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CN-122016783-A - Refrigerant sensor and photodetector

CN122016783ACN 122016783 ACN122016783 ACN 122016783ACN-122016783-A

Abstract

The refrigerant sensor provided by the application comprises a light source, a light detector and a circuit board. The photodetector comprises a light detection part, an integrated circuit chip, a switching part and a packaging part. The light detection part can generate an electric signal under the irradiation of light, the electric signal can change along with the change of the concentration of the refrigerant, the integrated circuit chip is electrically connected with the light detection part and can process the electric signal, the light detection part and the integrated circuit chip are respectively electrically connected to the switching part, the switching part is electrically connected with the circuit board, and the light detection part, the integrated circuit chip and the switching part are all accommodated in the packaging part. The refrigerant sensor and the photodetector provided by the application have the advantages that the light detection part, the integrated circuit chip and the switching part are all accommodated in the packaging part, so that the influence of the outside on the electric signal processing is reduced.

Inventors

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Assignees

  • 浙江三花智能控制股份有限公司

Dates

Publication Date
20260512
Application Date
20250226
Priority Date
20241111

Claims (11)

  1. 1. A refrigerant sensor, which comprises a sensor body, characterized by comprising the following steps: A light source (10), the light source (10) being capable of emitting light; A light detector (100), said light detector (100) being capable of receiving said light emitted by said light source (10), and A circuit board (110), the light source (10) and the light detector (100) are electrically connected with the circuit board, Wherein the light detector (100) comprises: A light detection unit (1), wherein the light detection unit (1) is capable of generating an electrical signal under irradiation of the light, and the electrical signal is capable of changing with the change of the concentration of the refrigerant; An integrated circuit chip (3), wherein the integrated circuit chip (3) is electrically connected with the light detection part (1), and the integrated circuit chip (3) can process the electric signal; A transfer part (7), wherein the light detection part (1) and the integrated circuit chip (3) are respectively and electrically connected to the transfer part (7), the transfer part (7) is electrically connected with the circuit board (110), and And the packaging part (4), the light detection part (1), the integrated circuit chip (3) and the switching part (7) are all accommodated in the packaging part (4).
  2. 2. The refrigerant sensor according to claim 1, characterized in that it comprises a conditioning module electrically connected to the light detection portion (1), said conditioning module being able to condition the electrical signal; the conditioning module comprises a first conditioning part and a second conditioning part, and at least one of the first conditioning part and the second conditioning part is integrated with the integrated circuit chip.
  3. 3. The refrigerant sensor according to claim 1 or 2, wherein the light detection portion (1) includes a first light detection portion (11) and a second light detection portion (12), the first light detection portion (11) and the second light detection portion (12) being electrically connected to the integrated circuit chip (3), respectively; The photodetector (100) comprises a light filtering part (2), the light filtering part (2) comprises a first light filtering part (21) and a second light filtering part (22), the first light filtering part (21) can be used for selecting light in a first wavelength range, the second light filtering part (22) can be used for selecting light in a second wavelength range, the first wavelength range is not overlapped with the second wavelength range, the first light detecting part (11) is at least partially aligned with the first light filtering part (21), and the second light detecting part (12) is at least partially aligned with the second light filtering part (22).
  4. 4. A refrigerant sensor as claimed in claim 3, characterized in that said filter portion (2) is arranged at said adapter portion (7).
  5. 5. The refrigerant sensor as set forth in claim 4, wherein said switching portion (7) comprises a main body portion (71) and an electrical switching portion (72), said electrical switching portion (72) comprising a conductive material, said electrical switching portion (72) being disposed through said main body portion (71), said electrical switching portion (72) comprising a first switching end (721) and a second switching end (722), said first switching end (721) and said second switching end (722) being located on either side of said main body portion (71) along a thickness direction of said switching portion (7), respectively, said first switching end (721) being electrically connected to said light detecting portion (1) or said integrated circuit chip (3), said second switching end (722) being electrically connected to said circuit board (110); The main body (71) is made of glass, the filter film is arranged on the surface of the main body (71), and the filter part (2) comprises the filter film.
  6. 6. The refrigerant sensor according to claim 4 or 5, characterized in that the light detector (100) comprises a light transmitting portion (6), the light transmitting portion (6) being connected with the encapsulation portion (4); The light transmission part (6) comprises a first light transmission part (61) and a second light transmission part (62), the first light detection part (11) and the first light transmission part (61) are respectively positioned at two sides of the first light filtering part (21) along the height direction of the light detector (100), at least part of the first light detection part (11) and at least part of the first light transmission part (61) are respectively aligned with the first light filtering part (21), the second light detection part (12) and the second light transmission part (62) are respectively positioned at two sides of the second light filtering part (22) along the height direction of the light detector (100), and at least part of the second light detection part (12) and at least part of the second light transmission part (62) are respectively aligned with the second light filtering part (22).
  7. 7. The refrigerant sensor as set forth in claim 6, characterized in that the light detector (100) has a cavity (400), and the light detection portion (1), the integrated circuit chip (3) and the adapter portion (7) are all located in the cavity; The side wall of the packaging part, the first light-transmitting part (61) and the second light-transmitting part (62) are at least partially cavity walls corresponding to the accommodating cavity.
  8. 8. A refrigerant sensor as claimed in claim 3, characterized in that the filter part (2) is connected to the encapsulation part (4), the encapsulation part (4) having a first opening (401) and a second opening (402), the first filter part (21) covering the first opening (401) and the second filter part (22) covering the second opening (402).
  9. 9. The refrigerant sensor as set forth in claim 8, characterized in that the light detector (100) has a cavity (400) in which the light detection portion (1), the integrated circuit chip (3) and the adapter portion (7) are located; the side wall of the packaging part, the first light filtering part (21) and the first light filtering part (21) are at least partially cavity walls corresponding to the accommodating cavity.
  10. 10. The refrigerant sensor as claimed in any one of claims 1,2, 4, 5 and 7-9, characterized in that the encapsulation (4) comprises a connection portion (5), which connection portion (5) is located at least partially between the adapter portion (7) and the circuit board (110) in the height direction of the light detector (100); the connecting part (5) comprises a base part (53) and a conductive part (54), the conductive part (54) penetrates through the base part (53), the conductive part (54) comprises a first conductive end part (541) and a second conductive end part (542), the first conductive end part (541) is electrically connected with the switching part (7), and the second conductive end part (542) is electrically connected with the circuit board (110); The base portion (53) is an insulating member or a metal member.
  11. 11. A light detector, comprising: A light detection unit (1), wherein the light detection unit (1) is capable of generating an electrical signal under irradiation of the light, and the electrical signal is capable of changing with the change of the concentration of the refrigerant; An integrated circuit chip (3), wherein the integrated circuit chip (3) is electrically connected with the light detection part (1), and the integrated circuit chip (3) can process the electric signal; A transfer part (7), wherein the light detection part (1) and the integrated circuit chip (3) are respectively and electrically connected to the transfer part (7), the transfer part (7) is electrically connected with the circuit board (110), and And the packaging part (4), the light detection part (1), the integrated circuit chip (3) and the switching part (7) are all accommodated in the packaging part (4).

