CN104344567A - Water heater pipeline anti-freezing control method and system and water heater - Google Patents
Water heater pipeline anti-freezing control method and system and water heater Download PDFInfo
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- CN104344567A CN104344567A CN201310313665.3A CN201310313665A CN104344567A CN 104344567 A CN104344567 A CN 104344567A CN 201310313665 A CN201310313665 A CN 201310313665A CN 104344567 A CN104344567 A CN 104344567A
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Abstract
Provided are a water heater pipeline anti-freezing control method and system and a water heater. The method includes acquiring environment temperature and water temperature and water level of a water tank of the water heater; comparing the environment temperature and the preset environment temperature; when the environment temperature is lower than the preset environment temperature, executing the circulation heating water producing mode where water in a water inlet pipe and a water outlet pipe of the water heater flows in a circulation mode according to the water temperature and the water level of the water tank of the water heater; when the water heater is applied under the condition that the environment temperature is lower than the preset environment temperature, entering the circulation heating water producing mode enabling the water in the water inlet pipe and the water outlet pipe of the water heater to flow in the circulation mode. Flowing water passes through both the cold water inlet pipe and the circulation water inlet pipe of the water heater, the requirement for hot water usage can be met, and the pipeline has no freezing risks.
Description
Technical field
The invention belongs to intelligent water heater field, particularly relate to a kind of Water heater pipeline antifreeze control method, system and water heater.
Background technology
At present, heat-pump hot-water unit, due to the impact by temperature, causes a part of region to use.Particularly North of Yangtze River region, winter, temperature was lower than 0 DEG C, and heat-pump hot-water unit water pipe is easily frozen even by bursting by freezing.Particularly existing directly-heated produces water function and the heat-pump hot-water unit of band circulation heat insulation function, and it has directly-heated water production pipeline, outlet conduit, circulating water pipeline, and wherein directly-heated water producing pipe connects running water pipe, and circulation water inlet pipe and outlet pipe are connected with external heat accumulation water heater tank.Unit is in directly-heated when producing water function, and running water enters unit through directly-heated water producing pipe, and the water in circulation waterway and discharge pipe line is inactive state, is likely frozen in; In like manner, if when it is in circulation heat insulation function, the water of water-heater water tank enters unit circulating-heating through circulation water inlet pipe, and the water in inlet pipeline and discharge pipe line is inactive state, is also likely frozen in.Therefore, be necessary to be further improved.
Most of high-temperature direct-heating type pipeline is mainly deposited and is wanted following two drawbacks in the market:
1, during use in winter unit, heat according to directly-heated mode, due to the decay of source pump water heating ability when environment temperature is lower, unit aquifer yield within the same working time is less, and winter hot water machine demand comparatively large, this kind of water heating pattern cannot meet the user demand of user in most cases.
2, according to circulation water heating pattern, cold water inlet does not have water flow for a long time and causes pipeline bursting by freezing.Current most means to prevent freezing increases antifreeze heat tape on the cold water inlet and circulation inlet pipeline of unit, the mode of heat tape heating is adopted to prevent water pipe from freezing crack, but this kind of method production efficiency is lower, cost is higher and heat tape exists certain potential safety hazard compared with running in rugged environment for a long time out of doors.
Summary of the invention
The object of the present invention is to provide a kind of Water heater pipeline antifreeze control method, be intended to solve the existing water heater water yield of use in winter and cannot meet user demand, even waterpipe there will be by the problem of bursting by freezing.
The present invention is achieved in that a kind of Water heater pipeline antifreeze control method, and described method comprises:
The water temperature of acquisition environment temperature, water-heater water tank and water level;
The described environment temperature got is compared with the default environment temperature of water heater;
When described environment temperature is lower than default environment temperature, then according to water temperature and the water level execution circulating-heating aqueous mode of described water-heater water tank.
Another object of the present invention is to provide a kind of Water heater pipeline antifreeze control system, comprising:
Acquisition module, for obtaining environment temperature, the water temperature of water-heater water tank and water level;
Comparison module, for comparing the described environment temperature got with the default environment temperature of water heater;
First Executive Module, for when described environment temperature is lower than default environment temperature, then according to water temperature and the water level execution circulating-heating aqueous mode of described water-heater water tank.
Above-mentioned Water heater pipeline antifreeze control method and system, when environment temperature is lower than default environment temperature, then control the circulating-heating aqueous mode that unit enters the water circulation flowing in the water inlet pipe and outlet pipe that can make water heater, the cold water inlet of water heater and circulation water inlet pipe have the water of flowing to pass through, using amount of hot water can be met, ensure that again pipeline does not have the risk of bursting by freezing, instead of antifreeze heat tape mode in existing scheme, effectively reduce production cost and the security risk of water heater, significantly improve production efficiency.
