Motor, speed regulation system and air conditioner

Abstract

The utility model relates to the technical field of motors, in particular to a motor, a speed regulation system and an air conditioner. The utility model aims to solve the problem that the motor may be burnt out under the condition of wrong wiring of the gear leading-out wire of the motor. Therefore, the motor comprises a capacitor, a main winding, a secondary winding, a speed regulation winding, at least one gear tap, a gear outgoing line and an overheat protector, the capacitor, the main winding and the secondary winding are sequentially connected end to end to form a closed loop; the speed regulating winding is connected in series between the main winding and the secondary winding, or the first end of the speed regulating winding is connected between the main winding and the secondary winding; one end of the gear leading-out wire is connected with a common end between any two windings in the main winding, the secondary winding or the speed regulation winding, the other end of the gear leading-out wire is connected with the gear taps, and an overheat protector is arranged between at least one gear tap and the winding correspondingly connected with the gear tap. According to the invention, the motor can be prevented from being burnt out under the condition of wrong wiring of the gear leading-out wire of the motor.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a motor, a speed regulation system and an air conditioner. Background Art

[0002] Fan coil units are a common type of air conditioning terminal equipment. Their motors typically use tap-type speed control. This control modifies the distribution of resistance within the motor by changing the motor's wiring. These typically include L-type and T-type wiring. The motor is a key component of the speed control system, and a burnout can affect both system operation and user experience, necessitating overheat protection.

[0003] In the related art, an overheat protector is provided on the neutral line of the L-type connection method, or an overheat protector is provided before the speed regulating winding of the T-type connection method to protect the motor from overheating.

[0004] However, during the installation of the speed control system, the gear lead wires may be miswired. The related technology can only prevent the motor from burning out when the wiring is correct. If the motor gear lead wires are miswired, the motor may still burn out.

[0005] Accordingly, this field requires a new technical solution to solve the above problems. Utility Model Content

[0006] In order to solve at least one of the above problems in the prior art, that is, to solve the problem that the motor may be burned out when the motor gear lead wires are connected incorrectly.

[0007] In the first aspect, the present application provides a motor, which includes a capacitor, a main winding, a secondary winding, a speed control winding, at least one gear tap, a gear lead-out line and an overheating protector; the capacitor, the main winding and the secondary winding are connected end to end in sequence to form a closed loop; the speed control winding is connected in series between the main winding and the secondary winding, or the first end of the speed control winding is connected between the main winding and the secondary winding; one end of the gear lead-out line is connected to the common end between the main winding, the secondary winding or any two windings of the speed control winding, and the other end is connected to the gear tap, and an overheating protector is provided between at least one gear tap and the winding connected thereto.

[0008] In some embodiments, the overheat protector is embedded in the main winding and / or the speed regulating winding.

[0009] In some embodiments, the overheat protector is arranged on the gear lead wire.

[0010] In some embodiments, the speed regulating winding is connected in series between the main winding and the secondary winding; the speed regulating windings are respectively the first speed regulating winding and the second speed regulating winding, and the first speed regulating winding is connected to the main winding; the gear lead-out lines are respectively the high gear lead-out line, the middle gear lead-out line and the low gear lead-out line, and the gear taps include the high gear tap, the middle gear tap and the low gear tap; wherein, the high gear lead-out line connects the common end and the high gear tap of the first speed regulating winding and the main winding, the middle gear lead-out line connects the common end and the middle gear tap of the first speed regulating winding and the second speed regulating winding, and the low gear lead-out line connects the common end and the low gear tap of the second speed regulating winding and the secondary winding.

