Temperature and pressure sensor

Abstract

The utility model relates to a temperature and pressure sensor, which comprises a shell, a temperature detection module, a pressure detection module and an output terminal electrically connected with the temperature detection module and the pressure detection module, the pressure detection module is positioned on the side of the temperature detection module, and the temperature detection module is connected with a temperature sensing probe extending into a medium flow channel. A butt joint plane is formed on the side, close to the medium flow channel, of the shell, a pressure sensing cavity communicated with the pressure detection module is formed in the butt joint plane, a second sealing ring is arranged in the pressure sensing cavity, and one side of the second sealing ring abuts against the pressure detection module. The temperature and pressure sensor is electrically connected with the pile-up valve conveniently and stably.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of temperature and pressure detection, especially to a temperature and pressure sensor. BACKGROUND

[0002] Temperature and pressure sensors are widely used in integrated valves in the fields of automobiles, aerospace, mechanical equipment, etc., for real-time detection of temperature and pressure changes to ensure the safety and reliability of system operation. With the development of technology, the demand for temperature and pressure sensors is gradually increasing, and the requirements for their precision, reliability and service life are also becoming higher and higher, prompting the continuous improvement and perfection of related technologies.

[0003] Currently, temperature and pressure sensors applied in integrated valves usually need to be placed in a box and be guaranteed not to be affected by environmental factors through sealing measures. The temperature sensing probe of the temperature and pressure sensor and the pressure inlet channel extend into the medium flow channel of the integrated valve, so that the temperature sensing probe cooperates with the temperature detection module to output a temperature signal and the pressure inlet channel cooperates with the pressure detection module to output a pressure signal. The temperature detection module and the pressure detection module are stacked, and the temperature detection module or the pressure detection module is connected with the output terminal through a spring piece. There is a need for a more convenient and stable temperature and pressure sensor for electrical connection with the integrated valve. SUMMARY

[0004] In order to facilitate and stabilize the electrical connection between the temperature and pressure sensor and the integrated valve, the present application provides a temperature and pressure sensor.

[0005] The decorative wallboard splicing structure provided by the present application adopts the following technical scheme:

[0006] A temperature and pressure sensor, comprising a shell, a temperature detection module, a pressure detection module, and an output terminal electrically connected with the temperature detection module and the pressure detection module, the pressure detection module is located on the side of the temperature detection module, the temperature detection module is connected with a temperature sensing probe extending into the medium flow channel, the shell is formed with a butt joint plane on the side close to the medium flow channel, the butt joint plane is provided with a pressure sensing cavity in communication with the pressure detection module, a second sealing ring is arranged in the pressure sensing cavity, and the second sealing ring is in abutment with the pressure detection module on one side.

[0007] By adopting the above technical scheme, the shell of the temperature and pressure sensor itself is directly sealed, the sealing performance is better, the pressure detection module and the temperature detection module are arranged side by side, although the volume in the width direction is increased, the overall structure is simpler, the cost and process cost are lower, and the butt joint with the interface of the integrated valve can be better matched; the second sealing ring ensures the sealing of the medium, thereby ensuring the butt joint of the temperature and pressure sensor as a whole with the integrated valve.

[0008] Optionally, a protective shell is arranged outside the temperature sensing probe, and the protective shell is connected with the shell.

[0009] By adopting the technical scheme, the protective shell provides better protection for the temperature sensing probe and reduces the possibility of damage to the temperature sensing probe.

[0010] Optionally, the shell is integrally formed with a connecting head that is connected to the protective shell, the connecting head is formed with a clamping block on the outside, and the protective shell is formed with a clamping groove that is rotatably clamped with the clamping block at one end close to the shell.

[0011] By adopting the technical scheme, the connecting head plays a certain positioning role, the clamping block is inserted into the clamping groove and then rotated to complete the connection when the protective shell is installed, and the protective shell is more convenient to disassemble and assemble.

[0012] Optionally, a step is formed on the outside of the protective shell, and a third sealing ring is sleeved on the step.

[0013] By adopting the technical scheme, the third sealing ring also seals the medium.

