CN102759192B - Heat pump heating system and control device and method of auxiliary heating - Google Patents
Heat pump heating system and control device and method of auxiliary heating Download PDFInfo
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Abstract
The invention discloses a heat pump heating system and a control device and method of auxiliary heating. The heat pump heating system comprises a heat pump, a heat exchanger, an outflow pipeline, an auxiliary heating device and an auxiliary heating control device, wherein a condenser of the heat pump is arranged in the heat exchanger for heating a flow medium in the heat exchanger; the outflow pipeline is connected with the outlet of the heat exchanger; the auxiliary heating control device is used for determining the load rate of the heat pump, and controlling the starting and stopping of the auxiliary heating device of the heat pump according to the determined load rate; and the auxiliary heating device is used for heating the flow medium flowing through the outflow pipeline after stared. Because the auxiliary heating device of the heat pump is controlled according to the load rate of the heat pump, the auxiliary heating device is started for auxiliary heating when the load power is bigger, and thus heating can be carried out by fully utilizing heat of the heat pump, the auxiliary heating device is avoided being frequently started in a controlling process, and the aims of saving electric energy and saving energy and reducing consumption are achieved.
Description
Technical field
The present invention relates to energy conversion technology, particularly relate to control device and the control method of a kind of heat pump heating and auxiliary heating thereof.
Background technology
Heat pump is a kind of by the device of the heat energy transfer of low-temperature heat source to high temperature heat source.Heat pump obtains heat from low-temperature heat source (such as outdoor air or recirculated water), consume certain mechanical power, and supply higher heat to high temperature heat source (such as heating of house system), the relation between these heats meets the first law of thermodynamics.By the heat that heat pump assembly is supplied, than the heat be transformed into by mechanical power, or ratio electric energy directly heats high temperature heat source, and exports more heats.This more heat exported obtains from low-temperature heat source, therefore, uses heat pump assembly both can fuel saving, can utilize waste heat again, be applied in many occasions.
Heat pump hot-water system comprises heat pump main frame and heat exchanger two parts.Heat pump host machine part as shown in Figure 1, comprises evaporimeter, compressor, expansion valve and condenser; Wherein, condenser is arranged in heat exchanger, in order to the water in heating heat exchanger.Evaporimeter is arranged in low-temperature heat source, absorbs the heat in low-temperature heat source, by the certain energy of compressor consumption, thus discharges higher heat by condenser to the water in heat exchanger.The external circulating line of heat exchanger, is flowed into circulating line by the water that heats through the outlet of heat exchanger in heat exchanger and outwardly provides heat, as by indoor lay cycle pipeline to indoor heating.The water of circulating line, after outwardly releasing heat, recycles back heat exchanger with circulating line, and the water inlet through heat exchanger enters into heat exchanger and heated.
But if only heated by heat pump in some cases, the water outlet of possible heat exchanger cannot reach predetermined temperature, therefore, needs additional heat.Thus, be also provided with the assisted heating device of heat pump for heat pump, to make up the deficiency of heat pump energy.Assisted heating device can heat according to the water outlet of the leaving water temperature heat exchanger of heat exchanger, with the temperature making the water of circulating line reach predetermined.Particularly, when the lowest temperature angle value (such as 15 DEG C) of the leaving water temperature of heat exchanger lower than setting being detected, then start the water that assisted heating device heat exchanger outputs to circulating line and heat; When the lowest temperature angle value (such as 28 DEG C) of the leaving water temperature of heat exchanger higher than setting being detected, then stop assisted heating device.
In actual applications, the present inventor finds that the leaving water temperature of foundation heat exchanger is to control the start and stop of assisted heating device, often causes the unlatching of assisted heating device longer for running time, causes the waste of electric energy.
Summary of the invention
Embodiments provide control device and the control method of a kind of heat pump heating and auxiliary heating thereof, in order to more reasonably to control the start and stop of assisted heating device, avoid the unlatching of assisted heating device longer for running time, reach the object of more saving electric energy.