[0011] In some embodiments, the first end of the speed control winding is connected between the main winding and the secondary winding; the speed control windings are respectively a first speed control winding and a second speed control winding connected in series, and the first speed control winding is connected to the connecting line between the main winding and the secondary winding; the gear lead-out lines are respectively a high gear lead-out line, a middle gear lead-out line and a low gear lead-out line, and the gear taps include a high gear tap, a middle gear tap and a low gear tap; wherein, the high gear lead-out line connects the common end and the high gear tap of the first speed control winding and the main winding, the middle gear lead-out line connects the common end and the middle gear tap of the first speed control winding and the second speed control winding, and the low gear lead-out line connects the free end of the second speed control winding and the low gear tap.

[0012] In some embodiments, the motor further includes a neutral wire, which is provided on a connecting line between the capacitor and the main winding.

[0013] In some embodiments, the operating temperature of the overheat protector is determined according to the insulation level of the motor.

[0014] In a second aspect, the present application provides a speed regulation system, which includes a controller and the above-mentioned motor; the controller includes multiple gear interfaces; the gear taps of the motor are connected to the corresponding gear interfaces.

[0015] In some embodiments, the speed control system further includes a terminal block, which includes a plurality of one-to-one corresponding first terminal interfaces and second terminal interfaces; the gear taps of the motor are respectively connected to the first terminal interfaces, and the gear interfaces are respectively connected to the second terminal interfaces.

[0016] In a third aspect, the present application provides an air conditioner, which includes the above-mentioned speed regulation system.

[0017] On the premise of adopting the above technical solution, the motor, speed control system and air conditioner provided by this application can prevent the motor from burning out when the motor gear lead wires are connected incorrectly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The motor, speed control system and air conditioner of the present application are described below with reference to the accompanying drawings.

[0019] Figure 1 This is the wiring diagram of the L-type wiring method in this application;

[0020] Figure 2 This is a wiring diagram of the T-type wiring method in this application;

[0021] Figure 3 Proper wiring schematic for wiring the motor;

[0022] Figure 4 This is the wiring diagram for the reverse connection of the high-speed lead wire and the neutral wire;

[0023] Figure 5 This is a schematic diagram of the current flow when the motor is running in the middle gear when the high gear lead wire and the neutral wire are connected reversely;

[0024] Figure 6 This is a schematic diagram of the current flow when the motor is running in low gear when the high gear lead wire and the neutral wire are connected reversely;

[0025] Figure 7 This is a wiring diagram of the T-type wiring method in this application.

[0026] Reference Signs List

[0027] 101. Capacitor; 102. Main winding; 103. Auxiliary winding; 104. Speed ​​control winding; 105. Gear lead wire; 106. Neutral wire; 107. Overheat protector; 201. Low gear lead wire; 202. Mid-gear lead wire; 203. High-gear lead wire; 301. Neutral wire interface; 302. Low gear interface; 303. Mid-gear interface; 304. High-gear interface; 401. First speed control winding; 402. Second speed control winding; 501. First overheat protector; 502. Second overheat protector; 503. Third overheat protector. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. For example, although the following embodiments of the present application are described in conjunction with a compressor, this is not intended to limit the scope of protection of the present application. Without departing from the principles of the present application, the vibration isolation device of the present application can also be applied to vibration isolation of other equipment.

[0029] It should be noted that in the description of this application, terms such as "center," "upper," "lower," "vertical," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be understood as limiting this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance.

[0030] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0031] In order to protect the motor from overheating, the related art sets an overheat protector 107 on the neutral line 106 of the L-type wiring method, or sets an overheat protector 107 before the speed regulating winding 104 of the T-type wiring method to protect the motor from overheating.

[0032] For related technologies, under the condition of correct wiring, after the speed control system has overcurrent, the winding temperature rises. When the temperature rises to the disconnection temperature of the overheating protector, the overheating protector is disconnected and the current circuit is disconnected, which will not cause the motor to burn out due to excessive temperature.

[0033] However, if the gear lead wires of the speed control system are connected incorrectly, the overheat protector in the related art will not function properly and the motor may be burned out.

