CN204141780U - The water loop heat pump air conditioning system of cold and heat combined supply - Google Patents
The water loop heat pump air conditioning system of cold and heat combined supply Download PDFInfo
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- CN204141780U CN204141780U CN201420545512.1U CN201420545512U CN204141780U CN 204141780 U CN204141780 U CN 204141780U CN 201420545512 U CN201420545512 U CN 201420545512U CN 204141780 U CN204141780 U CN 204141780U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 238000004378 air conditioning Methods 0.000 title claims abstract description 28
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000001816 cooling Methods 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 238000011084 recovery Methods 0.000 claims abstract description 18
- 239000000498 cooling water Substances 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 25
- 239000003507 refrigerant Substances 0.000 claims description 19
- 239000008236 heating water Substances 0.000 claims description 8
- 239000008399 tap water Substances 0.000 claims description 6
- 235000020679 tap water Nutrition 0.000 claims description 6
- 238000005057 refrigeration Methods 0.000 claims description 5
- 239000002918 waste heat Substances 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
本实用新型公开了一种冷热联供的水环热泵空调系统,包括生活热水子系统、新风子系统、水-水热泵源与汇混合环路子系统以及设置在室内的风机盘管;所述生活热水子系统包括第一板式换热器、第二板式换热器、第三板式换热器、储热水罐、快速加热器以及水泵,所述新风子系统包括新风机组、回风机、热回收装置、多个新风口以及多个回风口,在同一室内设置一个新风口和一个回风口,所述水-水热泵源与汇混合环路子系统包括水-水热泵机组,所述水-水热泵机组分别与第三板式换热器和风机盘管连接。本实用新型系统可以将余热回收进行利用,通过各种子系统的相互配合,不仅可以在夏季供冷和提供热水,也可以在冬季供热和提供热水,满足了用户的需求。
The utility model discloses a water ring heat pump air-conditioning system with combined cooling and heating, which comprises a domestic hot water subsystem, a fresh air subsystem, a water-water heat pump source and sink mixed loop subsystem, and a fan coil unit arranged indoors; The domestic hot water subsystem includes a first plate heat exchanger, a second plate heat exchanger, a third plate heat exchanger, a hot water storage tank, a fast heater and a water pump, and the fresh air subsystem includes a fresh air unit, a return fan , a heat recovery device, a plurality of fresh air outlets and a plurality of return air outlets, one fresh air outlet and one return air outlet are set in the same room, the water-water heat pump source and sink hybrid loop subsystem includes a water-water heat pump unit, the water -The water heat pump unit is connected with the third plate heat exchanger and the fan coil respectively. The system of the utility model can recover waste heat and utilize it. Through the mutual cooperation of various subsystems, it can not only provide cooling and hot water in summer, but also provide heat and hot water in winter, which meets the needs of users.
Description
技术领域technical field
本发明涉及一种水环热泵空调系统,尤其是一种冷热联供的水环热泵空调系统,属于空调系统技术领域。The invention relates to a water-ring heat pump air-conditioning system, in particular to a water-ring heat pump air-conditioning system with combined cold and heat supply, and belongs to the technical field of air-conditioning systems.
背景技术Background technique
水环热泵空调系统是指小型的水/空气热泵机组的一种应用方式,即用水环路将小型的水/热泵机组并联在一起,形成一个封闭环路,构成一套回收建筑物内部余热作为其低位热源的热泵供暖、供冷的空调系统。The water loop heat pump air conditioning system refers to an application method of small water/air heat pump units, that is, the water loop connects small water/heat pump units in parallel to form a closed loop to form a set of waste heat recovery inside the building as Its low heat source heat pump heating and cooling air conditioning system.
在夏季,目前的水环热泵空调系统中的水/空气热泵机组基本按制冷工况运行,其冷凝热通过散热设备释放。但这种方式浪费了大量的冷凝热量,还对城市热岛现象产生不良影响,这也是所有空调系统中值得注意的问题,如果把这多余的热量进行回收,不仅能减轻城市热岛现象,还可以为供热系统节约不少能源。因此,提供能将余热回收利用的带热水供应系统的水环热泵空调系统已成为当前的一种趋势。In summer, the water/air heat pump unit in the current water loop heat pump air conditioning system basically operates under cooling conditions, and its condensation heat is released through the cooling equipment. However, this method wastes a lot of condensation heat, and also has a negative impact on the urban heat island phenomenon, which is also a problem worth noting in all air-conditioning systems. If the excess heat is recovered, it can not only reduce the urban heat island phenomenon, but also serve The heating system saves a lot of energy. Therefore, it has become a current trend to provide a water loop heat pump air-conditioning system with a hot water supply system capable of recycling waste heat.
发明内容Contents of the invention
本发明的目的是为了解决上述现有技术的缺陷,提供一种结构简单、使用方便,可以将余热回收进行利用的冷热联供的水环热泵空调系统。The object of the present invention is to solve the above-mentioned defects of the prior art, and provide a water-loop heat pump air-conditioning system with simple structure, convenient use, and recovery and utilization of waste heat.
本发明的目的可以通过采取如下技术方案达到:The purpose of the present invention can be achieved by taking the following technical solutions:
冷热联供的水环热泵空调系统,包括生活热水子系统、新风子系统、水-水热泵源与汇混合环路子系统以及设置在室内的风机盘管;Water loop heat pump air conditioning system with combined cooling and heating, including domestic hot water subsystem, fresh air subsystem, water-water heat pump source and sink mixed loop subsystem, and fan coil installed indoors;
所述生活热水子系统包括第一板式换热器、第二板式换热器、第三板式换热器、储热水罐、快速加热器以及水泵,所述第一板式换热器、第二板式换热器、第三板式换热器和储热水罐依次连接,所述水泵分别与第一板式换热器和储热水罐连接,所述第一板式换热器还通过第一管路与自来水进口连接;The domestic hot water subsystem includes a first plate heat exchanger, a second plate heat exchanger, a third plate heat exchanger, a hot water storage tank, a fast heater and a water pump. The first plate heat exchanger, the second The second plate heat exchanger, the third plate heat exchanger and the hot water storage tank are connected in sequence, and the water pumps are respectively connected with the first plate heat exchanger and the hot water storage tank, and the first plate heat exchanger is also connected through the first The pipeline is connected to the tap water inlet;
所述新风子系统包括新风机组、回风机、热回收装置、多个新风口以及多个回风口,在同一室内设置一个新风口和一个回风口,所述新风机组通过送风管道与新风口连接,所述回风机通过回风管道与回风口连接,所述热回收装置分别与新风机组、回风机、第一板式换热器和第三板式换热器连接;The fresh air subsystem includes a fresh air unit, a return fan, a heat recovery device, a plurality of fresh air outlets and a plurality of return air outlets, one fresh air outlet and one return air outlet are set in the same room, and the fresh air unit is connected to the fresh air outlet through an air supply duct , the return fan is connected to the return air outlet through the return air duct, and the heat recovery device is respectively connected to the fresh air unit, the return fan, the first plate heat exchanger and the third plate heat exchanger;
所述水-水热泵源与汇混合环路子系统包括水-水热泵机组,所述水-水热泵机组分别与第三板式换热器和风机盘管连接。The water-water heat pump source and sink mixed loop subsystem includes a water-water heat pump unit, and the water-water heat pump unit is respectively connected with the third plate heat exchanger and the fan coil.
