WO2023065693A1

WO2023065693A1 - Fresh air fan and air-conditioner indoor unit

Info

Publication number: WO2023065693A1
Application number: PCT/CN2022/098942
Authority: WO
Inventors: 闫秀洁; 王永涛; 张蕾; 尹晓英
Original assignee: 青岛海尔空调器有限总公司; 青岛海尔空调电子有限公司; 海尔智家股份有限公司
Priority date: 2021-10-20
Filing date: 2022-06-15
Publication date: 2023-04-27
Also published as: CN113899020A

Abstract

A fresh air fan (20) and an air-conditioner indoor unit. The fresh air fan (20) is configured to be mounted inside a casing of an air-conditioner indoor unit, and the fresh air fan (20) comprises a housing (100), wherein the housing (100) defines an accommodating space, and is provided with a fresh air inlet (110), which is used for sucking in fresh airflow, and a plurality of fresh air outlets, which are used for discharging the fresh airflow, and at least one fresh air outlet is provided with a humidifying device (210), so that the airflow flowing out through the fresh air outlets (120, 130) can take away moisture from the humidifying device (210). The fresh air fan (20) has the plurality of fresh air outlets (120, 130), and the plurality of fresh air outlets (120, 130) output air at the same time, so that the fresh air fan (20) outputs air more smoothly, the air strength is stronger, the fresh air volume of the air-conditioner indoor unit is larger, and the renewal speed of indoor air is increased. The humidifying device (210) can at least provide moisture for an indoor space while heating, so as to prevent the moisture of indoor air from being critically lost with a temperature rise, which causes the indoor air to get drier. Certainly, the moisture can also be supplied to the indoor space while refrigerating.

Description

Fresh air fan and air conditioner indoor unit

technical field

The invention relates to the technical field of air conditioning, in particular to a fresh air blower and an air conditioner indoor unit.

Background technique

Some existing air conditioners have a fresh air function. That is, the pipeline is used to introduce outdoor fresh air into the air conditioner indoor unit, and then the fresh air is blown to the room under the action of the fan, so that the indoor air is kept fresh and comfortable, and the user's comfort experience is improved. The fresh air function of existing air conditioners is mostly a single outlet, and the air outlet direction is single. Specifically, a traditional air conditioner uses a single-outlet fresh air fan placed at one end of the air conditioner, and the air inlet uses a hose to lead to the outside to introduce fresh air. The indoor outlet of the fresh air fan blows directly into the room and mixes with the indoor air. Due to the demand for light and thin air conditioners, the size of the indoor unit is limited, and the fresh air volume cannot be increased by increasing the size of the fresh air fan, resulting in insufficient fresh air volume for the air conditioner, which cannot provide a better user experience. That is to say, the traditional air conditioner has only one fresh air outlet, and in the case of limited volume, it cannot achieve a larger air volume, the fresh air volume is insufficient, and the fresh air update speed is slow. For greater air volume, the fan speed needs to be increased, resulting in high fan speed, high power consumption, and high noise; and there is only one new air outlet, and the air resistance is large, so it is impossible to achieve large air volume supply. In addition, the fresh air module of existing air conditioners often only has the fresh air function, that is, mechanically introduces outdoor air into the room, thereby achieving the purpose of increasing the oxygen content of the indoor air. However, when the air conditioner enters the heating mode, the indoor air moisture increases with the temperature. The loss is serious, and the indoor air is getting drier.

Contents of the invention

The object of the present invention is to provide a fresh air blower and an air conditioner indoor unit that overcome the above problems or at least partially solve the above problems, so as to accelerate the fresh air update speed.

A further object of the present invention is to prevent the indoor air from getting drier.

In one aspect, the present invention provides a fresh air blower for being installed inside the casing of an air conditioner indoor unit, wherein the fresh air blower includes a casing, the casing defines an accommodating space and defines a fresh air inlet for sucking fresh air flow and a plurality of fresh air outlets for discharging the fresh air flow, at least one of the fresh air outlets is provided with a humidifying device, so that the airflow flowing out of the fresh air outlet takes away the moisture from the humidifying device.

Optionally, the humidifying device includes a water storage device, and the airflow flowing out of the corresponding fresh air outlet takes away moisture when passing through the water storage device.

Optionally, the water storage device is an accommodating chamber, and the airflow flowing out of the corresponding fresh air outlet passes the water surface of the water in the accommodating chamber and takes away moisture; or, the water storage device is an accommodating chamber, and the accommodating A water-stirring wheel is provided in the cavity, and the water-stirring wheel stirs the water, so that the airflow flowing out of the corresponding fresh air outlet takes away the moisture from the humidifying device; or,

The water storage device is a water storage carrier on which moisture is adsorbed, and the water storage carrier is a water-absorbing curtain made of breathable fleece and gauze that are easy to absorb water.