According to an aspect of the present invention, provide a kind of heat pump heating, comprising: heat pump, heat exchanger, outflow conduit, assisted heating device and auxiliary heating control device;
Wherein, the condenser of described heat pump is arranged in described heat exchanger, in order to heat the flow media in described heat exchanger;
Described outflow conduit is connected with the outlet of described heat exchanger, and the flow media in described heat exchanger flows into described outflow conduit through the outlet of described heat exchanger;
Described auxiliary heating control device, in order to when sense cycle arrives, obtains the temperature of the flow media flowing out described heat exchanger; According to the temperature of the flow media of the rate of load condensate of determined heat pump and the described heat exchanger of outflow of a upper sense cycle in the temperature of the flow media of the described heat exchanger of the outflow of this sense cycle and a upper sense cycle, determine the current loads rate of described heat pump, control the start and stop of the assisted heating device of described heat pump according to the current loads rate determined;
Described assisted heating device is in order to heat the flow media flowing through described outflow conduit upon actuation.
Preferably, described auxiliary heating control device determines that the current loads rate of described heat pump is specially:
Described auxiliary heating control device, when sense cycle arrives, obtains the temperature TwoHP (n) of the flow media of the described heat exchanger of described outflow;
Described auxiliary heating control device determines current loads rate RLF (n) of described heat pump according to following formula 1:
RLF (n)=RLF (n-1)+⊿ RLF (formula 1)
In formula 1, RLF (n-1) is the rate of load condensate of determined heat pump in a upper sense cycle; ⊿ RLF determines according to following formula 2:
⊿ RLF=Kp × (HTset-TwoHP (n))+Ki × (TwoHP (n-1)-TwoHP (n)) (formula 2)
In formula 2, the temperature of the flow media of the described heat exchanger of outflow that TwoHP (n-1) is a upper sense cycle; Kp is the proportional gain value preset; Ki is the tired calculation yield value preset; HTset is default target temperature value.
The start and stop that described auxiliary heating control device controls the assisted heating device of described heat pump according to the current loads rate determined are specially:
If described auxiliary heating control device determines that the current loads rate of described heat pump is greater than the higher limit of setting, then control assisted heating device and start; If determine, the current loads rate of described heat pump is less than the lower limit of setting, then control assisted heating device and stop.
According to another aspect of the present invention, provide a kind of control method of auxiliary heating, comprising:
When sense cycle arrives, obtain the temperature of the flow media of outflow heat exchanger; And
According to the temperature of the flow media of the rate of load condensate of determined described heat pump and the described heat exchanger of outflow of a upper sense cycle in the temperature of the flow media of the described heat exchanger of the outflow of this sense cycle and a upper sense cycle, determine the current loads rate of described heat pump; Wherein, the condenser of described heat pump is arranged in described heat exchanger;
The assisted heating device of described heat pump is controlled according to described current loads rate.
Wherein, the described current loads rate determining described heat pump, specifically comprises:
When sense cycle arrives, obtain the temperature TwoHP (n) of the flow media of described outflow heat exchanger;
Current loads rate RLF (n) of described heat pump is determined according to following formula 1:
RLF (n)=RLF (n-1)+⊿ RLF (formula 1)
In formula 1, RLF (n-1) is the rate of load condensate of determined heat pump in a upper sense cycle; ⊿ RLF determines according to following formula 2:
⊿ RLF=Kp × (HTset-TwoHP (n))+Ki × (TwoHP (n-1)-TwoHP (n)) (formula 2)
In formula 2, TwoHP (n-1) is the temperature of the flow media of the outflow heat exchanger of a upper sense cycle; Kp is the proportional gain value preset; Ki is the tired calculation yield value preset; HTset is default target temperature value.
The described assisted heating device controlling described heat pump according to described current loads rate specifically comprises:
If the current loads rate of described heat pump is greater than the higher limit of setting, then controls assisted heating device and start; If the current loads rate of described heat pump is less than the lower limit of setting, then controls assisted heating device and stop.
