Float switch mounting structure and ceiling machine

Abstract

The invention provides a float switch mounting structure and a ceiling machine. The float switch mounting structure comprises a float switch and a frame, the float switch is arranged on the inner side of the frame, the frame comprises a first side plate, a second side plate, a third side plate and a fourth side plate, the third side plate and the second side plate are oppositely arranged and located on the left side and the right side of the float switch respectively, the first side plate is arranged on the front side, and the fourth side plate is arranged on the upper side. The float switch is connected with the ceiling machine through the fourth side plate. No side plate needs to be arranged on the rear side of the frame, and the float switch is surrounded by the shell and the frame and prevented from being blown by air generated by the ceiling unit air duct. The float switch installation structure further comprises a first magnetic part, a second magnetic part and an installation frame, the float switch can move in the direction towards the second magnetic part under the buoyancy effect of water, the first magnetic part makes contact with the second magnetic part, and therefore an electric signal is transmitted to the water pump; and the water pump is triggered to start to work to discharge condensate water generated in the water pan in time.

Description

Technical Field

[0001] The invention relates to the technical field of ceiling machines, and in particular to a float switch installation structure and a ceiling machine. Background Art

[0002] The ceiling machine includes a water tray, a heat exchanger, a water pump and a float switch. The water tray of the ceiling machine is set below the heat exchanger to receive the condensed water generated by the heat exchanger during operation. The float switch is used to detect the water level in the water tray. If the water level exceeds a certain height, the water pump starts to work to discharge the condensed water in the water tray in time to avoid affecting the reliability and safety of the ceiling machine. Due to the light structure of the float switch, the wind generated by the ceiling machine air duct can easily blow the float switch, resulting in inaccurate water level detection and affecting the operation of the water pump. Summary of the invention

[0003] In view of this, the present invention aims to propose a float switch installation structure and a ceiling machine, which uses a shell and a frame to enclose the float switch to prevent the wind generated by the ceiling machine air duct from blowing the float switch, thereby improving the accuracy of water level detection.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A float switch installation structure includes a float switch and a frame, wherein the float switch is arranged on the inner side of the frame, and the frame includes a first side panel, a second side panel, a third side panel and a fourth side panel, wherein the third side panel and the second side panel are arranged opposite to each other and are respectively located on the left and right sides of the float switch, wherein the first side panel is arranged on the front side of the float switch, and the fourth side panel is arranged on the upper side of the float switch, and the float switch is connected to a ceiling machine through the fourth side panel. There is no need to set a side panel on the side of the float switch facing the shell, i.e., the rear side of the frame, and the float switch is surrounded by the shell and the frame to prevent the wind generated by the ceiling machine air duct from blowing the float switch. The float switch is connected to the ceiling machine through the fourth side panel, which increases the contact area between the float switch and the ceiling machine and improves the connection stability.

[0006] Furthermore, the float switch installation structure also includes a first magnetic member, a second magnetic member and a mounting frame, the float switch is connected to the frame through the mounting frame, the float switch is connected to the first magnetic member, the mounting frame is connected to the second magnetic member, when the first magnetic member moves to the first moving position, the first magnetic member and the second magnetic member are not in contact, and the distance between the two is the farthest, when the first magnetic member moves to the second moving position, the first magnetic member and the second magnetic member are in contact. When the water level in the water receiving tray rises, the float switch will move in the direction toward the second magnetic member due to the buoyancy of the water, so that the first magnetic member and the second magnetic member are in contact, thereby transmitting an electrical signal to the water pump of the ceiling machine, triggering the water pump to start working and discharge the condensed water generated in the water receiving tray in time.

[0007] Furthermore, the float switch includes a float body, two legs and a support column, the two legs are symmetrically arranged, one side of the legs is connected to the float body, and the other side is connected to the support column, and the left and right sides of the first magnetic member are respectively connected to a leg. The legs can be used to support and connect the first magnetic member, so that the first magnetic member can be installed without making too many changes to the float switch structure and without adding additional connectors.

