The operation principle of the energy saving heat pump high temperature dehumidifying circulatory system
The present invention relates to material baking or oven dry accessory, specifically a kind of operation principle of the energy saving heat pump high temperature dehumidifying circulatory system.
Existing system is comprised of off-premises station, indoor set, compressor, expansion valve etc., and indoor set, off-premises station are split type.The indoor set major function is to improve this baking room temperature, and the function of off-premises station is absorption chamber outer air heat, and compressor is responsible for energy transportation, and it is throttling and energy adjustment that expansion valve is responsible for.In service in system, the temperature of baking room constantly rises, the moisture of material also constantly is being evaporated out, become hot and humid air, in order to be beneficial to the loose wet of material, necessary in good time hydrofuge, hot and humid Bas Discharged in the baking room is outdoor, outdoor normality air is introduced the indoor set heating send into baking room, reduce the air moisture content of baking room, be beneficial to the Quick diffusing of material moisture.There is following shortcoming in existing system:
1. system is divided into indoor set and off-premises station is split type, and each one does his duty for both, function singleness, and on-the-spot construction technical requirement is high, and workload is large, and handicraft is blamed assurance.
2. can take away amount of heat simultaneously in the hydrofuge process, thereby have portion of energy to be wasted.
3. dehumidification rate is affected by environment, when air humidity is large, has reduced dehumidification rate, has prolonged the dehumidifying time.
4. the air energy of off-premises station is not fully utilized.
5. when heat pump broke down, indoor set just can not operate, and lengthened working hours, and reduced dehumidification rate.
6. the special baking process that constant temperature is surely wet requires to be difficult to accomplish, can not satisfy the temperature adjustment requirement.
Summary of the invention
For the problems referred to above, the invention provides a kind of operation principle of the energy saving heat pump high temperature dehumidifying circulatory system, this system can effectively reduce energy dissipation, reaches the dehumidification rate height, and can temperature adjustment surely wet.
The present invention is achieved by the following technical solutions: a kind of operation principle of the energy saving heat pump high temperature dehumidifying circulatory system, comprise heat pump, heat regenerator and thermal circulation fan, described thermal circulation fan is sent into heated dry air in the hot baking room, in hot baking room the heat radiation moisture absorption after, discharge return air, this return air enters main condenser, heat again through main condenser, sent in the hot baking room by thermal circulation fan again, the cyclic drying material, the return air that hot baking room is discharged also passes through heat regenerator, heat regenerator drains into evaporimeter with return air, and evaporimeter carries out heat exchange with return air and new wind mixing, again through the auxiliary condenser heating, then send into again in the heat regenerator by the evaporimeter adjustable speed fan, obtain new return air; Heat regenerator is sent new return air into main condenser and is heated, delivers to hot baking room by thermal circulation fan.
As preferably, described evaporimeter adjustable speed fan is provided with two paths, and with the return air that evaporimeter is discharged, the a-road-through road enters atmosphere, and the a-road-through road enters heat regenerator and recycles.
As preferably, with the bypass branch road of auxiliary condenser as main condenser, the temperature in hot baking room has reached design temperature, opens magnetic valve, and the operation of beginning auxiliary condenser reduces temperature; Otherwise shut electromagnetic valve stops auxiliary condenser, the rising temperature.
As improvement, also comprise the heating emergency system, described heating emergency system connects thermal circulation fan.
The present invention has taked above-mentioned corrective measure to carry out, and its beneficial effect is remarkable:
1. utilize rational scheme and structure that whole system is combined together; Complete machine dispatches from the factory, and air intake and air-out are all finished by same unit, reduces site operation difficulty and expense, alleviates staff's workload.
2. the energy of the used heat of hot baking room discharge can be recycled utilization; The integral type unit constantly carries out the thermal energy conversion, and energy short distance transportation is not disturbed by atmospheric environment, and loss is little, thereby improves the material moisture Quick diffusing, shortens the arid cycle of material.
3. the present invention can utilize little air quantity damping, and the scheme of Wind Volume circulation reaches the purpose that improves heat utilization rate, and can satisfy the surely wet baking requirement of constant temperature of special process, improves quality and the uniformity of material.
4. adopt the heating emergency system, when heat pump breaks down can not normally move the time, can not shut down again maintenance maybe can not obtain on-call maintenance the time; the heating emergency system starts; until fault is discharged or after material was dried, examination and repair system reduced client's loss effectively again.
