Air conditioner indoor unit and kitchen air conditioner

Abstract

The utility model provides an air conditioner indoor unit and a kitchen air conditioner, relates to the technical field of air conditioners, and aims to solve the problems that an existing kitchen air conditioner is large in size and is difficult to install in the mode that only part of aluminum buckle plates are detached after a ceiling is hung. The air conditioner indoor unit comprises a shell, a heat exchanger and a wind wheel assembly. The shell is provided with an inner cavity, an air induction opening and an air supply opening. The heat exchanger is arranged in the inner cavity and comprises a first side wall, a second side wall and a third side wall which are sequentially arranged in a U shape, a mounting cavity is defined by the first side wall, the second side wall and the third side wall, and the wind wheel assembly is arranged in the mounting cavity; the air inducing opening comprises a first air opening opposite to the first side wall, a second air opening opposite to the second side wall and a third air opening opposite to the third side wall, an air outlet panel is arranged on the lower portion of the shell, the air supply opening is formed in the air outlet panel, and an air outlet of the wind wheel assembly faces downwards. The aluminum gusset plate is small in size and can be installed after a ceiling is hung by only removing part of the aluminum gusset plate.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and more specifically, to an indoor air conditioner and a kitchen air conditioner. Background Art

[0002] In summer, it is extremely hot, especially in southern regions where the high temperature approaches 40°C in summer. Coupled with the heat source in the cooking area, the kitchen is unbearably hot. Consumers have a need to install kitchen air conditioners, and with the trend of global warming, the demand for kitchen air conditioners by consumers is increasing day by day. The area of a household kitchen is usually small and the space is limited. It is very troublesome to install an air conditioner after ceiling installation. Therefore, it is necessary to redesign the structure of the air conditioner to make it suitable for the installation scenario in the kitchen. At present, some manufacturers are already producing and selling kitchen air conditioners, but there are various types, and there is no relatively unified structural design like wall-mounted units. Each has its own advantages and disadvantages, and there is still room for improvement and exploration.

[0003] Among the existing kitchen air conditioners, there is a direct air outlet type kitchen air conditioner, such as the Chinese patent with the application number 202221690816.8. The lower surface of its panel is integrally provided with an air outlet and a return air outlet. During installation, there is no need to connect the air outlet of the indoor unit and the air outlet with pipes, and the loss of cooling capacity during air supply is small. However, the panel area exceeds the size of the aluminum gusset plate, the volume of the indoor unit is large, and it can only be installed before ceiling installation, or the ceiling needs to be damaged for installation. It may also interfere with the existing ceiling pipes in the kitchen, resulting in inability to install. In order to be able to install after ceiling by only removing some aluminum gusset plates, the structure of its indoor unit still needs to be optimized. Summary of the Utility Model

[0004] The first object of the utility model is to provide an indoor air conditioner to solve the technical problem that the existing kitchen air conditioner has a large volume and is difficult to install after ceiling by only removing some aluminum gusset plates.

[0005] The indoor air conditioner provided by the utility model includes a housing, a heat exchanger and a wind wheel assembly. Among them, the housing has an inner cavity, an air inlet and an air outlet; the heat exchanger is arranged in the inner cavity. The heat exchanger includes a first side wall, a second side wall and a third side wall arranged in a U shape in sequence. The first side wall, the second side wall and the third side wall enclose an installation cavity, and the wind wheel assembly is arranged in the installation cavity; the air inlet includes a first air inlet opposite to the first side wall, a second air inlet opposite to the second side wall and a third air inlet opposite to the third side wall. An air outlet panel is arranged at the lower part of the housing, the air outlet is opened on the air outlet panel, and the air outlet of the wind wheel assembly faces downward and is opposite to and communicated with the air outlet.

[0006] By setting up an air conditioner indoor unit mainly composed of a housing, a heat exchanger and a wind wheel assembly, when the air conditioner indoor unit needs to operate, the wind wheel assembly starts, generating negative pressure in the inner cavity of the housing, so that external air flow can enter the inner cavity simultaneously through a first air inlet opposite to the first side wall, a second air inlet opposite to the second side wall and a third air inlet opposite to the third side wall, exchange heat with the heat exchanger, and then be directly discharged into the room through an air outlet opened on the air outlet panel.