[0008] Furthermore, the mounting frame includes a bottom plate and a mounting groove, the bottom plate is connected to the frame and used to position the mounting frame on the frame. The second magnetic member is connected to the mounting groove and used to position the second magnetic member on the mounting frame.

[0009] Furthermore, the bottom plate is provided with a third mounting hole, one side of the support column is connected to the support leg, and the other side extends into the third mounting hole. When the float switch moves up and down, the third mounting hole not only provides a space for the support column to move up and down, but also prevents the support column from shaking, thereby preventing the float switch from shaking and avoiding affecting the accuracy of the water level detection result.

[0010] Furthermore, an extension plate is provided on the upper side of the support leg, the bottom plate extends toward the direction close to the extension plate to form a boss, the boss is provided with a slot, and the extension plate is inserted into the slot. The slot provides a space for the extension plate to move up and down, and when the extension plate is inserted into the slot, the slot is used to position the extension plate, which can prevent the support leg from shaking, thereby preventing the float switch from shaking, and improving the accuracy of the water level detection result.

[0011] Furthermore, the mounting frame further comprises a support platform, one side of the support platform is connected to the bottom plate, and the other side is connected to the mounting groove. The second magnetic member can be further stably supported by providing the support platform, and the overall strength of the mounting frame is improved.

[0012] Furthermore, the first side plate is arranged on the outside of the heat exchanger. The first side plate includes an extension portion, which extends and protrudes toward the heat exchanger, and an installation space is formed between the extension portion and the first side plate. The provision of the extension portion is not only conducive to improving the overall structural strength of the frame, but also the extension portion has a certain thickness, which increases the wear resistance of the water pipe to the extension portion. The installation space formed between the extension portion and the first side plate is convenient for the operator to put his hand into the installation space when disassembling the float switch to take the frame, thereby improving the flexibility and convenience of operation.

[0013] Furthermore, the float switch mounting structure is connected to the ceiling machine through a mounting plate, the mounting plate includes a second mounting hole and a clamping portion, the fourth side plate includes a first mounting hole and two reinforcing ribs, the first mounting hole and the second mounting hole are connected by a fastener, and the clamping portion is clamped between the two reinforcing ribs. Through the cooperation between the first mounting hole and the second mounting hole, and the cooperation between the clamping portion and the reinforcing ribs, the connection stability of the float switch mounting structure and the mounting plate can be improved through multiple cooperations, so as to prevent the float switch mounting structure from falling off and loosening during long-term use of the ceiling machine.

[0014] Compared with the prior art, the float switch installation structure of the present invention has the following advantages:

[0015] (1) The frame is used to place and install the float switch, and can protect the float switch, prevent foreign objects from colliding with the float switch, and provide a protective barrier for the float switch, which can prevent the wind generated by the air duct from blowing the float switch, thereby improving the accuracy of water level detection.

[0016] (2) The first magnetic component is installed without making too many changes to the float switch structure and without adding additional connectors, and the water pump is started and stopped by using the first magnetic component and the second magnetic component.

[0017] (3) Through the cooperation between the first mounting hole and the second mounting hole, and the cooperation between the clamping portion and the reinforcing rib, the connection stability between the float switch mounting structure and the mounting plate can be improved, thereby preventing the float switch mounting structure from falling off and loosening during long-term use of the ceiling machine.

[0018] Another aspect of the present invention further provides a ceiling machine, which includes the above-mentioned float switch installation structure, and also includes a heat exchanger, a water receiving tray, a water pump and a housing, wherein the heat exchanger includes a head end and a tail end, wherein the head end, the tail end and the housing constitute an accommodation space, and the float switch installation structure and the water pump are arranged in the accommodation space. The advantages of the ceiling machine and the above-mentioned float switch installation structure over the prior art are the same, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic structural diagram of a float switch installation structure according to the present invention from a first viewing angle;

[0021] Figure 2 This is a schematic structural diagram of a float switch installation structure according to the present invention from a second viewing angle;

[0022] Figure 3 This is a schematic structural diagram of a float switch installation structure according to the present invention from a third viewing angle;

[0023] Figure 4 This is a schematic structural diagram of the float switch installation structure of the present invention without the frame from a first perspective;

[0024] Figure 5 This is a schematic structural diagram of the float switch installation structure of the present invention from a second perspective with the frame removed;

[0025] Figure 6 This is a schematic structural diagram of the float switch installation structure of the present invention without the frame from a third perspective;

[0026] Figure 7 It is a structural schematic diagram of the mounting plate of the present invention;

[0027] Figure 8 It is a front view of the ceiling machine described in the present invention.

