Air conditioner indoor unit and air conditioner with same

Abstract

The application discloses an air conditioner indoor unit and an air conditioner with the same. The air conditioner indoor unit comprises an indoor unit body, a fresh air pipe, an air guide pipe, a fresh air heater and an auxiliary heater. The indoor unit body is provided with an air inlet. An exhaust end of the fresh air pipe is communicated with the air inlet. The fresh air pipe is suitable for guiding outdoor fresh air to the air inlet. An air inlet end of the air guide pipe is communicated with the indoor unit body. An exhaust end of the air guide pipe is communicated with the air inlet. The air guide pipe is suitable for guiding indoor air to the air inlet. The fresh air heater is arranged at the air inlet to heat the airflow flowing into the air inlet. The auxiliary heater selectively heats the indoor air flowing to the air inlet in the air guide pipe. The indoor air is heated and guided to the air inlet through the air guide pipe and the auxiliary heater. The indoor air is mixed with the fresh air flowing to the air inlet from the fresh air pipe. The temperature of the fresh air is preliminarily increased. The airflow is heated twice through the fresh air heater. The heating effect on the fresh air is good. The temperature of the fresh air is greatly increased. The user's comfort is good.

Description

Technical Field

[0001] This invention relates to the field of household appliances, and in particular to an indoor air conditioning unit and an air conditioner having the same. Background Technology

[0002] Existing air conditioners have a fresh air system that introduces fresh outdoor air into the room to improve user comfort. However, when used in abnormal weather conditions, such as winter, the pure fresh air entering the room can cause discomfort. Therefore, some air conditioners also have a fresh air heating function, placing a heater at the fresh air inlet to reduce the heating of the outdoor fresh air flowing into the air conditioner. However, due to the structural size limitations of the air conditioner, the heater is not large enough, resulting in insufficient heating of the fresh air. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide an air conditioning indoor unit that provides a large amount of heating for fresh air, thereby increasing the temperature of the incoming fresh air and improving user comfort.

[0004] Another object of the present invention is to provide an air conditioner.

[0005] An indoor air conditioning unit according to an embodiment of the present invention includes: an indoor unit body having an air inlet; a fresh air duct having an exhaust end connected to the air inlet and adapted to guide outdoor fresh air to the air inlet; a duct guide having an air inlet connected to the room and an exhaust end connected to the air inlet and adapted to guide indoor air to the air inlet; a fresh air heater and an auxiliary heater, the fresh air heater being disposed at the air inlet to heat the airflow flowing into the air inlet, and the auxiliary heater selectively heating indoor air flowing into the air inlet within the duct guide.

[0006] According to an embodiment of the present invention, the indoor unit of the air conditioner heats the indoor air and directs it to the air inlet by setting an air duct and an auxiliary heater. The air is then mixed with the fresh air flowing from the fresh air duct to the air inlet, which initially increases the temperature of the fresh air. The air is then heated a second time by the fresh air heater, resulting in a good heating effect on the fresh air, a significant increase in the temperature of the fresh air, a higher temperature of the fresh air entering the room, and better user comfort.

[0007] In some implementations, the air inlet includes: a first air inlet and a second air inlet, the exhaust end of the fresh air duct is connected to the first air inlet, the air inlet end of the air guide duct is connected to the second air inlet, the exhaust end of the air guide duct is connected to the first air inlet, and the air guide duct is adapted to guide at least a portion of the indoor air flowing into the second air inlet to the first air inlet.

[0008] In some embodiments, the air duct is provided with an air guide channel, and the auxiliary heater is disposed within the air guide channel.

[0009] Specifically, the indoor unit of the air conditioner further includes an auxiliary fan, which is disposed on the air duct to direct at least a portion of the indoor air from the second air inlet to the first air inlet.

[0010] In some embodiments, the indoor unit of the air conditioner further includes a fresh air control box, which is disposed adjacent to the air inlet end of the air duct.

[0011] In some embodiments, the exhaust end of the air duct may be selectively connected to the first air inlet or a channel within the fresh air duct.

[0012] Specifically, when the exhaust end of the air duct is connected to the channel inside the fresh air duct, the auxiliary heater stops working.