作为一种优选方案,所述新风机组包括新风阀、空气过滤器、预热器、空气换热器、再热器、风机、第一压缩机、四通换向阀、水-制冷剂换热器、气液分离器、高压储液器、干燥过滤器、第一节流阀、第二节流阀、再热阀、第一电磁阀、第二电磁阀、第三电磁阀以及第四电磁阀;所述新风阀、空气过滤器、预热器、空气换热器、再热器和风机依次连接,所述风机通过送风管道与新风口连接,所述水-制冷剂换热器具有冷冻水进出口,该冷冻水进出口与热回收装置连接;在新风机组供冷时,第一电磁阀和第三电磁阀关闭,第二电磁阀和第四电磁阀开启,所述第一压缩机、四通换向阀、再热阀、再热器、水-制冷剂换热器、第四电磁阀、高压储液器、干燥过滤器、第二电磁阀、第一节流阀、空气换热器、四通换向阀、气液分离器和第一压缩机依次相连通;在新风机组供热时,第一电磁阀和第三电磁阀开启,第二电磁阀和第四电磁阀关闭,所述第一压缩机、四通换向阀、空气换热器、第一电磁阀、高压储液器、干燥过滤器、第三电磁阀、第二节流阀、水-制冷剂换热器、再热阀、四通换向阀、气液分离器和第一压缩机依次相连通。As a preferred solution, the fresh air unit includes a fresh air valve, an air filter, a preheater, an air heat exchanger, a reheater, a fan, a first compressor, a four-way reversing valve, a water-refrigerant heat exchange device, gas-liquid separator, high-pressure liquid reservoir, dry filter, first throttle valve, second throttle valve, reheat valve, first solenoid valve, second solenoid valve, third solenoid valve and fourth solenoid valve Valve; the fresh air valve, air filter, preheater, air heat exchanger, reheater and fan are connected in sequence, the fan is connected to the fresh air port through the air supply pipe, and the water-refrigerant heat exchanger has The inlet and outlet of chilled water are connected to the heat recovery device; when the fresh air unit is cooling, the first solenoid valve and the third solenoid valve are closed, the second solenoid valve and the fourth solenoid valve are opened, and the first compressor Machine, four-way reversing valve, reheat valve, reheater, water-refrigerant heat exchanger, fourth solenoid valve, high pressure liquid receiver, dry filter, second solenoid valve, first throttle valve, air The heat exchanger, four-way reversing valve, gas-liquid separator and the first compressor are connected in sequence; when the fresh air unit supplies heat, the first solenoid valve and the third solenoid valve are opened, and the second solenoid valve and the fourth solenoid valve are opened. closed, the first compressor, four-way reversing valve, air heat exchanger, first electromagnetic valve, high-pressure liquid receiver, dry filter, third electromagnetic valve, second throttle valve, water-refrigerant exchange The heater, the reheat valve, the four-way reversing valve, the gas-liquid separator and the first compressor are connected in sequence.
作为一种优选方案,所述新风机组还包括热气管电磁阀和热气旁通阀,所述第一压缩机与四通换向阀相连通的管路为第二管路,所述第一节流阀与空气换热器相连通的管路为第三管路,所述热气管电磁阀的一端与第二管路连接,所述述热气管电磁阀的另一端与热气旁通阀的一端连接,所述热气旁通阀的另一端与第三管路连接。As a preferred solution, the fresh air unit also includes a hot gas pipe solenoid valve and a hot gas bypass valve, the pipeline connecting the first compressor and the four-way reversing valve is the second pipeline, and the first section The pipeline connecting the flow valve with the air heat exchanger is the third pipeline, one end of the hot gas pipe solenoid valve is connected to the second pipeline, the other end of the hot gas pipe solenoid valve is connected to one end of the hot gas bypass valve connected, and the other end of the hot gas bypass valve is connected to the third pipeline.
作为一种优选方案,所述水-水热泵机组包括第二压缩机、电子膨胀阀、第四板式换热器、第五板式换热器、第一阀门、第二阀门、第三阀门、第四阀门、第五阀门、第六阀门、第七阀门以及第八阀门,所述风机盘管与水-水热泵机组之间设有第一循环泵,所述第三板式换热器与水-水热泵机组之间设有依次连接的第九阀门、第十阀门和第二循环泵;在水-水热泵机组以制冷机工况运行时,所述第一阀门、第四板式换热器、第二阀门、第一循环泵和风机盘管依次连接构成冷冻水回路,所述第二压缩机、第四板式换热器、电子膨胀阀和第五板式换热器依次连接构成制冷循环回路;在水-水热泵机组以热泵机工况运行时,所述第五阀门、第五板式换热器、第六阀门、第一循环泵和风机盘管依次连接构成高温热水循环回路,所述第二压缩机、第四板式换热器、电子膨胀阀和第五板式换热器依次连接构成制热循环回路。As a preferred solution, the water-water heat pump unit includes a second compressor, an electronic expansion valve, a fourth plate heat exchanger, a fifth plate heat exchanger, a first valve, a second valve, a third valve, a Four valves, the fifth valve, the sixth valve, the seventh valve and the eighth valve, a first circulation pump is provided between the fan coil unit and the water-water heat pump unit, and the third plate heat exchanger and the water-water heat pump unit The ninth valve, the tenth valve and the second circulating pump are arranged in sequence between the water heat pump units; when the water-water heat pump unit operates in the refrigerator working condition, the first valve, the fourth plate heat exchanger, The second valve, the first circulation pump and the fan coil are connected in sequence to form a chilled water circuit, and the second compressor, the fourth plate heat exchanger, the electronic expansion valve and the fifth plate heat exchanger are connected in sequence to form a refrigeration cycle; When the water-water heat pump unit is operating as a heat pump, the fifth valve, the fifth plate heat exchanger, the sixth valve, the first circulation pump and the fan coil are connected in sequence to form a high-temperature hot water circulation loop, and the The second compressor, the fourth plate heat exchanger, the electronic expansion valve and the fifth plate heat exchanger are sequentially connected to form a heating cycle loop.
