CN101782249A - Hot-water pipeline with cold-water emptying loop and control method thereof - Google Patents

Hot-water pipeline with cold-water emptying loop and control method thereof Download PDF

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CN101782249A
CN101782249A CN200910045549A CN200910045549A CN101782249A CN 101782249 A CN101782249 A CN 101782249A CN 200910045549 A CN200910045549 A CN 200910045549A CN 200910045549 A CN200910045549 A CN 200910045549A CN 101782249 A CN101782249 A CN 101782249A
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water
hot water
line
hot
cold
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潘戈
王伏仁
朱奎
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Abstract

The invention provides a hot-water pipeline with a cold-water emptying loop. An inlet of the cold-water emptying loop(34) is arranged on the hot-water pipeline(2), and an outlet of the cold-water emptying loop is arranged in a hot-water supply source(1); the inlet of the cold-water emptying loop is also arranged on the hot-water pipeline close to the hot-water supply source; and the cold-water emptying loop(34) is provided with a water pump(23). By the hot-water pipeline of the invention, the hot water can still directly flow out when a water nozzle(24) not used for a long time is opened; the original hot-water pipeline is used as the cold-water emptying loop, rather than a pipeline is paved from a terminal water utilization point, so that the length of the cold-water emptying loop is greatly shortened, and the project cost is saved; in addition, the cold-water emptying loops are just uniformly arranged on the hot-water supply source and the cold-water emptying loop from each terminal water utilization point is unnecessarily paved, so that the modification of the hot-water pipeline is quite easy, and the assembly of the hot-water pipeline is more convenient.

Description

Hot water line and control method thereof with cold water emptying loop
Technical field
The present invention relates to a kind of hot water line with cold water emptying loop, what directly flow out when making water chew to open is hot water, rather than emits earlier and go out hot water in the pipeline behind the cold water again.In addition, the invention still further relates to above-mentioned control method with the hot water line in cold water emptying loop.
Background technology
Present hot water line a kind of phenomenon occurs through regular meeting in the winter time, and when promptly opening water and chewing, what flow out earlier is not hot water, but cold water.This is to use owing to the hot water long period among the hot water line is static, and cooling causes gradually.
This phenomenon, more obvious for away from the heat supply water source with water spot, as hotel, building even the sub-district of unified heat supply water, the user is using hot water to go to toward emitting a large amount of cold water.
The way of first emptying cold water not only directly causes a large amount of water-white whitecap expenses before this use hot water, has also prolonged the time of using hot water indirectly.What is more, and impatient user has washed into cold shower when washing hot bath the winter of severe cold, has caused the infringement of health.
(denomination of invention: Chinese patent literature a kind of hot water line's return water system installation method) discloses a kind of solution to the problems described above to application number CN200510084012.8: point out at hot water line's least significant end water and install a cover EGR additional, as circulating pump, lay a water return pipeline simultaneously in water heater, realizing that the water that turns cold in the hot water line is got back in the water heater reheats, thereby reaches the purpose of coming out a hot water of turning on the tap.
Yet, lay a water return pipeline to heat supply water source (comprising water heater) at hot water line's least significant end with the water spot place, promptly forming least significant end is connected with dual circuit between the heat supply water source with water spot, for being to be difficult to operation with water spot away from the heat supply water source, hotel, building even sub-district as unified heat supply water, can not all lay a very long water return pipeline to the heat supply water source with water spot at each, otherwise, it is just almost the same with new shop hot water line to lay cold water emptying loop pipeline, gigantic project, cost are too high.In addition, for same heat supply water source, its terminal also is different with the geographical situation of water spot, installs also different situations can occur, and is very inconvenient.
Summary of the invention
The object of the present invention is to provide a kind of low cost that addresses the above problem, easy-operating technical scheme, what directly flow out when making untapped water of long period chew to open is still hot water, rather than emits earlier and go out hot water in the pipeline behind the cold water again.
For this reason, the invention provides a kind of hot water line with cold water emptying loop, comprise controller, heat supply water source, hot water line, cold water emptying loop, Shui Zui, cold water emptying loop inlet is connected with the hot water line, and the outlet of cold water emptying loop is connected with the heat supply water source.Above-mentioned cold water emptying loop inlet also is positioned near on the hot water line at heat supply water source, water chew with the heat supply water source between be connected for the single tube road; Also be provided with water pump on the cold water emptying loop.The water that cools off among the above-mentioned hot water line is through the water pump effect, reverse flow in the hot water line, and be back to the heat supply water source through the cold water emptying loop.
