Recovery type heat dehumidifying unit
Technical field
Recovery type heat dehumidifying unit belongs to the runner air dehumidifier, is specifically related to a kind of runner air dehumidifier of recovery type heat.
Background technology
Rotary dehumidifier applies to multiple neck cities such as industry, military affairs, science and technology in a large number, its operation principle is: desiccant wheel is divided into processing region and regeneration zone at the dehumidifying intersegmental part by sealing system, desiccant wheel with 8~10 change/hour speed slowly rotate, be a continuous process to guarantee whole dehumidifying.When handling the processing region of air by runner, steam wherein is adsorbed by the moisture absorption medium in the runner (now being generally silica gel), and steam undergoes phase transition simultaneously, and discharges latent heat, runner also because of moisture absorption certain moisture content tend to saturated gradually; At this moment, the processing air becomes air dried, heat because of self moisture content minimizing and latent heat release.Simultaneously, at regeneration zone, another road air is earlier through behind regenerative heater, becomes high temperature air (being generally 100~140 ℃) and passes saturated desiccant wheel after the moisture absorption, makes the water evaporates of having adsorbed in the runner, thereby recovered the dehumidifying effect of runner; Simultaneously, regeneration air becomes humid air because of the evaporation of moisture content; Afterwards, humid air is discharged to outdoor by the regeneration blower fan again.This process is is constantly gone round and begun again, and dry air is sent into designated space continuously after adjustment, reach high-precision Temperature and Humidity Control.Regenerative heater in the existing rotary dehumidifier all need consume lot of energy and come runner is heated, so that the moisture that adsorbs in runner vaporization is so that desiccant wheel regeneration.Usually, understand some heat energy that is used for heating runner, wasted a large amount of heat energy thus along with the air that carried out after the dehumidification treatments is discharged in the atmosphere together.Particularly ought run into some Industrial cleaning facility field and require humidity to be controlled at 1~40%, but the air output in Industrial cleaning facility place is big, energy loss is big, also needs to increase heat reclamation device.Thereby, the energy consumption height is the existing ubiquitous shortcoming of rotary dehumidifier, secondly if the air cooling (or heating) that do, heat after using pressure fan and surface cooler to dehumidifying, if the air heat higher (or lower) after the dehumidifying just need give corresponding higher refrigeration (or heating) amount, so objectively power consumption is also high.
About how reducing the problem of rotary dehumidifier power consumption, numerous inventors transform rotary dehumidifier.For example Chinese patent " heat pump recovery type heat rotary dehumidifier " (patent No. ZL200820044690.0) discloses a kind of dehumidifier, this rotary dehumidifier also includes compressor, condenser, evaporimeter and restricting element except that common rotary dehumidifier parts, compressor, condenser, evaporimeter and restricting element connect and form the heat-exchange working medium closed circuit, and condenser, evaporimeter are located at respectively in regeneration air inlet duct, the regeneration exhausting duct.Use parts such as compressor, condenser, evaporimeter in this scheme, parts are many, and all need external source to drive, so actual energy-saving effect and not obvious.
Simultaneously, for brand-new wind-heat reclaims unit, it can reclaim the cold (heat) of a part of air draft when operation, but for some occasions very high to humidity requirement, often establish a heat recovery fresh air unit and a dehumidifier individually, perhaps design a new blower fan of dehumidifying and two units are connected the requirement that solves dehumidifying and recuperation of heat with airduct then with a recuperation of heat unit, it is low that this design all can not solve refrigerating efficiency, the energy consumption height, the problem that initial cost is big, usually the new blower fan group of design is brand-new wind in addition, when doing conservation measures, only changes blower fan into frequency conversion fan, can not play real energy-conservation effect, mix the wind section as increasing at unit, the new return air mixed proportion of free adjustment reaches maximum energy-saving effect.
The utility model content
The technical problems to be solved in the utility model is: the deficiency that overcomes existing rotary wheel dehumidifying technology, providing a kind of unites two into one rotary wheel dehumidifying and heat recovery technology, the dehumidifier energy-saving effect is obvious, and can the new return air mixed proportion of free adjustment with further energy-conservation recovery type heat dehumidifying unit.
