CN105783270A - Water heater and water temperature control method of water heater - Google Patents
Water heater and water temperature control method of water heater Download PDFInfo
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- CN105783270A CN105783270A CN201410830152.4A CN201410830152A CN105783270A CN 105783270 A CN105783270 A CN 105783270A CN 201410830152 A CN201410830152 A CN 201410830152A CN 105783270 A CN105783270 A CN 105783270A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 468
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- 239000007788 liquid Substances 0.000 claims abstract description 12
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- 238000010586 diagram Methods 0.000 description 7
- 239000002826 coolant Substances 0.000 description 6
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- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 3
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Abstract
The invention discloses a water heater. The water heater comprises a compressor, a gas-liquid separator, a fin heat exchanger, a water side heat exchanger, a water inlet pipeline, a water outlet pipeline, a water outlet temperature sensor and an environment temperature sensor; and a water inlet quantity adjusting device is arranged on the water inlet pipeline, and is used for controlling a water inlet level of the water inlet pipeline. The water heater further comprises a frequency control device connected with the compressor and the water outlet temperature sensor; and the frequency control device is used for adjusting the operation frequency of the compressor. The invention further provides a water temperature control method of the water heater. The frequency output of the compressor is changed to adapt to the problem of unstable water heating efficiency under different environment temperatures in the heating process. The water inlet quantity is controlled to reduce the problem of unstable heating of a water heating system caused by unstable water flow; and the fast stable heating of the water heater is realized.
Description
Technical field
The present invention relates to hot water machine field, particularly relate to hot water machine and hot water machine temperature control method of water.
Background technology
Currently having increasing user to begin to use air energy thermal water machine, air energy thermal water machine is not only energy-conservation, and can use throughout the year.What general air energy thermal water machine used is all invariable frequency compressor.The output frequency of invariable frequency compressor is stable, namely the hot water power stability of air energy thermal water machine, but this stable hot water power be not properly suited for various temperature environment.When outdoor is low temperature environment, the heating efficiency of air energy unit there will be the problem significantly decayed, thus the leaving water temperature under causing low temperature environment does not reach the water temperature that user sets, reduces the comfort level that user uses.Meanwhile, the size of air energy thermal water machine flow of inlet water also influences whether stability and the efficiency of heating surface of air energy unit heat system.When the flow of inlet water of hot water machine is less than normal, then there will be leaving water temperature too high or cause air energy machine set system high voltage fault；And when the flow of inlet water of hot water machine is bigger than normal, then there will be leaving water temperature too low thus reducing the comfort level that user uses.Affected by the various factors such as ambient temperature, flow of inlet water, heats that air energy thermal water machine can not remain stable for completely in heating process and efficiency, thus having influence on the water demand of user and the comfort level of use.
Summary of the invention
A kind of hot water machine of offer and hot water machine temperature control method of water are provided, it is intended to the running frequency by controlling compressor in hot water machine and inflow, reach the purpose of lifting hot water stability in heating process and the efficiency of heating surface, improve the satisfaction that user uses.
For achieving the above object, the present invention provides a kind of hot water machine, including compressor, gas-liquid separator, finned heat exchanger, water-side heat, inlet pipeline, outlet pipeline, environment temperature sensor, leaving water temperature sensors, described hot water machine also includes: water inlet quantity regulating device and frequency control apparatus；Wherein,
Described water inlet quantity regulating device is arranged on described inlet pipeline and is connected with described environment temperature sensor, the temperature range at the ambient temperature place for detecting according to described environment temperature sensor, controls the water inlet gear of described inlet pipeline；
Described frequency control apparatus is connected with described compressor, described environment temperature sensor, described leaving water temperature sensors, and described frequency control apparatus is respectively arranged with the mapping relations table of ambient temperature and the initial launch frequency of compressor for each described temperature range；Described frequency control apparatus arranges the initial launch frequency of described compressor for the ambient temperature detected according to described environment temperature sensor and described mapping relations table, and for according to leaving water temperature, hot water machine preset temperature and compressor current operation frequency, regulating described compressor operating frequency.
Present invention also offers a kind of hot water machine temperature control method of water, described hot water machine includes compressor, gas-liquid separator, finned heat exchanger, water-side heat, inlet pipeline, outlet pipeline, environment temperature sensor, leaving water temperature sensors, and described hot water machine temperature control method of water includes:
Obtain the ambient temperature that described environment temperature sensor detects；
Temperature range according to the ambient temperature place that described environment temperature sensor detects, controls the water inlet gear of described inlet pipeline；
The ambient temperature that detects according to described environment temperature sensor and the ambient temperature preset respectively for each described temperature range and the mapping relations table of the initial launch frequency of compressor, set the initial launch frequency of described compressor；
According to obtain described leaving water temperature sensors detect leaving water temperature value, described hot water machine preset temperature value and described compressor current operation frequency, regulate described compressor operating frequency.
