CN113587492B - Ground source heat pump with redundant heat source selection and convenient maintenance - Google Patents
Ground source heat pump with redundant heat source selection and convenient maintenance Download PDFInfo
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- 238000012423 maintenance Methods 0.000 title claims abstract description 32
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
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Abstract
Description
技术领域technical field
本发明涉及地源热泵领域,尤其是涉及一种具备冗余热源选择并便于检修的地源热泵。The invention relates to the field of ground source heat pumps, in particular to a ground source heat pump with redundant heat source selection and easy maintenance.
背景技术Background technique
地源热泵系统冷热量的获取来自温度工况较为恒定的岩土层,机组能效比(COP)值保持在4以上,即消耗1kW高品位电能可以得到4kW左右的冷量或热量,运行效率极高;制冷工况下,较之普通中央空调系统,地源热泵空调系统可以节能30%~40%;供暖工况下,较之燃气锅炉地暖可以节能在40%~50%,节能减排显著。The cold and heat of the ground source heat pump system comes from the rock and soil layer with relatively constant temperature conditions, and the energy efficiency ratio (COP) value of the unit is kept above 4, that is, the cooling or heat of about 4kW can be obtained by consuming 1kW of high-grade electric energy, and the operating efficiency Extremely high; under cooling conditions, compared with ordinary central air-conditioning systems, the ground source heat pump air-conditioning system can save energy by 30% to 40%; under heating conditions, compared with gas-fired boiler floor heating, it can save energy by 40% to 50%, saving energy and reducing emissions significantly.
一种在中国专利文献上公开的“地源热泵系统”,其公开号为CN112361658A,公开日期2021-02-12,其包括换热管组、第一循环泵、地源热泵机组、热水器、盘管和第二循环泵,换热管组埋设在土壤内并通过第一水管与第一循环泵连接,第一循环泵通过第一支管与地源热泵机组连接,地源热泵机组通过第二水管与盘管进水端连接,盘管预埋在建筑室内,盘管出水端通过第二支管与第二循环泵连接,第二循环泵通过回流管与换热管组连接。该发明可以有效提升室内制热的效果,但是其热源选择单一,当热源情况不利于地源热泵工作时无法改变热源,同时无法实时监测运行状态,不利于检测系统管路的故障。A "ground source heat pump system" disclosed in Chinese patent literature, its publication number is CN112361658A, and the publication date is 2021-02-12, which includes a heat exchange tube group, a first circulation pump, a ground source heat pump unit, a water heater, a disc pipe and the second circulation pump, the heat exchange tube group is buried in the soil and connected to the first circulation pump through the first water pipe, the first circulation pump is connected to the ground source heat pump unit through the first branch pipe, and the ground source heat pump unit is connected to the ground source heat pump unit through the second water pipe It is connected to the water inlet end of the coil, and the coil is pre-buried in the building room. The water outlet of the coil is connected to the second circulation pump through the second branch pipe, and the second circulation pump is connected to the heat exchange tube group through the return pipe. This invention can effectively improve the effect of indoor heating, but its heat source is single. When the heat source is not conducive to the operation of the ground source heat pump, the heat source cannot be changed. At the same time, the operation status cannot be monitored in real time, which is not conducive to the detection of system pipeline failures.
发明内容Contents of the invention
本发明是为了克服现有技术中地源热泵的热源选择过于单一从而影响工作稳定性和效率,以及检测和维修更换部件不方便的问题,提供了一种具备冗余热源选择并便于检修的地源热泵,通过对地源侧换热器的优化改进,使其同时连接主热源循环和备用热源循环,从而能够达成地源热泵的热源选择和切换的目的;此外通过增加数据收集装置和电磁阀等配置,实时监测运行状态并控制地源热泵的运行和热源切换,便于相关人员的维修更换工作。The purpose of the present invention is to overcome the problem that the heat source selection of the ground source heat pump is too single in the prior art, which affects the working stability and efficiency, and the problem of inconvenient detection, maintenance and replacement of parts, and provides a ground source heat pump with redundant heat source selection and easy maintenance. Source heat pump, by optimizing and improving the heat exchanger on the ground source side, it is connected to the main heat source cycle and the backup heat source cycle at the same time, so that the heat source selection and switching of the ground source heat pump can be achieved; in addition, by adding data collection devices and solenoid valves And other configurations, real-time monitoring of the operating status and control of the ground source heat pump operation and heat source switching, to facilitate the maintenance and replacement of relevant personnel.
为了实现上述目的,本发明采用了以下技术方案:In order to achieve the above object, the present invention adopts the following technical solutions:
一种具备冗余热源选择并便于检修的地源热泵,其特征在于,包括数据采集模块和地源侧换热器;所述数据采集模块采集地源热泵的运行数据;所述地缘侧换热器具有热源选择功能,所述地缘侧换热器连接四通换向阀,所述四通换向阀还连接热泵压缩机两端和用户侧换热器;所述地源侧换热器和用户侧换热器通过节流阀相连;所述地源侧换热器由多个换热模块组成,每个换热模块包含内管和包裹内管的外腔,所述内管是分支状的,可供循环介质流通,所述内管的两端接口都装有电磁阀;所述外腔和所述内管之间的空间可供热源液体流动,所述外腔的每个输入输出接口都装有电磁阀。A ground source heat pump with redundant heat source selection and easy maintenance, characterized in that it includes a data acquisition module and a ground source side heat exchanger; the data acquisition module collects the operating data of the ground source heat pump; the ground side heat exchanger The heat exchanger has a heat source selection function, the ground-side heat exchanger is connected to a four-way reversing valve, and the four-way reversing valve is also connected to both ends of the heat pump compressor and the user-side heat exchanger; the ground-source side heat exchanger and The heat exchanger on the user side is connected through a throttling valve; the heat exchanger on the ground source side is composed of multiple heat exchange modules, each heat exchange module includes an inner tube and an outer cavity that wraps the inner tube, and the inner tube is branched The two ends of the inner tube are equipped with solenoid valves; the space between the outer cavity and the inner tube can be used for the flow of heat source liquid, and each input of the outer cavity The output interfaces are equipped with solenoid valves.