[0014] Optionally, the shell includes an upper shell and a lower shell, and the upper shell and the lower shell are clamped and arranged.

[0015] By adopting the technical scheme, the shell is convenient to disassemble and assemble as a whole.

[0016] Optionally, the lower shell is formed with a placing groove close to one side of the upper shell, and a fourth sealing ring is arranged in the placing groove.

[0017] By adopting the technical scheme, the fourth sealing ring has an environmental sealing effect, and ensures the sealing performance of the entire shell.

[0018] Optionally, the lower shell is formed with a positioning groove on the side, and the upper shell is formed with a positioning block that is inserted and matched with the positioning groove.

[0019] By adopting the technical scheme, the positioning block and the positioning groove facilitate the mutual positioning of the upper shell and the lower shell, facilitate installation, and ensure that the connection of the upper shell and the lower shell is more stable.

[0020] Optionally, the shell is formed with a mounting hole in the height direction.

[0021] By adopting the technical scheme, the shell is convenient to install with the integrated valve.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. The pressure detection module and the temperature detection module are arranged side by side, and are directly sealed by the shell of the temperature and pressure sensor, which has better sealing performance, lower cost and lower process cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application.

[0025] Figure 2 This is a cross-sectional view of a temperature and pressure sensor.

[0026] Figure 3 This is a schematic diagram of the structure of the temperature and pressure sensor and the medium flow channel in the embodiment of this application.

[0027] Figure 4 This is a schematic diagram of the structure of the temperature and pressure sensor docking plane side highlighted in this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Upper housing; 111. Groove; 112. Positioning block; 12. Lower housing; 121. Flange; 122. Positioning groove; 13. Mounting hole; 14. Fourth sealing ring; 15. Connector; 16. Butt joint; 151. Snap-fit ​​block; 2. Output terminal; 3. Temperature detection module; 4. Pressure detection module; 5. Temperature sensor; 6. Protective shell; 61. Snap-fit ​​groove; 62. Step; 63. Third sealing ring; 7. First sealing ring; 8. Second sealing ring; 9. Medium flow channel. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0030] This application discloses a temperature and pressure sensor, referring to... Figure 1 and Figure 2 The system includes a housing 1, a temperature detection module 3, a pressure detection module 4, and an output terminal 2. The temperature detection module 3 and the pressure detection module 4 are electrically connected to the output terminal 2. The pressure detection module 4 is located to the side of the temperature detection module 3. The temperature detection module 3 is connected to a temperature sensing probe 5 extending into the medium flow channel 9, which detects the medium temperature. A mating plane 16 is formed on the side of the housing 1 near the medium flow channel 9. A pressure sensing chamber communicating with the pressure detection module 4 is opened on the mating plane 16. A second sealing ring 8 is provided in the pressure sensing chamber. The mating plane 16 mates with the plane on the integrated valve. One side of the second sealing ring 8 abuts against the pressure detection module 4, and the other side abuts against the plane of the integrated valve. A first sealing ring 7 abuts between the mating plane 16 and the plane of the integrated valve. The first sealing ring 7 surrounds the temperature sensing probe 5 and the pressure sensing chamber (see reference). Figure 3 The housing 1 has mounting holes 13 along its height for easy installation of the temperature sensor. The output terminal 2 can be a pin or a wire harness for interface connection to an integrated valve.

[0031] Reference Figure 1 and Figure 2The housing 1 includes an upper housing 11 and a lower housing 12, which are snap-fitted together. A placement groove is formed on the side of the lower housing 12 near the upper housing 11, and a fourth sealing ring 14 is disposed within the groove. The fourth sealing ring 14 abuts against both the upper housing 11 and the lower housing 12. The lower housing 12 may have a flange 121, and the upper housing 11 may have a matching groove 111 at a corresponding position. The connection is achieved through the interlocking of the two parts. A positioning groove 122 is formed on the side of the lower housing 12, and a positioning block 112 is formed on the upper housing 11 that engages with the positioning groove 122. The positioning groove 122 and the positioning block 112 further facilitate the mutual positioning of the upper housing 11 and the lower housing 12, improving the accuracy and stability of the installation.