Hot water line with cold water emptying loop of the present invention, the cold water emptying loop that has water pump is installed near place, heat supply water source, is power with the water pump, and the water that cools off among the hot water line is forced oppositely circulation, be pumped into the cold water emptying loop, be recycled to then in the heat supply water source.Hot water in the heat supply water source flows into rapidly and has soared fully or the part hot water line of cold water that soars, thereby what make water chew directly to emit is hot water, rather than cold water.
Hot water line with cold water emptying loop of the present invention, the inlet in cold water emptying loop is installed near place, heat supply water source, comprise the outside, heat supply water source or inboard, pump by water pump is inhaled, the water that cools off among the hot water line is oppositely circulated, thereby use the next water return pipeline of original hot water line as the overwhelming majority among the CN200510084012.8, rather than lay pipeline in addition with water spot from terminal, be among the hot water line with cold water emptying loop of the present invention, water chew with the heat supply water source between still be connected for the single tube road, therefore shorten the length in cold water emptying loop greatly, saved engineering cost greatly.
In addition, hot water line with cold water emptying loop of the present invention, hotel, building even sub-district for unified heat supply water, only need unify the cold water emptying loop is installed in place, heat supply water source, and need not from each terminal to lay the cold water emptying loop with water spot, make that hot water line's transformation is very simple, its installation is also convenient.
Hot water line with cold water emptying loop of the present invention inhales by the powerful pump of water pump, the water that cools off among the hot water line with chew the air that enters from water and all introduce the cold water emptying loop by force, thereby makes water chew when opening seldom even does not have cold water to discharge.Theoretically, if enough accurate to the control of above-mentioned pipeline, a cold water can not discharged.
For with more, the terminal of water spot with water spot hot water line far away, how the booster water pumps of band water flow switch are installed in the hot water line, guarantee that each is enough with the hydraulic pressure of water spot, water flow is normal.
Therefore, the hot water line with cold water emptying loop of the present invention, the water pump in its cold water emptying loop also can be the booster water pump that utilizes the band water flow switch among the former hot water line.Like this, the hot-water line highway section with water pump is divided into two parts to described cold water emptying loop:
Cold water emptying loop entrance, its inlet is above-mentioned cold water emptying loop inlet, its outlet is positioned on the hot water line of pump intake of water pump;
Cold water emptying loop outlet section, its outlet is above-mentioned cold water emptying loop outlet, its inlet is positioned on the hot water line of pump discharge of above-mentioned water pump;
Above-mentioned cold water emptying loop entrance, the hot-water line highway section with water pump and cold water emptying loop outlet section, three sections pipeline head and the tail connections successively form the cold water emptying loop.
Flow of hot water in the relatively hot water lines to, the water that cools off among the hot water line oppositely flows into cold water emptying loop entrance, concurrent is through having the hot-water line highway section of water pump then, and reverse flow is back to the heat supply water source at last through cold water emptying loop outlet section again.
Hot water line with cold water emptying loop of the present invention can the control of employing time, control method such as temperature control.
Open the water of hot water line's terminal and chew, during less than setting-up time T1, be in conducting state between cold water emptying loop and hot water line; The water that cools off among the hot water line is through the water pump effect, reverse flow in the hot water line, and be back to the heat supply water source through the cold water emptying loop;
Open the water of hot water line's terminal and chew, during greater than setting-up time T1, be in conducting state between heat supply water source and hot water line; The hot water that the heat supply water source flows out, the hot water line that flows through chews discharge at water at last.
Above-mentioned setting-up time T1 can along with water chew and the heat supply water source between distance lengthening and increase the shortening of distance and less; Above-mentioned setting-up time T1 increases along with the reduction of environment temperature, the rising of environment temperature and reducing.Generally speaking, winter above-mentioned setting-up time T1 can select 3-10 second.The model of water pump is selected also will take into account the length of above-mentioned setting-up time T1 except that the situations such as quantity according to water point in the water return pipeline.
Yet the resident uses the time of hot water how can focus on a period of time.Like this, when the hot water among the hot water line did not also cool off, the someone used again, and need not the water emptying among the former hot water line.Frequent startup water pump, the forced circulation current also are a kind of energy and waste of time.
Therefore, hot water line with cold water emptying loop of the present invention, the precondition of cold water emptying loop start can be set in controller, that is: the water of opening hot water line's terminal is chewed, less than setting-up time T1, and and blanking time of opening last time during greater than setting-up time T2, just be in conducting state between cold water emptying loop and hot water line; The water that cools off among the hot water line is just through the water pump effect, reverse flow in the hot water line, and be back to the heat supply water source through the cold water emptying loop.Otherwise, open blanking time that water chews for twice during less than setting-up time T2, still be in cut-off state between cold water emptying loop and hot water line, the water on the hot water line need not to reflux through the cold water emptying loop, still directly chews discharge by water.