Optionally, the humidifying device includes a water tank and an ultrasonic atomization module disposed in the water tank, and the water tank has a water mist outlet for sending water mist into the airflow flowing out of the corresponding fresh air outlet.

Optionally, the housing also defines an air return port for inhaling non-fresh air;

The fresh air fan is configured to allow the fresh air inlet and the return air outlet to be opened simultaneously or alternatively.

Optionally, the housing includes a volute and a purification case, the two are abutted against each other and communicate with each other in the internal space;

The volute is provided with the impeller of the fresh air fan, and the volute is provided with the plurality of fresh air outlets; and

The purification shell is provided with the fresh air inlet and the return air outlet, and a purification module is arranged in it, so that the fresh air inhaled from the fresh air inlet passes through the purification module and then flows to the impeller;

The plurality of fresh air outlets are located at different positions in the circumferential direction of the volute, and the fresh air inlet is opened on the peripheral surface of the purification shell.

Optionally, the fresh air inlet is adjacent to the return air outlet; and the fresh air fan further includes:

A rotating baffle, which is rotatably installed between the fresh air inlet and the return air outlet, so as to be rotated to a position for closing the fresh air inlet to open the return air outlet; or to be rotated to a position for closing the return air outlet , to open the fresh air inlet; and

The motor is configured to controlly drive the rotating baffle to rotate.

On the other hand, the present invention also provides an air-conditioning indoor unit, which includes a casing and a fresh air blower as described in any one of the above;

The fresh air fan is arranged in the casing, the fresh air inlet is connected to the outdoor space through a pipeline to introduce fresh air, and the plurality of fresh air outlets are used to discharge the fresh air to the inner space of the casing and/or the indoor space.

Optionally, the air-conditioning indoor unit is a wall-mounted air-conditioning indoor unit, and the casing extends along a horizontal and transverse direction;

The air conditioner indoor unit also includes an air guiding rod, which is fixedly arranged under the casing, and is in the shape of a hollow rod extending along the length direction of the casing, and an air guiding cavity is formed in it, and the air guiding rod is set There are strip-shaped fresh air outlets extending along its length;

One of the fresh air outlets of the fresh air blower is connected to one end of the air guiding rod, so that part of the fresh air flows into the air guiding cavity, and then blows to the indoor space through the fresh air outlet.

The bottom of the casing is provided with a first fresh air outlet, the upper part of the front surface is provided with a second fresh air outlet, and the upper surface is provided with a third fresh air outlet, and the number of the fresh air outlets of the fresh air fan is three, Connect the first fresh air outlet, the second fresh air outlet and the third fresh air outlet respectively;

The fresh air blower is arranged at one end in the longitudinal direction of the casing.

In the fresh air blower and air conditioner indoor unit of the present invention, the fresh air blower has multiple fresh air outlets, and the plurality of fresh air outlets emit air at the same time, so that the fresh air blower of the fresh air blower is smoother, the wind is stronger, and the fresh air volume of the air conditioner indoor unit is larger. Accelerated the renewal speed of indoor air. Moreover, increasing the fresh air outlet also reduces the wind resistance. Under the same air volume, increasing the fresh air outlet will also reduce the speed of the fresh air fan, so that its power consumption and noise will be lower.

Further, in the fresh air fan and the air conditioner indoor unit of the present invention, due to the humidification device, it can at least provide moisture to the room while heating, so as to prevent serious loss of moisture in the indoor air as the temperature rises, making the indoor air drier. Of course, moisture can also be provided to the room while cooling.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a schematic structural view of a fresh air blower according to an embodiment of the present invention;

Fig. 2 is a schematic exploded view of a partial structure of the fresh air fan shown in Fig. 1;

Fig. 3 is a schematic structural diagram of the humidifying device in the fresh air fan shown in Fig. 1;

Fig. 4 is a schematic diagram of the state of the purification case in Fig. 1 when the baffle is turned to open the fresh air inlet;

Fig. 5 is a schematic diagram of the state of the purification case in Fig. 1 when the baffle is turned to open the air return port;

Fig. 6 is a schematic structural diagram of an air conditioner indoor unit according to an embodiment of the present invention;

Fig. 7 is a schematic diagram of the air conditioner indoor unit shown in Fig. 6 after part of the casing is cut away.

