Air conditioner indoor sheath type temperature sensor

Abstract

The utility model provides an air conditioner indoor sheath type temperature sensor, which comprises a temperature sensor body and a wire body, one end of the wire body is provided with a welding spot, the temperature sensor body comprises a first packaging layer, an epoxy resistor is wrapped in the first packaging layer, the epoxy resistor is welded with the wire body through the welding spot, the epoxy resistor is completely wrapped by silica gel, and the silica gel is filled with an adhesive. The epoxy resistor and the welding spot which are completely wrapped by silica gel are packaged in the first packaging layer through the first epoxy resin, the waterproof and insulating performance of the sensor is further improved, the service life of the temperature sensor is greatly prolonged, meanwhile, the wire body adopts the double-spliced wire wrapped by the sheath, the temperature sensor can be effectively protected, and the service life of the temperature sensor is prolonged. And the stability and the reliability of the device are improved to a great extent.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, and particularly relates to an indoor sheathed temperature sensor for an air conditioner. Background Art

[0002] As an indispensable comfort device in modern life, the performance of an air conditioner is closely related to the user experience. In an air conditioning system, a temperature sensor plays a crucial role. It not only monitors the ambient temperature but also participates in controlling the operation of the air conditioning system to ensure that the indoor environment reaches the set comfort level. However, there are some limitations in the design and manufacturing process of traditional indoor temperature sensors for air conditioners, which directly affect the reliability of the sensors and the overall performance of the air conditioning system.

[0003] Traditional indoor temperature sensors for air conditioners usually use PVC sleeves or heat shrink tubes as the outer protection. This material is prone to aging and wear during long-term use, resulting in a decrease in the insulation performance of the wires and even wire damage, affecting the stability and accuracy of the sensors. The temperature sensing speed and accuracy of traditional sensors are also limited. The heat exchange efficiency between the temperature sensing element and the external environment is relatively low, resulting in a less sensitive response to temperature changes and affecting the temperature control accuracy of the air conditioning system. At the same time, traditional sensors are prone to problems such as falling off and poor contact during alternating high and low temperature changes and impacts, reducing the stability and reliability of the system.

[0004] The production process of traditional temperature sensors also has the defects of low efficiency and dependence on manual operation. Its production process includes multiple steps such as wire cutting, wire splitting, tinning, soldering, dipping, and encapsulation. These steps often need to be completed manually, which is not only time-consuming and laborious but also difficult to ensure consistent quality, affecting production efficiency and the reliability of the sensors.

[0005] Therefore, the existing technology still needs to be further developed. Content of the Utility Model

[0006] The purpose of the utility model is to overcome the above technical deficiencies and provide an indoor sheathed temperature sensor for an air conditioner to solve the problems existing in the prior art.

[0007] To achieve the above technical purpose, the utility model provides an indoor sheathed temperature sensor for an air conditioner, including a temperature sensor body and a wire body, specifically including:

[0008] A solder joint is provided at one end of the wire body. The temperature sensor body includes a first encapsulation layer. An epoxy resistor is wrapped in the first encapsulation layer. The epoxy resistor is welded to the wire body through the solder joint. The epoxy resistor is completely wrapped by silica gel. The epoxy resistor completely wrapped by silica gel and the solder joint are encapsulated in the first encapsulation layer by first epoxy resin.

[0009] Specifically, the wire body is a double - stranded wire, and the double - stranded wire includes a first cable and a second cable. One end of the first cable is provided with a first solder joint, and one end of the second cable is provided with a second solder joint. One end of the epoxy resistor is welded to the first cable through the first solder joint, and the other end of the epoxy resistor is welded to the second cable through the second solder joint.

[0010] Specifically, the first cable includes a first inner core wire and a first outer sheath, and the second cable includes a second inner core wire and a second outer sheath. One end of the first inner core wire is provided with a first solder joint, and one end of the second inner core wire is provided with a second solder joint.

[0011] Specifically, the first encapsulation layer is potted in the copper tube through a second epoxy resin.

[0012] Specifically, the wire body includes a sheathed part and an unsheathed part. The first encapsulation layer, the unsheathed part, and a part of the sheathed part are potted in the copper tube through a second epoxy resin.

[0013] Specifically, the length of the sheathed part of the sheath potted in the copper tube is between 5 mm and 10 mm.

[0014] Specifically, the length of the unsheathed part of the sheath potted in the copper tube is between 2 mm and 8 mm.

[0015] Specifically, the wrapping thickness of the sheath of the sheathed part is greater than 0.5 mm.