Another object of the present invention is to provide a kind of water heater, comprise Water heater pipeline antifreeze control system described above.
Above-mentioned water heater is applied to environment temperature lower than default environment temperature, then enter the circulating-heating aqueous mode of the water circulation flowing in the water inlet pipe and outlet pipe that can make water heater, the cold water inlet of water heater and circulation water inlet pipe have the water of flowing to pass through, using amount of hot water can be met, and pipeline does not have the risk of bursting by freezing equally, instead of antifreeze heat tape mode in existing scheme, effectively reduce production cost and the security risk of water heater, significantly improve production efficiency.
Accompanying drawing explanation
Fig. 1 is the pipeline configuration schematic diagram of the water heater that the embodiment of the present invention provides;
Fig. 2 is the flow chart of the Water heater pipeline antifreeze control method that one embodiment of the invention provides;
Fig. 3 is the flow chart of the Water heater pipeline antifreeze control method that another embodiment of the present invention provides;
Fig. 4 is the flow chart of the low-temperature heat water that the embodiment of the present invention provides;
Fig. 5 is the flow chart of the normal temperature heating water processed that the embodiment of the present invention provides;
Fig. 6 is the flow chart of the Water heater pipeline antifreeze control method that further embodiment of this invention provides;
Fig. 7 is the module map of the Water heater pipeline antifreeze control system that the embodiment of the present invention provides;
Fig. 8 is the module map of the first Executive Module that the embodiment of the present invention provides;
Fig. 9 is the module map of the second Executive Module that the embodiment of the present invention provides.
Detailed description of the invention
In order to make the technical problem to be solved in the present invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
See Fig. 1, present embodiments provide a kind of antifreeze Teat pump boiler, comprise firing equipment 1 and control device 2, on firing equipment 1, be connected with cold water inlet 3 and circulation water inlet pipe 4 simultaneously, cold water inlet 3 is communicated with running water, circulation water inlet pipe 4 is communicated with water-heater water tank (not shown), and the running water connected by cold water inlet 3 enters water-heater water tank after heating through firing equipment 1, cold water inlet 3 is connected in series first on-off valve 31, this the first on-off valve 31 can control the break-make of cold water inlet 3, further, circulation water inlet pipe 4 comprises the first bypass duct 41 and the second bypass duct 42, be connected between two pipes, first bypass duct 41 is connected with cold water inlet 3, and it is near the water side of the first on-off valve 31, second bypass duct 42 is connected with firing equipment 1.
In the present embodiment, antifreeze Teat pump boiler is provided with the environment temperature sensor 51 for testing environment temperature, be provided with to arrange in water-heater water tank and detect the cooling-water temperature sensor 52 of water temperature and the condensate tank of dehumidifier 53 of sensed water level, water inlet temperature sensor 54 and outlet temperature sensor 55 is respectively arranged with at the water inlet of firing equipment 1 and delivery port, environment temperature sensor 51, cooling-water temperature sensor 52, condensate tank of dehumidifier 53, water inlet temperature sensor 54 and outlet temperature sensor 55 are all electrically connected with control device 2 and transmit to control device 2 and be respectively environment temperature T1, water temperature T 2, water level TS, water inlet temperature T3, the Detection Information of outlet temperature T4.
In the present invention, when environment temperature is higher, control unit when adopting moisturizing directly-heated pattern water heating or circulation water heating pattern, even if cold water inlet or circulating water pipe exist static water, because environment temperature is taller and bigger in the freezing temperature of water, water pipe can not bursting by freezing, and when environment is lower, control unit and adopt circulation water heating pattern, circulation water inlet pipe 4 is by water input firing equipment 1 heating and thermal insulation in water-heater water tank, in this process, part water directly enters heating in firing equipment 1 by the second bypass duct 42, and some water can enter cold water inlet 3 via the second bypass duct 42, and then enter heating and thermal insulation in firing equipment 1, there is circulating water in cold water inlet 3 always, simultaneously because the first bypass duct 41 is near the water side of the first on-off valve 31, water is not had between such first bypass duct 41 and the first on-off valve 31, cold water inlet 3 can not freeze because ambient temperature is lower it can thus be appreciated that, owing to having preset unit heating mode at different ambient temperatures, there is circulating water to exist in cold water inlet 3 always, only can there is the static water of the freezing temperature being greater than water or the water of flowing in circulation water inlet pipe 4, it there will not be the situation of bursting by freezing, antifreezing effect is better, and whole pipeline structure is simple, cost is low, be easy to operation, safety coefficient simultaneously during water heater working is higher.
