Temperature and pressure sensor for new refrigerant

Abstract

The utility model discloses a temperature and pressure sensor for a new refrigerant, which comprises a shell with a built-in pressure sensing component, the shell is externally connected with an electric appliance connector connected with the pressure sensing component, and the shell is internally provided with an NTC (Negative Temperature Coefficient) thermistor connected with the pressure sensing component; the pressure sensing component is a five-pin ceramic capacitor, two pins of the five-pin ceramic capacitor are temperature measuring pin bodies which penetrate through a ceramic capacitor body and are connected with the NTC thermistor, and a pressure-resistant protective ring which surrounds the temperature measuring pin bodies is arranged between the pressure sensing component and the shell in an extruding manner. According to the utility model, the five-pin ceramic capacitor is used as a pressure sensing component, two pins for temperature measurement are designed to be of a straight-through type structure, and the withstand voltage protection ring with a double-ring-layer withstand voltage protection structure is arranged, so that the withstand voltage capability of the temperature and pressure sensor is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of temperature and pressure sensors, and particularly relates to a temperature and pressure sensor for a new refrigerant. Background Technique

[0002] At present, some of the existing temperature and pressure sensors have a too long temperature response time to meet the market demand, and some have a complex structure and are difficult to mass-produce, resulting in high production costs; the pressure of refrigerant systems such as R290 is higher than that of traditional refrigerant systems, and the existing product solutions have the risk of pressure durability. In order to solve the problems of slow temperature response time of temperature and pressure sensors, complex assembly structure and difficulty in mass production, and high pressure of new refrigerant systems, the utility model designs a temperature and pressure sensor for a new refrigerant. Summary of the Invention

[0003] Object of the Invention: In order to overcome the deficiencies existing in the prior art, the utility model provides a temperature and pressure sensor for a new refrigerant, which uses a five-pin ceramic capacitor as a pressure-sensing component. Among them, the two pins for temperature measurement are designed with a through-type structure, and a pressure-resistant protection ring with a double-layer pressure-resistant protection structure is set to improve the pressure-resistant ability of the temperature and pressure sensor.

[0004] Technical Solution: To achieve the above object, a temperature and pressure sensor for a new refrigerant of the utility model includes a housing with an internal pressure-sensing component, an electrical connector connected to the pressure-sensing component is externally connected to the housing, and an NTC thermistor connected to the pressure-sensing component is internally arranged in the housing;

[0005] The pressure-sensing component is a five-pin ceramic capacitor. Two of the five pins of the five-pin ceramic capacitor are temperature-measuring pin bodies that penetrate through the ceramic capacitor body and are connected to the NTC thermistor. A pressure-resistant protection ring surrounding and enclosing the temperature-measuring pin bodies is arranged by extrusion between the pressure-sensing component and the housing.

[0006] Furthermore, the pressure-resistant protection ring includes an inner pressure-resistant protection ring and an outer pressure-resistant protection ring. The inner pressure-resistant protection ring and the outer pressure-resistant protection ring arranged inside and outside form a double-layer pressure-resistant protection structure for protecting the temperature-measuring pin bodies.

[0007] Furthermore, the inner pressure-resistant protection ring is an O-ring.

[0008] Furthermore, the outer pressure-resistant protection ring is a TPEE back ring.

[0009] Furthermore, it includes an NTC positioning part corresponding to the NTC thermistor. The NTC thermistor is fixedly assembled relative to the pressure-sensing component through the NTC positioning part, so that the NTC thermistor extends out from the threaded mounting port of the housing, and the lead of the NTC thermistor is connected to the temperature-measuring pin body.

[0010] Furthermore, an external sealing ring is arranged at the root of the threaded mounting port of the housing.

[0011] Furthermore, it includes a circuit board, and the electrical connector is connected to the pressure-sensitive component through the circuit board.

[0012] Beneficial effects: The present utility model uses a five-pin ceramic capacitor as the pressure-sensitive component. Among them, the two pins for temperature measurement are designed with a through-type structure, and a voltage-resistant protection ring with a double-layer voltage-resistant protection structure is set to improve the voltage-resistant ability of the temperature and pressure sensor. The T90 temperature response time is within 5S, the production efficiency is significantly improved, the yield is improved, the voltage-resistant ability of the product is increased to more than 5MPa, and the use safety and service life are improved. Description of the Drawings

[0013] Figure 1 It is a semi-sectional structural schematic diagram of the temperature and pressure sensor of the present utility model;

[0014] Figure 2 is Figure 1 a structural enlarged schematic diagram of area B in Detailed Embodiments

[0015] The present utility model will be further described below with reference to the drawings.