[0034] The following uses the L-type wiring method as an example. The motor includes a neutral wire, a low-range lead wire, a mid-range lead wire, and a high-range lead wire. The controller includes interfaces for the neutral, low-range, mid-range, and high-range wires. L represents the live wire, and N represents the neutral wire. The high-range lead wire is connected to the controller's neutral interface, while the neutral wire is connected to the controller's high-range interface. In this case, when the controller is operating in high gear, the resistance is the same as in high gear with normal wiring, and the motor can operate normally. However, when the controller is operating in mid-range, the resistance of the speed winding between the mid-range and high-range lead wires is very low, resulting in a high current flowing through the speed winding. This causes the speed winding to heat up rapidly within a short period of time. When the temperature exceeds the maximum temperature specified by the speed winding's insulation grade, the insulation of the speed winding is damaged, and the speed winding between the mid-range and high-range lead wires burns out. Furthermore, when the controller is running in low gear, since the resistance of the speed regulating winding between the low gear lead wire and the high gear lead wire is very small, the current passing through the speed regulating winding is very large, and the temperature of the speed regulating winding rises rapidly in a short period of time. When the temperature exceeds the maximum temperature corresponding to the insulation level of the speed regulating winding, the insulation of the speed regulating winding is destroyed, and the speed regulating winding between the low gear lead wire and the high gear lead wire is burned.

[0035] In order to solve the problem that the motor may be burned out when the motor gear lead wires are connected incorrectly, the present application provides a motor, a speed control system and an air conditioner.

[0036] In a first aspect, the present application provides a motor.

[0037] Combine Figure 1 and Figure 2 As shown, the motor provided in this application includes a capacitor 101, a main winding 102, a secondary winding 103, a speed regulating winding 104, at least one gear tap, a gear lead wire 105 and an overheat protector 107.

[0038] Capacitor 101, main winding 102, and secondary winding 103 are connected end-to-end to form a closed loop. Speed ​​regulating winding 104 is connected in series between main winding 102 and secondary winding 103, or a first end of speed regulating winding 104 is connected between main winding 102 and secondary winding 103. When speed regulating winding 104 is connected in series between main winding 102 and secondary winding 103, the motor has an L-type connection method. When the first end of speed regulating winding 104 is connected between main winding 102 and secondary winding 103, the motor has a T-type connection method.

[0039] One end of the gear lead wire 105 is connected to the common end between any two windings of the main winding 102, the auxiliary winding 103 or the speed regulating winding 104, and the other end is connected to the gear tap. An overheat protector is provided between at least one gear tap and the corresponding winding connected thereto.

[0040] Under the premise of adopting the above technical solution, the motor provided by this application can avoid the motor from burning out when the motor gear lead wires are connected incorrectly.

[0041] The following uses the L-type wiring method as an example to illustrate how the motor, speed control system, and air conditioner provided by this application can avoid the motor from being burned out when the motor gear lead wire is connected incorrectly. Figure 1 、 Figure 2 and Figure 3 As shown, the motor in this application includes a neutral line 106, a low-range lead line 201, a mid-range lead line 202, and a high-range lead line 203. The controller includes a neutral line interface 301, a low-range interface 302, a mid-range interface 303, and a high-range interface 304. The motor includes a first speed control winding 401 and a second speed control winding 402. The main winding 102 is provided with a first overheating protector 501, the first speed control winding 401 is provided with a second overheating protector 502, and the second speed control winding 402 is provided with a third overheating protector 503.

[0042] (1) Combination Figure 4 As shown, the high-speed lead wire and the neutral wire are connected in reverse.

[0043] That is to say, the high-speed lead wire is connected to the neutral line interface of the controller, and the neutral line is connected to the high-speed interface of the controller.

[0044] When the controller is running in high gear, the resistance is the same as that in high gear when the wiring is normal, and the motor can operate normally.