Refer again to Fig. 1, due to the effect of the first bypass duct 41, between circulation water inlet pipe 4 and cold water inlet 3, be in connected state, but for having prevented cold water from directly entering water-heater water tank, then circulation water inlet pipe 4 should be avoided to occur the situation of backflow.The first check valve 43 can be connected in series in the first bypass duct 41 to this, in the second bypass duct 42, be also serially connected with the first check valve 43 simultaneously, certain direction for two first check valves 43 should be the water outlet direction along circulation water inlet pipe 4, like this when circulating insulation, water enters firing equipment 1 by the first bypass duct 41 and the second water inlet pipe 42, and when tap water heating, running water directly enters firing equipment 1 by cold water inlet 3, and the first bypass duct 41 and the second bypass duct 42 can not be entered because of the effect running water of the first check valve 43, avoid tap water direct to take back in inflow water-heater water tank.See Fig. 3, certainly one second on-off valve 44 or the second check valve (not shown) can also be set at the water inlet of circulation water inlet pipe 4, if the second on-off valve 44, when directly by tap water heating, close the second on-off valve 44 on closed loop water inlet pipe 4, running water can enter the second bypass duct 42 by the first bypass duct 41, but it directly can not enter water-heater water tank, but enter firing equipment 1 along the water outlet direction of circulation water inlet pipe 4, if in like manner the second check valve, its direction is the water outlet direction of circulation water inlet pipe 4, running water also can not flow directly in water-heater water tank.
Further, cold water inlet 3 is also serially connected with a flow control valve 32, flow control valve 32 be located at the first bypass duct and cold water inlet link and between firing equipment and cold water inlet link, it can regulate the current size on cold water inlet 3, is conducive to the heating water temperature regulating firing equipment 1 like this.And conveniently to the adjustment of flow control valve 32, it can be electrically connected with control device 2, the flow of adjust flux control valve 32 in control device 2.
The first on-off valve 31 be serially connected on cold water inlet 3 is generally located near the water inlet of cold water inlet 3, the namely water inlet of the contiguous cold water inlet 3 of the water inlet end of the first on-off valve 31, like this when adopting circulation water inlet insulation, also be difficult to there is running water between first on-off valve 31 and the water inlet of cold water inlet 3, the various piece of cold water inlet 3 neither can the bursting by freezing because of the impact of environment temperature.
Firing equipment 1 is provided with one and converges pipe 11 and an outlet pipe 12, outlet pipe 12 is connected with water-heater water tank, converge the bottom that firing equipment 1 is located at by pipe 11, and it can be used as the water inlet pipe of firing equipment 1 to be connected with cold water inlet 3 and the second bypass duct 42 respectively, namely all converge to convergence pipe 11 by the water in cold water inlet 3 and circulation water inlet pipe 4 and flow into heating in firing equipment 1.Convergence pipe 11 can be provided with a draining valve 111, when water heater does not use for a long time, by draining valve 111, the water in firing equipment 1 can be discharged, and the bottom of firing equipment 1 is located at owing to converging pipe 11, draining valve 111 draining is more complete, converge on pipe 11 for draining valve 111 for being detachably located at, and it is electrically connected with control device 2, namely draining valve 111 draining is controlled with control device 2, more convenient, certainly in order to the operability of reinforced platoon's water valve 111, it can also set up hand switch.
Particularly, all motor-driven valve can be adopted for the first on-off valve 31 on cold water inlet 3 and the second on-off valve 44 on circulating water inlet 4, motor-driven valve is also electrically connected with control device 2, the break-make of motor-driven valve is controlled with control device 2, more convenient, the each course of work of water heater all can be operated by control system, and automaticity is higher.Firing equipment 1 can adopt bushing type firing equipment or plate heating device or water fluorine firing equipment etc., to realize the heat exchange of water and other media.In the present embodiment, heater 1 is heat exchanger, can be specifically board-like or telescopic water fluorine heat exchanger; In other embodiments, heater 1 can be electrical bar firing equipment, also can be gas heating equipment.
When setting up water-heater system, first set threshold values, the preset temperature T2s of water-heater water tank, the threshold value of the preset water level TSs of water-heater water tank and the threshold value of default import and export water temperature T 3s of presetting environment temperature T1s.In follow-up debugging or application process, each above-mentioned threshold value preset can be adjusted by man-machine interface or change.