According to another aspect of the present invention, provide a kind of control device of auxiliary heating, comprising:
Rate of load condensate determining unit, for when sense cycle arrives, obtains the temperature of the flow media of outflow heat exchanger; And according to the temperature of the flow media of the rate of load condensate of determined described heat pump and the described heat exchanger of outflow of a upper sense cycle in the temperature of the flow media of the described heat exchanger of the outflow of this sense cycle and a upper sense cycle, determine the current loads rate of described heat pump; Wherein, the condenser of described heat pump is arranged in described heat exchanger;
Heat control unit, the current loads rate for determining according to described rate of load condensate determining unit controls the assisted heating device of described heat pump.
Wherein, the assisted heating device that described heat control unit controls described heat pump according to the current loads rate that described rate of load condensate determining unit is determined is specially:
Described heat control unit obtains the current loads rate that rate of load condensate determining unit is determined, if the current loads rate obtained is greater than the higher limit of setting, then controls assisted heating device and starts; If the current loads rate obtained is less than the lower limit of setting, then controls assisted heating device and stop.
The embodiment of the present invention is owing to controlling the assisted heating device of described heat pump according to the rate of load condensate of heat pump, thus can when rate of load condensate is larger, namely when the heating efficiency of heat pump is more weak, open assisted heating device and carry out auxiliary heating, and need not reach default target temperature value in the temperature of the flow media of outflow heat exchanger, open assisted heating device when simultaneously the rate of load condensate of heat pump is also little and carry out auxiliary heating; Thus heat pump energy can be made full use of heat, avoid in control procedure, open assisted heating device too frequently, that assisted heating device opens running time is longer, thus reach and save electric energy, energy-saving and cost-reducing object.
Accompanying drawing explanation
Fig. 1 is the heat pump schematics of prior art;
Fig. 2 is the schematic diagram of the heat pump heating of the embodiment of the present invention;
Fig. 3 is the control method flow chart carrying out auxiliary heating of the embodiment of the present invention;
Fig. 4 is the schematic diagram controlling assisted heating device start and stop according to rate of load condensate of the embodiment of the present invention;
Fig. 5 is the auxiliary heating control device internal structure block diagram of the embodiment of the present invention.
Detailed description of the invention
For making object of the present invention, technical scheme and advantage clearly understand, enumerate preferred embodiment referring to accompanying drawing, the present invention is described in more detail.But it should be noted that, the many details listed in description are only used to make reader to have a thorough understanding, even if do not have these specific details also can realize these aspects of the present invention to one or more aspect of the present invention.
The term such as " module " used in this application, " system " is intended to comprise the entity relevant to computer, such as but not limited to hardware, firmware, combination thereof, software or executory software.Such as, module can be, but be not limited in: the thread of the process that processor runs, processor, object, executable program, execution, program and/or computer.For example, application program computing equipment run and this computing equipment can be modules.One or more module can be positioned at an executory process and/or thread, and module also and/or can be distributed on a computer between two or more platform computers.
The present inventor analyzes prior art, find that the start and stop controlling assisted heating device according to the leaving water temperature of heat exchanger of prior art exist irrationality: in actual applications, heat pump also can carry out the adjustment of power output along with the leaving water temperature of heat exchanger; Therefore, when the leaving water temperature of heat exchanger is lower, if now the power output of heat pump does not reach the peak power output of heat pump, then there is no need to open assisted heating device, but improved the power output of heat pump by the control system of heat pump self, to improve the leaving water temperature of heat exchanger.Based on this analysis, the main thought of the present inventor is to utilize the rate of load condensate of heat pump to control the start and stop of assisted heating device.Like this, when determining that the rate of load condensate of heat pump reaches the higher limit of setting, illustrate that the power output of heat pump has reached high value and still can not meet load, now restart assisted heating device heat exchanger water outlet (or other from heat exchanger flow out flow media, as air) heat, thus take full advantage of the energy of heat pump, avoid and start assisted heating device too frequently, further saved electric energy.When determining that the rate of load condensate of heat pump reaches the lower limit of setting, close assisted heating device, assisted heating device stops the heating of the water outlet (or other flow media) of heat exchanger.