[0013] Furthermore, a first pipe is provided between the exhaust end of the air duct and the first air inlet, and a second pipe is provided between the exhaust end of the air duct and the fresh air duct.

[0014] Optionally, the exhaust end of the air duct is provided with an air duct valve, which is adapted to direct the indoor air in the air duct to the first pipeline or the second pipeline.

[0015] In some embodiments, the indoor unit of the air conditioner further includes a humidification device, wherein the indoor unit body is provided with an air inlet channel communicating with the air inlet, and the humidification device is disposed in the air inlet channel; the hot airflow flowing into the air inlet can heat the humidification device.

[0016] An air conditioner according to an embodiment of the present invention includes an indoor unit as described in any of the preceding claims.

[0017] According to the embodiments of the present invention, by setting the above-mentioned indoor unit, the air conditioner has a large amount of fresh air heating capacity, a high fresh air inlet temperature, and better user comfort.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a perspective view of the indoor unit of an air conditioner according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the operation of the indoor unit of an air conditioner in heating mode according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the operation of the indoor unit of an air conditioner in heat dissipation mode according to an embodiment of the present invention;

[0023] Figure 4 This is an exploded view of the structure of an air conditioner indoor unit according to an embodiment of the present invention;

[0024] Figure 5 This is an installation diagram of the fresh air duct and the fresh air electrical control box according to an embodiment of the present invention;

[0025] Figure 6 This is a front view of an indoor air conditioning unit according to an embodiment of the present invention;

[0026] Figure 7 It is based on Figure 6 The example shown is a CC section view;

[0027] Figure 8 This is a top view of an indoor air conditioning unit according to an embodiment of the present invention;

[0028] Figure 9 It is based on Figure 8 The example shown is a DD cross-sectional view;

[0029] Figure 10 This is a side view of an indoor air conditioning unit according to an embodiment of the present invention;

[0030] Figure 11 It is based on Figure 10 The example shown is a BB cross-sectional view;

[0031] Figure 12 This is a cross-sectional view of the fresh air duct according to an embodiment of the present invention.

[0032] Figure label:

[0033] Air conditioner indoor unit 100

[0034] Indoor unit body 1, air inlet 11, first air inlet 111, second air inlet 112, air outlet 12.

[0035] 2. Fresh air duct; 21. Fresh air adapter

[0036] Air duct 3, fresh air junction box 30, first pipe 31, second pipe 32, air duct valve 33, heating valve 331, heat dissipation valve 332.

[0037] Auxiliary heater 41, auxiliary fan 42, heat dissipation protective cover 43, transfer fan 44, air guide plate 441

[0038] 5. Fresh air electrical control box

[0039] Fresh air heater 6

[0040] Humidifier 7, water tank 71, wet film 72,

[0041] Temperature and humidity sensor 8

[0042] Indoor unit fan 9, Detailed Implementation

[0043] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0044] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, "first feature" and "second feature" may include one or more of the features. In the description of this invention, "a plurality of" means two or more.

[0045] The following is for reference. Figures 1-12 An air conditioning indoor unit 100 according to an embodiment of the present invention is described.

[0046] An air conditioning indoor unit 100 according to an embodiment of the present invention includes: an indoor unit body 1, a fresh air duct 2, a guide duct 3, a fresh air heater 6, and an auxiliary heater 41. The indoor unit body 1 is provided with an air inlet 11. The exhaust end of the fresh air duct 2 is connected to the air inlet 11. The fresh air duct 2 is adapted to guide outdoor fresh air to the air inlet 11. The air inlet end of the guide duct 3 is connected to the indoor air. The exhaust end of the guide duct 3 is connected to the air inlet 11. The guide duct 3 is adapted to guide indoor air to the air inlet 11. The fresh air heater 6 is provided at the air inlet 11 to heat the airflow flowing into the air inlet 11. The auxiliary heater 41 can selectively heat the indoor air flowing into the air inlet 11 within the guide duct 3.

