Water pan assembly, air duct type indoor unit and air duct type air conditioner

Abstract

The invention provides a water pan assembly, an air duct type indoor unit and an air duct machine, the water pan assembly at least comprises a first water pan and a second water pan, a supporting protrusion used for placing an evaporator is arranged in the first water pan, the supporting protrusion is in a shape with the middle higher than the two sides gradually lowered, and at least the supporting protrusion is provided with a drainage seam; the second water pan is used for supporting the first water pan and collecting condensate water dripping from the drainage seam; the evaporator can be placed at a high position, and meanwhile the problem that the evaporator is corroded due to being soaked by accumulated water is effectively solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioners, and more specifically, relates to a water receiving tray assembly, a duct type indoor unit and a duct machine. Background Art

[0002] The water tray is a major component of the duct indoor unit (also known as the duct indoor unit). Its main function is to collect condensed water generated on the surface of the evaporator during the operation of the duct unit. It is also called a condensation tray. When the duct unit is dehumidifying or cooling, the water vapor in the air will condense into water droplets when it encounters the lower temperature surface of the evaporator. These water droplets gather and flow into the water tray, and are eventually discharged to the outside of the air conditioner through the pipe, keeping the indoor air dry and preventing water droplets from falling on the ground, causing safety problems and discomfort. However, looking at the common water trays on the market, they will produce a lot of accumulated water after the duct unit is used for a long time, causing corrosion to the evaporator. Summary of the invention

[0003] The object of the present invention is to provide a water receiving tray assembly, a duct type indoor unit and a duct machine, so as to solve the problem of evaporator corrosion caused by water soaking in the prior art.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] The present invention first provides a water receiving tray assembly, comprising:

[0006] A first water receiving tray, wherein a supporting protrusion for placing the evaporator is provided in the first water receiving tray, the supporting protrusion is high in the middle and gradually lowers on both sides, and at least the supporting protrusion is provided with a drainage slit;

[0007] The second water receiving tray supports the first water receiving tray and collects condensed water dripping through the drainage slit.

[0008] Furthermore, a water storage tank is formed inside the second water receiving tray, and the bottom wall of the water storage tank includes a drainage portion and a diversion inclined portion surrounding the drainage portion; a notch is opened at the position of the first water receiving tray corresponding to the drainage portion, and the notch is used for the pumping end of the water supply pump to pass through so that the condensed water in the water storage tank can be pumped into the drain pipe through the water pump.

[0009] Furthermore, the water receiving tray assembly also includes a pull-out cover plate, supporting the first water receiving tray and the second water receiving tray, and two guide rail assemblies for pulling out are provided on both sides of the pull-out cover plate.

[0010] Furthermore, the guide rail assembly includes a first guide rail and a second guide rail, and the first guide rail is slidably disposed on the second guide rail and fixedly connected to the drawer cover.

[0011] Furthermore, a first roller is disposed at one end of the first guide rail, and a second roller is disposed at one end of the second guide rail away from the first roller.

[0012] Furthermore, the first guide rail adopts a U-shaped folded edge structure opening downward, and the second guide rail adopts a U-shaped folded edge structure opening upward.

[0013] Furthermore, the pull-out cover includes an integrally arranged supporting bottom and a pull-out side portion, a receiving groove is formed inside the supporting bottom, and the top edge of the pull-out side portion extends outwardly from a hand-holding side edge, and the two guide rail assemblies are located on both sides of the supporting bottom, and the first water receiving tray and the second water receiving tray are stacked in the receiving groove.

[0014] The present invention further provides a duct type indoor unit, comprising a shell and an evaporator arranged in the shell, and also comprising the above-mentioned water receiving tray assembly arranged in the shell.

[0015] Furthermore, a liquid level switch for monitoring the water level in the water receiving tray assembly is also provided in the shell.

[0016] The present invention also provides a duct unit, comprising the duct type indoor unit as described above.

