Directly-heated type heat pump and solar thermal collector combination heating system
Technical field
The utility model relates to solar water heater field, particularly relates to a kind of directly-heated type heat pump and solar thermal collector combination heating system.
Background technology
The use of solar water heating system routine has following several structure: solar energy is used alone; The supporting air source heat pump of solar energy; The supporting coal-burning boiler of solar energy; Solar energy and electrically heated rod support the use; Solar energy and gas fired-boiler use.In above several occupation mode, use amount is maximum, uses energy-saving effect ought be the most significantly that solar energy and air source heat pump support the use this mode.
But, current solar energy and air source heat pump support the use in this structure, the supporting solar energy of the circulating air source heat pump of many employings uses, adopt this combination, when large area uses, adopt multiple attemperater, as comprised heating and thermal insulation water tank, constant temperature attemperater etc., heated respectively by multiple stage source pump simultaneously, when can avoid like this concentrating in the winter time with water, because cold water temperature is low, using amount of hot water is concentrated, and the heating of unit short time can not meet the needs of hot water and occurs the disadvantage that hot water temperature reduces; But in the solar water central heating case of part small-scale hotel, enterprises and institutions, because using amount of hot water is little, when designing multiple attemperater and multiple stage source pump, there will be the situation that cost of investment is excessive.
Utility model content
The technical problem that the utility model solves is to provide a kind of Eco-power combination heating system in conjunction with directly-heated type heat pump and solar thermal collector.
The utility model solves the technical scheme that its technical problem adopts: directly-heated type heat pump and solar thermal collector combination heating system, comprise solar thermal collector, attemperater, heat pump and control system;
Described heat pump has the first water inlet, the second water inlet and heat pump delivery port, described first water inlet is communicated with heat pump feed pipe, described second water inlet is communicated with attemperater respectively by water pipe with heat pump delivery port, and the water pipe be communicated with attemperater at the second water inlet is provided with heat pump cycle water pump;
Solar energy water inlet on described solar thermal collector and solar energy delivery port are communicated with attemperater respectively by water pipe, and the water pipe be communicated with attemperater at solar energy water inlet is provided with solar energy water circulating pump; Water pipe between solar energy water circulating pump with solar energy water inlet is also communicated with solar water supply pipe by threeway;
Heat pump feed pipe and solar water supply pipe are also respectively arranged with magnetic valve; Temperature sensor and liquid level sensor is provided with in attemperater; Solar energy delivery port is also provided with temperature sensor;
Described heat pump, magnetic valve, temperature sensor, liquid level sensor and heat pump cycle water pump are with solar energy circulating pump, be connected with control system respectively.
Further: the water pipe between solar energy water circulating pump and threeway is provided with check-valves.
Further: on the hot water outlet pipe of attemperater, be provided with booster pump.
Further: described liquid level sensor is made up of heat pump liquid level controller and solar energy liquid level controller, and heat pump liquid level controller has high water level end, low water level end and common port.
Further: described control system is PLC control system.
The beneficial effects of the utility model are: the cold water from respective feed pipe supply all can heat by directly-heated type heat pump and solar thermal collector respectively, is then stored in attemperater, ensure that the hot water temperature of attemperater inside; Water in attemperater also can be carried out circulating-heating respectively by corresponding circulating pump according to actual conditions to solar thermal collector by directly-heated type heat pump simultaneously.When hot water demand measures large, directly-heated type heat pump can be opened, directly to hot-water supply in attemperater; And when hot water demand's amount is less, then can stop directly-heated type heat pump, only supplied water by solar thermal collector.Directly-heated type heat pump described in the utility model and solar thermal collector combination heating system, when only adopting an attemperater, cold water can be effectively avoided directly to add attemperater inside, avoid the disadvantage occurring that water temperature reduces, simultaneously owing to not needing to adopt extra attemperater, therefore can be cost-saving, make water system entirety more economically.