[0028] Description of reference numerals:

[0029] 1. Float switch; 2. Float body; 3. Support foot; 4. First magnetic part; 5. Second magnetic part; 6. Extension plate; 7. Card slot; 8. Mounting frame; 9. Bottom plate; 10. Support platform; 11. Mounting slot; 12. Support column; 13. Frame; 14. First side plate; 15. Second side plate; 16. Third side plate; 17. Fourth side plate; 18. Wire hole; 19. Wire slot; 20. Extension part; 21. First mounting hole; 22. Reinforcement rib; 23. Mounting plate; 24. Second mounting hole; 25. Card connection part; 26. Third mounting hole; 27. Shell. DETAILED DESCRIPTION

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. The embodiments described in the present invention are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0031] It should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] like Figure 1-3A float switch installation structure shown includes a float switch 1 and a frame 13. The float switch 1 is arranged on the inner side of the frame 13. The frame 13 includes a first side plate 14, a second side plate 15, a third side plate 16 and a fourth side plate 17. The third side plate 16 and the second side plate 15 are arranged opposite to each other and are respectively located on the left and right sides of the float switch 1. The first side plate 14 is arranged on the front side of the float switch 1. The fourth side plate 17 is arranged on the upper side of the float switch 1, and the float switch 1 is connected to the ceiling machine through the fourth side plate 17. The frame 13 is used to place and install the float switch 1, and can protect the float switch 1 and prevent foreign objects from colliding with the float switch 1. For the ceiling machine, the float switch installation structure is arranged between the heat exchanger and the ceiling machine housing 27, and the air duct of the ceiling machine is formed between the heat exchanger and the housing 27. The float switch 1 is used to detect the height of the condensed water level in the water tray of the ceiling machine. When the water level reaches a certain height, the water pump of the ceiling machine will work to discharge the condensed water in the water tray in time to ensure the operational reliability and safety of the ceiling machine. The frame 13 is used to provide a protective barrier for the float switch 1, which can prevent the wind generated by the air duct from blowing the float switch 1 and improve the accuracy of water level detection. There is no need to set a side panel on the side of the float switch 1 facing the shell 27, that is, the rear side of the frame 13. The shell 27 and the frame 13 are used to enclose the float switch 1 to prevent the wind generated by the ceiling machine air duct from blowing the float switch 1. The float switch 1 is connected to the ceiling machine through the fourth side panel 17, which increases the contact area between the float switch 1 and the ceiling machine and improves the connection stability.

[0033] The float switch mounting structure also includes a first magnetic member 4, a second magnetic member 5 and a mounting frame 8. The float switch 1 is connected to the frame 13 through the mounting frame 8. The float switch 1 is connected to the first magnetic member 4, and the mounting frame 8 is connected to the second magnetic member 5. When the first magnetic member 4 moves to the first moving position, the first magnetic member 4 and the second magnetic member 5 are not in contact, and the distance between the two is the farthest. When the first magnetic member 4 moves to the second moving position, the first magnetic member 4 and the second magnetic member 5 are in contact. It should be noted that the first magnetic member 4 can also be controlled to move to an intermediate moving position between the first moving position and the second moving position, that is, the first magnetic member 4 and the second magnetic member 5 are not in contact, but the distance between the two is not the farthest distance. When there is no water in the water receiving tray or the water level is low, the first magnetic member 4 and the second magnetic member 5 are not in contact, and the first magnetic member 4 is in the first moving position or the intermediate moving position. When the water level in the water tray rises, the float switch 1 will move in the direction toward the second magnetic part 5 due to the buoyancy of the water, so that the first magnetic part 4 and the second magnetic part 5 will contact each other, thereby transmitting an electrical signal to the water pump of the ceiling machine, triggering the water pump to start working and discharge the condensed water generated in the water tray in time.