[0017] Compared with the prior art, the water receiving tray assembly, the duct type indoor unit and the duct machine provided by the present invention have one of the following beneficial effects:

[0018] 1. By setting up a double-layer water receiving tray, namely the first water receiving tray and the second water receiving tray, and providing a supporting protrusion in the first water receiving tray, the evaporator can be placed at a high position, and the problem of corrosion caused by the evaporator being soaked in water is effectively solved;

[0019] 2. The accumulated water in the water receiving tray assembly can be pumped out by a water pump, which reduces the installation difficulty of the duct type indoor unit. Even when the installation angle of the duct type indoor unit is incorrect, the accumulated water in the water receiving assembly can be discharged;

[0020] 3. The pull-out cover plate and the double-layer water tray can be directly pulled out by manual operation, so that manual drainage and emergency maintenance can be performed when the duct-type indoor unit encounters drainage failures due to various reasons such as drainage pipe blockage;

[0021] 4. Due to the innovation of the structure of the docking water pan, the installation position of the water pump can be changed to reserve more space for the evaporator. Under the premise of ensuring that the lateral space of the shell of the ducted indoor unit remains unchanged, the heat exchange efficiency of the ducted indoor unit can be effectively improved by lengthening the evaporator and widening the air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a cross-sectional structural schematic diagram of the air duct type indoor unit of the present invention;

[0024] Figure 2 It is a schematic diagram of the explosion when the water receiving pan assembly and the water pump are assembled in the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure after the water receiving tray assembly and the water pump are assembled in the present invention;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the first water receiving tray in the present invention;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the second water receiving tray in the present invention;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the drawer cover plate in the present invention;

[0029] Figure 7 It is a schematic diagram of the state when the water receiving tray assembly of the present invention is pulled out from the duct type indoor unit;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the water receiving tray assembly in the present invention in a pulled-out state;

[0031] Fig. 9 It is an exploded schematic diagram of the guide rail assembly in the present invention;

[0032] Fig.10 It is a schematic diagram of the internal structure of the duct type indoor unit of the present invention from a top view;

[0033] Fig.11 It is a schematic diagram of the external side view structure of the duct type indoor unit of the present invention;

[0034] Fig.12 It is a schematic diagram of the internal structure of the duct-type indoor unit in the prior art from a top view;

[0035] Fig.13 It is a schematic diagram of the external side view structure of the duct type indoor unit in the prior art;

[0036] Among them, the main marks of the drawings in the figure are:

[0037] 1. First water tray; 2. Second water tray; 3. Pull-out cover; 4. Water pump; 5. Drain pipe; 6. Shell; 7. Evaporator; 8. Liquid level switch; 9. Air outlet;

[0038] 11. Support protrusion; 12. Drainage gap; 13. Notch;

[0039] 21. water storage tank; 22. drainage part; 23. diversion inclined part;

[0040] 31. first guide rail; 32. second guide rail; 33. first roller; 34. second roller;

[0041] 35. Supporting bottom; 36. Pull-out side; 37. Receiving slot; 38. Hand-holding side. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] The water tray is a major component of the duct indoor unit (also known as the duct indoor unit). Its main function is to collect condensed water generated on the surface of the evaporator during the operation of the duct unit. It is also called a condensation tray. When the duct unit is dehumidifying or cooling, the water vapor in the air will condense into water droplets when it encounters the lower temperature evaporator surface. These water droplets are collected and flow into the water tray, and finally discharged to the outside of the air conditioner through the pipe, keeping the indoor air dry and preventing water droplets from falling on the ground and causing safety problems and discomfort. However, looking at the common water trays on the market, they will have water accumulation and overflow problems after the duct unit is used for a long time. More accumulated water will corrode the evaporator, and the overflowed accumulated water will penetrate the ceiling, causing the ceiling to mold and drip. Moreover, if the accumulated water is not cleaned for a long time, it is easy for the water tray to produce scale and gel to clog the drain pipe.

[0044] In this regard, the present invention proposes a water receiving pan assembly, a duct type indoor unit and a duct machine, which can solve the problems of evaporator corrosion due to water immersion, water accumulation and overflow in the water receiving pan, difficulty in repairing the water receiving pan after accidental blockage and insufficient heat exchange efficiency of the duct type indoor unit in the prior art.