作为一种优选方案,所述水环热泵空调系统还包括冷却水子系统,所述冷却水子系统包括冷却塔、第三循环泵、第六板式换热器、第十一阀门以及第十二阀门,所述冷却塔、第三循环泵和第六板式换热器依次连接构成冷却循环回路,所述第六板式换热器还通过第十一阀门和第十二阀门连接在第十阀门的两端;在水-水热泵机组以制冷机工况运行时,所述第五板式换热器、第四阀门、第三板式换热器、第九阀门、冷却水子系统、第二循环泵和第三阀门依次连接构成冷却水回路。As a preferred solution, the water loop heat pump air conditioning system further includes a cooling water subsystem, and the cooling water subsystem includes a cooling tower, a third circulating pump, a sixth plate heat exchanger, an eleventh valve, and a twelfth Valve, the cooling tower, the third circulation pump and the sixth plate heat exchanger are connected in sequence to form a cooling cycle, and the sixth plate heat exchanger is also connected to the tenth valve through the eleventh valve and the twelfth valve Both ends; when the water-water heat pump unit operates under the condition of a refrigerator, the fifth plate heat exchanger, the fourth valve, the third plate heat exchanger, the ninth valve, the cooling water subsystem, and the second circulation pump It is connected with the third valve in turn to form a cooling water circuit.
作为一种优选方案,所述水环热泵空调系统还包括地热子系统,所述地热子系统包括第十三阀门、第十四阀门以及地埋管,所述地埋管分别通过第十三阀门和第十四阀门连接在第九阀门的两端;在水-水热泵机组以热泵机工况运行时,所述第四板式换热器、第八阀门、第三板式换热器、地热子系统、第二循环泵和第七阀门依次连接构成低温热水循环回路。As a preferred solution, the water loop heat pump air-conditioning system further includes a geothermal subsystem, the geothermal subsystem includes a thirteenth valve, a fourteenth valve, and buried pipes, and the buried pipes respectively pass through the thirteenth valve and the fourteenth valve are connected to the two ends of the ninth valve; when the water-water heat pump unit operates in the heat pump mode, the fourth plate heat exchanger, the eighth valve, the third plate heat exchanger, and the geothermal sub The system, the second circulation pump and the seventh valve are sequentially connected to form a low-temperature hot water circulation loop.
作为一种优选方案,所述生活热水子系统还包括太阳能集热器,所述太阳能集热器与第二板式换热器连接。As a preferred solution, the domestic hot water subsystem further includes a solar heat collector, and the solar heat collector is connected to the second plate heat exchanger.
作为一种优选方案,所述生活热水子系统还包括补水阀,所述补水阀与水泵连接。As a preferred solution, the domestic hot water subsystem further includes a water replenishment valve, and the water replenishment valve is connected with a water pump.
本发明相对于现有技术具有如下的有益效果:Compared with the prior art, the present invention has the following beneficial effects:
1、本发明系统的新风子系统中,新风机组可以对室外空气进行过滤,然后在夏季进行供冷处理,在冬季进行供热处理,在过渡季节过滤后直接进入室内,为室内提供新鲜空气,室内空气经回风机抽出后可以利用热回收装置进行余热回收,然后提供给生活热水子系统,新风机组的冷冻水进出口可以通过热回收装置经水-水热泵源与汇混合环路子系统的水环回路连至风机盘管水环路,以实现低温冷冻水冷量的充分利用。1. In the fresh air subsystem of the system of the present invention, the fresh air unit can filter the outdoor air, then perform cooling treatment in summer and heat supply treatment in winter, and directly enter the room after filtering in transitional seasons to provide fresh air for the room. After the air is pumped out by the return fan, the heat recovery device can be used for waste heat recovery, and then provided to the domestic hot water subsystem. The chilled water inlet and outlet of the fresh air unit can pass through the heat recovery device through the water-water heat pump. The loop circuit is connected to the water loop of the fan coil unit to realize the full utilization of the cooling capacity of the low-temperature chilled water.
2、本发明系统的水-水热泵源与汇混合环路子系统,在结合冷却水子系统和地热子系统,使水-水热泵机组在夏季以制冷机工况运行时,为系统提供冷却水,使水-水热泵机组在冬季以热泵机工况运行时,为系统提供低温热水。2. The water-water heat pump source and sink hybrid loop subsystem of the system of the present invention is combined with the cooling water subsystem and the geothermal subsystem, so that the water-water heat pump unit can provide cooling water for the system when the water-water heat pump unit operates in the refrigerator mode in summer , so that the water-water heat pump unit can provide low-temperature hot water for the system when the water-water heat pump unit operates as a heat pump machine in winter.
3、本发明系统为结构简单,使用方便,可以将余热回收进行利用,通过各种子系统的相互配合,不仅可以在夏季供冷和提供热水,也可以在冬季供热和提供热水,满足了用户的需求。3. The system of the present invention is simple in structure, easy to use, and can recover and utilize waste heat. Through the cooperation of various subsystems, it can not only provide cooling and hot water in summer, but also heat and hot water in winter. Meet the needs of users.
附图说明Description of drawings
图1为本发明实施例1的冷热联供的水环热泵空调系统结构示意图。Fig. 1 is a schematic structural diagram of a water loop heat pump air conditioning system with combined cooling and heating in Embodiment 1 of the present invention.
图2为本发明实施例1的冷热联供的水环热泵空调系统中新风机组结构示意图。Fig. 2 is a schematic structural diagram of the fresh air unit in the water loop heat pump air-conditioning system with combined cooling and heating according to Embodiment 1 of the present invention.