本发明中,四通换向阀用于改变管路途径从而切换地源热泵的制冷和制热两种工作状态;热泵压缩机用于对循环介质的压缩,从而提高经过热泵压缩机的循环介质的压力和温度,并为介质提供循环的动力;用户侧换热器用于循环气体和室内的热交换,通过循环气体的吸热或放热达到室内的制冷或制热效果;节流阀又叫膨胀阀,能起到节流降压和调节流量的作用。数据采集模块可以将地源热泵的运行数据采集整理,为检测维修和热泵的运行状态判断提供数据支持。地源侧换热器进行循环介质和热源液体的热交换,还可以进行热源的切换,选择不同的热源进行工作。In the present invention, the four-way reversing valve is used to change the pipeline path so as to switch between the cooling and heating working states of the ground source heat pump; the heat pump compressor is used to compress the circulating medium, thereby increasing the circulating medium passing through the heat pump compressor. pressure and temperature, and provide circulation power for the medium; the user-side heat exchanger is used for the heat exchange between the circulating gas and the room, and the cooling or heating effect of the room can be achieved through the heat absorption or heat release of the circulating gas; the throttle valve is also called The expansion valve can play the role of throttling and reducing pressure and regulating flow. The data acquisition module can collect and organize the operation data of the ground source heat pump, and provide data support for inspection and maintenance and judgment of the operation status of the heat pump. The heat exchanger on the ground source side performs heat exchange between the circulating medium and the heat source liquid, and can also switch the heat source and select different heat sources for work.
作为优选,所述分枝状内管是由若干根横管和若干根竖管纵横交错形成的网管;网管的输入端是分枝状内管的循环介质输入管,网管的输出端是分枝状内管的循环介质输出管。As a preference, the branched inner pipe is a network pipe formed by criss-crossing several horizontal pipes and several vertical pipes; the input end of the network pipe is the circulating medium input pipe of the branched inner pipe, and the output end of the network pipe is a branch The circulating medium output pipe of the inner pipe.
作为优选,所述外腔包裹住内管并且留有供热源液体流动的空间;所述外腔一端与所述内管的循环介质输入管防水密封相连,周围分布有一号输出接口和二号输出接口;所述外腔另一端与所述内管的循环介质输出管防水密封相连,周围分布有三号输入接口和四号输入接口。As a preference, the outer cavity wraps the inner tube and leaves a space for the heat source liquid to flow; one end of the outer cavity is connected to the circulating medium input pipe of the inner tube in a waterproof and sealed manner, and the first output interface and the second output interface are distributed around it. Output interface; the other end of the outer cavity is connected with the circulating medium output pipe of the inner tube in a waterproof and sealed manner, and there are No. 3 input ports and No. 4 input ports around them.
单个换热模块由分枝状结构的内管和包裹内管的外腔组成,内管采用分枝状结构,可以增大循环介质和热源液体之间的热交换面积,提升热交换效率;外腔按照内管的外形轮廓包裹内管,并且和内管间的间隙距离相同,使得热源液体在内管和外腔间隙流动时可以完全覆盖整个内管的表面,提高有效的热交换面积,提升热交换效果。此外,外腔两端分别和内管的输入管及输出管防水密封相连,既可以防止热源液体的渗漏,也可以是外腔和内管的位置固定,形成一个完整的换热模块。而关于输出接口和输入接口的布置,能够使一号输出接口和三号输入接口处于外腔的相对面,二号输出接口和四号输入接口处于外腔的相对面,从而使得热源液体的循环流动更充分。A single heat exchange module consists of an inner tube with a branched structure and an outer cavity that wraps the inner tube. The inner tube adopts a branched structure, which can increase the heat exchange area between the circulating medium and the heat source liquid, and improve the heat exchange efficiency; The cavity wraps the inner tube according to the outline of the inner tube, and has the same distance as the gap between the inner tubes, so that the heat source liquid can completely cover the surface of the entire inner tube when flowing in the gap between the inner tube and the outer cavity, increasing the effective heat exchange area and improving heat exchange effect. In addition, the two ends of the outer chamber are respectively connected with the input pipe and the outlet pipe of the inner pipe in a waterproof seal, which can prevent the leakage of the heat source liquid, and also can fix the positions of the outer chamber and the inner pipe to form a complete heat exchange module. Regarding the layout of the output interface and the input interface, the No. 1 output interface and the No. 3 input interface can be located on the opposite side of the outer cavity, and the No. 2 output interface and No. 4 input interface can be located on the opposite side of the outer cavity, so that the circulation of the heat source liquid More fluid.
作为优选,所述地源侧换热器中所有内管的循环介质输入管都并联到总循环介质入口;所有内管的循环介质输出管都并联到总循环介质出口。Preferably, the circulation medium input pipes of all the inner pipes in the ground-source side heat exchanger are connected in parallel to the total circulation medium inlet; the circulation medium output pipes of all the inner pipes are connected in parallel to the total circulation medium outlet.