[0045] Please also read Figures 1 to 6 The water receiving tray assembly proposed by the present invention comprises:

[0046] A first water receiving tray 1, wherein a support protrusion 11 for placing the evaporator 7 is provided in the first water receiving tray 1, the support protrusion 11 is high in the middle and gradually lowers on both sides, and at least the support protrusion 11 is provided with a drainage slit 12;

[0047] The second water receiving tray 2 supports the first water receiving tray 1 and collects condensed water dripping through the drainage slit 12 .

[0048] The water receiving tray assembly proposed in the present invention uses a double-layer water receiving tray structure, the first water receiving tray 1 can be regarded as an upper water receiving tray, and the second water receiving tray 2 can be regarded as a lower water receiving tray; at the same time, a supporting protrusion 11 is provided in the first water receiving tray 1, and the supporting protrusion 11 is in a shape that is high in the middle and gradually lowers on both sides, and the supporting protrusion 11 is provided with a drainage slit 12, thereby placing the evaporator 7 at a high position, and at the same time allowing the condensed water generated when the evaporator 7 is working to drip into the second water receiving tray 2 through the drainage slit 12, effectively solving the problem of corrosion caused by the evaporator 7 being soaked in accumulated water.

[0049] It should be understood that drainage slits 12 may also be provided in the surrounding part of the first water receiving tray 1 except for the supporting protrusion 11. The arrangement direction of the drainage slits 12 may be various, for example, a part of the drainage slits 12 may be arranged in a horizontal interval, and another part of the drainage slits 12 may be arranged in a vertical interval. Since the supporting protrusion 11 is in a shape that is high in the middle and gradually lowers on both sides, it can also play a role in guiding flow.

[0050] like Figure 2 , Figure 4 , Figure 5 As shown, a water storage tank 21 is formed inside the second water receiving tray 2, and the bottom wall of the water storage tank 21 includes a drainage portion 22 and a diversion inclined portion 23 surrounding the drainage portion 22; a notch 13 is opened at the position of the first water receiving tray 1 corresponding to the drainage portion 22, and the notch 13 is used for the pumping end of the water supply pump 4 to pass through so that the condensed water in the water storage tank 21 can be pumped out into the drain pipe 5 through the water pump 4.

[0051] This design allows the condensed water to drip into the water storage tank 21 reserved in the second water receiving tray 2 and then be pumped out by the water pump 4, so that the accumulated water inside the water receiving tray assembly can be drained smoothly without tilting the water receiving tray assembly, effectively solving the problem of water overflow in the single-layer water receiving tray caused by workers not installing the water receiving tray at an angle according to the existing single-layer water receiving tray specifications.

[0052] It should be understood that the drainage portion 22 is a drainage plane, and the groove depth of the diversion inclined portion 23 gradually increases in the direction close to the drainage portion 22. The shape of the diversion inclined portion 23 is designed in this way, so that the diversion inclined portion 23 can play a diversion role. However, the present invention does not limit the inclination angle of the diversion inclined portion 23. The diversion inclined portion 23 can also have multiple inclination angles, and the diversion inclined portion 23 can be divided into different diversion sub-portions according to different inclination angles. Of course, multiple diversion sub-portions and the drainage portion 22 can also form the bottom wall of the water storage tank 21 through an integrated molding process.

[0053] like Figure 2 , Figure 3 , Figure 7As shown, the water receiving tray assembly further comprises a pull-out cover plate 3 for supporting the first water receiving tray 1 and the second water receiving tray 2 , and two guide rail assemblies for pulling out are arranged on both sides of the pull-out cover plate 3 .

[0054] It should be understood that when the pull-out cover plate 3 is pulled out manually, the first water receiving tray 1 and the second water receiving tray 2 are pulled out together, so that the water tray assembly can be inspected and repaired.

[0055] This design enables the double-layer water collecting pan structure to be embedded and installed in the pull-out cover plate 3, and the pull-out cover plate 3 can be directly pulled out through the guide rail assembly. The three-layer design of the water collecting pan assembly allows the pull-out cover plate 3 together with the double-layer water collecting pan to be directly pulled out manually when encountering unexpected drainage failures due to various reasons such as blockage of the drain pipe 5, so as to facilitate manual drainage and emergency maintenance of the water collecting pan assembly.