Implement hot water machine provided by the invention and hot water machine temperature control method of water has the advantages that
(1) present invention controls the water inlet gear of described inlet pipeline according to the temperature range at ambient temperature place so that the hot water amount of hot water machine does adaptive adjustment along with the change of ambient temperature；And, under same temperature interval, in compressor operating process, relation is regulated according to the frequency that its running frequency is corresponding with water temperature change, have only to the running frequency dynamically adjusting compressor without adjusting inflow, to solve that flow of inlet water in different temperature ranges and heating process is unstable and the heating instability problem that brings；
(2) owing to the present invention being respectively arranged with the mapping relations table of ambient temperature and initial launch frequency in advance for each described temperature range, and this each temperature range and water inlet gear are mutually adapted, inflow is combined by the process setting initial launch frequency with concrete ambient temperature, realize the compressor optimum initial launch frequency at varying environment temperature and inflow, make hot water machine initially can provide the hot water of suitable water temperature quickly, be conducive to improving Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is hot water machine basic structure exemplary plot of the present invention；
Fig. 2 is the functional block diagram of frequency control apparatus first embodiment of the present invention；
Fig. 3 is the functional block diagram of frequency control apparatus the second embodiment of the present invention；
Fig. 4 is the functional block diagram of frequency control apparatus the 3rd embodiment medium frequency adjustment module of the present invention；
Fig. 5 is hot water machine temperature control method of water first embodiment schematic flow sheet of the present invention；
Fig. 6 is hot water machine temperature control method of water of the present invention second embodiment schematic flow sheet；
Fig. 7 is hot water machine temperature control method of water the 3rd embodiment schematic flow sheet of the present invention；
Fig. 8 is hot water machine temperature control method of water the 4th embodiment schematic flow sheet of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
Illustrate that the concrete structure to the present invention and methods && steps of implementation illustrate below according to accompanying drawing.Specifically illustrate with air energy thermal water machine in the present embodiment.
It is hot water machine basic structure exemplary plot of the present invention with reference to Fig. 1, Fig. 1.Described hot water machine includes compressor 1, gas-liquid separator 2, finned heat exchanger 3, electric expansion valve 4, cross valve 5 and water-side heat 6.One end of described compressor 1 connects with described water-side heat 6 through cross valve 5, and the other end of described compressor 1 is by gas-liquid separator 2 and connects with described finned heat exchanger 3 through cross valve 5.Described finned heat exchanger 3 is connected with described water-side heat 6 by described electric expansion valve 4.Described compressor 1 is frequency-changeable compressor.Compressor 1, gas-liquid separator 2, finned heat exchanger 3, electric expansion valve 4, cross valve 5 and water-side heat 6 constitute the closed circuit of coolant media in heater, and described coolant media is the one in cold-producing medium, are cryogenic liquid under room temperature.In the closed circuit of this coolant media, coolant media becomes the gas liquid mixture with certain heat after absorbing the heat in outside air by finned heat exchanger 3, the gas after gas-liquid separator 2 is partially in compressor 1.Effect through compressor 1 becomes the gas of High Temperature High Pressure, enters water-side heat 6 then through cross valve 5, discharges heat, thus being hot water by cool water heating in water-side heat 6.Finally enter in finned heat exchanger 3 then through electric expansion valve 4 and enter next circulation.
The present embodiment hot water machine also includes the second electromagnetic valve 8, leaving water temperature sensors 9, inlet pipeline 10, outlet pipeline 11, environment temperature sensor 12, and is located at the water inlet quantity regulating device 16 on described hot water machine inlet pipeline 10.This water inlet quantity regulating device 16 includes the first electromagnetic valve 13 and check valve 14 and the inflow regulable control device 15 being connected with described first electromagnetic valve 13, and this inflow regulable control device 15 electrically connects with environment temperature sensor 12 and the first electromagnetic valve 13 respectively.The temperature range at the described water inlet quantity regulating device 16 ambient temperature place for detecting according to described environment temperature sensor 12, and the water inlet gear of described inlet pipeline 10 is controlled by inflow regulable control device 15.In the present invention, electromagnetic valve and the quantity of check valve, electromagnetic valve that water inlet quantity regulating device includes can be arranged according to actual needs with check valve interconnected relationship etc., and are not limited to the exemplary forms in the present embodiment.
Described leaving water temperature sensors 9 is positioned on described outlet pipeline 11, and described second electromagnetic valve 8 is positioned on inlet pipeline 10.Described leaving water temperature sensors 9 is for gathering the leaving water temperature value of hot water.Described second electromagnetic valve 8 is for controlling the inflow in inlet pipeline 10.Wherein, the first electromagnetic valve 13 is in parallel with check valve 14, and connects with the second electromagnetic valve 8 respectively after the first electromagnetic valve 13 and check valve 14 parallel connection again.First electromagnetic valve 13 and the second electromagnetic valve 8 define a branch road of hot water machine cold water water inlet, and the second electromagnetic valve 8 and check valve 14 define another branch road of hot water machine cold water water inlet.By described two the hot water machine cold water water inlet branch road arranged, it is possible to when keeping water velocity constant, further increase the inflow in the unit interval, also improve hot water machine thermal-stable and the efficiency of heating surface further simultaneously.Wherein, the first electromagnetic valve 13 be turned on and off carry out regulable control by inflow regulable control device 15.
Such as, when hot water machine ambient temperature is more than 20 DEG C, now the heats of hot water machine is best, such that it is able to heat more cold water, therefore, the ambient temperature that inflow regulable control device 15 detects according to described environment temperature sensor 12, open the first electromagnetic valve 13, thus strengthening inflow.And when hot water machine ambient temperature is less than 20 DEG C, then inflow regulable control device 15 cuts out the first electromagnetic valve 13.Described ambient temperature can set according to the actual heats amendment of hot water machine, and is not constant.The present embodiment is preferably 20 DEG C.Or be, such as, when described compressor operating frequency is lower than 60 hertz, and during continuous service more than 30 minutes, hot water machine also can while ensureing user's water demand, can reheating more cold water, therefore, inflow regulable control device 15 can also open the first electromagnetic valve 13 according to this feature.It is not limited to compressor operating frequency in the present embodiment lower than 60 hertz, and the first electromagnetic valve 13 is just opened in continuous service this requirement in more than 30 minutes, determines with specific reference to the actual heating state of hot water machine.