[0016] Specifically, the wall thickness of the copper tube is 0.25 ± 0.05 mm.

[0017] Specifically, the resistance value of the epoxy resistor is greater than or equal to 10 KΩ at 25 °C, and the accuracy of the resistance value of the epoxy resistor at 25 °C is less than or equal to 1%.

[0018] Beneficial effects:

[0019] The utility model includes a temperature sensor body and a wire body. One end of the wire body is provided with a solder joint. The temperature sensor body includes a first encapsulation layer. An epoxy resistor is wrapped in the first encapsulation layer. The epoxy resistor is welded to the wire body through the solder joint. The epoxy resistor is completely wrapped by silica gel. The epoxy resistor completely wrapped by silica gel and the solder joint are encapsulated in the first encapsulation layer through a first epoxy resin, further improving the waterproof and insulating performance of the sensor and greatly increasing the service life of the temperature sensor. At the same time, the wire body adopts a double - stranded wire with an outer sheath, which can effectively protect the temperature sensor and greatly improve the stability and reliability of the utility model. Description of the Drawings

[0020] Figure 1It is a schematic structural diagram of the visible exterior of an indoor sheathed temperature sensor for an air conditioner provided in the specific implementation manner of the present utility model;

[0021] Figure 2 It is a schematic structural diagram of the body of an indoor sheathed temperature sensor for an air conditioner provided in the specific implementation manner of the present utility model;

[0022] Among them, the above-mentioned drawings include the following reference numerals:

[0023] 1. Epoxy resistor; 2. First outer skin; 3. Silicone; 4. First epoxy resin; 5. Second epoxy resin; 6. Copper tube; 7. Temperature sensor body; 8. Second outer skin; 9. First encapsulation layer; 10. First solder joint; 11. Second solder joint; 12. Unwrapped part of the sheath; 13. Wrapped part of the sheath. Specific implementation manner

[0024] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model will be clearly and completely described below in conjunction with the drawings of the present utility model. Based on the embodiments in this application, other similar embodiments obtained by those of ordinary skill in the art without making creative efforts shall all fall within the scope of protection of this application. In addition, the directional terms mentioned in the following embodiments, such as "upper", "lower", "left", "right", etc., are only with reference to the directions of the drawings. Therefore, the directional terms used are for illustration rather than to limit the present invention.

[0025] The present utility model will be further described below in conjunction with the drawings and preferred embodiments.

[0026] Please refer to Figure 1 and Figure 2 , this embodiment provides an indoor sheathed temperature sensor for an air conditioner, including a temperature sensor body 7 and a wire body, including:

[0027] One end of the wire body is provided with a solder joint. The temperature sensor body 7 includes a first encapsulation layer 9. The first encapsulation layer 9 wraps an epoxy resistor 1. The epoxy resistor 1 is welded to the wire body through the solder joint. The epoxy resistor 1 completely wrapped by the silicone 3 and the solder joint are encapsulated in the first encapsulation layer 9 through the first epoxy resin 4.

[0028] It can be understood that the epoxy resistor 1 is a high-precision epoxy resistor with a relatively large resistance value. Therefore, the errors caused by the internal resistance of the wire and the temperature-sensing component can be ignored, and the measurement of the epoxy thermistor is highly accurate, with the accuracy of the reference point temperature resistance value being 1%. This further improves the stability of the sensor. Wrapping the silicone 3 around the epoxy resistor 1 can play a role in insulation and waterproofing, which is also the key to the external waterproofing of the sensor of the present invention. The silicone 3 and the epoxy resistor 1 can be tightly bonded together to form a dense protective layer and a hydrophobic layer, which can effectively prevent the intrusion of external moisture. Then, the epoxy resistor 1 completely wrapped by the silicone 3 is encapsulated again by the first epoxy resin 4, thereby further improving the waterproof and dustproof performance of the sensor of the present invention, effectively insulating the epoxy resistor 1 itself from the outside, greatly increasing the service life of the sensor, and ensuring the product characteristics of the present invention to a large extent.

[0029] Specifically, the wire body is a double-strand wire. The double-strand wire includes a first cable and a second cable. One end of the first cable is provided with a first solder joint 10, and one end of the second cable is provided with a second solder joint 11. One end of the epoxy resistor 1 is welded to the first cable through the first solder joint 10, and the other end of the epoxy resistor 1 is welded to the second cable through the second solder joint 11.

