CN105066236A - Hot water system and water heating method - Google Patents
Hot water system and water heating method Download PDFInfo
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- CN105066236A CN105066236A CN201510580171.0A CN201510580171A CN105066236A CN 105066236 A CN105066236 A CN 105066236A CN 201510580171 A CN201510580171 A CN 201510580171A CN 105066236 A CN105066236 A CN 105066236A
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Abstract
The invention discloses a hot water system and a water heating method, and relates to the field of hot water projects. The problem that the water outlet temperature of a water storage tank is not stable when a user uses water continuously is solved. The hot water system comprises a first hot water device, a second hot water device and a water storage device, wherein the water outlet end of the first hot water device can be communicated with the second hot water device, the water storage device can be communicated with the second hot water device and the first hot water device, and the water storage device is further provided with the water outlet end and the water inlet end. The water heating method comprises the following steps that the first hot water device receives water input from the water storage device; the second hot water device receives water heated by the first hot water device; the temperature of water entering the second hot water device is judged; when the temperature of the water entering the second hot water device does not meet the first preset condition, the second hot water device is turned on, and the water heated through the second hot water device is conveyed to the water storage device. According to the hot water system and the water heating method, the stability of the water outlet temperature of the water storage tank is improved.
Description
Technical field
The present invention relates to hot water engineering field, particularly a kind of hot-water heating system and water heating method.
Background technology
Heat pump techniques is the new energy technology received much attention in the whole world in recent years.It is that one can obtain low grade heat energy from natural air, water or soil, and through electric power acting, providing can by the device of people's high-grade heat energy used.The outstanding feature of heat pump is exactly that efficiency is high, and energy-saving effect is remarkable, and mean consumption 1W electric energy can perhaps 3-4W heat energy, and it is without any waste gas and sewage discharge, is conducive to the ecological balance.Due to its above-mentioned efficient energy-saving, environmental protection, be slowly applied to various field at present.
At present, in hotel, restaurant, school, factory, bath center, ordinary residence, villa, the unit such as army be large due to their outputs, generally all extensively adopts heat pump techniques to carry out hot-water supply, to save the energy.When normal balanced water, the storage tank tonnage of above-mentioned place apolegamy can meet the supply of hot water, and the heat pump power of apolegamy is also enough to meet the heating of newly entering cold water, so, under the isorrheic state of turnover, the water temperature in whole storage tank can be kept to be in a certain OK range.But, just because of the feature that its water consumption of above-mentioned several place is large, the king-sized situation of user's water consumption may be there is in it within a certain blink, so, original heat pump power to a certain place script reasonable selection and water tank tonnage but cannot meet the situation of its a large amount of water within a certain blink, heat pump has little time heating to a large amount of cold water newly entered, when after arrival to a certain degree, in storage tank, the temperature of water first occurs that fluctuation declines subsequently fast, and the leaving water temperature of final storage tank cannot meet the requirement of user to water temperature.If only blindly increase the apolegamy peak power of heat pump and the tonnage of storage tank in order to a large amount of regimen condition occurred in a certain blink, although above-mentioned this problem of the fluctuating temperature occurred can be solved, but this is obviously uneconomic, select more powerful heat pump and more large-tonnage storage tank the cost of equipment can be made significantly to increase, and under just conventional regimen condition, more powerful heat pump and more large-tonnage storage tank, without any advantage, also can increase cost during operation on the contrary.
Summary of the invention
In order to overcome the above-mentioned defect of prior art, embodiment of the present invention technical problem to be solved there is provided a kind of hot-water heating system and water heating method, and it can improve the stability of water storage device leaving water temperature.
The concrete technical scheme of the embodiment of the present invention is:
A kind of hot-water heating system, it comprises: the first hot water apparatus; Second hot water apparatus, the water side of described first hot water apparatus can be communicated with described second hot water apparatus; Water storage device, it can be communicated with described first hot water apparatus with described second hot water apparatus, and described water storage device also has the delivery port for supplying user's water and the water inlet for moisturizing.
Preferably, described water storage device comprises cascade water tank, and described cascade water tank comprises the water tank of N number of sequential communication, at least comprises first order water tank and the N level water tank of the first and last end laying respectively at N number of water tank in N number of water tank; Described delivery port is arranged at described first order water tank, and described first order water tank can be communicated with described second hot water apparatus; Described water inlet is arranged at described N level water tank, and described N level water tank can be communicated with the water intake end of described first hot water apparatus; Wherein N be greater than 1 positive integer.
Preferably, the water side that described N level water tank is communicated with the water intake end of described first hot water apparatus is positioned at the bottom of described N level water tank.
Preferably, the water tank in described cascade water tank is bearing type water tank.
Preferably, the first water side of described second hot water apparatus is communicated with the water intake end of described first order water tank, and described second hot water apparatus also has second water side that can be communicated with the water intake end of described first hot water apparatus.
Preferably, described second hot water apparatus is electric water heater, the water intake end of described second hot water apparatus is positioned at the bottom of described second hot water apparatus, first water side of described second hot water apparatus is positioned at the top of described second hot water apparatus, and the second water side of described second hot water apparatus is positioned at the middle part of described second hot water apparatus.
Preferably, the water intake end of contiguous described second hot water apparatus of the heating rod of described second hot water apparatus is arranged.
