Water pump and motor anti-burning system

Abstract

The utility model discloses a water pump and motor anti-burning system which comprises a temperature control inductive switch, a two-phase water pump or motor and a three-phase water pump or motor. Temperature control inductive switches are arranged in the two-phase water pump or motor and the three-phase water pump or motor; when the two-phase water pump or motor and the three-phase water pump or motor normally work, the temperature control induction switch is closed; the temperature sensing switches are additionally arranged inside the water pump and the motor, the alternating current contactor is additionally arranged outside the water pump and the motor, and the on-off of the alternating current contactor coil is controlled through the on-off of the temperature control switch, so that the operation and the stop of the water pump and the motor are automatically realized, the protection when the temperature of equipment is too high is achieved, the service life of the water pump and the motor is prolonged, and the troubleshooting rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of motor equipment, in particular to a water pump and a motor burn-proof system. Background Art

[0002] Water pumps and motors are commonly used equipment in daily production and play an indispensable role in building construction, municipal administration, water conservancy, machinery and other industries.

[0003] The Chinese patent document with the existing announcement number CN219107186U discloses a motor housing, a motor, a water pump and an electrical appliance. The motor housing provided by the first purpose of the utility model includes an outer peripheral wall, an inner peripheral wall and an axial end, the inner peripheral wall is located at the inner periphery of the outer peripheral wall, the inner periphery of the inner peripheral wall forms a rotor position, and a stator position is formed between the inner peripheral wall and the outer peripheral wall; along the axial direction of the motor housing, the rotor position includes a relatively arranged rotor installation inlet and an output shaft outlet; along the axial direction, a stator installation inlet is arranged at one end of the stator position, and the other end of the stator position is sealed and blocked by the axial end; in the axial direction, the stator installation inlet and the rotor installation inlet are arranged at the same first end, and the axial end and the output shaft outlet are arranged at the same second end; a part of the axial end surrounds the output shaft outlet and blocks the rotor position from the axial direction. The water pump includes the above-mentioned motor. The electrical appliance includes the above-mentioned water pump. The utility model reduces parts and improves assembly efficiency under the premise of meeting assembly requirements and waterproof requirements.

[0004] However, in the above scheme and the prior art, the common water pumps and motor windings all work in fully enclosed or nearly fully enclosed casings. Long-term operation under no-load, overload, or blocked conditions will cause the outer insulation layer of the winding coil to melt or burn due to excessive temperature, affecting the production and construction progress.

[0005] Therefore, the utility model proposes a water pump and motor burn-proof system for solving the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a water pump and motor burn-out prevention system to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water pump and motor burn prevention system includes a temperature control sensing switch, a two-phase water pump or motor, or a three-phase water pump or motor; a temperature control sensing switch is arranged in the two-phase water pump or motor or the three-phase water pump or motor; the temperature control sensing switch is closed when the two-phase water pump or motor or the three-phase water pump or motor works normally.

[0008] Preferably, the temperature control induction switch is connected in series with a starting capacitor in a two-phase water pump or a motor, and the temperature control module is attached to the water pump or motor coil and fixed.

[0009] Preferably, the three main wires in the three-phase water pump or motor are externally connected to the three-phase working power U1, U2, and U3, and are internally connected to the three-phase winding wire ends of the water pump or motor. The neutral wire at one end of the two auxiliary wires in the three-phase water pump or motor is connected to one end of the temperature control sensing switch. The temperature control module is attached to the water pump or motor coil and fixed, and the other end of the wire is connected to the wiring terminal of the AC contactor. U1 is connected to the wiring terminal of the AC contactor.

[0010] Preferably, the two-phase water pump or motor is provided with a main winding and a secondary winding.

[0011] Preferably, a first thermal fuse and a second thermal fuse are connected to the three-phase water pump or motor circuit.

[0012] Preferably, a knife switch is provided in the three-phase water pump or the motor, and a push button switch is added to the circuit of the three-phase water pump or the motor.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By installing a temperature sensing switch inside the water pump and motor and an AC contactor outside, the on and off of the AC contactor coil is controlled by the opening and closing of the temperature control switch, thereby automatically realizing the operation and stop of the water pump and motor, so as to achieve protection when the temperature of the equipment is too high, and improve the service life of the water pump and motor and the fault detection rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the working principle diagram of the two-phase water pump and motor of the utility model;

[0016] Figure 2 This is the working principle diagram of the three-phase water pump and motor of the utility model.