[0047] The indoor unit 1 is equipped with an air inlet 11. Since the indoor unit 100 is located indoors, indoor airflow can flow into the indoor unit 1 through the air inlet 11 and exchange heat with the indoor heat exchanger inside the indoor unit 1. The fresh air duct 2 connects to the outside air at its inlet and to the air inlet 11 at its exhaust end. The fresh air duct 2 directs outdoor fresh air to the air inlet 11, thus guiding it to the indoor unit 1 located indoors. The fresh air then flows into the indoor unit 1 through the air inlet 11 and exchanges heat with the indoor heat exchanger inside. By setting up the fresh air duct 2, outdoor fresh air can flow into the room, increasing air circulation speed, improving indoor air quality, and enhancing user comfort. Furthermore, the fresh air duct 2 directly directs outdoor fresh air to the air inlet 11, ensuring that the fresh air exchanges heat with the indoor heat exchanger before being exhausted indoors. This does not affect the normal operation of the indoor unit 100 and does not reduce the user experience. In certain weather conditions, such as winter, when the indoor unit 100 of the air conditioner operates in heating mode, the outdoor fresh air temperature is low. Even after heat exchange with the indoor heat exchanger, the fresh air remains cold, lowering the indoor temperature and reducing the user experience. Therefore, by installing a fresh air heater 6 at the air inlet 11, the fresh air entering the air inlet 11 is first heated by the fresh air heater 6 before exchanging heat with the indoor heat exchanger. This not only increases the fresh air temperature but also extends the lifespan of the indoor heat exchanger. It is understandable that the fresh air heater 6 can heat not only the fresh air flowing into the air inlet 11 but also the indoor air flowing in from the air inlet 11. Therefore, the fresh air heater 6 can be used not only when fresh air is introduced into the room but also when the indoor unit 100 is circulating indoor air.

[0048] However, due to the size of the indoor unit 100 of the air conditioner and the consideration of energy saving, the fresh air heater 6 is small in size and has low power, so its heating effect on fresh air is limited. When fresh air enters the air inlet 11 at extremely low temperatures, the fresh air heater 6 cannot quickly raise the temperature of the fresh air, which will still affect the user experience.

[0049] This embodiment of the invention further heats the fresh air by setting up an air duct 3 and an auxiliary heater 41, thereby rapidly increasing the temperature of the fresh air entering the room from the exhaust end of the fresh air duct 2 and improving the user experience.

[0050] The air inlet of the air duct 3 is connected to the indoor unit, and the exhaust end of the air duct 3 is connected to the air inlet 11. The air duct 3 guides the indoor air to the air inlet 11. The auxiliary heater 41 heats the indoor air flowing from the air duct 3 to the air inlet 11. The heated indoor air is then mixed with fresh air at the air inlet 11 and enters the indoor unit 1 together from the air inlet 11, thereby increasing the temperature of the airflow flowing into the air inlet 11. The heated indoor air flowing from the air duct 3 to the air inlet 11 only provides initial heating for the fresh air. Subsequently, the airflow flowing into the indoor unit 1 from the air inlet 11 is heated a second time by the fresh air heater 6, thereby increasing the amount of fresh air heated by the air conditioner indoor unit 100 and improving user comfort.

[0051] It is understood that the auxiliary heater 41 heats the indoor air, so the auxiliary heater 41 can quickly heat the indoor air to a higher temperature, and can achieve rapid heating of the airflow. In addition, the indoor air temperature is high, the power consumption required by the auxiliary heater 41 to heat the indoor air is low, and the auxiliary heater 41 has low energy consumption.

[0052] The auxiliary heater 41 can selectively heat the indoor air flowing from the air duct 3 towards the air inlet 11. When the fresh air heater 6 is sufficient to heat the airflow flowing in from the air inlet 11, the auxiliary heater 41 can be turned off, and only the fresh air heater 6 will provide heating. The auxiliary heater 41 and the fresh air heater 6 are independent and separately controlled. The fresh air heater 6 and the auxiliary heater 41 can be selectively turned on according to the fresh air temperature, giving the indoor air conditioning unit 100 a high level of functionality. Both the fresh air heater 6 and the auxiliary heater 41 can be used not only when fresh air is introduced into the room, but also when the indoor air conditioning unit 100 is circulating indoor air.