Composition graphs 2,3, be the Water heater pipeline antifreeze control method in an embodiment, the method comprises:
Step S110, the water temperature T 2 of acquisition environment temperature T1, water-heater water tank and water level TS.Particularly, detect corresponding data be sent to checkout gear 2 by above-mentioned environment temperature T1 sensor 51, cooling-water temperature sensor 52, condensate tank of dehumidifier 53.Preferably, in the water process processed of water heater, the water temperature T 2 of water-heater water tank and water level TS need Real-time Obtaining and Detection Information are fed back to control device 2.In the present embodiment, heater 1 is heat exchanger, can be specifically board-like or the water fluorine heat exchanger of tubular type; In other embodiments, heater 1 can be electrical bar firing equipment, also can be gas heating equipment.
Step S120, compares the environment temperature T1 got with the default environment temperature T1s of water heater.Current environment temperature T1 is carried out contrast with the threshold value of the default environment temperature T1s preset and obtains comparative result by water heater, performs step S130 or step S140 according to comparative result.As preferably, preset environment temperature T1s and generally scope be set---0 to 20 degree Celsius, and further, scope can be set to 10 to 12 degrees Celsius; And different according to the weather of local environment, now default environment temperature T1s or slightly deviation, user can regulate according to actual conditions.
Step S130, when described environment temperature T1 is lower than default environment temperature T1s, then according to water temperature T 2 and the water level TS execution circulating-heating aqueous mode of described water-heater water tank.Particularly, the water inlet pipe of water heater comprises cold water inlet 3 and circulation water inlet pipe 4.It should be noted that, circulating-heating aqueous mode can make the water circulation flowing in the water inlet pipe (3,4) of water heater and outlet pipe 12, and the water circulation controlled while controlling the 1 pair of water heating of described heater when water heater runs on circulating-heating aqueous mode in described heater 1, the water inlet pipe (3,4) of described water heater, the outlet pipe 12 of described water heater and described water-heater water tank flows.And wherein, when the water level TS of water-heater water tank is too low, when needing from outer moisturizing, before moisturizing, water heater first performs circulating-heating aqueous mode and to be heated to by original water to a certain degree again from outer moisturizing, and after avoiding that the water temperature T 2 of original water is not high and adding a large amount of cold water again, overall water temperature T 2 sharply being declined affects user's comfort.
Above-mentioned Water heater pipeline antifreeze control method is when environment temperature T1 is lower than default environment temperature T1s, then control the circulating-heating aqueous mode that unit enters the water circulation flowing in the water inlet pipe 3,4 and outlet pipe 12 that can make water heater, the cold water inlet 3 of water heater and circulation water inlet pipe 4 have the water of flowing to pass through, using amount of hot water can be met, ensure that again pipeline does not have the risk of bursting by freezing, instead of antifreeze heat tape mode in existing scheme, effectively reduce production cost and the security risk of water heater, significantly improve production efficiency
Further, in one embodiment, with reference to figure 2, Water heater pipeline antifreeze control method also comprises step S140 after step 120.
Step S140, when described environment temperature T1 is not less than default environment temperature T1s, then performs moisturizing directly-heated aqueous mode or described circulating-heating aqueous mode according to the water level TS of described water-heater water tank and water temperature T 2.When the environment temperature T1 of water heater is higher than default environment temperature T1s, unit can enter moisturizing directly-heated or circulating-heating aqueous mode according to the water temperature T 2 in water-heater water tank and water level TS condition, because now environment temperature T1 is greater than the freezing temperature of water, even if wherein in a water inlet pipe, water remains static, water inlet pipe does not have the risk of bursting by freezing yet.Moisturizing directly-heated aqueous mode is that the inlet valve opening described water heater of general significance covers cold water to the heater 1 directly rear straight use of heating from outward, is generally used for the lower situation of water level TS of water-heater water tank.With reference to figure 1, in the present embodiment, the inlet valve of water heater is the first on-off valve 31, can be specifically magnetic valve.If water level TSs is higher and when not needing moisturizing, then circulating-heating aqueous mode can be used first to use water in water-heater water tank, and the water of water-heater water tank is generally in keeping warm mode, relatively energy-conservation during water processed.
Further, composition graphs 1,4, in one embodiment, step S130 comprises the following steps:
Step S131, when described environment temperature T1 is lower than default environment temperature T1s, the current water temperature T2 of water-heater water tank described in Real-time Obtaining.
Step S132, compares the current water temperature T2 got and preset temperature T2s, when described current water temperature T2 is lower than preset temperature T2s, then performs described circulating-heating aqueous mode; When described current water temperature T2 is not less than preset temperature T2s, the current level TS of water-heater water tank described in Real-time Obtaining.Preset temperature T2s is the made hot water temperature of water heater, and different with amblent air temperature according to the season of application, preset temperature is generally arranged between 0 to 70 degree Celsius, can be 45,50,55,60,65 degrees Celsius.
