Motor winding temperature measuring device

Abstract

The utility model provides a motor winding temperature measuring device, which comprises a temperature sensor and a mounting seat, the temperature sensor comprises a shell, a probe and a lead, the probe is of a flat structure, the lead is connected with one end of the probe, the shell is of a rectangular shell structure, and the probe is arranged in the shell and is bonded and fixed with the shell through heat-conducting glue; the mounting base comprises a C-shaped clamping groove, and a first bending piece and a second bending piece which are integrally connected to the upper surface of the C-shaped clamping groove and are arranged in the length direction of the C-shaped clamping groove, the temperature sensor is placed on the upper surface of the C-shaped clamping groove, and a shell and a wire of the temperature sensor are locked through the first bending piece and the second bending piece respectively; and the C-shaped clamping groove is clamped on the flat copper wire of the motor winding from the side surface. The temperature measuring device can effectively increase the temperature sensing area of the temperature sensor, the heat conduction efficiency between the probe of the temperature sensor and the flat copper wire of the motor winding is high, the connection is stable, and the temperature sensor can be ensured to stably and accurately monitor the temperature change.

Description

Technical Field

[0001] This utility model relates to the field of motor winding temperature measurement technology, specifically to a motor winding temperature measurement device. Background Technology

[0002] Motor winding temperature is a crucial indicator for assessing the motor's operating condition and safety. Motors generate significant heat during operation; if this heat is not dissipated promptly, it can lead to overheating and a series of malfunctions, including insulation aging and winding burnout. Therefore, monitoring and controlling motor winding temperature is essential for safe motor operation. Existing temperature sensors often have circular sensing ends, resulting in insufficient contact area with the motor windings, poor temperature sensing performance, and slow response times. This is especially true when used in flat-wire motors, where the windings have a compact internal structure and limited space. Circular temperature sensors are relatively large and difficult to install in suitable locations within the windings, further reducing the contact area and leading to inaccurate temperature measurements. Furthermore, existing temperature sensors are typically fixed to the flat-wire windings with cable ties or tape, which have poor thermal conductivity, low fixing strength, and poor reliability. In actual operation, they are prone to loosening due to vibration and heat. Summary of the Invention

[0003] This invention provides a motor winding temperature measuring device. This device can effectively increase the temperature sensing area of ​​the temperature sensor, and the heat conduction efficiency between the temperature sensor probe and the flat copper wire of the motor winding is high and the connection is stable, which can ensure that the temperature sensor can stably and accurately monitor temperature changes.

[0004] The technical solution adopted to achieve the above-mentioned objectives of this utility model is as follows:

[0005] A motor winding temperature measuring device is installed on the flat copper wire of the motor winding to measure the temperature of the motor winding. The temperature measuring device includes:

[0006] A temperature sensor includes a housing, a probe, and a wire. The probe has a flat structure, and the wire is connected to one end of the probe. The housing has a rectangular structure, and the probe is placed inside the housing and fixed to the housing by thermally conductive adhesive.

[0007] The mounting base includes a C-shaped slot and a first bending member and a second bending member integrally connected to the upper surface of the C-shaped slot and arranged along the length of the C-shaped slot. The temperature sensor is placed on the upper surface of the C-shaped slot, and the housing and wire of the temperature sensor are locked by the first bending member and the second bending member respectively, thus locking the entire temperature sensor onto the mounting base. The C-shaped slot clamps the flat copper wire of the motor winding from the side, so that the entire mounting base is fixed to the flat copper wire of the motor winding.

[0008] A vertically positioned limiting baffle is integrally connected to one end of the upper surface of the C-shaped slot near the first bending member. When the temperature sensor is placed on the mounting base, the limiting baffle contacts the end face of the temperature sensor's housing to limit the temperature sensor's position.

[0009] The first bending member includes a vertically arranged first connecting piece and a horizontally arranged first bending piece connected to the top of the first connecting piece. The first bending member and the upper surface of the C-shaped slot together form a C-shaped structure. The vertical length of the first connecting piece is consistent with the thickness of the temperature sensor housing. The horizontal length of the first bending piece is greater than the width of the temperature sensor housing. The end of the first bending piece away from the first connecting piece can be bent.