In the present embodiment, water-side heat the 6, second electromagnetic valve 8, inlet pipeline 10, outlet pipeline the 11, first electromagnetic valve 13 and check valve 14 constitute the water inlet of hot water machine and go out water loop.According to ambient temperature, cold water can respectively enter the first electromagnetic valve 13 and check valve 14 from inlet pipeline 10 through the second electromagnetic valve 8, or only enter check valve 14, finally enter back into after water-side heat 6 is heated to be hot water, flow out then through outlet pipeline 11.
Additionally, the present embodiment hot water machine also includes environment temperature sensor 12 and frequency control apparatus 7.Described environment temperature sensor 12 is positioned at the outside of described finned heat exchanger 3.The described frequency control apparatus 7 ambient temperature for monitoring according to environment temperature sensor 12, the initial launch frequency of preset compressor 1.
Varying environment temperature suffers from direct impact for heating efficiency and the efficiency of hot water machine, especially for air energy heater, at low ambient temperatures, the heating efficiency of air energy heater is it would appear that significantly decay, heating efficiency declines, hot-water heating system also can become unstable simultaneously, thus affecting the efficiency of heating.Therefore, frequency control apparatus 7 is respectively arranged with the mapping relations table of ambient temperature and the initial launch frequency of compressor for each described temperature range.By the compressor operating frequency at default varying environment temperature to reduce the ambient temperature impact for hot water machine.
With reference to table 1, table 1 is the mapping relations table of ambient temperature Th and the initial launch frequency of compressor, and in the table ,-10 DEG C-20 DEG C is a temperature range, and 20 DEG C-40 DEG C is another temperature range.
Table 1
| Th(℃) | Frequency initial value (hertz) | Th(℃) | Frequency initial value (hertz) |
| Th <-10 | 90 | 15 < Th≤20 | 45 |
| -10≤Th <-5 | 80 | 20 < Th≤25 | 70 |
| -5≤Th < 0 | 70 | 25 < Th≤30 | 65 |
| Th≤0 | 65 | 30 < Th≤35 | 60 |
| 0 < Th≤5 | 60 | 35 < Th≤40 | 55 |
| 5 < Th≤10 | 55 | 40 < Th | 50 |
| 10 < Th≤15 | 50 | —— | —— |
In upper table, the corresponding relation between Th and compressor operating frequency initial value is to calculate, according to hot water machine real work situation, the optimum corresponding relation drawn, and is not that unique restriction is constant.
Meanwhile, described frequency control apparatus 7 is additionally operable to the regulated value of default compressor 1 running frequency, the running frequency of compressor 1 described in regulable control according to the mapping relations between leaving water temperature, hot water machine preset temperature and compressor 1 current operation frequency.When mapping relations between described leaving water temperature, hot water machine preset temperature and compressor 1 current operation frequency are embodied in current operation frequency (such as frequency range is 30HZ～150HZ) within the specific limits of compressor 1, according to hot water effluent's temperature value that leaving water temperature sensors 9 monitors, and the difference between the temperature value that hot water machine is preset (namely user needs the temperature value of heating), regulates the running frequency of compressor 1.Described frequency control apparatus 7 connects with compressor 1, leaving water temperature sensors 9 and environment temperature sensor 12.
In the present embodiment, described coolant media absorbs the heat energy in extraneous air by finned heat exchanger 3, and through the compressor 1 gas by coolant media boil down to High Temperature High Pressure, described high temperature and high pressure gas transfers thermal energy to cold water through water-side heat 6, thus being hot water by cool water heating.Simultaneously, frequency control apparatus 7 is by being arranged at the leaving water temperature sensors 9 on hot water effluent's pipeline 11, obtain leaving water temperature actual value, it is thus possible to according to the difference between leaving water temperature actual value and water outlet temperature setting value, obtain the running frequency regulated value of corresponding compressor 1, thus the running frequency regulated value that frequency control apparatus 7 is according to the compressor 1 obtained, the running frequency of regulable control compressor 1, thus improving hot water machine thermal-stable in heating process and the efficiency of heating surface.Additionally, the present embodiment has the impact considering hot water machine inflow for hot water machine thermal-stable, present invention improves over the water inlet pattern of hot water machine.Two grades of discharges are formed by first electromagnetic valve the 13, second electromagnetic valve 8 and check valve 14, it is thus possible to more accurately control the size of inflow, under meeting the premise of water demand of user, reduce unstable due to inflow and on hot water machine thermal-stable impact.In the present embodiment the first electromagnetic valve be turned on and off be not limited to two above feature, it is also possible to be other heating features of hot water machine.Meanwhile, the inflow control model of hot water machine is also not limited to described two grades of discharges and annexation, specifically being actually needed depending on hot water machine.
Further, with reference to the functional block diagram that Fig. 2, Fig. 2 are frequency control apparatus first embodiment of the present invention, the frequency control apparatus of the present embodiment includes:
Ambient temperature acquisition module 10, after described compressor start, obtains the ambient temperature that described environment temperature sensor detects；
Memory module 20, for storing the mapping relations table of ambient temperature and the initial launch frequency being respectively provided with for each described temperature range；
Frequency initial value acquisition module 30, for the ambient temperature detected according to described environment temperature sensor, obtains the initial value of the compressor operating frequency corresponding with the ambient temperature that described environment temperature sensor detects preset；
Original frequency operation control module 40, for controlling the described compressor initial value continuous service Preset Time with described compressor operating frequency.