[0032] Reference Figure 2 , Figure 3 and Figure 4 The temperature sensor 5 is protected by a protective shell 6, which is integrally connected to or snapped into the housing 1. The housing 1 is integrally formed with a connector 15, which is inserted into the protective shell 6. A snap-fit ​​block 151 is formed on the outer side of the connector 15. A snap-fit ​​groove 61 is formed on one end of the protective shell 6 near the housing 1. The snap-fit ​​groove 61 is L-shaped and open on the side closest to the housing 1. The snap-fit ​​block 151 enters the snap-fit ​​groove 61 from the opening and rotates to snap into the groove. This design not only makes the connection between the protective shell 6 and the housing 1 more secure but also optimizes the installation process. A step 62 is formed on the outer side of the protective shell 6, located on the side of the snap-fit ​​groove 61 away from the housing 1. A third sealing ring 63 is fitted at the step 62, increasing the protection of the temperature sensor 5. The design of the third sealing ring 63 further improves the sealing performance between the protective shell 6 and the housing 1, ensuring that the medium will not enter the protective shell 6 and contaminate the temperature sensor 5.

[0033] The implementation principle of a temperature and pressure sensor in this application embodiment is as follows: A temperature sensing probe 5 is inserted into the medium flow channel 9 to detect the temperature. The temperature sensing probe 5 is connected to the temperature detection module 3 via a lead wire. The temperature detection module is connected to the output terminal 2 via a spring contact. An integrated valve has a channel connecting the pressure sensing chamber and the medium flow channel 9. The medium reaches the pressure detection module 4 through the channel. The pressure detection module is connected to the output terminal 2 via a spring contact. The sensor is sealed by its housing 1, and a fourth sealing ring 14 is added for improved sealing performance. The pressure detection module 4 and the temperature detection module 3 are arranged side-by-side, increasing the internal space and allowing for a wider range of selectable temperature and pressure detection modules. The overall structure is simpler, and the cost of the sensor itself and its manufacturing process is lower.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A temperature and pressure sensor, comprising a housing (1), a temperature detection module (3), a pressure detection module (4), and an output terminal (2) electrically connected to the temperature detection module (3) and the pressure detection module (4), characterized in that: The pressure detection module (4) is located to the side of the temperature detection module (3). The temperature detection module (3) is connected to a temperature sensing probe (5) extending into the medium flow channel (9). The housing (1) has a mating plane (16) on the side near the medium flow channel (9). A pressure sensing cavity communicating with the pressure detection module (4) is opened on the mating plane (16). A second sealing ring (8) is provided in the pressure sensing cavity. One side of the second sealing ring (8) abuts against the pressure detection module (4).

2. The temperature and pressure sensor according to claim 1, characterized in that: The temperature sensor (5) is provided with a protective shell (6), which is connected to the housing (1).

3. The temperature and pressure sensor according to claim 2, characterized in that: The housing (1) is integrally formed with a connector (15) that mates with the protective housing (6). A snap-fit ​​block (151) is formed on the outside of the connector (15). The protective housing (6) has a snap-fit ​​groove (61) near the housing (1) that is rotatably snapped with the snap-fit ​​block (151).

4. The temperature and pressure sensor according to claim 2, characterized in that: The protective shell (6) has a step (62) formed on its outside, and a third sealing ring (63) is fitted at the step (62).

5. The temperature and pressure sensor according to claim 1, characterized in that: The housing (1) includes an upper housing (11) and a lower housing (12), which are snap-fitted together.

6. The temperature and pressure sensor according to claim 5, characterized in that: The lower housing (12) has a placement groove on the side near the upper housing (11), and a fourth sealing ring (14) is provided in the placement groove.

7. The temperature and pressure sensor according to claim 5, characterized in that: The lower housing (12) has a positioning groove (122) on its side, and the upper housing (11) has a positioning block (112) that is inserted into the positioning groove (122).

8. The temperature and pressure sensor according to claim 1, characterized in that: The housing (1) has mounting holes (13) along the height direction.

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