The technical scheme that the utility model technical solution problem is adopted is: a kind of recovery type heat dehumidifying unit, comprise surface cooler, indoor blower, indoor exhaust wind blower fan, return air fan, regenerative heater, plate valve and desiccant wheel, desiccant wheel is divided into dehumidifying district and renewing zone, the inlet side in dehumidifying district is provided with the air intake section of effect just, and the air draft side is provided with maintenance section, surface cooler and indoor blower; The inlet side of renewing zone is provided with return air fillter section, return air fan and regeneration bringing-up section, the air draft side is provided with the indoor exhaust wind blower fan, it is characterized in that between the section of maintenance and the surface cooler and return air fan and regeneration bringing-up section between be provided with and mix wind section and rotating supported recuperation of heat runner.
Described air intake just is provided with first filter in the section of effect.
Be provided with second filter in the described return air fillter section.
Be provided with regenerative heater in the described regeneration bringing-up section.
Be provided with air-valve in the described mixed wind section.
Equal filling thickness is the high-quality polyurethane foamed composite board insulation material of 50mm between this unit template inner and outer plates.
Special feature of the present utility model is: be provided with the recuperation of heat runner in this recovery type heat dehumidifying unit.Under the rotation of recuperation of heat runner, air and indoor return air the heat convection heat after the dehumidifying, that do, return air utilizes the gained heat, the auxiliary regeneration that realizes desiccant wheel, the energy consumption of minimizing regenerative heater.Another projecting point of the present utility model is: by controlling the mixed proportion that the aperture of mixing the air-valve that is provided with in the wind section realizes regulating new wind and return air, in the hope of reaching suitable air quantity, thereby further realize energy-conservation.
Outdoor new wind is by desiccant wheel, and steam is adsorbed by the moisture absorption medium in the runner (being generally silica gel) in the new wind, and steam undergoes phase transition simultaneously, and discharges latent heat, desiccant wheel also because of moisture absorption certain moisture content tend to saturated gradually; At this moment, handle moisture content minimizing and latent heat release the become dried air of air because of self.This dry air carries out heat exchange through recuperation of heat runner and indoor exhaust wind then, plays the effect of precooling.Can reduce the cold of surface cooler after the precooling greatly.
After indoor exhaust wind was carried out heat exchange by heat exchange runner and outdoor new wind, temperature raise, and the saturated desiccant wheel after becoming high temperature air and pass absorption through regenerative heater makes the water evaporates of having adsorbed in the runner, thereby recovered the dehumidifying effect of runner.Owing to behind the indoor exhaust wind process recuperation of heat runner, played the effect of preheating, can reduce the heat that adds of regenerative heater.
During summer operation, after outdoor new wind enters air intake just the section of effect is done primarily efficient filter, pass through desiccant wheel, steam is adsorbed by the moisture absorption medium in the runner in the new wind, steam undergoes phase transition simultaneously, and discharges latent heat, desiccant wheel also because of moisture absorption certain moisture content tend to saturated gradually; At this moment, handle moisture content minimizing and latent heat release the become dried air of air because of self.This dry air carries out heat exchange through recuperation of heat runner and indoor exhaust wind then, plays the effect of precooling.Can reduce the cold of surface cooler after the precooling greatly.
After indoor exhaust wind is filtered through the return air fillter section, by the heat exchange runner, after carrying out heat exchange with outdoor new wind, temperature raises, saturated desiccant wheel after the process regenerative heater becomes high temperature air and passes absorption, make the water evaporates of having adsorbed in the runner, thereby recovered the dehumidifying effect of desiccant wheel.Owing to behind the indoor exhaust wind process recuperation of heat runner, played the effect of preheating, can reduce the heat that adds of regenerative heater.
Winter operation, when outdoor temperature was very low, at first along with outside air temperature reduces, the cold-producing medium inspiratory volume increased, and the unit inspiratory capacity reduces rapidly, thereby has reduced the dehumidifying effect of unit, can not satisfy indoor dehumidifying needs.Secondly because the compression ratio of compressor constantly increases, the delivery temperature of compressor raises.Under very low outdoor temperature, compressor can be because of preventing overheated automatic shutdown protection, so the running temperature of compressor can not be too low.The 3rd, because the compression of compressor increases, systematic function descends.So in this sense, adopt this recovery type heat dehumidifying unit can improve new wind-warm syndrome degree, reduce the compressor wasted work, unit efficiency is provided, prolong unit durability.