[0017] In the figure: temperature control induction switch 1, starting capacitor 2, three-phase water pump or motor 3, AC contactor 4, first thermal fuse 5, second thermal fuse 6, knife switch 7, push button switch 8, main winding 9, auxiliary winding 10. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model are described clearly and completely below. The embodiments of the utility model and all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 2 The present invention provides the following three preferred embodiments:

[0020] Embodiment 1

[0021] A water pump and motor burn prevention system comprises a temperature control induction switch 1, a two-phase water pump or motor, and a three-phase water pump or motor 3; the two-phase water pump or motor, and the three-phase water pump or motor 3 are provided with the temperature control induction switch 1; the temperature control induction switch 1 is closed when the two-phase water pump or motor, and the three-phase water pump or motor 3 are working normally; the temperature control induction switch 1 is connected in series with a starting capacitor 2 in the two-phase water pump or motor, and the temperature control module is attached to the water pump or motor coil and fixed; the two-phase water pump or motor is provided with a main winding 9 and a secondary winding 10.

[0022] During use, when the two-phase water pump or motor works normally, the temperature control induction switch 1 is closed; when the two-phase water pump or motor pump encounters blockage, idling, etc., the coil temperature rises, and when it reaches the critical working temperature of the water pump, the temperature control induction switch 1 is automatically disconnected and the water pump stops working.

[0023] Embodiment 2, based on embodiment 1:

[0024] The three main lines in the three-phase water pump or motor 3 are externally connected to the three-phase working power U1, U2, and U3, and are internally connected to the three-phase winding line ends of the water pump or motor. The neutral line at one end of the two auxiliary lines in the three-phase water pump or motor 3 is connected to one end of the temperature control sensing switch 1. The temperature control module is attached to the water pump or motor coil and fixed, and the other end is connected to the wiring terminal of the AC contactor 4. U1 is connected to the wiring terminal of the AC contactor 4; the first thermal fuse 5 and the second thermal fuse 6 are connected to the circuit of the three-phase water pump or motor 3; a knife switch 7 is provided in the three-phase water pump or motor 3, and a button switch 8 is added to the circuit of the three-phase water pump or motor 3.

[0025] During use, when the three-phase water pump or motor 3 is working normally, the temperature control sensing switch 1 is closed, the coil of the AC contactor 4 is energized, the main contacts are in the attracted state, and the knife switch 7 closes the circuit to connect the water pump for normal operation; when the three-phase water pump or motor 3 encounters blockage, idling, etc., the coil temperature rises, and when the critical temperature of the coil is reached, the temperature control sensing switch 1 is automatically disconnected, the coil of the AC contactor 4 is de-energized, the AC contactor 4 loses power and is disconnected, and the water pump stops working; when the temperature control sensing switch 1 is disconnected after heating up, it will not automatically resume power after cooling down. After troubleshooting, it is necessary to press the button switch 8 again to resume starting.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water pump and motor burn-out prevention system, characterized in that: The invention comprises a temperature control induction switch (1), a two-phase water pump or motor, or a three-phase water pump or motor (3); the temperature control induction switch (1) is arranged in the two-phase water pump or motor, or the three-phase water pump or motor (3); the temperature control induction switch (1) is closed when the two-phase water pump or motor, or the three-phase water pump or motor (3) works normally.

2. A water pump and motor burn-out prevention system according to claim 1, characterized in that: The temperature control induction switch (1) is connected in series with a starting capacitor (2) in a two-phase water pump or a motor, and the temperature control module is attached to the water pump or motor coil and fixed.

3. A water pump and motor burn-out prevention system according to claim 1, characterized in that: The three main wires in the three-phase water pump or motor (3) are externally connected to the three-phase working power U1, U2, and U3, and are internally connected to the three-phase winding line ends of the water pump or motor. The neutral wire at one end of the two auxiliary wires in the three-phase water pump or motor (3) is introduced into one end of the temperature control induction switch (1). The temperature control module is attached to the water pump or motor coil and fixed. The other end of the wire is connected to the connection terminal of the AC contactor (4). U1 is connected to the connection terminal of the AC contactor (4).

4. A water pump and motor burn-out prevention system according to claim 2, characterized in that: The two-phase water pump or motor is provided with a main winding (9) and a secondary winding (10).

5. A water pump and motor burn-out prevention system according to claim 3, characterized in that: A first thermal fuse (5) and a second thermal fuse (6) are connected in the circuit of the three-phase water pump or motor (3).

6. A water pump and motor burn-out prevention system according to claim 3, characterized in that: The three-phase water pump or motor (3) is provided with a knife switch (7), and a push button switch (8) is additionally installed in the circuit of the three-phase water pump or motor (3).

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