[0007] By setting up a heat exchanger with a U-shaped structure in the air conditioner indoor unit, an installation cavity that can accommodate the wind wheel assembly is formed inside it, ensuring the compactness of the structure of the air conditioner indoor unit, reducing the occupation of the external space of the heat exchanger, and being beneficial to reducing the external dimensions of the air conditioner indoor unit; by opening air guiding inlets at multiple positions of the housing opposite to the heat exchanger, not only is the air intake from three sides realized to ensure the air intake volume, but also the air is taken from the space between the ceiling and the ceiling board, avoiding opening an air inlet on the air outlet panel and occupying the space of the air outlet panel, thus avoiding increasing the overall volume of the air conditioner indoor unit. Moreover, after the air flow enters from each air inlet, it can exchange heat with the corresponding area of the heat exchanger immediately, improving the heat exchange efficiency.

[0008] By directly opening the air outlet on the air outlet panel formed by the lower wall of the housing, the air outlet is located below the inner cavity. That is to say, the projection of the inner cavity in the up-down direction completely covers the air outlet, and the opening position of the air outlet is the same as the placement position of the air conditioner indoor unit. Thus, the heat-exchanged air flow in the inner cavity can be directly discharged into the room through the air outlet without additionally setting an air duct between the inner cavity and the air outlet for air outlet guiding. This not only makes the structure of the air conditioner indoor unit more compact and can be installed by only removing some aluminum gusset plates after ceiling installation, but also reduces the air outlet loss, ensures the air supply volume, and can also reduce the damage to the aluminum gusset plates in the surrounding area, playing a certain protective role for the ceiling.

[0009] Furthermore, the housing further includes a guide air door rotatably installed on the air outlet panel, and the guide air door has a closed position for blocking the air outlet and an open position for exposing the air outlet. The setting of the guide air door can block the air outlet in the shutdown state, avoiding the exposure of the components in the inner cavity, not only reducing the attachment of impurities in the inner cavity, but also ensuring the appearance integrity of the ceiling after the air conditioner indoor unit is installed on the ceiling.

[0010] Furthermore, the air conditioner indoor unit further includes a filter screen, and the filter screen is fixedly arranged at the air outlet for filtering the air flow passing through the air outlet. This setting can filter the air flow passing through the air outlet, ensuring the cleanliness of the air flow sent into the room.

[0011] Furthermore, the shell wall of the outer shell is provided with a mounting position recessed towards the inner cavity, and the electronic control box of the air conditioner indoor unit is arranged in the mounting position. This setting not only does not occupy the space outside the outer shell, but also realizes the external placement of the electronic control box. On the one hand, it enables the maintenance operation of the electronic control box to be carried out only by removing the aluminum gusset plate, without the need to disassemble the outer shell, improving the efficiency of the maintenance operation. On the other hand, it is also beneficial to the heat dissipation of the electronic control box to ensure the electronic control performance of the electronic control box. Moreover, this setting can also prevent the condensed water in the inner cavity from splashing onto the electronic control box after dripping, playing a certain waterproof protection effect on the electronic control box.

[0012] Furthermore, the outer shell further includes a left wall and a right wall that are opposite and spaced apart in the left-right direction, a front wall and a rear wall that are opposite and spaced apart in the front-rear direction, and an upper wall and a lower wall that are opposite and spaced apart in the up-down direction. The first air outlet is opened on the left wall, the second air outlet is opened on the rear wall, and the third air outlet is opened on the right wall; the left wall, the rear wall and the right wall are of an integral structure, and the upper wall and the front wall are of an integral structure. The above setting form of the outer shell makes the shape of the air conditioner indoor unit approximately a cuboid structure, which is convenient for transportation and installation inside the suspended ceiling. By setting the left wall, the rear wall and the right wall as an integral structure, and setting the upper wall and the front wall as an integral structure, not only can the number of components forming the outer shell be reduced, but also the structural strength of the outer shell can be ensured.

[0013] Furthermore, the mounting position is arranged on the front wall, the height direction of the electronic control box is parallel to the up-down direction, and the thickness direction of the electronic control box is parallel to the front-rear direction. The above installation method of the electronic control box, on the one hand, enables the maintenance of the electronic control box to be directly carried out in front of the air conditioner indoor unit when maintenance is required. The operation space is large, the vision is wide, which is convenient for the operators to carry out maintenance work. On the other hand, it can also reduce the space occupation of the air conditioner indoor unit in the front-rear direction, which is beneficial to reducing the width size of the air conditioner indoor unit.