Preferably, described water storage device comprises storage tank, described delivery port and described water inlet are arranged at described storage tank, described storage tank also has the first opening and the second opening, first opening of described storage tank can be communicated with described second hot water apparatus, second opening of described storage tank can be communicated with the water intake end of described first hot water apparatus, and the first opening of described storage tank and the delivery port of described storage tank are all higher than the water inlet of described storage tank.
Preferably, the delivery port of described storage tank is positioned at the top of described storage tank, and the first opening of described storage tank closes on the top setting of described storage tank.
Preferably, described second hot water apparatus has first water side that can be communicated with the water intake end of described storage tank and second water side that can be communicated with the water intake end of described first hot water apparatus.
Preferably, described first hot water apparatus comprises heat pump, and described second hot water apparatus comprises displacement type water heater device.
A kind of water heating method, it comprises the following steps: the first hot water apparatus is received from the water of water storage device input; Second hot water apparatus is received from the water of the first hot water apparatus after heating; The water temperature of the water entered in the second hot water apparatus is judged, when the water temperature entering the water in described second hot water apparatus does not meet pre-conditioned a period of time, described second hot water apparatus is opened, and the water after described second hot water apparatus heating is delivered to described water storage device.
Preferably, when the water temperature entering the water in described second hot water apparatus meets pre-conditioned a period of time, described second hot water apparatus is not opened, and is delivered to water storage device by without the water after described second hot water apparatus heating.
Preferably, described method also comprises: when the water temperature of the water at the water side place of the water temperature and/or described first hot water apparatus that enter the water in described second hot water apparatus meets pre-conditioned two, be communicated with the water intake end of the second hot water apparatus and the first hot water apparatus.
Preferably, described method also comprises: when reaching predetermined condition three running time of described first hot water apparatus heating, judge whether the water temperature of the water entered in described second hot water apparatus meets pre-conditioned one,
Or
Judge whether the water temperature of the water at the water temperature of water and/or the water side place of described first hot water apparatus entered in described second hot water apparatus meets pre-conditioned two.
Preferably, the delivery port of described water storage device discharges the mixed water of water in the water of described second hot water apparatus and described water storage device.
Preferably, described method also comprises: obtain environment temperature, input the temperature of the water in the first hot water apparatus, based on the water in described environment temperature and described input first hot water apparatus temperature adjustmemt described in pre-conditioned one.
Preferably, in described water storage device, be provided with sensor, judge whether that opening described first hot water apparatus heats water based on described sensor.
Preferably, judge whether to disconnect the port of export of described water storage device and the arrival end of described water storage device based on described sensor, judge whether that described first hot water apparatus of unlatching and/or described second hot water apparatus heat the water in described hot-water heating system.
Technical scheme of the present invention has following remarkable beneficial effect:
1, the embodiment of the present invention comprises the second hot water apparatus, second hot water apparatus can comprise displacement type water heater, if the hot water flowed out through the first hot water apparatus heating meets the requirement of storage tank to water temperature, then the second hot water apparatus is not opened, and uses more energy-conservation the first more economical hot water apparatus heat pump to heat completely.Because the water temperature upper limit of heat pump is limited, if the hot water through the first hot water apparatus heat pump cannot meet the requirement of storage tank to water temperature, then open the hot water the second hot water apparatus being heated the first hot water apparatus heat pump outflow, second hot water apparatus one side is by temperature extremely higher for hot water heating, to meet the requirement of water storage device to water temperature, the hot water on the one hand the first hot water apparatus heat pump flowed out in addition first with meet the hot water that storage tank water temperature requires in the second hot water apparatus and mix, hot water in second hot water apparatus flows into water storage device again, as this reduced the fluctuating temperature of the current flowing into water storage device.
2, in the embodiment of the present invention, water storage device adopts cascade water tank, first order water tank sets out water end (W.E.), in the end one-level water tank is arranged the water intake end of cold water, and afterbody water tank is connected with first heater, when occur the short time significantly use water time, the cold water that water intake end newly enters first mixes mutually with hot water in afterbody water tank, although the temperature of the script hot water in afterbody water tank have dropped, but the cold water temperature flowed in first heater originally so can be made to be raised, when first heater is in peak power, water compared with large discharge can be heated to predetermined temperature to flow out, ensure that the stability of water side water temperature.
3, in the embodiment of the present invention, the second hot water apparatus has second water side that can be communicated with the water intake end of the first hot water apparatus, when there is frost in the first hot water apparatus heat pump, hot water in second hot water apparatus can be passed in the first hot water apparatus heat pump to defrost, water after defrosting enters the second hot water apparatus again, so defrosting when not affecting water supply, water temperature when defrosting can be ensured again.Secondly the water after once heating through the first hot water apparatus, the second hot water apparatus still cannot be heated to the temperature met the demands, can by water through the first hot water apparatus, the second hot water apparatus repeatedly circulating-heating until the temperature that meets the demands, and then flow to water storage device again.
Accompanying drawing explanation
Accompanying drawing described here only for task of explanation, and is not intended to limit scope disclosed by the invention by any way.In addition, the shape of each parts in figure and proportional sizes etc. are only schematic, for helping the understanding of the present invention, are not the shape and the proportional sizes that specifically limit each parts of the present invention.Those skilled in the art under the teachings of the present invention, can select various possible shape and proportional sizes to implement the present invention as the case may be.
Fig. 1 is the structural principle schematic diagram adopting cascade water tank in hot-water heating system embodiment of the present invention.
Fig. 2 is common heating process schematic in hot-water heating system embodiment of the present invention.