Fig. 8 is a schematic diagram of the assembly of the fresh air fan and the air guide rod in Fig. 6;

Fig. 9 is an exploded schematic view of Fig. 8;

Fig. 10 is a partial structural schematic diagram of an air conditioner indoor unit according to an embodiment of the present invention;

Fig. 11 is a schematic sectional view of the air conditioner indoor unit shown in Fig. 10 .

Detailed ways

Reference will now be made in detail to embodiments of the invention, one or more examples of which are illustrated in the accompanying drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in this invention without departing from the scope or spirit of this invention. For example, features illustrated or described as part of one embodiment can be used with another embodiment to yield still a further embodiment. Thus, it is intended that the present invention covers such modifications and changes as come within the scope of the appended claims and their equivalents.

The following describes the fresh air blower and air conditioner indoor unit according to the embodiment of the present invention with reference to FIG. 1 to FIG. 11 . Among them, the orientation or positional relationship indicated by "front", "rear", "upper", "lower", "top", "bottom", "inner", "outer", "horizontal", etc. are based on the The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present invention .

The terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined as "first", "second", etc. may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. When a feature "comprises or comprises" one or some of the features it encompasses, unless specifically stated otherwise, this indicates that other features are not excluded and that other features may be further included.

An embodiment of the present invention provides a fresh air blower, which is used to be installed inside an air conditioner indoor unit. The air conditioner indoor unit is used to adjust indoor air, such as cooling, heating, dehumidification, introducing fresh air, and so on. The fresh air fan is used to introduce the outdoor fresh air into the interior of the air conditioner indoor unit. The fresh air flows through the air conditioner indoor unit and blows into the indoor space to complete the renewal of the air in the indoor space and keep the air in the indoor space fresh, which is beneficial to human health.

The air-conditioning indoor unit may be an indoor part of a split-type room air conditioner that utilizes a vapor compression refrigeration cycle system for cooling/heating. The air conditioner indoor unit is provided with an evaporator and a heat exchange fan. The evaporator and throttling device are connected with the compressor, condenser and other refrigerating components arranged in the outdoor housing of the air conditioner through pipelines to form a vapor compression refrigerating cycle system. Under the action of the heat exchange fan, the indoor air enters the casing of the indoor unit of the air conditioner, and after completing forced convection heat exchange with the evaporator, heat exchange air is formed, and then blows to the heat exchange air outlet of the casing, and finally blows to the indoor space , to complete the air conditioning process of the indoor space. The indoor unit of the air conditioner may be wall-mounted, floor-standing, ceiling-mounted, window-mounted, etc., and the present invention is not limited thereto.

FIG. 1 is a schematic structural diagram of a fresh air blower 20 according to an embodiment of the present invention; FIG. 2 is a schematic exploded view of a partial structure of the fresh air blower 20 shown in FIG. 1 .

As shown in FIG. 1 and FIG. 2 , the fresh air fan 20 of the embodiment of the present invention may generally include a casing 100 . The casing 100 defines an accommodating space for accommodating various components inside the fresh air blower 20 , such as the impeller 300 and the like. The shell 100 is also provided with a fresh air inlet 110 for sucking fresh air and a plurality of fresh air outlets for discharging fresh air. For example, as shown in FIGS. 1 to 2 , two fresh air outlets, such as a fresh air outlet 120 and a fresh air outlet 130 , may be provided. The fresh air inlet 110 can be connected to the outdoor space through a preset pipeline (fresh air pipe 40). In some embodiments, three fresh air outlets, four fresh air outlets, etc. can be set. The fresh air outlet can directly discharge the fresh air flow to the inside of the casing 10 of the air-conditioning indoor unit (with or without mixing with the heat-exchanging airflow), so that the fresh air flows through the casing 10 of the air-conditioning indoor unit to be discharged to the indoor space . Alternatively, the fresh air outlet can also be directly extended to the indoor space, so that the fresh air can be discharged directly to the indoor space.

In the embodiment of the present invention, among the fresh air blower 20 and the air conditioner indoor unit, the fresh air blower 20 has a plurality of fresh air outlets, and the plurality of fresh air outlets emit air at the same time, so that the air output of the fresh air blower 20 is smoother and the wind force is stronger, so that the air conditioner indoor unit The fresh air volume is larger, which speeds up the renewal speed of indoor air. Moreover, the increase in the number of fresh air outlets will also reduce the air outlet resistance of the fresh air flow. Under the same air volume, increasing the fresh air outlet will also reduce the rotation speed of the fresh air fan 20, so that its power consumption and noise will be lower.

