Indoor unit of air conditioner

Abstract

The utility model provides an air conditioner indoor unit which comprises a heat exchanger and an on-off control device, and the heat exchanger comprises a refrigerant header pipe, a plurality of first heat exchange pipelines and at least one second heat exchange pipeline. Each first heat exchange pipeline is configured to receive a refrigerant from the refrigerant header pipe; each second heat exchange pipeline is communicated with the refrigerant header pipe so as to receive the refrigerant from the refrigerant header pipe; the on-off control device is arranged between the refrigerant header pipe and the multiple first heat exchange pipelines and is configured to control on-off between each first heat exchange pipeline and the refrigerant header pipe. According to the air conditioner indoor unit, the number of the first heat exchange pipelines communicated with the refrigerant header pipe can be adjusted through the on-off control device, so that the air outlet temperature of the air conditioner indoor unit is increased, blown cold air is more comfortable, and the use experience of a user is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of air conditioners, and in particular to an indoor air conditioner unit. Background Technology

[0002] As people's living standards continue to improve, air conditioners have become an indispensable electrical appliance in people's lives. However, in summer, the indoor unit of an air conditioner blows out relatively cold air, which can cause discomfort and a poor user experience. Utility Model Content

[0003] In view of the above problems, this utility model is proposed to provide an air conditioning indoor unit that overcomes or at least partially solves the above problems.

[0004] One objective of this invention is to solve the problem in related technologies where the air conditioner's outlet temperature is too low during cooling, causing cold air to blow directly onto customers and making them feel uncomfortable.

[0005] Specifically, this utility model proposes an indoor unit for an air conditioner.

[0006] The indoor unit of this utility model of an air conditioner includes: a heat exchanger, which includes a refrigerant main pipe, a plurality of first heat exchange pipes and at least one second heat exchange pipe; each first heat exchange pipe is configured to receive refrigerant from the refrigerant main pipe; each second heat exchange pipe is connected to the refrigerant main pipe to receive refrigerant from the refrigerant main pipe; and an on / off control device is disposed between the refrigerant main pipe and the plurality of first heat exchange pipes, configured to control the on / off connection between each first heat exchange pipe and the refrigerant main pipe.

[0007] In some embodiments, the on / off control device includes an inlet and a plurality of outlets, the plurality of outlets being connected to the inlet in a controlled manner via the control unit; one end of the refrigerant main pipe is connected to the inlet; the heat exchanger further includes a plurality of first branch pipes, one end of the plurality of first branch pipes being connected to the plurality of outlets in a corresponding manner, and the other end of the plurality of first branch pipes being connected to the plurality of first heat exchange pipes in a corresponding manner.

[0008] In some embodiments, the on / off control device further includes: a housing defining a liquid distribution chamber, the liquid distribution chamber having the inlet and a plurality of outlets disposed on its wall; and a control unit movably disposed in the liquid distribution chamber and configured to close at least one of the outlets or avoid all of the outlets.

[0009] In some embodiments, a plurality of outlets are spaced apart circumferentially in the dispensing chamber; the angle formed by the line connecting the axis of two adjacent outlets to the center of the dispensing chamber is an angle, thereby forming a plurality of angles; wherein at least one angle is the smallest angle, and angles greater than the smallest angle are integer multiples of the smallest angle; the control unit is rotatably disposed in the dispensing chamber about the axial direction of the dispensing chamber.

[0010] In some embodiments, the control unit includes a first sealing part and a second sealing part for closing the outlets, the first sealing part and the second sealing part being sequentially arranged circumferentially in the dispensing chamber and fixedly connected; the first sealing part and the second sealing part being rotatably arranged in the dispensing chamber about the axial direction of the dispensing chamber; a plurality of outlets forming a first outlet group and a second outlet group, each of the first outlet group and the second outlet group including at least one outlet; the first outlet group and the second outlet group being distributed on both sides of the center of the dispensing chamber; the first sealing part being configured to close the outlet in the first outlet group, and the second sealing part being configured to close the outlet in the second outlet group.

