A kind of new blower fan group of double-temperature refrigerator source type that has heat recovery function
Technical field
The utility model relates to a kind of new blower fan group that is used for central air conditioner system, a kind of more precisely new blower fan group of double-temperature refrigerator source type that has heat recovery function.
Background technology
In central air conditioner system, new blower fan group is to bear the air conditioner end equipment of new air cooling dehumidification treatments task.Humiture independent regulation air-conditioning system, it is a kind of new, energy-saving central air conditioner system, it can increase substantially the refrigerating efficiency (COP) of cold water main unit by improving the supply water temperature of concentrating low-temperature receiver or directly adopting the low grade natural low-temperature receiver, reaches the purpose of air-conditioning system whole energy.In this system, the high temperature chilled water that concentrated low-temperature receiver provides is mainly born indoor sensible heat load, do not bear or only part bear air-conditioning system dehumidifying task, its VMC need provide auxiliary dehumidifying means in addition.Type new blower fan group in double-temperature refrigerator source is exactly according to above-mentioned needs, bears the special equipment of fresh air dehumidification function in summer with the pattern that carries auxiliary cold source.If will carry auxiliary cold source is designed to heat-pump-type, can also carry out heat treated to new wind in the transition season before air-conditioning system does not have central heat source or central heat source to begin heat supply.
As shown in Figure 1, have only one group of surface cooler 2 usually in the new blower fan group of existing conventional, adopt cryogenic freezing water or direct evaporation system that new wind is carried out cool-down dehumidification and handle.Have in the new blower fan group of heat reclamation device at as shown in Figure 2 existing, increased by one group of heat reclamation device, but bear the cool-down dehumidification function still have only one group of surface cooler 2, and must adopt low temperature cold source.Under above-mentioned two kinds of situations, when the surface cooler 2 that is used to dehumidify was direct-expansion coil, this new blower fan group must be provided with one group of air-cooled or water-cooled freezing machine assembly cover use simultaneously.
Since surface cooler 2 bear summer to new wind lower the temperature, the dehumidifying task, therefore, the low-temperature receiver that existing new blower fan group is adopted just must be according to the needs that dehumidify, the lower low temperature cold source (2~5 ℃ of 7 ℃ of chilled water supply water temperatures or evaporating temperatures) of employing refrigerating efficiency.In addition, when surface cooler 2 is direct-expansion coil, necessary supporting air-cooled or water-cooled condenser system simultaneously, this make troubles for the installation of equipment.
The utility model content
At the deficiency that above-mentioned existing new blower fan group exists, the purpose of this utility model is to provide a kind of new blower fan group of double-temperature refrigerator source type that has heat recovery function.This unit by annual air draft recuperation of heat, summer to the application of low-grade high temperature low-temperature receiver and the air draft high-efficiency condensation process that carries cold source system, can significantly improve the processing efficiency of VMC, for adopting summer double-temperature refrigerator source humiture independent regulation air-conditioning technical that a kind of high efficiency new wind tupe is provided, its operation of heat pump pattern can also effectively solve the new wind heating problems in transition season simultaneously.And, by compressor, condenser are concentrated and be arranged in the new blower fan group, also can effectively solve the problem that unit is installed inconvenience.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of new blower fan group of double-temperature refrigerator source type that has heat recovery function comprises heat recovery function section, fresh air dehumidification functional section, condensation exhaust functional section.The described new blower fan group of double-temperature refrigerator source type that has heat recovery function, the heat recovery function section is provided with one group of heat reclamation device, by the heat/wet exchange of new wind and air draft, can reclaim the cold/heat in the air draft.The fresh air dehumidification functional section is respectively arranged with pressure fan and one group of cold/hot water coil pipe and one group of direct-expansion coil/evaporimeter.Wherein, pressure fan is responsible for providing the transmission ﹠ distribution power of new wind; Cold (heat) water coil summer condition is responsible for the heating in winter of the pre-cold-peace of new wind in summer by the high temperature cold water design; The direct-expansion coil evaporimeter is responsible for the degree of depth dehumidifying and the transition Ji Xinfeng heating of new wind in summer.The condensation exhaust functional section is provided with exhaust blower and compressor and condenser, exhaust blower is responsible for providing exhaust system power, evaporimeter in compressor and condenser and the fresh air dehumidification functional section constitutes the heat-pump-type cold and heat source system that this new blower fan group carries, new wind degree of depth dehumidifying low-temperature receiver is provided summer and takes away condensation heat by air draft, transition Ji Zeke is converted to heat pump mode heat-obtaining from air draft and is used for new wind heating by four-way change-over valve.Filter and or humidifier can be set in the unit as required.