[0010] The second bending member includes a vertically arranged second connecting piece and a horizontally arranged second bending piece connected to the top of the second connecting piece. The second bending member and the upper surface of the C-shaped slot together form a C-shaped structure. The vertical length of the second connecting piece is consistent with the thickness of the wire of the temperature sensor. The horizontal length of the second bending piece is greater than the width of the wire of the temperature sensor, and the end of the second bending piece away from the second connecting piece can be bent.

[0011] There are two first bending components arranged side by side, and the two first bending components are locked together on the housing of the temperature sensor.

[0012] The outer shell is made of metal.

[0013] The mounting base is made of metal.

[0014] The C-shaped slot of the mounting base is clamped and fixed to the flat copper wire of the motor winding through an interference fit.

[0015] Compared with the prior art, the motor winding temperature measuring device provided by this utility model has the following advantages: 1. The temperature sensor probe in this utility model has a flat structure and is fixed in a rectangular housing by thermally conductive adhesive. It is then mounted on the flat copper wire of the motor winding by a mounting base, which can effectively increase the temperature sensing area of ​​the temperature sensor. Moreover, the mounting base, housing and thermally conductive adhesive are all made of materials with high thermal conductivity, ensuring efficient heat transfer between the temperature sensor probe and the flat copper wire of the motor winding, and improving the measurement accuracy.

[0016] 2. The mounting base used to fix the temperature sensor and the flat copper wire of the motor winding in this utility model is an integrated sheet metal bending design. It has a simple and reliable structure, is easy to manufacture, and has a low cost. It also reduces assembly steps and potential connection points, thereby greatly improving the stability and reliability of the overall structure and ensuring that the temperature sensor can stably and accurately monitor temperature changes during motor operation.

[0017] 3. In this utility model, the bendable structure of the first and second bending parts arranged in a distributed manner locks the housing and wires of the temperature sensor onto the mounting base, which is secure and can effectively reduce the phenomenon of wires peeling off from the probe end caused by vibration and thermal expansion. Attached Figure Description

[0018] Figure 1 Exploded view of the structure of the motor winding temperature measuring device provided by this utility model;

[0019] Figure 2 An installation diagram of the motor winding temperature measuring device provided by this utility model;

[0020] In the diagram: 1-flat copper wire of motor winding, 2-temperature sensor, 21-housing, 22-probe, 23-wire, 24-thermal conductive adhesive, 3-mounting base, 31-C-shaped slot, 32-first bending part, 33-second bending part, 34-limiting baffle. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings.

[0022] The structure of the motor winding temperature measuring device provided in this embodiment is as follows: Figure 1 and Figure 2 As shown, the temperature of the motor winding is measured by installing flat copper wire 1 on the motor winding.

[0023] In this embodiment, the temperature measuring device includes a temperature sensor 2 and a mounting base 3. The temperature sensor includes a housing 21, a probe 22, and a wire 23. The probe has a flat structure, and the wire is connected to one end of the probe. The housing has a rectangular structure, and the probe is placed inside the housing and fixed to the housing by thermally conductive adhesive 24. Specifically, after the probe is placed inside the housing, thermally conductive adhesive is injected into the housing. After the thermally conductive adhesive has completely cured, the probe and housing can be fixed together. Furthermore, the thermally conductive adhesive is silicone with high thermal conductivity, which ensures efficient heat transfer between the probe and the housing and high measurement accuracy. Preferably, the housing is made of a metal material, such as copper or aluminum, which has a high thermal conductivity.

[0024] In this embodiment, the mounting base includes a C-shaped slot 31 and a first bending member 32 and a second bending member 33 integrally connected to the upper surface of the C-shaped slot and arranged along the length of the C-shaped slot. The temperature sensor is placed on the upper surface of the C-shaped slot, and the housing and wire of the temperature sensor are locked by the first bending member and the second bending member, respectively, thus locking the entire temperature sensor onto the mounting base. The C-shaped slot clamps the flat copper wire of the motor winding from the side, fixing the entire mounting base to the flat copper wire of the motor winding. Specifically, the C-shaped slot of the mounting base and the flat copper wire of the motor winding are clamped and fixed by an interference fit. Furthermore, the mounting base is made of a metal material, such as copper or aluminum, which has a high thermal conductivity, ensuring efficient heat transfer between the temperature sensor and the flat copper wire of the motor winding.