循环介质从总循环介质入口流入后可以分布到每个换热模块的循环介质输入管,从而能够在多个换热模块中同时进行热交换,提高热交换的速度,然后从每个循环介质输出管汇总到总循环介质出口继续进行循环。同时,由于在换热模块的输入输出等接口处都安装有电磁阀,因此可以通过关闭部分换热模块的接口处电磁阀,使得部分换热模块不工作,其余部分继续进行热交换工作。这种方式可以使相关人员在进行地源热泵的检修和维护工作时,地源热泵依然能够对室内进行制冷或制热操作,同时换热模块的相对独立也能便于相关人员针对特定部分进行维修和更换,更加方便。After the circulation medium flows in from the total circulation medium inlet, it can be distributed to the circulation medium input pipe of each heat exchange module, so that heat exchange can be performed simultaneously in multiple heat exchange modules, and the speed of heat exchange can be increased, and then output from each circulation medium The pipes are collected to the outlet of the total circulating medium to continue the circulation. At the same time, since electromagnetic valves are installed at the input and output interfaces of the heat exchange modules, it is possible to close the electromagnetic valves at the interfaces of some heat exchange modules, so that some heat exchange modules do not work, and the rest continue to perform heat exchange work. In this way, the ground source heat pump can still perform indoor cooling or heating operations when relevant personnel are performing inspection and maintenance work on the ground source heat pump. At the same time, the relative independence of the heat exchange module can also facilitate relevant personnel to perform maintenance on specific parts. And replacement, more convenient.
作为优选,所述地源侧换热器中所有外腔的一号输出接口都并联到一号热源液体总接口;所有外腔的二号输出接口都并联到二号热源液体总接口;所有外腔的三号输入接口都并联到三号热源液体总接口;所有外腔的四号输入接口都并联到四号热源液体总接口。As a preference, the No. 1 output interfaces of all external chambers in the ground source side heat exchanger are connected in parallel to the No. 1 heat source liquid general interface; the No. 2 output interfaces of all external chambers are connected in parallel to the No. 2 heat source liquid general interface; The No. 3 input interface of the cavity is connected in parallel to the No. 3 heat source liquid main interface; the No. 4 input interface of all external chambers is connected in parallel to the No. 4 heat source liquid main interface.
地源侧换热器的所有换热模块中,所有外腔输入输出接口的连接方式同样和内管的输入输出接口相同,并联汇总到一号热源液体总接口、二号热源液体总接口、三号热源液体总接口和四号热源液体总接口。当想要停止某部分换热模块的工作时,在关闭之前内管输入输出口电子阀的同时,可以继续关闭外腔输入输出接口和热源液体总出入口之间的电磁阀,从而将这部分换热模块从整个地源侧换热器中隔离出来,之后对这部分换热模块进行的操作就不会影响整个地源侧换热器。使得地源侧换热器在工作中的同时也能进行检修更换等维护。In all the heat exchange modules of the ground source side heat exchanger, the connection mode of all the input and output interfaces of the outer chamber is the same as that of the inner tube, and they are connected in parallel to the No. 1 heat source liquid general interface, the No. 2 heat source liquid general No. heat source liquid general interface and No. 4 heat source liquid general interface. When you want to stop the work of a certain part of the heat exchange module, while closing the electronic valve at the input and output ports of the inner tube, you can continue to close the solenoid valve between the input and output ports of the outer cavity and the general inlet and outlet of the heat source liquid, so as to replace this part. The thermal module is isolated from the entire ground-source side heat exchanger, and subsequent operations on this part of the heat exchange module will not affect the entire ground-source side heat exchanger. This enables the ground source side heat exchanger to be repaired and replaced while it is working.
作为优选,所述地源侧换热器中,一号热源液体总接口和三号热源液体总接口连接主热源进行循环;二号热源液体总接口和四号热源液体总接口连接备用热源进行循环。As a preference, in the ground source side heat exchanger, the No. 1 heat source liquid main interface and the No. 3 heat source liquid main interface are connected to the main heat source for circulation; the No. 2 heat source liquid main interface and the No. 4 heat source liquid main interface are connected to the backup heat source for circulation .
在切换热源时,导通一号和三号热源液体总接口的电磁阀,关闭二号和四号热源液体总接口的电磁阀可以使换热器连通主热源进行循环;关闭一号和三号热源液体总接口的电磁阀,导通二号和四号热源液体总接口的电磁阀可以使换热器连通备用热源进行循环。When switching the heat source, turn on the solenoid valves of No. 1 and No. 3 heat source liquid main interfaces, and close the solenoid valves of No. 2 and No. 4 heat source liquid main interfaces to make the heat exchanger connect to the main heat source for circulation; close No. 1 and No. 3 The solenoid valve of the heat source liquid main interface, and the solenoid valve of the No. 2 and No. 4 heat source liquid main interface can make the heat exchanger communicate with the standby heat source for circulation.
作为优选,所述数据采集模块包括温度传感器,流量传感器和电能表。一个温度传感器和一个流量传感器组成一个温度流量检测组件,分别接在用户侧换热器的输入口和输出口、地源侧换热器的输入口和输出口,用于检测循环介质和热源液体输入输出的温度和流量,根据其数据变化判断热泵工作状态及可能有问题的部分;电能表分别接在热泵压缩机、主热源水泵和备用热源水泵附近,测量其消耗的电量,作为计算能效比判断的依据。Preferably, the data acquisition module includes a temperature sensor, a flow sensor and an electric energy meter. A temperature sensor and a flow sensor form a temperature and flow detection component, which are respectively connected to the input port and output port of the heat exchanger on the user side and the input port and output port of the heat exchanger on the ground source side to detect circulating medium and heat source liquid Input and output temperature and flow, judge the working status of the heat pump and the parts that may have problems according to the data changes; the electric energy meter is connected to the heat pump compressor, the main heat source water pump and the backup heat source water pump respectively, and measures the power consumed by them as a calculation of energy efficiency ratio basis for judgment.
作为优选,所述地源热泵还包括控制中心,所述控制中心自动分析工作数据,控制制冷和制热模式的切换,控制热源的选择,还能通过控制电磁阀的通断隔离换热模块。Preferably, the ground source heat pump further includes a control center, which automatically analyzes working data, controls the switching of cooling and heating modes, controls the selection of heat sources, and can also isolate the heat exchange module by controlling the on and off of the solenoid valve.