[0045] Combine Figure 5 As shown, when the controller is running in the middle gear, the resistance of the first speed regulating winding 401 between the middle gear lead wire and the high gear lead wire is very small, and the current passing through the speed regulating winding is very large. The temperature of the first speed regulating winding 401 rises rapidly in a short period of time. When the disconnection temperature of the second overheating protector 502 is exceeded, the second overheating protector 502 is disconnected, the winding circuit is de-energized, and the temperature stops rising, thereby protecting the first speed regulating winding 401 from being burned.

[0046] Combine Figure 6As shown, when the controller is running in low gear, since the resistance of the first speed regulating winding 401 and the second speed regulating winding 402 between the low gear lead wire 201 and the high gear lead wire 203 is very small, the current passing through the first speed regulating winding 401 and the second speed regulating winding 402 is very large, and the temperature of the first speed regulating winding 401 and the second speed regulating winding 402 rises rapidly in a short period of time. When the maximum temperature of the second overheating protector 502 or the third overheating protector 503 is exceeded, the second overheating protector 502 or the third overheating protector 503 is disconnected, the winding circuit is de-energized, and the temperature stops rising, thereby protecting the first speed regulating winding 401 and the second speed regulating winding 402 from being burned.

[0047] (2) The mid-range lead wire and the neutral wire are connected in reverse.

[0048] That is to say, the mid-range lead wire is connected to the neutral line interface of the controller, and the neutral line is connected to the mid-range interface of the controller.

[0049] At this time, when the controller is running in the middle position, the resistance is the same as the resistance when the controller is running in the middle position with normal wiring, and the motor can operate normally.

[0050] When the controller is running at a high gear, the current passing through the first speed regulating winding 401 is very large, and the temperature of the first speed regulating winding 401 rises rapidly in a short period of time. When the temperature exceeds the disconnection temperature of the second overheat protector 502, the second overheat protector 502 is disconnected, the winding circuit is de-energized, and the temperature stops rising, thereby protecting the first speed regulating winding 401 from being burned.

[0051] When the controller is running at low gear, the current passing through the second speed regulating winding 402 is very large, and the temperature of the second speed regulating winding 402 rises rapidly in a short period of time. When the disconnection temperature of the third overheat protector 503 is exceeded, the third overheat protector 503 is disconnected, the winding circuit is de-energized, and the temperature stops rising, thereby protecting the second speed regulating winding 402 from being burned.

[0052] (3) The low-speed lead wire and the neutral wire are connected in reverse.

[0053] That is to say, the low-range lead-out line is connected to the neutral line interface of the controller, and the neutral line is connected to the low-range interface of the controller.

[0054] At this time, when the controller is running at low gear, the resistance is the same as the resistance when the wiring is normal and the motor can operate normally.

[0055] When the controller is running at a high gear, the current passing through the first speed regulating winding 401 and the second speed regulating winding 402 is very large, and the temperature of the first speed regulating winding 401 and the second speed regulating winding 402 rises rapidly in a short period of time. When the disconnection temperature of the second overheating protector 502 or the third overheating protector 503 is exceeded, the second overheating protector 502 or the third overheating protector 503 is disconnected, the winding circuit is de-energized, and the temperature stops rising, thereby protecting the first speed regulating winding 401 and the second speed regulating winding 402 from being burned.

[0056] When the controller is running in the middle position, the current passing through the first speed control winding 401 is very large, and the temperature of the first speed control winding 401 rises rapidly in a short period of time. When it exceeds the disconnection temperature of the second overheat protector 502, the second overheat protector 502 is disconnected, the winding circuit is de-energized, and the temperature stops rising, thereby protecting the first speed control winding 401 from being burned.

[0057] In addition, when the temperature of the main winding 102 is too high, the first overheat protector 501 is disconnected, the winding circuit is powered off, and the temperature stops rising, thereby protecting the first speed regulating winding 401 from being burned.

[0058] In summary, the motor provided in this application can prevent the motor from burning out when the motor gear lead wires are connected incorrectly.

