Air pipe type air conditioner and indoor unit thereof

Abstract

The utility model provides an air pipe type air conditioner and an indoor unit of the air pipe type air conditioner, the indoor unit of the air pipe type air conditioner comprises a shell, a heat exchanger, a shunting assembly and a temperature sensor, and the shell is provided with an inner cavity; the shunting assembly is arranged in the inner cavity; the flow dividing assembly comprises a sleeve, a main pipe body and a liquid dividing branch pipe body, the throttling section of the main pipe body is sleeved with the sleeve, and a flow dividing cavity is formed between the throttling section and the sleeve; the throttling section is provided with at least one throttling hole, and the throttling hole is communicated between an inner cavity of the throttling section and the flow dividing cavity. The liquid distribution branch pipe body is connected with the sleeve, and a pipe cavity of the liquid distribution branch pipe body is communicated with the flow distribution cavity; the liquid separation branch pipe body is connected with the heat exchanger, and the sleeve and the throttling section are located above the bottom of the heat exchanger; and the temperature sensor is arranged on the sleeve. The temperature, detected by the indoor unit of the air pipe type air conditioner, of the refrigerant inlet of the heat exchanger is accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of indoor unit of ducted air conditioner, in particular to a ducted air conditioner and indoor unit thereof. BACKGROUND

[0002] The indoor unit of the ducted air conditioner in the related art utilizes a distribution head, such as a Venturi distribution head, to distribute refrigerant through a plurality of capillary tubes to each refrigerant inlet of an evaporator. When it is necessary to detect the temperature at the refrigerant inlet of the heat exchanger, the refrigerant in the current distribution head cannot accurately reflect the temperature at the refrigerant inlet of the heat exchanger because the refrigerant has not been depressurized and cooled by the capillary tubes. Moreover, the middle and upper portions of the heat exchanger correspond to the air inlet, so the refrigerant in the middle and upper portions of the heat exchanger has a good evaporation effect, resulting in a high temperature of the refrigerant in the capillary tubes connected to the middle and upper portions of the heat exchanger. Therefore, the indoor unit of the ducted air conditioner in the related art detects the temperature at the refrigerant inlet of the heat exchanger by arranging a temperature sensor on the capillary tube connected to the refrigerant inlet at the bottom of the heat exchanger. However, condensate water may accumulate at the bottom of the heat exchanger, for example, when the drain hole of the water collecting tray is blocked, a portion of the capillary tube connected to the bottom of the heat exchanger may be immersed in the condensate water, causing the temperature of the capillary tube to decrease, and resulting in a low temperature detected by the temperature sensor, which causes the temperature at the refrigerant inlet of the heat exchanger to be inaccurate. SUMMARY

[0003] In view of the above problems, the utility model is proposed to provide a ducted air conditioner and indoor unit thereof that overcome the above problems or at least partially solve the above problems, and the indoor unit of the ducted air conditioner aims to solve the problem of inaccurate detection of the temperature at the refrigerant inlet of the heat exchanger.

[0004] Specifically, the utility model provides an indoor unit of a ducted air conditioner.

[0005] The indoor unit of the ducted air conditioner of the utility model, which comprises a shell and a heat exchanger, the shell has an inner cavity, and the indoor unit further comprises a flow distribution assembly arranged in the inner cavity, the flow distribution assembly comprises a sleeve, a main pipe body and a distribution branch pipe body, the sleeve is sleeved on a throttling section of the main pipe body to form a flow distribution cavity between the throttling section and the sleeve, at least one throttling hole is arranged on the throttling section and communicates between the inner cavity of the throttling section and the flow distribution cavity, the distribution branch pipe body is connected to the sleeve, and a pipe cavity of the distribution branch pipe body communicates with the flow distribution cavity, the distribution branch pipe body is connected to the heat exchanger, and the sleeve and the throttling section are located above the bottom of the heat exchanger, and a temperature sensor is mounted on the sleeve and used to detect the temperature of the refrigerant in the flow distribution cavity.

