CN2030304U

CN2030304U - Multi-energy resources combined drying device

Info

Publication number: CN2030304U
Application number: CN 88201739
Authority: CN
Inventors: 庞晓培; 商桂电
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-03-11
Filing date: 1988-03-11
Publication date: 1989-01-04

Abstract

The utility model relates to a multi-energy resources combined drying device. The utility model is characterized in that energy resources such as solar power, electrical energy, and heat pumps are adopted by the utility model to execute desiccation. The utility model has the advantages of energy saving and stable quality. The utility model can realize the continuous low temp drying and dehumidification, and the utility model can work continuously in various weather such as fine days, cloudy days, rain days, etc. The utility model is suitable for the processing of agricultural, native, and aquatic products such as noodles, medicinal materials, wood, tea leaves, tobacco, etc.

Description

Multi-energy resources combined drying device

The utility model is a kind of drying device, particularly utilizes multipotency source combined dryer (abbreviation device).

Known drying device, single dry with solar energy, electrical heating, heat pump or fire baking, the drying device that does not utilize solar energy, electrical heating and heat pump multipotency source to unite.Single energy drying device is subjected to certain condition restriction, as solar drying apparatus, by single solar energy, is subjected to the restriction of the moon, rain, night sky and the influence of solar irradiation power, and baking temperature is difficult grasps continuous operation throughout the year.

Task of the present utility model provides a kind of drying device that utilizes solar energy, electrical heating and the associating of heat pump multipotency source.It is one that this device compiles solar energy, electric energy, heat pump, and the energy is fully used, and compensation mutually reaches energy savings in good time, can carry out drying throughout the year continuously and work.

Be further described below in conjunction with accompanying drawing and enforcement:

Accompanying drawing is a schematic diagram of the present utility model, and the structural group of solar energy shown in the figure, electrical heating and three systems of heat pump becomes:

1. solar energy system is that the daylighting glass of solar energy air heat collector (1) faces Nanan and is contained in drying shed (21) top, separate with a flat board between the room inner chamber, the plate face is coated the coating that absorbs sunshine, plate be north and south stride to, north is fixed, the south stays a spacing for being communicated with both air ducts, the upper and lower hole of respectively opening of north wall, top is air inlet (air enters solar energy air heat collector (1)), the bottom is air outlet (air goes out drying shed (21)), on outside the wall, lower air duct (22) is connected in aggregates, air circulation capable of circulation therein.

2. electric heater (2) is contained in the air inlet place above the air channel (22), the air cooled condenser (4) of heat pump is housed on the air channel between electric heater (2) and the axial flow blower (5), and be in parallel with auxiliary water cooled condenser (12), there is control valve (11) in the import department of water cooled condenser (12);

3. heat pump is by refrigeration compressor (16), air cooled condenser (4), liquid reservoir (10) filter (8), heating power expansion valve (7), freon evaporimeter (being aerial cooler) (6) is formed, this system's copper pipe, triple valve (14), right angle valve (9), high pressure gauge (13), low-pressure meter (17) connects, air cooled condenser (4), axial flow blower (5) and freon evaporimeter (aerial cooler) (6) are contained in the air channel (22) that is connected with solar energy system and electric heater (2), exhaust door (3) is arranged on the air channel (22), shutter (19) and airstrainer (20) are arranged down.

Its enforcement is represented as accompanying drawing, this device drying is to make medium circulation by the hot-air of heat pump, this dry run is the physical process of heat and mass transport, material in drying shed (21) is carried out the low temperature dehumidification drying, make moisture content from material inside, arrive the vaporization of material surface and drying by diffusion, this is a mass transfer process--diffusion, be again heat transfer process--vaporization, from the energy viewpoint, this process, except that heat pump consumption of power () be for obtain dry air freeze necessary, utilized the waste heat (generally being otiose " used heat ") from air cooled condenser (4) discharging that produces for refrigeration, changing useless is usefulness, has saved the energy.At first be that heat pump drives refrigeration compressor (16) by threephase motor, extrude high temperature, the Freon gas of high pressure (15), send in the pipe of air cooled condenser (4), the heat that Freon gas (15) carries is passed to by the outer air of air cooled condenser (4) pipe, hot-air enters drying shed (21) from upper air duct (22), Freon gas (15) under high pressure is condensed into liquid and deposits liquid reservoir (10) in, refilter through filter (8), behind heating power expansion valve (7) expenditure and pressure, send in freon evaporimeter (aerial cooler) (6) pipe, the heat of absorption tube outer air, become low temperature, the Freon gas of low pressure, be inhaled into refrigeration compressor (16) again, be compressed into high temperature, the gas of high pressure, reciprocation cycle work according to this.