Above-mentioned setting-up time T2 increases along with the reduction of environment temperature, the rising of environment temperature and reducing.Generally speaking, winter above-mentioned setting-up time T2 can select 10-30 minute.
With the comparable data that above-mentioned setting-up time T1, setting-up time T2 compare, can be by controller gather booster pump with the signal of water flow switch realize.
Hot water line with cold water emptying loop of the present invention except can adopting above-mentioned time control, also can adopt temperature difference control.
By temperature sensor water temperature among above-mentioned heat supply water source and the hot water line is measured, or only water temperature among the hot water line is measured.
Water temperature difference is apart from greater than design temperature F1 the time between above-mentioned heat supply water source and hot water line, or the hot water line is when going up water temperature and being lower than design temperature F2, after the water of opening hot water line's terminal is chewed, is in conducting state between cold water emptying loop and hot water line; The water that cools off among the hot water line is through the water pump effect, reverse flow in the hot water line, and be back to the heat supply water source through the cold water emptying loop;
Water temperature difference is apart from less than design temperature F1 the time between above-mentioned heat supply water source and hot water line, or the hot water line is in conducting state between heat supply water source and hot water line when going up water temperature and being higher than design temperature F2; The hot water that the heat supply water source flows out, the hot water line that flows through chews discharge at water at last.
Adopt this temperature difference control scheme, just need not a precondition to be set again, promptly start the cold water emptying loop blanking time of chewing according to front and back twice unlatching water as the control of above-mentioned employing time.Generally speaking, above-mentioned design temperature F1 can select 10-60 ℃ in winter, and F2 is 40-70 ℃.
Hot water line with cold water emptying loop of the present invention, when between cold water emptying loop and hot water line, being in conducting state, heat supply water source and hot water line preferably end, the water yield among the hot water line no longer increases, thereby make water pump Nutrison Fibre pumping cold water, quicken the water circulating speed in the cold water emptying loop; When between heat supply water source and hot water line, being in conducting state, cold water emptying loop and hot water line preferably end, and the hot water that the heat supply water source flows out is all chewed discharge by the hot water line through water, and need not to be back to through the cold water emptying loop again the heat supply water source, thereby accelerate the velocity of discharge of hot water.
Hot water line with cold water emptying loop of the present invention fetches boiling water when chewing, and the water pump pump is inhaled not only the water that cools off among the hot water line, also can pump inhales and chew the air that enters by the water of opening.For preventing that air from entering in the water pump, water pump is caused harmful effect, can the air in the pipeline of cold water emptying loop be detected.
When in detecting cold water emptying loop pipeline, return air being arranged, be in conducting state between heat supply water source and hot water line immediately; The hot water that the heat supply water source flows out, the hot water line that flows through chews discharge at water at last.Obviously, above-mentioned detection to return air can have several different methods, comprise direct detection to air, as adopt the sensor of measurement gas flow, flow velocity, composition, also comprise the indirect metering systems such as signal of gathering the current in the pipeline of cold water emptying loop by level sensor, water flow switch etc.
Hot water line with cold water emptying loop of the present invention, when having multiple branch circuit, we also can adopt at interval certain hour to open farthest branch road water and chew, and make the water that cools off among the hot water line on the main line constantly reflux, thereby guarantee that the hot water line has hot water all the time.Promptly adopt following technical scheme: when being installed in parallel several water on hot water line's terminal and chewing, chew from the water of heat supply water source maximum distance and to be automatic valve, or in the outer end of chewing from the water of heat supply water source maximum distance parallel connection-automatic valve again; The every interval of above-mentioned automatic valve certain hour just can be opened automatically, and moment closes.
Among the present invention, ending and conducting of above-mentioned pipeline and equipment room comprises: ending and conducting between hot water line and cold water emptying loop, ending and conducting between heat supply water source and hot water line, ending and conducting between tap water pipe line and hot water line.Between above-mentioned this pipeline equipment by and conducting, can be by controlling and realize to being installed in several valves on the pipeline, simple connection that also can be by pipeline and disconnect conversion and realize.The valve that adopts can be manual.Certainly,, preferably all select automatic valve for making things convenient for Long-distance Control, comprise electromagnetism, pneumatic, surge, the valve of control such as electronic.
Hot water line with cold water emptying loop of the present invention can be used for pressure bearing system, and the heat supply water source is the enclosed water tank.