[0006] In some embodiments, the throttle holes are multiple, and the multiple throttle holes are arranged in the up-down direction; the temperature sensor corresponds to the lowermost one of the multiple throttle holes in the up-down direction.

[0007] In some embodiments, the indoor unit of the ducted air conditioner further comprises a bracket fixedly arranged on the sleeve; the bracket has a mounting groove, and the temperature sensor is arranged in the mounting groove.

[0008] In some embodiments, the bracket is a cylinder, and an inner wall surface of the cylinder forms the mounting groove; the cylinder comprises an open end, so that the temperature sensor is mounted in the mounting groove through the open end; the inner wall surface of the mounting groove is provided with a protruding portion, and the protruding portion abuts against the temperature sensor.

[0009] In some embodiments, the inner wall surface of the mounting groove is provided with a crimping piece, the crimping piece comprises an elastic connecting portion and a crimping portion, one end of the elastic connecting portion is connected with the inner wall surface of the mounting groove, and the other end of the elastic connecting portion extends to the inner side of the mounting groove; the crimping portion is connected with the other end of the elastic connecting portion, and the crimping portion abuts against the temperature sensor.

[0010] In some embodiments, the crimping piece is located on the side of the temperature sensor away from the sleeve.

[0011] In some embodiments, the distance between the bottom end of the sleeve and the bottom wall surface of the inner cavity is 15-30 mm.

[0012] In some embodiments, the sleeve comprises a first pipe segment, a second pipe segment and a third pipe segment connected in sequence in the axial direction, the inner wall surface of the first pipe segment is connected with the outer peripheral surface of the throttle segment; the inner wall surface of the second pipe segment is arranged in the inner-outer direction away from the outer peripheral surface of the throttle segment to form the shunt cavity; the inner wall surface of the third pipe segment is connected with the outer peripheral surface of the throttle segment; wherein, the second pipe segment forms the throttle segment.

[0013] In some embodiments, the heat exchanger comprises a first refrigerant inlet, a second refrigerant inlet and a third refrigerant inlet arranged in sequence in the up-down direction, and the first refrigerant inlet, the second refrigerant inlet and the third refrigerant inlet are arranged at intervals;

[0014] The sleeve is provided with a first refrigerant outlet, a second refrigerant outlet and a third refrigerant outlet, and the first refrigerant outlet, the second refrigerant outlet and the third refrigerant outlet are in communication with the shunt cavity;

[0015] The distribution branch pipe body includes a first distribution branch pipe body, a second distribution branch pipe body, and a third distribution branch pipe body; the first distribution branch pipe body is connected between the first refrigerant inlet and the first refrigerant outlet; the second distribution branch pipe body is connected between the second refrigerant inlet and the second refrigerant outlet; and the third distribution branch pipe body is connected between the third refrigerant inlet and the third refrigerant outlet.

[0016] The ducted air conditioner comprises the indoor unit of any one of the above.

[0017] The indoor unit of the ducted air conditioner has a distribution assembly which utilizes the throttling holes on the throttling section of the main pipe body to achieve throttling effect of reducing pressure and temperature on the refrigerant, so that the refrigerant after temperature reduction enters the heat exchanger in turn through the distribution cavity and the pipe cavity of the distribution branch pipe body, thereby replacing the throttling mode of the refrigerant by the capillary tube in the related art. Since the distribution cavity is the refrigerant after throttling and temperature reduction, and the distribution branch pipe body only provides a channel for the refrigerant to flow into the heat exchanger, the temperature of the refrigerant in the distribution cavity is the temperature of the refrigerant inlet of the heat exchanger to be detected in the related art. In the case that condensate water is accumulated at the bottom of the heat exchanger, the sleeve and the throttling section do not directly contact the condensate water, so that the refrigerant in the distribution cavity is not affected by the condensate water, thereby the temperature sensor installed on the sleeve can more accurately detect the temperature of the refrigerant inlet of the heat exchanger.