[0030] It can be understood that the wire body of the present invention adopts a special sheathed wire with a double-strand wire outer sheath. The double-strand wire is usually a single cable made by arranging two insulated cables side by side. The design of the double-strand wire helps to reduce the occupied space of the wire, while providing sufficient conductivity, greatly improving the durability and protection performance of the data transmission connection wire. The first cable and the second cable in the double-strand wire are respectively welded to both ends of the epoxy resistor 1 through the first solder joint 10 and the second solder joint 11. The welding process includes soldering, resistance welding, laser welding, current welding, etc., and different welding processes can be selected according to different product process requirements. A comprehensive welding standard and detection system have been established during the R & D process to ensure that each solder joint meets the quality requirements, with a full and plump solder surface on the solder joint and no defects such as over-welding, false welding, short circuit, open circuit, and insulation skin scalding, thereby ensuring the stability and service life of the sheathed temperature sensor.

[0031] Specifically, the first cable includes a first inner core wire and a first outer skin 2, and the second cable includes a second inner core wire and a second outer skin 8. One end of the first inner core wire is provided with a first solder joint 10, and one end of the second inner core wire is provided with a second solder joint 11.

[0032] It should be further noted that the first inner core wire and the second inner core wire comply with the UL2651 standard of the air-conditioning industry. The thickness of the outer sheath of the double-stranded wire is more than 0.5 mm, ensuring the overall strength and consistency of the wire body, reducing signal interference or attenuation caused by loose structure, improving the mechanical stability and durability of the wire body. During the use of the wire body, it can further prevent pulling or abrasion, and at the same time can effectively prevent the aging of the insulation layer of the wire body after long-term use, resulting in wire body damage, thus greatly ensuring the stability of the sensor performance.

[0033] Specifically, the first encapsulation layer 9 is potted in the copper tube 6 through the second epoxy resin 5.

[0034] It can be understood that the second epoxy resin 5 encapsulates the epoxy resistor 1, solder joints, and the first epoxy resin 4 completely wrapped by the silica gel 3 inside the copper tube 6. The second epoxy resin 5 has good bonding ability with the copper tube 6 and the wire body. Even if forced to be separated by external force, a large amount of resin will adhere to the wire body and the copper tube 6. This characteristic can ensure the normal use of the sensor during the alternating change of high and low temperatures and impact, without causing detachment.

[0035] Specifically, the wire body includes a sheathed portion 13 and an unsheathed portion 12. The first encapsulation layer 9, the unsheathed portion 12, and a part of the sheathed portion 13 are potted in the copper tube 6 through the second epoxy resin 5.

[0036] It can be understood that the wire body includes a sheathed portion 13 and an unsheathed portion 12. The sheathed portion 13 is partially tightly wrapped by the sheath material, aiming to provide external protection to prevent mechanical damage and the influence of environmental factors (such as humidity and temperature changes) on the wire body. The unsheathed portion is directly connected to the epoxy resistor 1 of the sensor and is not wrapped by an additional sheath, facilitating electrical connection and signal transmission. In order to stably integrate the sheathed portion 13, the unsheathed portion 12 of the wire body, and the first encapsulation layer 9 into the copper tube 6, the second epoxy resin 5 is used for potting, making the sensor integrated. While improving the aesthetics, the protection of the sheath greatly improves the performance and service life of the sensor.

[0037] Specifically, the length of the sheathed portion 13 potted in the copper tube 6 is between 5 mm and 10 mm.

[0038] Specifically, the length of the unsheathed portion 12 potted in the copper tube 6 is between 2 mm and 8 mm.

[0039] Specifically, the wrapping thickness of the sheath of the sheathed portion 13 is greater than 0.5 mm.

[0040] Furthermore, the wrapping thickness of the outer sheath is designed to be more than 0.5 mm. Such a thickness can provide additional mechanical protection and also help improve the insulation performance of the wire. In high-temperature, humid or other harsh environments, the thicker sheath can better protect the internal wires and sensor components, ensuring the long-term stable operation of the sensor.

[0041] The wall thickness of the copper tube 6 is 0.25 ± 0.05 mm.

[0042] It should be further noted that the wall thickness of the copper tube 6 is 0.25 ± 0.05 mm, and the copper tube 6 is anodized. This double guarantee ensures that the copper tube is not corroded or oxidized, and it can still remain as bright as new after long-term use. The 0.25-mm-thick copper tube can increase the temperature sensing speed of the sensor, enabling the external environmental temperature to be transmitted to the inside of the sensor faster, greatly ensuring the temperature sensing speed of the sensor. Moreover, the copper tube 6 can be installed at the temperature sensing location through fixed buckles, which is convenient to use.

[0043] Specifically, the resistance value of the epoxy resistor 1 is greater than or equal to 10 KΩ at 25°C, and the accuracy of the resistance value of the epoxy resistor 1 at 25°C is less than or equal to 1%.