Fig. 3 is circulating-heating process schematic in hot-water heating system embodiment of the present invention.
Fig. 4 is the structural principle schematic diagram adopting storage tank in hot-water heating system embodiment of the present invention.
Fig. 5 is the structural principle schematic diagram of baffled storage tank in hot-water heating system embodiment of the present invention.
The Reference numeral of above accompanying drawing:
1, the first hot water apparatus; 2, the second hot water apparatus; 21, heating rod; 3, cascade water tank; 31, first order water tank; 32, N level water tank; 4, sensor; 5, storage tank; 51, baffle plate.
Detailed description of the invention
By reference to the accompanying drawings with the description of the specific embodiment of the invention, can clearly understand details of the present invention.But the specific embodiment of the present invention described here, only for explaining object of the present invention, and can not to be understood as by any way be limitation of the present invention.Under the teachings of the present invention, technical staff can conceive based on distortion possible arbitrarily of the present invention, and these all should be regarded as belonging to scope of the present invention.
A kind of hot-water heating system, it comprises: the first hot water apparatus 1; The water side of the second hot water apparatus 2, first hot water apparatus 1 can be communicated with the second hot water apparatus 2; Water storage device, it can be communicated with the first hot water apparatus 1 with the second hot water apparatus 2, and water storage device also has the delivery port for supplying user's water and the water inlet for moisturizing.
In one embodiment, when water storage device is cascade water tank 3, cascade water tank 3 comprises the water tank of N number of sequential communication, at least comprises first order water tank 31 and the N level water tank 32 of the first and last end laying respectively at N number of water tank in N number of water tank; First order water tank 31 has delivery port, and first order water tank 31 can be communicated with the second hot water apparatus 2; N level water tank 32 has the water inlet for moisturizing, and N level water tank 32 can be communicated with the water intake end of the first hot water apparatus 1; Wherein N be greater than 1 positive integer.
Fig. 1 is the structural principle schematic diagram adopting cascade water tank in hot-water heating system embodiment of the present invention, and as shown in Figure 1, this hot-water heating system comprises the first hot water apparatus 1, second hot water apparatus 2 and cascade water tank 3.First hot water apparatus 1 can comprise heat pump, and the second hot water apparatus 2 can comprise displacement type water heater.Certain, the first hot water apparatus 1 also can be other any hot water apparatus, such as, and electric heater, gas heater, solar water heater etc.Second hot water apparatus 2 also can comprise other hot water apparatus that can initiatively carry out heating.The water side of the first hot water apparatus 1 can be connected with the water intake end of the second hot water apparatus 2, thus make the second hot water apparatus 2 can be received from the water of the first hot water apparatus 1 output, certain, the water that second hot water apparatus 2 is received from the first hot water apparatus 1 output through the heating of the first hot water apparatus 1, can not have the heating through the first hot water apparatus 1 yet.When the first hot water apparatus 1 is directly-heated type heat pump, the water intake end place of the first hot water apparatus 1 can be provided with flow control valve, this flow control valve may be used for regulating by the water yield, thus for the different temperature entering coolant-temperature gage to ensure the water side of the first hot water apparatus 1 of the first hot water apparatus 1.
Cascade water tank 3 can comprise the water tank of N number of sequential communication, wherein N be greater than 1 positive integer.As shown in Figure 1, in the present embodiment, N is 3, and namely the water tank number of cascade water tank 3 is 3.Certain, in other embodiments, the quantity of cascade water tank 3 can be two, four or more.In the present embodiment, the top of N level water tank 32 is communicated with the bottom of N-1 level water tank.N level water tank 32 has the water side that can be communicated with the water intake end of the first hot water apparatus 1, and the water side of N level water tank 32 is positioned at the bottom of N level water tank 32.In cascade water tank 3, first order water tank 31 has delivery port, and this delivery port, for discharging the hot water stored in cascade water tank 3, uses for supplying user.In addition, in cascade water tank 3, first order water tank 31 is connected with the first water side of the water side of the second hot water apparatus 2.The N level water tank 32 of cascade water tank 3 is communicated with the water intake end of the first hot water apparatus 1, and the N level water tank 32 of cascade water tank 3 also has water inlet, and generally it is connected with water service pipeline, for carrying out moisturizing to cascade water tank 3.So, when user uses hot water, in cascade water tank 3, the water of first order water tank 31 mixes for user with the water that the second hot water apparatus 2 exports.Water tank in cascade water tank 3 can be bearing type water tank, when cascade water tank 3 during bearing type water tank, when the instantaneous water consumption of user is larger, first hot water apparatus 1 and the second hot water apparatus 3 pairs of waters heat, and the flow of its water is when cannot balance each other with user's water consumption, because the N level water tank 32 in cascade water tank 3 has water inlet, water inlet directly can carry out moisturizing to cascade water tank, to meet any flow of the water of cascade water tank 3 delivery port.