In particular, as shown in FIG. 1 , at least one fresh air outlet is provided with a humidifying device 210 , so that the airflow flowing out of the fresh air outlet takes away moisture from the humidifying device 210 . For example, a humidifier 210 is provided at the fresh air outlet 130 . The heating device can be arranged in the corresponding fresh air outlet, as shown in FIG. 1 . In some optional embodiments, the heating device may be disposed outside the corresponding fresh air outlet, for example, disposed outside the casing 100 .

In some embodiments of the present invention, the humidifying device 210 includes a water storage device, and the airflow flowing out of the corresponding fresh air outlet 130 takes away moisture when passing through the water storage device. For example, the water storage device is an accommodating chamber, and the airflow flowing out of the corresponding fresh air outlet passes through the surface of the water in the accommodating chamber and takes away moisture. Also for example, the water storage device is an accommodation chamber, and a water stirring wheel is arranged in the accommodation chamber, and the water stirring wheel stirs the water, so that the airflow flowing out of the corresponding fresh air outlet takes away the moisture from the humidifying device 210 . Also for example, the water storage device is a water storage carrier, moisture is adsorbed on the water storage carrier, and the water storage carrier is a water absorption curtain. The water-absorbing curtain is made of breathable fleece and gauze that are easy to absorb water.

FIG. 3 is a schematic structural diagram of the humidifying device 210 in the fresh air blower 20 shown in FIG. 1 . For example, the water storage device may be a water tank 211 . As shown in Fig. 3, in some other embodiments of the present invention, the humidifying device 210 includes a water tank 211, a control panel and an ultrasonic atomization module 214 arranged in the water tank 211. The water mist outlet 215 that transports water mist in the airflow of the fresh air outlet. When the air conditioner indoor unit turns on the heating mode and selects the humidification function, the humidifying device 210 is automatically turned on, and operates synchronously with the fresh air fan 20, and the fresh air drives water mist to flow into the indoor space to increase the indoor air humidity. The ultrasonic atomization module 214 may include a transducer device. The humidifying device 210 adopts the principle of ultrasonic vibration humidification, utilizes the piezoelectric effect of the transducing device itself, and the control panel excites the transducing device through the oscillating circuit, so that the vibrating plate generates ultrasonic frequency mechanical vibration, and then transmits the vibration into the water through the vibrating plate , making the liquid water atomized to realize the humidification function.

In some embodiments of the present invention, the housing 100 includes a volute 101 and a purification case 102 , which are abutted against each other and communicate with each other in the internal space, as shown in FIG. 1 . The impeller 300 of the fresh air blower 20 is arranged inside the volute 101 , and the volute 101 is provided with a plurality of fresh air outlets. The purification shell 102 is provided with a fresh air inlet 110 , and a purification module 200 is disposed therein to allow the fresh air inhaled from the fresh air inlet 110 to flow through the purification module 200 , and then flow to the impeller 300 after being purified. The purification module 200 can be a filter module to filter out harmful impurities in the fresh air flow. The purification module 200 may also have other processing functions to further process the fresh air flow to make it fresher and healthier.

As shown in FIG. 1 and FIG. 2 , the volute 101 and the purification case 102 can be made to be flat and connected in parallel in the thickness direction, and the two can be connected and fastened by screws. A plurality of fresh air outlets are located at different positions in the circumferential direction of the volute 101 so as to discharge air in different directions. The fresh air inlet 110 is set on the peripheral surface of the purification shell 102, so that the structural layout of the fresh air fan 20 is more reasonable and compact, and the whole fresh air fan 20 takes up less space.

The impeller 300 can be a centrifugal impeller, and the end of the volute 101 in the thickness direction (x-axis direction) facing the purification case 102 is provided with a suction port 1012 . Purification case 102 is open to one side facing volute 101, so that the cover is buckled on volute 101, and the edges are sealed and connected, and the internal space is communicated. The purification module 200 is covered by the purification case 102 . Under the action of the rotation of the impeller 300 , the fresh air flow enters the purification case 102 from the fresh air inlet 110 of the purification case 102 , flows through the purification module 200 to be purified by it, and then enters the volute 101 from the suction port 1012 . Under the action of the impeller 300 , the purified air flow is thrown out radially from the impeller 300 , and then discharged out of the volute 101 through a plurality of fresh air outlets. Of course, the impeller 300 can also be an axial flow impeller or other forms of impellers, and its specific structure will not be repeated here.

A socket 140 is opened on the front side of the purification case 102 to allow the purification module 200 to be inserted into the purification case 102 through the socket 140 . In this way, the user can easily clean and replace the purification module 200 by disassembling the front panel of the air conditioner indoor unit casing 10 , and the operation is very convenient.

