Novel pressure sensor

Abstract

A novel pressure sensor comprises a main body, an inner cavity is arranged in the main body, a connector connected with a quick-connection pipeline is arranged below the inner cavity, the connector is hollow, an electronic pressure measuring assembly is arranged on the inner cavity, the novel pressure sensor further comprises a fastener arranged above the inner cavity, and a detachable connecting part is arranged between the fastener and the main body. The fastener is fixed on the main body through the detachable connecting part, the electronic pressure measuring assembly is hermetically mounted on the inner cavity through the fastener, and the side pressure end surface of the electronic pressure measuring assembly faces the internal hollow space of the joint. The pressure sensor is screwed on the main body through the nut, after the nut is fixed on the main body, the electronic pressure measuring assembly can be installed on the inner cavity in a sealing mode, so that the electronic pressure measuring assembly can be installed and disassembled only by rotating the nut, the electronic pressure measuring assembly can be conveniently disassembled and assembled, the disassembling and assembling speed is high, and in addition, the assembling and disassembling efficiency is improved. The nut has strong bearing capacity and is not easy to damage when being pressed, so that the electronic pressure measuring assembly can be fixed more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure sensors, and particularly relates to a novel pressure sensor. Background Art

[0002] Chinese Patent Document No. CN221147931U disclosed a pressure sensor on June 14, 2024, which includes a main body and a pressure sensing component. The pressure sensing component is installed on the main body, and the main body is provided with a connection structure for quick insertion of a pipeline. The pipeline can be quickly inserted into the main body through the connection structure, and the external air pressure transmits the pressure to the pressure sensing component through the pipeline. This pressure sensor is fixed in the main body by a snap ring, which is troublesome to install, and the snap ring has poor pressure-bearing capacity and is easily damaged after being pressed, resulting in the inability to fix the pressure sensor.

[0003] Therefore, it is necessary to make further improvements. Content of the Utility Model

[0004] The purpose of the utility model is to provide a novel pressure sensor with simple structure, convenient installation, good pressure-bearing capacity, high accuracy of pressure detection and strong practicability, so as to overcome the deficiencies of the prior art.

[0005] A novel pressure sensor designed according to this purpose includes a main body. An inner cavity is arranged inside the main body. A joint for connecting a quick-connect pipeline is arranged below the inner cavity. The inside of the joint is hollow. An electronic pressure measuring component is arranged on the inner cavity. It is characterized in that: it further includes a fastener arranged above the inner cavity. A disassembly connection part is arranged between the fastener and the main body. The fastener is fixed on the main body through the disassembly connection part. The fastener seals and installs the electronic pressure measuring component on the inner cavity. The side pressure end face of the electronic pressure measuring component faces the internal hollow space of the joint.

[0006] The disassembly connection part includes an external thread arranged on the fastener and an internal thread arranged on the inner cavity. The external thread and the internal thread cooperate with each other to fix the fastener on the main body.

[0007] A sealing groove is arranged on the inner cavity. The electronic pressure measuring component is press-fitted between the fastener and the sealing groove.

[0008] The electronic pressure measuring component includes a first electronic pressure measuring element and an elastic seal. A sealing cavity is arranged on the inner cavity. The elastic seal is installed on the sealing cavity. The first electronic pressure measuring element is press-fitted between the fastener and the elastic seal.

[0009] The top of the elastic seal is provided with a protruding sealing edge. The sealing edge is installed on the sealing groove. The first electronic pressure measuring element is press-fitted between the fastener and the sealing edge.

[0010] A pressure - sensing cavity for storing a medium is formed between the first electronic pressure - measuring element and the elastic seal. When the elastic seal deforms, it squeezes the medium in the pressure - sensing cavity, and the medium transmits the pressure to the first electronic pressure - measuring element.

[0011] The medium is silicone oil.

[0012] The electronic pressure - measuring assembly includes a second electronic pressure - measuring element and a first sealing ring. The first sealing ring is installed in the sealing groove, and the second electronic pressure - measuring element is press - fitted between the fastener and the first sealing ring.

[0013] A ceramic chip for detecting pressure is provided on the second electronic pressure - measuring element.