[0053] According to an embodiment of the present invention, the indoor unit 100 of the air conditioner heats the indoor air and directs it to the air inlet 11 by setting the air duct 3 and the auxiliary heater 41. The indoor air is mixed with the fresh air flowing from the fresh air duct 2 to the air inlet 11, which initially increases the temperature of the fresh air. Then, the airflow is heated a second time by the fresh air heater 6. The heating effect of the fresh air is good, the temperature of the fresh air is greatly increased, the temperature of the fresh air entering the room is high, and the user comfort is good.

[0054] In some specific embodiments of the present invention, such as Figure 4 As shown, the fresh air heater 6 is a PTC heating plate. The PTC heating plate is installed inside the indoor unit body 1 and adjacent to the air inlet 11. The PTC heating plate can heat the airflow.

[0055] In some embodiments of the present invention, such as Figures 1-3As shown, the air inlet 11 includes: a first air inlet 111 and a second air inlet 112. The exhaust end of the fresh air duct 2 is connected to the first air inlet 111, the air inlet end of the air guide duct 3 is connected to the second air inlet 112, and the exhaust end of the air guide duct 3 is connected to the first air inlet 111. The air guide duct 3 is adapted to guide at least a portion of the indoor air flowing into the second air inlet 112 to the first air inlet 111.

[0056] The indoor unit 100 of the air conditioner includes two air inlets 11, namely a first air inlet 111 and a second air inlet 112. The exhaust end of the fresh air duct 2 is connected to the first air inlet 111, and the fresh air duct 2 guides the outdoor fresh air to the first air inlet 111. No fresh air flows into the second air inlet 112. Therefore, the fresh air heater 6 is only installed at the first air inlet 111 to heat the airflow flowing into the first air inlet 111. The exhaust end of the air duct 3 is connected to the first air inlet 111 to mix the indoor air heated by the auxiliary heater 41 with the fresh air, thus initially heating the fresh air.

[0057] Furthermore, this invention connects the air inlet end of the air duct 3 to the second air inlet 112, guiding at least a portion of the indoor air flowing into the second air inlet 112 to the first air inlet 111. It is understood that no fresh air will flow into the second air inlet 112; only indoor air will flow in from the second air inlet 112. Therefore, by connecting the air inlet end of the air duct 3 to the second air inlet 112, this invention can guide indoor air to the first air inlet 111 through the air duct 3, thereby reducing the structural modifications to the air conditioner indoor unit 100 and lowering the structural volume of the air conditioner indoor unit 100.

[0058] In some specific embodiments of the present invention, the indoor unit body 1 is also provided with an air outlet 12, such as Figures 1-3 As shown in the attached diagram, the first air outlet 12 and the second air outlet 12 are respectively located on the left and right sides of the indoor unit body 1, and the air outlet 12 is located on the front side of the indoor unit body 1. The air conditioner indoor unit 100 has air intake on both sides and air outlet on the front.

[0059] In some embodiments of the present invention, an air guide channel is provided inside the air guide duct 3, and an auxiliary heater 41 is disposed inside the air guide channel. An air guide channel is formed inside the air guide duct 3, and the auxiliary heater 41 is disposed inside the air guide channel to heat the indoor air flowing from the second air inlet 112 to the first air inlet 111 inside the air guide duct 3.

[0060] In some embodiments of the present invention, the indoor unit 100 of the air conditioner further includes an auxiliary fan 42, which is disposed on the air duct 3 to guide at least a portion of the indoor air from the second air inlet 112 to the first air inlet 111. The auxiliary fan 42 drives the indoor air from the air inlet end of the air duct 3 to the air outlet end of the air duct 3. In some specific embodiments of the present invention, the auxiliary fan 42 is disposed within the air duct to drive the airflow within the air duct.

[0061] In some specific embodiments of the present invention, such as 2 and Figure 5 As shown, the air duct 3 is constructed as a fresh air transfer box 30. The fresh air transfer box 30 has an air duct inside, and the auxiliary heater 41 and the auxiliary fan 42 are both located in the air duct inside the fresh air transfer box 30.