[0059] The overheat protector includes several possible settings, specifically:

[0060] In one possible configuration, the overheat protector 107 is embedded in the main winding and / or the speed regulating winding. This configuration is beneficial for improving the accuracy of winding temperature detection.

[0061] In another possible arrangement, the overheat protector is arranged on the gear lead-out line. In this arrangement, the overheat protector can prevent the motor from burning out when the motor gear lead-out line is connected incorrectly.

[0062] In some embodiments, combined Figure 6As shown, the speed regulating winding 104 is connected in series between the main winding 102 and the secondary winding 103. In other words, the motor uses an L-shaped wiring method. The speed regulating winding 104 comprises a first speed regulating winding 401 and a second speed regulating winding 402, with the first speed regulating winding 401 connected to the main winding 102. The gear lead wires 105 comprise a high gear lead wire 203, a mid-range lead wire 202, and a low-range lead wire 201. The gear taps include a high gear tap, a mid-range tap, and a low-range tap. Among them, the high-speed lead-out line 203 connects the common end and the high-speed tap of the first speed control winding 401 and the main winding 102, the mid-speed lead-out line 202 connects the common end and the mid-speed tap of the first speed control winding 401 and the second speed control winding 402, and the low-speed lead-out line 201 connects the common end and the low-speed tap of the second speed control winding 402 and the auxiliary winding 103.

[0063] In some embodiments, combined Figure 7 As shown, the first end of the speed regulating winding 104 is connected between the main winding 102 and the secondary winding 103. In other words, the motor adopts a T-type connection method. The speed regulating winding 104 comprises a first speed regulating winding 401 and a second speed regulating winding 402 connected in series. The first speed regulating winding 401 is connected to the connecting line between the main winding 102 and the secondary winding 103. The gear lead wires 105 are respectively a high gear lead wire 203, a mid-range lead wire 202, and a low-range lead wire 201. The gear taps include a high gear tap, a mid-range tap, and a low-range tap. Among them, the high-speed lead-out line 203 is connected to the common end and the high-speed tap of the first speed control winding 401 and the main winding 102, the mid-speed lead-out line 202 is connected to the common end and the mid-speed tap of the first speed control winding 401 and the second speed control winding 402, and the low-speed lead-out line 201 is connected to the free end and the low-speed tap of the second speed control winding 402.

[0064] In some embodiments, the motor further includes a neutral wire, which is provided on the connection line between the capacitor 101 and the main winding 102. The neutral wire is used to provide a loop for current, ensuring that the current can flow safely and stably.

[0065] In some embodiments, the operating temperature of the overheat protector 107 is determined according to the insulation grade of the motor. Determining the operating temperature of the overheat protector 107 according to the insulation grade of the motor is conducive to avoiding frequent disconnection of the overheat protector 107 and improving the accuracy of overtemperature disconnection.

[0066] For example, the operating temperatures of the overheat protector 107 that can be selected for motors with Class B insulation include 100°C, 105°C, 110°C, 115°C, 120°C, 125°C, 130°C and 135°C; the specifications of the thermal protector that can be selected for motors with Class F insulation include 100°C, 105°C, 110°C, 115°C, 120°C, 125°C, 130°C, 135°C, 140°C, 145°C, 150°C, 155°C or 160°C.

[0067] In a second aspect, the present application provides a speed regulation system.

[0068] The speed regulation system provided in this application includes a controller and the aforementioned motor. The controller includes multiple gear interfaces. The gear taps of the motor are connected to corresponding gear interfaces.

[0069] The speed control system provided in this application can prevent the motor from burning out when the motor gear lead wires are connected incorrectly.

[0070] In some embodiments, the speed control system further includes a terminal block including a plurality of first and second terminal interfaces corresponding to each other. The motor's gear taps are respectively connected to the first terminal interfaces, and the gear interfaces are respectively connected to the second terminal interfaces. The terminal block facilitates connection between the motor's gear lead wire 105 and the controller's gear interface.