控制中心控制电磁阀的通断,通过电磁阀的通断使地源侧换热器连接主热源或者连接备用热源来达到热源选择的目的。此外,控制中心将数据采集模块的数据和预设的标准阈值对比分析,判断地源热泵的工作状态以及各个部分的运行情况,以便于相关人员对地源热泵的维护和检修。The control center controls the on-off of the solenoid valve, and through the on-off of the solenoid valve, the heat exchanger on the ground source side is connected to the main heat source or connected to the backup heat source to achieve the purpose of heat source selection. In addition, the control center compares and analyzes the data of the data acquisition module with the preset standard threshold to judge the working status of the ground source heat pump and the operation of each part, so as to facilitate the maintenance and repair of the ground source heat pump by relevant personnel.
本发明具有以下有益效果:通过对地源侧换热器中换热模块的优化改进,采用分枝状结构的内管和同时连接主热源和备用热源的外腔,使得地源侧换热器具有热源选择功能;通过设置在换热模块输入输出接口的电磁阀,利用电磁阀的开启和关闭来灵活控制热源的切换;在系统多出设立温度计、流量计和电能表,能实时采集系统运行的数据,判断工作状态,有利于设备检修;地源侧换热器由多个相对独立的换热模块并联构成,通过电磁阀的关闭使部分模块被隔离出换热器,既能在热泵工作时对这部分模块进行检修等操作,也便于对换热模块的更换。The invention has the following beneficial effects: through the optimization and improvement of the heat exchange module in the ground source side heat exchanger, the inner tube with a branched structure and the outer cavity connecting the main heat source and the backup heat source at the same time make the ground source side heat exchanger It has the function of heat source selection; through the solenoid valve set at the input and output interface of the heat exchange module, the switching of the heat source can be flexibly controlled by the opening and closing of the solenoid valve; thermometers, flow meters and electric energy meters are installed in the system to collect real-time system operation The data can be used to judge the working status, which is conducive to equipment maintenance; the ground source side heat exchanger is composed of multiple relatively independent heat exchange modules connected in parallel, and some modules are isolated from the heat exchanger by closing the solenoid valve, which can not only work in the heat pump It is also convenient to perform maintenance and other operations on this part of the modules, and it is also convenient to replace the heat exchange modules.
附图说明Description of drawings
图1是本发明中地源侧换热器的换热单元示意图;Fig. 1 is a schematic diagram of the heat exchange unit of the ground source side heat exchanger in the present invention;
图2是本发明中地源侧换热器的换热单元侧视图;Fig. 2 is a side view of the heat exchange unit of the ground source side heat exchanger in the present invention;
图3是本发明中地源侧换热器的示意图;Fig. 3 is the schematic diagram of ground source side heat exchanger in the present invention;
图4是本发明地源热泵制冷模式的示意图;Fig. 4 is a schematic diagram of the ground source heat pump cooling mode of the present invention;
图5是本发明地源热泵制热模式的示意图;Fig. 5 is a schematic diagram of the heating mode of the ground source heat pump of the present invention;
图中:1、用户侧换热器;2、四通换向阀;3、热泵压缩机;4、地源侧换热器;5、节流阀;6、温度流量检测组件;7、电能表;8、电磁阀;9、换热模块;10、水泵;41、总循环介质入口;42、总循环介质出口;43、一号热源液体总接口;44、四号热源液体总接口;45、二号热源液体总接口;46、三号热源液体总接口;91、循环介质输入管;92、循环介质输出管;93、一号输出接口;94、二号输出接口;95、四号输出接口;96、三号输出接口;97、外腔;98、内管;981、横管;982、竖管。In the figure: 1. User side heat exchanger; 2. Four-way reversing valve; 3. Heat pump compressor; 4. Ground source side heat exchanger; 5. Throttle valve; 6. Temperature flow detection component; 7. Electric energy Table; 8. Solenoid valve; 9. Heat exchange module; 10. Water pump; 41. Inlet of total circulating medium; 42. Outlet of total circulating medium; 43. General interface of No. 1 heat source liquid; 44. General interface of No. 4 heat source liquid; 45 , No. 2 heat source liquid main interface; 46, No. 3 heat source liquid main interface; 91, circulating medium input pipe; 92, circulating medium output pipe; 93, No. 1 output interface; 94, No. 2 output interface; 95, No. 4 output Interface; 96, No. 3 output interface; 97, outer chamber; 98, inner pipe; 981, horizontal pipe; 982, vertical pipe.
具体实施方式Detailed ways
下面结合附图和具体实施方式对本发明做进一步的描述。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
如图3所示,一种具备冗余热源选择并便于检修的地源热泵,包括四通换向阀、热泵压缩机、用户侧换热器和节流阀,还包括数据采集模块和具有热源选择功能的地源侧换热器;数据采集模块采集地源热泵的运行数据;四通换向阀分别连接热泵压缩机两端、用户侧换热器和地源侧换热器,地源侧换热器和用户侧换热器通过节流阀相连;地源侧换热器由多个换热模块组成,每个换热模块包含分枝状内管和包裹内管的外腔,分支状内管可供循环介质流通,其内管的两端接口都装有电磁阀;腔和所述内管之间的空间可供热源液体流动,外腔的每个输入输出接口都装有电磁阀。As shown in Figure 3, a ground source heat pump with redundant heat source selection and easy maintenance includes a four-way reversing valve, a heat pump compressor, a user-side heat exchanger and a throttle valve, and also includes a data acquisition module and a heat source The ground source side heat exchanger with optional function; the data acquisition module collects the operation data of the ground source heat pump; the four-way reversing valve is respectively connected to both ends of the heat pump compressor, the user side heat exchanger and the ground source side heat The heat exchanger and the heat exchanger on the user side are connected through a throttling valve; the heat exchanger on the ground source side is composed of multiple heat exchange modules, and each heat exchange module contains a branched inner tube and an outer cavity that wraps the inner tube. The inner tube can be circulated by the circulating medium, and the two ends of the inner tube are equipped with electromagnetic valves; the space between the cavity and the inner tube can be used for the flow of heat source liquid, and each input and output interface of the outer cavity is equipped with electromagnetic valves. valve.