Step S133, compares the current level TS got and preset water level TSs, and when described current level TS is lower than preset water level TSs, then the inlet valve action controlling described water heater makes it from outer moisturizing; When described current level TS is not less than preset water level TSs and described current water temperature T2 is not less than preset temperature T2s, then controls described heater 1 and stop heating water.Particularly, in the process of moisturizing, when current water temperature T2 is lower than preset temperature T2s, also need to perform simultaneously in step S132 when described current water temperature T1 is lower than preset temperature T1s, then perform described circulating-heating aqueous mode, or perform step S132 and current water temperature T2 is not less than after preset temperature T2s continue again to perform this step.Preset water level TSs can be arranged according to the water-holding quantity size of water-heater water tank, such as, be set to the half or 1/3rd of the full water amount of water-heater water tank.
In the present embodiment, by control device 2 at interval of Preset Time △ T to the detection carrying out environment temperature T1 by environment temperature T1 sensor 51, when environment temperature T1 < T1s being detected, control device 2 continues through the water temperature T 2 that water temperature T 2 sensor 52 detects water-heater water tank, as T2 < T2s, control device 2 cuts out the first on-off valve 31, open Flow-rate adjustment water valve 32 and control unit and enter circulating-heating aqueous mode, wherein, the water of water-heater water tank flows through firing equipment 1 through circulation water inlet pipe 4, as T2 >=T2s, control device 2 continues through the water level TS that Level monitor 53 detects water-heater water tank and controls, if water-heater water tank actual water level TS does not meet preset water level TSs, namely when TS does not meet TSs, unit enters Water supplement pattern, control device 2 opens the first on-off valve 31 and Flow-rate adjustment water valve 32, running water enters unit through cold water inlet 3, unit continues the water temperature T 2 detecting water-heater water tank after entering Water supplement pattern, after T2 < T2s again being detected, unit enters circulating-heating aqueous mode, can avoid when moisturizing process, the water temperature T 2 degree of water-heater water tank sharply declines and affects hot water machine comfort, can avoid when moisturizing overlong time to a certain extent, the water that circulation water inlet pipe 4 does not flow for a long time passes through and bursting by freezing simultaneously.
Further, composition graphs 1,3,5, in one embodiment, step S140 comprises the following steps:
Step S141, when described environment temperature T1 is not less than default environment temperature T1s, the current level TS of water-heater water tank described in Real-time Obtaining.
Step S142, compares the current level TS got and preset water level TSs, when described current level TS is lower than preset water level TSs, then performs described moisturizing directly-heated aqueous mode; When described current level TS is not less than preset water level TSs, the current water temperature T1 of water-heater water tank described in Real-time Obtaining.
Step S143, compares the current water temperature T2 got and preset temperature T2s, when described current water temperature T2 is lower than preset temperature T2s, then performs described circulating-heating aqueous mode; When described current water temperature T2 is not less than preset temperature T2s, then controls described heater 1 and stop heating water.
In the present embodiment, by control device 2 at interval of Preset Time △ T to the detection carrying out environment temperature T1 by environment temperature T1 sensor 51, as T1 >=T1s, control device 2 continues detection water-heater water tank being carried out to water level TS by condensate tank of dehumidifier 53, when detecting that water level TS does not meet default water TSs, control device 2 controls unit and opens on-off valve 31 and Flow-rate adjustment water valve 32, and unit enters moisturizing directly-heated aqueous mode; Now, cold water flows through heater 1 through cold water inlet 3; If when control device 2 detects that the water level TS of water-heater water tank meets TSs, control device 2 continues through the water temperature T 2 that water temperature T 2 sensor 52 detects water-heater water tank, as T2 >=T2s, control device 2 controls compressor emergency shutdown, and now the water temperature T 2 of water-heater water tank and water level TS all reach predetermined condition; As T2 < T2s, unit enters circulating-heating aqueous mode, and now recirculated water enters unit through circulation water inlet pipe 4.
Composition graphs 1,6, wherein in an embodiment, Water heater pipeline antifreeze control method also comprises:
Step S210, obtains water inlet temperature T3 and the outlet temperature T4 of described heater 1.Water inlet temperature T3 and the outlet temperature T4 of heater 1 is detected by water inlet temperature T3 sensor 54 and outlet temperature T4 sensor 55.
Step S220, by the water inlet temperature got and outlet temperature and preset and import and export water temperature and compare.Wherein, when the minimum of a value in described water inlet temperature T3 and outlet temperature T4 is not less than default import and export water temperature T 3s, water heater is failure to actuate.