The technical scheme of the embodiment of the present invention is described in detail below in conjunction with accompanying drawing.The heat pump heating that the embodiment of the present invention provides as shown in Figure 2, comprising: the auxiliary heating system 204 of heat pump 201, heat exchanger 202, outflow conduit 203, heat pump, reflux line 205.Wherein, the auxiliary heating system 204 of heat pump comprises: assisted heating device 211, auxiliary heating control device 212.
Wherein, the condenser of heat pump 201 is arranged in heat exchanger 202, heats in order to the flow media in heat exchanger 202.
Outflow conduit 203 communicates with the outlet of heat exchanger 202, flow media in heat exchanger 202 flows out heat pump heating by outflow conduit 203, such as, in order to give the equipment heat supply outside heat pump heating, to the floor heating outside heat pump heating or heat formula air-conditioning or hot water heating.Particularly, in outflow conduit 203, be provided with water pump, make to be flowed out heat pump heating by the flow media heated by outflow conduit 203 in heat exchanger 202, to the equipment heat supply outside heat pump heating.
Reflux line 205 communicates with the entrance of heat exchanger 202, and the flow media of lower temperature is back in heat exchanger 202 by reflux line 205 and is again heated.Above-mentioned flow media can be specifically water or air or other liquid, as wet goods.That is, heat pump 201 can water in heat exchanger 202, or air, or other liquid heats.
Be water for flow media, or the situation of other liquid, flow out the flow media of the heat of heat pump heating from outflow conduit 203, after being layed in the circulating line 206 outside heat pump heating, be back to heat exchanger 202 from reflux line 205.Flow through in the process of circulating line 206 at flow media, flow media outwardly releases heat, reduces temperature.
Be the situation of air for flow media, the air flowing out the heat of heat pump heating from outflow conduit 203 can flow to by the pipeline be layed in heat pump heating the occasion needing hot-air, such as, needs the room of heat supply; And need the air of intensification, heating, then pumped to reflux line 205 by the pipeline be layed in outside heat pump heating by blower fan, be back in heat exchanger 202 through reflux line 205 and again heated.
Auxiliary heating control device 212, in order to determine the rate of load condensate of heat pump 201, controls the start and stop of assisted heating device 211 according to the rate of load condensate determined.
Assisted heating device 211 can be specifically electric heater unit; The mode of heating can be heat outside outflow conduit 203, by the heat transfer of the duct wall of outflow conduit 203, realize heating the flow media flowing through outflow conduit 203, thus make the temperature of the flow media of outflow heat pump heating, inflow circulating line 203 reach predetermined temperature value.In addition, the mode of heating also can be arranged in outflow conduit 203 by electric heater, directly heats the flow media flowing through outflow conduit 203.
After auxiliary heating control device 212 controls assisted heating device 211 startup, assisted heating device 211 heat exchanger 202 flow media outputted in reflux line 205 heats; After auxiliary heating control device 212 controls assisted heating device 211 stopping, the flow media that assisted heating device 211 stops heat exchanger 202 to output in reflux line 205 heats.
The auxiliary heating control device 212 of the embodiment of the present invention carries out the control method of auxiliary heating, and flow chart as shown in Figure 3, comprises the steps:
S301: the rate of load condensate determining heat pump.
Auxiliary heating control device 212 in real time according to the rate of load condensate of the temperature computation heat pump of monitoring, or when sense cycle arrives, can determine the rate of load condensate of heat pump.Sense cycle is what preset according to actual conditions, and such as can set sense cycle is 1 minute, or 10 minutes.