Hot water line with cold water emptying loop of the present invention, also can be used for non-pressure bearing system, the heat supply water source is an open tank, but the difference in height of the Shui Zui present position of the relative terminal of water level at heat supply water source can guarantee that the water among the hot water line can be chewed normal outflow from water.
Generally speaking, the hot water line with cold water emptying loop of the present invention, the water that is used for opening terminal chew can the normal flow water outlet water system, comprise it being the water of opening terminal to be chewed arranged earlier the transformation that cold water goes out the existing hot-water heating system of hot water again.
In addition, the hot water line with cold water emptying loop of the present invention also can do further improvement.Tap water pipe line is connected on the hot water line between water pump and heat supply water source; When water pump is not activated, be communicated with between tap water pipe line and hot water line; During starting mode of pump, tap water pipe line and hot water line end.By tap water pipe line is connected with the hot water line, by increasing hydraulic pressure among the hot water line, when satisfying the water flow switch signal and producing to the requirement of the hydraulic pressure of flowing through.Certainly, also can be connected any water source with the hot water line, as have water tank of enough water levels etc., reach the effect identical with tap water pipe line with pressure.
Obviously, the hot water line with cold water emptying loop of the present invention after further improving, both can be used for above-mentioned system, and also can be used in the non-pressure bearing system, the difference in height of the Shui Zui present position of the relative terminal of water level at heat supply water source, can not guarantee that the water among the hot water line chews the situation of normal outflow from water.The water-head that heat supply water source and water are chewed does not have too much requirement, and therefore, the use in the Application of Solar Energy field has more advantage.
The heat supply water source that the present invention mentioned refers to provide in the hot-water heating system part of hot water supply, comprises the combination of instant heater and reflux tank, or independent hot water.Hot water comprises enclosed water tank and open tank.Instant heater comprises electric heater, solar thermal collector etc.
Description of drawings
Further specify the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is the principle schematic of the hot water line's with cold water emptying loop of the present invention embodiment one;
Fig. 2 is the principle schematic of the hot water line's with cold water emptying loop of the present invention embodiment two;
Fig. 3 is the principle schematic of the hot water line's with cold water emptying loop of the present invention embodiment three;
Fig. 4 is the principle schematic of the hot water line's with cold water emptying loop of the present invention embodiment four;
Fig. 5 is the principle schematic of the hot water line's with cold water emptying loop of the present invention embodiment five;
Fig. 6 is the principle schematic of the hot water line's with cold water emptying loop of the present invention embodiment six.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Shown in Figure 1, the hot water line of embodiment one with cold water emptying loop, comprise controller 6, heat supply water source 1, hot water line 2, cold water emptying loop 34, cold water emptying loop 34 inlets are connected with hot water line 2, and the outlet of cold water emptying loop is connected with heat supply water source 1.
In the diagram, cold water emptying loop 34 adopts thick line to represent, its inlet also is positioned near on the hot water line at heat supply water source; Also be provided with water pump 23 on the cold water emptying loop 34; The water of cooling is through water pump 23 effects among the hot water line 2, and by shown in the thick-line arrow, promptly the rightabout of the hot water flow direction shown in the thin-line arrow flows in hot water line 2, and is back to heat supply water source 1 through cold water emptying loop 34.
In the present embodiment, the cold water emptying loop 34 that has water pump 23 is installed near 1 place, heat supply water source, is power with water pump 23, and the water of cooling among the hot water line 2 is forced by the reverse circulation shown in the thick-line arrow, be pumped into cold water emptying loop 34, be recycled to then in the heat supply water source 1.Hot water in the heat supply water source 1 flows into rapidly and has soared fully or the part hot water line 2 of cold water that soars, thereby makes and chew 24 by water what directly emit is hot water, rather than cold water.
In the present embodiment, the inlet in cold water emptying loop 34 is installed near 1 place, heat supply water source, comprise the outside, heat supply water source or inboard, the water of cooling among the hot water line 2 is oppositely circulated, thereby the overwhelming majority of using among original hot water line 2 is done cold water emptying, rather than lay pipeline in addition with water spot from terminal, and therefore shortened the length in cold water emptying loop greatly, saved engineering cost greatly.
In addition, present embodiment, hotel, building even sub-district for unified heat supply water, only need unify cold water emptying loop 34 is installed in 1 place, heat supply water source, and need not from each terminal to lay the cold water emptying loop with water spot, make that hot water line 2 transformation is very simple, its installation is also convenient.