In some embodiments of the present invention, as shown in FIGS. 1 and 2 , a socket 140 is provided on the peripheral surface of the purification case 102 to allow the purification module 200 to be inserted into the purification case 102 through the socket 140 to facilitate the installation of the purification module 200. Clean and replace.

4 is a schematic diagram of the state of the purification case 102 in FIG. 1 when the rotating baffle 190 opens the fresh air inlet 110; FIG. 5 is a schematic view of the state of the purification case 102 in FIG.

In some embodiments of the present invention, as shown in FIG. 1 , FIG. 4 and FIG. 5 , the housing 100 also defines a return air outlet 150 for inhaling non-fresh air, which can be opened on the purification case 102 . In one solution, as shown in FIG. 1 , FIG. 4 , and FIG. 5 , the air return port 150 is located at the bottom of the casing 100 and opens downward to suck in the heat exchange airflow inside the casing 10 . In another solution not shown in the figure, the air return port can also be directed towards the heat exchange air inlet 11 of the casing 10 to suck in the indoor air without heat exchange.

The fresh air fan 20 is configured to allow the fresh air inlet 110 and the return air outlet 150 to be opened simultaneously or alternatively. Specifically, for example, in the solutions shown in FIG. 4 and FIG. 5 , one of the fresh air inlet 110 and the return air outlet 150 can be opened, that is, when one is opened, the other is closed. In this way, when the indoor unit of the air conditioner operates in the fresh air mode, the fresh air inlet 110 is opened, the return air outlet 150 is closed, and all the fresh air entering the fresh air fan 20 is fresh air. When there is no demand for fresh air in the room, the fresh air inlet 110 is closed and the air return port 150 is opened, so that the fresh air fan 20 undertakes the blowing work of the heat exchange airflow, so as to speed up the indoor cooling/heating speed.

In another solution not shown in the figure, the fresh air inlet 110 and the return air outlet 150 can also be opened at the same time, so that the fresh air flow and the heat exchange air flow are mixed in the fresh air fan 20 and then blown out. The mixing process of fresh air and other airflows is completed in advance, which speeds up the renewal speed of indoor air.

In a word, the setting of the return air outlet 150 greatly enriches the functions of the fresh air blower 20, and the design is very ingenious.

As shown in FIG. 4 and FIG. 5 , in some embodiments of the present invention, the fresh air inlet 110 and the return air outlet 150 are adjacent to each other. The fresh air fan 20 also includes a rotating baffle 190 and a motor 180 . The rotating baffle plate 190 is rotatably installed between the fresh air inlet 110 and the air return port 150, so as to rotate to the position of closing the fresh air inlet 110 to open the return air port 150, as shown in Figure 4; Open the fresh air inlet 110, as shown in Figure 5. The motor 180 is configured to drive the rotary baffle 190 to rotate in a controlled manner. Certainly, when the rotating baffle 190 is rotated to the intermediate state shown in FIG. 3 and FIG. 4 , both the fresh air inlet 110 and the return air outlet 150 are opened. In this embodiment, the fresh air inlet 110 and the return air outlet 150 can be controlled only by setting a rotating baffle 190 and a motor 180, and the structure is very simple and practical.

The embodiment of the present invention also provides an air conditioner indoor unit. The air conditioner indoor unit may generally include a casing 10 and a fresh air blower 20 . The fresh air blower 20 can be the fresh air blower 20 of any of the above embodiments. The fresh air blower 20 is arranged inside the casing 10 . The fresh air inlet 110 communicates with the outdoor space, and the multiple fresh air outlets are used to discharge the fresh air to the inner space of the casing 10 and/or the indoor space. That is, the fresh air outlet can discharge the fresh air to the inside of the casing 10 , and then discharge it to the indoor space through the opening of the casing 10 . Alternatively, the fresh air outlet can directly discharge the suction outlet to the indoor space. Or maybe both.

The embodiment of the present invention does not limit the structural form of the air conditioner indoor unit. Whether the air conditioner indoor unit is a wall-mounted air conditioner indoor unit, a floor-standing air conditioner indoor unit, a ceiling-mounted air conditioner indoor unit or other types, it can match the implementation of the present invention. The fresh air fan 20 of example.

FIG. 6 is a schematic structural diagram of an air-conditioning indoor unit according to an embodiment of the present invention; FIG. 7 is a schematic diagram of the air-conditioning indoor unit shown in FIG. 6 after part of the casing 10 is cut away.