其中,1-风机盘管,2-第一板式换热器,3-第二板式换热器,4-第三板式换热器,5-储热水罐,6-快速加热器,7-水泵,8-太阳能集热器,9-补水阀,10-第一管路,11-热水供应处,12-新风机组,13-回风机,14-热回收装置,15-新风口,16-回风口,17-新风阀,18-空气过滤器,19-预热器,20-空气换热器,21-再热器,22-风机,23-第一压缩机,24-四通换向阀,25-水-制冷剂换热器,26-气液分离器,27-高压储液器,28-干燥过滤器,29-第一节流阀,30-第二节流阀,31-再热阀,32-第一电磁阀,33-第二电磁阀,34-第三电磁阀,35-第四电磁阀,36-热气管电磁阀,37-热气旁通阀,38-第二管路,39-第三管路,40-水-水热泵机组,41-第二压缩机,42-电子膨胀阀,43-第四板式换热器,44-第五板式换热器,45-第一阀门,46-第二阀门,47-第三阀门,48-第四阀门,49-第五阀门,50-第六阀门,51-第七阀门,52-第八阀门,53-第一循环泵,54-第九阀门,55-第十阀门,56-第二循环泵,57-冷却塔,58-第三循环泵,59-第六板式换热器,60-第十一阀门,61-第十二阀门,62-第十三阀门,63-第十四阀门,64-地埋管。Among them, 1-fan coil unit, 2-first plate heat exchanger, 3-second plate heat exchanger, 4-third plate heat exchanger, 5-hot water storage tank, 6-fast heater, 7- Water pump, 8-solar heat collector, 9-filling water valve, 10-first pipeline, 11-hot water supply, 12-fresh air unit, 13-return fan, 14-heat recovery device, 15-fresh air outlet, 16 -Return air outlet, 17-fresh air valve, 18-air filter, 19-preheater, 20-air heat exchanger, 21-reheater, 22-fan, 23-first compressor, 24-four-way exchange Directional valve, 25-water-refrigerant heat exchanger, 26-gas-liquid separator, 27-high pressure liquid receiver, 28-dry filter, 29-first throttle valve, 30-second throttle valve, 31 -reheat valve, 32-first solenoid valve, 33-second solenoid valve, 34-third solenoid valve, 35-fourth solenoid valve, 36-hot gas pipe solenoid valve, 37-hot gas bypass valve, 38-the first Second pipeline, 39-third pipeline, 40-water-water heat pump unit, 41-second compressor, 42-electronic expansion valve, 43-fourth plate heat exchanger, 44-fifth plate heat exchanger, 45-first valve, 46-second valve, 47-third valve, 48-fourth valve, 49-fifth valve, 50-sixth valve, 51-seventh valve, 52-eighth valve, 53- The first circulation pump, 54-the ninth valve, 55-the tenth valve, 56-the second circulation pump, 57-cooling tower, 58-the third circulation pump, 59-the sixth plate heat exchanger, 60-the eleventh Valve, 61-twelfth valve, 62-thirteenth valve, 63-fourteenth valve, 64-underground pipe.
具体实施方式Detailed ways
实施例1:Example 1:
如图1和图2所示,本实施例的冷热联供的水环热泵空调系统,包括生活热水子系统、新风子系统、水-水热泵源与汇混合环路子系统、地热子系统、冷却水子系统以及设置在室内的风机盘管1,本实施例中室内是指宿舍内,每个室内的风机盘管1有两个;其中:As shown in Figure 1 and Figure 2, the water loop heat pump air-conditioning system for combined cooling and heating in this embodiment includes a domestic hot water subsystem, a fresh air subsystem, a water-water heat pump source and sink mixed loop subsystem, and a geothermal subsystem , the cooling water subsystem and the fan coil unit 1 arranged indoors. In this embodiment, the room refers to the dormitory, and there are two fan coil units 1 in each room; wherein:
所述生活热水子系统包括第一板式换热器2、第二板式换热器3、第三板式换热器4、储热水罐5、快速加热器6、水泵7、太阳能集热器8和补水阀9,所述第一板式换热器2、第二板式换热器3、第三板式换热器4和储热水罐5依次连接,所述水泵7分别与第一板式换热器2和储热水罐5连接,所述第一板式换热器2还通过第一管路10与自来水进口连接;所述太阳能集热器8与第二板式换热器3连接,让生活热水子系统可以具有多种热源,同时也有利于新风子系统和水-水热泵源与汇混合环路子系统的冬季工况;所述补水阀9与水泵7连接;The domestic hot water subsystem includes a first plate heat exchanger 2, a second plate heat exchanger 3, a third plate heat exchanger 4, a hot water storage tank 5, a rapid heater 6, a water pump 7, and a solar collector 8 and replenishment valve 9, the first plate heat exchanger 2, the second plate heat exchanger 3, the third plate heat exchanger 4 and the hot water storage tank 5 are connected in sequence, and the water pump 7 is connected with the first plate heat exchanger respectively The heater 2 is connected with the hot water storage tank 5, and the first plate heat exchanger 2 is also connected with the tap water inlet through the first pipeline 10; the solar heat collector 8 is connected with the second plate heat exchanger 3, so that The domestic hot water subsystem can have a variety of heat sources, and it is also beneficial to the winter working conditions of the fresh air subsystem and the water-water heat pump source and sink mixed loop subsystem; the water replenishment valve 9 is connected to the water pump 7;
所述新风子系统承担室内新鲜空气补充供应的功能,同时承担对室外空气进行增/减湿、制冷/加热的功能,包括新风机组12、回风机13、热回收装置14、多个新风口15以及多个回风口16,在同一室内设置一个新风口15和一个回风口16,所述新风机组12通过送风管道与新风口15连接,所述回风机13通过回风管道与回风口16连接,所述热回收装置14分别与新风机组12、回风机13、第一板式换热器2和第三板式换热器4连接;The fresh air subsystem is responsible for the supplementary supply of indoor fresh air, and at the same time undertakes the functions of increasing/dehumidifying, cooling/heating the outdoor air, including a fresh air unit 12, a return fan 13, a heat recovery device 14, and a plurality of fresh air outlets 15 And a plurality of return air outlets 16, a fresh air outlet 15 and a return air outlet 16 are set in the same room, the fresh air unit 12 is connected with the fresh air outlet 15 through the air supply duct, and the return fan 13 is connected with the return air outlet 16 through the return air duct , the heat recovery device 14 is respectively connected with the fresh air unit 12, the return fan 13, the first plate heat exchanger 2 and the third plate heat exchanger 4;