[0018] The above and other objects, advantages and features of the present application will become more apparent from the following detailed description of the specific embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] Some specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, which are exemplary and not limiting. The same reference signs in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0020] Figure 1 is a schematic structural view of the distribution assembly of the embodiment of the present application;

[0021] Figure 2 is a schematic structural view of the distribution assembly of the embodiment of the present application;

[0022] Figure 3 is Figure 2 is a partial enlarged schematic structural view of position A in FIG. 4;

[0023] Figure 4 is a schematic structural view of the installation of the bracket and the temperature sensor of the embodiment of the present application;

[0024] Figure 5 This is a schematic structural diagram of the bracket according to an embodiment of the present utility model;

[0025] Figure 6 for Figure 5 A magnified schematic diagram of the structure at point B in the middle;

[0026] Figure 7 This is a schematic structural diagram of the indoor unit of a duct-type air conditioner according to an embodiment of the present utility model.

[0027] Figure label:

[0028] Shell 100; Inner cavity 110; Heat exchanger 200; Bottom 210; First refrigerant inlet 220; Second refrigerant inlet 230; Third refrigerant inlet 240; Diverter assembly 300; Sleeve 310; First pipe section 311; Second pipe section 312; Third pipe section 313; First refrigerant outlet 314; Second refrigerant outlet 315; Third refrigerant outlet 316; Main pipe 320; Throttling section 330; Throttling orifice 331; Liquid distribution branch pipe 340; First liquid distribution branch pipe 341; Second liquid distribution branch pipe 342; Third liquid distribution branch pipe 343; Diverter cavity 350; Temperature sensor 400; Bracket 500; Mounting groove 510; Press fitting 520; Flexible connection part 521; Press fitting part 522. Detailed Implementation

[0029] The following reference Figures 1 to 7 This invention describes a ducted air conditioner and its indoor unit according to embodiments 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.

[0030] 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.

[0031] Further, in the description of the embodiments, the first feature being "on" or "under" the second feature can include the first and second features being in direct contact, or can include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of the embodiments, the first feature being "on", "above", and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is higher in horizontal height than the second feature. The first feature being "under", "below", or "underneath" the second feature can be the first feature being directly below or obliquely below the second feature, or merely means that the first feature is lower in horizontal height than the second feature.

[0032] In the description of the embodiments, the description with reference to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The indoor unit of the ducted air conditioner according to the embodiments of the present application will be described below with reference to the accompanying drawings.

[0034] As shown in Figures 1 to 7 The indoor unit of the ducted air conditioner according to the embodiments of the present application includes a housing 100, a heat exchanger 200, a flow splitting assembly 300, and a temperature sensor 400.

[0035] The housing 100 has an inner cavity 110, and the heat exchanger 200 is arranged in the inner cavity 110 to exchange heat with the air entering the inner cavity 110. The bottom 210 of the heat exchanger 200 is in contact with the bottom wall surface of the inner cavity 110.

[0036] The flow splitting assembly 300 is arranged in the inner cavity 110, and the flow splitting assembly 300 includes a sleeve 310, a main pipe body 320, and a branch pipe body 340. The main pipe body 320 has a throttling section 330, and the sleeve 310 is sleeved on the throttling section 330 of the main pipe body 320 to form a flow splitting cavity 350 between the throttling section 330 and the sleeve 310. At least one throttling hole 331 is arranged on the throttling section 330, and the throttling hole 331 is in communication between the inner cavity 110 and the flow splitting cavity 350 of the throttling section 330. That is, the refrigerant in the main pipe body 320 can flow into the flow splitting cavity 350 through the throttling hole 331 on the throttling section 330, and the throttling hole 331 has a throttling effect on the refrigerant when the refrigerant flows through the throttling hole 331, so that the refrigerant is depressurized and cooled before entering the flow splitting cavity 350.