[0056] like Figure 2 , Figure 7 , Figure 8 As shown, the guide rail assembly includes a first guide rail 31 and a second guide rail 32 . The first guide rail 31 is slidably disposed on the second guide rail 32 and is fixedly connected to the drawer cover 3 .

[0057] Such a design enables the pull-out function of the pull-out cover plate 3 to be realized through the cooperation between the first guide rail 31 and the second guide rail 32, which is convenient for users to operate.

[0058] It should be understood that the first guide rail 31 can be fixed to the drawer cover plate 3 by a spot welding process, while the second guide rail 32 is fixedly connected to the housing 6 of the duct type indoor unit.

[0059] like Fig. 9 As shown, a first roller 33 is provided at one end of the first guide rail 31 , and a second roller 34 is provided at one end of the second guide rail 32 away from the first roller 33 . The first roller 33 can guide the first guide rail 31 .

[0060] This design allows the first guide rail 31 to slide quickly along the second guide rail 32, so that the user can easily pull out or push in the drawer cover 3 together with the double-layer water receiving tray.

[0061] like Fig. 9 As shown, the first guide rail 31 adopts a U-shaped folded edge structure opening downward, and the second guide rail 32 adopts a U-shaped folded edge structure opening upward.

[0062] This design allows the first guide rail 31 to move relative to the second guide rail 32. At the same time, since there is no folded edge at the opening of the second guide rail 32, the opening will not limit the first guide rail 31. During the manual operation of pulling the pull-out cover 3, if the pull-out cover 3 is felt to collide with other parts, the pull-out cover 3 can be slightly tilted and lifted before pulling. The user can easily remove the pull-out cover 3 together with the double-layer water tray from the duct type indoor unit.

[0063] like Figure 2 , Figure 6 As shown, the pull-out cover 3 includes an integrally arranged supporting bottom 35 and a pull-out side 36, a receiving groove 37 is formed inside the supporting bottom 35, and a hand-holding side 38 is extended outward from the top edge of the pull-out side 36. Two guide rail assemblies are located on both sides of the supporting bottom 35, and the first water receiving tray 1 and the second water receiving tray 2 are stacked in the receiving groove 37.

[0064] This design enables the pull-out cover plate 3 to support the double-layer water tray and facilitate the user to pull it out easily. The overall structure of the pull-out cover plate 3 is simple and easy to implement.

[0065] Please also read Figure 1 The duct type indoor unit proposed in the present invention at least comprises a housing 6, an evaporator 7 and a water receiving tray assembly arranged in the housing 6. The structure of the water receiving tray assembly has been described in detail above and will not be repeated here.

[0066] The duct type indoor unit proposed in the present invention effectively solves the problem of corrosion caused by evaporator 7 being soaked in accumulated water, because the water receiving tray assembly adopts a double-layer water receiving tray structure.

[0067] In addition, a liquid level switch 8 for monitoring the water level in the water receiving tray assembly is also provided in the housing 6 of the duct type indoor unit. When it is detected that there is too much water in the water receiving tray assembly, a warning will be issued or the duct type indoor unit will be forcibly shut down, thereby preventing the duct type indoor unit from becoming moldy due to water overflowing from the water receiving tray assembly and penetrating the ceiling during operation.

[0068] In addition, due to the use of the water receiving pan assembly proposed by the present invention, the installation position of the water pump 4 can be changed to reserve more space for the evaporator 7. At the same time, under the premise of ensuring that the lateral space of the shell 6 remains unchanged, the heat exchange efficiency of the duct type indoor unit can be effectively improved by lengthening the evaporator 7 and widening the air outlet 9.

[0069] The duct unit proposed in the present invention includes the duct type indoor unit as described above. Since the duct type indoor unit has better structural reliability and higher heat exchange efficiency, the overall performance of the duct unit is more excellent.

[0070] For a better understanding, a comparison is made below between the conventional duct-type indoor unit and the duct-type indoor unit of the present invention.