[0014] The fastener is provided with a wire - passing hole, and the wires led out from the electronic pressure - measuring assembly pass through the wire - passing hole and extend outside the main body and are connected to the circuit control board.

[0015] It also includes several second sealing rings and a circlip. The several second sealing rings are arranged at intervals on the joint. One end of the quick - connect pipe is in close fit with the second sealing ring, and the quick - connect pipe is fixedly inserted on the joint through the circlip.

[0016] The pressure sensor of the present utility model is screwed onto the main body through a nut. After the nut is fixed on the main body, the electronic pressure - measuring assembly can be hermetically installed on the inner cavity. This enables the installation and disassembly of the electronic pressure - measuring assembly to be achieved only by rotating the nut, facilitating the disassembly and assembly of the electronic pressure - measuring assembly with a fast speed. In addition, the nut has a strong pressure - bearing capacity and is not easily damaged under pressure, so the electronic pressure - measuring assembly can be fixed more stably. Description of the Drawings

[0017] Figure 1 It is a cross - sectional view of the pressure sensor in the first embodiment of the present utility model.

[0018] Figure 2 It is a cross - sectional view of the pressure sensor in the second embodiment of the present utility model.

[0019] Figure 3 It is a schematic diagram of the overall structure of the pressure sensor in an embodiment of the present utility model.

[0020] Figure 4 It is a schematic diagram of the exploded structure of the pressure sensor in the first embodiment of the present utility model.

[0021] Figure 5 It is a schematic diagram of the exploded structure of the pressure sensor in the second embodiment of the present utility model.

[0022] Figure 6 It is a cross - sectional view of the main body in an embodiment of the present utility model.

[0023] Figure 7Schematic diagram of the exploded structure of a pressure sensor in an embodiment of the present utility model.

[0024] Figure 8 Schematic diagram of the principle of a coffee machine in an embodiment of the present utility model.

[0025] Figure 9 Schematic diagram of the principle of a water purifier in an embodiment of the present utility model. Detailed implementation manners

[0026] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] First embodiment:

[0028] Refer to Figure 1 , Figure 3 , Figure 4 and Figures 6 - 9 For this new type of pressure sensor, it includes a main body 1. There is an inner cavity 5 arranged inside the main body 1. Below the inner cavity 5, there is a joint 6 connected to a quick-connect pipe 17. The quick-connect pipe 17 is communicated with the pipeline of the pressure to be measured. The quick-connect pipe 17 is communicated with the inner cavity 5. The inside of the joint 6 is hollow. An electronic pressure measurement component is arranged on the inner cavity 5. It also includes a fastener 2 arranged above the inner cavity 5. A detachable connection part is arranged between the fastener 2 and the main body 1. The fastener 2 is fixed on the main body 1 through the detachable connection part. The fastener 2 seals and installs the electronic pressure measurement component on the inner cavity 5. The side pressure end face of the electronic pressure measurement component faces the inner hollow space of the joint 6.

[0029] The detachable connection part includes an external thread 3 arranged on the fastener 2 and an internal thread 4 arranged on the top of the inner cavity 5. The external thread 3 and the internal thread 4 cooperate with each other to fix the fastener 2 on the top of the main body 1. The fastener 2 is a nut.

[0030] A sealing groove 7 is arranged on the inner cavity 5. The electronic pressure measurement component is press-fitted between the fastener 2 and the sealing groove 7; only by removing the nut, the electronic pressure measurement component can be installed on the inner cavity 5 or taken out from the inner cavity 5.

[0031] The electronic pressure measurement component includes a first electronic pressure measurement element 8 and an elastic seal 9. A sealing cavity 10 is arranged on the inner cavity 5. The elastic seal 9 is installed on the sealing cavity 10. The first electronic pressure measurement element 8 is press-fitted between the fastener 2 and the elastic seal 9.

[0032] The top of the elastic seal 9 is provided with a protruding sealing edge 11. The lower part of the sealing edge 11 is installed on the sealing groove 7. The first electronic pressure measurement element 8 is press-fitted between the fastener 2 and the sealing edge 11.

[0033] A pressure sensing cavity 12 for storing a medium is formed between the first electronic pressure measuring element 8 and the elastic seal 9. When the elastic seal 9 deforms, it squeezes the medium in the pressure sensing cavity 12, and the medium transfers the pressure to the first electronic pressure measuring element 8.