Auxiliary heating control device 212 determines that a kind of concrete grammar of heat pump rate of load condensate is as follows: auxiliary heating control device 212 comprises the temperature sensor arranging and be the exit of heat exchanger 202, and this temperature sensor is for detecting the temperature of the flow media of outflow heat exchanger 202.Auxiliary heating control device 212 obtains the temperature that this temperature sensor detects, after namely obtaining the temperature of the flow media of outflow heat exchanger 202, according to the rate of load condensate of the temperature determination heat pump that this temperature sensor detects.
Auxiliary heating control device 212 is obtaining the temperature of temperature sensor detection, after the temperature of the i.e. flow media of outflow heat exchanger 202, according to the current loads rate of the temperature computation heat pump of the flow media of outflow heat exchanger 202, the formula of the current loads rate of concrete calculating heat pump is as follows:
RLF (n)=RLF (n-1)+⊿ RLF (formula 1)
In formula 1, RLF (n) represents the current loads rate of heat pump, i.e. the rate of load condensate of determined heat pump in the current detection cycle; RLF (n-1) represent heat pump before rate of load condensate, namely go up the rate of load condensate of determined heat pump in a sense cycle.
Formula 1 Zhong ⊿ RLF determines according to following formula 2:
⊿ RLF=Kp × (HTset-TwoHP (n))+Ki × (TwoHP (n-1)-TwoHP (n)) (formula 2)
In formula 2, TwoHP (n) represents the temperature of the flow media of the outflow heat exchanger 202 detected in the current detection cycle, that is the temperature of the flow media of outflow heat exchanger 202 that TwoHP (n) obtains when the current detection cycle arrives for auxiliary heating control device 212; TwoHP (n-1) represents the temperature of the flow media of the outflow heat exchanger 202 of a sense cycle, i.e. the temperature of the flow media of outflow heat exchanger 202 that obtains when upper sense cycle arrives of auxiliary heating control device 212; Kp is the proportional gain value preset, and such as can set Kp is 6.0%; Ki is the tired calculation yield value preset, and such as can set Ki is 2.5%; HTset is default target temperature value, the temperature value of the flow media of the outflow heat exchanger 202 namely expected.
Certainly, those skilled in the art also according to the rate of load condensate of other method determination heat pump, and can be not limited only to above-mentioned method to determine the rate of load condensate of heat pump.Therefore, other determines that the method for heat pump rate of load condensate also should be considered as protection scope of the present invention.
In fact, rate of load condensate has considered the heating efficiency of heat pump, and rate of load condensate is less, and represent that the heating efficiency of heat pump is stronger, rate of load condensate is larger, represents that the heating efficiency of heat pump is weakening; Like this, can specify that assisted heating device 211 is opened when rate of load condensate is greater than certain value (as 50%), when rate of load condensate is less than certain value (as 0%), assisted heating device 211 stops (as shown in Figure 4).Like this, even if the temperature of the flow media of outflow heat exchanger 202 does not reach default target temperature value, when but the rate of load condensate of heat pump is also little, assisted heating device 211 can be opened, and by the adjustment self-con-tained unit of heat pump by self, temperature according to the flow media of outflow heat exchanger 202 strengthens power output, such as strengthens the operating frequency of compressor, thus the temperature of the flow media of outflow heat exchanger 202 is raised; Thus, make full use of the energy of heat pump, and avoid opening assisted heating device 211 as far as possible, reduce assisted heating device 211 and open running time, reach energy-saving and cost-reducing object.
S302: if the rate of load condensate determined is greater than the higher limit of setting, then perform step S303, controls assisted heating device 211 and start; If the rate of load condensate determined is less than the lower limit of setting, then perform step S304, control assisted heating device 211 and stop.
Those skilled in the art can according to actual conditions capping value and lower limit.Such as, can capping value be 55%, lower limit be 5%.
If the current loads rate of heat pump, namely current detection cycle determined rate of load condensate, is greater than the higher limit of setting, then perform step S303, controls assisted heating device 211 and starts;
If the current loads rate of heat pump, namely current detection cycle determined rate of load condensate, is less than the lower limit of setting, then perform step S304, controls assisted heating device 211 and stops.