Description of drawings
Fig. 1 is structural representation and the systemic circulation route map of the embodiment of the invention 1;
Fig. 2 is the fundamental diagram of the embodiment of the invention 1 heat pump.
Among the figure, the 1st, hot baking room, the 2nd, thermal circulation fan, the 3rd, main condenser, the 4th, heating emergency system, the 5th, new air inlet, the 6th, evaporimeter, the 7th, auxiliary condenser, the 8th, evaporimeter adjustable speed fan, the 9th, heat regenerator, the 10th, gas-liquid separator, the 11st, compressor, the 12nd, expansion valve, the 13rd, magnetic valve.
The specific embodiment
The present invention is further illustrated in conjunction with the embodiments for the below's contrast accompanying drawing:
Embodiment 1, a kind of operation principle of the energy saving heat pump high temperature dehumidifying circulatory system, comprise hot baking room, heat pump, heat regenerator and thermal circulation fan, also comprise the heating emergency system, the heating emergency system connects thermal circulation fan, heat pump comprises main condenser and auxiliary condenser, and evaporimeter and other known accessories, auxiliary condenser are the bypass branch road of main condenser.
The main dehumidifying circulatory system: thermal circulation fan is sent into heated dry air in the hot baking room, after the air heat radiation moisture absorption, most return air enters again main condenser, heats through main condenser again in the hot baking room, again sent in the hot baking room cyclic drying material that goes round and begins again by thermal circulation fan.
The inferior dehumidifying circulatory system: thermal circulation fan is sent into heated dry air in the hot baking room, after the interior air heat radiation of the hot baking room moisture absorption, sub-fraction return air enters heat regenerator, heat regenerator drains into evaporimeter with this part return air, mix rear by after the evaporimeter heat absorption with the outdoor air that enters from the new air inlet of evaporimeter, again through the auxiliary condenser heating, then send by the evaporimeter adjustable speed fan, the a-road-through road enters atmosphere, the a-road-through road enters damp-heat air that heat regenerator and hot baking room enter carry out heat exchange after, sending into main condenser heats again again, send into hot baking room through thermal circulation fan, find out simultaneously by inferior dehumidifying circulation process and can regulate hot baking room humidity.
When heat pump breaks down can not normally move the time, fail again in time to shut down maintenance, start the heating emergency system, send as hot baking room provides hot blast by thermal circulation fan, until fault is got rid of or treated drying materials.
The heat pump operation principle:
With reference to Fig. 2, heat pump comprises main condenser and auxiliary condenser, compressor, gas-liquid separator, expansion valve etc., this type of accessory is known technology, and difference is that the present invention increases an auxiliary condenser as the bypass branch road of main condenser, has magnetic valve to connect between them.Refrigerant is under the effect of compressor, in system, circulate, under the compressor effect, finish the temperature-rise period that boosts of gaseous state, enter main condenser and discharge heat of high temperature, send into hot baking room, simultaneously, refrigerant is cooled and is converted into liquid state, after it runs to evaporimeter, drop in temperature, at this moment evaporimeter newly advance air will be continuously with the heat transferred refrigerant, liquid refrigerants absorbs rapidly evaporation, and again be converted into gaseous state and enter compressor, refrigerant constantly circulates, and just can realize airborne heat is transported in the hot baking room, so that the baking needed energy to be provided.
If require hot baking room interior persistently overheating, then close the magnetic valve between main condenser and the auxiliary condenser, then main condenser will continue circulating-heating, use wind for hot baking room provides dry, thereby reach the purpose of intensification; If arrived design temperature in the hot baking room, then open magnetic valve, the running of beginning auxiliary condenser, the pressure of main condenser and temperature will descend, also thereupon decline or steady of temperature in the hot baking room.Thereby find out by auxiliary condenser and can regulate temperature.
The present invention can also pass through evaporimeter heat exchange Fan Regulation temperature and humidity, the evaporimeter adjustable speed fan is made as top gear, middling speed gear, low or first gear, according to the temperature requirement in the hot baking room, regulate respectively the gear of evaporimeter heat exchange blower fan, reached the purpose of conditioning.
What more than enumerate only is specific embodiments of the invention, obviously, the invention is not restricted to above embodiment.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should belong to protection scope of the present invention.