[0011] In some embodiments, the plurality of outlets are disposed on the bottom wall of the liquid distribution chamber; the surface of the first sealing portion near the bottom wall and the surface of the first sealing portion near the bottom wall are in contact with the bottom wall; the inlet is disposed on the peripheral wall of the liquid distribution chamber.

[0012] In some embodiments, a plurality of first heat exchange pipes are arranged sequentially in the vertical direction; there are a plurality of second heat exchange pipes, each of which is arranged between two adjacent first heat exchange pipes; and / or, one of the second heat exchange pipes is arranged above the uppermost first heat exchange pipe.

[0013] In some embodiments, the outlet includes a first outlet, a second outlet, a third outlet, and a fourth outlet; there are four first heat exchange pipes; the four first heat exchange pipes are arranged sequentially in the vertical direction and are respectively connected to the first outlet, the second outlet, the third outlet, and the fourth outlet; wherein the fourth outlet is connected to the lowest first heat exchange pipe; and / or, the control unit has a first station, a second station, and a third station; the first sealing part of the control unit at the first station closes the first outlet and the second outlet, and the second sealing part closes the fourth outlet; the first sealing part of the control unit at the second station closes the second outlet and the third outlet, and the second sealing part closes the fourth outlet; the first sealing part and the second sealing part of the control unit at the third station both avoid all the outlets.

[0014] In some embodiments, the indoor unit of the air conditioner further includes: a housing defining an air outlet; a heat exchanger disposed in the housing; a fan disposed in the housing and configured to cause the formation of an airflow passing through the heat exchanger and blowing out of the air outlet; and an air guide plate disposed at the air outlet and configured to adjust the airflow blowing out of the air outlet in the vertical direction.

[0015] In some embodiments, the ratio between the width of the air outlet in the vertical direction and the width of the heat exchanger in the vertical direction is 0.8 to 1.2.

[0016] The air conditioner indoor unit of this embodiment includes a heat exchanger comprising a refrigerant main pipe, a second heat exchange pipe connected to the refrigerant main pipe, and a first heat exchange pipe that is controllably connected to the refrigerant main pipe via an on / off control device. At least one second heat exchange pipe is directly connected to the refrigerant main pipe to ensure the cooling effect of the air conditioner indoor unit in this embodiment. Furthermore, when the cold air blown out by the air conditioner indoor unit makes the user uncomfortable, the on / off control device adjusts the number of first heat exchange pipes connected to the refrigerant main pipe, thereby increasing the outlet air temperature of the air conditioner indoor unit and making the blown cold air more comfortable, thus improving the user experience.

[0017] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0018] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0019] Figure 1 This is a schematic structural diagram of the indoor unit of an air conditioner according to an embodiment of this utility model;

[0020] Figure 2 This is a schematic structural diagram of the on / off control device according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic structural diagram of the on / off control device according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic structural diagram of the on / off control device according to an embodiment of the present utility model;

[0023] Figure 5 This is a schematic structural diagram of the on / off control device according to an embodiment of the present utility model;

[0024] Figure 6This is a schematic structural diagram of the on / off control device according to an embodiment of the present utility model;

[0025] Figure 7 This is a schematic structural diagram of the indoor unit of an air conditioner according to an embodiment of this utility model.

[0026] Figure label:

[0027] Air conditioner indoor unit 10;

[0028] Heat exchanger 100; First heat exchange pipe 110; Refrigerant main pipe 121; First branch pipe 122; Second branch pipe 123; Second heat exchange pipe 130;

[0029] On / off control device 200; inlet 201; first outlet 203; second outlet 204; third outlet 205; fourth outlet 206; housing 210; liquid distribution chamber 211; control unit 220; first sealing part 221; second sealing part 222; outer shell 300; fan 400; air guide plate 500. Detailed Implementation

[0030] The following reference Figures 1 to 7 This description pertains to an indoor air conditioning unit according to an embodiment of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0031] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The air conditioner indoor unit 10 of this utility model is described below with reference to the accompanying drawings.