S303: control assisted heating device 211 and start.
After assisted heating device 211 starts, the flow media that heat exchanger 202 outputs in reflux line 205 heats, thus the temperature making the temperature of the flow media flowed to outside heat pump heating through reflux line 205 reach predetermined, be enough to carry out heat supply to external world.
S304: control assisted heating device 211 and stop.
After assisted heating device 211 stops, assisted heating device 211 flow media that no longer heat exchanger 202 outputs in reflux line 205 heats.
The internal structure of above-mentioned auxiliary heating control device 212, as shown in Figure 5, comprising: rate of load condensate determining unit 501, heat control unit 502.
Rate of load condensate determining unit 501 is for determining the rate of load condensate of heat pump.Particularly, rate of load condensate determining unit 501 comprises the temperature sensor in the exit being arranged at described heat exchanger.Rate of load condensate determining unit 501 obtains the temperature of the flow media of the outflow heat exchanger 202 that the temperature sensor that is arranged at the exit of described heat exchanger detects; Rate of load condensate determining unit 501, according to the temperature of the flow media of the described outflow heat exchanger obtained, determines the current loads rate of described heat pump.Rate of load condensate determining unit 501 determines that the concrete grammar of the current loads rate of heat pump can method as described in above-mentioned steps S301, repeats no more herein.
Heat control unit 502 controls the assisted heating device of described heat pump for the rate of load condensate determined according to rate of load condensate determining unit 501.Particularly, heat control unit 502 obtains from rate of load condensate determining unit 501 rate of load condensate that rate of load condensate determining unit 501 determines, if the rate of load condensate obtained is greater than the higher limit of setting, then controls assisted heating device and starts; If the rate of load condensate obtained is less than the lower limit of setting, then controls assisted heating device and stop.
The embodiment of the present invention is owing to controlling the assisted heating device of described heat pump according to the rate of load condensate of heat pump, thus can when rate of load condensate is larger, namely when the heating efficiency of heat pump is more weak, open assisted heating device and carry out auxiliary heating, and need not reach default target temperature value in the temperature of the flow media of outflow heat exchanger, open assisted heating device when simultaneously the rate of load condensate of heat pump is also little and carry out auxiliary heating; Thus heat pump energy can be made full use of heat, avoid in control procedure, open assisted heating device too frequently, that assisted heating device opens running time is longer, thus reach and save electric energy, energy-saving and cost-reducing object.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. a heat pump heating, comprising: heat pump, heat exchanger, outflow conduit, assisted heating device and auxiliary heating control device;
Wherein, the condenser of described heat pump is arranged in described heat exchanger, in order to heat the flow media in described heat exchanger;
Described outflow conduit is connected with the outlet of described heat exchanger, and the flow media in described heat exchanger flows into described outflow conduit through the outlet of described heat exchanger;
Described auxiliary heating control device, in order to when sense cycle arrives, obtains the temperature of the flow media flowing out described heat exchanger; According to the temperature of the flow media of the rate of load condensate of determined heat pump and the described heat exchanger of outflow of a upper sense cycle in the temperature of the flow media of the described heat exchanger of the outflow of this sense cycle and a upper sense cycle, determine the current loads rate of described heat pump, and control the start and stop of the assisted heating device of described heat pump according to the current loads rate determined;
Described assisted heating device is in order to heat the flow media flowing through described outflow conduit upon actuation.