Step S230, when the minimum of a value in described water inlet temperature T3 and outlet temperature T4 is lower than default import and export water temperature T 3s, then controls the work of described heater 1 and the water circulation in the water inlet pipe of described heater 1, described water heater, the outlet pipe 12 of described water heater and described water-heater water tank is flowed.Particularly, be mainly used in when water heater is at holding state, when the less value in water inlet temperature T3, outlet temperature T4 is lower than the freezing temperature of water---when 0 degree Celsius, control unit and enter anti-freeze pattern, under this pattern, unit host machine part (comprising compressor) is not generally opened, control unit water inlet pipe, water flow in outlet pipe and water-heater water tank, keeps the water flow of pipeline and prevents Pipeline Water from freezing.And the freezing temperature of water is different according to the weather of local environment, presets environment temperature T1s not necessarily 0 degree Celsius, generally scope be set---0 to 20 degree Celsius, and further, scope can be set to 10 to 12 degrees Celsius, or slightly deviation, user can regulate according to actual conditions.In a preferred embodiment, anti-freeze pattern just performs when the water level TS of water-heater water tank meets preset water level TSs.
In addition, composition graphs 1,7, additionally provides a kind of Water heater pipeline antifreeze control system, and described system comprises acquisition module 110, comparison module 120, first Executive Module 130 and the second Executive Module 140.
Acquisition module 110 is for obtaining environment temperature T1, the water temperature T 2 of water-heater water tank and water level TS.
Comparison module 120 is for comparing the described environment temperature T1 got with the default environment temperature T1s of water heater.
First Executive Module 130 for when described environment temperature T1 is lower than default environment temperature T1s, then performs circulating-heating aqueous mode according to the water temperature T 2 of described water-heater water tank and water level TS.
Further, in one embodiment, Water heater pipeline antifreeze control system also comprises the second Executive Module 140.Second Executive Module 140 for when described environment temperature T1 is not less than default environment temperature T1s, then performs moisturizing directly-heated aqueous mode or described circulating-heating aqueous mode according to the water level TS of described water-heater water tank and water temperature T 2.
Further, in one embodiment, with reference to figure 1,8, described first Executive Module 130 comprises: water temperature acquiring unit 131, first compares performance element 132, second and compares performance element 133.
Water temperature acquiring unit 131, for when described environment temperature T1 is lower than default environment temperature T1s, the current water temperature T2 of water-heater water tank described in Real-time Obtaining; First compares performance element 132 for being compared by the current water temperature got T2 and preset temperature T2s, when current water temperature T2 is lower than preset temperature T2s, then performs described circulating-heating aqueous mode; When described current water temperature T2 is not less than preset temperature T2s, the current level TS of water-heater water tank described in Real-time Obtaining.Second compares performance element 133 for being compared by the current level got TS and preset water level TSs, and when described current level TS is lower than preset water level TSs, then the inlet valve action controlling described water heater makes it from outer moisturizing; When described current level TS is not less than preset water level TSs and described current water temperature T2 is not less than preset temperature T2s, then controls described heater 1 and stop heating water.
Further, in one embodiment, with reference to figure 1,9, described second Executive Module 140 comprises:, water level acquiring unit 141, the 3rd compares performance element 142, the 4th and compares performance element 143.
Water level acquiring unit 141 is for when described environment temperature T1 is not less than default environment temperature T1s, and then the current level TS of water-heater water tank described in Real-time Obtaining; 3rd compares performance element 142 for being compared by the current level got TS and preset water level TSs, when described current level TS is lower than preset water level TSs, then performs described moisturizing directly-heated aqueous mode; When described current level TS is not less than preset water level TSs, the current water temperature T2 of water-heater water tank described in Real-time Obtaining.4th compares performance element 143 for being compared by the current water temperature got T2 and preset temperature T2s, when described current water temperature T2 is lower than preset temperature T2s, then performs described circulating-heating aqueous mode; When described current water temperature T2 is not less than preset temperature T2s, then controls described heater 1 and stop heating water.
Referring again to Fig. 1,7, further, Water heater pipeline antifreeze control system also comprises the 3rd Executive Module 150.
Described acquisition module 110 is also for obtaining water inlet temperature T3 and the outlet temperature T4 of described heater 1; Described comparison module 120 is also for importing and exporting water temperature T 3s by the water inlet got temperature T3 and outlet temperature T4 and compare with presetting; Described 3rd Executive Module 150 for when the minimum of a value in described water inlet temperature T3 and outlet temperature T4 is lower than default import and export water temperature T 3s, then controls the work of described heater 1 and the water circulation in the water inlet pipe of described heater 1, described water heater, the outlet pipe 12 of described water heater and described water-heater water tank is flowed.