如图1所示,分枝状内管是由六根横管和六根竖管纵横交错形成的网管;网管的输入端是分枝状内管的循环介质输入管,网管的输出端是分枝状内管的循环介质输出管。外腔包裹住内管并且两者间间距相同,留有供热源液体流动的空间,外腔一端与内管的循环介质输入管防水密封相连,其左右两侧分布有一号输出接口和二号输出接口;另一端与内管的循环介质输出管防水密封相连,其左右两侧分布有三号输入接口和四号输入接口。As shown in Figure 1, the branched inner pipe is a network pipe formed by crisscrossing six horizontal pipes and six vertical pipes; the input end of the network pipe is the circulating medium input pipe of the branched inner pipe, and the output end of the network pipe is a branched pipe. Circulating medium output pipe of the inner pipe. The outer chamber wraps the inner pipe and the distance between the two is the same, leaving space for the heat source liquid to flow. One end of the outer chamber is connected with the circulating medium input pipe of the inner pipe in a waterproof and sealed manner. Output interface; the other end is connected with the circulating medium output pipe of the inner pipe in a waterproof and sealed manner, and there are No. 3 input ports and No. 4 input ports distributed on the left and right sides.
如图2所示,地源侧换热器中所有内管的循环介质输入管都并联到总循环介质入口;所有内管的循环介质输出管都并联到总循环介质出口。地源侧换热器中所有外腔的一号输出接口都并联到一号热源液体总接口;所有外腔的二号输出接口都并联到二号热源液体总接口;所有外腔的三号输入接口都并联到三号热源液体总接口;所有外腔的四号输入接口都并联到四号热源液体总接口。地源侧换热器中,一号热源液体总接口和三号热源液体总接口连接主热源进行循环;二号热源液体总接口和四号热源液体总接口连接备用热源进行循环。As shown in Figure 2, the circulation medium input pipes of all inner pipes in the ground source side heat exchanger are connected in parallel to the total circulation medium inlet; the circulation medium output pipes of all inner pipes are connected in parallel to the total circulation medium outlet. The No. 1 output ports of all external chambers in the ground source side heat exchanger are connected in parallel to the No. 1 heat source liquid general port; the No. 2 output ports of all external chambers are connected in parallel to the No. 2 heat source liquid general port; The interfaces are all connected in parallel to the general interface of No. 3 heat source liquid; the No. 4 input interfaces of all external chambers are connected in parallel to the general interface of No. 4 heat source liquid. In the heat exchanger on the ground source side, the No. 1 heat source liquid main interface and No. 3 heat source liquid main interface are connected to the main heat source for circulation; the No. 2 heat source liquid main interface and No. 4 heat source liquid main interface are connected to the backup heat source for circulation.
数据采集模块还包括温度传感器,流量传感器和电能表。一个温度传感器和一个流量传感器组成一个温度流量检测组件,分别接在用户侧换热器的输入口和输出口、地源侧换热器的输入口和输出口,用于检测循环介质和热源液体输入输出的温度和流量,根据其数据变化判断热泵工作状态及可能有问题的部分;电能表分别接在热泵压缩机、主热源水泵和备用热源水泵附近,测量其消耗的电量,作为计算能效比判断的依据。The data acquisition module also includes a temperature sensor, a flow sensor and a power meter. A temperature sensor and a flow sensor form a temperature and flow detection component, which are respectively connected to the input port and output port of the heat exchanger on the user side and the input port and output port of the heat exchanger on the ground source side to detect circulating medium and heat source liquid Input and output temperature and flow, judge the working status of the heat pump and the parts that may have problems according to the data changes; the electric energy meter is connected to the heat pump compressor, the main heat source water pump and the backup heat source water pump respectively, and measures the power consumed by them as a calculation of energy efficiency ratio basis for judgment.
地源热泵还包括控制中心,所述控制中心自动分析工作数据,控制制冷和制热模式的切换,控制热源的选择,还能通过控制电磁阀的通断隔离换热模块,便于检修更换。控制中心控制电磁阀的通断,通过电磁阀的通断使地源侧换热器连接主热源或者连接备用热源来达到热源选择的目的。此外,控制中心将数据采集模块的数据和预设的标准阈值对比分析,判断地源热泵的工作状态以及各个部分的运行情况,以便于相关人员对地源热泵的维护和检修。The ground source heat pump also includes a control center, which automatically analyzes working data, controls the switching of cooling and heating modes, controls the selection of heat sources, and can also isolate the heat exchange module by controlling the on and off of the solenoid valve, which is convenient for maintenance and replacement. The control center controls the on-off of the solenoid valve, and through the on-off of the solenoid valve, the heat exchanger on the ground source side is connected to the main heat source or connected to the backup heat source to achieve the purpose of heat source selection. In addition, the control center compares and analyzes the data of the data acquisition module with the preset standard threshold to judge the working status of the ground source heat pump and the operation of each part, so as to facilitate the maintenance and repair of the ground source heat pump by relevant personnel.