[0062] In some embodiments of the present invention, such as Figure 5 and Figure 1 As shown, the indoor unit 100 of the air conditioner also includes a fresh air control box 5, which is located near the air inlet of the air duct 3. The fresh air control box 5 is suitable for controlling the fresh air system of the indoor unit 100 of the air conditioner of the present invention, such as controlling the opening and closing and power of the fresh air heater 6. The present invention sets the air inlet of the air duct 3 near the fresh air control box, and the auxiliary fan 42 in the air duct 3 drives the airflow from the air inlet of the air duct 3 to the exhaust pipe of the air duct 3. During the flow of the airflow, the heat of the fresh air control box 5 located at the air inlet of the air duct 3 can be carried away, thereby improving the heat dissipation speed of the fresh air control box 5 and improving the working stability of the fresh air control box 5.

[0063] In some specific embodiments of the present invention, the air inlet of the fresh air adapter box 30 is positioned adjacent to the fresh air electrical control box 5, the fresh air adapter box 30 is located at the upper end of the fresh air electrical control box 5, and a heat dissipation protective cover 43 is also provided between the air inlet of the fresh air adapter box 30 and the fresh air electrical control box 5 to increase the airflow velocity and accelerate the heat dissipation of the fresh air electrical control box 5.

[0064] In some embodiments of the present invention, the exhaust end of the air duct 3 may be selectively connected to the first air inlet 111 or the channel in the fresh air duct 2. The exhaust end of the air duct 3 may be connected to the first air inlet 111 or the channel in the fresh air duct 2.

[0065] The following is for reference. Figure 2The working process of the indoor unit 100 of the air conditioner in the heating state is described as follows: When the exhaust end of the air duct 3 is connected to the first air inlet 111, the auxiliary heater 41 is turned on and the auxiliary fan 42 is turned on. Part of the airflow flowing in from the second air inlet 112 flows into the exhaust end of the air duct 3 after passing through the fresh air control box 5 and being driven by the auxiliary fan 42. The airflow carries away the heat generated by the fresh air control box 5 when it is working, accelerating the heat dissipation of the fresh air control box 5. Subsequently, the airflow flows in the air duct and is heated by the auxiliary heater 41. The heated indoor air flows along the air duct under the drive of the auxiliary heater 41 and flows from the exhaust end of the air duct 3 to the first air inlet 111, thereby mixing with the fresh air at the first air inlet 111 and initially heating the fresh air.

[0066] The following is for reference. Figure 3 The working process of the indoor unit 100 of the air conditioner in heat dissipation mode is described. When the exhaust end of the air duct 3 is connected to the channel in the fresh air duct 2, the auxiliary heater 41 stops working and the auxiliary fan 42 turns on. Part of the airflow flowing in from the second air inlet 112 flows through the fresh air control box 5 and then flows into the exhaust end of the air duct 3 under the drive of the auxiliary fan 42. The airflow carries away the heat generated by the fresh air control box 5 when it is working, accelerating the heat dissipation of the fresh air control box 5. Subsequently, the airflow flows in the air duct under the drive of the auxiliary fan 42 and flows from the exhaust end of the air duct 3 to the channel in the fresh air duct 2. Therefore, the airflow after heat exchange with the fresh air control box 5 can directly flow from the fresh air duct 2 to the outside, improving the heat dissipation speed of the fresh air control box 5.

[0067] The air conditioner indoor unit 100 of this embodiment of the invention connects the exhaust end of the air duct 3 to a channel in the first air inlet 111 or the fresh air duct 2, which can not only heat the indoor air and then pre-heat the fresh air to increase the heating capacity of the fresh air, but also switch the connection of the exhaust end of the air duct 3 to increase the heat dissipation speed of the fresh air electrical control box 5. By adding an air duct 3 as a single component, multiple functions can be achieved. This not only improves the functionality of the air conditioner indoor unit 100, but also does not increase the structural size of the air conditioner indoor unit 100, making it convenient for the use and placement of the air conditioner indoor unit 100.

