the difference is greater than or equal to a preset difference.
[0121] After the difference is calculated, the relationship between the difference and the preset difference is compared. By comparing the relationship between the difference and the preset difference, it can be judged whether the current ambient temperature value is close to the set temperature value. If the difference is greater than or equal to the set difference, it means that there is a certain gap between the current ambient temperature value and the set temperature value. If the difference is less than the set difference, it means that the current ambient temperature value is close to the set temperature value.
[0122] Step S400: If the difference is greater than or equal to the preset difference, the first fan 130 and the first air outlet 112c are controlled to be turned on, and the second fan 140 and the second air outlet 113c are controlled to be turned off.
[0123] If the difference is greater than or equal to the preset difference, it means that the gap between the current ambient temperature value and the set temperature value is large, and the cooling capacity or heating capacity needs to be further increased. At this time, the second air outlet 113c is closed, and air is directly discharged from the first air outlet 112c, so that the heated or cooled air is directly blown into the room.
[0124] See also Figure 8 , wherein step S400 may include step S410, step S420 and step S430.
[0125] Step S410, determining whether the air conditioner 100 is operating in a heating mode or a cooling mode.
[0126] Since cold air and hot air have different characteristics, the positions of the first air guide plate 152 and the second air guide plate 154 are different in the strong heating mode and the strong cooling mode, so it is necessary to determine whether the air conditioner 100 is running in the heating mode or the cooling mode.
[0127] Step S420, if the air conditioner 100 operates in cooling mode, the first fan 130 is controlled to operate at a first speed, the second fan 140 is turned off, the first air guide plate 152 is at a maximum angle, the second air guide plate 154 is at a maximum angle, and the third air guide plate 160 is turned off.
[0128] For the convenience of description, the process of step S420 is defined as a strong cooling mode. When the air conditioner 100 runs in the strong cooling mode, the indoor environment needs to be cooled quickly, and the user needs to quickly feel the cooling capacity. Here, the first air guide plate 152 and the second air guide plate 154 are opened to the maximum position, so that the opening area of the first air outlet 112c is maximized, and the first fan 130 runs at the first speed. The air cooled by the heat exchanger 120 can be quickly blown out from the first air outlet 112c, so that the indoor ambient temperature value can be quickly reduced, thereby improving the user's comfort.
[0129] Among them, the first rotation speed is a relatively large rotation speed. In the stage where rapid cooling is required, the air can flow from the first air outlet 112c at a relatively large wind speed, providing more cooling capacity to the indoor environment, so that the indoor environment can be cooled down quickly and the user's comfort is improved.
[0130] Step S430, if the air conditioner 100 operates in heating mode, the first fan 130 is controlled to operate at a first speed, the second fan 140 is turned off, the first air guide plate 152 is at a maximum angle, the second air guide plate 154 is at a maximum angle, and the third air guide plate 160 is turned off.
[0131] For the convenience of description, the process of step S430 is defined as a strong heating mode. When the air conditioner 100 runs in a strong heating mode, it indicates that the current ambient temperature is low and it is necessary to turn on the strong heating mode to quickly heat up. In the strong heating mode, the indoor environment needs to be heated quickly and the user needs to quickly feel the heating amount. Here, the second air guide plate 154 is opened to the maximum downward position, and the second air guide plate 154 is parallel to the first air guide plate 152, so that under the action of the first air guide plate 152 and the second air guide plate 154, the hot air can flow downward, so that the user can feel the hot air and improve the user's comfort.
[0132] Among them, the third speed is a larger speed. In the stage where rapid heating is required, the air can flow from the first air outlet 112c at a larger wind speed to provide more heat to the indoor environment, so that the indoor environment can be heated up quickly and the user's comfort is improved.
[0133] See also Figure 7 , step S500, if the difference is less than the preset difference, the first fan 130, the first air outlet 112c, the second fan 140 and the second air outlet 113c are controlled to be turned on.