本发明中,四通换向阀用于改变管路途径从而切换地源热泵的制冷和制热两种工作状态;热泵压缩机用于对循环介质的压缩,从而提高经过热泵压缩机的循环介质的压力和温度,并为介质提供循环的动力;用户侧换热器用于循环气体和室内的热交换,通过循环气体的吸热或放热达到室内的制冷或制热效果;节流阀又叫膨胀阀,能起到节流降压和调节流量的作用。数据采集模块将地源热泵的运行数据采集整理,为检测维修和热泵的运行状态判断提供数据支持。In the present invention, the four-way reversing valve is used to change the pipeline path so as to switch between the cooling and heating working states of the ground source heat pump; the heat pump compressor is used to compress the circulating medium, thereby increasing the circulating medium passing through the heat pump compressor. pressure and temperature, and provide circulation power for the medium; the user-side heat exchanger is used for the heat exchange between the circulating gas and the room, and the cooling or heating effect of the room can be achieved through the heat absorption or heat release of the circulating gas; the throttle valve is also called The expansion valve can play the role of throttling and reducing pressure and regulating flow. The data acquisition module collects and organizes the operation data of the ground source heat pump, and provides data support for inspection and maintenance and judgment of the operation status of the heat pump.
具有热源选择功能的地源侧换热器是本发明的重要部分,其能够通过安装在每个接口的电磁阀的通断来控制进行主热源液体循环的热交换或者备用热源液体循环的热交换。与此同时,因为地源侧换热器由多个换热模块组成,因此通过电磁阀的通断,使部分换热模块工作,其余换热模块不工作或者进行维护;同时也能使部分换热模块进行主热源循环,还有一部分换热模块进行备用热源循环;使得换热器热源选择更加灵活,不会因为单一的热源问题影响地源热泵的工作性能,也能在必要时调节两个热源的循环比例提高地源热泵的工作效率。The ground source side heat exchanger with heat source selection function is an important part of the present invention, which can control the heat exchange of the main heat source liquid circulation or the backup heat source liquid circulation heat exchange through the on-off of the solenoid valve installed at each interface . At the same time, because the ground-source side heat exchanger is composed of multiple heat exchange modules, some of the heat exchange modules can be operated by switching on and off the solenoid valve, and the rest of the heat exchange modules can not work or be maintained; The heat module performs the main heat source circulation, and some heat exchange modules perform the backup heat source circulation; this makes the heat source selection of the heat exchanger more flexible, and will not affect the performance of the ground source heat pump due to a single heat source problem, and can also adjust two heat sources when necessary. The circulation ratio of the heat source improves the working efficiency of the ground source heat pump.
单个换热模块由分枝状结构的内管和包裹内管的外腔组成,内管采用分枝状结构,能增大循环介质和热源液体之间的热交换面积,提升热交换效率;外腔按照内管的外形轮廓包裹内管,并且和内管间的间隙距离相同,使得热源液体在内管和外腔间隙流动时能完全覆盖整个内管的表面,提高有效的热交换面积,提升热交换效果。此外,外腔两端分别和内管的输入管及输出管防水密封相连,既防止热源液体的渗漏,也使外腔和内管的位置固定,形成一个完整的换热模块。而关于输出接口和输入接口的布置,能够使一号输出接口和三号输入接口处于外腔的相对面,二号输出接口和四号输入接口处于外腔的相对面,从而使得热源液体的循环流动更充分。A single heat exchange module is composed of an inner tube with a branched structure and an outer cavity that wraps the inner tube. The inner tube adopts a branched structure, which can increase the heat exchange area between the circulating medium and the heat source liquid, and improve the heat exchange efficiency; The cavity wraps the inner tube according to the outline of the inner tube, and has the same distance as the gap between the inner tubes, so that the heat source liquid can completely cover the surface of the entire inner tube when flowing in the gap between the inner tube and the outer cavity, increasing the effective heat exchange area and improving heat exchange effect. In addition, the two ends of the outer chamber are respectively connected with the input pipe and the outlet pipe of the inner pipe in a waterproof seal, which not only prevents the leakage of the heat source liquid, but also fixes the positions of the outer chamber and the inner pipe to form a complete heat exchange module. Regarding the layout of the output interface and the input interface, the No. 1 output interface and the No. 3 input interface can be located on the opposite side of the outer cavity, and the No. 2 output interface and No. 4 input interface can be located on the opposite side of the outer cavity, so that the circulation of the heat source liquid More fluid.
循环介质从总循环介质入口流入后能分布到每个换热模块的循环介质输入管,从而能够在多个换热模块中同时进行热交换,提高热交换的速度,然后从每个循环介质输出管汇总到总循环介质出口继续进行循环。同时,由于在换热模块的输入输出等接口处都安装有电磁阀,因此能通过关闭部分换热模块的接口处电磁阀,使得部分换热模块不工作,其余部分继续进行热交换工作。这种方式能使相关人员在进行地源热泵的检修和维护工作时,地源热泵依然能够对室内进行制冷或制热操作,同时换热模块的相对独立也能便于相关人员针对特定部分进行维修和更换,更加方便。After the circulating medium flows in from the total circulating medium inlet, it can be distributed to the circulating medium input pipe of each heat exchange module, so that heat exchange can be performed in multiple heat exchange modules at the same time, and the speed of heat exchange can be increased, and then output from each circulating medium The pipes are collected to the outlet of the total circulating medium to continue the circulation. At the same time, since electromagnetic valves are installed at the input and output interfaces of the heat exchange modules, it is possible to close the electromagnetic valves at the interfaces of some heat exchange modules, so that some heat exchange modules do not work, and the rest continue to perform heat exchange work. This method enables the relevant personnel to perform maintenance work on the ground source heat pump, while the ground source heat pump can still perform indoor cooling or heating operations. At the same time, the relative independence of the heat exchange module can also facilitate relevant personnel to perform maintenance on specific parts. And replacement, more convenient.