Heat reclamation device connects new wind inlet, reclaims the wind inlet, and heat reclamation device 1 is not sent into the tow channel gas flow point after the heat exchange cold/hot water coil pipe and the condenser of connection; Condenser one road pipeline connects four-way change-over valve, and another road pipeline connects four-way change-over valve by evaporimeter, and four-way change-over valve connects compressor with the two-way pipeline, the corresponding installation of evaporimeter with pressure fan, and condenser is relative with exhaust blower to be installed.
Heat reclamation device in the described heat recovery function section can be board-like full heat or heat recovering device, also can be rotary-type full heat or heat recovering device, or intermediate medium formula heat reclamation device such as coiled, heat pipe-type, solution-type.
Described fresh air dehumidification functional section, its chilled water coil designs by the design chilled water design supply water temperature of concentrating low-temperature receiver summer, and direct-expansion coil cooling amount needs configuration by dehumidifying.
Described unit carries cold source system, can be single-cooling type, only is used for the fresh air dehumidification in summer; Also can be heat-pump-type, both be used for the fresh air dehumidification in summer, also can be used for transition Ji Xinfeng heating.
The utlity model has following outstanding beneficial effect:
1) by air-conditioning system is carried out air draft in a organized way, and heat reclamation device is set in unit, can effectively reclaims the cold/heat in the air draft, reduce the new wind of air-conditioning system and handle energy consumption.
2) by in new blower fan group, the pyrometric scale cooler being set, adopt low-grade low-temperature receiver that new wind is carried out precooling treatment, can effectively improve the refrigerating efficiency of concentrating low-temperature receiver, and may for adopting natural cooling source to provide.
3) by the air-conditioning system air draft cooler condenser after the employing recuperation of heat, can effectively reduce the condensing pressure of providing low-temperature receiver for oneself, the COP of system is increased.
4) by the conversion of heat pump mode, can realize heat treated to new wind, help to solve the preceding low excessively problem of room temperature of central heat source heat supply in transition season.
Description of drawings
Fig. 1 is the systematic schematic diagram of existing conventional new blower fan group;
Fig. 2 is the existing systematic schematic diagram that has the new blower fan group of heat reclamation device;
Fig. 3 is for having the system construction drawing of the new blower fan group of double-temperature refrigerator source type of heat recovery function in the utility model.
Description of reference numerals is as follows:
1---heat reclamation device 2---cold (heat) water coil
3---evaporimeter 4---pressure fan
5---condenser 6---compressor
7---four-way change-over valve 8---exhaust blower
9---filter 10---humidifier
The specific embodiment
In the utility model scheme as shown in Figure 3, in having the new blower fan group of double-temperature refrigerator source type of heat recovery function, cold (heat) water of cold (heat) water coil 2 provides by cold (heat) source of concentrating, outside.Summer, after new wind cools through heat reclamation device 1, again by cold (heat) water coil 2 (be chilled water coil summer) precooling, finish the further dehumidification treatments of new wind at last by evaporimeter 3, send into indoor by pressure fan 4 then; Indoor exhaust wind then under exhaust blower 8 drives, through heat reclamation device 1 and after newly wind carries out heat (wetting) exchange, is cooled off condenser 5 earlier again, is discharged to outdoor then.Transition season can switch to heat pump mode by four-way change-over valve 7 as required, and new wind is sent into indoor after evaporimeter 3 (transferring condenser under the heat pump mode) heating, and its heat is taken from air draft by condenser 5 (transferring condenser under the heat pump mode).Winter, new wind through heat reclamation device 1 preheating after, after cold (heat) water coil 2 (be hot-water coil pipe winter) heating, send into indoorly again, provide the low-temperature receiver part for oneself and do not devote oneself to work winter.The condensation exhaust functional section is provided with exhaust blower 8 and compressor 6 and condenser 5, the new wind side of unit can be provided with as required filter 9 and (or) humidifier 10.
The utility model by annual air draft recuperation of heat, summer to the application of low-grade high temperature low-temperature receiver and the air draft high-efficiency condensation process that carries cold source system, can significantly improve the processing efficiency of VMC, for adopting summer double-temperature refrigerator source humiture independent regulation air-conditioning technical that a kind of high efficiency new wind tupe is provided, its operation of heat pump pattern can also effectively solve the new wind heating problems in transition season simultaneously.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; though but on its shape or structure, do any variation, every identical with the utility model or akin technical scheme is all within its protection domain.