[0037] The distribution branch pipe body 340 is connected with the sleeve pipe 310, the lumen of the distribution branch pipe body 340 is communicated with the distribution cavity 350, and the distribution branch pipe body 340 is connected with the heat exchanger 200. The refrigerant which is subjected to the cooling and pressure reduction treatment through the throttling hole 331 is transported to the refrigerant inlet of the heat exchanger 200 connected with the distribution branch pipe body 340 through the lumen of the distribution branch pipe body 340.

[0038] The sleeve pipe 310 and the throttling section 330 are located above the bottom 210 of the heat exchanger 200. After heat exchange with air, the heat exchanger 200 will condense condensate water, and the condensate water can be accumulated on the bottom wall surface of the inner cavity 110 and flood the bottom 210 of the heat exchanger 200. The sleeve pipe 310 and the throttling section 330 located above the bottom 210 of the heat exchanger 200 can avoid contact of the sleeve pipe 310 and the throttling section 330.

[0039] The temperature sensor 400 is installed on the sleeve pipe 310, and the temperature sensor 400 is used for detecting the temperature of the refrigerant in the distribution cavity. That is, the temperature of the refrigerant in the distribution cavity can be transmitted to the sleeve pipe 310, and the temperature sensor 400 detects the temperature of the refrigerant in the distribution cavity by detecting the temperature of the surface of the sleeve pipe 310.

[0040] Compared with the related art, the indoor unit of the air pipe type air conditioner has the distribution assembly 300 which utilizes the throttling hole 331 on the throttling section 330 of the main pipe body 320 to achieve the throttling effect of reducing the pressure and temperature of the refrigerant, so that the refrigerant after temperature reduction enters the heat exchanger 200 in turn through the distribution cavity and the lumen of the distribution branch pipe body 340, thereby replacing the throttling mode of the refrigerant in the related art by using the capillary tube. Since the distribution cavity is the refrigerant after throttling and temperature reduction, and the distribution branch pipe body 340 only provides a channel for the refrigerant to flow into the heat exchanger 200, the temperature of the refrigerant in the distribution cavity is the temperature of the refrigerant inlet of the heat exchanger 200 to be detected in the related art. In the case that the condensate water is accumulated at the bottom 210 of the heat exchanger 200, the sleeve pipe 310 and the throttling section 330 will not be directly contacted with the condensate water, so that the refrigerant in the distribution cavity is not affected by the condensate water or is even not affected by the condensate water, and thus the temperature sensor 400 installed on the sleeve pipe 310 can more accurately detect the temperature of the refrigerant inlet of the heat exchanger 200.

[0041] In addition, since the distribution cavity is located upstream of the distribution branch pipe body 340, the refrigerant in the distribution cavity is less affected by the temperature of the refrigerant in the distribution branch pipe body 340, thereby further improving the accuracy of the detected temperature of the refrigerant inlet of the heat exchanger 200.

[0042] In some embodiments, as Figure 7As shown, the heat exchanger 200 includes a first refrigerant inlet 220, a second refrigerant inlet 230 and a third refrigerant inlet 240 arranged in sequence in the up-down direction, and the first refrigerant inlet 220, the second refrigerant inlet 230 and the third refrigerant inlet 240 are arranged in intervals.

[0043] The sleeve 310 is provided with a first refrigerant outlet 314, a second refrigerant outlet 315 and a third refrigerant outlet 316, which are all in communication with the distribution cavity 350. The distribution branch pipe body 340 includes a first distribution branch pipe body 341, a second distribution branch pipe body 342 and a third distribution branch pipe body 343; the first distribution branch pipe body 341 is connected between the first refrigerant inlet 220 and the first refrigerant outlet 314. The second distribution branch pipe body 342 is connected between the second refrigerant inlet 230 and the second refrigerant outlet 315. The second distribution branch pipe body 342 is connected between the second refrigerant inlet 230 and the second refrigerant outlet 315.