[0134] If the difference is less than the preset difference, it means that the current ambient temperature is close to or equal to the set temperature, and the current ambient temperature has reached a temperature that the user can feel comfortable at. At this time, the problem of direct blowing protection needs to be considered.
[0135] See also Fig. 9 , wherein step S500 may include step S510, step S520 and step S530.
[0136] Step S510, determining whether the air conditioner is operating in a heating mode or a cooling mode.
[0137] Since cold air and hot air have different characteristics, the positions of the first air guide plate 152 and the second air guide plate 154 in the comfort heating mode and the comfort cooling mode are also different, so it is necessary to determine whether the air conditioner 100 is running in the heating mode or the cooling mode.
[0138] Step S520, if the air conditioner 100 operates in cooling mode, the first fan 130 operates at the second speed, the second fan 140 operates at the fifth speed, the first air guide plate 152 is set horizontally or tilted upward, the second air guide plate 154 is set horizontally or tilted upward, and the third air guide plate 160 opens the second air outlet 113c.
[0139] For the convenience of description, the process of step S520 is defined as a comfortable heating mode. When the difference between the ambient temperature value and the set temperature value is small, it means that the current ambient temperature value is close to the set temperature value and there is no need to cool down quickly. At this time, the first air guide plate 152 and the second air guide plate 154 are set horizontally or tilted upward to prevent the cold air from blowing directly downward and directly onto the user.
[0140] The first air guide plate 152 and the second air guide plate 154 may be parallel, that is, the first air guide plate 152 and the second air guide plate 154 may be arranged horizontally at the same time, or may be arranged upwardly tilted at the same angle. Of course, the first air guide plate 152 and the second air guide plate 154 may not be parallel, and each of them can be arranged horizontally or tilted upwardly.
[0141] Similarly, when the ambient temperature is close to the set temperature, the first fan 130 can rotate at a lower speed to ensure that the first air outlet 112c can continuously output cold air. That is, the second speed is lower than the first speed.
[0142] When the air conditioner 100 operates in the comfort cooling mode, the second fan 140 operates at the fifth speed, and controls the third air guide plate 160 to open the second air outlet 113c, so that the wind blown out from the first air outlet 112c can enter the second air duct 113a from the second air inlet 113b, and mix with the indoor wind that enters the second air duct 113a through the second air inlet 113b, so as to appropriately increase the temperature value of the wind blown out from the second air outlet 113c. When the wind blown out from the second air outlet 113c blows directly onto the user, the user will not feel too cold, thereby improving the user's comfort.
[0143] Step S530, if the air conditioner 100 operates in heating mode, the first fan 130 is controlled to operate at the fourth speed and the second fan 140 is controlled to operate at the sixth speed, the first air guide plate 152 is set to be tilted downward, the second air guide plate 154 is set to be tilted downward, and the third air guide plate 160 opens the second air outlet 113c.
[0144] For the convenience of description, the process of step S530 is defined as the comfort heating mode. When the air conditioner 100 operates in the comfort heating mode or the comfort cooling mode, it means that the current ambient temperature value has approached or reached the set temperature value, and there is no need to quickly cool down or heat up. At this time, the problem of direct blowing prevention needs to be considered.
[0145] Similarly, when the air conditioner 100 operates in the comfort heating mode, the second fan 140 operates at the sixth speed, and controls the third air guide plate 160 to open the second air outlet 113c, so that the wind blown out from the first air outlet 112c can enter the second air duct 113a from the second air inlet 113b, and mix with the indoor wind that enters the second air duct 113a through the second air inlet 113b, thereby appropriately increasing the temperature value of the wind blown out from the second air outlet 113c. When the wind blown out from the second air outlet 113c blows directly onto the user, the user will not feel too hot, thereby improving the user's comfort.