[0014] Furthermore, the air conditioner indoor unit further includes a water receiving tray. Along the up-down direction, the water receiving tray is located between the heat exchanger and the air outlet panel; the heat exchanger is installed on the water receiving tray, the air outlet panel is fixedly connected to the water receiving tray, and the water receiving tray is provided with an avoidance opening opposite to the air supply outlet. The setting of the water receiving tray can realize the centralized collection of the condensed water generated during the operation of the heat exchanger, prevent the condensed water from dripping onto the suspended ceiling and causing damage to the suspended ceiling. Moreover, the water receiving tray can also fix the heat exchanger to ensure the working stability of the heat exchanger. By opening an avoidance opening opposite to the air supply outlet on the water receiving tray, while using the water receiving tray to receive water, it can also avoid the air supply process, ensuring the smoothness of the air supply.

[0015] Further, the air outlet panel is provided with a limiting wall surrounding the air supply opening, and the limiting wall is inserted into the avoidance opening. This setting enables the air outlet panel to be limited in the left-right direction and the front-back direction after the assembly operation of the air outlet panel is completed, preventing the air outlet panel from shifting horizontally; and / or, the water receiving tray is provided with a U-shaped water guiding area, and the U-shaped direction of the U-shaped water guiding area is the same as the U-shaped direction of the heat exchanger, and the U-shaped water guiding area slopes downward gradually from back to front; both ends of the water receiving tray in the left-right direction are provided with drain ports communicating with the U-shaped water guiding area, and the drain ports are arranged close to the front wall of the housing. The above setting of the water receiving tray realizes the gravity drainage process, eliminating the need for setting drainage power components and having low costs.

[0016] Further, the wind wheel assembly includes a biaxial motor, two wind wheels and two volutes. The two output shafts of the biaxial motor are arranged in opposite directions along the left-right direction. The two wind wheels are respectively fixedly sleeved on the two output shafts in a one-to-one correspondence. The two volutes are both fixedly connected to the housing, and the two volutes respectively cover the two wind wheels in a one-to-one correspondence. Among them, the outlet of the volute forms the air outlet of the wind wheel assembly. This setting form of the wind wheel assembly enables the external air flow path during the operation of the air conditioner indoor unit to be first through the heat exchanger, then through the wind wheel assembly, and further discharged through the air supply opening, which is a suction air flow process. Compared with the blowing air flow process of a conventional duct machine, the heat exchange effect is improved.

[0017] The second object of the present utility model is to provide an air conditioner indoor unit to solve the technical problem that the existing kitchen air conditioner has a large volume and is difficult to be installed in the form of only removing some aluminum gussets after ceiling installation.

[0018] The kitchen air conditioner provided by the present utility model includes an outdoor unit and the above-mentioned air conditioner indoor unit. The size of the housing in the left-right direction is less than 600 mm, the size of the housing in the front-back direction is less than 300 mm, and the size of the housing in the up-down direction is less than 260 mm; the air conditioner indoor unit is fixed between the ceiling and the ceiling board, and the lower surface of the air outlet panel is basically flush with the lower part of the ceiling board.

[0019] By setting the above-mentioned air conditioner indoor unit in the kitchen air conditioner, correspondingly, this kitchen air conditioner has all the advantages of the above-mentioned air conditioner indoor unit, which will not be elaborated one by one here. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0021] Figure 1 One of the external structural schematic diagrams of the air conditioner indoor unit provided by the embodiment of the present invention;

[0022] Figure 2 Another external structural schematic diagram of the air conditioner indoor unit provided by the embodiment of the present invention;

[0023] Figure 3 The top view structural sectional view of the air conditioner indoor unit provided by the embodiment of the present invention;

[0024] Figure 4 The structural exploded view of the air conditioner indoor unit provided by the embodiment of the present invention;

[0025] Figure 5 The side view structural sectional view of the air conditioner indoor unit provided by the embodiment of the present invention;

[0026] Figure 6 The structural schematic diagram of the water receiving tray of the air conditioner indoor unit provided by the embodiment of the present invention.

[0027] Explanation of reference numerals:

[0028] 100 - housing; 200 - heat exchanger; 300 - wind wheel assembly; 400 - filter screen; 500 - electric control box; 600 - water receiving tray;

[0029] 110 - inner cavity; 120 - air inlet; 121 - first air outlet; 122 - second air outlet; 123 - third air outlet; 130 - air supply outlet; 141 - air outlet panel; 1411 - limiting wall; 142 - left wall; 143 - right wall; 144 - front wall; 1441 - installation position; 145 - rear wall; 146 - upper wall; 147 - air deflector; 148 - hanging ear;

[0030] 210 - first side wall; 220 - second side wall; 230 - third side wall;

[0031] 310 - dual - axis motor; 320 - wind wheel; 330 - volute;

[0032] 610 - avoidance opening; 620 - U - shaped water guide area; 630 - drain outlet. Detailed implementation manners

[0033] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following detailed description of specific embodiments of the present utility model will be given with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not used to limit the present utility model.