[0035] like Figures 1-7 As shown, the indoor unit 10 of the air conditioner in this embodiment of the present invention includes a heat exchanger 100 and an on / off control device 200.

[0036] The heat exchanger 100 includes a refrigerant main 121, a plurality of first heat exchange lines 110, and at least one second heat exchange line 130. Each first heat exchange line 110 is configured to receive refrigerant from the refrigerant main 121, that is, each first heat exchange line 110 is indirectly connected to the refrigerant main 121, so that after the first heat exchange line 110 is connected to the refrigerant main 121, the refrigerant in the refrigerant main 121 can flow into the first heat exchange line 110, so that the refrigerant exchanges heat with the airflow flowing over the surface of the first heat exchange line 110.

[0037] Each second heat exchange pipe 130 is connected to the refrigerant main pipe 121 to receive refrigerant from the refrigerant main pipe 121. That is, the refrigerant in the refrigerant main pipe 121 can flow directly into each second heat exchange pipe 130 and exchange heat with the air flowing over the surface of each second heat exchange pipe 130.

[0038] An on / off control device 200 is disposed between the refrigerant main pipe 121 and a plurality of first heat exchange pipes 110. The on / off control device 200 is configured to control the on / off connection between each first heat exchange pipe 110 and the refrigerant main pipe 121. That is, the on / off control device 200 can control the number of first heat exchange pipes 110 flowing into the refrigerant, thereby controlling the temperature of the airflow after passing through the heat exchanger 100. For example, if there are five first heat exchange pipes 110, the on / off control device 200 can control one, two, three, four, or all of the five first heat exchange pipes 110 to be connected to the refrigerant main pipe 121, or it can control all five first heat exchange pipes 110 to be disconnected from the refrigerant main pipe 121.

[0039] Understandably, the fewer the number of first heat exchange pipes 110 connected to the refrigerant main pipe 121, the closer the airflow temperature after passing through the heat exchanger 100 will be to the temperature of the airflow before heat exchange. During summer cooling, users can adjust the on / off control device 200 to control the number of first heat exchange pipes 110 connected to the refrigerant main pipe 121 according to their needs. For example, during normal air conditioning cooling, all first heat exchange pipes 110 are connected to the refrigerant main pipe 121. When the air conditioner blows directly on the user, causing the user to feel the air temperature is too cold, the user can use the on / off control device 200 to disconnect some of the first heat exchange pipes 110 from the refrigerant main pipe 121, thereby increasing the airflow temperature and meeting the user's needs.

[0040] Compared with related technologies, the air conditioner indoor unit 10 of this embodiment includes a heat exchanger 100 comprising a refrigerant main pipe 121, a second heat exchange pipe 130 connected to the refrigerant main pipe 121, and the second heat exchange pipe 130, which is connected to the refrigerant main pipe 121 in a controlled manner via an on / off control device 200. At least one first heat exchange pipe 110 is directly connected to the refrigerant main pipe 121, ensuring the cooling effect of the air conditioner indoor unit 10 in this embodiment. Furthermore, when the cold air blown out by the air conditioner indoor unit 10 makes the user feel uncomfortable, the on / off control device 200 adjusts the number of first heat exchange pipes 110 connected to the refrigerant main pipe 121, thereby increasing the outlet air temperature of the air conditioner indoor unit 10 and making the blown cold air more comfortable, thus improving the user experience.

[0041] like Figure 7 As shown, the indoor unit 10 of the air conditioner in this embodiment of the present invention further includes: a housing 300, a fan 400, and an air guide plate 500. The housing 300 defines an air outlet, a heat exchanger 100 is disposed in the housing 300, and the fan 400 is disposed in the housing 300. The fan 400 is configured to cause airflow to pass through the heat exchanger 100 and be blown out of the air outlet. The air guide plate 500 is disposed at the air outlet and is configured to adjust the airflow blown out of the air outlet in the vertical direction.