[0068] In some specific embodiments of the present invention, such as Figure 2 and Figure 3 As shown, a first pipe 31 is provided between the exhaust end of the air duct 3 and the first air inlet 111, and a second pipe 32 is provided between the exhaust end of the air duct 3 and the fresh air duct 2. When the indoor unit 100 of the air conditioner is in heating mode, the exhaust end of the air duct 3 is connected to the first air inlet 111, and the heated indoor air flows from the exhaust end of the air duct 3 through the first pipe 31 to the first air inlet 111; when the indoor unit 100 of the air conditioner is in heat dissipation mode, the exhaust end of the air duct 3 is connected to the channel inside the fresh air duct 2, and the heated indoor air flows from the exhaust end of the air duct 3 through the second pipe 32 into the channel inside the fresh air duct 2.

[0069] In some embodiments of the present invention, when the indoor unit 100 of the air conditioner is in heat dissipation mode, the exhaust end of the fresh air duct 2 is closed to prevent the heat dissipation airflow from the exhaust end of the fresh air duct 2 from flowing back into the room, thereby improving the heat dissipation speed.

[0070] In other embodiments, such as Figure 3 As shown, when the indoor unit 100 of the air conditioner is in heat dissipation mode, the exhaust end of the fresh air duct 2 is opened, and the indoor unit fan 9 is also turned on. The indoor unit fan 9 reverses, and the fresh air duct 2 directs the indoor air to the outside, which can not only dissipate heat for the fresh air electrical control box 5, but also improve the heat dissipation speed of the indoor unit body 1.

[0071] In some specific embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the fresh air duct 2 is connected to the indoor unit 1 via a fresh air adapter 21. The fresh air adapter 21 has a bent structure. The fresh air duct 2 extends horizontally, and the adapter guides the horizontally flowing fresh air in the fresh air duct 2 vertically to the first air inlet 111. A second pipe 32 is provided between the exhaust end of the air duct 3 and the fresh air duct 2. The second pipe 32 is connected to the fresh air adapter 21, so that the heated indoor air flows into the channel in the fresh air duct 2 through the fresh air adapter 21.

[0072] In some specific embodiments of the present invention, such as Figure 12 As shown, the bottom wall of the fresh air duct 2 has an upward protrusion. By setting the protrusion, the airflow velocity in the fresh air duct 2 increases when it flows in the fresh air duct 2, thereby improving the airflow speed and the heating or heat dissipation efficiency.

[0073] In some embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the exhaust end of the air duct 3 is equipped with an air duct valve 33. The air duct valve 33 is suitable for guiding the indoor air in the air duct 3 to the first pipe 31 or the second pipe 32. By controlling the air duct valve 33, the airflow direction in the air duct 3 can be controlled. When the air conditioner indoor unit 100 needs to perform the heating function, the air duct valve 33 guides the indoor air in the air duct 3 to the first pipe 31. When the air conditioner indoor unit 100 needs to perform the heat dissipation function, the air duct valve 33 guides the indoor air in the air duct 3 to the second pipe 32.

[0074] In some embodiments of the present invention, a duct valve 33 is disposed at the exhaust end of the air duct 3 and divides the exhaust end of the air duct 3 into a heating exhaust end and a cooling exhaust end. The heating exhaust end is connected to the first pipe 31, and the cooling exhaust end is connected to the second pipe 32. The duct valve 33 controls the opening and closing of the heating exhaust end and the cooling exhaust end to guide the indoor air in the air duct 3 to the first pipe 31 or the second pipe 32. When the duct valve 33 closes the heating exhaust end and opens the cooling exhaust end, the duct valve 33 guides the indoor air in the air duct 3 to the second pipe 32 to achieve heat dissipation for the fresh air electrical control box 5; when the duct valve 33 closes the cooling exhaust end and opens the heating exhaust end, the duct valve 33 guides the indoor air in the air duct 3 to the first pipe 31 to achieve heating of the fresh air.