[0034] Figure 1 One of the external structure schematic diagrams of the air conditioner indoor unit provided in this embodiment; Figure 2 Another external structure schematic diagram of the air conditioner indoor unit provided in this embodiment; Figure 3 The top view structural cross-sectional view of the air conditioner indoor unit provided in this embodiment. As Figures 1 to 3 shown, this embodiment provides an air conditioner indoor unit, which includes a housing 100, a heat exchanger 200, and a wind wheel assembly 300. Among them, the housing 100 has an inner cavity 110, an air inlet 120, and an air outlet 130; the heat exchanger 200 is disposed in the inner cavity 110, and the heat exchanger 200 includes a first side wall 210, a second side wall 220, and a third side wall 230 that are sequentially arranged in a U shape. The first side wall 210, the second side wall 220, and the third side wall 230 enclose an installation cavity, and the wind wheel assembly 300 is disposed in the installation cavity; the air inlet 120 includes a first air inlet 121 opposite to the first side wall 210, a second air inlet 122 opposite to the second side wall 220, and a third air inlet 123 opposite to the third side wall 230. An air outlet panel 141 is provided at the lower part of the housing 100, and the air outlet 130 is opened on the air outlet panel 141. The air outlet of the wind wheel assembly 300 faces downward and is opposite to and communicated with the air outlet 130.

[0035] When the air conditioner indoor unit needs to operate, the wind wheel assembly 300 is started, generating a negative pressure in the inner cavity 110 of the housing 100, so that the external air flow can enter the inner cavity 110 simultaneously through the first air inlet 121 opposite to the first side wall 210, the second air inlet 122 opposite to the second side wall 220, and the third air inlet 123 opposite to the third side wall 230. After heat exchange treatment with the heat exchanger 200, it is then directly discharged into the room through the air outlet 130 opened on the air outlet panel 141.

[0036] By providing a heat exchanger 200 with a U-shaped structure, an installation cavity for accommodating the impeller assembly 300 is formed inside the air conditioner indoor unit, ensuring the compactness of the structure of the air conditioner indoor unit, reducing the occupation of the external space of the heat exchanger 200, and facilitating the reduction of the external dimensions of the air conditioner indoor unit; by providing air inlets 120 at multiple positions of the housing 100 opposite to the heat exchanger 200, not only is air intake realized from three sides, ensuring the air intake volume, but also air is taken from the space between the suspended ceiling and the ceiling, avoiding the opening of air inlets on the air outlet panel 141 and occupying the space of the air outlet panel 141, thereby avoiding an increase in the overall volume of the air conditioner indoor unit. Moreover, after the air flow enters from each air inlet, it can exchange heat with the corresponding area of the heat exchanger 200 immediately, improving the heat exchange efficiency.

[0037] By directly providing the air outlet 130 on the air outlet panel 141 formed by the lower wall of the housing 100, the air outlet 130 is located below the inner cavity 110. That is to say, the projection of the inner cavity 110 in the vertical direction completely covers the air outlet 130, and the opening position of the air outlet 130 is the same as the placement position of the air conditioner indoor unit. As a result, the heat-exchanged air flow in the inner cavity 110 can be directly discharged into the room through the air outlet 130 without additionally providing an air duct between the inner cavity 110 and the air outlet 130 for air outlet guidance. This not only makes the structure of the air conditioner indoor unit more compact and allows for installation by only removing some aluminum gusset plates after ceiling installation, but also reduces the air outlet loss, ensures the air supply volume, and can reduce the damage to the aluminum gusset plates in the surrounding area, playing a certain protective role for the ceiling.

[0038] In this embodiment, the air intake and air outlet paths of the air conditioner indoor unit are as Figure 1 and Figure 2 shown by the hollow arrows.

[0039] Figure 4 is the exploded view of the structure of the air conditioner indoor unit provided in this embodiment. Please continue to refer to Figure 2 and in combination with Figure 4 , in this embodiment, the housing 100 may further include a damper 147 movably installed on the air outlet panel 141, where the damper 147 has a closed position for blocking the air outlet 130 and an open position for exposing the air outlet 130.