[0071] Fig.10 The internal top view of the duct type indoor unit of the present invention is shown. Fig.11 The figure shows the external side view of the duct type indoor unit of the present invention. Fig.12 The figure shows the internal top view of the duct type indoor unit in the prior art. Fig.13 The figure shows an external side view of the duct type indoor unit in the prior art. It can be seen from the above figures that the water pump 4 in the prior art is installed near the left side of the duct type indoor unit, but the space occupied by the water pump 4 will affect the reserved space for the evaporator 7 of the duct type indoor unit. However, after the present invention adopts a newly designed water receiving pan assembly, the water pump 4 can be installed near the middle of the duct type indoor unit, reserving more space for the evaporator 7. The present invention can effectively increase the heat exchange area of ​​the evaporator 7 by lengthening the evaporator 7; at the same time, the present invention widens the air outlet 9 of the duct type indoor unit, which can effectively increase the air outlet of the duct type indoor unit under the premise that the overall lateral size of the duct type indoor unit remains unchanged; thereby effectively improving the heat exchange efficiency of the duct type indoor unit.

[0072] Please also read Figures 1 to 11 The water receiving tray assembly proposed in the present invention mainly includes a first water receiving tray 1, a second water receiving tray 2 and a pull-out cover plate 3.

[0073] like Figure 4 As shown, a supporting protrusion 11 is provided in the first water receiving tray 1. The supporting protrusion 11 is high in the middle and gradually lowers on both sides. The first water receiving tray 1 (including the supporting protrusion 11) is provided with multiple drainage slits 12. A notch 13 is provided on the rear side of the first water receiving tray 1.

[0074] like Figure 5 As shown, a water storage tank 21 is formed inside the second water receiving tray 2 , and a bottom wall of the water storage tank 21 includes a drainage portion 22 and a diversion inclined portion 23 surrounding the drainage portion 22 .

[0075] like Figure 6 As shown, the drawer cover 3 includes an integrally arranged supporting bottom 35 and a drawer side 36, a receiving groove 37 is formed inside the supporting bottom 35, a hand-held side 38 is extended outward from the top edge of the drawer side 36, and two guide rail assemblies are arranged on both sides of the supporting bottom 35. Fig. 9 As shown, the guide rail assembly includes a first guide rail 31 and a second guide rail 32. The first guide rail 31 is fixed to one side of the supporting bottom 35. A first roller 33 is provided at the end of the first guide rail 31, and a second roller 34 is provided at the end of the second guide rail 32. At the same time, the first guide rail 31 adopts a U-shaped folding structure opening downward, and the second guide rail 32 adopts a U-shaped folding structure opening upward.

[0076] like Figure 8 As shown, the second water receiving tray 2 is embedded in the receiving groove 37 of the pull-out cover plate 3, and then the first water receiving tray 1 is supported by the second water receiving tray 2, thereby forming a water receiving tray assembly. Figure 2 , Figure 3 As shown, after the water receiving tray assembly and the water pump 4 are assembled together, the water pumping end of the water pump 4 passes through the notch 13 of the first water receiving tray 1 and corresponds to the drainage portion 22 in the second water receiving tray 2. For a duct type indoor unit, Figure 1 , Figure 4 , Figure 7 As shown, the evaporator 7 and the water pump 4 are fixed in the shell 6, and the evaporator 7 is placed on the supporting protrusion 11 of the first water receiving tray 1, and the second guide rails 32 on the left and right sides of the pull-out cover 3 are fixed on the inner sides of the left and right side panels of the shell 6, and the pull-out cover 3 incorporates the lower side panel of the air outlet frame.