[0071] In some embodiments, the color of the motor's gear lead wire corresponds to the color of the first terminal interface, thereby facilitating wiring.

[0072] In a third aspect, the present application provides an air conditioner, which includes the above-mentioned speed regulation system.

[0073] It should be noted that the above preferred embodiments are only used to illustrate the principles of this application and are not intended to limit the scope of protection of this application. Without departing from the principles of this application, those skilled in the art may adjust the above settings so that this application can be applied to more specific application scenarios.

[0074] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims of this application, any of the claimed embodiments may be used in any combination.

[0075] Thus far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present application.

Claims

1. A motor, characterized in that: The motor includes a capacitor, a main winding, an auxiliary winding, a speed regulating winding, at least one gear tap, a gear lead wire and an overheat protector; The capacitor, the main winding and the secondary winding are connected end to end in sequence to form a closed loop; The speed regulating winding is connected in series between the main winding and the secondary winding, or the first end of the speed regulating winding is connected between the main winding and the secondary winding; One end of the gear lead-out line is connected to the common end between any two windings among the main winding, the auxiliary winding or the speed regulating winding, and the other end is connected to the gear tap. An overheat protector is provided between at least one of the gear taps and the winding connected thereto.

2. The motor according to claim 1, characterized in that The overheat protector is embedded in the main winding and / or the speed regulating winding.

3. The motor according to claim 1, characterized in that The overheat protector is arranged on the gear lead-out line.

4. The motor according to claim 2 or 3, characterized in that The speed regulating winding is connected in series between the main winding and the auxiliary winding; the speed regulating windings are respectively a first speed regulating winding and a second speed regulating winding, and the first speed regulating winding is connected to the main winding; the gear lead wires are respectively a high gear lead wire, a middle gear lead wire and a low gear lead wire, and the gear taps include a high gear tap, a middle gear tap and a low gear tap; Among them, the high-speed lead-out line is connected to the common end and high-speed tap of the first speed regulation winding and the main winding, the mid-speed lead-out line is connected to the common end and mid-speed tap of the first speed regulation winding and the second speed regulation winding, and the low-speed lead-out line is connected to the common end and low-speed tap of the second speed regulation winding and the auxiliary winding.

5. The motor according to claim 2 or 3, characterized in that The first end of the speed regulating winding is connected between the main winding and the auxiliary winding; the speed regulating windings are respectively a first speed regulating winding and a second speed regulating winding connected in series, and the first speed regulating winding is connected to the connecting line between the main winding and the auxiliary winding; the gear lead wires are respectively a high gear lead wire, a middle gear lead wire and a low gear lead wire, and the gear taps include a high gear tap, a middle gear tap and a low gear tap; Among them, the high-speed lead-out line is connected to the common end and the high-speed tap of the first speed regulation winding and the main winding, the mid-speed lead-out line is connected to the common end and the mid-speed tap of the first speed regulation winding and the second speed regulation winding, and the low-speed lead-out line is connected to the free end of the second speed regulation winding and the low-speed tap.

6. The motor according to any one of claims 1 to 3, characterized in that The motor further includes a neutral line, which is provided on a connection line between the capacitor and the main winding.

7. The electric motor according to any one of claims 1 to 3, characterized in that The operating temperature of the overheat protector is determined according to the insulation grade of the motor.

8. A speed control system, characterized in that: The speed control system comprises a controller and a motor according to any one of claims 1 to 7; The controller includes a plurality of gear interfaces; The gear tap of the motor is connected to the corresponding gear interface.

9. The speed control system according to claim 8, characterized in that: The speed regulation system further includes a terminal block, which includes a plurality of one-to-one corresponding first terminal interfaces and second terminal interfaces; the gear taps of the motor are respectively connected to the first terminal interfaces, and the gear interfaces are respectively connected to the second terminal interfaces.

10. An air conditioner, characterized in that: The air conditioner includes the speed regulation system according to claim 8 or 9.

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