The external structure of finned heat exchanger 3 is provided with environment temperature sensor 12, the ambient temperature that ambient temperature acquisition module 10 is collected by environment temperature sensor 12, the ambient temperature that frequency initial value acquisition module 30 collects according to ambient temperature acquisition module 10 simultaneously, and the mapping relations table of the ambient temperature that in memory module 20, the different temperatures interval of storage is corresponding and initial launch frequency, obtain the initial value of the compressor operating frequency corresponding with the ambient temperature that described environment temperature sensor detects preset.When hot water machine unlatching (namely compressor 1 starts) is heated, hot water machine water inlet water temperature value generally all can be more much lower than the water temperature value that user sets, therefore, in order to reduce the frequent adjustment of compressor operating frequency, also further speed up the firing rate of hot water simultaneously.The present embodiment is preset an initial launch duration, and in this initial launch duration, original frequency operation control module 40 keeps the initial value of compressor operating frequency constant, thus hot water machine start heating time can within a short period of time by water temp. heating to higher temperature, then again water temperature is finely tuned.Described initial launch duration can be modified according to situations such as the actual heating state of hot water machine, water inlet water temperature value, and in the present embodiment, initial launch duration is preferably preset as 1 minute.
In the present embodiment, by pre-setting the compressor initial launch frequency at varying environment temperature, to reduce the ambient temperature impact for hot water machine.Meanwhile, for improving the firing rate of hot water machine further, presetting an initial launch duration, the initial value keeping compressor operating frequency is constant in this initial launch duration.Initial launch duration during by the compressor initial launch frequency values pre-set above and compressor start so that hot water machine can adapt to different ambient temperatures and keeps good heating efficiency and the efficiency of heating surface.
Further, with reference to the functional block diagram that Fig. 3, Fig. 3 are frequency control apparatus the second embodiment of the present invention, based on the invention described above frequency control apparatus first embodiment, the frequency control apparatus of the present embodiment also includes:
Water temperature acquisition module 50, for obtaining the leaving water temperature value in the current preset unit interval；
For dynamically controlling the leaving water temperature of hot water machine better, the present embodiment has been preset the unit interval, the interval time that the described unit interval also regulates for compressor operating frequency, this unit interval can modify according to the practical situation of hot water machine heating, is preferably arranged to 40 seconds in the present embodiment.At interval of a unit interval (40 seconds), the leaving water temperature sensors that water temperature acquisition module 50 will pass through to be arranged on hot water machine hot water effluent's pipeline obtains the hot water effluent's temperature value in the current one time.In the present embodiment, the leaving water temperature value in the described unit interval can be leaving water temperature value corresponding at the beginning of the unit interval, it is also possible to be the meansigma methods of leaving water temperature in the whole unit interval, or is the leaving water temperature value answered of unit interval foot couple.As long as the calculation of the leaving water temperature value that unit time is corresponding is unanimously.
Judge module 60, is used for the difference judging described leaving water temperature value and default leaving water temperature value whether in default temperature range；
According to the described leaving water temperature value that water temperature acquisition module 50 gets, it is judged that module 60 judges that the difference of described leaving water temperature value and default leaving water temperature value is whether in default temperature range.If difference is in default temperature range, illustrates that actual hot water effluent's temperature meets the hot water temperature of user's request, then leaving water temperature need not be controlled.Otherwise need leaving water temperature is controlled.Described default leaving water temperature value is demand hot water temperature's value that user pre-sets before hot water machine begins to warm up.Described default temperature range can be revised, for instance when the temperature difference is disposed greater than in-1 DEG C and scope less than 1 DEG C, if user can accept, then need not adjust compressor operating frequency.
Frequency adjustment value acquisition module 70, for when described difference is not in default temperature range, then obtaining the regulated value of the described compressor operating frequency corresponding with described difference preset；
Judged result according to judge module 60, when the difference of described leaving water temperature value and default leaving water temperature value is not in default temperature range, namely illustrate that hot water effluent's temperature of reality does not meet the hot water temperature of user's request, accordingly, it would be desirable to the leaving water temperature of hot water machine is controlled.In the present embodiment, frequency adjustment value acquisition module 70 obtains the compressor preset operating frequency regulated value that described difference is corresponding, to change the running frequency of compressor.The more high then rotating speed of the frequency of compressor is more high, then compressor work is more big, namely the heating efficiency of hot water machine increases, otherwise, the more low then rotating speed of the frequency of compressor is more low, then compressor work is more little, namely the heating efficiency of hot water machine reduces, thus finally realizing the purpose that leaving water temperature is controlled.
With reference to table 2, table 2 is leaving water temperature actual value (TGo out) and water outlet temperature setting value (TIf) difference △ X and compressor operating frequency adjustment value between mapping table, wherein △ X=TGo out-TIf。
Table 2
In upper table, the corresponding relation between △ X and compressor operating frequency adjustment value is to calculate, according to hot water machine real work situation, the optimum corresponding relation drawn, and is not that unique restriction is constant.
Frequency adjustment module 80, for the regulated value according to described compressor operating frequency, regulates described compressor running frequency within the next described unit interval.
According to compressor operating frequency adjustment value corresponding to described difference that frequency adjustment value acquisition module 70 obtains, frequency adjustment module 80 regulates compressor current operation frequency, to form the running frequency at next unit interval inner compressor, thus realizing hot water machine water temperature is controlled.
In the present embodiment, water temperature acquisition module 50 obtains the actual leaving water temperature value in the unit interval, judge module 60 judges the difference between actual leaving water temperature value and the leaving water temperature value of setting, frequency adjustment value acquisition module 70 obtains corresponding compressor operating frequency adjustment value according to difference, last frequency adjustment module 80, further according to the compressor operating frequency adjustment value obtained, regulates compressor running frequency within the next unit interval.Adding thermally labile and the not high problem of the efficiency of heating surface by dynamically regulating the running frequency of compressor to solve hot water machine, lifting hot water adapts to the hot water ability at varying environment temperature, meets the hot water demand of user.