Need to further illustrate, described circulating-heating aqueous mode is: control the water circulation flowing in described heater 1, the water inlet pipe of described water heater, the outlet pipe 12 of described water heater and described water-heater water tank while controlling the 1 pair of water heating of described heater.
With reference to figure 1, described in Water heater pipeline antifreeze control system, the water inlet pipe of water heater comprises cold water water inlet 3 and circulation water inlet pipe 4, described cold water inlet 3 is serially connected with the first on-off valve 31 for control piper break-make, described circulation water inlet pipe 4 comprises the first bypass duct 41 and connected second bypass duct 42, described first bypass duct 41 is connected with described cold water inlet 3 and the water side of contiguous described first on-off valve 31, and described second bypass duct 42 connects described heater 1.And more detailed embodiment, please refer to the above-mentioned embodiment relevant to Fig. 1, repeat no more here.
Above-mentioned Water heater pipeline antifreeze control method and system, when environment temperature T1 is higher than default environment temperature, unit is selected to enter directly-heated water heating pattern or circulation water heating pattern according to water level TS, even if the water in circulation water inlet pipe remains static, because now environment temperature T1 is greater than the freezing temperature of water, the temperature of the water in pipeline is all greater than the freezing temperature of water, even if the water in part pipeline is in the risk that static cycle of states water inlet pipe does not have bursting by freezing yet.When environment temperature T1 is lower than default environment temperature, then control the circulating-heating aqueous mode that unit enters the water circulation flowing in the water inlet pipe and outlet pipe that can make water heater, the cold water inlet of water heater and circulation water inlet pipe have the water of flowing to pass through, using amount of hot water can be met, and pipeline do not have the risk of bursting by freezing equally.
Additionally provide a kind of water heater, it comprises above-mentioned Water heater pipeline antifreeze control system.
Water heater antifreezing type pipeline structure of the present invention is simple, easy to operate, is easy to produce; control method has multiple protective; instead of antifreeze heat tape mode in existing scheme, effectively reduce production cost and the security risk of Teat pump boiler, significantly improve production efficiency.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. a Water heater pipeline antifreeze control method, is characterized in that, described method comprises:
The water temperature of acquisition environment temperature, water-heater water tank and water level;
The described environment temperature got is compared with the default environment temperature of water heater;
When described environment temperature is lower than default environment temperature, then according to water temperature and the water level execution circulating-heating aqueous mode of described water-heater water tank.
2. Water heater pipeline antifreeze control method as claimed in claim 1, is characterized in that, described when described environment temperature is lower than default environment temperature, then comprise according to the water temperature of described water-heater water tank and the step of water level execution circulating-heating aqueous mode:
When described environment temperature is lower than default environment temperature, the current water temperature of water-heater water tank described in Real-time Obtaining;
The current water temperature got and preset temperature are compared, when described current water temperature is lower than preset temperature, then performs described circulating-heating aqueous mode; When described current water temperature is not less than preset temperature, the current level of water-heater water tank described in Real-time Obtaining;
The current level got and preset water level are compared, when described current level is lower than preset water level, then the inlet valve action controlling described water heater makes it from outer moisturizing; When described current level is not less than preset water level and described current water temperature is not less than preset temperature, then controls described heater stop and water is heated.
3. Water heater pipeline antifreeze control method as claimed in claim 1, also comprises after the described step described environment temperature got compared with the default environment temperature of water heater:
When described environment temperature is not less than default environment temperature, then perform moisturizing directly-heated aqueous mode or described circulating-heating aqueous mode according to the water level of described water-heater water tank and water temperature.
4. Water heater pipeline antifreeze control method as claimed in claim 3, it is characterized in that, described when described environment temperature is not less than default environment temperature, then comprise according to the water level of described water-heater water tank and the step of water temperature execution moisturizing directly-heated aqueous mode or described circulating-heating aqueous mode:
When described environment temperature is not less than default environment temperature, the current level of water-heater water tank described in Real-time Obtaining;
The current level got and preset water level are compared, when described current level is lower than preset water level, then performs described moisturizing directly-heated aqueous mode; When described current level is not less than preset water level, the current water temperature of water-heater water tank described in Real-time Obtaining;
The current water temperature got and preset temperature are compared, when described current water temperature is lower than preset temperature, then performs described circulating-heating aqueous mode; When described current water temperature is not less than preset temperature, then controls described heater stop and water is heated.
