VACUUM ULTRAVIOLET PHOTOIONIZATION AND CHEMICAL IONIZATION COMBINED ION SOURCE FOR MASS SPECTROMETRY

This invention relates to the field of mass spectrometry, and more specifically to a vacuum ultraviolet photoionization and chemical ionization combined ion source, which consists of a vacuum ultraviolet light source and an ion source chamber. An ion acceleration electrode, an ion repulsion electrode, an ion extraction electrode, and a differential interface electrode positioned inside the ion source chamber are arranged along the exit direction of the vacuum ultraviolet light beam in sequence and spaced, coaxial, and parallel from each other. The ion acceleration electrode, the ion repulsion electrode, the ion extraction electrode, and the differential interface electrode are all plate structures with central through holes. The vacuum ultraviolet light beam passes through the central through holes of the electrodes along the axial direction. By utilizing a single vacuum ultraviolet light source, the ion source is feasible to switch between two ionization modes, vacuum ultraviolet photoionization (VUV PI) and chemical ionization (CI), under suitable ion source pressure, thus greatly expanding the range of detectable samples. 1. A vacuum ultraviolet photoionization and chemical ionization combined ion source for mass spectrometry comprising:a vacuum ultraviolet light source and an ion source chamber, said ion source chamber including a gas vent on its side wall, wherein a vacuum gauge is connected to a through hole on the side wall of said ion source chamber by means of a vacuum line;an ion acceleration electrode, an ion repulsion electrode, an ion extraction electrode, and a differential interface electrode positioned inside said ion source chamber, wherein said vacuum ultraviolet light source emits vacuum ultraviolet light beam inside said ion source chamber, wherein said ion acceleration electrode, said ion repulsion electrode, said ion extraction electrode, and said differential interface electrode are arranged along the exit direction of said vacuum ultraviolet ...

Vacuum ultraviolet photoionization and chemical ionization combined ion source for mass spectrometry

This invention relates to the field of mass spectrometry, and more specifically to a vacuum ultraviolet photoionization and chemical ionization combined ion source, which consists of a vacuum ultraviolet light source and an ion source chamber. An ion acceleration electrode, an ion repulsion electrode, an ion extraction electrode, and a differential interface electrode positioned inside the ion source chamber are arranged along the exit direction of the vacuum ultraviolet light beam in sequence and spaced, coaxial, and parallel from each other. The ion acceleration electrode, the ion repulsion electrode, the ion extraction electrode, and the differential interface electrode are all plate structures with central through holes. The vacuum ultraviolet light beam passes through the central through holes of the electrodes along the axial direction. By utilizing a single vacuum ultraviolet light source, the ion source is feasible to switch between two ionization modes, vacuum ultraviolet photoionization (VUV PI) and chemical ionization (CI), under suitable ion source pressure, thus greatly expanding the range of detectable samples.

Micro-channel heat exchanger

The invention involves a micro-channel heat exchanger, which includes flat tubes (8), fins (9) and plate-type header pipes communicated with the flat tubes, (8) each plate-type header pipe comprising a flat tube groove plate, a distribution plate (2) and an outer side sealing plate (5), a plurality of flat tube groove through holes (3) are provided in the flat tube groove plate (1) along a length direction, throttling channels (4) communicated with the flat tube groove through holes (3) are provided in the distribution plate (2) along an arrangement direction of the flat tube groove through holes (3), the outer side sealing plate (5) is provided on one side, far away from the flat tube groove plate (1), of the distribution plate (2). The micro-channel heat exchanger can solve the problems of low heat exchange efficiency and small heat exchange area of the heat exchanger.

CONNECTING MEMBER AND MICRO-CHANNEL HEAT EXCHANGER

The invention provides a connecting member and a micro-channel heat exchanger. The connecting member comprises a first side plate, a second side plate and an arc-shaped plate connected between the two plates, wherein a plurality of communicating channels ( 1 ) which are in parallel with one another and are spaced apart are provided in the connecting member, each of the communicating channels ( 1 ) extends from the first side plate to the second side plate. The invention solves the problem that the outer walls of the heat exchange tubes become thin due to bending of the heat exchanger.

Connecting member and micro-channel heat exchanger

The invention provides a connecting member and a micro-channel heat exchanger. The connecting member comprises a first side plate, a second side plate and an arc-shaped plate connected between the two plates, wherein a plurality of communicating channels (1) which are in parallel with one another and are spaced apart are provided in the connecting member, each of the communicating channels (1) extends from the first side plate to the second side plate. The invention solves the problem that the outer walls of the heat exchange tubes become thin due to bending of the heat exchanger.

HEAT EXCHANGER AND ASSEMBLY METHOD THEREFOR

A heat exchanger comprising a housing and a core body accommodated in the housing. The housing comprises a first body and a second body. The first body is a metal material. The second body is a plastic material. The first body and the second body are connected to each other so as to form a first cavity. The core body is accommodated in the first cavity. The core body is fixedly connected to the first body. The core body comprises multiple heat exchange tubes. A first fluid channel is formed between the heat exchange tubes. A second fluid channel is formed in the heat exchange tube. The heat exchanger further comprises a connecting block. The connecting block is fixed to the first body, and the connecting block is located outside the first cavity. The connecting block is provided with a first flow-through hole.

MICRO-CHANNEL HEAT EXCHANGER

The invention involves a micro-channel heat exchanger, which includes flat tubes (), fins() and plate-type header pipes communicated with the flat tubes, () each plate-type header pipe comprising a flat tube groove plate, a distribution plate () and an outer side sealing plate (), a plurality of flat tube groove through holes () are provided in the flat tube groove plate () along a length direction, throttling channels () communicated with the flat tube groove through holes () are provided in the distribution plate () along an arrangement direction of the flat tube groove through holes (), the outer side sealing plate () is provided on one side, far away from the flat tube groove plate (), of the distribution plate (). The micro-channel heat exchanger can solve the problems of low heat exchange efficiency and small heat exchange area of the heat exchanger. 189812531432351257474. A micro-channel heat exchanger , wherein the micro-channel heat exchanger comprises flat tubes () , fins () and plate-type header pipes communicated with the flat tubes () , each of the plate-type header pipes comprises a flat tube groove plate () , a distribution plate () and an outer side sealing plate () , a plurality of flat tube groove through holes () are provided in the flat tube groove plate () along a length direction , throttling channels () communicated with the flat tube groove through holes () are provided in the distribution plate () along an arrangement direction of the flat tube groove through holes () , the outer side sealing plate () is provided on one side , far away from the flat tube groove plate () , of the distribution plate () , the outer side sealing plate () comprises a protruding channel () extending along an arrangement direction of the throttling channels () , and the protruding channel () is communicated with at least part of the throttling channels () in the same column.2621246. The micro-channel heat exchanger according to claim 1 , wherein toothed grooves () ...

Heat exchanger and assembly method therefor

Heat exchanger, heat exchange assembly, and heat management system

A heat exchanger, a heat exchange assembly, and a heat management system are provided. The heat exchanger includes a first heat exchange region and a second heat exchange region. The heat exchanger includes a first plate, a third plate, a fourth plate, and a second plate arranged in sequence. The third plate includes a mating hole, and the fourth plate includes a mating hole disposed opposite to and in mating communication with the mating hole of the third plate. The fourth plate includes a mating hole disposed opposite to and in mating communication with the second plate, and the second plate includes a hole disposed opposite to and in mating communication with the fourth plate. A hole channel in the first heat exchange is communicated with a hole channel in the second heat exchange region via the third plate and the fourth plate.

Heat exchanger, heat exchange assembly, and heat management system

Heat exchanger and assembly method therefor