Motor with winding temperature detection structure

Abstract

The utility model discloses a motor with a winding temperature detection structure, which comprises an outer shell, a stator structure and a rotor structure are arranged in the outer shell, the stator structure comprises a stator iron core, a stator winding is arranged on the stator iron core, slot wedges are further arranged on the stator iron core, a groove is formed in one end face, close to the stator winding, of one end of one slot wedge, and the other end face of the other slot wedge is provided with a coil. The groove accommodates a temperature measuring probe used for temperature detection, the lower end face of the groove is provided with a second groove, a baffle is inserted in the second groove in a sliding mode, the upper end face of the baffle is provided with a notch for an electric wire connected with the temperature measuring probe to penetrate through, and the electric wire is connected with a junction box arranged on the outer side of the outer shell. According to the utility model, the detection probe is additionally arranged at the motor winding to stably detect the winding, so that the work of the motor is adjusted according to the temperature to protect the motor; the detection probe is in direct contact with the winding, so that the detection accuracy is ensured; and during insulation paint dipping, due to the limiting of the baffle plate, the detection probe is kept in contact with the winding, so that the subsequent detection accuracy is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor with a winding temperature detection structure. Background Art

[0002] In order to protect the operation of the motor and its service life, temperature monitoring of the internal winding of the motor is one of the common methods. The existing invention patent application with application number 201710378061.5 discloses a hybrid motor stator winding temperature measurement structure, which detects the temperature of the motor winding resistance through a spring-mounted temperature probe. However, during the production process of the motor winding, the winding needs to be insulated, generally by varnishing, and the probe detection of the winding after varnishing is also a post-heat transfer detection, which has the problem of inaccurate detection, thereby affecting the protection action of the motor or affecting the working efficiency of the motor. Utility Model Content

[0003] The purpose of the utility model is to provide a motor structure that can detect the winding temperature and ensure accurate detection in view of the deficiencies in the above-mentioned background technology.

[0004] To achieve the above purpose, the utility model provides a motor with a winding temperature detection structure, which adopts the following technical solutions:

[0005] A motor with a winding temperature detection structure comprises an outer shell, wherein a stator structure and a rotor structure are arranged in the outer shell, wherein the stator structure comprises a stator core, wherein a stator winding is arranged on the stator core, and a slot wedge is also arranged on the stator core, wherein the slot wedge is used to separate the stator core and the stator winding, wherein the slot wedge comprises a plurality of slot wedges, wherein a slot wedge has a groove formed on an end surface close to the stator winding at one end thereof, wherein the groove accommodates a temperature measuring probe for temperature detection, wherein a second groove is formed on the lower end surface of the groove, wherein a baffle is slidably inserted in the second groove, wherein a notch is formed on the upper end surface of the baffle for a wire connected to the temperature measuring probe to pass through, and the wire is connected to a junction box arranged on the outer side of the outer shell.

[0006] A further improvement of the motor with a winding temperature detection structure of the utility model is that a knot is arranged on the electric wire, the knot is close to the temperature measuring probe, and the knot is larger than the notch.

[0007] The further improvement of the motor with a winding temperature detection structure of the utility model is that the stator winding, slot wedges and electric wires are treated with varnish dipping insulation.

[0008] A further improvement of the motor with a winding temperature detection structure of the utility model is that the distance between the groove bottom of the groove and the motor winding is designed to be gradually reduced from the end of the groove wedge to the inside.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model adds a detection probe to the motor winding to detect the stability of the winding, and then adjusts the operation of the motor according to the temperature to protect the motor; the detection probe is in direct contact with the winding, which ensures the accuracy of the detection; during the insulation varnishing, the detection probe maintains contact with the winding due to the limitation of the baffle, thereby ensuring the accuracy of subsequent detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the stator structure in the outer shell of the utility model;

[0012] Figure 2 It is a partial cross-sectional structural schematic diagram of the stator core, stator winding and slot wedge of the utility model;

[0013] In the figure: 1 stator core, 2 stator winding, 3 slot wedge, 4 groove, 5 baffle, 6 notch, 7 wire. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] like Figure 1 and Figure 2 As shown, a motor with a winding temperature detection structure includes an outer shell, a stator structure and a rotor structure are arranged in the inner shell, the stator structure includes a stator core 1, a stator winding 2 is arranged on the stator core, and a slot wedge 3 is also arranged on the stator core. The slot wedge is used to separate the stator core and the stator winding. The slot wedge includes several slot wedges. The above structure is a conventional structure of the motor. Further improvement is that a groove 4 is opened on one end face of one slot wedge close to the stator winding, and the groove accommodates a temperature probe for temperature detection. A second groove is provided on the lower end face of the groove, and a baffle 5 is slidably inserted in the second groove, and the baffle also blocks the groove. A notch 6 is provided on the upper end face of the baffle for the wire 7 connected to the temperature probe to pass through, and the wire is connected to a junction box arranged outside the outer shell.

[0016] The wire is knotted, the knot is close to the temperature probe, and the knot is larger than the notch. The stator winding, slot wedge, and wire are treated with varnish for insulation. The distance between the bottom of the groove and the motor winding is designed to gradually decrease from the end of the slot wedge to the inside. The baffle is designed to limit the temperature probe to prevent the temperature probe from deviating from the winding during the subsequent insulation varnishing action, resulting in inaccurate detection.

[0017] The working principle of the utility model is as follows: a temperature measuring probe is placed in the groove. At this time, since the groove wedge is in contact with the winding, the temperature measuring probe also contacts the winding. Then a baffle is installed to limit the temperature measuring probe. Then the stator is potted and insulated as a whole. Due to the existence of the baffle, the contact between the temperature measuring probe and the winding is stable. The wires exposed after potting are directly connected to the junction box on the outer shell.

[0018] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A motor with a winding temperature detection structure, comprising an outer shell, wherein a stator structure and a rotor structure are arranged in the outer shell, characterized in that: The stator structure includes a stator core, a stator winding is arranged on the stator core, and a slot wedge is also arranged on the stator core. The slot wedge is used to separate the stator core and the stator winding. The slot wedge includes a plurality of slot wedges, one end of which is close to the end surface of the stator winding and has a groove. The groove accommodates a temperature probe for temperature detection. The lower end surface of the groove is provided with a second groove. A baffle is slidably inserted in the second groove. The upper end surface of the baffle is provided with a notch for the wires connected to the temperature probe to pass through. The wires are connected to a junction box arranged outside the outer shell.

2. The motor with a winding temperature detection structure according to claim 1, characterized in that: The electric wire is provided with a knot, the knot is close to the temperature measuring probe, and the knot is larger than the notch.

3. The motor with a winding temperature detection structure according to claim 2, characterized in that: The stator winding, slot wedges and wires are treated with varnish-dip insulation.

4. The motor with a winding temperature detection structure according to claim 3, characterized in that: The distance between the bottom of the groove and the motor winding is designed to gradually decrease from the end of the groove wedge to the inside.

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