5. the Water heater pipeline antifreeze control method as described in any one of Claims 1-4, is characterized in that, also comprise:
Obtain water inlet temperature and the outlet temperature of described heater;
By the water inlet temperature got and outlet temperature and preset and import and export water temperature and compare;
When the minimum of a value in described water inlet temperature and outlet temperature is lower than default import and export water temperature, then controls described heater work and the water circulation in the water inlet pipe of described heater, described water heater, the outlet pipe of described water heater and described water-heater water tank is flowed.
6. the Water heater pipeline antifreeze control method as described in any one of Claims 1-4, described circulating-heating aqueous mode is: control described heat exchanger and to controlling the corresponding valve event of described water heater while water heating, the water circulation in the water inlet pipe of described heater, described water heater, the outlet pipe of described water heater and described water-heater water tank is flowed.
7. a Water heater pipeline antifreeze control system, is characterized in that, comprising:
Acquisition module, for obtaining environment temperature, the water temperature of water-heater water tank and water level;
Comparison module, for comparing the described environment temperature got with the default environment temperature of water heater;
First Executive Module, for when described environment temperature is lower than default environment temperature, then according to water temperature and the water level execution circulating-heating aqueous mode of described water-heater water tank.
8. Water heater pipeline antifreeze control system as claimed in claim 7, it is characterized in that, described first Executive Module comprises:
Water temperature acquiring unit, for when described environment temperature is lower than default environment temperature, the current water temperature of water-heater water tank described in Real-time Obtaining;
First compares performance element, for the current water temperature got and preset temperature being compared, when described current water temperature is lower than preset temperature, then performs described circulating-heating aqueous mode; When described current water temperature is not less than preset temperature, the current level of water-heater water tank described in Real-time Obtaining;
Second compares performance element, and for the current level got and preset water level being compared, when described current level is lower than preset water level, then the inlet valve action controlling described water heater makes it from outer moisturizing; When described current level is not less than preset water level and described current water temperature is not less than preset temperature, then controls described heater stop and water is heated.
9. Water heater pipeline antifreeze control system as claimed in claim 7, is characterized in that, also comprise:
Second Executive Module, for when described environment temperature is not less than default environment temperature, then performs moisturizing directly-heated aqueous mode or described circulating-heating aqueous mode according to the water level of described water-heater water tank and water temperature.
10. Water heater pipeline antifreeze control system as claimed in claim 9, it is characterized in that, described second Executive Module comprises:
Water level acquiring unit, for when described environment temperature is not less than default environment temperature, the current level of water-heater water tank described in Real-time Obtaining;
3rd compares performance element, for the current level got and preset water level being compared, when described current level is lower than preset water level, then performs described moisturizing directly-heated aqueous mode; When described current level is not less than preset water level, the current water temperature of water-heater water tank described in Real-time Obtaining;
4th compares performance element, for the current water temperature got and preset temperature being compared, when described current water temperature is lower than preset temperature, then performs described circulating-heating aqueous mode; When described current water temperature is not less than preset temperature, then controls described heater stop and water is heated.
11. Water heater pipeline antifreeze control systems as described in any one of claim 7 to 10, is characterized in that, also comprise the 3rd Executive Module, wherein,
Described acquisition module, also for obtaining water inlet temperature and the outlet temperature of described heater;
Described comparison module, also for by the water inlet got temperature and outlet temperature and preset and import and export water temperature and compare;
Described 3rd Executive Module, for when the less value in described water inlet temperature, outlet temperature is lower than default import and export water temperature, then controls described heater work and the water circulation in the water inlet pipe of described heater, described water heater, the outlet pipe of described water heater and described water-heater water tank is flowed.
12. Water heater pipeline antifreeze control systems as described in any one of claim 7 to 10, described circulating-heating aqueous mode is: control described heater to the water circulation flowing controlled while water heating in described heater, the water inlet pipe of described water heater, the outlet pipe of described water heater and described water-heater water tank.
13. Water heater pipeline antifreeze control systems as claimed in claim 12, the water inlet pipe of described water heater comprises cold water inlet and circulation water inlet pipe, described cold water inlet is serially connected with the first on-off valve for control piper break-make, described circulation water inlet pipe comprises the first bypass duct and connected second bypass duct, described first bypass duct is connected with described cold water inlet and the water side of contiguous described first on-off valve, and described second bypass duct connects described heater.
14. 1 kinds of water heaters, is characterized in that, comprise the Water heater pipeline antifreeze control system as described in any one of claim 7 to 13.
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| CN201310313665.3A CN104344567B (en) | 2013-07-24 | 2013-07-24 | Water heater pipeline anti-freezing control method and system and water heater |
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| CN108931084A (en) * | 2018-07-04 | 2018-12-04 | 珠海格力电器股份有限公司 | Freezing protection control device, heat pump unit and its antifreeze control method of heat pump unit |
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