[0044] That is, the refrigerant in the distribution cavity is distributed to the first distribution branch pipe body 341, the second distribution branch pipe body 342 and the third distribution branch pipe body 343 through the first refrigerant outlet 314, the second refrigerant outlet 315 and the third refrigerant outlet 316 respectively, and then is transported to the first refrigerant inlet 220, the second refrigerant inlet 230 and the third refrigerant inlet 240 by the first distribution branch pipe body 341, the second distribution branch pipe body 342 and the third distribution branch pipe body 343 respectively, so as to realize uniform transportation of the refrigerant in the distribution cavity to the first refrigerant inlet 220, the second refrigerant inlet 230 and the third refrigerant inlet 240 of the heat exchanger 200.

[0045] In some embodiments, as shown in the drawings, Figures 1 to 2 The sleeve 310 includes a first pipe segment 311, a second pipe segment 312 and a third pipe segment 313 connected in sequence in the axial direction thereof, the inner wall surface of the first pipe segment 311 is connected with the outer peripheral surface of the throttling segment 330. The inner wall surface of the second pipe segment 312 is arranged in intervals with the outer peripheral surface of the throttling segment 330 in the inner-outer direction to form the distribution cavity 350; the inner wall surface of the third pipe segment 313 is connected with the outer peripheral surface of the throttling segment 330. Among them, the second pipe segment 312 forms the throttling segment 330.

[0046] The first pipe segment 311, the second pipe segment 312 and the third pipe segment 313 and the throttling segment 330 form a distribution cavity for accommodating the refrigerant after cooling, and after the refrigerant enters the distribution cavity through the throttling hole 331, the liquid-phase refrigerant and the gas-phase refrigerant in the refrigerant are mixed with each other and tend to be uniform, which is conducive to making the refrigerant more evenly distributed when flowing into the distribution branch pipe body 340.

[0047] In some embodiments, the throttle hole 331 is a plurality of throttle holes 331 arranged in the up-down direction; the temperature sensor 400 corresponds to the lowermost one of the plurality of throttle holes 331 in the up-down direction. By arranging a plurality of throttle holes 331 on the throttle section 330, the refrigerant can be sprayed into the distribution cavity after being throttled by the plurality of throttle holes 331, so that the plurality of refrigerant streams are mixed and tend to be uniform, thereby facilitating more uniform distribution of the refrigerant when flowing into the distribution branch pipe body 340.

[0048] In addition, the lowermost one of the throttle holes 331 corresponds to the lowermost distribution branch pipe body 340, that is, the throttle hole 331 corresponds to the refrigerant inlet of the bottom 210 of the heat exchanger 200. The temperature sensor 400 corresponds to the lowermost one of the plurality of throttle holes 331, so that the temperature detected by the temperature sensor 400 at the refrigerant inlet of the heat exchanger 200 is more accurate.

[0049] In some embodiments, as shown in Figures 4 to 6 The indoor unit of the air duct type air conditioner further includes a bracket 500 fixedly arranged on the sleeve 310, and the bracket 500 has a mounting groove 510, and the temperature sensor 400 is arranged in the mounting groove 510. That is, when the temperature sensor 400 is installed, the temperature sensor 400 is directly inserted into the mounting groove 510 of the bracket 500, so that the installation of the temperature sensor 400 is realized. The installation of the temperature sensor 400 is facilitated, and the structure is simple and the manufacturing cost is low.

[0050] Further, as shown in Figures 4 to 6 The bracket 500 is a cylinder, and an inner wall surface of the cylinder forms the mounting groove 510; the cylinder includes an open end, so that the temperature sensor 400 is installed in the mounting groove 510 through the open end. The inner wall surface of the mounting groove 510 is provided with a protruding portion, and the protruding portion abuts against the temperature sensor 400. That is, when the temperature sensor 400 is installed in the mounting groove 510, the protruding portion abuts against the temperature sensor 400, and the temperature sensor 400 is fixed in the mounting groove 510 through the friction force between the protruding portion and the temperature sensor 400, so that the installation of the temperature sensor 400 is further facilitated, and the installation stability of the temperature sensor 400 is ensured.

[0051] Optionally, the bracket 500 is connected to the sleeve 310 by welding.