[0034] like Figure 4-6As shown, the float switch 1 includes a float body 2, two legs 3 and a support column 12, the two legs 3 are symmetrically arranged, one side of the legs 3 is connected to the float body 2, and the other side is connected to the support column 12, and the left and right sides of the first magnetic member 4 are respectively connected with a leg 3. The legs 3 can be used to support and connect the first magnetic member 4, and the first magnetic member 4 can be installed without making too many changes to the structure of the float switch 1 and without adding additional connectors. This can not only reduce the cost of redesigning, manufacturing, and replacing each component to the greatest extent, but also for the ceiling machine production line, there is no need to make too many or too large changes, which is conducive to saving the investment of manpower and material resources when the ceiling machine manufacturer updates the technology and production line. The symmetrically arranged legs 3 can not only stably support the float body 2, but also improve the connection stability with the first magnetic member 4. Since the first magnetic member 4 is connected to the legs 3, the float body 2 moves up and down under the buoyancy of the water, and drives the first magnetic member 4 to move up and down, so as to achieve the approach and distance between the first magnetic member 4 and the second magnetic member 5.

[0035] The mounting frame 8 includes a bottom plate 9 and a mounting groove 11, and the bottom plate 9 is connected to the frame 13, and is used to position the mounting frame 8 on the frame 13. The second magnetic member 5 is connected to the mounting groove 11, and is used to position the second magnetic member 5 on the mounting frame 8. Furthermore, two mounting grooves 11 are provided, and the two sides of the second magnetic member 5 are respectively inserted into the corresponding mounting grooves 11, which not only improves the connection stability of the second magnetic member 5, but also facilitates the assembly of the second magnetic member 5 by insertion.

[0036] The bottom plate 9 is provided with a third mounting hole 26, one side of the support column 12 is connected to the support leg 3, and the other side extends into the third mounting hole 26. When the float switch 1 moves up and down, the third mounting hole 26 not only provides space for the support column 12 to move up and down, but also prevents the support column 12 from shaking by using the third mounting hole 26, thereby preventing the float switch 1 from shaking and avoiding affecting the accuracy of the water level detection result. Furthermore, the fourth side plate 17 is provided with a through hole, which is not only conducive to reducing the weight of the fourth side plate 17, but also provides space for the movement of the support column 12.

[0037] An extension plate 6 is arranged on the upper side of the support leg 3, and the bottom plate 9 extends toward the direction close to the extension plate 6 to form a boss, and a slot 7 is arranged corresponding to the boss, and the extension plate 6 cooperates with the slot 7, and the extension plate 6 is inserted into the slot 7. When the float switch 1 moves up and down, the extension plate 6 located on the support leg 3 also moves up and down. As the distance between the first magnetic member 4 and the second magnetic member 5 becomes closer and closer, the depth of the extension plate 6 inserted into the slot 7 becomes deeper and deeper. The slot 7 provides a space for the extension plate 6 to move up and down, and when the extension plate 6 is inserted into the slot 7, the extension plate 6 is positioned by the slot 7, which can prevent the support leg 3 from shaking, thereby preventing the float switch 1 from shaking, and improving the accuracy of the water level detection result. The boss is not only conducive to improving the structural stability of the mounting frame 8, but also the bottom plate 9 only extends to form the boss near the extension plate 6, rather than the entire bottom plate 9 extending to form the boss, which can save raw materials and reduce costs. The bottom plate 9 extends to form the boss, so that the boss and the slot 7 located on the boss have a certain height, providing a space for the extension plate 6 to move up and down.

[0038] Furthermore, the mounting frame 8 also includes a support platform 10, one side of which is connected to the bottom plate 9, and the other side is connected to the mounting groove 11. That is, the support platform 10 is arranged between the second magnetic member 5 and the bottom plate 9. By providing the support platform 10, the second magnetic member 5 can be further stably supported, and it is beneficial to improve the overall strength of the mounting frame 8. Two mounting grooves 11 are provided, and accordingly, a support platform 10 is correspondingly provided on the upper side of each mounting groove 11. The space between the two support platforms 10 forms a receiving space, and the extension plate 6, the boss and the card slot 7 are located in the receiving space. The various components of the float switch mounting structure are reasonably arranged, the occupied space of the float switch mounting structure is reduced, and the compactness of the structure is improved. Furthermore, the interior of the support platform 10 is at least partially hollowed out, which is not only beneficial to saving raw materials, but also can reduce weight and reduce the load-bearing capacity of the mounting frame 8, thereby improving the service life of the float switch mounting structure.