所述新风机组12包括新风阀17、空气过滤器18、预热器19、空气换热器20、再热器21、风机22、第一压缩机23、四通换向阀24、水-制冷剂换热器25、气液分离器26、高压储液器27、干燥过滤器28、第一节流阀29、第二节流阀30、再热阀31、第一电磁阀32、第二电磁阀33、第三电磁阀34以及第四电磁阀35,所述新风阀17为多叶新风阀,所述新风阀17、空气过滤器18、预热器19、空气换热器20、再热器21和风机22依次连接,所述风机22通过送风管道与新风口15连接;所述水-制冷剂换热器25具有冷冻水进出口,该冷冻水进出口与热回收装置14连接,由于新风子系统承担对去湿功能,因此该新风机组12中的冷冻水进出口温度(4-7℃)要低于风机盘管1中的冷冻水温度(9-12℃),冷冻水进出口可通过热回收装置14经水-水热泵源与汇混合环路子系统的水环回路连至风机盘管1水环路,以实现低温冷冻水冷量的充分利用;The fresh air unit 12 includes a fresh air valve 17, an air filter 18, a preheater 19, an air heat exchanger 20, a reheater 21, a fan 22, a first compressor 23, a four-way reversing valve 24, a water-cooling Agent heat exchanger 25, gas-liquid separator 26, high-pressure liquid reservoir 27, dry filter 28, first throttle valve 29, second throttle valve 30, reheat valve 31, first solenoid valve 32, second Solenoid valve 33, the 3rd solenoid valve 34 and the 4th solenoid valve 35, described fresh air valve 17 is multileaf fresh air valve, described fresh air valve 17, air filter 18, preheater 19, air heat exchanger 20, again Heater 21 and fan 22 are connected sequentially, and said fan 22 is connected to fresh air outlet 15 through air supply pipe; said water-refrigerant heat exchanger 25 has chilled water inlet and outlet, and said chilled water inlet and outlet are connected with heat recovery device 14 , since the fresh air subsystem undertakes the dehumidification function, the chilled water inlet and outlet temperature (4-7°C) in the fresh air unit 12 is lower than the chilled water temperature (9-12°C) in the fan coil unit 1, and the chilled water The inlet and outlet can be connected to the water loop of the fan coil unit 1 through the water loop of the water-water heat pump source and sink mixed loop subsystem through the heat recovery device 14, so as to realize the full utilization of the cooling capacity of the low-temperature chilled water;
在新风机组12供冷时,第一电磁阀32和第三电磁阀34关闭,第二电磁阀33和第四电磁阀35开启,所述第一压缩机23、四通换向阀24、再热阀31、再热器21、水-制冷剂换热器25、第四电磁阀35、高压储液器27、干燥过滤器28、第二电磁阀33、第一节流阀29、空气换热器20、四通换向阀24、气液分离器26和第一压缩机23依次相连通;在新风机组12供热时,第一电磁阀32和第三电磁阀34开启,第二电磁阀33和第四电磁阀35关闭,所述第一压缩机23、四通换向阀24、空气换热器20、第一电磁阀32、高压储液器27、干燥过滤器28、第三电磁阀34、第二节流阀30、水-制冷剂换热器25、再热阀31、四通换向阀24、气液分离器26和第一压缩机23依次相连通。When the fresh air unit 12 is cooling, the first solenoid valve 32 and the third solenoid valve 34 are closed, the second solenoid valve 33 and the fourth solenoid valve 35 are opened, and the first compressor 23, the four-way reversing valve 24, and the Thermal valve 31, reheater 21, water-refrigerant heat exchanger 25, fourth solenoid valve 35, high pressure liquid receiver 27, dry filter 28, second solenoid valve 33, first throttle valve 29, air exchanger The heater 20, the four-way reversing valve 24, the gas-liquid separator 26 and the first compressor 23 are connected in sequence; when the fresh air unit 12 is heating, the first electromagnetic valve 32 and the third electromagnetic valve 34 are opened, and the second electromagnetic valve The valve 33 and the fourth solenoid valve 35 are closed, the first compressor 23, the four-way reversing valve 24, the air heat exchanger 20, the first solenoid valve 32, the high pressure liquid reservoir 27, the dry filter 28, the third The solenoid valve 34 , the second throttle valve 30 , the water-refrigerant heat exchanger 25 , the reheat valve 31 , the four-way reversing valve 24 , the gas-liquid separator 26 and the first compressor 23 are connected in sequence.
所述新风机组12还可以包括热气管电磁阀36和热气旁通阀37,所述第一压缩机23与四通换向阀24相连通的管路为第二管路38,所述第一节流阀29与空气换热器20相连通的管路为第三管路39,所述热气管电磁阀36的一端与第二管路38连接,所述述热气管电磁阀36的另一端与热气旁通阀37的一端连接,所述热气旁通阀37的另一端与第三管路39连接。作为能量调节的热气旁通阀37能够提供一种将高压端的高温气态制冷剂旁通到系统的低压端的方法,从而保证系统始终保持在一个给定的最小回气压力状态下运行,本实施例采用旁通到蒸发器(空气换热器20)的入口的方法。The fresh air unit 12 may also include a hot gas pipe solenoid valve 36 and a hot gas bypass valve 37, the pipeline connecting the first compressor 23 and the four-way reversing valve 24 is the second pipeline 38, and the first The pipeline that the throttle valve 29 communicates with the air heat exchanger 20 is a third pipeline 39, one end of the hot gas pipe solenoid valve 36 is connected with the second pipeline 38, and the other end of the hot gas pipe solenoid valve 36 is It is connected with one end of the hot gas bypass valve 37 , and the other end of the hot gas bypass valve 37 is connected with the third pipeline 39 . The hot gas bypass valve 37 as an energy regulator can provide a way to bypass the high-temperature gaseous refrigerant at the high-pressure end to the low-pressure end of the system, so as to ensure that the system always operates at a given minimum return gas pressure. This embodiment A method of bypassing the inlet to the evaporator (air heat exchanger 20) is employed.