[0034] The medium is silicone oil, which can make the pressure value detected by the first electronic pressure measuring element 8 more accurate and improve the sensitivity and stability of the first electronic pressure measuring element 8.

[0035] When the elastic seal 9 bears an external pressure, the elastic seal 9 undergoes elastic deformation, squeezes the medium in the pressure sensing cavity 12 inward, and transfers the pressure to the first electronic pressure measuring element 8 through the medium. The first electronic pressure measuring element 8 can convert the external pressure signal into an electrical signal and send the electrical signal to the circuit control board.

[0036] The fastener 2 is provided with a wire passing hole 15, and the wires led out from the electronic pressure measuring assembly (the first electronic pressure measuring element 8 or the second electronic pressure measuring element 13) pass through the wire passing hole 15 and extend out of the main body 1 and are connected to the circuit control board.

[0037] It also includes a plurality of second sealing rings 18 and a snap ring 19. The plurality of second sealing rings 18 are arranged at intervals on the joint 6. One end of the quick-connect pipe 17 is in close fit with the second sealing ring 18, and the quick-connect pipe 17 is fixedly inserted on the joint 6 through the snap ring 19.

[0038] The quick-connect pipe 17 is provided with a step 20, the snap ring 19 is provided with a support rod 21, and the main body 1 is provided with an opening 16. When the quick-connect pipe 17 is inserted on the joint 6, after the snap ring 19 passes through the opening 16, the support rod 21 supports the step 20 to realize the fixed installation of the quick-connect pipe 17 on the joint 6.

[0039] When the external air pressure or water pressure is transmitted to the inner cavity 5 through the quick-connect pipe 17, the elastic seal 9 in the inner cavity 5 undergoes elastic deformation.

[0040] This new type of pressure sensor can be widely used in household appliances, automatic detection equipment and industrial equipment, such as but not limited to the following products: coffee machines, beverage machines, water purifiers, steam generating equipment, gas or liquid pressure detection equipment, meteorological detection equipment, beverage production equipment, and other industrial automation equipment with gas or liquid pressure detection.

[0041] When this new type of pressure sensor is applied to a coffee machine, the coffee machine includes a water tank 22, a water pump 23, a heater 24, and a steam output device 25. The water tank 22, the water pump 23, the heater 24, and the steam output device 25 are sequentially connected through a pipeline 26. The pressure sensor is arranged on the pipeline 26 between the heater 24 and the steam output device 25. A quick-connect pipe 17 is connected to the pipeline 26 between the heater 24 and the steam output device 25, so that the pressure sensor is used to detect the air pressure of this pipeline 26. The air pressure of this pipeline 26 is transported to the inner cavity 5 through the quick-connect pipe 17, and then the pressure is detected by an electronic pressure measurement component.

[0042] When this new type of pressure sensor is applied to a water purifier, the water purifier includes a box body 27, a water inlet pipe 28, a water outlet pipe 29, and a wastewater pipe 30. An RO membrane 31 is arranged inside the box body 27. The water inlet pipe 28 is connected to the water inlet of the box body 27, the water outlet pipe 29 is connected to the water outlet of the box body 27, and the wastewater pipe 30 is connected to the wastewater outlet of the box body 27. The water purifier has a backwashing function. When the water purifier is backwashing, the backwashing valve is opened, and high-speed water flow enters the box body 27 and reversely passes through the RO membrane 31 to wash the RO membrane 31. The sewage formed during washing is discharged through the wastewater pipe 30. The pressure sensor is arranged on the water inlet pipe 28 and is used to detect the water pressure of the water inlet pipe 28. The quick-connect pipe 17 is connected to the water inlet pipe 28. The water pressure of the water inlet pipe 28 is transported to the inner cavity 5 through the quick-connect pipe 17, and then the pressure is detected by an electronic pressure measurement component. When the detected water pressure is relatively high, it indicates that there is more accumulation of impurities on the RO membrane 31 and the backwashing function needs to be turned on.

