EC motor and air conditioning unit

Abstract

The utility model relates to an EC motor and an air conditioning unit, and relates to the field of air conditioners. The end cover is arranged on the direct current motor; the connecting assembly is used for installing the end cover on the direct current motor; and the rectifier is arranged in the end cover, the rectifier is electrically connected with the interior of the direct current motor, and the rectifier converts an externally input alternating current into a direct current and transmits the direct current to the direct current motor. The rectifier converts the alternating current into the direct current and transmits the direct current to the direct current motor, so that under the same power, the rotating speed of the fan blades driven by the direct current motor is larger than that of the fan blades driven by the alternating current motor, heat dissipated by the direct current motor is small, and only one row of heat dissipation pipes need to be arranged in the unit; therefore, the purposes of reducing cost and increasing efficiency are achieved.

Description

Technical Field

[0001] The present application relates to the field of air conditioning, and in particular to an EC motor and an air conditioning unit. Background Art

[0002] Air conditioners generally include cold source / heat source equipment, cold and hot medium distribution system, terminal devices and other auxiliary equipment. They mainly include: refrigeration host, water pump, air conditioner outdoor unit and pipeline system. The terminal device is responsible for using the cold and hot water distributed to specifically process the air state so that the air parameters of the target environment meet certain requirements.

[0003] The air conditioner outdoor unit is mainly used to provide wind power. A frame is installed inside the air conditioner outdoor unit, and an AC motor is installed on the frame. Fan blades are installed at the output end of the AC motor. The AC motor drives the fan blades to rotate, thereby providing wind power for the air conditioner unit.

[0004] With respect to the above-mentioned related technologies, the inventors believe that since the efficiency of AC motors is relatively low, the speed that can be provided at the same power is limited. If the speed needs to be increased, more heat dissipation pipes must be installed inside the unit. Utility Model Content

[0005] In order to reduce the use of heat dissipation pipes in a unit, the present application provides an EC motor and an air conditioning unit.

[0006] In a first aspect, the present application provides an EC motor and an air conditioning unit, which adopt the following technical solutions:

[0007] An EC motor, comprising:

[0008] A DC motor is arranged on the frame of the unit;

[0009] An end cover is provided on the DC motor;

[0010] A connecting assembly for mounting the end cover on the DC motor;

[0011] The rectifier is arranged in the end cover, and the rectifier is electrically connected to the inside of the DC motor. The rectifier converts the external input AC power into DC power and transmits it to the DC motor.

[0012] By adopting the above technical solution, the rectifier converts AC power into DC power and transmits DC power to the DC motor, so that under the same power, the speed of the DC motor driving the fan blades to rotate is greater than the speed of the AC motor driving the fan blades to rotate, so that the heat dissipated by the DC motor is less, and only one row of heat pipes needs to be arranged inside the unit, thereby achieving the purpose of reducing costs and increasing efficiency.

[0013] Optionally, the connection assembly includes a first connection seat arranged on the end cover, a second connection seat arranged on the housing of the DC motor, and a connecting threaded member threadedly connected between the first connection seat and the second connection seat.

[0014] By adopting the above technical solution, the first connecting seat and the second connecting seat can be connected to achieve detachable fixed installation between the end cover and the DC motor.

[0015] Optionally, the connecting assembly includes a third connecting seat arranged on the end cover, a fourth connecting seat arranged on the housing of the DC motor, a plug-in slot opened on the fourth connecting seat and plug-matched with the third connecting seat, a mounting tube arranged on the fourth connecting seat, a plug-in rod slidably arranged in the mounting tube and plug-matched with the third connecting seat, and an elastic member arranged between the plug-in rod and the mounting tube, and the plug-in rod passes through the third connecting seat.

[0016] By adopting the above technical solution, the third connecting seat is inserted into the plug-in slot of the fourth connecting seat, and the plug-in rod is pulled outward so that the plug-in rod is completely extended out of the plug-in slot. The elastic member is in a compressed state. When the plug-in rod is aligned with the plug-in hole, the plug-in rod is released so that the elastic member pushes the plug-in rod into the plug-in hole, thereby realizing the rapid installation of the end cover.

[0017] Optionally, an installation assembly is arranged between the DC motor and the frame, and the installation assembly includes a first mounting seat arranged on the housing of the DC motor, a shock-absorbing cylinder arranged on the first mounting seat, and mounting bolts and mounting nuts connecting the shock-absorbing cylinder and the frame of the unit, wherein the mounting bolt passes through the shock-absorbing cylinder, and the mounting bolt is threadedly connected to the mounting nut.

