An assembled NTC temperature sensor for household appliances

Abstract

The utility model discloses a kind of NTC temperature sensors for assembled household appliances, it is related to temperature sensor technical field, the utility model includes feel probe, the bottom of feel probe is equipped with arc slot, the outer surface of feel probe is attached with heat preservation layer, and the two sides of heat preservation layer are connected with restraint band, one side of a group of restraint band is equipped with first magic paste, the utility model is equipped with connecting portion and arc slot, the contact area of feeler and exhaust pipe can be greatly improved by the attachment of arc slot and exhaust pipe, temperature transfer rate is significantly improved, the timeliness and accuracy of temperature acquisition are guaranteed;And heat shrink tube is only wrapped on connecting portion instead of directly wrapping on feel probe, so that the attachment of feeler and exhaust pipe can be avoided by the blockage of heat shrink tube, further ensure that feeler and exhaust pipe surface are fully contacted, temperature acquisition is more accurate, and then reliable basis is provided for accurate adjustment of electronic expansion valve, the use effect and operating stability of air conditioner are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of temperature sensor technology, specifically to an NTC temperature sensor for assembled household appliances. Background Technology

[0002] An air conditioner is a device that uses temperature sensors to collect ambient temperature values ​​to control temperature. Currently, the most commonly used temperature sensors are NTC thermistors, which have the advantages of fast response and low price. Multiple NTC thermistors are installed on the indoor and outdoor units of the air conditioner to collect the ambient temperature and the temperature of the indoor and outdoor coils, respectively. The controller in the air conditioner processes the temperature values ​​collected by multiple temperature sensors and controls the operation of the compressor, fan, and other loads in the air conditioner to meet the temperature control requirements of rooms, special places, etc. It can be seen that the temperature sensor is the core component for the temperature control of an air conditioner.

[0003] Please see Figures 1-3 To ensure accurate adjustment of the expansion valve, a temperature sensor needs to be installed on the exhaust pipe 400 of the outdoor unit of the air conditioner. Currently, temperature sensors are clipped onto the exhaust pipe using pipe clamps. However, because the existing temperature sensor's sensing head 100 is inserted into the heat shrink tubing 200, and the outer diameter of the heat shrink tubing 200 is larger than the outer diameter of the sensing head 100, after the temperature sensor is installed, the end where the sensing head is connected to the heat shrink tubing tilts up, creating a gap 300 (e.g., ...). Figure 3 As shown in the figure, only the other end of the part is in contact with the surface of the exhaust pipe 400. The incomplete contact between the contact surfaces leads to a large deviation in the collected temperature and affects the temperature transfer rate. This temperature accuracy affects the speed of adjustment of the electronic expansion valve and directly affects the air conditioning performance. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide an assembled NTC temperature sensor for household appliances to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an assembled NTC temperature sensor for household appliances, including a sensing probe, an arc-shaped groove at the bottom of the sensing probe, an insulation layer attached to the outer surface of the sensing probe, and binding straps connected to both sides of the insulation layer, a first Velcro strap on one side of one set of binding straps, a second Velcro strap on one side of the other set of binding straps, and a connecting part on the back of the sensing probe.

[0006] Furthermore, a wire is connected to the back of the connector, and the wire and the outer surface of the connector are wrapped with heat shrink tubing.

[0007] By adopting the above technical solution, wrapping the wires and the connection with heat shrink tubing can enhance the stability of the connection, while achieving insulation and moisture protection, and preventing the connection from being affected by the external environment and thus affecting signal transmission.

[0008] Furthermore, the connecting part is integrally formed with the sensing probe, and the outer surface of the connecting part is provided with raised texture.

[0009] By adopting the above technical solution, the overall structural stability is improved by integrating the connecting part with the sensing probe; the raised texture on the outer surface of the connecting part can enhance the adhesion and tightness with external components such as heat shrink tubing, thus preventing detachment.

[0010] Furthermore, the restraint straps are provided in two sets, with one set of restraint straps being longer than the other set.

[0011] By adopting the above technical solutions, the Velcro can be more easily aligned during bonding, improving installation convenience and indirectly ensuring a stable fit between the sensor and the exhaust pipe to maintain accurate temperature measurement.

[0012] Furthermore, the first hook and loop fastener has a hook side, and the second hook and loop fastener has a loop side.

[0013] By adopting the above technical solution, the matching combination of the hook surface and the rough surface ensures that the two are firmly bonded together and not easy to loosen, thus ensuring the stability of the temperature sensor on the exhaust pipe.

[0014] Furthermore, the insulation layer is made of glass fiber cotton material.

[0015] By adopting the above technical solution, the excellent thermal insulation properties of glass fiber cotton can effectively isolate external temperature interference and ensure the accuracy of temperature measurement by the sensor probe. At the same time, glass fiber cotton is resistant to high and low temperatures and anti-aging, and can adapt to the complex working conditions of air conditioner outdoor units, improving the durability of the insulation layer. Moreover, its flexibility can closely fit the outer surface of the sensor probe without affecting the overall installation and fixation of the sensor.

[0016] Furthermore, the diameter of the connecting part is smaller than the diameter of the sensing probe.