Description

Refrigerant sensor and photodetector Technical Field The application relates to the technical field of sensing, in particular to a refrigerant sensor and a light detector. Background In the related art, the refrigerant sensor comprises a light source, a light detector and a circuit board assembly, wherein the light detector comprises a light detection part, and when light emitted by the light source irradiates the light detection part, the light detection part can generate change and output an electric signal. The circuit board assembly comprises a circuit board and a plurality of electronic components arranged on the circuit board, the optical detector is electrically connected with the circuit board, and the circuit board assembly processes, such as conditioning, storing, calculating and the like, the electric signals output by the optical detector, so that the sensor can detect the gas. In the related art, an electronic device for processing an electric signal in a refrigerant sensor is mounted on a circuit board, the circuit board is positioned in a cavity communicated with the outside of the refrigerant sensor, the outside of the refrigerant sensor easily influences the processing of the electric signal, and meanwhile, the electric connection between elements needs to be considered. Disclosure of Invention The application provides a miniaturized refrigerant sensor. The refrigerant sensor provided by the first aspect of the application comprises a light source, a light detector and a circuit board, wherein the light source can emit light, the light detector can receive the light emitted by the light source, and the light source and the light detector are electrically connected with the circuit board. Wherein the light detector comprises: A light detection unit that generates an electrical signal that can be changed by a change in the concentration of the refrigerant when the light is irradiated; An integrated circuit chip electrically connected to the light detection section, the integrated circuit chip being capable of processing the electrical signal; the light detection part and the integrated circuit chip are respectively and electrically connected to the switching part, the switching part is electrically connected with the circuit board, and And the light detection part, the integrated circuit chip and the switching part are all accommodated in the packaging part. The refrigerant sensor provided by the first aspect of the application comprises a light detector, wherein the light detector comprises a light detection part, an integrated circuit chip and a switching part, the integrated circuit chip is electrically connected with the light detection part and can process electric signals of the light detection part, the light detection part and the integrated circuit chip are respectively electrically connected to the switching part, and the light detection part, the integrated circuit chip and the switching part are all accommodated in the packaging part, so that the influence of the outside of the refrigerant sensor on the electric signal processing is reduced. The photodetector provided in the second aspect of the present application comprises: A light detection unit that generates an electrical signal that can be changed by a change in the concentration of the refrigerant when the light is irradiated; An integrated circuit chip electrically connected to the light detection section, the integrated circuit chip being capable of processing the electrical signal; the light detection part and the integrated circuit chip are respectively and electrically connected to the switching part, the switching part is electrically connected with the circuit board, and And the light detection part, the integrated circuit chip and the switching part are all accommodated in the packaging part. The optical detector provided by the second aspect of the application comprises a light detection part, an integrated circuit chip and a switching part, wherein the integrated circuit chip is electrically connected with the light detection part and can process an electric signal of the light detection part, the light detection part and the integrated circuit chip are respectively electrically connected to the switching part, and the light detection part, the integrated circuit chip and the switching part are all accommodated in the packaging part, so that the influence of the outside of the optical detector on the electric signal processing is reduced. Drawings FIG. 1 is a schematic perspective view of an optical gas sensor according to an embodiment of the present application; FIG. 2 is a schematic cross-sectional view of a first embodiment of a light detector included in the optical gas sensor of FIG. 1; FIG. 3 is a schematic cross-sectional view of another angle of the photodetector shown in FIG. 2; FIG. 4 is a schematic cross-sectional view of a second embodiment of a photodetector included in the optical gas sensor of FIG.