所述水-水热泵源与汇混合环路子系统包括水-水热泵机组40,本实施例的水-水热泵机组40有两个,每个水-水热泵机组40包括第二压缩机41、电子膨胀阀42、第四板式换热器43、第五板式换热器44、第一阀门45、第二阀门46、第三阀门47、第四阀门48、第五阀门49、第六阀门50、第七阀门51以及第八阀门52,所述电子膨胀阀42可满足冬夏季工况切换管路时改变流量的需要,所述风机盘管1与水-水热泵机组40之间设有第一循环泵53,所述第三板式换热器4与水-水热泵机组40之间设有依次连接的第九阀门54、第十阀门55和第二循环泵56;所述冷却水子系统和地热子系统串联在水-水热泵源与汇混合环路子系统的水环回路上,其中所述冷却水子系统包括冷却塔57、第三循环泵58、第六板式换热器59、第十一阀门60以及第十二阀门61,所述冷却塔57、第三循环泵58和第六板式换热器59依次连接构成冷却循环回路,所述第六板式换热器59还通过第十一阀门60和第十二阀门61连接在第十阀门55的两端;所述地热子系统包括第十三阀门62、第十四阀门63以及地埋管64,所述地埋管64分别通过第十三阀门62和第十四阀门63连接在第九阀门54的两端;The water-water heat pump source and sink hybrid loop subsystem includes a water-water heat pump unit 40. There are two water-water heat pump units 40 in this embodiment, and each water-water heat pump unit 40 includes a second compressor 41, Electronic expansion valve 42, fourth plate heat exchanger 43, fifth plate heat exchanger 44, first valve 45, second valve 46, third valve 47, fourth valve 48, fifth valve 49, sixth valve 50 , the seventh valve 51 and the eighth valve 52, the electronic expansion valve 42 can meet the needs of changing the flow rate when switching pipelines in winter and summer working conditions, the fan coil unit 1 and the water-water heat pump unit 40 are provided with a second A circulation pump 53, the ninth valve 54, the tenth valve 55 and the second circulation pump 56 connected sequentially between the third plate heat exchanger 4 and the water-water heat pump unit 40; the cooling water subsystem It is connected in series with the geothermal subsystem on the water loop of the water-water heat pump source and sink hybrid loop subsystem, wherein the cooling water subsystem includes a cooling tower 57, a third circulation pump 58, a sixth plate heat exchanger 59, a The eleventh valve 60 and the twelfth valve 61, the cooling tower 57, the third circulation pump 58 and the sixth plate heat exchanger 59 are sequentially connected to form a cooling circulation loop, and the sixth plate heat exchanger 59 also passes through the tenth A valve 60 and a twelfth valve 61 are connected to both ends of the tenth valve 55; the geothermal subsystem includes the thirteenth valve 62, the fourteenth valve 63 and the buried pipe 64, and the buried pipe 64 respectively passes through The thirteenth valve 62 and the fourteenth valve 63 are connected to both ends of the ninth valve 54;
在水-水热泵机组40以制冷机工况运行时,所述第一阀门45、第四板式换热器43、第二阀门46、第一循环泵53和风机盘管1依次连接构成冷冻水回路;所述第五板式换热器44、第四阀门48、第三板式换热器4、第九阀门54、冷却水子系统、第二循环泵56和第三阀门47依次连接构成冷却水回路,在冷却水回路中,可以关闭第九阀门54,开启第十三阀门62和第十四阀门63,利用地埋管64散热;所述第二压缩机41、第四板式换热器43、电子膨胀阀42和第五板式换热器44依次连接构成制冷循环回路;When the water-water heat pump unit 40 is operating in the refrigerator mode, the first valve 45, the fourth plate heat exchanger 43, the second valve 46, the first circulation pump 53 and the fan coil unit 1 are connected in sequence to form a chilled water circuit; the fifth plate heat exchanger 44, the fourth valve 48, the third plate heat exchanger 4, the ninth valve 54, the cooling water subsystem, the second circulating pump 56 and the third valve 47 are connected in sequence to form cooling water circuit, in the cooling water circuit, the ninth valve 54 can be closed, the thirteenth valve 62 and the fourteenth valve 63 can be opened, and the buried pipe 64 can be used to dissipate heat; the second compressor 41 and the fourth plate heat exchanger 43 , the electronic expansion valve 42 and the fifth plate heat exchanger 44 are sequentially connected to form a refrigeration cycle;
在水-水热泵机组40以热泵机工况运行时,所述第五阀门49、第五板式换热器44、第六阀门50、第一循环泵53和风机盘管1依次连接构成高温热水循环回路;所述第四板式换热器43、第八阀门52、第三板式换热器4、地热子系统、第二循环泵56和第七阀门51依次连接构成低温热水循环回路;所述第二压缩机41、第四板式换热器43、电子膨胀阀42和第五板式换热器44依次连接构成制热循环回路。When the water-water heat pump unit 40 is running in the heat pump mode, the fifth valve 49, the fifth plate heat exchanger 44, the sixth valve 50, the first circulation pump 53 and the fan coil unit 1 are sequentially connected to form a high-temperature heat pump. Water circulation loop; the fourth plate heat exchanger 43, the eighth valve 52, the third plate heat exchanger 4, the geothermal subsystem, the second circulation pump 56 and the seventh valve 51 are connected in sequence to form a low-temperature hot water circulation loop; The second compressor 41 , the fourth plate heat exchanger 43 , the electronic expansion valve 42 and the fifth plate heat exchanger 44 are sequentially connected to form a heating cycle.
根据冬夏不同工况,水-水热泵源与汇混合环路子系统的水环回路中的水温应保持在13-35℃范围内,以保证水-水热泵机组能在高效率下稳定运行,该子系统采用闭式循环系统,其冷水在系统内进行密闭循环,不与大气接触;另外,该子系统为同程式系统,水流通过各末端环路设备时的路程都相同(或基本相等),同程式系统各末端环路的水流阻力较为接近,有利于水力平衡,因此系统的水力稳定性好,流量分配均匀。According to different working conditions in winter and summer, the water temperature in the water loop of the water-water heat pump source and sink mixed loop subsystem should be kept within the range of 13-35°C to ensure the stable operation of the water-water heat pump unit at high efficiency. The subsystem adopts a closed circulation system, and its cold water circulates in a closed manner in the system without contacting the atmosphere; in addition, the subsystem is the same program system, and the distance of water flow through each terminal loop device is the same (or basically equal), The water flow resistance of each end loop of the same program system is relatively close, which is conducive to hydraulic balance, so the hydraulic stability of the system is good, and the flow distribution is even.