[0040] When the air conditioner indoor unit is in a shutdown state, the damper 147 can be in the closed position for blocking the air outlet 130 to achieve the closure of the inner cavity 110 of the housing 100 and avoid the exposure of the components in the inner cavity 110; when the air conditioner indoor unit needs to supply air to the room, the damper 147 opens to expose the air outlet 130, enabling the heat-exchanged air flow after passing through the heat exchanger 200 to be sent into the room through the air outlet 130 to achieve the corresponding cooling or heating purpose.

[0041] The setting of the above-mentioned air guide door 147 can block the air supply port 130 in the shutdown state, avoiding exposure of components in the inner cavity 110, not only reducing the adhesion of impurities in the inner cavity 110, but also ensuring the appearance integrity of the ceiling after the air conditioner indoor unit is installed on the ceiling.

[0042] Figure 5 This is a side structural cross-sectional view of the air conditioner indoor unit provided in this embodiment. Figure 2 , and combined with Figure 5 In this embodiment, the air guide door 147 is rotatably connected to the air outlet panel 141.

[0043] By setting the air guide door 147 to be rotatably connected to the air outlet panel 141, the air guide door 147 can be switched between a closed position and an open position by rotating, so that the specific angle of the downward air blowing can be adjusted. The user can choose whether the wind blows on people or avoids people by adjusting the angle of the air guide door 147. The control process is simple and the installation structure of the air guide door 147 is also simplified.

[0044] In this embodiment, a drive motor can be provided to drive the air guide door 147 to rotate. Specifically, the drive motor can be installed in the inner cavity 110 of the outer shell 100, and the motor shaft of the drive motor can be connected to the air guide door 147 by transmission, so as to realize automatic rotation of the air guide door 147 by using the drive motor.

[0045] In other embodiments, the air guide door 147 may also be configured to be slidably connected to the air outlet panel 141, and the air guide door 147 may be switched between the closed position and the open position by sliding relative to the air outlet panel 141. This configuration ensures that the opening process of the air guide door 147 does not occupy indoor space, thereby reducing the height requirement for indoor space.

[0046] Please continue to refer to Figure 4 and Figure 5 In this embodiment, the air conditioner indoor unit may further include a filter 400 . Specifically, the filter 400 is fixedly disposed at the air supply port 130 to filter the air flow passing through the air supply port 130 .

[0047] The filter 400 can filter the airflow passing through the air outlet 130, thereby ensuring the cleanliness of the airflow delivered to the room and reducing the amount of oil smoke in the room floating into the inner cavity 110 through the air outlet 130 when the air conditioner is turned on.

[0048] Please continue to refer to Figure 4 In this embodiment, the shell wall of the outer shell 100 is provided with an installation position 1441 which is recessed toward the inner cavity 110 , and the electric control box 500 of the air conditioner indoor unit is arranged at the installation position 1441 .

[0049] By providing a concave mounting position 1441 on the housing wall of the outer shell 100, not only can the electric control box 500 be mounted outside the outer shell 100, but also the space outside the outer shell 100 is hardly occupied. Among them, by arranging the electric control box 500 outside the outer shell 100, on the one hand, the maintenance operation of the electric control box 500 only needs to remove the aluminum gusset plate, without disassembling the outer shell 100, improving the maintenance operation efficiency. On the other hand, it is also beneficial to the heat dissipation of the electric control box 500 to ensure the electric control performance of the electric control box 500. Moreover, this arrangement can also prevent the condensed water in the inner cavity 110 from splashing onto the electric control box 500 after dripping, playing a certain waterproof protection effect on the electric control box 500.

[0050] Please continue to refer to Figure 4 , in this embodiment, the outer shell 100 may further include a left wall 142 and a right wall 143 that are opposite and spaced apart in the left-right direction, a front wall 144 and a rear wall 145 that are opposite and spaced apart in the front-rear direction, and an upper wall 146 and a lower wall that are opposite and spaced apart in the up-down direction. Among them, the first air outlet 121 is opened on the left wall 142, the second air outlet 122 is opened on the rear wall 145, and the third air outlet 123 is opened on the right wall 143; the left wall 142, the rear wall 145, and the right wall 143 are of an integral structure, and the upper wall 146 and the front wall 144 are of an integral structure.