[0017] By adopting the above technical solution, interference between the probe and the exhaust pipe due to excessive size of the connection part can be avoided, thus ensuring the temperature measurement contact effect.

[0018] Furthermore, the inner side of the restraint strap is provided with several sets of anti-slip strips, and all sets of anti-slip strips are made of silicone material.

[0019] By adopting the above technical solution and setting a silicone anti-slip strip on the inside of the restraint strap, the friction with the exhaust pipe surface can be significantly increased, effectively preventing the temperature sensor from slipping or shifting due to vibration after it is fixed, ensuring that the sensor probe and the exhaust pipe are in continuous tight contact to maintain accurate temperature measurement; at the same time, the silicone material is resistant to high and low temperatures and has good flexibility, which can adapt to the complex working conditions of the air conditioner outdoor unit without damaging the exhaust pipe surface, thus improving the durability and usability of the restraint strap.

[0020] In summary, the present invention has the following main advantages:

[0021] 1. This utility model is equipped with a connecting part and an arc-shaped groove. The contact area between the temperature sensor and the exhaust pipe can be greatly increased by the fit of the arc-shaped groove with the exhaust pipe, which significantly improves the temperature transfer rate and ensures the timeliness and accuracy of temperature acquisition. In addition, the heat shrink tubing is only wrapped on the connecting part rather than directly wrapped on the sensor. This avoids the heat shrink tubing from obstructing the fit between the temperature sensor and the exhaust pipe, further ensuring full contact between the temperature sensor and the surface of the exhaust pipe, making the temperature acquisition more accurate. This provides a reliable basis for the accurate adjustment of the electronic expansion valve and effectively improves the performance and operational stability of the air conditioner.

[0022] 2. This utility model includes an insulation layer, a binding strap, a first Velcro strap, and a second Velcro strap. The insulation layer prevents external temperature interference with the temperature sensor, reduces measurement errors caused by ambient temperature fluctuations, and ensures the accuracy of temperature acquisition. When fixing the temperature sensor to the exhaust pipe, the worker wraps the binding strap around the exhaust pipe and then attaches the second Velcro strap to the first Velcro strap. This achieves a stable fixation of the temperature sensor without the need for pipe clamps, making temperature sensor assembly more convenient, simplifying the installation process, reducing installation difficulty, and avoiding the loosening problems that may occur with pipe clamps. This ensures continuous and tight contact between the temperature sensor and the exhaust pipe, further improving the stability and reliability of temperature measurement. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of an existing temperature sensor structure;

[0024] Figure 2 This is a schematic diagram of the existing temperature sensor and exhaust pipe structure;

[0025] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0026] Figure 4 This is a schematic diagram of the structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the sensor structure of this utility model.

[0028] Figure 6 This is a schematic diagram of the sensor structure of this utility model.

[0029] Figure 7 This is a schematic diagram of the restraint strap structure of this utility model.

[0030] Figure 8 This utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0031] In the diagram: 1. Sensor probe; 101. Arc groove; 2. Wire; 3. Heat shrink tubing; 4. Reinforcing strap; 5. First Velcro; 6. Second Velcro; 7. Anti-slip strip; 8. Insulation layer; 9. Connecting part; 10. Raised texture. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] The embodiments of this utility model will be described below based on its overall structure.

[0034] Example 1: An assembled NTC temperature sensor for home appliances, such as... Figures 3-8 As shown, the device includes a sensor 1 with an arc-shaped groove 101 at its bottom. An insulation layer 8 is attached to the outer surface of the sensor 1, and binding straps 4 are connected to both sides of the insulation layer 8. One set of binding straps 4 has a first Velcro 5 on one side, and the other set has a second Velcro 6 on one side. Several sets of anti-slip strips 7 are provided on the inner side of the binding straps 4, and these anti-slip strips 7 are all made of silicone material. By providing silicone anti-slip strips 7 on the inner side of the binding straps 4, the friction with the exhaust pipe surface can be significantly increased, effectively preventing the temperature sensor from slipping due to vibration after it is fixed. The position ensures a continuous and tight fit between the sensing probe 1 and the exhaust pipe to maintain accurate temperature measurement. Simultaneously, the silicone material is resistant to high and low temperatures and has excellent flexibility, adapting to the complex operating conditions of the air conditioner outdoor unit without damaging the exhaust pipe surface, thus improving the durability and usability of the restraint strap 4. The back of the sensing probe 1 has a connecting part 9, and the back of the connecting part 9 is connected to a wire 2. The outer surfaces of the wire 2 and the connecting part 9 are wrapped with heat-shrink tubing 3. Wrapping the wire 2 and the connecting part 9 with heat-shrink tubing 3 enhances the stability of the connection and provides insulation and moisture protection, preventing signal transmission from being affected by the external environment.

[0035] See Figure 3 and Figure 7In the above embodiment, the binding strap 4 is provided in two sets, one set of binding strap 4 being longer than the other set of binding strap 4. This makes it easier to align the Velcro during bonding, improving installation convenience and indirectly ensuring the stable bonding of the sensor 1 and the exhaust pipe to maintain accurate temperature measurement. The first Velcro 5 is the hook side of the Velcro, and the second Velcro 6 is the rough side of the Velcro. The matching combination of the hook side and the rough side ensures that the two are firmly bonded and not easy to loosen, ensuring the fixed stability of the temperature sensor on the exhaust pipe.