本实施例的冷热联供的水环热泵空调系统,具体原理如下:The specific principles of the combined cooling and heating water loop heat pump air conditioning system of this embodiment are as follows:
1)在生活热水子系统,在管网压力正常时,直接利用自来水压头进行热水供应,在自来水进入第一管路10后,依次通过第一板式换热器2、第二板式换热器3和第三板式换热器4处理后存储在储热水罐5中,储热水罐5中的水经过快速加热器6加热后,通过热水供应处11供应热水给用户;在管网压力不足时,经过补水阀9的自来水和储热水罐5的水一起由水泵7进行输送,依次通过第一板式换热器2、第二板式换热器3和第三板式换热器4处理后回到储热水罐5中,储热水罐5中的水经过快速加热器6加热后,通过热水供应处11供应热水给用户;在热水供应停止时,储热水罐5的水由水泵7进行输送,依次通过第一板式换热器2、第二板式换热器3和第三板式换热器4处理后回到储热水罐5中,完成热水的储存;1) In the domestic hot water subsystem, when the pressure of the pipe network is normal, the tap water pressure head is directly used for hot water supply. After the tap water enters the first pipeline 10, it passes through the first plate heat exchanger 2 and the second plate heat exchanger in sequence. Heater 3 and the third plate heat exchanger 4 are stored in the hot water storage tank 5 after being processed, and the water in the hot water storage tank 5 is heated by the rapid heater 6, and the hot water is supplied to the user through the hot water supply place 11; When the pressure of the pipe network is insufficient, the tap water passing through the replenishment valve 9 and the water in the hot water storage tank 5 are transported together by the water pump 7, and pass through the first plate heat exchanger 2, the second plate heat exchanger 3 and the third plate heat exchanger in sequence. Heater 4 returns to the hot water storage tank 5 after being processed, and after the water in the hot water storage tank 5 is heated by the rapid heater 6, hot water is supplied to the user through the hot water supply place 11; when the hot water supply stops, the storage The water in the hot water tank 5 is transported by the water pump 7, and is processed by the first plate heat exchanger 2, the second plate heat exchanger 3 and the third plate heat exchanger 4 in turn, and then returns to the hot water storage tank 5 to complete the heating process. storage of water;
2)在新风子系统,室外空气经新风阀17进入新风机组12内,先经空气过滤器18进行净化,在夏季时,新风经空气换热器20冷却后送入室内,如果室外空气的湿度很高时,则新风先经空气换热器20降温除湿,后经再热器21达到送风状态点后利用风机22送风,通过新风口15送入室内;在冬季时,新风先经过预热器19预热,再进入空气换热器20进行二次加热,达到送风状态点后利用风机22送风,通过新风口15送入室内;在过渡季节,室外空气经空气过滤器18净化后直接送入室内,新风机组12按通风运行模式运行;室内空气通过回风口16被回风机13抽出去,经热回收装置14进行余热回收后传送第一板式换热器2进行余热利用;2) In the fresh air subsystem, outdoor air enters the fresh air unit 12 through the fresh air valve 17, and is first purified by the air filter 18. In summer, the fresh air is cooled by the air heat exchanger 20 and then sent into the room. If the humidity of the outdoor air When it is very high, the fresh air is first cooled and dehumidified through the air heat exchanger 20, and then reaches the air supply state point through the reheater 21, and then utilizes the blower fan 22 to deliver air, and is sent into the room through the fresh air port 15; The heater 19 is preheated, and then enters the air heat exchanger 20 for secondary heating. After reaching the air supply state, the fan 22 is used to supply air, and it is sent into the room through the fresh air outlet 15; in the transitional season, the outdoor air is purified by the air filter 18 After that, it is directly sent into the room, and the fresh air unit 12 operates in the ventilation operation mode; the indoor air is drawn out by the return fan 13 through the air return port 16, and the waste heat is recovered by the heat recovery device 14, and then sent to the first plate heat exchanger 2 for waste heat utilization;
在夏季,所述新风机组12的供冷处理过程为:再热器21和水-制冷剂换热器25为冷凝器,空气换热器20为蒸发器,第一电磁阀32和第三电磁阀34关闭,第二电磁阀33和第四电磁阀35开启,第一压缩机23对气态制冷剂进行压缩后,依次经过四通换向阀24、再热阀31、再热器21、水-制冷剂换热器25、第四电磁阀35、高压储液器27、干燥过滤器28、第二电磁阀33、第一节流阀29和空气换热器20,经四通换向阀24进入气液分离器26进行气液分离后回到第一压缩机23,完成制冷过程;In summer, the cooling process of the fresh air unit 12 is as follows: the reheater 21 and the water-refrigerant heat exchanger 25 are condensers, the air heat exchanger 20 is an evaporator, the first solenoid valve 32 and the third solenoid valve 34 is closed, the second solenoid valve 33 and the fourth solenoid valve 35 are opened, the first compressor 23 compresses the gaseous refrigerant, and then passes through the four-way reversing valve 24, reheat valve 31, reheater 21, water- Refrigerant heat exchanger 25, fourth electromagnetic valve 35, high-pressure accumulator 27, dry filter 28, second electromagnetic valve 33, first throttle valve 29 and air heat exchanger 20, through four-way reversing valve 24 After entering the gas-liquid separator 26 for gas-liquid separation, return to the first compressor 23 to complete the refrigeration process;
在冬季,所述新风机组12的供热处理过程为:空气换热器20为冷凝器,水-制冷剂换热器25为蒸发器,第一压缩机23对气态制冷剂进行压缩后,依次经过四通换向阀24、空气换热器20、第一电磁阀32、高压储液器27、干燥过滤器28、第三电磁阀34、第二节流阀30、水-制冷剂换热器25和再热阀31,经四通换向阀24进入气液分离器26进行气液分离后回到第一压缩机23,完成制热过程;In winter, the heat supply process of the fresh air unit 12 is as follows: the air heat exchanger 20 is a condenser, the water-refrigerant heat exchanger 25 is an evaporator, and after the first compressor 23 compresses the gaseous refrigerant, After the four-way reversing valve 24, the air heat exchanger 20, the first solenoid valve 32, the high-pressure liquid reservoir 27, the dry filter 28, the third solenoid valve 34, the second throttle valve 30, the water-refrigerant heat exchange 25 and reheat valve 31, enter the gas-liquid separator 26 through the four-way reversing valve 24 for gas-liquid separation, and then return to the first compressor 23 to complete the heating process;
3)在水-水热泵源与汇混合环路子系统,水-水热泵机组40的第一阀门45、第二阀门46、第三阀门47和第四阀门48构成一组阀门,所述水-水热泵机组40的第五阀门49、第六阀门50、第七阀门51和第八阀门52构成另一组阀门,通过两组阀门的关闭与开启切换制热或制冷工况。3) In the water-water heat pump source and sink mixed loop subsystem, the first valve 45, the second valve 46, the third valve 47 and the fourth valve 48 of the water-water heat pump unit 40 form a group of valves, the water- The fifth valve 49 , the sixth valve 50 , the seventh valve 51 and the eighth valve 52 of the water heat pump unit 40 form another group of valves, and the heating or cooling working conditions are switched by closing and opening the two groups of valves.