[0146] In addition, the air conditioner 100 also includes a controller, which is used to execute a computer program to implement the above-mentioned air outlet control method. The controller can be an integrated circuit chip with signal processing capabilities. The controller can be integrated on the air conditioner 100. The above-mentioned controller can be a general processor, including a central processing unit (CPU), or a single-chip microcomputer, a microcontroller unit (MCU), a complex programmable logic device (CPLD), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), an embedded ARM and other chips. The controller can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present invention.
[0147] In a feasible implementation, the air conditioner 100 may further include a memory for storing program instructions executable by the controller. The memory may be an independent external memory, including but not limited to a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), and an electrically erasable read-only memory (EEPROM). The memory may also be integrated with the controller, for example, the memory may be integrated with the controller in the same chip.
[0148] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.
[0149] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0150] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.
Claims
1. An air conditioner, characterized in that: include: The housing (110) comprises a first air duct (112a) and a first air inlet (112b) and a first air outlet (112c) which are in communication with the first air duct (112a), and further comprises a second air duct (113a) and a second air inlet (113b) and a second air outlet (113c) which are in communication with the second air duct (113a); The heat exchanger (120) and the first fan (130) are both arranged in the first air duct (112a); a second fan (140), arranged in the second air duct (113a); Wherein, the second air inlet (113b) and the first air outlet (112c) are located on the same side of the housing (110).
2. The air conditioner according to claim 1, characterized in that: The second fan (140) can allow part of the wind blown out of the first air outlet (112c) and / or the wind in the indoor environment to enter the second air duct (113a) from the second air inlet (113b) and be blown out from the second air outlet (113c).
3. The air conditioner according to claim 1, characterized in that: The shell (110) includes a main body (114) and a panel (116) connected to the main body (114); the first air duct (112a) and the second air duct (113a) are arranged in the main body (114); the first air inlet (112b) is arranged on the main body (114); and the first air outlet (112c), the second air inlet (113b) and the second air outlet (113c) are arranged at intervals on the panel (116).
4. The air conditioner according to claim 3, characterized in that: The first air outlet (112c), the second air inlet (113b) and the second air outlet (113c) are arranged in sequence from top to bottom.
5. The air conditioner according to claim 3, characterized in that: There are a plurality of first air inlets (112b), and at least one first air inlet (112b) is disposed on the top and the bottom of the main body (114).
6. The air conditioner according to claim 1, characterized in that: A partition (118) is provided inside the shell (110), and the partition (118) divides the internal cavity of the shell (110) into the first air duct (112a) and the second air duct (113a) which are independent of each other.
7. The air conditioner according to claim 1, characterized in that: The second air duct (113a) is arranged below the first air outlet (112c), the second air inlet (113b) is arranged close to the first air outlet (112c), and the second air outlet (113c) is arranged away from the first air outlet (112c).
8. The air conditioner according to any one of claims 1 to 7, characterized in that: The air conditioner (100) comprises a first air guide plate (152) and a second air guide plate (154); the first air guide plate (152) is rotatably connected to the shell (110) above the first air outlet (112c); the second air guide plate (154) is rotatably connected to the shell (110) below the first air outlet (112c); the first air guide plate (152) and the second air guide plate (154) can open or close the first air outlet (112c) at the same time.
9. The air conditioner according to claim 8, characterized in that: When the air conditioner (100) operates in a strong cooling mode, the first fan (130) operates at a first speed, and the first air guide plate (152) and the second air guide plate (154) open the first air outlet (112c); Wherein, the first air guide plate (152) is located at a maximum angle, and the second air guide plate (154) is located at a maximum angle.
10. The air conditioner according to claim 8, characterized in that: When the air conditioner (100) operates in a comfort cooling mode, the first fan (130) operates at a second speed, and the first air guide plate (152) and the second air guide plate (154) open the first air outlet (112c); Wherein, the first air guide plate (152) is arranged horizontally or tilted upward, and the second air guide plate (154) is arranged horizontally or tilted upward.