Have valve 21 at cold water emptying loop 34 inlet and heat supply water source on 1 the hot water line 2, be magnetic valve, by controller 6 its opening and closing of control.The water of cooling is back in the process at heat supply water source 1 through water pump 23 effects in hot water line 2, and valve 21 is closed, and heat supply water source 1 and hot water line 2 are ended.The water yield among the hot water line 2 no longer increases, thereby makes water pump 23 Nutrison Fibre pumping cold water, quickens the water circulation in the cold water emptying loop.
For with more, the terminal of water spot with water spot hot water line far away, how the booster water pumps of band water flow switch are installed in the hot water line, guarantee that each is enough with the hydraulic pressure of water spot, water flow is normal.Fig. 2 is to embodiment shown in Figure 6, and the water pump 23 in the cold water emptying loop is the booster water pump that utilizes the band water flow switch 231 among the former hot water line exactly.
In embodiment illustrated in fig. 2 two, the cold water emptying loop still adopts thick line to represent.Except whole features, also have following characteristics with embodiment 1:
Water pump 23 also is arranged in hot water line 2; Hot-water line highway section 2-1 with water pump is divided into two parts to described cold water emptying loop:
Cold water emptying loop entrance 4, its inlet is above-mentioned cold water emptying loop inlet, its outlet is positioned on the hot water line 2 of pump intake of water pump 23;
Cold water emptying loop outlet section 3, its outlet is above-mentioned cold water emptying loop outlet, its inlet is positioned on the hot water line of pump discharge of above-mentioned water pump 23;
Above-mentioned cold water emptying loop entrance 4, the hot-water line highway section 2-1 with water pump and 3, three sections pipelines of cold water emptying loop outlet section head and the tail successively connect, and form the cold water emptying loop.
Has valve 22 on the hot water line 2 between the inlet of above-mentioned cold water emptying loop entrance 4 and the inlet of cold water emptying loop outlet section 3; Has valve 31 on the above-mentioned cold water emptying loop outlet section 3; Has valve 41 on the above-mentioned cold water emptying loop entrance 4.
The two employing times of embodiment are controlled.That is:
Open the water of hot water line's 2 terminals and chew 24, during less than the setting-up time T1 in the controller 6, the cold water among the hot water line 2 flows, the water pump 23 of the band water flow switch 231 of flowing through, and water flow switch 231 starts water pump 23 immediately, and signal is transferred to controller 6.Controller 6 by-pass valve controls 31, valve 41 are opened, and cold water emptying loop entrance 4, cold water emptying loop outlet section 3 and 2 of hot water lines are in conducting state; Controller 6 by-pass valve controls 21, valve 22 are closed, and heat supply water source 1 and hot water line 2 end.
Flow of hot water in the relatively hot water lines to, the water that cools off among the hot water line is through water pump 23 effects, as shown shown in the thick-line arrow, oppositely flow into cold water emptying loop entrance 4, then concurrent is through having the hot-water line highway section 2-1 of water pump, and reverse flow is back to heat supply water source 1 at last through cold water emptying loop outlet section 3 again.
Open the water of hot water line's 2 terminals and chew 24, during greater than the setting-up time T1 in the controller 6, controller 6 by-pass valve controls 31, valve 41 are closed, and 2 of cold water emptying loop and hot water lines are in cut-off state; Controller 6 by-pass valve controls 21, valve 22 are opened, and 2 of heat supply water source 1 and hot water lines are in conducting state; The hot water that heat supply water source 1 flows out, the hot water line 2 that flows through chews 24 at water at last and discharges.
The precondition of cold water emptying loop start can be set in controller 6.Open the water of hot water line's 2 terminals and chew 24, less than setting-up time T1, and and blanking time of opening last time during greater than setting-up time T2, controller 6 by-pass valve controls 31, valve 41 are opened, 2 of cold water emptying loop 3,4 and hot water lines just are in conducting state; The water of cooling is just through water pump 23 effects among the hot water line 2, reverse flow in hot water line 2, and be back to heat supply water source 1 through cold water emptying loop 34.
Obviously, if the control to above-mentioned water pump, valve is enough accurate, fetch boiling water and chew at 24 o'clock, cold water has the trend of chewing outflow from water among the hot water line, just produced after a small amount of the outflow just can together with water chew outer air by starting mode of pump after the negative pressure that produces of in-pipe flow suck, reverse flow enters the cold water emptying loop.With the comparable data that above-mentioned setting-up time T1, setting-up time T2 compare, be by controller gather booster pump with the signal of water flow switch realize.