Further, with reference to the functional block diagram that Fig. 4, Fig. 4 are frequency control apparatus the 3rd embodiment of the present invention, based on the functional block diagram of frequency control apparatus the second embodiment of the present invention, the frequency adjustment module 80 of the present embodiment includes:
Frequency turns down unit 801, for when described difference not in default temperature range and the temperature value that detects of described leaving water temperature sensors preset more than described hot water machine temperature value time, then turn down current compressor running frequency according to the described compressor operating frequency adjustment value preset；
When described difference not in default temperature range and the temperature value that detects of described leaving water temperature sensors preset more than described hot water machine temperature value time, namely the leaving water temperature actual value of hot water machine is more than water outlet temperature setting value, now illustrate that compressor work is excessive, namely the running frequency of compressor is too high, therefore, for reducing the leaving water temperature of hot water machine, frequency is turned down unit 801 and is turned down the running frequency value of current compressor according to the preset operating frequency regulated value of described compressor, and then make the leaving water temperature value that the leaving water temperature value of hot water machine sets within the next unit interval closer to user.
Frequency heightens unit 802, for when described difference not in default temperature range and the temperature value that detects of described leaving water temperature sensors preset less than described hot water machine temperature value time, then heighten current compressor running frequency according to the described compressor operating frequency adjustment value preset.
When described difference not in default temperature range and the temperature value that detects of described leaving water temperature sensors preset less than described hot water machine temperature value time, namely the leaving water temperature actual value of hot water machine is less than water outlet temperature setting value, now illustrate that compressor work is too small, namely the running frequency of compressor is too low, therefore, for improving the leaving water temperature of hot water machine, frequency is heightened unit 802 and is heightened the running frequency value of current compressor according to the preset operating frequency regulated value of described compressor, and then make the leaving water temperature value that the leaving water temperature value of hot water machine sets within the next unit interval closer to user.
In the present embodiment, according to the compressor operating frequency adjustment value that the difference between the leaving water temperature actual value of hot water machine and the water outlet temperature setting value of hot water machine is corresponding, the corresponding running frequency regulating compressor.When described difference not in default temperature range and the temperature value that detects of described leaving water temperature sensors preset more than described hot water machine temperature value time, frequency is turned down unit 801 and is then turned down the running frequency value of current compressor according to the preset operating frequency regulated value of described compressor；When described difference not in default temperature range and the temperature value that detects of described leaving water temperature sensors preset less than described hot water machine temperature value time, frequency is heightened unit 802 and is then heightened the running frequency value of current compressor according to the preset operating frequency regulated value of described compressor.
With reference to Fig. 5, Fig. 5 is hot water machine temperature control method of water first embodiment schematic flow sheet of the present invention, in the present embodiment, described hot water machine includes compressor, gas-liquid separator, finned heat exchanger, water-side heat, inlet pipeline, outlet pipeline, environment temperature sensor, leaving water temperature sensors, and described hot water machine temperature control method of water includes:
Step S10, obtains the ambient temperature that described environment temperature sensor detects；
The temperature value of external environment condition is obtained by environment temperature sensor.
Step S20, the temperature range according to the ambient temperature place that described environment temperature sensor detects, control the water inlet gear of described inlet pipeline；
The change of ambient temperature will influence whether the heats of hot water machine.When ambient temperature is more than a certain temperature value, the efficiency of heating surface of hot water machine also will promote to some extent, therefore, it can suitably increase the inflow of hot water machine, improve the efficiency of heating surface.When the present embodiment is preferably ambient temperature more than 20 degrees Celsius, expand the inflow of inlet pipeline.
Step S30, the ambient temperature detected according to described environment temperature sensor and the ambient temperature preset respectively for each described temperature range and the mapping relations table of the initial launch frequency of compressor, set the initial launch frequency of described compressor；
Varying environment temperature suffers from direct impact for heating efficiency and the efficiency of hot water machine, especially for air energy heater, at low ambient temperatures, the heating efficiency of air energy heater is it would appear that significantly decay, heating efficiency declines, hot-water heating system also can become unstable simultaneously, thus affecting the efficiency of heating.Therefore, the ambient temperature impact for hot water machine can be reduced by the mapping relations table preset compressor initial launch frequency corresponding in conjunction with varying environment temperature and this ambient temperature place temperature range.
Step S40, according to obtain described leaving water temperature sensors detect leaving water temperature value, described hot water machine preset temperature value and described compressor current operation frequency, regulate described compressor operating frequency.
Hot water machine heating process is not a uniform heating process, can be subject to the impact of various factors in its heating process, thus having influence on effect and the efficiency of heating.For reducing the extraneous factor impact for heating process better, the present embodiment realizes the control to hot water machine water temperature by regulating the running frequency of compressor.The more high then rotating speed of the frequency of compressor is more high, then compressor work is more big, namely the heating efficiency of hot water machine increases, otherwise, the more low then rotating speed of the frequency of compressor is more low, then compressor work is more little, namely the heating efficiency of hot water machine reduces, thus finally realizing the purpose that leaving water temperature is controlled.
In the present embodiment, inflow is controlled by obtaining ambient temperature place temperature range, to adapt to hot water machine hot water ability under corresponding ambient temperature, and, selected and the mapping relations table of this ambient temperature place temperature range by the ambient temperature detected, and the initial launch frequency of preset compressor is carried out in conjunction with this mapping relations table and concrete ambient temperature, realize the compressor optimum initial launch frequency at varying environment temperature and inflow so that water temperature reaches comparatively to be suitable for and relatively stable value quickly.In addition, in the present embodiment, by obtain described leaving water temperature sensors detect leaving water temperature value, described hot water machine preset temperature value and described compressor current operation frequency, regulate the running frequency of compressor, realize the effective control to water temperature with this, improve heats and the efficiency of hot water machine further.