[0051] The above setting form of the outer shell 100 makes the shape of the air conditioner indoor unit approximately a cuboid structure, which is convenient for transportation and installation inside the ceiling. By setting the left wall 142, the rear wall 145, and the right wall 143 as an integral structure, and setting the upper wall 146 and the front wall 144 as an integral structure, not only can the number of components forming the outer shell 100 be reduced, but also the structural strength of the outer shell 100 can be ensured.

[0052] Please continue to refer to Figure 4 , in this embodiment, the upper wall 146 is also integrally provided with a hanging ear 148.

[0053] It should be noted that in this embodiment, the "left-right direction" can be represented by the arrow ab in Figure 1 , the "front-rear direction" can be represented by the arrow cd in Figure 1 , and the "up-down direction" can be represented by the arrow ef in Figure 1 .

[0054] Please continue to refer to Figure 4 , in this embodiment, the mounting position 1441 is provided on the front wall 144, the height direction of the electric control box 500 is parallel to the up-down direction, and the thickness direction of the electric control box 500 is parallel to the front-rear direction. That is to say, in this embodiment, the electric control box 500 is longitudinally mounted on the front wall 144, and the thickness direction of the electric control box 500 is along the front-rear direction.

[0055] In the above installation method of the electronic control box 500, on the one hand, when maintenance of the electronic control box 500 is required, it can be directly carried out in front of the air conditioner indoor unit, with a large operating space and a wide field of vision, facilitating the maintenance work of the operators. On the other hand, it can also reduce the space occupied by the air conditioner indoor unit in the front-back direction, which is beneficial to reducing the width dimension B of the air conditioner indoor unit.

[0056] Please continue to refer to Figure 4 , in this embodiment, the installation position 1441 is an installation opening formed in the front wall 144.

[0057] Figure 6 FIG. is a schematic structural diagram of the water receiving tray 600 of the air conditioner indoor unit provided in this embodiment. Please continue to refer to Figure 4 , and in combination with Figure 6 , in this embodiment, the air conditioner indoor unit may further include a water receiving tray 600. Along the up-down direction, the water receiving tray 600 is located between the heat exchanger 200 and the air outlet panel 141; the heat exchanger 200 is installed on the water receiving tray 600, the air outlet panel 141 is fixedly connected to the water receiving tray 600, and the water receiving tray 600 is provided with an avoidance opening 610 opposite to the air supply opening 130.

[0058] The above setting of the water receiving tray 600 can achieve centralized collection of the condensed water generated during the operation of the heat exchanger 200, avoiding damage to the ceiling caused by the condensed water dripping onto the ceiling. Moreover, the water receiving tray 600 can also fix the heat exchanger 200 to ensure the working stability of the heat exchanger 200. By providing an avoidance opening 610 opposite to the air supply opening 130 in the water receiving tray 600, while using the water receiving tray 600 to receive water, it can also avoid the air outlet process, ensuring the smoothness of the air outlet.

[0059] Please continue to refer to Figure 4 , in this embodiment, the air outlet panel 141 is provided with a limiting wall 1411 surrounding the air supply opening 130, wherein the limiting wall 1411 is inserted into the avoidance opening 610.

[0060] During the assembly of the air conditioner indoor unit, the air outlet panel 141 can be installed from bottom to top, so that the limiting wall 1411 provided on the air outlet panel 141 is inserted into the avoidance opening 610 of the water receiving tray 600. This setting enables the air outlet panel 141 to be limited in the left-right direction and the front-back direction after the assembly operation of the air outlet panel 141 is completed, preventing the air outlet panel 141 from shifting horizontally.

[0061] Please continue to refer to Figure 4 , in this embodiment, the limiting wall 1411 is a circular ring-shaped structural wall. This setting can not only achieve horizontal limitation of the air outlet panel 141 through insertion with the avoidance opening 610, but also strengthen the structure of the air supply opening 130 to inhibit deformation of the air outlet panel 141.

[0062] Please continue to refer to Figure 6 In this embodiment, the water receiving tray 600 is provided with a U-shaped water guiding area 620. Specifically, the U-shaped direction of the U-shaped water guiding area 620 is the same as that of the heat exchanger 200, and the U-shaped water guiding area 620 is gradually inclined downward from back to front; both ends of the water receiving tray 600 in the left-right direction are provided with drain ports 630 communicating with the U-shaped water guiding area 620, and the drain ports 630 are arranged close to the front wall 144 of the housing 100.