Setting-up time T1 in the controller 6 chew along with water and the heat supply water source between distance lengthening and increase the shortening of distance and less; Above-mentioned setting-up time T1 increases along with the reduction of environment temperature, the rising of environment temperature and reducing.Generally speaking, winter above-mentioned setting-up time T1 can select 3-10 second.The model of water pump is selected also will take into account the length of above-mentioned setting-up time T1 except that the situations such as quantity according to water point in the water return pipeline.
Setting-up time T2 increases along with the reduction of environment temperature, the rising of environment temperature and reducing.Generally speaking, winter above-mentioned setting-up time T2 can select 10-30 minute.
Embodiment illustrated in fig. 3 three, adopt temperature control.The cold water emptying loop is identical with embodiment two, still adopts thick line to represent.In addition, the temperature sensor 51 that detects water temperature is installed on heat supply water source 1; The temperature sensor 5 that detects water temperature is installed on the hot water line 2.
When 2 water temperature difference of above-mentioned heat supply water source 1 and hot water line apart from greater than design temperature F1 the time, or when water temperature is lower than design temperature F2 on the hot water line 2, after the water of unlatching hot water line 2 terminals chews 24, controller 6 by-pass valve controls 31, valve 41 start, and 2 of cold water emptying loop 3,4 and hot water lines are in conducting state; Controller 6 by-pass valve controls 21, valve 22 are closed, and heat supply water source 1 and hot water line 2 end; The water of cooling is through water pump 23 effect among the hot water line 2, reverse flow in hot water line 2, and be back to heat supply water source 1 through the cold water emptying loop.
2 water temperature difference of above-mentioned heat supply water source 1 and hot water line are apart from less than design temperature F1 the time, or when water temperature was higher than design temperature F2 on the hot water line 2, controller 6 by-pass valve controls 31, valve 41 were closed, and 2 of cold water emptying loop and hot water lines are in cut-off state; Controller 6 by-pass valve controls 21, valve 22 are opened, and 2 of heat supply water source 1 and hot water lines are in conducting state; The hot water that heat supply water source 1 flows out, the hot water line 2 that flows through chews 24 at water at last and discharges.
Embodiment illustrated in fig. 4 four, be the further improvement on embodiment two or embodiment three, promptly at the arrival end sensor installation 52 of cold water emptying loop entrance 4.Sensor 52 can be a water flow switch, level sensor etc., when in this pipeline return air being arranged, sensor 52 arrives controller 6 to signal feedback, then control 2 of heat supply water source 1 and hot water lines and be in conducting state immediately, the hot water that heat supply water source 1 flows out flows into hot water line 2, thereby has avoided the harmful effect of air to water pump.
In addition, among the embodiment four, be installed in parallel N water on hot water line's terminal and chewed, 241,242 ..., 24N, wherein valve 24N from the heat supply water source 1 distance farthest, the outer end of a valve 24N automatic valve 240 in parallel.
Among the embodiment four, automatic valve 240 every interval certain hours just can be opened automatically, and moment closes.When automatic valve 240 was opened at every turn, the hot water line just can make according to the control method of embodiment two or embodiment three:
The water of cooling is through water pump 23 effects among the hot water line 2, and by shown in the thick-line arrow, promptly the rightabout of the hot water flow direction shown in the thin-line arrow flows in hot water line 2, and is back to heat supply water source 1 through cold water emptying loop 34;
Hot water in the heat supply water source 1 flows into the hot water line 2 who has soared fully or partly soared cold water rapidly.
Hot water in above-mentioned hot water line flows to water and chews 24, and before promptly will discharging, automatic valve 240 is closed.
Above-mentioned automatic valve 240 time openings and closing, the hot water line is regularly the reflux emptying and introduce hot water of the water of cooling.Like this, when other terminal valve, as 241,242 ..., when 24N opens, just can directly emit hot water.
Obviously, we also can carry out this simple improvement on existing hot water line, make to have hot water all the time among the hot water line, that is:
The hot water line has shared longer main line, and during multiple branch circuit, branch road is farthest directly linked to each other with the heat supply water source, and make its state that is in Chang Kai or regularly opens, make the water that cools off among the hot water line on the main line constantly be back to the heat supply water source, thereby guarantee that the hot water line has hot water all the time.
Embodiment illustrated in fig. 5 five, be the further improvement on embodiment two, embodiment three or embodiment four.By valve 26 tap water pipe line 20 is connected with hot water line 2, by increasing hydraulic pressure among the hot water line, when satisfying water flow switch 231 signals and producing to the requirement of the hydraulic pressure of flowing through.Certainly, also can be connected any water source with hot water line 2, as have water tank of enough water levels etc., reach the effect identical with tap water pipe line with pressure.