[0052] Specifically, the inner wall surface of the mounting groove 510 is provided with a crimping piece 520, the crimping piece 520 includes an elastic connecting part 521 and a crimping part 522, one end of the elastic connecting part 521 is connected with the inner wall surface of the mounting groove 510, and the other end of the elastic connecting part 521 extends to the inner side of the mounting groove 510; the crimping part 522 is connected with the other end of the elastic connecting part 521, and the crimping part 522 abuts on the temperature sensor 400.

[0053] That is, when the temperature sensor 400 is installed or disassembled, the elastic connecting part 521 will be elastically deformed, so that the crimping part 522 avoids the temperature sensor 400, so as to insert the temperature sensor 400 into the mounting groove 510 or take the temperature sensor 400 out of the mounting groove 510. And when the temperature sensor 400 is normally installed in the mounting groove 510, the elastic connecting part 521 can provide sufficient support for the crimping part 522, so that the crimping part 522 presses the temperature sensor 400 on the wall surface of the mounting groove 510.

[0054] In some embodiments, the crimping piece 520 is located on the side of the temperature sensor 400 away from the sleeve 310. That is, the crimping piece 520 presses the temperature sensor 400 on the wall surface of the mounting groove 510 close to the sleeve 310, so that the temperature parameter detected by the temperature sensor 400 is more accurate.

[0055] Optionally, the distance between the bottom end of the sleeve 310 and the bottom wall surface of the inner cavity 110 is 15-30 mm. Optionally, the distance between the bottom end of the sleeve 310 and the bottom wall surface of the inner cavity 110 is 17-28 mm. Optionally, the distance between the bottom end of the sleeve 310 and the bottom wall surface of the inner cavity 110 is 20-25 mm. Thus, without affecting the normal operation of the shunt assembly 300, the bottom end of the sleeve 310 is spaced apart from the bottom wall surface of the inner cavity 110 by a sufficient distance, so as to avoid the contact between the sleeve 310 and the condensed water in the case that there is condensed water on the bottom wall surface of the inner cavity 110.

[0056] The distance between the bottom end of the sleeve 310 and the bottom wall surface of the inner cavity 110 includes but is not limited to 15 mm, 17 mm, 21 mm, 24 mm, 25 mm, 27 mm, 28 mm or 30 mm.

[0057] The air pipe type air conditioner of the embodiment of the utility model comprises the indoor unit of any one of the above embodiments. The indoor unit of the air pipe type air conditioner of the embodiment of the utility model has the shunt assembly 300 which utilizes the throttling hole 331 on the throttling section 330 of the main pipe body 320 to achieve the throttling effect of reducing the pressure and temperature of the refrigerant, so that the refrigerant after temperature reduction enters the heat exchanger 200 in turn through the liquid separation cavity and the pipe cavity of the liquid separation branch pipe body 340, thereby replacing the mode of throttling the refrigerant by using the capillary tube in the related art. Among them, since the liquid separation cavity is the refrigerant after throttling and temperature reduction, and the liquid separation branch pipe body 340 only provides a channel for the refrigerant to flow into the heat exchanger 200, the temperature of the refrigerant in the liquid separation cavity is the temperature of the refrigerant at the inlet of the heat exchanger 200 to be detected in the related art. And in the case that the condensate water is accumulated at the bottom 210 of the heat exchanger 200, the sleeve pipe 310 and the throttling section 330 will not be in direct contact with the condensate water, so that the refrigerant in the liquid separation cavity is not affected by the condensate water, and the temperature sensor 400 installed on the sleeve pipe 310 can more accurately detect the temperature of the refrigerant at the inlet of the heat exchanger 200.

[0058] At this point, those skilled in the art should recognize that, although the plurality of exemplary embodiments of the utility model have been shown and described in detail herein, many other variants or modifications conforming to the principles of the utility model can be directly determined or deduced according to the content disclosed by the utility model without departing from the spirit and scope of the utility model. Therefore, the scope of the utility model should be understood and recognized as covering all these other variants or modifications.