[0063] During the operation of the air conditioner indoor unit, after the condensed water generated by the operation of the heat exchanger 200 drops, it will be received by the U-shaped water guiding area 620; since the U-shaped water guiding area 620 is arranged in a form that is gradually inclined downward from back to front, the condensed water received by the U-shaped water guiding area 620 will flow forward under the action of its own gravity to be discharged from the drain ports 630 on both sides of the water receiving tray 600.

[0064] The above setting of the water receiving tray 600 realizes the gravity drainage process, eliminates the setting of drainage power components, and has low cost.

[0065] It should be noted that one of the drain ports 630 on both sides of the water receiving tray 600 can be selectively enabled according to the installation scenario, and the other drain port 630 is blocked by a plug.

[0066] Please continue to refer to Figure 3 and Figure 4 In this embodiment, the impeller assembly 300 may include a dual-axis motor 310, two impellers 320, and two volute casings 330. Specifically, the two output shafts of the dual-axis motor 310 are arranged in opposite directions along the left-right direction, the two impellers 320 are respectively fixedly sleeved on the two output shafts, the two volute casings 330 are both fixedly connected to the housing 100, and the two volute casings 330 respectively cover the two impellers 320. Among them, the outlet of the volute casing 330 forms the air outlet of the impeller assembly 300.

[0067] When the air conditioner indoor unit needs to operate, the dual-axis motor 310 is started to rotate its two output shafts, so as to realize the rotational drive of the two impellers 320, generate a negative pressure in the inner cavity 110, so that the external air flow can enter through the first air inlet 121 opened on the left wall 142 to exchange heat with the first side wall 210, enter through the second air inlet 122 opened on the rear wall 145 to exchange heat with the second side wall 220, and enter through the third air inlet 123 opened on the right wall 143 to exchange heat with the third side wall 230; then, the air flow that has completed the heat exchange enters through the inlet of the volute casing 330 and is further discharged from the outlet of the volute casing 330 to the air supply port 130 to realize air supply.

[0068] With this arrangement of the wind wheel assembly 300, during the operation of the air conditioner indoor unit, the flow path of the external air flow is to first pass through the heat exchanger 200, then through the wind wheel assembly 300, and further discharged through the air supply outlet 130, which is a suction air flow process. Compared with the blowing air flow process of a conventional duct machine, the heat exchange effect is improved.

[0069] It should be noted that in this embodiment, the space occupied by the wind wheel assembly 300 in the front-back direction and the up-down direction can be reduced by reducing the diameter of the wind wheel 320 and increasing the width of the wind wheel 320.

[0070] In this embodiment, the wind wheel 320 is preferably a centrifugal wind wheel because the centrifugal wind wheel has a greater static pressure and a better air supply effect. Additionally, other wind wheels, such as cross-flow wind wheels, can also be selected, and the air duct adapted to the cross-flow wind wheel is correspondingly designed to enable it to also achieve the effect of side air intake and bottom air outlet.

[0071] In addition, this embodiment also provides a kitchen air conditioner, including an outdoor unit and the above-mentioned air conditioner indoor unit. Among them, the size of the housing 100 in the left-right direction is less than 600 mm, the size of the housing 100 in the front-back direction is less than 300 mm, and the size of the housing 100 in the up-down direction is less than 260 mm; the air conditioner indoor unit is fixed between the ceiling and the suspended ceiling, and the lower surface of the air outlet panel 141 is basically parallel to the lower part of the suspended ceiling. To Figure 1 illustrate, that is, L < 600 mm, B < 300 mm, H < 260 mm.

[0072] By setting the housing 100 within the above-mentioned size range, after removing the aluminum gusset plate, the air conditioner indoor unit can be directly inserted into the internal space of the suspended ceiling from bottom to top, realizing the installation without damaging the suspended ceiling or cutting the keel on the basis of a decorated kitchen ceiling.

[0073] Although the present utility model is disclosed as above, the present utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the scope defined by the claims.

[0074] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0075] In the above embodiments, the descriptions of orientations such as "upper", "lower", "front", "rear", "left", "right", "side", etc. are all based on the figures shown.