In order to guarantee dry energy continuously, carry out smoothly, must be with the water of overflowing, the water vapour that is vaporized into is drained, like this, partial pressure that will the surrounding medium air is less than the partial pressure of water vapor on the material surface that is dried, the moisture of material inside could constantly spread to appearance, the constantly vaporization of the moisture on surface, will be after starting axial flow blower (5), from adjustable shutter (19) through airstrainer (20), lower air duct (22) inhaled air, be introduced into aerial cooler (freon evaporimeter) (6), be cooled to below the dew point, make steam be condensed into water, flow into bottom condensate water funnel (18) and outside the discharge system.When air cooled condenser (4) is discharged heat above design conditions, can lead to auxiliary water cooled condenser (12) and use for producing hot water.

Behind the bleed, the air of relatively dry, then pass through outside the pipe of air cooled condenser (4) through axial flow blower (5), liberated heat when freon condenses in the suction pipe, after air is heated again, along upper air duct (22) through electric heater (2), deliver to solar energy air heat collector (1), obtain solar heat, flow into drying shed (21) material is carried out drying, the steam that is generated is from drying shed (21) lower air outlet, condensed when aerial cooler (freon evaporimeter) (6) along lower air duct (22), and outside the discharge system.Air behind the bleed is inhaled into axial flow blower (5) and delivers to outside air cooled condenser (4) pipe, and another is heated, reciprocation cycle work according to this.

This device is a kind of solar energy and electric energy of both having utilized, and has utilized the drying device of waste heat again.Heat pump all can be heated in fine, cloudy, rainy day, night, removal moisture drying, obtained the periodic duty continuously in system of required dry air, at this moment, electrical heating, solar energy all can; As the rainy day, then be aided with electrical heating, fine day is then only used solar energy, is aided with the heat pump dehumidifying, with exhaust door (3) hydrofuge, can save electric energy, reaches the raising air themperature, reduces relative humidity, finishes and continuously carries out work.

Because this device is the low temperature dehumidification drying, from different with fire baking seasoning, can not burn, the infringement material, the material look that keeps dry, flavor, health are good, steady quality. Be applicable to the dry processings such as noodles, medicinal material, timber, tealeaves, preserved fruit, tobacco leaf pesticide pair soil bit product and aquatic products.

Claims

1, a kind of drying device, the multipotency source combined dryer by solar energy drying system, electric heater and heat pump are formed is characterized in that:

A) the solar energy drying system is by solar energy air heat collector (1), drying shed (21) is formed, the daylighting glass of described solar energy air heat collector (1) faces south orientation and is contained in drying shed (21) top, separate with a flat board between the room inner chamber, the plate face is coated the coating that absorbs sunshine, plate be north and south stride to, north is fixed, a spacing is stayed in the south, to be communicated with both air ducts, on the north wall, respectively open a hole down, top is air inlet, air enters solar energy air heat collector (1), and the bottom is an air outlet, and air goes out drying shed (21), on, on outside following hole and the wall, lower air duct (22) is connected, and the freon evaporimeter (aerial cooler) (6) of heat pump is housed on the air channel between air outlet and the axial flow blower (5);

B) electric heater (2) is contained in upper air duct (22) air inlet place, and the air cooled condenser (4) of heat pump is housed on the air channel between the axial flow blower (5), and be in parallel with auxiliary water cooled condenser (12), there is control valve (11) in the import department of water cooled condenser (12);

C) heat pump is by refrigeration compressor (16), air cooled condenser (4), liquid reservoir (10), filter (8), heating power expansion valve (7), freon evaporimeter (being aerial cooler) (6) is formed, this system's copper pipe, triple valve (14), right angle valve (9), high pressure gauge (13), low-pressure meter (17) connects, described air cooled condenser (4), axial flow blower (5) and freon evaporimeter (aerial cooler) (6), be contained in and solar energy system, in the air channel that electric heater is connected (22), exhaust door (3) is arranged on the air channel (22), shutter (19) and airstrainer (20) are arranged down.