[0075] In some specific embodiments of the present invention, the duct valve 33 has a heat dissipation position that closes the heating exhaust end and opens the heat dissipation exhaust end, and a heating position that closes the heat dissipation exhaust end and opens the heating exhaust end; such as Figure 1 As shown, the duct valve 33 includes a heating valve 331 and a cooling valve 332. Both the heating valve 331 and the cooling valve 332 are plate-shaped. One end of the heating valve 331 and one end of the cooling valve 332 are connected to each other to form a connecting part. The connecting part is located at the exhaust end of the air duct 3 and is rotatably connected to the air duct 3. Therefore, the heating valve 331 and the cooling valve 332 can rotate with the connection point between the connecting part and the air duct 3 as the rotation center. The duct valve 33 can rotate between the heat dissipation position and the heating position. When the duct valve 33 is in the heating position, the cooling valve 332 closes the heat dissipation exhaust end, and the heating valve 331 opens the heating exhaust end. When the duct valve 33 is in the heat dissipation position, the cooling valve 332 opens the heat dissipation exhaust end, and the heating valve 331 closes the heating exhaust end.

[0076] In some specific embodiments of the present invention, the air duct 3 is constructed as a fresh air transfer box 30, which includes a base plate and a cover plate. The base plate and the cover plate together define the air duct channel inside the fresh air transfer box 30. The base plate includes an auxiliary fan 42 mounting part and an auxiliary heater 41 mounting part. The auxiliary fan 42 mounting part is adjacent to the air inlet end of the air duct channel, and the auxiliary heater 41 mounting part is farther away from the air inlet end of the air duct channel than the auxiliary fan 42 mounting part. An air guide part is also provided between the auxiliary heater 41 mounting part and the air duct valve 33 to guide the airflow to the air duct valve 33.

[0077] In some specific embodiments of the present invention, such as Figure 1As shown, the indoor unit 100 of the air conditioner also includes a transfer fan plate 44, which is connected between the air duct 3 and the first pipe 31, and between the air duct 3 and the second pipe 32. It is understood that the duct valve 33 separates the exhaust end of the air duct 3 into a heating exhaust end and a cooling exhaust end. Directly connecting the first pipe 31 and the second pipe 32 to the heating exhaust end and the cooling exhaust end results in poor airtightness and is prone to airflow leakage. Therefore, by setting the transfer fan plate 44 between the heating exhaust end and the first pipe 31, and between the cooling exhaust end and the second pipe 32, airflow leakage can be reduced, and the operational stability of heating and cooling operations can be improved.

[0078] The transfer fan plate 44 includes a transfer air inlet connected to the exhaust end of the air guide duct 3, a first transfer exhaust port connected to the first pipe 31, and a second transfer exhaust port connected to the second pipe 32, such as... Figure 2 As shown, a guide plate 441 is also provided inside the transfer fan plate 44. One end of the guide plate 441 is connected to the transfer air inlet 11 and divides the transfer air inlet 11 into two parts. The other end of the guide plate 441 is connected to the inner side wall of the transfer fan plate 44. The guide plate 441 divides the internal air duct of the transfer fan plate 44 into two. Therefore, the airflow entering the transfer fan plate 44 from the heating exhaust end and the heat dissipation exhaust end will flow along the guide plate 441 to the first pipe 31 and the second pipe 32, and will not be slowed down inside the transfer fan plate 44, thus avoiding airflow leakage.

[0079] Preferably, the cross-section of the air guide plate 441 is wave-shaped. The air guide plate 441 has a good guiding effect on the airflow, increases the airflow velocity, avoids the airflow from flowing turbulently in the internal air duct of the transfer fan plate 44, and reduces the heating or heat dissipation rate.

[0080] In some specific embodiments of the present invention, the indoor unit 100 of the air conditioner further includes a humidification device 7. The indoor unit body 1 is provided with an air inlet channel communicating with the air inlet 11. The humidification device 7 is disposed in the air inlet channel. After the airflow enters the air inlet 11, it flows along the air inlet channel. The humidification device 7 can humidify the airflow. By setting the humidification device 7, the humidification of the airflow can be reduced when the indoor air is dry, thereby improving the user's comfort.

[0081] In some specific embodiments of the present invention, such as Figure 1As shown, the humidifier 7 includes a water tank 71 and a wet film 72. It can be understood that the humidifier 7 is filled with water when it is working, and the humidity of the airflow increases as it passes through. Even when the indoor unit 100 of the air conditioner is turned off, the humidifier 7 remains relatively damp. When the indoor unit 100 is not used for a long time, bacteria can easily grow on the humidifier 7, polluting the indoor air and harming the user's health. This invention heats the airflow flowing into the air inlet 11 by setting a fresh air heater 6 and an auxiliary heater 41, delivering hot air to the humidifier 7. This allows the humidifier 7 to dry quickly, preventing bacterial growth on the humidifier 7 when the indoor unit 100 is not used for a long time, improving the cleanliness of the humidifier 7, and enhancing user comfort.