[0018] By adopting the above technical solution, the mounting bolts are passed through the shock-absorbing cylinder and the frame of the unit, the mounting nuts are threadedly connected to the mounting bolts, and the mounting nuts are tightened to achieve the installation of the DC motor. Moreover, the setting of the shock-absorbing cylinder can also play a certain shock-absorbing role on the DC motor.

[0019] Optionally, a clamping interface for clamping the shock absorbing cylinder is provided on the first mounting seat, and two clamping sleeves respectively fitted with two ends of the first mounting seat are provided on the outer side of the shock absorbing cylinder.

[0020] By adopting the above technical solution, it is convenient to remove the shock absorbing cylinder from the card interface, and it is convenient to disassemble, assemble and repair the shock absorbing cylinder. The setting of the clamping sleeve makes it difficult for the shock absorbing cylinder to be separated from the card interface.

[0021] Optionally, a protective layer is provided on the inner side of the shock absorbing cylinder.

[0022] By adopting the above technical solution, the shock-absorbing cylinder can be protected to increase the service life of the shock-absorbing cylinder.

[0023] Optionally, a sealing ring is provided at one end of the end cover close to the DC motor.

[0024] By adopting the above technical solution, one side of the sealing ring is tightly pressed against the rear end of the DC motor, thereby improving the sealing between the end cover and the DC motor.

[0025] In the second aspect, the present application provides an air conditioning unit, which adopts the following technical solution:

[0026] The EC motor also includes a machine unit, wherein a row of heat dissipation pipes is arranged inside the machine unit and at the rear side of the DC motor.

[0027] By adopting the above technical solution, the heat dissipated by the DC motor is less, so only one row of heat dissipation pipes needs to be arranged inside the unit.

[0028] Optionally, a frame for mounting a DC motor is provided inside the unit, a plurality of connecting plates are provided on the frame, and connecting holes for mounting bolts to pass through are opened on the connecting plates.

[0029] By adopting the above technical solution, the shock-absorbing cylinder is aligned with the connecting piece, and then the mounting bolts are passed through the shock-absorbing cylinder and the connecting piece, and the mounting nuts are tightened to achieve the installation of the DC motor.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. The rectifier converts AC power into DC power and transmits the DC power to the DC motor, so that under the same power, the speed of the DC motor driving the fan blades is greater than the speed of the AC motor driving the fan blades, so that the heat dissipated by the DC motor is less, so only one row of heat dissipation pipes need to be arranged inside the unit, thereby achieving the purpose of reducing costs and increasing efficiency;

[0032] 2. Pass the mounting bolts through the shock-absorbing cylinder and the frame of the unit, thread the mounting nuts to the mounting bolts, and tighten the mounting nuts to install the DC motor. In addition, the setting of the shock-absorbing cylinder can also play a certain shock-absorbing role on the DC motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the EC motor;

[0034] Figure 2 It is a cross-sectional view of the DC motor and end cover of the EC motor;

[0035] Figure 3 yes Figure 1 A partial enlarged schematic diagram of part A;

[0036] Figure 4 This is a schematic diagram of the shock absorber and protective layer of the EC motor;

[0037] Figure 5 is a schematic diagram of a second embodiment of an EC motor;

[0038] Figure 6 is a schematic diagram of an air conditioning unit.

[0039] Explanation of the accompanying drawings: 1. DC motor; 2. end cover; 3. connecting assembly; 4. rectifier; 5. unit; 6. frame; 7. fan blade; 8. heat dissipation pipe; 9. first connecting seat; 10. second connecting seat; 11. connecting threaded member; 12. sealing ring; 13. mounting assembly; 14. first mounting seat; 15. shock absorbing cylinder; 16. mounting bolt; 17. mounting nut; 18. protective layer; 19. card interface; 20. clamping sleeve; 21. third connecting seat; 22. fourth connecting seat; 23. plug-in slot; 24. mounting cylinder; 25. plug-in rod; 26. elastic member; 27. plug-in hole; 28. circular plate; 29. ​​connecting piece. DETAILED DESCRIPTION

[0040] The following is combined with Figures 1 to 6 This application is described in further detail.