[0042] In some embodiments, such as Figure 1and Figure 2 As shown, the on / off control device 200 includes an inlet 201 and multiple outlets. The multiple outlets are connected to the inlet 201 in a controlled manner via a control unit 220. That is, the inlet 201 can be selectively connected to at least one of the multiple outlets, or the inlet 201 can be disconnected from all the outlets. One end of the refrigerant main pipe 121 is connected to the inlet 201, and the refrigerant in the refrigerant main pipe 121 can enter the on / off control device 200 through the inlet 201.

[0043] The heat exchanger 100 also includes a plurality of first branch pipes 122, one end of which is connected to a plurality of outlets, and the other end of which is connected to a plurality of first heat exchange pipes 110. When the inlet 201 is connected to one or more outlets, the refrigerant can enter the corresponding first branch pipe 122 through the one or more outlets, and flow into the corresponding first heat exchange pipe 110 through the first branch pipe 122 for heat exchange, thereby achieving the purpose of controlling the number of first heat exchange pipes 110 through which the refrigerant can flow by the on / off control device 200.

[0044] like Figure 1 As shown, the heat exchanger 100 also includes a plurality of second branch pipes 123, one end of each of the plurality of second branch pipes 123 being connected to the refrigerant main pipe 121, and the other end of each of the plurality of second branch pipes 123 being connected to a plurality of second heat exchange pipes 130 in a corresponding manner.

[0045] In some embodiments, such as Figures 2-6 As shown, the on / off control device 200 also includes a housing 210 and a control unit 220. The housing 210 defines a liquid distribution chamber 211, and an inlet 201 and multiple outlets are provided on the wall of the liquid distribution chamber 211. The control unit 220 is movably disposed in the liquid distribution chamber 211. The control unit 220 is configured to close at least one outlet or avoid all outlets. That is, the control unit 220 can block one or more outlets in different positions by its own movement, thereby achieving the purpose of controlling the on / off state of each outlet and the inlet 201.

[0046] In some optional embodiments, multiple outlets are spaced apart circumferentially in the distribution chamber 211; the angle formed by the line connecting the axis of two adjacent outlets to the center of the distribution chamber 211 is called an angle, thus forming multiple angles. At least one angle is the minimum angle, and angles greater than the minimum angle are integer multiples of the minimum angle. The control unit 220 is rotatably disposed in the distribution chamber 211 about its axial direction. That is, by changing the position of the control unit 220 circumferentially in the distribution chamber 211, one or more outlets located at different positions circumferentially in the distribution chamber 211 can be blocked, resulting in a simple structure and ease of manufacturing. Furthermore, the angle between adjacent outlets is the same (i.e., the minimum angle) or the angle between adjacent outlets is an integer multiple of the minimum angle, so that the control unit 220 rotates at the minimum angle value or an integer multiple of the minimum angle value when blocking outlets at different positions. This reduces the control difficulty of the control unit 220 and saves manufacturing costs for the air conditioner of this embodiment.

[0047] Furthermore, the control unit 220 includes a baffle for blocking the outlet and a rotating shaft, one end of which is connected to the rotation center of the baffle. The other end of the rotating shaft extends out of the housing 210 and is connected to a driver (e.g., a drive motor) so that the driver drives the rotating shaft to rotate, thereby causing the baffle to rotate and thus blocking the outlet. The driver is electrically connected to the control board of the air conditioner indoor unit 10 in this embodiment, and the on / off control device 200 can operate according to commands issued by the control board to adjust the rotation position of the baffle.