Tap water pipe line 20 is connected on the hot water line 2 at 1 at water pump 23 and heat supply water source through valve 26.When water pump 23 is not activated, 2 connections of tap water pipe line 20 and hot water line; When water pump 23 started, tap water pipe line 20 and hot water line 2 ended.
For preventing that the water in the tap water pipe line 20 from recharging heat supply water source 1, among 1 the hot water line 2 valve 21 is set at tap water pipe line 20 and heat supply water source.When valve 26 was in opening, valve 21 was closed all the time.
Embodiment five, can be used for pressure bearing system, and heat supply water source 1 is the enclosed water tank; Also can be used for non-pressure bearing system, heat supply water source 1 is an open tank, even the difference in height of the Shui Zui present position of the relative terminal of water level at heat supply water source, can not guarantee that the water among the hot water line chews the situation of normal outflow from water.Therefore, the water-head that heat supply water source and water are chewed does not have too much requirement, and therefore, the use in the Application of Solar Energy field has more advantage.
Among above-mentioned all embodiment, by or conducting be to realize by the control that 6 pairs of controllers are installed in several two-port valve doors on the pipeline; Described two-port valve door comprise electromagnetism, pneumatic, surge, the automatic valve of electronic control.
Embodiment six shown in Figure 6, the cold water emptying loop is all identical with embodiment two to five, and control method also can adopt one of them.
Embodiment six, replaced a plurality of two-port valves with many logical multidigit valves, that is: adopt two position three-way valve 27 to be connected in the outlet of cold water emptying loop entrance 4 with 2 of hot water lines; The inlet of cold water emptying loop outlet section 3 adopts two position three-way valve 28 to be connected with 2 of hot water lines; 2 of tap water pipe line 20 and hot water lines adopt two position three-way valve 29.
In addition, among the embodiment six, heat supply water source 1 mainly contains return water tank 12, instant heater 11 is formed.Hot water line 2 inlet is connected with instant heater 11, can draw instant heated hot water at any time, with using with having.The outlet of cold water emptying loop outlet section 3 is connected with return water tank 12.The water of cooling is back to return water tank 12 through the cold water emptying loop among the hot water line 2,13 is transported in the instant heater 11 by the road again.Like this, cold water is reheated utilization after refluxing.
More than be one of embodiments of the present invention,, do not spend performing creative labour, on the basis of the foregoing description, can do multiple variation, can realize purpose of the present invention equally for those skilled in the art.But this variation obviously should be in the protection domain of claims of the present invention.

Claims (10)

1. the hot water line who has the cold water emptying loop, comprise that controller (6), heat supply water source (1), hot water line (2), cold water emptying loop (34,3,4,2-1), water chews (24), cold water emptying loop (34,4) inlet is connected with hot water line (2), cold water emptying loop (34,3) outlet is connected with heat supply water source (1), it is characterized in that: above-mentioned cold water emptying loop inlet also is positioned near on the hot water line at heat supply water source, water chew with the heat supply water source between be connected for the single tube road; Also be provided with water pump (23) on the cold water emptying loop (34); Cooling water among the hot water line (2) is through water pump (23) effect, reverse flow in hot water line (2), and be back to heat supply water source (1) through cold water emptying loop (34).
2. hot water line as claimed in claim 1 is characterized in that: above-mentioned water pump (23) also is arranged in hot water line (2); Hot-water line highway section (2-1) with water pump is divided into two parts to described cold water emptying loop:
Cold water emptying loop entrance (4), its inlet is above-mentioned cold water emptying loop inlet, its outlet is positioned on the hot water line (2) of pump intake of water pump (23);
Cold water emptying loop outlet section (3), its outlet is above-mentioned cold water emptying loop outlet, its inlet is positioned on the hot water line of pump discharge of above-mentioned water pump (23);
Above-mentioned cold water emptying loop entrance (4), the hot-water line highway section (2-1) with water pump and cold water emptying loop outlet section (3), three sections pipeline head and the tail connections successively form the cold water emptying loop.
3. adopt hot water line's as claimed in claim 2 control method, it is characterized in that:
The water of A, unlatching hot water line (2) terminal is chewed (24), and during less than setting-up time T1, conducting between cold water emptying loop (3,4) and hot water line (2) ends between heat supply water source (1) and hot water line (2); The water of cooling is through water pump (23) effect among the hot water line (2), reverse flow in hot water line (2), and be back to heat supply water source (1) through cold water emptying loop (34);
The water of B, unlatching hot water line (2) terminal is chewed (24), and during greater than setting-up time T1, conducting between heat supply water source (1) and hot water line (2) ends between cold water emptying loop (3,4) and hot water line (2); The hot water that heat supply water source (1) flows out, the hot water line that flows through (2) discharges at Shui Zui (24).