In the embodiment shown in FIG. 6 and FIG. 7 , the air conditioner indoor unit is a wall-mounted air conditioner indoor unit, and the casing 10 is in the shape of a strip arranged horizontally along the length direction (x-axis direction). The top of the casing 10, such as the upper surface, is provided with a heat exchange air inlet 11 for inhaling indoor air, and the bottom is provided with a heat exchange air outlet 12 for discharging heat exchange air. Both the heat exchange air inlet 11 and the heat exchange air outlet 12 can be long strips whose length direction is parallel to the length direction of the casing 10 . Under the action of the heat exchange fan (not shown), the indoor air enters the casing 10 through the heat exchange air inlet 11, and then exchanges heat with the evaporator (not shown) to form a heat exchange airflow (cold air during cooling, When it is hot, it is hot air), and finally the heat-exchanging air is forced to be discharged to the indoor space through the heat-exchanging air outlet 12, and the cooling or heating of the indoor space is completed. An air deflector 50 may be provided at the heat exchange air outlet 12 to guide the air outlet direction.

As shown in Figure 6 and Figure 7, for the wall-mounted air conditioner indoor unit, the bottom of the casing 10 can be provided with a first fresh air outlet 18, and the upper surface of the casing 10 can be provided with a third fresh air outlet 13, the fresh air The fan 20 has two fresh air outlets, which are respectively connected to the first fresh air outlet 18 and the third fresh air outlet 13 . As shown in Figure 10 and Figure 11, can make the bottom of casing 10 be provided with the first fresh air outlet 18, and make the front surface top of casing 10 be provided with the second fresh air outlet 19, the fresh air outlet of fresh air fan 20 There are two in number, connected to the first fresh air outlet 18 and the second fresh air outlet 19 respectively. Specifically, the fresh air outlet 120 is connected to the second fresh air outlet 19 , and the fresh air outlet 130 is connected to the first fresh air outlet 18 . In some optional embodiments of the present invention, the bottom of the casing 10 is provided with a first fresh air outlet, the top of the front surface of the casing 10 is provided with a second fresh air outlet 19, and the upper surface of the casing 10 is provided with a third fresh air outlet. There are three fresh air outlets 13 and three fresh air outlets of the fresh air blower 20, which are respectively connected to the first fresh air outlet, the second fresh air outlet 19 and the third fresh air outlet 13.

FIG. 8 is an assembly schematic diagram of the fresh air blower 20 and the air guiding rod 30 in FIG. 6 ; FIG. 9 is an exploded schematic diagram of FIG. 8 . For better air guidance, as shown in FIGS. 6 to 9 , in some embodiments of the present invention, the wall-mounted air conditioner indoor unit may further include an air guide rod 30 . The air guiding rod 30 is fixedly arranged under the casing 10 and is in the shape of a hollow rod extending along the length direction of the casing 10 , and an air guiding cavity is formed therein. The air guide rod 30 is provided with a strip-shaped fresh air outlet 31 extending along its length direction. A fresh air outlet 130 of the fresh air blower 20 is opened downwards, and is connected to one end of the air guide rod 30 so that part of the fresh air flow enters the air guide cavity, and then blows to the indoor space through the fresh air outlet 31 . Alternatively, the first fresh air outlet 18 is connected to one end of the air guiding rod 30 . As shown in FIG. 9 , both ends of the air guiding rod 30 can be bent upwards to connect with the casing 10 . The bent part (the left end of the figure) of one end of the air guide rod 30 is the opening 32 of the air guide cavity, the opening 32 is connected with the fresh air outlet 130, and the bent part of the end is connected to the casing 10 through the connecting rod 35 on the outer wall. Connect or clamp to achieve fixation. The bending part at the other end is also provided with a connecting rod 35 , but a blocking wall is provided inside it to block the air guide cavity and prevent the heat exchange air flow from entering the air guide cavity. Further, the width of the fresh air outlet 31 can be made smaller than the width of the air guiding cavity, so that the fresh air can be blown out of the fresh air outlet 31 at an accelerated speed, and the blowing distance can be longer.

The embodiment of the present invention makes the fresh air flow faster and has its own air outlet channel. If the indoor unit of the air conditioner only operates in the fresh air mode and does not need cooling/heating, it also avoids the trouble of opening the heat exchange outlet 12 of the air conditioner. . On the basis of understanding the above embodiments, those skilled in the art should easily know the structure and position of the air guiding cavity, and the symbols are omitted in the drawings.

The heat exchange air outlet 12 can be located above the fresh air outlet 31 and arranged in parallel with it, so that the heat exchange air flow can meet and mix with the fresh air air flow in front of the casing 10 through the guiding effect of the air deflector 50, which enhances the A mixture of the two. As shown in Figures 6 to 9, the fresh air fan 20 can be arranged at one end (i.e., the left end or the right end) of the inside of the casing 10 in the length direction, the volute 101 and the purification casing 102 are flat, and the thickness direction is along the direction of the casing. The lengths of the shells 10 extend to meet each other, so that they occupy less space in the shell 10 .