地源侧换热器的所有换热模块中,所有外腔输入输出接口的连接方式同样和内管的输入输出接口相同,并联汇总到一号热源液体总接口、二号热源液体总接口、三号热源液体总接口和四号热源液体总接口。当想要停止某部分换热模块的工作时,在关闭之前内管输入输出口电子阀的同时,能继续关闭外腔输入输出接口和热源液体总出入口之间的电磁阀,从而将这部分换热模块从整个地源侧换热器中隔离出来,之后对这部分换热模块进行的操作就不会影响整个地源侧换热器。使得地源侧换热器在工作中的同时也能进行检修更换等维护。In all the heat exchange modules of the ground source side heat exchanger, the connection mode of all the input and output interfaces of the outer chamber is the same as that of the inner tube, and they are connected in parallel to the No. 1 heat source liquid general interface, the No. 2 heat source liquid general No. heat source liquid general interface and No. 4 heat source liquid general interface. When you want to stop the work of a certain part of the heat exchange module, while closing the electronic valve at the input and output ports of the inner tube, you can continue to close the solenoid valve between the input and output ports of the outer cavity and the general inlet and outlet of the heat source liquid, so as to replace this part. The thermal module is isolated from the entire ground-source side heat exchanger, and subsequent operations on this part of the heat exchange module will not affect the entire ground-source side heat exchanger. This enables the ground source side heat exchanger to be repaired and replaced while it is working.
在使用主热源进行换热工作时,热源液体在主热源放热或吸热后,通过一号热源液体总接口和三号热源液体总接口流入流出地源侧换热器再回到主热源;在使用备用热源进行换热工作时,热源液体在备用热源放热或吸热后,通过二号热源液体总接口和四号热源液体总接口流入流出地源侧换热器在回到备用热源。在切换热源时,导通一号和三号热源液体总接口的电磁阀,关闭二号和四号热源液体总接口的电磁阀使换热器连通主热源进行循环;关闭一号和三号热源液体总接口的电磁阀,导通二号和四号热源液体总接口的电磁阀使换热器连通备用热源进行循环。When the main heat source is used for heat exchange work, the heat source liquid flows into and out of the heat exchanger on the ground source side through the No. 1 heat source liquid main interface and No. 3 heat source liquid main interface after the main heat source releases heat or absorbs heat, and then returns to the main heat source; When the standby heat source is used for heat exchange, the heat source liquid flows into and out of the heat exchanger on the ground source side through the No. 2 heat source liquid main interface and the No. 4 heat source liquid main interface after the standby heat source releases or absorbs heat, and then returns to the standby heat source. When switching the heat source, turn on the solenoid valves of the No. 1 and No. 3 heat source liquid main interfaces, close the solenoid valves of the No. 2 and No. 4 heat source liquid main interfaces to make the heat exchanger connect to the main heat source for circulation; turn off No. 1 and No. 3 heat sources The solenoid valve of the main liquid interface is connected to the solenoid valve of the liquid main interface of No. 2 and No. 4 heat sources, so that the heat exchanger is connected to the backup heat source for circulation.
本发明中地源热泵制冷模式如图3所示,其过程为:用户侧换热器(循环介质蒸发吸收室内的热量)—四通换向阀—热泵压缩机(压缩使循环介质升温升压)—四通换向阀—地源侧换热器(循环介质和热源液体进行充分热交换,循环介质放热,热源液体吸热)—节流阀(节流降压)—用户侧换热器(循环介质继续吸收热量)。The refrigeration mode of the ground source heat pump in the present invention is shown in Figure 3, and its process is: user-side heat exchanger (the circulating medium evaporates and absorbs heat in the room) - four-way reversing valve - heat pump compressor (compresses to increase the temperature and pressure of the circulating medium )—four-way reversing valve—ground source side heat exchanger (the circulating medium and the heat source liquid conduct sufficient heat exchange, the circulating medium releases heat, and the heat source liquid absorbs heat)—throttle valve (throttling and reducing pressure)—user side heat exchange device (the circulating medium continues to absorb heat).
本发明中地源热泵制热模式如图4所示,其过程为:地源侧换热器(循环介质和热源液体热交换,循环介质吸收热量,热源液体放热)—四通换向阀—热泵压缩机(压缩使循环介质升温升压)—四通换向阀—用户侧换热器(循环介质散热提高室内温度)—节流阀(节流降压)—地源侧换热器(循环介质继续吸收热量)。The heating mode of the ground source heat pump in the present invention is shown in Figure 4, and the process is: ground source side heat exchanger (circulation medium and heat source liquid heat exchange, circulation medium absorbs heat, heat source liquid releases heat) - four-way reversing valve —Heat pump compressor (compression increases the temperature and pressure of the circulating medium)—Four-way reversing valve—User-side heat exchanger (circulating medium dissipates heat to increase indoor temperature)—Throttle valve (throttling and reducing pressure)—Ground source side heat exchanger (The circulating medium continues to absorb heat).
本发明的实施例中,采用封闭式的循环方式,以水作为主热源和备用热源中的热源液体承载热量在热源和地源侧换热器间循环。其中主热源采用直埋式,占地面积小,热源位置在距地面较深处,热源周围稳定;备用热源采用水平埋管方式,距离地面较近,在安装后对其进行后续操作较为方便,有利于采用和更换成其他备用热源;备用热源还可以采用地表水如流动的河水、湖水,地下水等,适用于水资源丰富的用户作为备用热源的选择。In the embodiment of the present invention, a closed circulation method is adopted, and water is used as the main heat source and the heat source liquid in the backup heat source carries heat to circulate between the heat source and the ground source side heat exchanger. Among them, the main heat source adopts the direct buried type, which occupies a small area, and the position of the heat source is relatively deep from the ground, and the surrounding of the heat source is stable; the backup heat source adopts the method of horizontal buried pipe, which is relatively close to the ground, and it is more convenient to carry out follow-up operations after installation. It is conducive to the adoption and replacement of other backup heat sources; the backup heat source can also use surface water such as flowing river water, lake water, groundwater, etc., which is suitable for users with abundant water resources as the choice of backup heat source.