[0044] It can be understood that the epoxy resistor 1 in the present utility model is a high-precision epoxy resistor. A resistor with a resistance value of 10 KΩ or more at 25°C is selected. Its resistance value is relatively large, and the error caused by the internal resistance of the wire and the temperature sensing component can be ignored. And the accuracy of the resistance value of the epoxy resistor 1 at 25°C is less than or equal to 1%, which means that there is only an allowable deviation of ±1% based on the nominal value of the resistance value, further improving the stability and measurement accuracy of the epoxy resistor.

[0045] Here, it should be noted that the present utility model includes a temperature sensor body 7 and a wire body. One end of the wire body is provided with a solder joint. The temperature sensor body includes a first encapsulation layer 9. The first encapsulation layer 9 wraps the epoxy resistor 1. The epoxy resistor 1 is welded to the wire body through the solder joint. The epoxy resistor 1 is completely wrapped by the silica gel 3. The epoxy resistor 1 and the solder joint completely wrapped by the silica gel 3 are encapsulated in the first encapsulation layer 9 through the first epoxy resin 4, further improving the waterproof and insulation performance of the sensor and greatly increasing the service life of the temperature sensor. At the same time, the wire body adopts a double-stranded wire with an outer sheath, which can effectively protect the temperature sensor and greatly improve the stability and reliability of the present utility model.

[0046] The above-described technical features can be combined arbitrarily. Although not all possible combinations of these technical features are described, any combination of these technical features should be considered to be covered by this specification as long as such a combination does not exist in contradiction.

[0047] The specific embodiments of the present utility model described above do not constitute a limitation to the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. An indoor sheath temperature sensor for an air conditioner, comprising a temperature sensor body (7) and a wire body, characterized in that: include: A welding point is provided at one end of the wire body, the temperature sensor body (7) comprises a first packaging layer (9), an epoxy resistor (1) is wrapped in the first packaging layer (9), the epoxy resistor (1) is welded to the wire body via the welding point, the epoxy resistor (1) is completely wrapped by silica gel (3), and the epoxy resistor (1) completely wrapped by silica gel (3) and the welding point are encapsulated in the first packaging layer (9) via a first epoxy resin (4).

2. The air-conditioning indoor sheath temperature sensor according to claim 1, characterized in that: The wire body is a double-jointed wire, comprising a first cable and a second cable, one end of the first cable being provided with a first welding point (10), one end of the second cable being provided with a second welding point (11), one end of the epoxy resistor (1) being welded to the first cable via the first welding point (10), and the other end of the epoxy resistor (1) being welded to the second cable via the second welding point (11).

3. The air-conditioning indoor sheath temperature sensor according to claim 2, characterized in that: The first cable comprises a first inner core wire and a first outer sheath (2), the second cable comprises a second inner core wire and a second outer sheath (8), one end of the first inner core wire is provided with a first welding point (10), and one end of the second inner core wire is provided with a second welding point (11).

4. The air-conditioning indoor sheath temperature sensor according to claim 1, characterized in that: The first encapsulation layer (9) is encapsulated in the copper tube (6) by a second epoxy resin (5).

5. The air-conditioning indoor sheath temperature sensor according to claim 4, characterized in that: The wire body comprises a sheath-wrapped portion (13) and a sheath-unwrapped portion (12); the first packaging layer (9), the sheath-unwrapped portion (12), and part of the sheath-wrapped portion (13) are encapsulated in a copper tube (6) by a second epoxy resin (5).

6. The air-conditioning indoor sheath temperature sensor according to claim 5, characterized in that: The length of the sheath wrapping portion (13) embedded in the copper tube (6) is between 5 mm and 10 mm.

7. The air-conditioning indoor sheath temperature sensor according to claim 6, characterized in that: The length of the unwrapped portion (12) of the sheath sealed in the copper tube (6) is between 2 mm and 8 mm.

8. The indoor sheath temperature sensor for air conditioners according to claim 7, characterized in that: The sheath wrapping thickness of the sheath wrapping portion (13) is greater than 0.5 mm.

9. The indoor sheath temperature sensor for air conditioners according to claim 6, characterized in that: The wall thickness of the copper tube (6) is 0.25±0.05 mm.

10. The air-conditioning indoor sheath temperature sensor according to claim 1, characterized in that: The resistance value of the epoxy resistor (1) is greater than or equal to 10KΩ at 25° C., and the accuracy of the resistance value of the epoxy resistor (1) at 25° C. is less than or equal to 1%.

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