Further, being hot water machine temperature control method of water of the present invention second embodiment schematic flow sheet with reference to Fig. 6, Fig. 6, based on the invention described above hot water machine temperature control method of water first embodiment, in the present embodiment, step S40 includes:
Step S401, obtains the leaving water temperature value in the current preset unit interval；
For dynamically controlling the leaving water temperature of hot water machine better, the present embodiment has been preset the unit interval, the interval time that the described unit interval also regulates for compressor operating frequency, this unit interval can modify according to the practical situation of hot water machine heating, is preferably arranged to 40 seconds in the present embodiment.At interval of a unit interval (40 seconds), obtain the hot water effluent's temperature value in the current one time by the leaving water temperature sensors being arranged on hot water machine hot water effluent's pipeline.In the present embodiment, the leaving water temperature value in the described unit interval can be leaving water temperature value corresponding at the beginning of the unit interval, it is also possible to be the meansigma methods of leaving water temperature in the whole unit interval, or is the leaving water temperature value answered of unit interval foot couple.As long as the calculation of the leaving water temperature value that unit time is corresponding is unanimously.
Step S402, it is judged that whether the difference of described leaving water temperature value and default leaving water temperature value is in default temperature range；
According to the described leaving water temperature value got in step S401, it is judged that whether the difference of described leaving water temperature value and default leaving water temperature value is in default temperature range.If difference is in default temperature range, illustrates that actual hot water effluent's temperature meets the hot water temperature of user's request, then leaving water temperature need not be controlled.Otherwise need leaving water temperature is controlled.Described default leaving water temperature value is demand hot water temperature's value that user pre-sets before hot water machine begins to warm up.Described default temperature range can be revised, for instance when the temperature difference is disposed greater than in-1 DEG C and scope less than 1 DEG C, user can accept, then need not adjust compressor operating frequency.
Step S403, when described difference is not in default temperature range, then obtains the regulated value of the described compressor operating frequency corresponding with described difference preset；
Judged result according to step S402, when the difference of described leaving water temperature value and default leaving water temperature value is not in default temperature range, namely illustrate that hot water effluent's temperature of reality does not meet the hot water temperature of user's request, accordingly, it would be desirable to the leaving water temperature of hot water machine is controlled.In the present embodiment, obtain the compressor preset operating frequency regulated value that described difference is corresponding, to change the running frequency of compressor.The more high then rotating speed of the frequency of compressor is more high, then compressor work is more big, namely the heating efficiency of hot water machine increases, otherwise, the more low then rotating speed of the frequency of compressor is more low, then compressor work is more little, namely the heating efficiency of hot water machine reduces, thus finally realizing the purpose that leaving water temperature is controlled.
Step S404, the regulated value according to described compressor operating frequency, regulate described compressor running frequency within the next described unit interval.
According to the compressor operating frequency adjustment value that the described difference obtained in step S403 is corresponding, regulate compressor current operation frequency, to form the running frequency at next unit interval inner compressor.Such as, the compressor frequency that △ X is corresponding in-5 DEG C and current one time is 50 hertz, then corresponding look-up table 1, obtain compressor frequency regulated value corresponding when △ X is-5 DEG C and be+8 hertz, therefore, the running frequency at next unit interval inner compressor is 58 hertz (58 hertz=50 hertz+8 hertz).Such as, the compressor frequency that △ X is corresponding in 2 DEG C and current one time is 60 hertz, then corresponding look-up table 1, obtain compressor frequency regulated value corresponding when △ X is 2 DEG C and be-3 hertz, therefore, the running frequency at next unit interval inner compressor is 57 hertz (57 hertz=60 hertz-3 hertz).
In the present embodiment, for realizing better controlling water temperature this purpose, the present invention pre-sets corresponding optimum compressor initial launch frequency at varying environment temperature and corresponding optimum compressor operating frequency adjustment value under different water temperature situation of change.By obtaining the actual leaving water temperature value of unit interval Mo, judge the difference between actual leaving water temperature value and the leaving water temperature value of setting, and obtain corresponding compressor operating frequency adjustment value according to difference, last further according to the compressor operating frequency adjustment value obtained, regulate compressor running frequency within the next unit interval.Adding thermally labile and the not high problem of the efficiency of heating surface by dynamically regulating the running frequency of compressor to solve hot water machine, lifting hot water adapts to the hot water ability at varying environment temperature, meets the hot water demand of user.
Further, being hot water machine temperature control method of water the 3rd embodiment schematic flow sheet of the present invention with reference to Fig. 7, Fig. 7, based on the invention described above hot water machine temperature control method of water the second embodiment, the hot water machine temperature control method of water of the present embodiment includes at above-mentioned steps S404:
Step S4041, when described difference not in default temperature range and the temperature value that detects of described leaving water temperature sensors preset more than described hot water machine temperature value time, then turn down current compressor running frequency according to the described compressor operating frequency adjustment value preset；
When described difference is more than zero, namely the leaving water temperature actual value of hot water machine is more than water outlet temperature setting value, now illustrate that compressor work is excessive, namely the running frequency of compressor is too high, therefore, for reducing the leaving water temperature of hot water machine, it is necessary to turn down the running frequency value of current compressor according to the preset operating frequency regulated value of described compressor, and then make the leaving water temperature value that the leaving water temperature value of hot water machine sets closer to user within the next unit interval.
Step S4042, when described difference not in default temperature range and the temperature value that detects of described leaving water temperature sensors preset less than described hot water machine temperature value time, then heighten current compressor running frequency according to the described compressor operating frequency adjustment value preset.