[0076] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air conditioner indoor unit, characterized in that, It includes a housing (100), a heat exchanger (200) and a wind wheel assembly (300). Among them, the housing (100) has an inner cavity (110), an air inlet (120) and an air outlet (130); the heat exchanger (200) is arranged in the inner cavity (110), and the heat exchanger (200) includes a first side wall (210), a second side wall (220) and a third side wall (230) arranged in a U shape in sequence. The first side wall (210), the second side wall (220) and the third side wall (230) enclose an installation cavity, and the wind wheel assembly (300) is arranged in the installation cavity; the air inlet (120) includes a first air inlet (121) opposite to the first side wall (210), a second air inlet (122) opposite to the second side wall (220) and a third air inlet (123) opposite to the third side wall (230). An air outlet panel (141) is arranged at the lower part of the housing (100), and the air outlet (130) is opened on the air outlet panel (141). The air outlet of the wind wheel assembly (300) faces downward and is opposite to and communicated with the air outlet (130).

2. The air conditioner indoor unit according to claim 1, characterized in that, The housing (100) further includes a guide air door (147) rotatably installed on the air outlet panel (141). The guide air door (147) has a closed position for blocking the air outlet (130) and an open position for exposing the air outlet (130).

3. The indoor air conditioner according to claim 1, characterized in that, The indoor air conditioner further includes a filter screen (400). The filter screen (400) is fixedly arranged at the air outlet (130) and is used for filtering the air flow passing through the air outlet (130).

4. The air conditioner indoor unit according to claim 1, characterized in that, An installation position (1441) recessed towards the inner cavity (110) is arranged on the shell wall of the housing (100), and the electric control box (500) of the indoor air conditioner is arranged in the installation position (1441).

5. The air conditioner indoor unit according to claim 4, characterized in that, The housing (100) further includes a left wall (142) and a right wall (143) that are opposite and spaced apart in the left - right direction, a front wall (144) and a rear wall (145) that are opposite and spaced apart in the front - rear direction, and an upper wall (146) and a lower wall that are opposite and spaced apart in the up - down direction. The first air inlet (121) is opened on the left wall (142), the second air inlet (122) is opened on the rear wall (145), and the third air inlet (123) is opened on the right wall (143); the left wall (142), the rear wall (145) and the right wall (143) are of an integral structure, and the upper wall (146) and the front wall (144) are of an integral structure.

6. The air conditioner indoor unit according to claim 5, characterized in that, The installation position (1441) is arranged on the front wall (144). The height direction of the electric control box (500) is parallel to the up - down direction, and the thickness direction of the electric control box (500) is parallel to the front - rear direction.

7. The indoor air conditioner according to claim 1, characterized in that The indoor air conditioner further includes a water receiving tray (600). In the vertical direction, the water receiving tray (600) is located between the heat exchanger (200) and the air outlet panel (141); the heat exchanger (200) is installed on the water receiving tray (600), the air outlet panel (141) is fixedly connected to the water receiving tray (600), and the water receiving tray (600) is provided with an avoidance opening (610) opposite to the air supply opening (130).

8. The air conditioner indoor unit according to claim 7, characterized in that, The air outlet panel (141) is provided with a limiting wall (1411) surrounding the air supply opening (130), and the limiting wall (1411) is inserted into the avoidance opening (610); and / or, the water receiving tray (600) is provided with a U-shaped water guiding area (620), the U-shaped direction of the U-shaped water guiding area (620) is the same as the U-shaped direction of the heat exchanger (200), and the U-shaped water guiding area (620) is gradually inclined downward from back to front; both ends of the water receiving tray (600) in the left-right direction are provided with drain ports (630) communicated with the U-shaped water guiding area (620), and the drain ports (630) are arranged close to the front wall (144) of the housing (100).

9. The air conditioner indoor unit according to claim 1, wherein The impeller assembly (300) includes a double-shaft motor (310), two impellers (320) and two volute casings (330). The two output shafts of the double-shaft motor (310) are arranged in opposite directions in the left-right direction. The two impellers (320) are respectively fixedly sleeved on the two output shafts in a one-to-one correspondence. The two volute casings (330) are both fixedly connected to the housing (100), and the two volute casings (330) respectively cover the two impellers (320) in a one-to-one correspondence. Among them, the outlet of the volute casing (330) forms the air outlet of the impeller assembly (300).

10. A kitchen air conditioner, comprising an outdoor unit and the air conditioner indoor unit according to any one of claims 1-9, characterized in that, The size of the housing (100) in the left-right direction is less than 600 mm, the size of the housing (100) in the front-back direction is less than 300 mm, and the size of the housing (100) in the vertical direction is less than 260 mm; the indoor air conditioner is fixed between the ceiling and the suspended ceiling, and the lower surface of the air outlet panel (141) is basically flush with the lower part of the suspended ceiling.

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