[0025] In this embodiment, a vertically arranged limiting baffle 34 is integrally connected to one end of the upper surface of the C-shaped slot near the first bending member. When the temperature sensor is placed on the mounting base, the limiting baffle contacts the end face of the housing of the temperature sensor, thereby limiting / positioning the temperature sensor from one end, and then locking the temperature sensor through the first bending member and the second bending member.

[0026] Specifically, the first bending member includes a vertically arranged first connecting piece and a horizontally arranged first bending piece connected to the top of the first connecting piece. The first bending member and the upper surface of the C-shaped slot together form a C-shaped structure. The vertical length of the first connecting piece is consistent with the thickness of the temperature sensor housing, and the horizontal length of the first bending piece is greater than the width of the temperature sensor housing. The end of the first bending piece away from the first connecting piece is bendable. The structure of the second bending member is similar to that of the first bending member, including a vertically arranged second connecting piece and a horizontally arranged second bending piece connected to the top of the second connecting piece. The second bending member and the upper surface of the C-shaped slot together form a C-shaped structure. The vertical length of the second connecting piece is consistent with the thickness of the temperature sensor wire, and the horizontal length of the second bending piece is greater than the width of the temperature sensor wire. The end of the second bending piece away from the second connecting piece is bendable. The temperature sensor is placed from one side into the C-shaped structure formed by the first and second bending pieces and the C-shaped slot on the mounting base, and positioned by a limiting baffle. At this time, the first and second bending pieces are placed on the housing and wires of the temperature sensor. Using professional bending equipment, the end of the first bending piece away from the first connecting piece and the end of the second bending piece away from the second connecting piece are bent, thereby locking the housing and wires of the temperature sensor and making the temperature sensor and the mounting base form a stable connection.

Claims

1. A motor winding temperature measuring device, installed on the flat copper wire of the motor winding, for measuring the temperature of the motor winding, characterized in that: The temperature measuring device includes: A temperature sensor includes a housing, a probe, and a wire. The probe has a flat structure, and the wire is connected to one end of the probe. The housing has a rectangular structure, and the probe is placed inside the housing and fixed to the housing by thermally conductive adhesive. The mounting base includes a C-shaped slot and a first bending member and a second bending member integrally connected to the upper surface of the C-shaped slot and arranged along the length of the C-shaped slot. The temperature sensor is placed on the upper surface of the C-shaped slot, and the housing and wire of the temperature sensor are locked by the first bending member and the second bending member respectively, thus locking the entire temperature sensor onto the mounting base. The C-shaped slot clamps the flat copper wire of the motor winding from the side, so that the entire mounting base is fixed to the flat copper wire of the motor winding.

2. The motor winding temperature measuring device according to claim 1, characterized in that: A vertically positioned limiting baffle is integrally connected to one end of the upper surface of the C-shaped slot near the first bending member. When the temperature sensor is placed on the mounting base, the limiting baffle contacts the end face of the temperature sensor's housing to limit the temperature sensor's position.

3. The motor winding temperature measuring device according to claim 1, characterized in that: The first bending member includes a vertically arranged first connecting piece and a horizontally arranged first bending piece connected to the top of the first connecting piece. The first bending member and the upper surface of the C-shaped slot together form a C-shaped structure. The vertical length of the first connecting piece is consistent with the thickness of the temperature sensor housing. The horizontal length of the first bending piece is greater than the width of the temperature sensor housing. The end of the first bending piece away from the first connecting piece can be bent.

4. The motor winding temperature measuring device according to claim 1, characterized in that: The second bending member includes a vertically arranged second connecting piece and a horizontally arranged second bending piece connected to the top of the second connecting piece. The second bending member and the upper surface of the C-shaped slot together form a C-shaped structure. The vertical length of the second connecting piece is consistent with the thickness of the wire of the temperature sensor. The horizontal length of the second bending piece is greater than the width of the wire of the temperature sensor, and the end of the second bending piece away from the second connecting piece can be bent.

5. The motor winding temperature measuring device according to claim 1, characterized in that: Two first bending components are arranged side by side, and the two first bending components are locked together on the housing of the temperature sensor.

6. The motor winding temperature measuring device according to claim 1, characterized in that: The outer shell is made of metal.

7. The motor winding temperature measuring device according to claim 1, characterized in that: The mounting base is made of metal.

8. The motor winding temperature measuring device according to claim 1, characterized in that: The C-shaped slot of the mounting base is clamped and fixed to the flat copper wire of the motor winding through an interference fit.

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