所述水-水热泵机组40在夏季以制冷机工况运行时:第一阀门45、第二阀门46、第三阀门47和第四阀门48开启,第五阀门49、第六阀门50、第七阀门51和第八阀门52关闭,第四板式换热器43为蒸发器,风机盘管1的水依次经过第一阀门45、第四板式换热器43、第二阀门46和第一循环泵53后,再提供冷冻水给风机盘管1;第五板式换热器44为冷凝器,第五板式换热器44的水依次经过第四阀门48和第三板式换热器4,若此时第九阀门54关闭,第十三阀门62和第十四阀门63开启,则经第十三阀门62到地埋管64,利用地埋管64散热,散热后经第十四阀门63到冷却水子系统,这样就实现了地热子系统与冷却水子系统的同时散热;若此时第九阀门54开启,第十三阀门62和第十四阀门63关闭,则直接经第九阀门54到冷却水子系统,经冷却水子系统冷却后,依次经过第二循环泵56和第三阀门47,回到第五板式换热器44,可见流经水环回路中的循环水便是机组的冷却水;在运行过程中,所述第二压缩机41、第四板式换热器43、电子膨胀阀42和第五板式换热器44相连通完成循环制冷;When the water-water heat pump unit 40 operates in the refrigerator working condition in summer: the first valve 45, the second valve 46, the third valve 47 and the fourth valve 48 are opened, the fifth valve 49, the sixth valve 50, the The seventh valve 51 and the eighth valve 52 are closed, the fourth plate heat exchanger 43 is an evaporator, and the water in the fan coil unit 1 passes through the first valve 45, the fourth plate heat exchanger 43, the second valve 46 and the first circulation in sequence. After the pump 53, chilled water is provided to the fan coil unit 1; the fifth plate heat exchanger 44 is a condenser, and the water in the fifth plate heat exchanger 44 passes through the fourth valve 48 and the third plate heat exchanger 4 in sequence. At this time, the ninth valve 54 is closed, the thirteenth valve 62 and the fourteenth valve 63 are opened, then the thirteenth valve 62 goes to the buried pipe 64, and the buried pipe 64 is used to dissipate heat. cooling water subsystem, so that the simultaneous heat dissipation of the geothermal subsystem and the cooling water subsystem is realized; To the cooling water subsystem, after being cooled by the cooling water subsystem, it passes through the second circulation pump 56 and the third valve 47 in turn, and returns to the fifth plate heat exchanger 44. It can be seen that the circulating water flowing through the water loop is the unit cooling water; during operation, the second compressor 41, the fourth plate heat exchanger 43, the electronic expansion valve 42 and the fifth plate heat exchanger 44 are connected to complete cycle refrigeration;
所述水-水热泵机组在冬季以制热机工况运行时:第一阀门45、第二阀门46、第三阀门47和第四阀门48关闭,第五阀门49、第六阀门50、第七阀门51和第八阀门52开启,冷却水子系统关闭以节约能源,风机盘管1的水依次经过第五阀门49、第五板式换热器44、第六阀门50和第一循环泵53,再提供高温热水给风机盘管1;所述第四板式换热器43的水,依次经过第八阀门52和第三板式换热器4,此时第九阀门54关闭,第十三阀门62和第十四阀门63开启,经第十三阀门62到地埋管64,利用地埋管64吸热(吸收大地的热量),吸热后依次经过第十四阀门63、第十阀门55、第二循环泵56和第七阀门51,回到第四板式换热器43,可见流经水环回路中的循环水便是机组的低温热源;在运行过程中,所述第二压缩机41、第四板式换热器43、电子膨胀阀42和第五板式换热器44相连通完成循环制热。When the water-water heat pump unit operates in the heating mode in winter: the first valve 45, the second valve 46, the third valve 47 and the fourth valve 48 are closed, the fifth valve 49, the sixth valve 50, the seventh valve The valve 51 and the eighth valve 52 are opened, the cooling water subsystem is closed to save energy, the water in the fan coil unit 1 passes through the fifth valve 49, the fifth plate heat exchanger 44, the sixth valve 50 and the first circulation pump 53 in sequence, Then provide high-temperature hot water to the fan coil unit 1; the water in the fourth plate heat exchanger 43 passes through the eighth valve 52 and the third plate heat exchanger 4 in turn, at this time the ninth valve 54 is closed, and the thirteenth valve 62 and the fourteenth valve 63 are opened, go through the thirteenth valve 62 to the buried pipe 64, use the buried pipe 64 to absorb heat (absorb the heat of the earth), and pass through the fourteenth valve 63 and the tenth valve 55 successively after absorbing heat , the second circulation pump 56 and the seventh valve 51, back to the fourth plate heat exchanger 43, it can be seen that the circulating water flowing through the water loop is the low-temperature heat source of the unit; during operation, the second compressor 41. The fourth plate heat exchanger 43, the electronic expansion valve 42 and the fifth plate heat exchanger 44 are connected to complete the cycle heating.
综上所述,本发明系统为结构简单,使用方便,可以将余热回收进行利用,通过各种子系统的相互配合,不仅可以在夏季供冷和提供热水,也可以在冬季供热和提供热水,满足了用户的需求。To sum up, the system of the present invention is simple in structure, easy to use, and can recover and utilize waste heat. Through the cooperation of various subsystems, it can not only supply cooling and hot water in summer, but also provide heat and hot water in winter. Hot water meets the needs of users.
以上所述,仅为本发明专利较佳的实施例,但本发明专利的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明专利所公开的范围内,根据本发明专利的技术方案及其发明构思加以等同替换或改变,都属于本发明专利的保护范围。The above is only a preferred embodiment of the patent of the present invention, but the scope of protection of the patent of the present invention is not limited thereto. Equivalent replacements or changes to the technical solutions and their inventive concepts all fall within the scope of protection of the invention patent.
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CN104279662A (en) * | 2014-09-22 | 2015-01-14 | 广东技术师范学院 | Cold and heat combined supply water-loop heat pump air conditioning system and realizing method thereof |
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