The water intake end of the second hot water apparatus 2 can be positioned at the bottom of described second hot water apparatus 2, and the first water side of the second hot water apparatus 2 can be positioned at the top of described second hot water apparatus 2.Second hot water apparatus 2 can heat by using heater block such as heating rod 21 grade, and wherein the water intake end of contiguous second hot water apparatus 2 such as heater block such as heating rod 21 grade is arranged.So, current that can be below standard to the water temperature entering the second hot water apparatus 2 heat, avoid the hot water stored in the second hot water apparatus 2 to occur larger fluctuation because of the water inlet of water intake end, have influence on the stability of the leaving water temperature of the first water side being positioned at the second hot water apparatus 2 top.Hot-water heating system of the present invention has following several duty:
When first job state, disconnect the water side of first order water tank 31 and the water intake end of N level water tank 32, thus make cascade water tank 3, first hot water apparatus 1 and the second hot water apparatus 2 form inner loop.Water in cascade water tank 3 can enter the water intake end of the first hot water apparatus 1 from the water side of 32 of N level water tank, then the water intake end of the second hot water apparatus 2 is entered from the water side of the first hot water apparatus 1, then enter first order water tank from the water side of the second hot water apparatus 2, the water entered in first order water tank 31 can to second level water tank, third level water tank until N level water tank 32 flows.When removing the water in first order water tank and being in full state, the water entered in first order water tank can be stayed in first order water tank.In this process, the first hot water apparatus and/or the second hot water apparatus can heat the water flowed through, thus improve the temperature of the water in hot-water heating system.In one preferred embodiment, the degree that the first hot water apparatus and/or the second hot water apparatus can be heated by both calculated equilibrium makes the water in hot-water heating system reach desired temperature through once circulating.
When the second duty, open the delivery port of first order water tank 31 and the water inlet of N level water tank 32, thus make water can enter in N level water tank from the water inlet of N level water tank 32, the delivery port of first order water tank 31 also can be made to communicate with the external world.Certain, the delivery port of first order water tank 31 can be communicated with domestic consumer, factory etc., thus provides the water of applicable temperature to domestic consumer, factory etc.
In this condition, water accepted by N level water tank 32.The water of a part for N level water tank 32 enters in the first hot water apparatus 1, and then the water of this part enters the water intake end of the second hot water apparatus 2 from the water side of the first hot water apparatus 1, then enters in first order water tank 31 from the water side of the second hot water apparatus 2.In the process, the first hot water apparatus 1 and/or the second hot water apparatus 2 can heat the water of this part.The water of this part (through heating or without heating) discharges entering the mixing of the water in first order water tank 31.Meanwhile, the water in the water tank of the second level fills in first order water tank by pipeline, and the water in third level water tank fills into second level water tank, the like, the water of another part of N level water tank fills in N-1 level water tank.
Certain, in another state, water accepted by N level water tank 32, and now, the water in N level water tank 32 is not delivered to the first hot water apparatus 1 and the second hot water apparatus 2 heats, and the first hot water apparatus 1 and the second hot water apparatus 2 can be in closed condition.Water in N level water tank 32 is carried in N-1 level water tank directly in cascade water tank 3, so, when the delivery port of first order water tank 31 to communicate with the external world supply water time, the water intake end of N level water tank accepts water, directly carries out moisturizing by other water tanks in cascade water tank 3 to first order water tank 31.
Fig. 2 is common heating process schematic in hot-water heating system embodiment of the present invention, as shown in Figure 2, when user uses hot water, the hot water that in cascade water tank 3, in first order water tank 31, top stores preferentially supplies user and uses, now, in cascade water tank 3, the water inlet of N level water tank 32 is connected with water service pipeline, thus supplementary cold water is carried out to cascade water tank 3, cold water flows into N level water tank 32 in cascade water tank 3, mix mutually with the script hot water be in N level water tank 32, water temperature is necessarily raised.Because the water intake end of the first hot water apparatus 1 is connected with the N level water tank 32 of cascade water tank 3, mixed water flows into the first hot water apparatus 1 and heats, heat after heat water through the first hot water apparatus 1 and flow into the second hot water apparatus 2, if now the temperature of hot water meets the temperature flowing into cascade water tank 3 and require, then do not open the second hot water apparatus 2.Hot water flows into the first order water tank 31 in cascade water tank 3 through the second hot water apparatus 2, because water temperature meets the demands and what directly pass into is first order water tank 31, can directly be used.If the temperature of hot water does not meet the temperature flowing into cascade water tank 3 and require, then open the second hot water apparatus 2, make hot water temperature meet the temperature flowing into the requirement of cascade water tank 3 through the second hot water apparatus 2 heating, final hot water flows into the first order water tank 31 in cascade water tank 3, and supply user uses.
When user just brings into use hot water, full hot water is first stored in cascade water tank 3, in cascade water tank 3, the hot water supply user of first order water tank 31 uses, and in cascade water tank 3, the water inlet of N level water tank 32 and water service pipeline connection, carry out supplementary cold water to cascade water tank 3 thus.Owing to being connected successively between each water tank in cascade water tank 3, the glassware for drinking water between each water tank has good isolation effect, and the impact property of water temperature is very little each other.When after the first hot water apparatus 1 and the heating of the second hot water apparatus 2, the water yield be supplemented in first order water tank 31 cannot meet the water yield that first order water tank 31 exports to user, the water that water in N level water tank 32 promotes in N-1 level water tank flows in N-2 level water tank, so, the stored hot water of every one-level water tank can be carried successively in previous stage water tank, supply water to user to meet first order water tank 31, and the water temperature that can reduce the water in first order water tank 31 is by supplementing into the cold water mitigation in N level water tank 32, make the hot water that first order water tank 31 preferentially stores in user's output cascade water tank 3, reduce the fluctuation of the water temperature that first order water tank 31 supplies water to user.