Compared with prior art, the recovery type heat of the present utility model dehumidifying beneficial effect that unit had is: this recovery type heat dehumidifying unit, not only can reduce the refrigerating capacity of air-supply, and can also reduce regeneration simultaneously and adding heat, improve the efficient of unit, reduce cost of investment.Secondly, this recovery type heat dehumidifying unit is provided with and mixes wind section and air-valve thereof, when indoor new wind demand is changed, and the aperture that can pass through to regulate the air-valve that mixes the wind section, energy-conservation thereby the ratio of the new return air of free adjustment further realizes.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Wherein, 1, air intake just the section of effect 2, desiccant wheel 3, maintenance section 4, recuperation of heat runner 5, mix wind section 6, surface cooler 7, indoor blower 8, return air fillter section 9, return air fan 10, regeneration bringing-up section 11, indoor exhaust wind blower fan 12, regenerative heater 13, first filter 14, second filter 15, air-valve 16, plate valve.
The specific embodiment
Recovery type heat dehumidifying unit comprises surface cooler 6, indoor blower 7, indoor exhaust wind blower fan 11, return air fan 9, regenerative heater 12, plate valve 16 and desiccant wheel 2, and desiccant wheel 2 is divided into dehumidifying district and renewing zone.The inlet side in dehumidifying district is provided with the air intake section of effect 1 just, and the air draft side is provided with maintenance section 3, surface cooler 6 and indoor blower 7; The inlet side of renewing zone is provided with return air fillter section 8, return air fan 9 and regeneration bringing-up section 10, and the air draft side is provided with indoor exhaust wind blower fan 11.Wherein, be provided with mixed wind section 5 and rotating supported recuperation of heat runner 4 between maintenance section 3 and the surface cooler 6 and between return air fan 9 and the regeneration bringing-up section 10.With outdoor new wind wind direction, recuperation of heat runner 4 is in the windward position of mixing wind section 5; With indoor return air wind direction, mix the windward position of wind section 5 at recuperation of heat runner 4.
Described air intake just is provided with first filter 13 in the section of effect 1.
Be provided with second filter 14 in the described return air fillter section 8.
Be provided with regenerative heater 12 in the described regeneration bringing-up section 10.
Be provided with air-valve 15 in the described mixed wind section 5.
For realizing insulation, equal filling thickness is the high-quality polyurethane foamed composite board insulation material of 50mm between the template inner and outer plates of this recovery type heat dehumidifying unit.
The course of work of this recovery type heat dehumidifying unit is: outdoor new wind is through air intake just behind first filter 13 of the section of effect 1, dehumidifying district by desiccant wheel 2, steam is adsorbed by the moisture absorption medium in the desiccant wheel 2 in the new wind, steam undergoes phase transition simultaneously, and discharge latent heat, desiccant wheel 2 also because of moisture absorption certain moisture content tend to saturated gradually.At this moment, handle moisture content minimizing and latent heat release the become dried air of air because of self.Should do then, hot air under the stirring of recuperation of heat runner 4 and indoor cold air draft carry out the thermal convection current exchange, play the effect of precooling.Can reduce the cold of surface cooler 6 after the precooling greatly.
Indoor return air is behind process return air fillter section 8 and return air fan 9, by recuperation of heat runner 4, carry out heat exchange with outdoor new wind, temperature raises, regenerative heater 12 heating backs through regeneration bringing-up section 10 form high temperature air again, pass the renewing zone of the saturated desiccant wheel 2 behind the adsorbed water steam, make the water evaporates of having adsorbed in the desiccant wheel 2, thereby recovered the dehumidifying effect of desiccant wheel 2.Because indoor return air has played the effect of preheating through recuperation of heat runner 4, so can reduce the heat that adds of regenerative heater 12.
Simultaneously, can be by regulating the mixed proportion that the aperture of mixing the air-valve 15 in the wind section 5 is regulated new wind and return air, in the hope of reaching suitable air quantity, thereby further realize energy-conservation.
The above, it only is preferred embodiment of the present utility model, be not to be the restriction of utility model being made other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of technical solutions of the utility model according to technical spirit of the present utility model.