[0039] Example 2

[0040] In this embodiment, the first side plate 14 is arranged on the outside of the heat exchanger. The first side plate 14 includes an extension portion 20, which extends and protrudes toward the heat exchanger, and forms an installation space between the extension portion 20 and the first side plate 14. The water pump includes a water pipe. Since the float switch 1 is arranged near the water pump, the water pipe will hit the frame 13. The provision of the extension portion 20 is not only conducive to improving the overall structural strength of the frame 13, but also the extension portion 20 has a certain thickness, which increases the wear resistance of the water pipe to the extension portion 20. The installation space formed between the extension portion 20 and the first side plate 14 is convenient for the operator to put his hand into the installation space when disassembling the float switch 1 to take the frame 13, thereby improving the flexibility and convenience of operation.

[0041] The second side plate 15 includes a wire hole 18 and a wire groove 19, and the second magnetic member 5 is electrically connected to the wire harness. The wire harness passes through the wire hole 18 and the wire groove 19 in sequence, and the wire harness is positioned on the second side plate 15 by using the wire hole 18 and the wire groove 19 to prevent the wire harness from being entangled with other components. The wire hole 18 and the wire groove 19 can be used to organize the wire harness to prevent the wire harness from being disorderly and entangled with each other, and it is also convenient for operators to distinguish different wire harnesses. The wire hole 18 is not only conducive to saving raw materials, but also can reduce the weight of the second side plate 15 and reduce the load-bearing capacity of the frame 13, thereby increasing the service life of the float switch mounting structure.

[0042] like Figure 7 As shown, the float switch mounting structure is connected to the ceiling machine through a mounting plate 23. The mounting plate 23 includes a second mounting hole 24 and a clamping portion 25, and the fourth side plate 17 includes a first mounting hole 21 and two reinforcing ribs 22. The first mounting hole 21 and the second mounting hole 24 are connected by a fastener, and the fastener passes through the first mounting hole 21 and the second mounting hole 24 in sequence, and the clamping portion 25 is clamped between the two reinforcing ribs 22, so as to realize the detachable connection between the float switch mounting structure and the mounting plate 23. Through the cooperation between the first mounting hole 21 and the second mounting hole 24, and the cooperation between the clamping portion 25 and the reinforcing rib 22, the connection stability between the float switch mounting structure and the mounting plate 23 can be improved, and the float switch mounting structure can be prevented from falling off and loosening during long-term use of the ceiling machine. The mounting plate 23 is a sheet metal part, which is beneficial to the structural strength of the mounting plate 23.

[0043] Example 3

[0044] The present invention also proposes a ceiling machine, which adopts the above-mentioned float switch installation structure, and includes a heat exchanger, a water receiving tray, a water pump and a housing 27. The float switch installation structure, the heat exchanger, the water receiving tray and the water pump are all arranged inside the housing 27. The heat exchanger is arranged above the water receiving tray, and the water receiving tray is used to stably support the heat exchanger and receive the condensed water generated by the heat exchanger. The water pump is used to discharge the condensed water in the water receiving tray. The mounting plate 23 is connected to the housing 27, and the float switch installation structure and the mounting plate 23 are detachably connected, so that the float switch installation structure is installed on the ceiling machine.

[0045] Further, such as Figure 8As shown, the heat exchanger includes a head end and a tail end, and the head end, the tail end and the housing 27 constitute an accommodation space. The float switch installation structure and the water pump are arranged in the accommodation space, which is not only conducive to saving the occupied space of the ceiling machine, but also prevents the float switch installation structure and the water pump from interfering with the heat exchanger. The projection area of ​​the housing 27 on the ceiling is a polygon, and the float switch installation structure is arranged at the corner of the housing 27. Placing the float switch installation structure at the corner of the housing 27 is convenient for maintenance personnel to inspect the float switch installation structure without being interfered with by other components of the ceiling machine.