[0048] In some embodiments, such as Figures 2-6 As shown, the control unit 220 includes a first sealing part 221 and a second sealing part 222 for closing the outlets. The first sealing part 221 and the second sealing part 222 are arranged sequentially in the circumferential direction of the dispensing chamber 211 and are fixedly connected. The first sealing part 221 and the second sealing part 222 are rotatably disposed in the dispensing chamber 211 about the axial direction of the dispensing chamber 211. Multiple outlets form a first outlet group 203 and a second outlet group 204, each of which includes at least one outlet. The first outlet group 203 and the second outlet group 204 are distributed on both sides of the center of the dispensing chamber 211. The first sealing part 221 is configured to close the outlet in the first outlet group 203, and the second sealing part 222 is configured to close the outlet in the second outlet group 204. The outlets of the first outlet group 203 and the second outlet group 204 are blocked by the first sealing part 221 and the second sealing part 222 respectively, thereby enabling multiple outlets to be alternately opened, allowing multiple first heat exchange pipes 110 to alternately flow with refrigerant, so that the ambient temperature airflow and the heat-exchanged cold airflow can be evenly mixed, which not only increases the temperature of the outlet air, but also improves the comfort of the outlet airflow.

[0049] Specifically, multiple outlets are located on the bottom wall of the liquid separation chamber 211. The surface of the first sealing part 221 near the bottom wall and the surface of the first sealing part 221 near the bottom wall are in contact with the bottom wall, and the inlet 201 is located on the peripheral wall of the liquid separation chamber 211.

[0050] In some alternative embodiments, multiple outlets may also be disposed on the peripheral wall of the dispensing chamber 211. The end face of the first sealing portion 221 away from the center of the dispensing chamber 211 contacts the peripheral wall of the dispensing chamber 211 to seal the multiple outlets of the first outlet group 203. The end face of the second sealing portion 222 away from the center of the dispensing chamber 211 contacts the peripheral wall of the dispensing chamber 211 to seal the multiple outlets of the second outlet group 204.

[0051] Furthermore, the first closed part 221 is fan-shaped, and the second closed part 222 is fan-shaped.

[0052] In some embodiments, a plurality of first heat exchange pipes 110 are arranged sequentially in the vertical direction, and a plurality of second heat exchange pipes 130 are arranged, each second heat exchange pipe 130 being disposed between two adjacent first heat exchange pipes 110. That is, the plurality of first heat exchange pipes 110 and the plurality of second heat exchange pipes 130 are arranged alternately in the vertical direction, so that when refrigerant is not flowing through a portion of the plurality of first heat exchange pipes 110, the airflow flowing through that portion of the first heat exchange pipes 110 is ambient temperature airflow (close to the indoor temperature). This portion of airflow can be uniformly mixed with the airflow passing through the second heat exchange pipes 130, which not only ensures the cooling effect of the indoor unit 10 of the air conditioner, but also makes the temperature of the outlet airflow uniform, improving temperature comfort.

[0053] Furthermore, a second heat exchange pipe 130 is positioned above the uppermost first heat exchange pipe 110, making the overall position of the first heat exchange pipe 110 higher than the first heat exchange pipe 110. This causes the lower-temperature portion of the air outlet of the indoor unit 10 to be positioned higher, thereby further improving the comfort of the air outlet.

[0054] In some embodiments, the outlets include a first outlet 203, a second outlet 204, a third outlet 205, and a fourth outlet 206. For example... Figures 2-6 As shown, the first outlet 203, the second outlet 204, and the third outlet 205 form the first outlet 203 group, and the second outlet 204 is located between the first outlet 203 and the third outlet 205. The fourth outlet 206 is part of the second outlet 204 group, and the fourth outlet 206 and the second outlet 204 are symmetrical about the center of the liquid distribution chamber 211.

[0055] There are four first heat exchange pipes 110; these four first heat exchange pipes 110 are arranged sequentially in the vertical direction and are connected to the first outlet 203, the second outlet 204, the third outlet 205, and the fourth outlet 206 respectively. The fourth outlet 206 is connected to the lowest first heat exchange pipe 110. In other words, the four first heat exchange pipes 110 are connected one-to-one with the first outlet 203, the second outlet 204, the third outlet 205, and the fourth outlet 206 from top to bottom.