[0082] In addition, when the humidifier 7 is working, the airflow flowing into the air inlet 11 is heated by the fresh air heater 6 and the auxiliary heater 41. The hot airflow delivered to the humidifier 7 can increase the evaporation rate of water on the humidifier 7, increase the amount of humidification of the airflow by the humidifier 7, and improve the working efficiency of the humidifier 7.

[0083] In some specific embodiments of the present invention, such as Figure 4 As shown, the air conditioner indoor unit 100 also includes a temperature and humidity sensor 8. The temperature and humidity sensor 8 is installed inside the air conditioner indoor unit 100 to detect the temperature and humidity of the airflow, and can accurately control the temperature and humidity of the airflow coming out of the air conditioner indoor unit 100, thereby improving user comfort.

[0084] An air conditioner according to an embodiment of the present invention includes an indoor unit 100 of any of the above-mentioned features.

[0085] According to the embodiment of the present invention, by setting the above-mentioned air conditioner indoor unit 100, the air conditioner has a large amount of fresh air heating capacity, a high fresh air inlet temperature, and the air conditioner indoor unit 100 has a large amount of air conditioning capacity, resulting in better user comfort.

[0086] Other components of the air conditioner indoor unit 100 according to embodiments of the present invention, such as the auxiliary heater 41 and the fresh air control box 5, as well as their operation, are known to those skilled in the art and will not be described in detail here.

[0087] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0088] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: The indoor unit body has an air inlet. The fresh air duct has an exhaust end connected to the air inlet, and the fresh air duct is adapted to guide outdoor fresh air to the air inlet; An air duct, wherein the air inlet end of the air duct is connected to the room and the air outlet end of the air duct is connected to the air inlet, and the air duct is adapted to guide the indoor air to the air inlet; A fresh air heater and an auxiliary heater, wherein the fresh air heater is disposed at the air inlet to heat the airflow flowing into the air inlet, and the auxiliary heater can selectively heat the indoor air flowing into the air inlet within the air duct; The air inlet includes: a first air inlet and a second air inlet, the exhaust end of the fresh air duct is connected to the first air inlet, the air inlet end of the air guide duct is connected to the second air inlet, the exhaust end of the air guide duct is connected to the first air inlet, and the air guide duct is adapted to guide at least a portion of the indoor air flowing into the second air inlet to the first air inlet. The fresh air electrical control box is located near the air inlet end of the air duct; The exhaust end of the air duct can be selectively connected to the first air inlet or the channel inside the fresh air duct.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The air duct is provided with an air guiding channel, and the auxiliary heater is installed in the air guiding channel.

3. The indoor unit of the air conditioner according to claim 2, characterized in that, Also includes: An auxiliary fan is provided on the air duct to direct at least a portion of the indoor air from the second air inlet to the first air inlet.

4. The indoor unit of the air conditioner according to claim 1, characterized in that, When the exhaust end of the air duct is connected to the channel inside the fresh air duct, the auxiliary heater stops working.

5. The indoor unit of the air conditioner according to claim 1, characterized in that, A first pipe is provided between the exhaust end of the air duct and the first air inlet, and a second pipe is provided between the exhaust end of the air duct and the fresh air duct.

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The exhaust end of the air duct is equipped with an air duct valve, which is adapted to direct the indoor air in the air duct to the first pipeline or the second pipeline.

7. The indoor unit of the air conditioner according to claim 1, characterized in that, It also includes: a humidifier, wherein the indoor unit body is provided with an air inlet channel communicating with the air inlet, and the humidifier is disposed in the air inlet channel; the hot airflow flowing into the air inlet can heat the humidifier.

8. An air conditioner, characterized in that, Includes the air conditioning indoor unit as described in any one of claims 1-7.

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