Cascade water tank 3 is adopted in the embodiment of the present invention, first order water tank 31 sets out the mouth of a river, in the end one-level water tank (N level water tank) is arranged the water inlet of cold water, and afterbody water tank is connected with first heater 1, when occur the short time significantly use water time, the cold water that water inlet newly enters first mixes mutually with hot water in afterbody water tank, although the temperature of the script hot water in afterbody water tank have dropped, but the cold water temperature flowed in first heater originally so can be made to be raised, when first heater is in peak power, water compared with large discharge can be heated to predetermined temperature to flow out, ensure that the stability of delivery port water temperature.
In existing technology, because the efficiency of heating surface of first heater is limited, also cannot by the cool water heating of inflow to predetermined temperature even if first heater is in peak power, in the present embodiment, hot-water heating system is provided with the generation that secondary heating mechanism can avoid this kind of problem.Simultaneously, even if when adopting heaterless first heater, first heater can only by the low discharge cool water heating of input to predetermined temperature under being in peak power, although heaterless first heater meets the temperature requirement of heating, but the discharge of heating is too small cannot balance each other with the large discharge of water, the temperature of water side there will be fluctuation, in the present embodiment, the water storage device place of hot-water heating system arranges the water intake end of cold water, intake from cascade water tank to first heater supply again, so, improve the water temperature of first heater water inlet, the heating water flow of heaterless first heater can be made larger, secondly, the hot water stored in water storage device supplies user from water side after mixing with the water outlet of secondary heating mechanism again, there is the possibility of fluctuation in the temperature eventually reducing delivery port.
Because the energy efficiency coefficient of heat pump reduces along with water intake end water temperature and environment temperature decline.In above process, if when the requirement that the water that the first hot water apparatus 1 (as heat pump) heating is flowed out not only can meet water temperature also has higher energy efficiency coefficient, then can not open the second hot water apparatus 2, namely only use the first hot water apparatus 1 to heat.The water flowed out when the first hot water apparatus 1 (as heat pump) heating can meet water temperature requirement, but due to its water intake end water temperature and environment temperature low especially, when causing the energy efficiency coefficient of the first hot water apparatus 1 low especially, then can open the second hot water apparatus 2, namely adopt the first hot water apparatus 1 and the second hot water apparatus 2 to heat simultaneously.Being heated by the second hot water apparatus 2 pairs of cold water, to reduce the degree of heat of the first hot water apparatus 1 pair of cold water, thus when reaching cool water heating target, improving the economy that water is heated.In another case, when the first hot water apparatus 1 heat the water flowed out can not meet the demands time, also can open the first hot water apparatus 1 and the second hot water apparatus 2 heats.
In one preferred embodiment, Fig. 3 is circulating-heating process schematic in hot-water heating system embodiment of the present invention, and as shown in Figure 3, the second hot water apparatus 2 also has second water side that can be communicated with the water intake end of described first hot water apparatus 1.Second water side of the second hot water apparatus 2 can be positioned at the middle part of described second hot water apparatus 2.First hot water apparatus 1 and N level water tank disconnect, when first water side of the second hot water apparatus 2 and first order water tank 31 disconnect, the water entered in the second hot water apparatus 2 can enter the water intake end of the first hot water apparatus 1 from the second water side of the second hot water apparatus 2, and enter in the second hot water apparatus 2 from the water side of the first hot water apparatus 1, thus form circulation.
When there is frost in the first hot water apparatus 1 (as heat pump), the first hot water apparatus 1 and the second hot water apparatus 2 can be made to form above-mentioned circulation, and open the second hot water apparatus 2, thus the water after being heated by the second hot water apparatus 2 passes into defrost in the first hot water apparatus 1 heat pump, the water after defrosting enters the second hot water apparatus 2 again.
When the hot water after the second hot water apparatus 2 heats still backlog demand, the first hot water apparatus 1 and the second hot water apparatus 2 can be made to form above-mentioned circulation, and open the second hot water apparatus 2, now also can open the first hot water apparatus 1, thus water after heating in the second hot water apparatus 2 is returned to again to heat in the first hot water apparatus 1, then flow back in the first hot water apparatus 1.Circulation like this, until the water temperature of the water side of the second hot water apparatus 2 meets the demands.If meet the demands, then disconnected by the water intake end of the second water side of the second hot water apparatus 2 and the first hot water apparatus 1, the water intake end of the first hot water apparatus 1 is communicated with between cascade water tank 3 again.So, can when the second hot water apparatus 2 and the first hot water apparatus 1 degree of heat inadequate avoid the water temperature of the water outlet of the second hot water apparatus 2 to cascade water tank 3 delivery port to cause influence of fluctuations.Owing to adopting the structure of cascade water tank 3, in cascade water tank 3, the water inlet of N level water tank 32 can not affect the temperature fluctuation of first order water tank 31 delivery port at short notice.The circulating-heating that operation like this fully can also employ the second hot water apparatus 2 and the first hot water apparatus 1 simultaneously within the shortest time meets the demands to make the leaving water temperature of the second hot water apparatus 2.
In another embodiment, Fig. 4 is the structural principle schematic diagram adopting storage tank in hot-water heating system embodiment of the present invention, as shown in Figure 4, when water storage device is storage tank 5, a kind of hot-water heating system it can comprise: the first hot water apparatus 1; The water side of the second hot water apparatus 2, first hot water apparatus 1 can be communicated with the second hot water apparatus 2; Have the storage tank 5 of delivery port and water inlet, storage tank 5 also has the first opening and the second opening; First opening of storage tank 5 can be communicated with the second hot water apparatus 2; Second opening of storage tank 5 can be communicated with the water intake end of the first hot water apparatus 1; First opening of storage tank 5 and the delivery port of storage tank 5 are all higher than the water inlet of storage tank 5.