[0077] In actual application, the condensed water generated during the operation of the evaporator 7 first drips onto the first water receiving tray 1, and then continues to move downward under the diversion effect of the first water receiving tray 1, and after reaching the drainage gap 12, it drips into the water storage tank 21 of the second water receiving tray 2 under the action of its own gravity. When a certain amount of condensed water is collected in the water receiving tray assembly, the water pump 4 is turned on, and the condensed water in the water receiving tray assembly is pumped out to the drain pipe 5 through the water pump 4 for discharge. When the water level in the water receiving tray assembly exceeds the warning water level, the water receiving tray assembly can be directly pulled out by manual operation, and then manual drainage and emergency maintenance can be performed. And in the process of pulling out the water receiving tray assembly, considering that the height of the rear side plate of the pull-out cover plate 3 is slightly higher than the height of the lowest point of the water pump 4, the pull-out cover plate 3 can be slightly tilted and lifted before pulling, so as to prevent the rear side plate of the pull-out cover plate 3 from colliding with the water pump 4.

[0078] The water receiving pan assembly, duct type indoor unit and duct machine proposed by the present invention have the following beneficial effects: 1. The water receiving pan assembly adopts a double-layer water receiving pan structure, which can place the evaporator at a high position and effectively solve the problem of corrosion caused by the evaporator being soaked in accumulated water; 2. The accumulated water in the water receiving pan assembly can be pumped out by a water pump, which reduces the installation difficulty of the duct type indoor unit. Even when the installation angle of the duct type indoor unit is incorrect, the accumulated water in the water receiving assembly can be discharged; 3. The pull-out cover plate together with the double-layer water receiving pan can also be directly pulled out by manual operation, so that manual drainage and emergency maintenance can be performed when the duct type indoor unit encounters drainage failures caused by various reasons such as drainage pipe blockage; 4. Due to the innovation of the structure of the water receiving pan, the installation position of the water pump can be changed to reserve more space for the evaporator. On the premise of ensuring that the lateral space of the shell remains unchanged, the heat exchange efficiency of the duct type indoor unit can be effectively improved by lengthening the evaporator and widening the air outlet.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water tray assembly, characterized in that: include: A first water receiving tray, wherein a supporting protrusion for placing the evaporator is provided in the first water receiving tray, the supporting protrusion is high in the middle and gradually lowers on both sides, and at least the supporting protrusion is provided with a drainage slit; The second water receiving tray supports the first water receiving tray and collects condensed water dripping through the drainage slit.

2. The water tray assembly according to claim 1, characterized in that: A water storage tank is formed inside the second water receiving tray, and the bottom wall of the water storage tank includes a drainage portion and a diversion inclined portion surrounding the drainage portion; a notch is opened at the position of the first water receiving tray corresponding to the drainage portion, and the notch is used for the pumping end of the water supply pump to pass through so that the condensed water in the water storage tank can be pumped into the drain pipe through the water pump.

3. The water tray assembly according to claim 1, characterized in that: The water receiving tray assembly also includes a pull-out cover plate, which supports the first water receiving tray and the second water receiving tray. Two guide rail assemblies for pulling out are arranged on both sides of the pull-out cover plate.

4. The water tray assembly according to claim 3, characterized in that: The guide rail assembly includes a first guide rail and a second guide rail. The first guide rail is slidably arranged on the second guide rail and is fixedly connected to the drawer cover.

5. The water tray assembly according to claim 4, characterized in that: A first roller is disposed at one end of the first guide rail, and a second roller is disposed at one end of the second guide rail away from the first roller.

6. The water tray assembly according to claim 4, characterized in that: The first guide rail adopts a U-shaped folded edge structure opening downward, and the second guide rail adopts a U-shaped folded edge structure opening upward.

7. The water tray assembly according to claim 3, characterized in that: The pull-out cover includes an integrally arranged supporting bottom and a pull-out side portion, a receiving groove is formed inside the supporting bottom, and the top edge of the pull-out side portion extends outwardly to form a hand-holding side edge, the two guide rail assemblies are located on both sides of the supporting bottom, and the first water receiving tray and the second water receiving tray are stacked in the receiving groove.

8. A duct type indoor unit, comprising a housing and an evaporator arranged in the housing, characterized in that: It also includes a water receiving tray assembly as described in any one of claims 1 to 7 disposed in the shell.

9. The duct type indoor unit according to claim 8, characterized in that: A liquid level switch for monitoring the water level in the water receiving tray assembly is also provided in the shell.

10. Duct machine, characterized in that, It comprises the duct type indoor unit as described in claim 8 or 9.

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