CN2218909Y

CN2218909Y - Multi-stage semi-conductor refrigerating particle

Info

Publication number: CN2218909Y
Application number: CN 94248147
Authority: CN
Inventors: 莫建荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-15
Filing date: 1994-12-15
Publication date: 1996-01-31
Anticipated expiration: 2004-12-15

Abstract

The utility model relates to a multi-stage semiconductor refrigerating particle. The structure of the multi-stage semiconductor refrigerating particle is that a plurality of single-stage particles are divided by metal materials by layers and then are welded in turn to form a whole multi-stage semiconductor refrigerating particle structure on the basis of whole single-stage particle structure. The multi-stage semiconductor refrigerating particle has simple structure, easy fabrication, and high work efficiency, and the temperature difference of the cold and hot ends of the multi-stage semiconductor refrigerating particle is far higher than single-stage particle. The utility model is suitable for the dissipation and constant temperature keeping of the special objects of various fields, and can also be used as a refrigerating and baking two-purpose box, a cooling and heating fan, an air conditioner, a refrigerator, etc. for civil products.

Description

Multilevel semiconductor refrigeration particle

The utility model relates to semiconductor refrigerating equipment, specifically a kind of multilevel semiconductor refrigeration particle.

Semiconductor cooler is a kind of new energy transducer, be used widely in some fields in recent years, for example: the dissipation from electronic devices in the space technology, various low temperature detecting head, low-noise amplifier, medical science cuvette groove constant temperature, freezing microtome section, environmental test chamber etc. are still, the overall structure of the semiconductor cooler that uses is the single-stage particle of single layer structure mostly at present, the semiconductor cooler efficient of this structure is low, refrigerating capacity is few, hot junction and cold-end temperature difference are little, its range of application is restricted, and can not satisfy the demand of the application that enlarges day by day.

The purpose of this utility model just provides a kind of multilevel semiconductor refrigeration particle, it can enlarge cold and hot end the temperature difference, increase refrigerating capacity, increase work efficiency.

In order to achieve the above object, the technical solution adopted in the utility model is: be on the basis of individual layer single-stage refrigeration particle in overall structure, a plurality of single-stage refrigeration particles are separated from level to level with metal material and welded successively, form an overall structure, promptly constitute multilevel semiconductor refrigeration particle, the layer plane is vertical with the sense of current.

The utility model has the advantages that: simple in structure, high efficiency, the temperature difference of its cold and hot end is much larger than the single-stage particle, except that existing application is used, also can expand the normal domestic product to, as uses such as refrigeration baking dual-purpose case, cold and warm air heating radiator, air-conditioner, refrigerators.

Fig. 1 is the structural representation of single-stage particulate semiconductor cooler.

Fig. 2 is the structural representation of multistage particulate semiconductor cooler of the present utility model.

Below in conjunction with accompanying drawing the utility model is done to describe in further detail.

Semiconductor cooler is by semi-conducting material P-Bi ₂Te3S _B2Te ₃N-B _I2Te ₃S _B2Te ₃Make, the operation principle of this device is based on Pa Er card (Peltier) effect, but its qualitative interpretation is the energy difference that participates in the carrier of electric current in different materials.When carrier at the contact interface place of two kinds of materials when a kind of material with higher-energy shifts out, unnecessary energy will be passed to the lattice of second kind of material, at this moment have heat to emit on contact.If sense of current is opposite, then carrier comes makeup energy by lattice, so absorb heat at this contact, promptly begins refrigeration.

In Fig. 1, T ₁, T ₂, T ₃Be metal material, be generally copper coin, be called flow deflector.T ₂Rise and connect T ₁And T ₃Effect.At T ₁With T ₃Between be connected to DC current E, like this with regard to structure a closed-loop path that comprises power supply E.N, P are respectively n type semiconductor element and P-type semiconductor element.Under the driving of electric current, because the peltier effect effect, heat is by T ₂Turn to T ₁And T ₃, make T ₂The temperature of end descends gradually, usually T ₂End is called refrigeration or working end, and T ₁And T ₃End generally is to be connected with a radiator, is called radiating end.Regulate the whole refrigeration speed of operating current adjustable size; The switch current direction can make refrigerator change the pyrogenicity state immediately into from the refrigeration duty.

The core of semiconductor cooler is the refrigeration particle, and Fig. 2 is the structural representation of multistage particulate semiconductor refrigerator of the present utility model.As seen from the figure, n ' and P ' are the single-stage particles, and they are separated from level to level by metal material X and weld, and form a refrigeration particle that integral body is the multilayer multilevel hierarchy.The multistage particle of this structure can become product separately, needs only and correct supporting connection of external condition, can constitute the temperature difference and the refrigerating capacity cooler much larger than the single-stage particle.Certainly, except that three grades of particles shown in the figure, can also be with level Four, Pyatyi so that more multistage welding, but be not less than two-stage at least, should decide according to the practical application needs.

Claims

1, a kind of multilevel semiconductor refrigeration particle, comprise single-stage refrigeration particle, it is characterized in that, it also comprises: have at least two single-stage refrigeration particles to be separated from level to level by metal material and weld successively, promptly constituting an overall structure is multilevel semiconductor refrigeration particle, and the layer plane is vertical with the sense of current.