When described difference is less than zero, namely the leaving water temperature actual value of hot water machine is less than water outlet temperature setting value, now illustrate that compressor work is too small, namely the running frequency of compressor is too low, therefore, for improving the leaving water temperature of hot water machine, it is necessary to heighten the running frequency value of current compressor according to the preset operating frequency regulated value of described compressor, and then make the leaving water temperature value that the leaving water temperature value of hot water machine sets closer to user within the next unit interval.
In the present embodiment, according to the compressor operating frequency adjustment value that the difference between the leaving water temperature actual value of hot water machine and the water outlet temperature setting value of hot water machine is corresponding, the corresponding running frequency regulating compressor.When described difference is more than zero, then turn down the running frequency value of current compressor according to the preset operating frequency regulated value of described compressor；When stating difference less than zero, then heighten the running frequency value of current compressor according to the preset operating frequency regulated value of described compressor.
Further, with reference to Fig. 8, Fig. 8 is hot water machine temperature control method of water the 4th embodiment schematic flow sheet of the present invention, and based on the invention described above hot water machine temperature control method of water the 3rd embodiment, the hot water machine temperature control method of water of the present embodiment included before above-mentioned steps S401:
Step S4001, obtains the ambient temperature that described environment temperature sensor detects；
Step S4002, according to the ambient temperature that described environment temperature sensor detects, obtains the initial value of the compressor operating frequency corresponding with the ambient temperature that described environment temperature sensor detects preset in corresponding described mapping relations table；
Step S4003, controls the described compressor initial value continuous service Preset Time with described compressor operating frequency.
Varying environment temperature suffers from direct impact for heating efficiency and the efficiency of hot water machine, especially for air energy heater, at low ambient temperatures, the heating efficiency of air energy heater is it would appear that significantly decay, heating efficiency declines, hot-water heating system also can become unstable simultaneously, thus affecting the efficiency of heating.Therefore, by the compressor operating frequency at default varying environment temperature to reduce the ambient temperature impact for hot water machine.
When hot water machine unlatching (namely compressor start) is heated, hot water machine water inlet water temperature value generally all can be more much lower than the water temperature value that user sets, therefore, in order to reduce the frequent adjustment of compressor operating frequency, also further speed up the firing rate of hot water simultaneously.The present embodiment is preset an initial launch duration, and in this initial launch duration, keep compressor operating frequency initial value constant, thus hot water machine start heating time can within a short period of time by water temp. heating to higher temperature, then again water temperature is finely tuned.Described initial launch duration can be modified according to situations such as the actual heating state of hot water machine, water inlet water temperature value, and in the present embodiment, initial launch duration is preferably preset as 1 minute.
In the present embodiment, by pre-setting the compressor initial launch frequency at varying environment temperature, to reduce the ambient temperature impact for hot water machine.Meanwhile, for improving the firing rate of hot water machine further, by presetting an initial launch duration, and keep the initial value of compressor operating frequency constant in this initial launch market.Initial launch duration during by the compressor initial launch frequency values pre-set above and compressor start so that hot water machine can adapt to different ambient temperatures and keeps good heating efficiency and the efficiency of heating surface.
Further, based on hot water machine temperature control method of water the 4th embodiment of the present invention, the hot water machine temperature control method of water of hot water machine temperature control method of water the 5th embodiment of the present invention also includes: according to described compressor operating frequency and continuous service Preset Time, control the water inlet gear of described inlet pipeline.
When described compressor operating frequency is lower than predeterminated frequency threshold value, and when continuing Preset Time, hot water function is while ensureing user's water demand, it is possible to reheat more cold water.Described Preset Time and predeterminated frequency threshold value can be modified according to the actual heating state of hot water machine.In the present embodiment, the preset threshold time is preferably 30 minutes, and the predeterminated frequency threshold value of compressor is preferably 60 hertz.Namely compressor operating frequency is within 60 hertz continuously, and when within maintenance 60 hertz, running frequency was more than 30 minutes, it is possible to suitably increase inflow.In the case, inflow is increased, it is possible to further make the efficiency of heating surface of hot water machine remain stable for.Such as hot water machine in Fig. 1, when described compressor operating frequency is lower than predeterminated frequency threshold value, and when continuing Preset Time, then open the first electromagnetic valve, thus defining the first electromagnetic valve and a water inlet branch road of the second electromagnetic valve composition, and another water inlet branch road of check valve and the second electromagnetic valve composition, thus defining two grades of water yields.
In the present embodiment, it is contemplated that hot water machine inflow, for the impact of hot water machine thermal-stable, present invention improves over the water inlet pattern of hot water machine.Actual heating state according to hot water machine, selectively turns on or closes a water inlet branch road, thus realizing the control to amount of inlet water.Form two grades of water yields by the first electromagnetic valve, the second electromagnetic valve and check valve such that it is able to more accurately control the size of inflow, under meeting the premise of water demand of user, reduce unstable due to inflow and on hot water machine thermal-stable impact.In the present embodiment, the inflow control model of hot water machine is not limited to described two grades of discharges and annexation thereof, both any one in numerous inflow control model can have been selected, by decision logic, all inflow control models can also be coupled together, and trigger corresponding inflow control model, specifically being actually needed depending on hot water machine by specified conditions.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the present invention and accompanying drawing content to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all in like manner include in the scope of patent protection of the present invention.