[0056] There are two second heat exchange pipes 130. One of them is located above the uppermost first heat exchange pipe 110. The other heat exchange pipe is located between the uppermost first heat exchange pipe 110 and the adjacent first heat exchange pipe 110.

[0057] The control unit 220 has a first station, a second station and a third station.

[0058] The first sealing section 221 of the control unit 220 at the first workstation seals the first outlet 203 and the second outlet 204, and the second sealing section 222 seals the fourth outlet 206. For example... Figure 5 As shown, and refer to Figure 1 In other words, the two second heat exchange pipes 130 and the first heat exchange pipe 110 connected to the third outlet 205 carry refrigerant. The first heat exchange pipe 110 between the two second heat exchange pipes 130 does not carry refrigerant, and the first heat exchange pipe 110 between the lowest second heat exchange pipe 130 and the first heat exchange pipe 110 connected to the third outlet 205 does not carry refrigerant. This allows the ambient temperature airflow that has not exchanged heat with the first heat exchange pipe 110 to mix evenly with the airflow that has exchanged heat with the first heat exchange pipe 110 and the second heat exchange pipe 130. This not only raises the outlet air temperature, preventing it from becoming too cold and making the airflow more comfortable for the user, but also makes the outlet airflow temperature more uniform, further improving the comfort of the outlet airflow.

[0059] The first sealing section 221 of the control unit 220 at the second workstation seals both the first outlet 203 and the third outlet 205, and the second sealing section 222 seals the fourth outlet 206. For example... Figure 6 As shown, and refer to Figure 1In other words, the three lower first heat exchange pipes 110 do not circulate refrigerant, while the uppermost first heat exchange pipe 110 and the two second heat exchange pipes 130 circulate refrigerant. This places the uncooled ambient airflow below the cooled airflow, preventing the cold air from blowing directly onto the user and avoiding discomfort, while also ensuring the cooling effect of the indoor unit 10 in this embodiment. Especially when the air guide plate 500 guides the airflow upwards into the room, the upper cold airflow is even less likely to come into contact with the user.

[0060] like Figure 4 As shown, and with reference Figure 1 In the third station, the first sealing section 221 and the second sealing section 222 of the control unit 220 both avoid all outlets. That is to say, all the first heat exchange pipes 110 are normally circulated with refrigerant, and in this state, the indoor unit 10 of the air conditioner in this embodiment is in normal cooling state.

[0061] Optionally, the ratio between the width of the air outlet in the vertical direction and the width of the heat exchanger 100 in the vertical direction is 0.8 to 1.2. Optionally, the ratio between the width of the air outlet in the vertical direction and the width of the heat exchanger 100 in the vertical direction is, but is not limited to, 0.8, 0.9, 1, 1.1, or 1.2. That is, the width of the air outlet in the vertical direction is approximately the same as the width of the heat exchanger 100 in the vertical direction, so that the state of airflow from the heat exchanger 100 is approximately the same as the state of airflow from the air outlet, thereby ensuring the airflow comfort of the indoor unit 10 of the air conditioner in this embodiment.

[0062] Furthermore, in this embodiment of the present invention, the indoor unit 10 of the air conditioner is a cabinet air conditioner.

[0063] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: A heat exchanger includes a refrigerant main, a plurality of first heat exchange lines and at least one second heat exchange line; each of the first heat exchange lines is configured to receive refrigerant from the refrigerant main; each of the second heat exchange lines is in communication with the refrigerant main to receive refrigerant from the refrigerant main. An on / off control device is disposed between the refrigerant main pipe and the plurality of first heat exchange pipes, and is configured to control the on / off connection between each first heat exchange pipe and the refrigerant main pipe.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The on / off control device includes an inlet and multiple outlets, and the multiple outlets are connected to the inlet in a controlled on / off manner through the control unit; One end of the refrigerant main pipe is connected to the inlet; The heat exchanger also includes a plurality of first branch pipes, one end of which is connected to a plurality of outlets in a corresponding manner, and the other end of which is connected to a plurality of first heat exchange pipes in a corresponding manner.