The delivery port of storage tank 5 can be positioned at the top of storage tank 5.The delivery port of storage tank 5 is for supplying user's water.First opening of storage tank 5 can close on the top setting of storage tank 5.Certain, the first hot water apparatus 1 can comprise heat pump, and the second hot water apparatus 2 can comprise displacement type water heater.Second hot water apparatus 2 has first water side that can be communicated with the water intake end of storage tank 5 and second water side that can be communicated with the water intake end of the first hot water apparatus 1.The heating rod 21 of the second hot water apparatus 2 can be close to the water intake end setting of the second hot water apparatus 2.
When water inlet all higher than described storage tank 5 of the first opening of storage tank 5 and the delivery port of storage tank 5, the delivery port supply user water of storage tank 5, the hot water of storage tank 5 inner upper is preferentially used, after re-using, the water inlet of storage tank 5 supplements from below and enters cold water, supplement the bottom that the cold water entered is in storage tank 5, the fluctuating temperature of water side, storage tank 5 top can be effectively reduced.And the hot water after the second hot water apparatus 2 heats directly is supplemented near the water side of storage tank 5, so, the hot water supply user after the second hot water apparatus 2 can preferentially heat by the delivery port of storage tank 5, the farthest stability of guarantee water temperature.
In another embodiment, Fig. 5 is the structural principle schematic diagram of baffled storage tank in hot-water heating system embodiment of the present invention, as shown in Figure 5, the inside of storage tank 5 is provided with the baffle plate 51 of more than at least one piece, so, form runner in the inner space of storage tank 5 by baffle plate 51, the structure of this runner and can arrange relation and change by the different shape of baffle plate 51.In the present embodiment, the first opening of storage tank 5 is connected by runner with the second opening of storage tank 5.The water inlet of the second opening and storage tank 5 is arranged on the close positions of storage tank 5, and the delivery port of the first opening and storage tank 5 is located at the close positions of storage tank 5.The cold water that the water inlet of storage tank 5 like this supplements needs the runner through storage tank 5 inside could arrive the water outlet of the first opening and storage tank 5, like this, just supplemented into cold water not easily mix with the whole hot water stored in storage tank 5, only can have influence on the hot water of the water inlet of storage tank 5, along with the continuous moisturizing of the water inlet of storage tank 5, cold water just can slowly by the runner that arranges step by step with the delivery port of the hot water phase mixed flow in storage tank 5 to the first opening and storage tank 5.Certain, baffle plate 51 in present embodiment is made up of heat-barrier material, heat exchange amount in the runner that effectively can reduce baffle plate 51 two sides like this between water, the cold water that the water inlet reducing storage tank 5 supplements affect the degree of baffle plate 51 hot water simultaneously in addition by the heat exchange of baffle plate 51.Effectively the spatial placement in storage tank 5 can be become multiple region by arranging of baffle plate 51, reduce the interactional degree of water temperature between regional, thus ensure that the water of the water outlet of the first opening and storage tank 5 is finally affected, so can make that the first opening is relative with the water temperature of the water of the water outlet of storage tank 5 remains on a higher temperature, and reduce its degree occurring fluctuation and possibility.
A water heating method for hot-water heating system, comprises the following steps:
First hot water apparatus 1 is received from the water of water storage device input.Sensor 4 can be provided with in water storage device and the second hot water apparatus 2, and then unlatching first hot water apparatus 1 can be judged whether based on sensor 4.
Second hot water apparatus 2 is received from the water of the first hot water apparatus 1 after heating.
Judge the water temperature of the water entered in the second hot water apparatus 2, when the water temperature entering the water in the second hot water apparatus 2 does not meet pre-conditioned a period of time, the second hot water apparatus 2 is opened, and the water after the second hot water apparatus 2 heats is delivered to water storage device.
When the water intake end of water storage device and the delivery port of water storage device are in communication with the outside respectively, the delivery port of water storage device discharges the mixed water of water in the water of the second hot water apparatus 2 and water storage device.
Obtain environment temperature, input the temperature of the water in the first hot water apparatus, the temperature based on the water in environment temperature and input the first hot water apparatus can revise described pre-conditioned one.Specifically: pre-conditioned one can be the definite value of setting, also can be calculated by the water temperature in the water temperature of the water in input first hot water apparatus, water storage device and user's set water temperature and be obtained.When user's set water temperature is higher, and when water temperature in water storage device is lower, pre-conditioned one can revise numerical value step-down voluntarily.When user's set water temperature is lower, and water temperature in water storage device is higher, pre-conditionedly can revise numerical value voluntarily first and uprises.