[0036] See Figures 3-6 In the above embodiments, the insulation layer 8 is made of glass fiber cotton. The excellent heat insulation performance of glass fiber cotton effectively isolates external temperature interference, ensuring the accurate temperature measurement of the sensor probe 1. At the same time, glass fiber cotton is resistant to high and low temperatures and anti-aging, and can adapt to the complex working conditions of the air conditioner outdoor unit, improving the durability of the insulation layer 8. Its flexibility can closely fit the outer surface of the sensor probe 1 without affecting the overall installation and fixation of the sensor.

[0037] See Figures 2-3 In the above embodiment, the diameter of the connecting part 9 is smaller than the diameter of the sensing probe 1, which can prevent the connecting part 9 from interfering with the fit between the sensing probe 1 and the exhaust pipe due to its excessive size, and ensure the temperature measurement contact effect.

[0038] Example 2: To ensure a tight fit between the heat shrink tubing and the connector, preventing detachment, Example 2 is an improvement upon Example 1. (See attached document.) Figure 5 and Figure 8 The connecting part 9 is integrally formed with the sensing probe 1. The outer surface of the connecting part 9 is provided with raised texture 10. By integrating the connecting part 9 with the sensing probe 1, the overall structural stability is improved. The raised texture 10 on the outer surface of the connecting part 9 can enhance the adhesion and tightness with external components such as heat shrink tubing 3, thus preventing detachment.

[0039] The implementation principle of this utility model is as follows: First, the operator aligns the arc-shaped groove 101 at the bottom of the sensor 1 with the exhaust pipe of the air conditioner outdoor unit and attaches it to ensure that the sensor 1 makes full contact with the surface of the exhaust pipe; then, the two sets of binding straps 4 on both sides of the insulation layer 8 on the outer surface of the sensor 1 are wrapped around the exhaust pipe, and the first Velcro 5 of one set of binding straps 4 is glued and fixed to the second Velcro 6 of the other set. The silicone anti-slip strip 7 on the inner side of the binding strap 4 can increase the friction with the exhaust pipe and prevent the sensor from slipping and shifting due to vibration, thereby allowing the temperature sensor to be assembled on the pipe; after the arc-shaped groove 101 at the bottom of the sensor 1 is attached to the exhaust pipe, the temperature of the exhaust pipe is measured. The resistance of the thermistor is transmitted through the outer shell of the sensor 1 to the internal thermistor (wire 2 is electrically connected to the internal thermistor of the sensor 1). The resistance value of the thermistor changes precisely with the temperature it comes into contact with (e.g., the resistance value of an NTC thermistor decreases when the temperature rises). This change in resistance value is converted into a corresponding electrical signal through the internal leads, and then transmitted to the air conditioner main control module through the external wire 2 of the connector on the back of the sensor 1. After receiving the temperature signal, the main control module compares and analyzes it with the preset temperature parameters of the system, and then precisely controls the opening and closing degree of the electronic expansion valve to regulate the air conditioner's cooling / heating cycle and ensure the air conditioner's operating effect.

[0040] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An assembled NTC temperature sensor for household appliances, comprising a sensing probe (1), characterized in that: The bottom of the sensor (1) is provided with an arc groove (101), the outer surface of the sensor (1) is attached with a heat insulation layer (8), and both sides of the heat insulation layer (8) are connected with a binding strap (4). One side of one set of binding straps (4) is provided with a first Velcro (5), and one side of the other set of binding straps (4) is provided with a second Velcro (6). The back of the sensor (1) is provided with a connecting part (9).

2. The assembled NTC temperature sensor for household appliances according to claim 1, characterized in that: The back of the connecting part (9) is connected to a wire (2), and the outer surfaces of the wire (2) and the connecting part (9) are wrapped with heat shrink tubing (3).

3. The assembled NTC temperature sensor for household appliances according to claim 1, characterized in that: The connecting part (9) is integrally formed with the sensing probe (1), and the outer surface of the connecting part (9) is provided with raised texture (10).

4. The assembled NTC temperature sensor for household appliances according to claim 1, characterized in that: The restraint straps (4) are provided in two sets, one set of restraint straps (4) being longer than the other set of restraint straps (4).

5. The assembled NTC temperature sensor for household appliances according to claim 1, characterized in that: The first hook and loop fastener (5) is the hook side, and the second hook and loop fastener (6) is the loop side.

6. The assembled NTC temperature sensor for household appliances according to claim 1, characterized in that: The insulation layer (8) is made of glass fiber cotton material.

7. The assembled NTC temperature sensor for household appliances according to claim 1, characterized in that: The diameter of the connecting part (9) is smaller than the diameter of the sensing probe (1).

8. The assembled NTC temperature sensor for household appliances according to claim 1, characterized in that: The inner side of the restraint strap (4) is provided with several sets of anti-slip strips (7), and the several sets of anti-slip strips (7) are all made of silicone material.

Images