Claims

1. An indoor unit of a duct type air conditioner, comprising a casing having an internal cavity and a heat exchanger, characterized in that, The indoor unit further comprises: A flow splitting component is arranged in the inner cavity; the flow splitting component comprises a sleeve, a main pipe body and a branch pipe body, the sleeve is sleeved on the throttling section of the main pipe body to form a flow splitting cavity between the throttling section and the sleeve; at least one throttling hole is arranged on the throttling section, the throttling hole is communicated between the inner cavity of the throttling section and the flow splitting cavity; the branch pipe body is connected with the sleeve, the lumen of the branch pipe body is communicated with the flow splitting cavity; the branch pipe body is connected with the heat exchanger, and the sleeve and the throttling section are located above the bottom of the heat exchanger; A temperature sensor is mounted on the sleeve, and the temperature sensor is used to detect the temperature of the refrigerant in the flow splitting cavity.

2. The indoor unit of the ducted air conditioner according to claim 1, wherein The throttling holes are multiple, and the multiple throttling holes are arranged in the up-down direction; the temperature sensor corresponds to the lowermost one of the multiple throttling holes in the up-down direction.

3. The indoor unit of the duct type air conditioner according to claim 1, characterized by Further comprising: A bracket is fixedly arranged on the sleeve; the bracket has a mounting groove, and the temperature sensor is arranged in the mounting groove.

4. The indoor unit of the ducted air conditioner according to claim 3, wherein The bracket is a cylinder, and an inner wall surface of the cylinder forms the mounting groove; the cylinder comprises an open end, so that the temperature sensor is mounted in the mounting groove through the open end; An inner wall surface of the mounting groove is provided with a protruding part, and the protruding part abuts against the temperature sensor.

5. The indoor unit of the ducted air conditioner according to claim 4, wherein An inner wall surface of the mounting groove is provided with a crimping piece; the crimping piece comprises an elastic connecting part and a crimping part, one end of the elastic connecting part is connected with the inner wall surface of the mounting groove, and the other end of the elastic connecting part extends to the inner side of the mounting groove; the crimping part is connected with the other end of the elastic connecting part, and the crimping part abuts against the temperature sensor; the crimping piece forms the protruding part.

6. The indoor unit of the duct type air conditioner according to claim 5, wherein The crimping piece is located on the side of the temperature sensor away from the sleeve.

7. The ducted air conditioner indoor unit according to claim 5, wherein The distance between the bottom end of the sleeve and the bottom wall surface of the inner cavity is 15-30 mm.

8. The indoor unit of the ducted air conditioner according to claim 1, wherein The sleeve comprises a first pipe section, a second pipe section and a third pipe section connected in sequence in the axial direction, an inner wall surface of the first pipe section is connected with the outer peripheral surface of the throttling section; an inner wall surface of the second pipe section is arranged in the inner-outer direction away from the outer peripheral surface of the throttling section to form the flow splitting cavity; an inner wall surface of the third pipe section is connected with the outer peripheral surface of the throttling section; wherein the second pipe section forms the throttling section.

9. The indoor unit of the ducted air conditioner according to claim 1, wherein The heat exchanger comprises a first refrigerant inlet, a second refrigerant inlet and a third refrigerant inlet arranged in sequence in the up-down direction, and the first refrigerant inlet, the second refrigerant inlet and the third refrigerant inlet are arranged at intervals. The sleeve is provided with a first refrigerant outlet, a second refrigerant outlet and a third refrigerant outlet, which are all communicated with the distribution cavity; The liquid distribution branch pipe body comprises a first liquid distribution branch pipe body, a second liquid distribution branch pipe body and a third liquid distribution branch pipe body; the first liquid distribution branch pipe body is connected between the first refrigerant inlet and the first refrigerant outlet; the second liquid distribution branch pipe body is connected between the second refrigerant inlet and the second refrigerant outlet.

10. A ducted air conditioner characterized by comprising: The indoor unit comprises the indoor unit according to any one of claims 1-9.

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