3. The indoor unit of the air conditioner according to claim 2, characterized in that, The on / off control device further includes: A housing that defines a liquid distribution chamber, wherein the inlet and a plurality of outlets are provided on the wall surface of the liquid distribution chamber; A control unit is movably disposed in the liquid separation chamber and configured to close at least one of the outlets or avoid all of the outlets.

4. The indoor unit of the air conditioner according to claim 3, characterized in that, The multiple outlets are spaced apart in the circumferential direction of the liquid distribution chamber; the angle formed by the line connecting the axis of two adjacent outlets to the center of the liquid distribution chamber is an included angle, so as to form multiple included angles; wherein, at least one included angle is the smallest included angle, and the included angles greater than the smallest included angle are integer multiples of the smallest included angle. The control unit is rotatably disposed in the dispensing chamber about the axial direction of the dispensing chamber.

5. The indoor unit of the air conditioner according to claim 4, characterized in that, The control unit includes a first sealing part and a second sealing part for sealing the outlet. The first sealing part and the second sealing part are arranged sequentially in the circumferential direction of the liquid distribution chamber and are fixedly connected. The first sealing part and the second sealing part are rotatably arranged in the liquid distribution chamber about the axial direction of the liquid distribution chamber. The plurality of outlets form a first outlet group and a second outlet group, each of the first outlet group and the second outlet group including at least one outlet; the first outlet group and the second outlet group are distributed on both sides of the center of the dispensing chamber; the first sealing part is configured to seal the outlet in the first outlet group, and the second sealing part is configured to seal the outlet in the second outlet group.

6. The indoor unit of the air conditioner according to claim 5, characterized in that, All of the outlets are located on the bottom wall of the liquid separation chamber; The surface of the first closed portion near the bottom wall and the surface of the first closed portion near the bottom wall are in contact with the bottom wall; The inlet is located on the peripheral wall of the liquid separation chamber.

7. The indoor unit of the air conditioner according to claim 4, characterized in that, Multiple first heat exchange pipelines are arranged sequentially in the vertical direction; There are multiple second heat exchange pipelines, each of which is arranged between two adjacent first heat exchange pipelines; and / or, One of the second heat exchange pipes is located above the first heat exchange pipe at the top.

8. The indoor unit of the air conditioner according to claim 5, characterized in that, The exports include a first export, a second export, a third export, and a fourth export; There are four first heat exchange pipes; the four first heat exchange pipes are arranged sequentially in the vertical direction and are respectively connected to the first outlet, the second outlet, the third outlet, and the fourth outlet; wherein, the fourth outlet is connected to the first heat exchange pipe located at the bottom; and / or, The control unit has a first workstation, a second workstation, and a third workstation; The first sealing part of the control unit located at the first work station seals the first outlet and the second outlet, and the second sealing part seals the fourth outlet; The first sealing part of the control unit located at the second work station seals the second outlet and the third outlet, and the second sealing part seals the fourth outlet; The first and second enclosures of the control unit located at the third work station both avoid all the outlets.

9. The indoor unit of the air conditioner according to claim 1, characterized in that, Also includes: The outer casing defines the air outlet; the heat exchanger is disposed within the outer casing. A fan, disposed within the housing, is configured to induce the formation of an airflow that passes through the heat exchanger and exits from the outlet. An air guide plate is disposed at the air outlet and configured to adjust the airflow blown out of the air outlet in the vertical direction.

10. The indoor unit of the air conditioner according to claim 9, characterized in that, The ratio between the width of the air outlet in the vertical direction and the width of the heat exchanger in the vertical direction is 0.8 to 1.2.

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