The fresh air inlet 110 is connected with a fresh air pipe 40 , and the fresh air pipe 40 passes through the casing 10 to extend to an outdoor space for introducing fresh air. The third fresh air outlet 13 is located on the left or right side of the heat exchange air inlet 11 so as not to affect the normal layout of the heat exchange air inlet 11 .

Fig. 10 is a partial structural diagram of an air-conditioning indoor unit according to an embodiment of the present invention; Fig. 11 is a schematic sectional view of the air-conditioning indoor unit shown in Fig. 10 . In some embodiments of the present invention, the first fresh air outlet 18 and the heat exchange outlet 12 are sequentially arranged along the horizontal and transverse direction. That is to say, the first fresh air outlet 18 is provided outside one end of the heat exchange outlet 12 . Such setting makes the air supply of the first fresh air outlet 18 and the air supply of the heat exchange air outlet 12 more similar, and even makes the air supply more consistent, which can make the fresh air supply distance farther, and it is easier to reach the position of the human body. Optionally, the structure can also be set so that the fresh air from the first fresh air outlet 18 is more divergent, easily attracted by the heat exchange air from the air conditioner, and better mixed with the heat exchange air from the air conditioner. The hot air is used for air supply, the air supply distance is longer, and the circulation speed is faster.

In some embodiments, the heat exchanging air outlet 12 may be opened at the front bottom of the casing and extend along a horizontal horizontal direction. When the air deflector 50 is in a closed state, it covers the heat exchange outlet 12 and the first fresh air outlet 18 . The air deflector 50 can guide the fresh air from the first fresh air outlet 18 , so that the fresh air can easily flow with the heat exchanging air or mix with the heat exchanging fresh air. The shielding function of the wind deflector 50 can also make the air conditioner indoor unit more beautiful.

For example, the casing 10 may include a cover, a frame, an air intake grill, two end covers and a front panel. The casing is installed on the frame, the evaporator and the fan are installed between the casing and the frame, the air intake grill is arranged on the upper end of the casing and the frame, the front panel is installed on the front side of the casing, and the two end covers are installed on the casing , frame, air intake grille and the lateral ends of the front panel. Further, the casing has two false air passages 16 arranged at intervals along the horizontal horizontal direction; the heat exchange air outlet 12 is arranged on the casing, and the heat exchange air outlet 12 is located between the two false air passages 16 . That is to say, the aforementioned heat exchanging air outlet 12 is opened on the casing, and the structures on both lateral sides of the heat exchanging air outlet 12 may be called false air duct portions 16 . The first fresh air outlet 18 is arranged on a false air duct, which can make the structure of the air-conditioning indoor unit compact, easy to design, can make full use of the structure of the existing air-conditioning indoor unit, and reduce costs.

In this embodiment, for the setting position of the second fresh air outlet 19, the second fresh air outlet 19 can be arranged at the upper corner position close to the lateral end surface of the casing 10, so that its height is higher, so that the fresh air can flow out. After that, the air supply distance is farther. The front of the casing 10 generally refers to the front surface of the front panel. Correspondingly, the inside of the second fresh air outlet 19 is provided with an installation communication hole 17 . The third fresh air outlet 13 may be disposed between the heat exchange air inlet 11 and the lateral end surface of the casing 10 . The third fresh air outlet 13 is located on the lateral side of the heat exchange air inlet, as shown on the left side of the figure, to reduce its impact on the normal layout of the heat exchange air inlet 11, heat exchange air outlet 12, evaporator, and heat exchange fan. Influence.

In some implementations of the present invention, the first fresh air outlet 18 is composed of a plurality of microholes, which can disperse the fresh air. In other specific embodiments, the first fresh air outlet 18 is provided with horizontal ribs and/or vertical ribs to separate the first fresh air outlet 18 into multiple air outlet areas, which can realize long-distance air supply. . In some optional embodiments, the first fresh air outlet 18 is a relatively large hole without any structure inside. Similarly, the second fresh air outlet 19 is formed by arranging and combining a plurality of micro holes, or the second fresh air outlet 19 is provided with horizontal ribs and/or vertical ribs to separate the second fresh air outlet 19 Multiple outlet areas. Each structure of the first fresh air outlet 18 and each structure of the second fresh air outlet 19 can be used in conjunction with each other, and the structures and functions can be different. Preferably, each structure of the first fresh air outlet 18 and each structure of the second fresh air outlet 19 have the same function, are composed of micro-holes, or are provided with separating ribs inside. The arrangement and combination of multiple micro-holes can also make the casing 10 more beautiful, and avoid opening a large opening to affect the appearance of the casing 10 .