[0043] Second Embodiment:

[0044] See Figure 2 、 Figure 3 、 Figure 5 and Figure 6 This new type of pressure sensor is different from the first embodiment in that:

[0045] The electronic pressure measurement component includes a second electronic pressure measurement element 13 and a first sealing ring 14. The first sealing ring 14 is installed on the sealing groove 7, and the second electronic pressure measurement element 13 is press-fitted between the fastener 2 and the first sealing ring 14.

[0046] A ceramic chip for detecting pressure is arranged on the second electronic pressure measurement element 13.

[0047] When the external air pressure or water pressure is transported to the inner cavity 5 through the quick-connect pipe 17, the pressure directly acts on the ceramic chip. The ceramic chip can convert the external pressure signal into an electrical signal and send the electrical signal to the circuit control board.

[0048] Other parts not described are the same as those in the first embodiment and will not be analyzed and described here.

[0049] The above is the preferred embodiment of the present utility model, which shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A novel pressure sensor, comprising a main body (1), wherein an inner cavity (5) is provided in the main body (1), a joint (6) connected to a quick-connect pipe (17) is provided below the inner cavity (5), the joint (6) is hollow inside, and an electronic pressure measuring component is provided on the inner cavity (5), characterized in that: It also includes a fastener (2) arranged above the inner cavity (5), a detachable connection portion being arranged between the fastener (2) and the main body (1), the fastener (2) being fixed to the main body (1) via the detachable connection portion, the fastener (2) sealingly mounting the electronic pressure measuring component on the inner cavity (5), the side pressure end face of the electronic pressure measuring component facing the internal hollow space of the joint (6).

2. The novel pressure sensor according to claim 1 is characterized in that: The disassembly connection portion comprises an external thread (3) provided on the fastener (2) and an internal thread (4) provided on the inner cavity (5); the external thread (3) and the internal thread (4) cooperate with each other to fix the fastener (2) on the main body (1).

3. The novel pressure sensor according to claim 2 is characterized in that: A sealing groove (7) is provided on the inner cavity (5), and the electronic pressure measuring component is press-fitted between the fastener (2) and the sealing groove (7).

4. The novel pressure sensor according to claim 3 is characterized in that: The electronic pressure measuring assembly comprises a first electronic pressure measuring element (8) and an elastic sealing member (9); a sealing cavity (10) is provided on the inner cavity (5); the elastic sealing member (9) is mounted on the sealing cavity (10); and the first electronic pressure measuring element (8) is press-fitted between the fastener (2) and the elastic sealing member (9).

5. The novel pressure sensor according to claim 4 is characterized in that: A protruding sealing edge (11) is provided on the top of the elastic sealing member (9), the sealing edge (11) is mounted on the sealing groove (7), and the first electronic pressure measuring element (8) is press-fitted between the fastener (2) and the sealing edge (11).

6. The novel pressure sensor according to claim 5 is characterized in that: A pressure sensing chamber (12) for storing a medium is formed between the first electronic pressure measuring element (8) and the elastic sealing element (9); when the elastic sealing element (9) is deformed, it squeezes the medium in the pressure sensing chamber (12), and the medium transmits the pressure to the first electronic pressure measuring element (8).

7. The novel pressure sensor according to claim 3 is characterized in that: The electronic pressure measuring assembly comprises a second electronic pressure measuring element (13) and a first sealing ring (14), wherein the first sealing ring (14) is mounted on the sealing groove (7), and the second electronic pressure measuring element (13) is press-fitted between the fastener (2) and the first sealing ring (14).

8. The novel pressure sensor according to claim 7 is characterized in that: The second electronic pressure measuring element (13) is provided with a ceramic chip for detecting pressure.

9. The novel pressure sensor according to claim 1 is characterized in that: The fastener (2) is provided with a threading hole (15), and the wires leading out of the electronic pressure measuring component pass through the threading hole (15) to pass out of the main body (1) and are connected to the circuit control board.

10. The novel pressure sensor according to claim 1 is characterized in that: It also includes a plurality of second sealing rings (18) and a retaining spring (19). The plurality of second sealing rings (18) are arranged at intervals on the joint (6). One end of the quick-connect pipe (17) is tightly matched with the second sealing ring (18). The quick-connect pipe (17) is fixedly inserted into the joint (6) by the retaining spring (19).

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