[0041] Embodiment 1: This embodiment of the present application discloses an EC motor. Figure 1 and Figure 2 The EC motor includes a DC motor 1, an end cover 2, a connecting component 3 and a rectifier 4. The DC motor 1 is installed on a frame 6 of a unit 5. The end cover 2 is installed at the rear end of the DC motor 1. A fan blade 7 is installed at the output end of the DC motor 1. The connecting component 3 is installed between the end cover 2 and the outer shell of the DC motor 1. The rectifier 4 is installed inside the end cover 2. The rectifier 4 is electrically connected to the inside of the DC motor 1, and the rectifier 4 can convert the external input AC power into DC power and transmit the DC power to the DC motor 1.

[0042] After the rectifier 4 is connected to the external AC power source, the rectifier 4 converts the AC power into DC power and transmits the DC power to the DC motor 1. Since the DC motor 1 has higher efficiency than the AC motor, under the same power, the speed at which the DC motor 1 drives the fan blades 7 to rotate is greater than the speed at which the AC motor drives the fan blades 7 to rotate, so that the heat dissipated by the DC motor 1 is less, so only one row of heat dissipation pipes 8 need to be arranged inside the unit 5, thereby achieving the purpose of reducing costs and increasing efficiency.

[0043] Preferably, the connection assembly 3 includes a first connection seat 9, a second connection seat 10 and a connection threaded member 11, the first connection seat 9 is fixedly connected to the outside of the end cover 2, the second connection seat 10 is fixedly connected to the housing of the DC motor 1, the first connection seat 9 and the second connection seat 10 are both provided in two, the first connection seat 9 is provided with a first threaded hole, the second connection seat 10 is provided with a second threaded hole, and the connection threaded member 11 is threadedly connected to the first threaded hole and the second threaded hole respectively. In this embodiment, the connection threaded member 11 is a countersunk screw.

[0044] By passing the connecting threaded member 11 through the first threaded hole of the first connecting seat 9 and the second threaded hole of the second connecting seat 10, the first connecting seat 9 and the second connecting seat 10 can be connected to achieve a detachable fixed installation between the end cover 2 and the DC motor 1, which is convenient for disassembly and assembly of the end cover 2 and maintenance of the rectifier 4.

[0045] Furthermore, a sealing ring 12 is fixed to one end of the end cover 2 close to the DC motor 1, the sealing ring 12 and the end cover 2 are bonded by glue, and the side of the sealing ring 12 away from the end cover 2 is tightly pressed against the rear end of the DC motor 1. In this embodiment, the sealing ring 12 is made of rubber material.

[0046] After the end cover 2 is installed on the rear end of the DC motor 1 , one side of the sealing ring 12 is tightly pressed against the rear end of the DC motor 1 , thereby improving the sealing performance between the end cover 2 and the DC motor 1 .

[0047] Reference Figure 1 and Figure 3 Preferably, a mounting assembly 13 is installed between the DC motor 1 and the frame 6, and the DC motor 1 and the frame 6 are connected through the mounting assembly 13. The mounting assembly 13 includes a first mounting seat 14, a shock-absorbing cylinder 15, a mounting bolt 16 and a mounting nut 17. The first mounting seat 14 is fixedly connected to the housing of the DC motor 1. Four first mounting seats 14 are provided, and the four first mounting seats 14 are arranged along the circumferential direction of the housing of the DC motor 1. The shock-absorbing cylinder 15 is installed on the first mounting seat 14. The shock-absorbing cylinder 15 is hollow. The mounting bolt 16 passes through the shock-absorbing cylinder 15 and the frame 6 of the unit 5, and the mounting nut 17 is threadedly connected to the mounting bolt 16. In this embodiment, the shock-absorbing cylinder 15 is made of rubber material.

[0048] First, place the DC motor 1 at the corresponding position on the frame 6, then pass the mounting bolt 16 through the shock-absorbing cylinder 15 and the frame 6 of the unit 5, thread the mounting nut 17 with the mounting bolt 16, and tighten the mounting nut 17 to achieve the installation of the DC motor 1. In this way, the DC motor 1 and the frame 6 can be detachably fixedly installed, and the setting of the shock-absorbing cylinder 15 can also play a certain role in damping the DC motor 1.

[0049] Reference Figure 3 and Figure 4 Furthermore, a protective layer 18 is fixed to the inner side of the shock absorbing cylinder 15. In the present embodiment, the protective layer 18 can be made of a material with good wear resistance such as steel, stainless steel, chrome alloy steel, copper alloy, etc.