So far, those skilled in the art should appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, without departing from the spirit and scope of the present invention, the disclosed embodiments of the present invention can still be used. Many other variations or modifications consistent with the principles of the invention are directly identified or derived from the content. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

A fresh air fan is used to be installed inside the casing of an air conditioner indoor unit, wherein,

The fresh air blower includes a casing, the casing defines an accommodation space and is provided with a fresh air inlet for inhaling a fresh air flow and a plurality of fresh air outlets for discharging a fresh air flow, at least one of the fresh air outlets is provided with a humidifying device, so that The airflow flowing out of the fresh air outlet takes away the moisture from the humidifying device.
Fresh air blower according to claim 1, wherein,

The humidifying device includes a water storage device, and the airflow flowing out of the corresponding fresh air outlet takes away moisture when passing through the water storage device.
The fresh air blower according to claim 2, wherein,

The water storage device is a storage chamber, and the airflow flowing out of the corresponding fresh air outlet passes the water surface of the water in the storage chamber and takes away the water; or, the water storage device is a storage chamber, and the storage chamber is provided with A water stirring wheel, the water stirring wheel stirs the water, so that the airflow flowing out of the corresponding fresh air outlet takes away the moisture from the humidifying device; or,

The water storage device is a water storage carrier, moisture is adsorbed on the water storage carrier, and the water storage carrier is a water absorption curtain.
Fresh air blower according to claim 1, wherein,

The humidifying device includes a water tank and an ultrasonic atomization module arranged in the water tank, and the water tank has a water mist outlet for sending water mist into the airflow flowing out of the corresponding fresh air outlet.
The fresh air fan according to any one of claims 1-4, wherein,

The housing also defines an air return port for inhaling non-fresh air;

The fresh air fan is configured to allow the fresh air inlet and the return air outlet to be opened simultaneously or alternatively.
The fresh air blower according to claim 5, wherein,

The fresh air inlet is adjacent to the return air outlet; and the fresh air fan also includes:

A rotating baffle, which is rotatably installed between the fresh air inlet and the return air outlet, so as to be rotated to a position for closing the fresh air inlet to open the return air outlet; or to be rotated to a position for closing the return air outlet , to open the fresh air inlet; and

The motor is configured to controlly drive the rotating baffle to rotate.
The fresh air blower according to claim 5 or 6, wherein,

The shell includes a volute and a purification shell, the two are abutted against each other and communicated with each other in the internal space;

The volute is provided with the impeller of the fresh air fan, and the volute is provided with the plurality of fresh air outlets; and

The purification shell is provided with the fresh air inlet and the return air outlet, and a purification module is arranged in it, so that the fresh air inhaled from the fresh air inlet passes through the purification module and then flows to the impeller;

The plurality of fresh air outlets are located at different positions in the circumferential direction of the volute, and the fresh air inlet is opened on the peripheral surface of the purification shell.
An air conditioner indoor unit, comprising a casing and the fresh air blower according to any one of claims 1 to 7;

The fresh air fan is arranged in the casing, the fresh air inlet is connected to the outdoor space through a pipeline to introduce fresh air, and the plurality of fresh air outlets are used to discharge the fresh air to the inner space and/or indoor space of the casing .
The air conditioner indoor unit according to claim 8, wherein:

The air conditioner indoor unit is a wall-mounted air conditioner indoor unit, and the casing extends horizontally and transversely;

The air conditioner indoor unit also includes an air guiding rod, which is fixedly arranged under the casing, and is in the shape of a hollow rod extending along the length direction of the casing, and an air guiding cavity is formed in it, and the air guiding rod is set There are strip-shaped fresh air outlets extending along its length;

One of the fresh air outlets of the fresh air blower is connected to one end of the air guiding rod, so that part of the fresh air flows into the air guiding cavity, and then blows to the indoor space through the fresh air outlet.
The air conditioner indoor unit according to claim 8 or 9, wherein,

The air conditioner indoor unit is a wall-mounted air conditioner indoor unit, and the casing extends horizontally and transversely;

The bottom of the casing is provided with a first fresh air outlet, and/or, the upper part of the front surface of the casing is provided with a second fresh air outlet, and/or, the upper surface of the casing is provided with a third fresh air outlet. Air outlets, the number of the fresh air outlets of the fresh air fan is three, respectively connected to the first fresh air outlet, the second fresh air outlet and the third fresh air outlet;

The fresh air blower is arranged at one end in the longitudinal direction of the casing.