4. hot water line's as claimed in claim 3 control method, it is characterized in that: after the water of unlatching hot water line (2) terminal is chewed (24), during less than setting-up time T1, and and opened blanking time that water chews last time during greater than setting-up time T2, just carry out hot water line's control according to the described control method of claim 3.
5. hot water line's as claimed in claim 4 control method, it is characterized in that: above-mentioned water pump (23) is the booster pump that has water flow switch (231); With the comparable data that above-mentioned setting-up time T1, setting-up time T2 compare, be with controller (6) gather booster pump with water flow switch (231) unlatching of sending or the time of shutdown signal be benchmark.
6. adopt hot water line's as claimed in claim 2 control method, it is characterized in that: by temperature sensor (5,51) water temperature among above-mentioned heat supply water source (1) and the hot water line (2) is measured, or only water temperature among the hot water line (2) is measured;
When the water temperature difference distance is greater than design temperature F1 between above-mentioned heat supply water source (1) and hot water line (2), or hot water line (2) is when going up water temperature and being lower than design temperature F2, after the water of unlatching hot water line (2) terminal is chewed (24), conducting between cold water emptying loop (3,4) and hot water line (2) ends between heat supply water source (1) and hot water line (2); The water of cooling is through water pump (23) effect among the hot water line (2), reverse flow in hot water line (2), and be back to heat supply water source (1) through cold water emptying loop (34);
When the water temperature difference distance is less than design temperature F1 between above-mentioned heat supply water source (1) and hot water line (2), or hot water line (2) is when going up water temperature and being higher than design temperature F2, conducting between heat supply water source (1) and hot water line (2) ends between cold water emptying loop (3,4) and hot water line (2); The hot water that heat supply water source (1) flows out, the hot water line that flows through (2) discharges at Shui Zui (24) at last.
7. as claim 4 or the described hot water line's of claim 6 control method, it is characterized in that: when in detecting cold water emptying loop (34,4) pipeline, return air being arranged, conducting immediately between heat supply water source (1) and hot water line (2) ends between cold water emptying loop (3,4) and hot water line (2) immediately; The hot water that heat supply water source (1) flows out, the hot water line that flows through (2) discharges at Shui Zui (24); Aforementioned detection comprises that the mode by the water level signal in the pipeline of water flow switch collection cold water emptying loop (34,4) realizes.
8. hot water line's as claimed in claim 7 control method is characterized in that: tap water pipe line (20) is connected on the hot water line (2) between water pump (23) and heat supply water source (1); Water pump (23) is communicated with between tap water pipe line (20) and hot water line (2) when being not activated; When water pump (23) started, tap water pipe line (20) and hot water line (2) ended.
9. hot water line's as claimed in claim 7 control method, it is characterized in that: when being installed in parallel several water on hot water line's terminal and chewing (24), chew (24) from the water of heat supply water source (1) maximum distance and be automatic valve, or at an outer end automatic valve in parallel again of chewing (24) from the water of heat supply water source (1) maximum distance; The every interval of above-mentioned automatic valve certain hour just can be opened automatically, and moment closes.
10. hot water line's as claimed in claim 7 control method is characterized in that: above-mentioned by or conducting be the control that is installed in several valves on the pipeline to be realized by controller (6); Described valve comprise electromagnetism, pneumatic, surge, the automatic valve of two logical or threeways of electronic control.
CN200910045549A 2009-01-20 2009-01-20 Hot-water pipeline with cold-water emptying loop and control method thereof Pending CN101782249A (en)

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Publication number Priority date Publication date Assignee Title
DE10024803A1 (en) * 1999-05-25 2000-11-30 Vaillant Joh Gmbh & Co Control method for consumable water system involves operating circulation pump intermittently during predefined time period extending over greater part of day
US20050001046A1 (en) * 2003-04-16 2005-01-06 Oliver Laing System and method for making hot water available in a domestic water installation and domestic water installation
CN200972257Y (en) * 2006-11-21 2007-11-07 任天飞 Circulation heater for cold water section of water heater
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107923159A (en) * 2015-07-02 2018-04-17 3Eflow公司 Preserve the method and fluid dispensing system of liquid and thermal energy
CN107923159B (en) * 2015-07-02 2020-04-21 3Eflow公司 Method for preserving liquid and thermal energy and liquid distribution system

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Application publication date: 20100721