[0050] Since the mounting bolts 16 need to pass through the inner side of the shock absorbing tube 15 , it is easy to cause damage to the shock absorbing tube 15 . The protective layer 18 made of a material with good wear resistance can protect the shock absorbing tube 15 and increase the service life of the shock absorbing tube 15 .

[0051] Reference Figure 3 Preferably, a card interface 19 is provided on the first mounting seat 14, and the card interface 19 is used to card the shock-absorbing cylinder 15 to the first mounting seat 14. Two clamping sleeves 20 are integrally fixed to the outer side of the shock-absorbing cylinder 15, and the two clamping sleeves 20 are respectively fitted with two ends of the first mounting seat 14. In this embodiment, the clamping sleeves 20 are also made of rubber material.

[0052] After the DC motor 1 is removed, since the card interface 19 is provided and the shock absorber cylinder 15 itself has a certain elasticity, the shock absorber cylinder 15 can be removed from the card interface 19, which is convenient for the disassembly and maintenance of the shock absorber cylinder 15. In addition, after the shock absorber cylinder 15 is inserted into the card interface 19, the two clamping sleeves 20 can respectively fit with the two ends of the first mounting seat 14, so that the shock absorber cylinder 15 is not easily detached from the card interface 19.

[0053] The implementation principle of an EC motor in an embodiment of the present application is as follows: after the rectifier 4 is connected to an external AC power source, the rectifier 4 converts the AC power into DC power and transmits the DC power to the DC motor 1. Since the DC motor 1 has a higher efficiency than the AC motor, under the same power, the speed at which the DC motor 1 drives the fan blades 7 to rotate is greater than the speed at which the AC motor drives the fan blades 7 to rotate, so that the heat dissipated by the DC motor 1 is less, and only one row of heat dissipation pipes 8 need to be arranged inside the unit 5, thereby achieving the purpose of reducing costs and increasing efficiency.

[0054] Example 2: Reference Figure 5The difference between this embodiment and the embodiment 1 is that the connection assembly 3 includes a third connection seat 21, a fourth connection seat 22, a plug-in slot 23, a mounting tube 24, a plug-in rod 25 and an elastic member 26. The third connection seat 21 is fixedly connected to the end cover 2, the fourth connection seat 22 is fixedly connected to the housing of the DC motor 1, the size of the fourth connection seat 22 is larger than the size of the third connection seat 21, the plug-in slot 23 is opened at one end of the fourth connection seat 22 close to the third connection seat 21, and the plug-in slot 23 is plugged with the third connection seat 21, and the mounting tube 24 is fixedly connected to the fourth connection seat 2 2, the installation cylinder 24 is hollow, the interior of the installation cylinder 24 is connected to the plug-in slot 23, the plug-in rod 25 is slidably connected in the installation cylinder 24, the two ends of the plug-in rod 25 extend out of the two ends of the installation cylinder 24 respectively, the plug-in rod 25 passes through the fourth connection seat 22, and the plug-in rod 25 is plugged and matched with the third connection seat 21, and the third connection seat 21 is provided with a plug-in hole 27 plugged and matched with the plug-in rod 25, a circular plate 28 is fixed on the outside of the plug-in rod 25, the circular plate 28 is slidably connected in the installation cylinder 24, and the elastic member 26 is fixedly connected between the circular plate 28 and the inner wall of the installation cylinder 24. In this embodiment, the elastic member 26 is a spring.

[0055] When installing the end cover 2, place the end cover 2 at the corresponding position of the rear end of the DC motor 1, then insert the third connection seat 21 into the plug slot 23 of the fourth connection seat 22, pull the plug rod 25 outward, so that the plug rod 25 is completely extended out of the plug slot 23, at this time, the elastic member 26 is in a compressed state, when the plug rod 25 is aligned with the plug hole 27, release the plug rod 25, so that the elastic member 26 pushes the plug rod 25 into the plug hole 27, thereby realizing the rapid installation of the end cover 2. Similarly, the end cover 2 can be quickly disassembled.

[0056] It should be noted that, since an elastic sealing ring 12 is provided between the DC motor 1 and the end cover 2, when the plug rod 25 is aligned with the plug hole 27 and the plug rod 25 is inserted into the plug hole 27, the sealing ring 12 has been compressed to a certain extent, so that the sealing ring 12 can apply a thrust to the end cover 2 and the DC motor 1 away from each other, and this thrust can increase the friction between the plug rod 25 and the plug hole 27 to reduce the phenomenon of the plug rod 25 being separated from the plug hole 27 when the DC motor 1 vibrates. In addition, since a damping is provided between the circular plate 28 and the mounting cylinder 24, the phenomenon of the plug rod 25 being separated from the plug hole 27 when the DC motor 1 vibrates can be further reduced.