[0046] The ceiling machine also includes other conventional structures of the ceiling machine such as a fan and an electric control box. Since their structures and connection relationships belong to the prior art, they will not be described in detail here.

[0047] 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, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A float switch installation structure, characterized in that: The invention comprises a float switch (1) and a frame (13), wherein the float switch (1) is arranged on the inner side of the frame (13), and the frame (13) comprises a first side plate (14), a second side plate (15), a third side plate (16) and a fourth side plate (17), wherein the third side plate (16) and the second side plate (15) are arranged opposite to each other and are respectively located on the left and right sides of the float switch (1), wherein the first side plate (14) is arranged on the front side of the float switch (1), and the fourth side plate (17) is arranged on the upper side of the float switch (1), and the float switch (1) is connected to a ceiling via the fourth side plate (17).

2. The float switch installation structure according to claim 1, characterized in that: The float switch mounting structure further comprises a first magnetic member (4), a second magnetic member (5) and a mounting frame (8); the float switch (1) is connected to the frame (13) via the mounting frame (8); the float switch (1) is connected to the first magnetic member (4); the mounting frame (8) is connected to the second magnetic member (5); when the first magnetic member (4) moves to a first moving position, the first magnetic member (4) and the second magnetic member (5) are not in contact and the distance between the two is the farthest; when the first magnetic member (4) moves to a second moving position, the first magnetic member (4) and the second magnetic member (5) are in contact.

3. The float switch installation structure according to claim 2, characterized in that: The float switch (1) comprises a float body (2), two legs (3) and a support column (12); the two legs (3) are symmetrically arranged, one side of the legs 3 is connected to the float body (2), and the other side is connected to the support column (12); and the left and right sides of the first magnetic member (4) are respectively connected to a leg (3).

4. The float switch installation structure according to claim 3, characterized in that: The mounting frame (8) comprises a bottom plate (9) and a mounting groove 11, the bottom plate (9) is connected to a frame (13), and the second magnetic member (5) is connected to the mounting groove 11.

5. The float switch installation structure according to claim 4, characterized in that: The bottom plate (9) is provided with a third mounting hole (26); one side of the support column (12) is connected to the support leg (3), and the other side extends into the third mounting hole (26).

6. The float switch installation structure according to claim 4, characterized in that: An extension plate (6) is arranged on the upper side of the support foot (3), the bottom plate (9) extends in a direction close to the extension plate (6) to form a boss, the boss is provided with a slot (7), and the extension plate (6) is inserted into the slot (7).

7. The float switch installation structure according to claim 4, characterized in that: The mounting frame (8) further comprises a support platform (10), one side of the support platform (10) being connected to the bottom plate (9), and the other side of the support platform (10) being connected to the mounting groove (11).

8. The float switch installation structure according to claim 1, characterized in that: The first side plate (14) is arranged on the outer side of the heat exchanger, and the first side plate (14) comprises an extension portion (20), wherein the extension portion (20) extends and protrudes toward the heat exchanger, and an installation space is formed between the extension portion (20) and the first side plate (14).

9. The float switch installation structure according to claim 1, characterized in that: The float switch mounting structure is connected to the ceiling via a mounting plate (23); the mounting plate (23) comprises a second mounting hole (24) and a clamping portion (25); the fourth side plate (17) comprises a first mounting hole (21) and two reinforcing ribs (22); the first mounting hole (21) and the second mounting hole (24) are connected via a fastener; the clamping portion (25) is clamped between the two reinforcing ribs (22).

10. A ceiling machine, characterized in that: The ceiling machine adopts the float switch installation structure described in any one of claims 1 to 9, and the ceiling machine includes a heat exchanger, a water receiving tray, a water pump and a shell (27). The heat exchanger includes a head end and a tail end. The head end, the tail end and the shell (27) constitute an accommodating space. The float switch installation structure and the water pump are arranged in the accommodating space.

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