Pre-conditioned one can also be relevant to the energy efficiency coefficient of the temperature of the water in input first hot water apparatus 1, the first hot water apparatus 1.Generally speaking, pre-conditioned one when being a Temperature numerical, and this Temperature numerical can regulate according to the temperature of the water inlet of the first hot water apparatus 1 and environment temperature.In order to obtain the energy efficiency coefficient of the first higher hot water apparatus 1, the Temperature numerical of pre-conditioned can also change along with the change such as water temperature, environment temperature of the temperature of input first hot water apparatus 1 water, user's set water temperature, water storage device.Such as, the inflow temperature calculating based on user's set water temperature and the first hot water apparatus is learnt, needs the temperature of the water in input first hot water apparatus 1 to improve 45 DEG C.But the energy efficiency coefficient that the first hot water apparatus gives when water raises the heat of 30 degrees Celsius is higher, based on this, pre-conditioned one reduces, thus opens the second hot water apparatus 2.
Such as, when the water temperature in the water temperature and water storage device of the water in input first hot water apparatus 1 is higher, when corresponding user's design temperature is lower, pre-conditioned higher first, the second hot water apparatus need not be opened.When the water temperature in the water temperature and water storage device of the water in input first hot water apparatus 1 is higher, when corresponding user's design temperature is lower, pre-conditioned lower first, the second hot water apparatus 2 can be opened.
First hot water apparatus 1 can adjust according to the relation between the water temperature be delivered in the first hot water apparatus 1 and environment temperature the degree of heat of the water be delivered to from water storage device in the first hot water apparatus 1.
Such as, this hot-water heating system is used in hotel or hotels and other places, because user can not change usually to the temperature of water demand, so the temperature of water storage device delivery port can be a definite value, the temperature of the water that is after the first hot water apparatus 1 and/or the heating of the second hot water apparatus 2 reaches this definite value.When the first hot water apparatus 1 and the second hot water apparatus 2 heat simultaneously meet user's water when, water inlet is first heated to T1 by the first hot water apparatus 1, and T1 is less than pre-conditioned one, the second hot water apparatus 2 again by water from T1 heating temperatures to user the temperature to water demand.Water inlet is first heated in the process of T1 by the first hot water apparatus 1, heats the temperature reached under the actual temp of T1 to be exactly the first hot water apparatus 1 keep under based on environment temperature and inflow temperature its most high workload efficiency to the water entered in it.When environment temperature declines or raise, the energy efficiency coefficient of the first hot water apparatus 1 can change along with the change of inflow temperature and environment temperature, now, in order to ensure that the first hot water apparatus 1 carries out work with its most high workload efficiency, need can obtain the highest energy efficiency coefficient according to inflow temperature and environment temperature, and maintain under the first hot water apparatus 1 is in most high energy efficiency coefficient and run, namely remain that the first hot water apparatus 1 runs under being in its most high workload efficiency that can reach.
When the water temperature entering the water in the second hot water apparatus 2 meets pre-conditioned a period of time, the second hot water apparatus 2 is not opened, and the water after heating without the second hot water apparatus 2 is delivered to water storage device.
When the water temperature of the water at the water side place of the water temperature and/or described first hot water apparatus 1 that enter the water in the second hot water apparatus 2 meets pre-conditioned two, be communicated with the water intake end of the second hot water apparatus 2 and the first hot water apparatus 1.As previously mentioned, when the hot water after frosting appears in the first hot water apparatus 1 or the second hot water apparatus 2 heats still backlog demand, the first hot water apparatus 1 and the second hot water apparatus 2 can be made to form circulation, and open the second hot water apparatus 2, now also can open the first hot water apparatus 1, thus water after heating in the second hot water apparatus 2 is returned to again to heat in the first hot water apparatus 1, then flow back in the first hot water apparatus 1.Pre-conditioned two can be setting value, also can be calculated by one or more in water temperature in environment temperature, the water intake end of the first hot water apparatus 1 and the water temperature difference of water side and the second hot water apparatus 2 etc.
When reaching predetermined condition three running time that the first hot water apparatus 1 heats, carry out judging the water temperature of the water entered in the second hot water apparatus 2 whether meet pre-conditioned one or the water temperature of the water that enters the water temperature of the water in the second hot water apparatus 2 and/or the water side place of the first hot water apparatus 1 whether meet pre-conditioned two.This predetermined condition three can be the scheduled time, such as, can be 2 minutes.After reaching 2 minutes the running time that the first hot water apparatus 1 heats, whether the water temperature of the water temperature whether pre-conditioned of just carrying out judging the water entered in the second hot water apparatus 2 or the water that enters the water temperature of the water in the second hot water apparatus 2 and/or the water side place of the first hot water apparatus 1 meets pre-conditioned two.So, can guarantee to carry out water temperature judgement after the first hot water apparatus 1 is stable, be conducive to the accuracy that water temperature judges, avoid making useless judgement when the first hot water apparatus 1 has just started water temperature instability, and then make system make nonsensical nuisance operation.。
In one embodiment, can judge whether to disconnect the port of export of water storage device and the arrival end of water storage device based on sensor 4, judge whether that unlatching first hot water apparatus 1 and/or the second hot water apparatus 2 heat the water in described hot-water heating system.When the temperature that sensor 4 judges in water storage device is too low, the water temperature in hot-water heating system can be heated, form circulation by water storage device, the first hot water apparatus 1 and the second hot water apparatus 2, thus improve the temperature of the water in water storage device.This step can operate before hot-water heating system outwards exports hot water, also can carry out after hot-water heating system outwards exports hot water a period of time.
Water heating method in present embodiment can disconnect the port of export of water storage device and the arrival end of water storage device according to actual conditions effective opening and closing first hot water apparatus 1 and/or the second hot water apparatus 2 and opening thus water water storage device being inputted to the first hot water apparatus 1 heats, the water side heat face of the delivery port of water storage device is finally made to meet the requirement of user to water temperature stability, meet user under the requirement of water temperature stability on the one hand in addition, use the water of the first hot water apparatus 1 of more economic environmental protection to input to heat as far as possible.