2. the system as claimed in claim 1, is characterized in that, described auxiliary heating control device determines that the current loads rate of described heat pump is specially:
Described auxiliary heating control device, when sense cycle arrives, obtains the temperature TwoHP (n) of the flow media of the described heat exchanger of described outflow;
Described auxiliary heating control device determines current loads rate RLF (n) of described heat pump according to following formula 1:
RLF (n)=RLF (n-1)+⊿ RLF (formula 1)
In formula 1, RLF (n-1) is the rate of load condensate of determined heat pump in a upper sense cycle; ⊿ RLF determines according to following formula 2:
⊿ RLF=Kp × (HTset-TwoHP (n))+Ki × (TwoHP (n-1)-TwoHP (n)) (formula 2)
In formula 2, the temperature of the flow media of the described heat exchanger of outflow that TwoHP (n-1) is a upper sense cycle; Kp is the proportional gain value preset; Ki is the tired calculation yield value preset; HTset is default target temperature value.
3. system as claimed in claim 2, it is characterized in that, the start and stop that described auxiliary heating control device controls the assisted heating device of described heat pump according to the current loads rate determined are specially:
If described auxiliary heating control device determines that the current loads rate of described heat pump is greater than the higher limit of setting, then control assisted heating device and start; If determine, the current loads rate of described heat pump is less than the lower limit of setting, then control assisted heating device and stop.
4. a control method for auxiliary heating, comprising:
When sense cycle arrives, obtain the temperature of the flow media of outflow heat exchanger; And
According to the temperature of the flow media of the rate of load condensate of determined described heat pump and the described heat exchanger of outflow of a upper sense cycle in the temperature of the flow media of the described heat exchanger of the outflow of this sense cycle and a upper sense cycle, determine the current loads rate of described heat pump; Wherein, the condenser of described heat pump is arranged in described heat exchanger;
The assisted heating device of described heat pump is controlled according to described current loads rate.
5. method as claimed in claim 4, it is characterized in that, the described current loads rate determining described heat pump, specifically comprises:
When sense cycle arrives, obtain the temperature TwoHP (n) of the flow media of described outflow heat exchanger;
Current loads rate RLF (n) of described heat pump is determined according to following formula 1:
RLF (n)=RLF (n-1)+⊿ RLF (formula 1)
In formula 1, RLF (n-1) is the rate of load condensate of determined heat pump in a upper sense cycle; ⊿ RLF determines according to following formula 2:
⊿ RLF=Kp × (HTset-TwoHP (n))+Ki × (TwoHP (n-1)-TwoHP (n)) (formula 2)
In formula 2, TwoHP (n-1) is the temperature of the flow media of the outflow heat exchanger of a upper sense cycle; Kp is the proportional gain value preset; Ki is the tired calculation yield value preset; HTset is default target temperature value.
6. method as claimed in claim 5, it is characterized in that, the described assisted heating device controlling described heat pump according to described current loads rate specifically comprises:
If the current loads rate of described heat pump is greater than the higher limit of setting, then controls assisted heating device and start; If the current loads rate of described heat pump is less than the lower limit of setting, then controls assisted heating device and stop.
7. a control device for auxiliary heating, comprising:
Rate of load condensate determining unit, for when sense cycle arrives, obtains the temperature of the flow media of outflow heat exchanger; And according to the temperature of the flow media of the rate of load condensate of determined described heat pump and the described heat exchanger of outflow of a upper sense cycle in the temperature of the flow media of the described heat exchanger of the outflow of this sense cycle and a upper sense cycle, determine the current loads rate of described heat pump; Wherein, the condenser of described heat pump is arranged in described heat exchanger;
Heat control unit, the current loads rate for determining according to described rate of load condensate determining unit controls the assisted heating device of described heat pump.
8. device as claimed in claim 7, is characterized in that,
The assisted heating device that described heat control unit controls described heat pump according to the current loads rate that described rate of load condensate determining unit is determined is specially:
Described heat control unit obtains the current loads rate that rate of load condensate determining unit is determined, if the current loads rate obtained is greater than the higher limit of setting, then controls assisted heating device and starts; If the current loads rate obtained is less than the lower limit of setting, then controls assisted heating device and stop.
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| CN108317588A (en) * | 2018-01-02 | 2018-07-24 | 特灵空调系统(中国)有限公司 | Compound heating device, supply control method for heat and its device |
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| CN102759192A (en) | 2012-10-31 |
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