Accompanying drawing explanation
Fig. 1 is syndeton schematic diagram described in the utility model;
Fig. 2 is also syndeton schematic diagram described in the utility model;
Be labeled as in figure: solar thermal collector 1; Solar energy water inlet 11; Solar energy delivery port 12; Attemperater 2; Heat pump 3; First water inlet 31; Second water inlet 32; Heat pump delivery port 33; Heat pump feed pipe 4; Water pipe 5; Heat pump cycle water pump 61; Solar energy water circulating pump 62; Booster pump 63; Threeway 7; Solar water supply pipe 8; Magnetic valve 91; Check-valves 92; Gate valve 93; Filter 94; Hot water outlet pipe 10; Liquid level sensor B; Heat pump liquid level controller B1; High water level end B11; Low water level end B12; Common port B13; Solar energy liquid level controller B2; Temperature sensor D1, D2.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
As shown in Figures 1 and 2, directly-heated type heat pump described in the utility model and solar thermal collector combination heating system, comprise solar thermal collector 1, attemperater 2, heat pump 3 and control system; It is characterized in that:
Described heat pump 3 has the first water inlet 31, second water inlet 32 and heat pump delivery port 33, described first water inlet 31 is communicated with heat pump feed pipe 4, described second water inlet 32 is communicated with attemperater 2 respectively by water pipe 5 with heat pump delivery port 33, and the water pipe 5 be communicated with attemperater 2 at the second water inlet 32 is provided with heat pump cycle water pump 61;
Solar energy water inlet 11 on described solar thermal collector 1 and solar energy delivery port 12 are communicated with attemperater 2 respectively by water pipe 5, and the water pipe 5 be communicated with attemperater 2 at solar energy water inlet 11 is provided with solar energy water circulating pump 62; Water pipe 5 between solar energy water circulating pump 62 with solar energy water inlet 12 is also communicated with solar water supply pipe 8 by threeway 7;
Heat pump feed pipe 4 and solar water supply pipe 8 are also respectively arranged with magnetic valve 91; Temperature sensor D2 and liquid level sensor B is provided with in attemperater 2; Solar energy delivery port 12 is also provided with temperature sensor D1;
Described heat pump 3, magnetic valve 91, temperature sensor D1, D2, liquid level sensor B and heat pump cycle water pump 61 are connected with control system respectively with solar energy circulating pump 62.
Heat pump feed pipe 4 feeds cold water by the first water inlet 31 on directly-heated type heat pump 3, after being heated, by heat pump delivery port 33, the hot water after heating is sent into storage in attemperater 2 by directly-heated type heat pump 3; Meanwhile, the water in attemperater 2 also to be pumped in directly-heated type heat pump 3 by the second water inlet 32 by heat pump cycle pump 61 and carries out circulating-heating by directly-heated type heat pump 3.
Solar energy water inlet 11 on solar thermal collector 1 provides the water needing heating by solar water supply pipe 8, also can by solar energy water circulating pump 62 by the water circulation heating in attemperater 2.
Control system by with heat pump 3, magnetic valve 91, temperature sensor D1, the connection between temperature sensor D2, liquid level sensor B, heat pump cycle water pump 61 and solar energy circulating pump 62, can realize corresponding control.And then make corresponding control according to actual conditions; As when water requirement is larger, heat pump 3 can be opened, have heat pump feed pipe 4 to feed cold water, after heating, send into attemperater; And when needing water beam little, only can carry out heating by solar thermal collector 1 and supplying water.Concrete control system can adopt PLC control system.
In addition, check-valves 92 can also be provided with on the water pipe 5 between solar energy water circulating pump 62 and threeway 7.The benefit done like this is, avoids flowing in attemperater 2 between the cold water of solar water supply pipe 8 infeed, causes the water temperature of attemperater 2 inside too low.
In addition, also booster pump 63 can be provided with on the hot water outlet pipe 10 of attemperater 2.The discharge pressure on hot water outlet pipe 10 can be increased like this, and then provide sufficient power for the water side of whole heating system.
In addition, liquid level sensor B can be a sensor detecting liquid level, also can be made up of heat pump liquid level controller B1 and solar energy liquid level controller B2, and heat pump liquid level controller B1 has high water level end B11, low water level end B12 and common port B13.The effect of heat pump liquid level controller B1 is for the control of heat pump 3 provides corresponding parameter, and the data that both control system had detected according to heat pump liquid level controller B1 make corresponding control; And the effect of solar energy liquid level controller B2 provides corresponding parameter for the control of solar thermal collector, the data that namely control system detects according to solar energy liquid level controller B2 make corresponding control.
To sum up, the utility model, according to actual conditions, can be taked separately by solar heat collector to supply heat, or by the combination heat supply of solar thermal collector and heat pump; And solar heat collector to supply heat and heat pump heat supply all can provide cold water by respective independently feed pipe, avoid cold water to enter in attemperater the situation causing water temperature to reduce; Meanwhile, whole heating system can be formed by an attemperater, therefore can be cost-saving, make water system entirety more economically.