11. The air conditioner according to claim 8, characterized in that: When the air conditioner (100) operates in a strong heating mode, the first fan (130) operates at a third speed, and the first air guide plate (152) and the second air guide plate (154) open the first air outlet (112c); Wherein, the second air guide plate (154) is located at a maximum angle, and the first air guide plate (152) is parallel to the second air guide plate (154).
12. The air conditioner according to claim 8, characterized in that: When the air conditioner (100) operates in a comfort heating mode, the first fan (130) operates at a fourth speed, and the first air guide plate (152) and the second air guide plate (154) open the first air outlet (112c); Wherein, the first air guide plate (152) is arranged to be tilted downward, and the second air guide plate (154) is arranged to be tilted downward.
13. The air conditioner according to any one of claims 1 to 7, characterized in that: The air conditioner (100) further comprises a third air guide plate (160), wherein the third air guide plate (160) is rotatably connected to the housing (110), and when the air conditioner (100) operates in a comfort cooling mode or a comfort heating mode, the second fan (140) operates and the third air guide plate (160) opens the second air outlet (113c).
14. A method for controlling air flow, characterized in that: Applied to the air conditioner (100) according to any one of claims 1 to 7, the air outlet control method comprises: Get the ambient temperature value; Calculating the difference between the ambient temperature value and the set temperature value; If the difference is greater than or equal to a preset difference, controlling the first fan (130) and the first air outlet (112c) to be turned on, and the second fan (140) and the second air outlet (113c) to be turned off; If the difference is smaller than the preset difference, the first fan (130), the first air outlet (112c), the second fan (140) and the second air outlet (113c) are controlled to open.
15. The air outlet control method according to claim 14, characterized in that: The air conditioner (100) comprises a first air guide plate (152), a second air guide plate (154) and a third air guide plate (160); the first air guide plate (152) is rotatably connected to the shell (110) above the first air outlet (112c); the second air guide plate (154) is rotatably connected to the shell (110) below the first air outlet (112c); and the third air guide plate (160) is rotatably connected to the shell (110) at the second air outlet (113c).
16. The air outlet control method according to claim 15, characterized in that: If the air conditioner (100) operates in a cooling mode, the steps of controlling the first fan (130) and the first air outlet (112c) to be turned on, and the second fan (140) and the second air outlet (113c) to be turned off include: The first fan (130) is controlled to run at a first speed, the second fan (140) is turned off, the first air guide plate (152) is located at a maximum angle, the second air guide plate (154) is located at a maximum angle, and the third air guide plate (160) is turned off.
17. The air outlet control method according to claim 15, characterized in that: If the air conditioner (100) operates in a cooling mode, the step of controlling the first fan (130), the first air outlet (112c), the second fan (140) and the second air outlet (113c) to open comprises: The first fan (130) operates at a second speed, the second fan (140) operates at a fifth speed, the first air guide plate (152) is arranged horizontally or tilted upward, the second air guide plate (154) is arranged horizontally or tilted upward, and the third air guide plate (160) opens the second air outlet (113c).
18. The air outlet control method according to claim 15, characterized in that: If the air conditioner (100) operates in a heating mode, the step of controlling the first fan (130) and the first air outlet (112c) to be turned on, and the second fan (140) and the second air outlet (113c) to be turned off comprises: The first fan (130) is controlled to run at a third speed, the second fan (140) is turned off, the second air guide plate (154) is located at a maximum angle, the first air guide plate (152) is parallel to the second air guide plate (154), and the third air guide plate (160) closes the second air outlet (113c).
19. The air outlet control method according to claim 15, characterized in that: If the air conditioner (100) operates in a heating mode, the step of controlling the first fan (130), the first air outlet (112c), the second fan (140) and the second air outlet (113c) to open comprises: The first fan (130) is controlled to run at a fourth speed and the second fan (140) is controlled to run at a sixth speed, the first air guide plate (152) is set to be tilted downward, the second air guide plate (154) is set to be tilted downward, and the third air guide plate (160) opens the second air outlet (113c).