[0057] Reference Figure 6 The present application also discloses an air conditioning unit, including the above-mentioned EC motor and unit 5, wherein a frame 6 is installed inside the unit 5, and the frame 6 is used to install the DC motor 1. Four connecting plates 29 are fixed on the frame 6, and connecting holes are opened on the connecting plates 29 for the installation bolts 16 to pass through.

[0058] When installing the DC motor 1, first place the DC motor 1 at the corresponding position on the frame 6, align the shock absorber tube 15 with the connecting piece 29, then pass the mounting bolt 16 through the shock absorber tube 15 and the connecting piece 29, thread the mounting nut 17 with the mounting bolt 16, and tighten the mounting nut 17 to achieve the installation of the DC motor 1.

[0059] Preferably, a row of heat dissipation pipes 8 is installed inside the unit 5, and the heat dissipation pipes 8 are located at the rear side of the DC motor 1. Since the DC motor 1 has a higher efficiency than the AC motor, under the same power, the speed at which the DC motor 1 drives the fan blades 7 to rotate is greater than the speed at which the AC motor drives the fan blades 7 to rotate, so that the heat dissipated by the DC motor 1 is less, and thus only one row of heat dissipation pipes 8 need to be arranged inside the unit 5.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An EC motor, characterized in that: include: A DC motor (1) is arranged on a frame (6) of a machine unit (5); An end cover (2) is arranged on the DC motor (1); A connecting assembly (3) for mounting the end cover (2) on the DC motor (1); The rectifier (4) is arranged in the end cover (2), the rectifier (4) is electrically connected to the inside of the DC motor (1), and the rectifier (4) converts externally input AC power into DC power and transmits the DC power to the DC motor (1).

2. An EC motor according to claim 1, characterized in that: The connection assembly (3) comprises a first connection seat (9) arranged on the end cover (2), a second connection seat (10) arranged on the housing of the DC motor (1), and a connection threaded member (11) threadedly connected between the first connection seat (9) and the second connection seat (10).

3. An EC motor according to claim 1, characterized in that: The connection assembly (3) comprises a third connection seat (21) arranged on the end cover (2), a fourth connection seat (22) arranged on the housing of the DC motor (1), a plug-in slot (23) opened on the fourth connection seat (22) and plug-fitted with the third connection seat (21), a mounting tube (24) arranged on the fourth connection seat (22), a plug-in rod (25) slidably arranged in the mounting tube (24) and plug-fitted with the third connection seat (21), and an elastic member (26) arranged between the plug-in rod (25) and the mounting tube (24), wherein the plug-in rod (25) passes through the third connection seat (21).

4. An EC motor according to claim 1, characterized in that: A mounting assembly (13) is arranged between the DC motor (1) and the frame (6), the mounting assembly (13) comprising a first mounting seat (14) arranged on the housing of the DC motor (1), a shock-absorbing cylinder (15) arranged on the first mounting seat (14), a mounting bolt (16) and a mounting nut (17) for connecting the shock-absorbing cylinder (15) and the frame (6) of the machine set (5), the mounting bolt (16) passing through the shock-absorbing cylinder (15), and the mounting bolt (16) and the mounting nut (17) being threadedly connected.

5. An EC motor according to claim 4, characterized in that: The first mounting seat (14) is provided with a clamping interface (19) for clamping the shock-absorbing cylinder (15), and the outer side of the shock-absorbing cylinder (15) is provided with two clamping sleeves (20) respectively fitted with two ends of the first mounting seat (14).

6. An EC motor according to claim 4, characterized in that: A protective layer (18) is provided inside the shock-absorbing cylinder (15).

7. An EC motor according to claim 1, characterized in that: A sealing ring (12) is provided at one end of the end cover (2) close to the DC motor (1).

8. An air conditioning unit comprising an EC motor as claimed in any one of claims 1 to 7, characterized in that: It also comprises a machine unit (5), wherein a row of heat dissipation pipes (8) is arranged inside the machine unit (5) and at the rear side of the DC motor (1).

9. The air conditioning unit according to claim 8, characterized in that: A frame (6) for mounting the DC motor (1) is arranged inside the machine unit (5), a plurality of connecting plates (29) are arranged on the frame (6), and connecting holes for mounting bolts (16) to pass through are opened on the connecting plates (29).

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