下面对本发明中地源热泵如何在工作运行的同时可以进行检修做进一步说明,以地源热泵制冷模式为例,其进行用户侧换热器—四通换向阀—热泵压缩机—四通换向阀—地源侧换热器—节流阀—用户侧换热器的循环。The following is a further description of how the ground source heat pump in the present invention can be overhauled while working and running. Taking the ground source heat pump refrigeration mode as an example, it performs user-side heat exchanger-four-way reversing valve-heat pump compressor-four-way switching Direction valve-ground source side heat exchanger-throttle valve-user side heat exchanger cycle.
当地源侧换热器部分被分析出有故障时或者维修人员要对地源侧换热器进行维护更换时,由于地源侧换热器由多个换热模块构成,可以将换热模块分成第一组、第二组和第三组轮流检测。初始状态时,第一组、第二组和第三组换热模块都处于工作状态,首先通过关闭第一组换热模块所有接口的电磁阀,将第一组换热模块从换热器中隔离出来,对第一组的换热模块进行维修或者更换操作,与此同时,第二组和第三组换热模块仍然在工作中使地源热泵制冷;对第一组换热模块维修完成后,重新导通电磁阀将第一组换热模块接入换热器中,并将第二组换热模块从换热器中隔离,对第二组换热模块进行维修更换;与前面相同的,导通第二组换热模块的电磁阀,关闭第三组换热模块的电磁阀,对第三组换热模块进行维修更换。整个流程过后就完成了对地源侧换热器的维修和更换。When the part of the heat exchanger on the ground source side is analyzed to be faulty or when maintenance personnel want to maintain and replace the heat exchanger on the ground source side, since the heat exchanger on the ground source side is composed of multiple heat exchange modules, the heat exchange modules can be divided into The first group, the second group and the third group take turns to detect. In the initial state, the first group, the second group and the third group of heat exchange modules are all in working state. Firstly, by closing the solenoid valves of all interfaces of the first group of heat exchange modules, the first group of heat exchange modules is removed from the heat exchanger. Isolate and repair or replace the heat exchange modules of the first group. At the same time, the second and third heat exchange modules are still working to cool the ground source heat pump; the maintenance of the first group of heat exchange modules is completed Finally, turn on the solenoid valve again to connect the first group of heat exchange modules into the heat exchanger, isolate the second group of heat exchange modules from the heat exchanger, and repair and replace the second group of heat exchange modules; the same as before , turn on the solenoid valves of the second group of heat exchange modules, close the solenoid valves of the third group of heat exchange modules, and perform maintenance and replacement of the third group of heat exchange modules. After the whole process, the repair and replacement of the ground source side heat exchanger is completed.
当不是地源侧换热器出现问题时,维修人员可以携带包含有用户侧换热器、四通换向阀、热泵压缩机和节流阀等相同功能的机柜,将用户的地源热泵系统中地源侧换热器的总循环介质出入口通过电磁阀与系统隔离,然后连接到维修人员携带的机柜中,使机柜和地源侧换热器形成临时的地源热泵对室内进行制冷操作。与此同时,维修人员可以对原有的有问题的地源热泵系统进行维修更换操作。When there is no problem with the heat exchanger on the ground source side, maintenance personnel can carry a cabinet with the same functions as the heat exchanger on the user side, four-way reversing valve, heat pump compressor and throttle valve, and replace the user's ground source heat pump system The inlet and outlet of the total circulation medium of the heat exchanger on the ground source side are isolated from the system through a solenoid valve, and then connected to the cabinet carried by the maintenance personnel, so that the cabinet and the heat exchanger on the ground source side form a temporary ground source heat pump to cool the room. At the same time, maintenance personnel can repair and replace the original problematic ground source heat pump system.
在初始的制冷模式进行中,地源热泵采用直埋式的主热源作为放热对象,备用热泵处在备用状态,当检测到主热源中的直埋管路出现问题时或者维修人员要对主热源的管路进行检修时,关闭所有主热源与地源侧换热器之间的电磁阀(即一号热源液体总接口和三号热源液体总接口上的所有电磁阀),将主热源管路与地源热泵系统隔离,同时导通备用热源与地源侧换热器之间的电磁阀(即二号热源液体总接口和三号热源液体总接口上的所有电磁阀),将备用热源管路与地源热泵系统连接,此时的制冷模式时,地源热泵将备用热源作为放热对象,仍然可以进行工作。而维修人员也可以同时对主热源管路进行检修,不会影响地源热泵的制冷工作状态。During the initial cooling mode, the ground source heat pump uses the directly buried main heat source as the heat release object, and the standby heat pump is in a standby state. When a problem is detected in the direct buried pipeline in the main heat source or the maintenance personnel have to repair When the heat source pipeline is overhauled, close all the solenoid valves between the main heat source and the heat exchanger on the ground source side (that is, all the solenoid valves on the No. The road is isolated from the ground source heat pump system, and at the same time, the solenoid valve between the backup heat source and the ground source side heat exchanger (that is, all the solenoid valves on the second heat source liquid general interface and the third heat source liquid general interface) is turned on, and the standby heat source The pipeline is connected to the ground source heat pump system. In the cooling mode at this time, the ground source heat pump uses the backup heat source as the heat release object and can still work. The maintenance personnel can also overhaul the main heat source pipeline at the same time, which will not affect the refrigeration working state of the ground source heat pump.
上述实施例是对本发明的具体说明和描述,便于理解,并不是对本发明的任何限制,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。The above-mentioned embodiments are specific illustrations and descriptions of the present invention, which are easy to understand and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the present invention. within the scope of protection.
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