Each embodiment in this description all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (19)
1. a hot-water heating system, is characterized in that, it comprises:
First hot water apparatus;
Second hot water apparatus, the water side of described first hot water apparatus can be communicated with described second hot water apparatus;
Water storage device, it can be communicated with described first hot water apparatus with described second hot water apparatus, and described water storage device also has the delivery port for supplying user's water and the water inlet for moisturizing.
2. hot-water heating system according to claim 1, it is characterized in that, described water storage device comprises cascade water tank, and described cascade water tank comprises the water tank of N number of sequential communication, at least comprises first order water tank and the N level water tank of the first and last end laying respectively at N number of water tank in N number of water tank; Described delivery port is arranged at described first order water tank, and described first order water tank can be communicated with described second hot water apparatus; Described water inlet is arranged at described N level water tank, and described N level water tank can be communicated with the water intake end of described first hot water apparatus; Wherein N be greater than 1 positive integer.
3. hot-water heating system according to claim 2, is characterized in that, the water side that described N level water tank is communicated with the water intake end of described first hot water apparatus is positioned at the bottom of described N level water tank.
4. hot-water heating system according to claim 2, is characterized in that, the water tank in described cascade water tank is bearing type water tank.
5. hot-water heating system according to claim 2, it is characterized in that, first water side of described second hot water apparatus is communicated with the water intake end of described first order water tank, and described second hot water apparatus also has second water side that can be communicated with the water intake end of described first hot water apparatus.
6. hot-water heating system according to claim 5, it is characterized in that, described second hot water apparatus is electric water heater, the water intake end of described second hot water apparatus is positioned at the bottom of described second hot water apparatus, first water side of described second hot water apparatus is positioned at the top of described second hot water apparatus, and the second water side of described second hot water apparatus is positioned at the middle part of described second hot water apparatus.
7. hot-water heating system according to claim 6, is characterized in that, the water intake end of contiguous described second hot water apparatus of heating rod of described second hot water apparatus is arranged.
8. hot-water heating system according to claim 1, it is characterized in that, described water storage device comprises storage tank, described delivery port and described water inlet are arranged at described storage tank, described storage tank also has the first opening and the second opening, first opening of described storage tank can be communicated with described second hot water apparatus, second opening of described storage tank can be communicated with the water intake end of described first hot water apparatus, and the first opening of described storage tank and the delivery port of described storage tank are all higher than the water inlet of described storage tank.
9. hot-water heating system according to claim 8, is characterized in that, the delivery port of described storage tank is positioned at the top of described storage tank, and the first opening of described storage tank closes on the top setting of described storage tank.
10. hot-water heating system according to claim 8, is characterized in that, described second hot water apparatus has first water side that can be communicated with the water intake end of described storage tank and second water side that can be communicated with the water intake end of described first hot water apparatus.
11. hot-water heating systems according to claim 1, is characterized in that, described first hot water apparatus comprises heat pump, and described second hot water apparatus comprises displacement type water heater device.
12. 1 kinds of water heating methods, it is characterized in that, it comprises the following steps:
First hot water apparatus is received from the water of water storage device input;
Second hot water apparatus is received from the water of described first hot water apparatus after heating;
The water temperature of the water entered in described second hot water apparatus is judged, when the water temperature entering the water in described second hot water apparatus does not meet pre-conditioned a period of time, described second hot water apparatus is opened, and the water after described second hot water apparatus heating is delivered to described water storage device.
13. water heating methods according to claim 12, it is characterized in that, when the water temperature entering the water in described second hot water apparatus meets pre-conditioned a period of time, described second hot water apparatus is not opened, and is delivered to described water storage device by without the water after described second hot water apparatus heating.
14. water heating methods according to claim 12, it is characterized in that, described method also comprises: when the water temperature of the water at the water side place of the water temperature and/or described first hot water apparatus that enter the water in described second hot water apparatus meets pre-conditioned two, be communicated with the water intake end of described second hot water apparatus and described first hot water apparatus.
15. water heating methods according to claim 14, it is characterized in that, described method also comprises: when reaching predetermined condition three running time of described first hot water apparatus heating, judge whether the water temperature of the water entered in described second hot water apparatus meets pre-conditioned one
Or
Judge whether the water temperature of the water at the water temperature of water and/or the water side place of described first hot water apparatus entered in described second hot water apparatus meets pre-conditioned two.
16. water heating methods according to claim 12, is characterized in that, the delivery port of described water storage device discharges the mixed water of water in the water of described second hot water apparatus and described water storage device.
17. water heating methods according to claim 12, it is characterized in that, described method also comprises: obtain environment temperature, input the temperature of the water in the first hot water apparatus, based on the water in described environment temperature and described input first hot water apparatus temperature adjustmemt described in pre-conditioned one.
18. water heating methods according to claim 12, is characterized in that, are provided with sensor in described water storage device, judge whether that opening described first hot water apparatus heats water based on described sensor.
19. water heating methods according to claim 18, it is characterized in that, judge whether to disconnect the port of export of described water storage device and the arrival end of described water storage device based on described sensor, judge whether that described first hot water apparatus of unlatching and/or described second hot water apparatus heat the water in described hot-water heating system.
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