[0016] As Figure 1 shown, a temperature and pressure sensor for a new refrigerant includes a housing 1 with a built-in pressure-sensitive component 2, an electrical connector 3 connected to the pressure-sensitive component 2 is externally connected to the housing 1, and an NTC thermistor 4 connected to the pressure-sensitive component 2 is built in the housing 1; the pressure-sensitive component 2 is a five-pin ceramic capacitor, and two of the five pins of the ceramic capacitor are temperature measurement pin bodies 21 that penetrate through the ceramic capacitor body and are connected to the NTC thermistor 4. A voltage-resistant protection ring 5 surrounding and enclosing the temperature measurement pin body 21 is arranged in a squeezing manner between the pressure-sensitive component 2 and the housing 1. More specifically, as Figure 2 shown, the voltage-resistant protection ring 5 includes an inner voltage-resistant protection ring 51 and an outer voltage-resistant protection ring 52. The inner voltage-resistant protection ring 51 and the outer voltage-resistant protection ring 52 arranged inside and outside form a double-layer voltage-resistant protection structure for protecting the temperature measurement pin body 21. The present utility model uses a five-pin ceramic capacitor as the pressure-sensitive component 2. Among them, the two pins for temperature measurement are designed with a through-type structure, and the voltage-resistant protection ring 5 with a double-layer voltage-resistant protection structure is set to improve the voltage-resistant ability of the temperature and pressure sensor. The T90 temperature response time is within 5S, the production efficiency is significantly improved, the yield is improved, the voltage-resistant ability of the product is increased to more than 5MPa, and the use safety and service life are improved.

[0017] Compared with the single-layer protection structure, the double-layer voltage-resistant protection structure design of the present utility model further improves the voltage-resistant ability of the temperature and pressure sensor and eliminates the risk of pressure durability. Among them, the inner voltage-resistant protection ring 51 is an O-ring. The outer voltage-resistant protection ring 52 is a TPEE back ring, that is, a back ring structure made of thermoplastic polyester elastomer material, which has the advantages of good elasticity and durability.

[0018] As Figure 1 shown, the utility model includes an NTC positioning member 8 corresponding to the NTC thermistor 4. The NTC thermistor 4 is fixedly assembled relative to the pressure sensing component 2 through the NTC positioning member 8, so that the NTC thermistor 4 extends out from the threaded mounting port 10 of the housing 1. The lead of the NTC thermistor 4 is connected to the temperature measuring needle body 21, and the assembly of each component of the temperature and pressure sensor is more convenient.

[0019] The threaded mounting port 10 of the housing 1 also needs to be sealed and protected. Therefore, an external sealing ring 6 is provided at the root of the threaded mounting port 10 of the housing 1.

[0020] The utility model includes a circuit board 7, and the electrical connector 3 is connected to the pressure sensing component 2 through the circuit board 7.

[0021] The above are only the preferred embodiments of the utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A temperature and pressure sensor for a new refrigerant, comprising a housing (1) with a built-in pressure sensing component (2), an electrical connector (3) connected to the pressure sensing component (2) externally connected to the housing (1), and an NTC thermistor (4) connected to the pressure sensing component (2) built in the housing (1); It is characterized in that: The pressure sensing component (2) is a five-pin ceramic capacitor. Two of the five pins of the five-pin ceramic capacitor are temperature measuring pin bodies (21) that penetrate the ceramic capacitor body and are connected to the NTC thermistor (4). A pressure-resistant protective ring (5) surrounding the temperature measuring pin body (21) is arranged in a squeezing manner between the pressure sensing component (2) and the housing (1).

2. The temperature and pressure sensor for a new refrigerant according to claim 1, wherein: The pressure-resistant protective ring (5) includes an inner pressure-resistant protective ring (51) and an outer pressure-resistant protective ring (52). The inner pressure-resistant protective ring (51) and the outer pressure-resistant protective ring (52) arranged inside and outside form a double-layer pressure-resistant protective structure for protecting the temperature measuring pin body (21).

3. The temperature and pressure sensor for a new refrigerant according to claim 2, wherein: The inner pressure-resistant protective ring (51) is an O-ring.

4. The temperature and pressure sensor for a new refrigerant according to claim 2, characterized in that: The outer pressure-resistant protective ring (52) is a TPEE back ring.

5. A temperature and pressure sensor for a new refrigerant according to claim 2, characterized in that: It includes an NTC positioning member (8) corresponding to the NTC thermistor (4). The NTC thermistor (4) is fixedly assembled relative to the pressure sensing component (2) through the NTC positioning member (8), so that the NTC thermistor (4) extends out from the threaded mounting port (10) of the housing (1), and the lead of the NTC thermistor (4) is connected to the temperature measuring pin body (21).

6. The temperature and pressure sensor for a new refrigerant according to claim 5, wherein: An external sealing ring (6) is provided at the root of the threaded mounting port (10) of the housing (1).

7. A temperature and pressure sensor for a new refrigerant according to claim 1, characterized in that: It includes a circuit board (7). The electrical connector (3) is connected to the pressure sensing component (2) through the circuit board (7).

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