Claims (10)
1. a hot water machine, including compressor, gas-liquid separator, finned heat exchanger, water-side heat, inlet pipeline, outlet pipeline, environment temperature sensor, leaving water temperature sensors, it is characterized in that, described hot water machine also includes: water inlet quantity regulating device and frequency control apparatus；Wherein,
Described water inlet quantity regulating device is arranged on described inlet pipeline and is connected with described environment temperature sensor, the temperature range at the ambient temperature place for detecting according to described environment temperature sensor, controls the water inlet gear of described inlet pipeline；
Described frequency control apparatus is connected with described compressor, described environment temperature sensor, described leaving water temperature sensors, and described frequency control apparatus is respectively arranged with the mapping relations table of ambient temperature and the initial launch frequency of compressor for each described temperature range；Described frequency control apparatus arranges the initial launch frequency of described compressor for the ambient temperature detected according to described environment temperature sensor and described mapping relations table, and for according to leaving water temperature, hot water machine preset temperature and compressor current operation frequency, regulating described compressor operating frequency.
2. hot water machine as claimed in claim 1, it is characterised in that described frequency control apparatus includes:
Ambient temperature acquisition module, after described compressor start, obtains the ambient temperature that described environment temperature sensor detects；
Memory module, for storing the mapping relations table of ambient temperature and the initial launch frequency being respectively provided with for each described temperature range；
Frequency initial value acquisition module, for the ambient temperature detected according to described environment temperature sensor, corresponding described mapping relations table obtains the initial value of the compressor operating frequency corresponding with the ambient temperature that described environment temperature sensor detects preset；
Original frequency operation control module, for controlling the described compressor initial value continuous service Preset Time with described compressor operating frequency.
3. hot water machine as claimed in claim 1 or 2, it is characterised in that described frequency control apparatus also includes:
Water temperature acquisition module, for obtaining the leaving water temperature value in the current preset unit interval；
Judge module, is used for the difference judging described leaving water temperature value and default leaving water temperature value whether in default temperature range；
Frequency adjustment value acquisition module, for when described difference is not in default temperature range, then obtaining the regulated value of the described compressor operating frequency corresponding with described difference preset；
Frequency adjustment module, for the regulated value according to described compressor operating frequency, regulates described compressor running frequency within the next described unit interval.
4. hot water machine as claimed in claim 3, it is characterised in that described frequency adjustment module includes:
Frequency turns down unit, for when described difference not in default temperature range and the temperature value that detects of described leaving water temperature sensors preset more than described hot water machine temperature value time, then turn down current compressor running frequency according to the described compressor operating frequency adjustment value preset；
Frequency heightens unit, for when described difference not in default temperature range and the temperature value that detects of described leaving water temperature sensors preset less than described hot water machine temperature value time, then heighten current compressor running frequency according to the described compressor operating frequency adjustment value preset.
5. hot water machine as claimed in claim 4, it is characterized in that, described water inlet quantity regulating device includes inflow regulable control device, be arranged on described inlet channel the first electromagnetic valve and the check valve in parallel with described electromagnetic valve, described inflow regulable control device electrically connects with described environment temperature sensor and described first electromagnetic valve respectively.
6. a hot water machine temperature control method of water, it is characterized in that, described hot water machine includes compressor, gas-liquid separator, finned heat exchanger, water-side heat, inlet pipeline, outlet pipeline, environment temperature sensor, leaving water temperature sensors, and described hot water machine temperature control method of water includes:
Obtain the ambient temperature that described environment temperature sensor detects；
Temperature range according to the ambient temperature place that described environment temperature sensor detects, controls the water inlet gear of described inlet pipeline；
The ambient temperature that detects according to described environment temperature sensor and the ambient temperature preset respectively for each described temperature range and the mapping relations table of the initial launch frequency of compressor, set the initial launch frequency of described compressor；
According to obtain described leaving water temperature sensors detect leaving water temperature value, described hot water machine preset temperature value and described compressor current operation frequency, regulate described compressor operating frequency.
7. hot water machine temperature control method of water as claimed in claim 6, it is characterized in that, described according to obtain described leaving water temperature sensors detect leaving water temperature value, described hot water machine preset temperature value and described compressor current operation frequency, the step regulating described compressor operating frequency includes:
Obtain the leaving water temperature value in the current preset unit interval；
Judge that the difference of the leaving water temperature value in the described current preset unit interval and default leaving water temperature value is whether in default temperature range；
When described difference is not in default temperature range, then obtain the regulated value of the described compressor operating frequency corresponding with described difference preset；
Regulated value according to described compressor operating frequency, regulates described compressor running frequency within the next described unit interval.
8. hot water machine temperature control method of water as claimed in claim 7, it is characterised in that the described regulated value according to described compressor operating frequency, regulates described compressor running frequency within the next described unit interval and includes:
When described difference not in default temperature range and the temperature value that detects of described leaving water temperature sensors preset more than described hot water machine temperature value time, then turn down current compressor running frequency according to the described compressor operating frequency adjustment value preset；
When described difference not in default temperature range and the temperature value that detects of described leaving water temperature sensors preset less than described hot water machine temperature value time, then heighten current compressor running frequency according to the described compressor operating frequency adjustment value preset.
9. hot water machine temperature control method of water as claimed in claim 7 or 8, it is characterized in that, the mapping relations table of the described ambient temperature detected according to described environment temperature sensor and the ambient temperature preset respectively for each described temperature range and the initial launch frequency of compressor, the initial launch frequency setting described compressor includes:
Obtain the ambient temperature that described environment temperature sensor detects；
According to the ambient temperature that described environment temperature sensor detects, corresponding described mapping relations table obtains the initial value of the compressor operating frequency corresponding with the ambient temperature that described environment temperature sensor detects preset；
Control the described compressor initial value continuous service Preset Time with described compressor operating frequency.
10. hot water machine temperature control method of water as claimed in claim 9, it is characterised in that the temperature range at the described ambient temperature place detected according to described environment temperature sensor, the water inlet gear controlling described inlet pipeline replaces with:
According to described compressor operating frequency and continuous service Preset Time, control the water inlet gear of described inlet pipeline.
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